Time-sharing rotary ash silo gasification air system

Abstract

The present invention relates to a time-sharing rotary ash silo gasification air system, which belongs to the technical field of fly ash processing. A time-sharing rotary ash silo gasification air system comprises: a gasification air input structure, which is used to connect to the outside and input gasification air; a drying storage structure, which is connected to the gasification air input structure, and the drying storage structure is used to input dry clean gas; a heating structure, which is connected to the drying storage structure, and the heating structure is used to heat gas; a time-sharing soot blowing structure, which is connected to the heating structure, and the time-sharing soot blowing structure is provided with an ash discharge port, which is used to connect to the outside; a total control structure, which is used to control the control valve body of the gasification air input structure, the drying storage structure, the heating structure and the time-sharing soot blowing structure. Compared with the traditional fly ash silo gasification air system, the time-sharing rotary ash silo gasification air system disclosed by the present invention not only greatly reduces energy consumption, but also eliminates the hidden danger of fly ash compaction.

Description

Technical Field

[0001] The invention relates to the technical field of fly ash processing, and in particular to a time-sharing rotary ash silo gasification air system. Background Art

[0002] Coal-fired power plants generally have a certain number of fly ash silos to store fly ash captured by electrostatic precipitators. In order to prevent the fly ash from being compacted and hindering the unloading after being piled up and compressed in the ash silo, a gasification tank is installed at the bottom of the ash silo, and a gasification air system is designed to supply air to each ash silo. The gasification air is blown out from the gasification tank at the bottom of the ash silo to keep the stored fly ash fluffy. The traditional fly ash silo gasification air system is usually equipped with a Roots blower and an electric heater for air supply, plus a spare Roots blower. The spare Roots blower can be connected to each ash silo through pipelines and valve switching to ensure that each ash silo has one Roots blower in use and one in reserve. For example, a coal-fired power plant has three fly ash silos, and its gasification air system is equipped with three electric heaters and four Roots blowers. One ash silo corresponds to one Roots blower, plus a spare Roots blower that can supply air to all ash silos. Although the traditional fly ash silo gasification air system has a simple and reliable structure, it is difficult to remove water vapor from the gasification air due to the low air supply pressure of the Roots blower, with a rated pressure of 0.08MPa. An electric heater must be used to heat the gasification air to ensure that the air in the silo does not condense and precipitate water droplets. However, in cold and humid weather, the gasification air contains more water. Although the electric heater is used to heat the gasification air, it is still difficult to ensure that all the fly ash in the ash silo has a high enough temperature, resulting in condensation in the air in the silo, which makes the fly ash damp and brings the hidden danger of fly ash compaction. At the same time, due to the low pressure of the gasification air delivered by the Roots blower, when the ash level in the ash silo is high, it is difficult to loosen the accumulated fly ash, which will reduce the fluidity of the fly ash and affect the unloading of ash, and will also increase the hidden danger of fly ash compaction. In this case, the gasification air system needs to continuously supply heated air to the ash silo, which consumes a lot of energy. Summary of the invention

[0003] Based on this, it is necessary to provide a time-sharing rotary ash silo gasification air system to address the problems of high moisture content, low wind pressure and high energy consumption in the traditional fly ash silo gasification air.

[0004] A time-sharing rotary ash silo gasification air system, the time-sharing rotary ash silo gasification air system comprises: a gasification air input structure, the gasification air input structure is used to communicate with the outside and input gasification air; a dry storage structure, the dry storage structure is connected to the gasification air input structure, the dry storage structure is used to input dry clean gas; a heating structure, the heating structure is connected to the dry storage structure, the heating structure is used to heat gas; a time-sharing soot blowing structure, the time-sharing soot blowing structure is connected to the heating structure, the time-sharing soot blowing structure is provided with an ash discharge port, the ash discharge port is used to communicate with the outside; a total control structure, the total control structure is used to control the control valve body of the gasification air input structure, the dry storage structure, the heating structure and the time-sharing soot blowing structure.

[0005] The above discloses a time-sharing rotary ash bin gasification air system. First, the gasification air input structure is connected to the outside to introduce gasification air, which provides a basic gas source for the operation of the entire system and ensures that there is sufficient gas to fluidize the fly ash. The dry storage structure connected to it plays a key role. It can dry and purify the input gasification air to remove pollutants such as moisture, impurity particles and oil. In this way, after the dry and clean gasification air enters the system, it effectively avoids the fly ash from getting damp and agglomerating, so that it always maintains good physical and chemical properties, greatly improves the fluidization effect of the fly ash in the bin, and lays a solid foundation for the subsequent smooth unloading. The purification function of the dry storage structure also reduces the wear and blockage of impurities on the internal pipes, valves, and ventilation devices of the system, prolongs the service life of the equipment, and effectively ensures that the gasification air system can operate stably for a long time. At the same time, the dry gas source makes it easier to fluidize the fly ash under the same gasification air pressure and flow rate, which means that the system can reduce the gasification air energy consumed to achieve the ideal fluidization effect, thereby achieving the goal of reducing energy consumption. The heating structure is connected to the drying storage structure and is located behind the filter drying device to ensure that the temperature of the gasification air entering the ash bin is higher than the dew point and no water is precipitated. This plays a vital role in preventing the fly ash from getting damp and agglomerated and maintaining its good fluidity in the bin, which improves the quality of the fly ash as a whole and makes it more in line with the requirements of subsequent use or treatment. The time-sharing soot blowing structure is connected to the heating structure, and under the precise control of the overall control structure, it can achieve precise control of the rhythm of the gasification air output from the fly ash bin. By reasonably setting the interval time of soot blowing, not only the stable fluidization state of the fly ash in the bin is maintained, and the re-aggregation of particles leading to poor fluidity and blockage and accumulation of the ash outlet are avoided, but also only one control valve needs to be opened each time to blow air to different positions, so that the fly ash can obtain sufficient gas power in each area, ensuring that the fly ash in all places can maintain good fluidity. In addition, this precise time-sharing control also helps to avoid unnecessary energy waste, reduces the power consumption of the heating structure while reducing the gas consumption, achieves energy saving and consumption reduction in many aspects, and further improves the economy of the system. The general control structure uniformly controls the control valve bodies of the gasification air input structure, drying storage structure, heating structure and time-sharing soot blowing structure, making the coordination between the various parts of the entire system closer and more orderly. Each structure can make corresponding adjustments in time according to the actual working conditions, give full play to its own advantages, and jointly ensure the efficient, stable and energy-saving operation of the time-sharing rotary ash silo gasification air system, which fully meets the diverse needs of the fly ash silo for the gasification air system. Compared with the traditional fly ash silo gasification air system, one ash silo corresponds to one Roots blower, plus a spare Roots blower that can supply air to all ash silos. Not only does it consume a lot of energy, but in cold and humid weather, the gasification air contains more water, making it difficult to ensure that all the fly ash in the ash silo has a high enough temperature, resulting in condensation in the air in the silo, causing the fly ash to become damp, bringing the hidden danger of fly ash compaction.The present invention can not only reduce gas consumption but also reduce electricity consumption for heating, thus greatly reducing energy consumption, and eliminates the hidden danger of fly ash compaction, thereby ensuring that during a 4-5 year storage clearing cycle, there will be no failure of fly ash compaction or ash discharge blockage.

[0006] In one embodiment, the gasification wind input structure includes an air compressor assembly, an input channel assembly and an input storage tank assembly. The air compressor assembly is used to connect to the outside and input gas. The input channel assembly is arranged on the air compressor assembly, and the input storage tank assembly is arranged on the input channel assembly. The input channel assembly is connected to the dry storage structure. By arranging the input channel assembly on the air compressor assembly, arranging the input storage tank assembly on the input channel assembly, and then using the air compressor assembly to inhale the outside air, firstly, the air compressor assembly will compress the air while inhaling the air, increase its pressure, ensure that the air can flow along a predetermined path, and provide sufficient power for operations such as fluidization of fly ash. Secondly, the input channel assembly is arranged on the air compressor assembly, which provides a clear transmission path for the compressed air. Finally, the input storage tank assembly is arranged on the input channel assembly, which can concentrate the gas in one place, and can accurately control the gas pressure when releasing the gas pressure. Appropriate gas pressure is one of the key factors to ensure good fluidization of fly ash. Too high air pressure may cause excessive fluidization of fly ash, resulting in dust and other problems; too low air pressure will not allow fly ash to be fully fluidized, affecting its fluidity and operations such as unloading and transportation. By accurately controlling the gas pressure released by the input storage tank assembly, the fly ash can be provided with just the right fluidization power, so that the fly ash can maintain a good fluidization state in the warehouse and improve the working efficiency of the system. At the same time, the input storage tank assembly can also be used as an emergency gas source. When the air compressor assembly fails, the gas source stored in the input storage tank assembly can continue to provide gasification wind support for the system, avoiding poor fluidization of fly ash in the warehouse due to sudden interruption of the gas source.

[0007] In one embodiment, the number of the air compressor assemblies is multiple. By setting the number of air compressor assemblies to multiple, and multiple air compressors can be used as backup for each other, compared with the traditional fly ash silo gasification air system, a fly ash silo is usually equipped with a Roots blower and an electric heater for air supply, plus a backup Roots blower. Although the structure is simple and reliable, due to the low air supply pressure of the Roots blower, the rated pressure is 0.08MPa, and it is difficult for the system to remove the water vapor in the gasification air. The electric heater must be used to heat the gasification air to ensure that the air in the silo does not condense and precipitate water droplets. However, in cold and humid weather, the gasification air contains more water. Although there is an electric heater to heat the gasification air, it is still difficult to ensure that all the fly ash in the ash silo has a high enough temperature, resulting in condensation in the air in the silo, causing the fly ash to become damp, bringing the hidden danger of fly ash compaction. At the same time, due to the low pressure of the gasification air delivered by the Roots blower, when the ash level in the ash silo is high, it is difficult to loosen the accumulated fly ash, which will reduce the fluidity of the fly ash and affect the ash unloading, and will also increase the hidden danger of fly ash compaction. In this case, the gasification air system needs to continuously supply heated air to the ash bin, which consumes a lot of energy. However, the present invention uses multiple air compressor assemblies with the same power as the original Roots blower to achieve the effect of mutual backup. At the same time, a storage tank for input gas is provided to control the output pressure of the gasification air and ensure the fluidity of the fly ash; at the same time, the present invention is equipped with 2 gas storage tanks and multiple groups of air filtering and drying devices to remove most of the moisture in the compressed air, so that even when the subsequent electric heater fails and stops working, it can basically ensure that the gasification air entering the ash bin does not precipitate moisture during the heater shutdown and maintenance time. Therefore, the reliability of the present invention is greatly improved compared to the original one-for-one backup system without a gas drying device. Of course, the user can adjust the number of air compressor assemblies and the number of drying assemblies according to actual conditions.

[0008] In one embodiment, the number of the heating structures is multiple, and the multiple heating structures are respectively connected to the dry storage structure. By setting the number of the heating structures to multiple, and the multiple heating structures are respectively connected to the dry storage structure, when the ash silo gasification air storage tank in the dry storage structure fails or needs to be repaired, the dry airflow can bypass the gasification air storage tank through the dry air auxiliary channel, and then be heated by the heating structure, and then enter the ash silo, so as to ensure that the fly ash silo gasification air system can operate continuously and stably, and improve the reliability of system operation.

[0009] In one embodiment, there are multiple time-sharing soot blowing structures, and the multiple time-sharing soot blowing structures are connected to the heating assembly, and the heating assembly includes multiple heating structures. By setting the number of heating structures to multiple, the multiple heating structures are respectively connected to the drying storage structure, and the multiple time-sharing soot blowing structures are connected to the multiple heating structures together, when a heating structure needs to be repaired, the airflow after drying can be heated by another heating structure, reducing the risk of the entire system shutting down due to heating equipment failure, improving the reliability of system operation, and ensuring that the fly ash storage gasification air system can operate continuously and stably.

[0010] In one embodiment, there are multiple time-sharing soot blowing structures and multiple heating structures, and the multiple time-sharing soot blowing structures are connected to the multiple heating structures one-to-one. By setting the number of time-sharing soot blowing structures to multiple, and the multiple time-sharing soot blowing structures are connected to the multiple heating structures one-to-one, the dried gasification air can be heated specifically and all the gasification air can be transported to each fly ash bin, so that multiple fly ash bins can be efficiently fluidized at the same time, thereby improving the overall fluidization efficiency of the fly ash. At the same time, when rapid unloading is required, opening multiple soot blowing structures at the same time can quickly make the fly ash reach an ideal fluidized state, speed up the unloading process, and improve the turnover efficiency of the fly ash bin.

[0011] In one embodiment, the air compressor assembly includes an air compressor and an air compressor control assembly, the air compressor is used to connect to the outside world and input gas, the air compressor is connected to the input channel assembly, the air compressor control assembly is arranged on the air compressor, and the air compressor control assembly is used to detect the pressure of the air in the compressed air storage tank and transmit it to the PLC controller to control the on and off of the air compressor input gas or the air compressor speed. The air compressor of the air compressor assembly is a low-pressure screw air compressor, and the air pressure provided by the air compressor is 0.3~0.5MPa. By using the air compressor control assembly and the PLC controller arranged on the air compressor to control the on and off of the air compressor input gas sent to the input channel assembly, when the air compressors are mutually standby, the actual demand of the system for the gas source can be accurately matched, thereby achieving the purpose of energy saving. In the time-sharing rotary fly ash silo gasification air system, the demand for gasification air in different time periods is different. By controlling the air compressor control assembly, only the air compressor that meets the current demand can be turned on according to the actual working conditions. For example, during the daily maintenance phase of the fly ash silo, the required gasification air volume is relatively small, and only one air compressor needs to be started to maintain basic fluidization conditions, without having to run all air compressors. This avoids energy waste caused by inefficient operation of air compressors and closely matches energy input with actual demand. Moreover, since the air compressors are backup for each other, there is a certain redundancy design. If there is no variable frequency control of the air compressor, the air compressor may start and stop frequently, resulting in excessive energy consumption. The air compressor control component can reasonably utilize this redundancy. When the system is operating normally and the demand for gasification air is relatively stable, only an appropriate amount of air compressors are turned on, and the remaining standby air compressors are in a closed state and do not consume energy. By setting the air compressor to a low-pressure screw air compressor, the air pressure that the air compressor can provide is 0.3~0.5MPa. The air compressor under the same power can reach 80% of the 0.08MPa air volume of the Roots blower of the traditional fly ash silo gasification air system, achieving the goal of increasing the air pressure while the air volume remains basically unchanged, so that the gasification air can diffuse more fully between the fly ash particles. When air enters the fly ash layer at a higher pressure, it can more effectively break up the agglomeration between particles and make the fly ash particles dispersed more evenly, which helps to improve the fluidity of the fly ash.

[0012] In one of the embodiments, the input channel assembly includes a main gasification wind channel, an auxiliary gasification wind channel and an input stop valve, the main gasification wind channel and the auxiliary gasification wind channel are both arranged on the air compressor assembly, the main gasification wind channel and the auxiliary gasification wind channel are arranged relatively, the input storage tank assembly is arranged on the main gasification wind channel, the number of the input stop valves is multiple, and the multiple input stop valves are respectively arranged on the main gasification wind channel and the auxiliary gasification wind channel, and the main gasification wind channel and the auxiliary gasification wind channel are both connected to the dry storage structure. By arranging both the main gasification wind channel and the auxiliary gasification wind channel on the air compressor assembly and arranging the input storage tank assembly on the main gasification wind channel, under normal circumstances, the main gasification wind channel undertakes the main gas transportation task and transports the gas to the input storage tank assembly for buffering and voltage stabilization and other processing. The auxiliary channel for gasification air serves as a backup channel or is used in some special situations. For example, when the input storage tank component needs to be overhauled, the main channel needs maintenance, or a failure occurs, or the system has special gas diversion requirements, the input shut-off valve is controlled to open the auxiliary channel and close the main channel, allowing the gasification air to bypass the input storage tank component and enter the auxiliary channel, thereby allowing the auxiliary channel to play a role and increasing the flexibility and reliability of the system.

[0013] In one embodiment, the input storage tank assembly includes a compressed air storage tank, a first pressure sensor and a first drainage controller, the compressed air storage tank is connected to the input channel assembly, and the first pressure sensor and the first drainage controller are both arranged on the compressed air storage tank. By connecting the compressed air storage tank to the input channel assembly, the first pressure sensor and the first drainage controller are both arranged on the compressed air storage tank, and after the compressed air storage tank is connected to the input channel assembly, it can play the role of buffering, storage and pressure control. The compressed air pressure and flow rate output by the air compressor may fluctuate, and these fluctuations will be buffered when the air enters the storage tank. The first pressure sensor can sense the air pressure in the tank in real time, which is very critical for the precise control of the system. The first pressure sensor can accurately understand the pressure changes in the storage tank, and provide support for the subsequent ideal gasification wind pressure. The first drainage controller can remove moisture from the compressed air. In the process of compressing the air, the water vapor in the air will partially condense into liquid water due to the increase in pressure, which to a certain extent ensures the dryness of the gasification air used for fly ash fluidization and helps to maintain the good physical properties of the fly ash.

[0014] In one embodiment, the drying storage structure includes a drying component, a drying wind output channel and a gasification wind storage component. The number of the drying components is multiple, and the multiple drying components are connected to the gasification wind input structure one by one, the drying wind output channel is connected to the multiple drying components and the heating structure, and the gasification wind storage component is arranged on the drying wind output channel. By connecting the multiple drying components to the gasification wind input structure one by one, the system can flexibly adjust the drying strategy according to actual needs. Under different working conditions, such as different seasons, different fly ash humidity requirements, etc., these changes can be adapted by controlling the working state of different drying components. For example, in humid seasons, more drying components can be opened or their drying intensity can be increased to cope with the increase in humidity in the air; while in dry seasons, the number of drying components used can be appropriately reduced or their working intensity can be reduced, so as to achieve energy saving and optimize system operation. This flexibility can better meet the various requirements of the system for gasification wind drying and improve the adaptability of the system. At the same time, multiple drying components are equivalent to a redundant design. When one of the drying components fails, the other drying components can still work normally and continue to dry the gasification wind to maintain the basic drying function of the system. This can reduce the risk of the entire system shutting down due to drying equipment failure, improve the reliability of system operation, and ensure that the fly ash silo gasification air system can operate continuously and stably. The dry air output channel is connected to multiple drying components and heating structures, and the gasification air storage component is set on the dry air output channel, which can buffer, stabilize and store the dry air, so that the pressure and flow of the dry air entering the subsequent part of the system are more stable, ensuring that the gasification air can provide sufficient air volume and air pressure to the ash silo. At the same time, the gasification air storage component can also be used as an emergency air source. When the dry air output channel is partially blocked, the dry air stored in the gasification air storage component can continue to provide air source support for the system, avoiding poor fluidization of fly ash in the silo due to sudden interruption of the air source.

[0015] In one embodiment, the drying assembly includes a drying stop valve, an air filter, a refrigerated dryer and a drying pipeline. The number of the drying stop valves is two, and the two drying stop valves are respectively arranged at the two ends of the drying pipeline. The air filter and the refrigerated dryer are arranged in sequence on the drying pipeline, and the drying pipeline is connected with the gasification wind input structure and the drying wind output channel. By arranging the two drying stop valves at the two ends of the drying pipeline, and then arranging the air filter and the refrigerated dryer in sequence on the drying pipeline, and the drying pipeline is connected with the gasification wind input structure and the drying wind output channel, and arranging the drying stop valves at both ends of the drying pipeline, the opening and closing of the drying process can be accurately controlled. When the system needs to dry the gasification wind, the two valves can be opened to allow the gasification wind to enter the drying pipeline for drying; and when the system does not need to dry or needs to maintain and overhaul the drying equipment, the two valves can be closed, so that the drying pipeline and the equipment inside it can be effectively isolated to avoid unnecessary gas flow and equipment operation. The air filter and the refrigerated dryer are arranged in the drying pipeline in sequence to preliminarily purify the gasification air entering the drying pipeline. The gasification air may contain various impurities, such as dust and particulate matter. If these impurities enter the refrigerated dryer, they may affect its working efficiency and service life. The refrigerated dryer can effectively remove moisture from the gasification air and provide dry gasification air for the fly ash warehouse. The dried gasification air can better prevent the fly ash from getting damp and agglomerating, which is conducive to the fluidization and transportation of the fly ash.

[0016] In one of the embodiments, the dry air output channel includes a dry air main channel, a dry air auxiliary channel and an output stop valve, the dry air main channel and the dry air auxiliary channel are both connected to the drying component and the heating structure, the dry air main channel and the dry air auxiliary channel are arranged relatively, the gasification wind storage component is arranged on the dry air main channel, the number of the output stop valves is multiple, and the multiple output stop valves are respectively arranged on the dry air main channel and the dry air auxiliary channel. By connecting the dry air main channel and the dry air auxiliary channel with the drying component and the heating structure, and setting the gasification wind storage component on the dry air main channel, gas distribution can be performed according to different system requirements. Under normal circumstances, the dry air main channel undertakes the main gas transportation task, and transports the dry air to the gasification wind storage component for buffering and voltage stabilization, etc., to provide stable wind pressure for subsequent fly ash storage soot blowing. The auxiliary dry air channel can be used as a backup channel or in some special situations. For example, when the main channel needs maintenance or fails, or the system has special gas diversion requirements, the output stop valves set in the main dry air channel and the auxiliary dry air channel can be used to close the main channel, open the auxiliary channel, and guide the gas to the auxiliary dry air channel to maintain the continuous operation of the time-sharing rotary ash silo gasification air system, increase the flexibility and reliability of the system, and avoid poor fluidization of fly ash in the silo due to sudden interruption of the gas source.

[0017] In one embodiment, the gasification wind storage assembly includes a gasification wind storage tank and a second drainage controller, the gasification wind storage tank is connected to the dry wind output channel, and the second drainage controller is arranged on the gasification wind storage tank. By connecting the gasification wind storage tank with the dry wind output channel and arranging the second drainage controller on the gasification wind storage tank, the gasification wind storage tank can play a buffering role after being connected to the dry wind output channel. The dry wind pressure and flow rate output by the dry wind output channel may fluctuate, and these fluctuations will be buffered when the air enters the storage tank. At the same time, the gasification wind storage tank can also be used as an emergency air source. If there is an emergency problem in the dry wind output channel or upstream equipment, the compressed air in the gasification wind storage tank can temporarily maintain the basic operation of the system, buy time for the system to repair or restore normal air supply, and prevent fluidization failures in the fly ash warehouse caused by air source interruption, such as fly ash agglomeration or clogging of the ash discharge port.

[0018] In one embodiment, the heating structure includes a heating control valve body, an electric heater and a heating pipeline, wherein the heating control valve body and the electric heater are sequentially arranged on the heating pipeline, and the heating pipeline is connected with the drying storage structure and the time-sharing soot blowing structure. By sequentially arranging the heating control valve body and the electric heater on the heating pipeline, and connecting the heating pipeline with the drying storage structure and the time-sharing soot blowing structure, the gasification air for drying is heated to a temperature sufficient to make the fly ash well fluidized and transported to the time-sharing soot blowing structure, and the gasification air with a higher temperature can better penetrate the gaps between the fly ash particles, making the fly ash easier to fluidize, thereby improving the efficiency of unloading and transportation. At the same time, after being heated by the electric heater, dry and high-temperature gasification air can be better provided for the fly ash depot. This connection mode ensures that the entire system is coherent from the drying of the air source to the heating process, which is conducive to improving the overall efficiency of the system, and can provide the fly ash depot with stable quality gasification air, prevent the fly ash from getting damp and agglomerating, and maintain a good fluidization state of the fly ash.

[0019] In one embodiment, the time-sharing soot blowing structure includes a steam cylinder assembly, a blowing pipeline, a pneumatic control valve and an ash bin assembly. The steam cylinder assembly is connected to the heating structure. There are multiple blowing pipelines, which are arranged on the steam cylinder assembly. There are multiple pneumatic control valves, which are arranged one-to-one on the multiple blowing pipelines. The ash bin assembly is arranged on the multiple blowing pipelines, and the ash bin assembly is provided with the ash discharge port. By connecting the steam cylinder assembly to the heating structure, arranging multiple blowing pipelines on the steam cylinder assembly, and arranging multiple pneumatic control valves one-to-one on the multiple blowing pipelines, and then arranging the ash bin assembly on the multiple blowing pipelines, the steam cylinder assembly is connected to the heating structure, and 0.15~0.2MPa of gasification air is provided to the ash bin assembly. At the same time, it also plays a key role in distributing gas, distributing the concentrated high-temperature gasification air to multiple blowing pipelines in a certain proportion and direction, ensuring that each blowing pipeline can obtain sufficient air source, so that the fly ash in the ash storage component can be fully and evenly fluidized. Multiple pneumatic control valves are set one by one on multiple blowing pipelines, which can accurately control the gas flow in each blowing pipeline, and use the overall control structure to blow the fly ash in the ash storage component in time and rounds, ensuring the smooth flow of fly ash in various places in the fly ash storage. At the same time, multiple pneumatic control valves can also realize flexible operation modes. According to different working stages and needs, the working state of the blowing pipeline can be adjusted by controlling the pneumatic control valve. When the fly ash silo is not discharged, each pneumatic valve opens for 1 minute to supply air, and then closes. 5 seconds before the previous pneumatic valve closes, the next pneumatic valve opens, and so on. A cycle is completed in about 8 minutes to maintain the fluidized state of fly ash to prevent agglomeration. When the fly ash silo is discharged, all pneumatic valves are opened to supply air to ensure smooth flow of fly ash in various parts of the fly ash silo and provide sufficient gasification air to enable smooth discharge of fly ash. After the discharge is completed, the pneumatic valves are controlled to switch to the non-discharging mode, and one is opened each time to save gas consumption and achieve the purpose of energy saving. One of the pneumatic control valves corresponds to the central gasification slot at the discharge port. When there is fly ash in the ash silo component, the pneumatic valve is often opened to blow air to ensure that the fly ash at the discharge port is in a fluffy state. This flexible control method can better adapt to various working conditions of the ash silo component.

[0020] In one embodiment, the sub-cylinder assembly includes a sub-cylinder and a second pressure sensor, the sub-cylinder is connected to the heating structure, the second pressure sensor is arranged on the sub-cylinder, and the blowing pipeline is arranged on the sub-cylinder. By connecting the sub-cylinder with the heating structure, and arranging the second pressure sensor on the sub-cylinder, the sub-cylinder is connected to the heating structure, making it a key hub for gas distribution in the entire system. After the high-temperature gasification wind output from the heating structure enters the sub-cylinder, it will be redistributed here, and the gas with a pressure of 0.15~0.2MPa will be actually transported to each branch pipeline of the blowing pipeline, thereby providing gasification wind for different areas of the ash bin, ensuring that each part of the ash bin can obtain a stable gas source supply, thereby achieving comprehensive and uniform fly ash fluidization. The second pressure sensor can monitor the current gasification wind pressure of the sub-cylinder in real time, and this pressure range can provide sufficient power for subsequent gas transportation. If the pressure is too low, the gasification wind may not be able to effectively fluidize the fly ash due to insufficient power during the process of being transported to various areas of the ash bin, resulting in problems such as accumulation and agglomeration of the fly ash. If the pressure is too high, on the one hand, it will cause greater pressure on the system's pipes and equipment, increasing the risk of equipment damage; on the other hand, it may cause the gasification air to flow too fast in the ash bin, resulting in excessive fluidization of the fly ash and the generation of dust and other adverse phenomena.

[0021] In one embodiment, the ash bin assembly includes a fly ash bin, a branch gasification tank body and a central gasification tank body, the fly ash bin is arranged on a plurality of the blowing pipelines, the number of the branch gasification tank bodies is multiple, the plurality of the branch gasification tank bodies and the central gasification tank body are arranged on the fly ash bin, the plurality of the branch gasification tank bodies are connected to the plurality of the blowing pipelines one-to-one, the central gasification tank body is connected to one of the blowing pipelines, the fly ash bin is provided with the ash discharge port, the number of the ash discharge port is multiple, and the plurality of the ash discharge ports are arranged relative to the air outlet of the central gasification tank body. By arranging the fly ash bin on a plurality of blowing pipelines, and connecting eight branch gasification tank bodies to eight blowing pipelines one-to-one, connecting the central gasification tank body to the ninth blowing pipeline, and the normally open air outlet of the central gasification tank body is arranged near the plurality of ash discharge ports, the fly ash at the ash discharge port position is ensured to be in a fluffy state, and the problem of poor unloading caused by compaction of the fly ash is avoided. The connection of multiple blowing pipelines to the fly ash silo, and the branch gasification tank body and the central gasification tank body are connected to the corresponding blowing pipelines respectively, so as to realize the comprehensive fluidization of the fly ash in the fly ash silo. The gasification air transported from the blowing pipeline is evenly distributed in the fly ash silo through the branch gasification tank body and the central gasification tank body, so that the fly ash can be affected by the gasification air in all areas. This comprehensive coverage method can effectively avoid the fluidization dead corners of fly ash in the silo, ensure that the entire fly ash pile can be in a good fluidization state, and provide a basis for efficient unloading. When there is no ash discharge in the fly ash silo, each branch gasification tank body is opened in sequence for 1 minute to supply air, and then closed. 5 seconds before the branch gasification tank body is closed, the next branch gasification tank body is opened, and so on. A cycle is completed in about 8 minutes. When the fly ash depot is discharged, the branch gasification tanks are all opened to supply air under the command of the general control structure to ensure the smooth flow of fly ash in various places in the fly ash depot, so that the fly ash can be discharged efficiently at multiple discharge ports. The coordinated work between them further ensures the unloading efficiency. After the discharge is completed, the general control structure controls all gasification tanks to operate in the non-discharge mode. Each time one is opened, the gas consumption is saved, achieving the purpose of energy saving. The time-sharing and zoned rotation gas supply mode, compared with the original system where a single Roots blower is fully loaded to supply gas to a fly ash depot for a long time, reduces the gas consumption while ensuring the fluffy fly ash, and also reduces the electricity consumption of the electric heater, reducing the overall energy consumption.

[0022] In one embodiment, the general control structure includes a PLC controller and a frequency converter, the PLC controller and the frequency converter are integrated, and the general control structure is electrically connected to the control valve body of the gasification air input structure, the drying storage structure, the heating structure and the time-sharing soot blowing structure. By integrating the PLC controller and the frequency converter to form a general control structure, it is possible to achieve centralized and precise control of the control valve body of the entire time-sharing rotary ash silo gasification air system. The PLC controller can monitor and logically judge the operating status of each device in the system according to the preset program and algorithm. The frequency converter can accurately adjust the speed of the motor and other equipment according to the instructions of the PLC controller, thereby controlling the flow rate, pressure and other parameters of the gasification air. This integrated control method avoids the signal delay or mismatch problem that may occur between multiple independent control units, ensures that each part of the system can work together according to the precise time sequence and parameter requirements, and ensures that the time-sharing rotary ash silo gasification air system can operate efficiently under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the first system diagram of the time-sharing rotary ash silo gasification air system;

[0024] Figure 2 A system diagram of the gasification wind input structure;

[0025] Figure 3 It is a system diagram of the dry storage structure;

[0026] Figure 4 It is the system diagram of the heating structure and the time-sharing soot blowing structure;

[0027] Figure 5 It is a system diagram of the time-sharing soot blowing structure;

[0028] Figure 6 It is the system diagram of the ash storage components;

[0029] Figure 7 This is the second system diagram of the time-sharing rotary ash silo gasification air system.

[0030] The corresponding relationship between the reference numerals and the component names is as follows:

[0031] 1 gasification air input structure, 11 air compressor assembly, 111 air compressor, 112 air compressor control assembly, 12 input channel assembly, 121 gasification air main channel, 122 gasification air auxiliary channel, 123 input stop valve, 13 input storage tank assembly, 131 compressed air storage tank, 132 first pressure sensor, 133 first drainage controller;

[0032] 2 dry storage structure, 21 dry component, 211 dry stop valve, 212 air filter, 213 refrigerated dryer, 214 dry pipeline, 22 dry air output channel, 221 dry air main channel, 222 dry air auxiliary channel, 223 output stop valve, 23 gasification air storage component, 231 gasification air storage tank, 232 second drainage controller;

[0033] 3 heating structure, 31 heating control valve body, 32 electric heater, 33 heating pipeline;

[0034] 4 time-sharing soot blowing structure, 41 cylinder assembly, 411 cylinder, 412 second pressure sensor, 42 air blowing channel, 43 pneumatic control valve, 44 ash bin assembly, 441 fly ash bin, 442 branch gasification tank body, 443 central gasification tank body, 401 ash discharge port;

[0035] 5. Overall control structure, 51. PLC controller, 52. frequency converter. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0038] The time-sharing wheeled ash silo gasification air system according to some embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0039] like Figures 1 to 6 As shown, the present embodiment discloses a time-sharing rotary ash bin gasification air system, comprising: a gasification air input structure 1, the gasification air input structure 1 is used to communicate with the outside and input gasification air; a drying storage structure 2, the drying storage structure 2 is connected to the gasification air input structure 1, and the drying storage structure 2 is used to input dry clean gas; a heating structure 3, the heating structure 3 is connected to the drying storage structure 2, and the heating structure 3 is used to heat the gas; a time-sharing soot blowing structure 4, the time-sharing soot blowing structure 4 is connected to the heating structure 3, and the time-sharing soot blowing structure 4 is provided with an ash discharge port 401, and the ash discharge port 401 is used to communicate with the outside; a general control structure 5, the general control structure 5 is used to control the control valve body of the gasification air input structure 1, the drying storage structure 2, the heating structure 3 and the time-sharing soot blowing structure 4.

[0040] The present application discloses a time-sharing rotary ash silo gasification wind system. First, the gasification wind input structure 1 is connected to the outside to introduce gasification wind, which provides a basic gas source for the operation of the entire system and ensures that there is sufficient gas to fluidize the fly ash. The dry storage structure 2 connected to it plays a key role. It can dry and purify the input gasification wind to remove pollutants such as moisture, impurity particles and oil. In this way, after the dry and clean gasification wind enters the system, it effectively avoids the fly ash from getting damp and agglomerating, so that it always maintains good physical and chemical properties, greatly improves the fluidization effect of the fly ash in the silo, and lays a solid foundation for subsequent smooth unloading. The purification function of the dry storage structure 2 also reduces the wear and blockage of impurities on the internal pipes, valves, and ventilation devices of the system, prolongs the service life of the equipment, and effectively ensures that the gasification wind system can operate stably for a long time. At the same time, the dry gas source makes it easier to fluidize the fly ash under the same gasification wind pressure and flow rate, which means that the system can reduce the gasification wind energy consumed to achieve the ideal fluidization effect, thereby achieving the goal of reducing energy consumption. The heating structure 3 is connected to the dry storage structure 2, and by providing heat to the compressed air, the temperature of the compressed air is made higher than its dew point, ensuring that the gasification air entering the ash bin will not drop to the dew point and precipitate moisture. This plays a vital role in preventing the fly ash from getting damp and agglomerating and maintaining its good fluidity in the bin, and improves the quality of the fly ash as a whole, making it more in line with the requirements of subsequent use or treatment. The time-sharing soot blowing structure 4 is connected to the heating structure 3 and is provided with a ash discharge port 401. Under the precise control of the general control structure 5, the rhythm of the gasification air output from the fly ash bin can be precisely controlled. By reasonably setting the interval time of soot blowing, not only the stable fluidization state of the fly ash in the bin is maintained, and the problems of poor fluidity caused by the re-aggregation of particles and the blockage and accumulation of the ash discharge port 401 are avoided, but also only one control valve needs to be opened each time to blow air to different positions, so that the fly ash can obtain sufficient gas power in each area, ensuring that the fly ash everywhere can maintain good fluidity. In addition, this precise time-sharing control also helps to avoid unnecessary energy waste, reduces the electricity consumption of the heating structure 3 while reducing the gas consumption, achieves energy saving and consumption reduction in many aspects, and further improves the economy of the system. The general control structure 5 uniformly controls the control valve bodies of the gasification air input structure 1, the drying storage structure 2, the heating structure 3 and the time-sharing soot blowing structure 4, making the coordination between the various parts of the entire system closer and more orderly. Each structure can make corresponding adjustments in time according to the actual working conditions, give full play to its own advantages, and jointly ensure the efficient, stable and energy-saving operation of the time-sharing rotary ash silo gasification air system, which fully meets the diverse needs of the fly ash silo for the gasification air system.Compared with the traditional fly ash storage gasification air system, one ash storage corresponds to one Roots blower, plus a spare Roots blower that can supply air to all ash storages. Not only does it consume a lot of energy, but in cold and humid weather, the gasification air contains more water, making it difficult to ensure that all the fly ash in the ash storage has a sufficiently high temperature, resulting in condensation in the air in the storage, which makes the fly ash damp and brings the hidden danger of fly ash compaction. The present invention can not only reduce the gas consumption, but also reduce the power consumption for heating, greatly reducing energy consumption, and eliminating the hidden danger of fly ash compaction. It can ensure that within a 4-5 year storage cleaning cycle, there will be no failure of fly ash compaction and ash discharge blockage.

[0041] like Figure 1 and Figure 2 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the gasification wind input structure 1 includes an air compressor assembly 11, an input channel assembly 12 and an input storage tank assembly 13, the air compressor assembly 11 is used to connect to the outside and input gas, the input channel assembly 12 is arranged on the air compressor assembly 11, the input storage tank assembly 13 is arranged on the input channel assembly 12, and the input channel assembly 12 is connected to the dry storage structure 2. By arranging the input channel assembly 12 on the air compressor assembly 11 and the input storage tank assembly 13 on the input channel assembly 12, and then using the air compressor assembly 11 to inhale the outside air, firstly, while inhaling the air, the air compressor assembly 11 will also compress the air and increase its pressure to ensure that the air can flow along a predetermined path, and provide sufficient power for operations such as fluidization of fly ash. Secondly, the input channel assembly 12 is arranged on the air compressor assembly 11, which provides a clear transmission path for the compressed air. Finally, the input storage tank assembly 13 is set on the input channel assembly 12, which can concentrate the gas in one place and accurately control the gas pressure when releasing the gas pressure. Appropriate gas pressure is one of the key factors to ensure good fluidization of fly ash. Too high gas pressure may cause excessive fluidization of fly ash and generate dust and other problems; too low gas pressure cannot fully fluidize the fly ash, affecting its fluidity and operations such as unloading and transportation. By accurately controlling the gas pressure released by the input storage tank assembly 13, the fly ash can be provided with just the right fluidization power, so that the fly ash can maintain a good fluidization state in the warehouse and improve the work efficiency of the system. At the same time, the input storage tank assembly 13 can also be used as an emergency gas source. When the air compressor assembly 11 fails, the gas source stored in the input storage tank assembly 13 can continue to provide gasification wind support for the system to avoid poor fluidization of fly ash in the warehouse due to sudden interruption of the gas source.

[0042] like Figure 1As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the number of air compressor assemblies 11 is multiple. By setting the number of air compressor assemblies 11 to multiple, and multiple air compressors can serve as backup for each other, compared with the traditional fly ash silo gasification air system, a fly ash silo is usually equipped with a Roots blower and an electric heater for air supply, plus a backup Roots blower. Although the structure is simple and reliable, due to the low air supply pressure of the Roots blower, the rated pressure is 0.08MPa, and it is difficult for the system to remove the water vapor in the gasification air. An electric heater must be used to heat the gasification air to ensure that the air in the silo does not condense and precipitate water droplets. However, in cold and humid weather, the gasification air contains more water. Although there is an electric heater to heat the gasification air, it is still difficult to ensure that all the fly ash in the ash silo has a sufficiently high temperature, resulting in condensation in the air in the silo, causing the fly ash to become damp, bringing the hidden danger of fly ash compaction. At the same time, due to the low pressure of the gasification air delivered by the Roots blower, when the ash level in the ash bin is high, it is difficult to loosen the accumulated fly ash, which will reduce the fluidity of the fly ash and affect the ash unloading, and will also increase the hidden danger of fly ash compaction. In this case, the gasification air system needs to continuously supply heated air to the ash bin, which consumes huge energy. The present invention uses 4 air compressor assemblies 11 with the same power as the original Roots blower to achieve the effect of mutual backup. At the same time, a storage tank for input gas is provided to control the output pressure of the gasification air and ensure the fluidity of the fly ash; at the same time, the present invention is equipped with 2 gas storage tanks and multiple groups of air filtering and drying devices to remove most of the water in the compressed air, so that even when the electric heater behind fails and stops working, it can basically ensure that the gasification air entering the ash bin does not precipitate water during the heater shutdown and maintenance time. Therefore, the reliability of the present invention is greatly improved compared with the original system of one use and one backup. Of course, the user can adjust the number of air compressor assemblies 11 and the number of drying assemblies 21 according to actual conditions.

[0043] like Figure 1 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the number of heating structures 3 is multiple, and the multiple heating structures 3 are respectively connected to the dry storage structure 2. By setting the number of heating structures 3 to multiple, and the multiple heating structures 3 are respectively connected to the dry storage structure 2, when the ash bin gasification air storage tank in the dry storage structure 2 fails or needs to be repaired, the dry airflow can bypass the gasification air storage tank 231 through the dry air auxiliary channel 222, and then be heated by the heating structure 3, and then enter the ash bin, so as to ensure that the fly ash bin gasification air system can operate continuously and stably, and improve the reliability of system operation.

[0044] like Figure 7As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the number of time-sharing soot blowing structures 4 is multiple, and the multiple time-sharing soot blowing structures 4 are all connected to the heating assembly, and the heating assembly includes multiple heating structures 3. By setting the number of heating structures 3 to multiple, the multiple heating structures 3 are respectively connected to the drying storage structure 2, and the multiple time-sharing soot blowing structures 4 are connected to the multiple heating structures 3 together, when a certain heating structure 3 needs to be repaired, the airflow after drying can be heated by another heating structure 3, reducing the risk of the entire system shutting down due to heating equipment failure, improving the reliability of system operation, and ensuring that the fly ash storage gasification air system can operate continuously and stably.

[0045] like Figure 1 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the number of time-sharing soot blowing structures 4 and heating structures 3 is multiple, and the multiple time-sharing soot blowing structures 4 are connected to the multiple heating structures 3 in a one-to-one correspondence. By setting the number of time-sharing soot blowing structures 4 to multiple, and the multiple time-sharing soot blowing structures 4 are connected to the multiple heating structures 3 in a one-to-one correspondence, the dried gasification air can be heated specifically and all the gasification air can be transported to each fly ash bin, so as to achieve efficient fluidization treatment of multiple fly ash bins at the same time, and improve the overall fluidization efficiency of fly ash. At the same time, when rapid unloading is required, opening multiple soot blowing structures at the same time can quickly make the fly ash reach an ideal fluidized state, speed up the unloading process, and improve the turnover efficiency of the fly ash bin.

[0046] like Figure 1 and Figure 2As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the air compressor assembly 11 includes an air compressor 111 and an air compressor control assembly 112, the air compressor 111 is used to connect to the outside and input gas, the air compressor 111 is connected to the input channel assembly 12, the air compressor control assembly 112 is arranged on the air compressor 111, and the air compressor control assembly 112 is used to detect the pressure of the air in the compressed air storage tank 131 and transmit it to the PLC controller 51 to control the on and off of the air compressor 111 input gas or the air compressor speed. The air compressor 111 of the air compressor assembly 11 is a low-pressure screw air compressor, and the air pressure provided by the air compressor 111 is 0.3~0.5MPa. By using the air compressor control assembly 112 and the PLC controller 51 arranged on the air compressor 111 to control the on and off of the air compressor 111 input gas to the input channel assembly 12, when the air compressors are mutually standby, the actual demand of the system for the gas source can be accurately matched, thereby achieving the purpose of energy saving. In the time-sharing rotary fly ash silo gasification air system, the demand for gasification air in different periods is different. By controlling the air compressor control component 112, only the air compressor that meets the current demand can be turned on according to the actual working conditions. For example, in the daily maintenance stage of the fly ash silo, the required gasification air volume is small, and only one air compressor needs to be started to maintain the basic fluidization conditions, without having to let all air compressors run, thus avoiding the energy waste caused by the inefficient operation of the air compressor and making the energy input closely match the actual demand. Moreover, since the air compressors are backup for each other, there is a certain redundancy design. If there is no frequency conversion control of the air compressor, the air compressor may be frequently started and stopped, resulting in excessive consumption of energy. The air compressor control component 112 can reasonably utilize this redundancy. When the system is operating normally and the demand for gasification air is relatively stable, only an appropriate amount of air compressors are turned on, and the remaining standby air compressors are in a closed state and do not consume energy. By setting the air compressor 111 as a low-pressure screw air compressor, the air compressor can provide an air pressure of 0.3~0.5MPa. The air compressor with the same power can reach 80% of the 0.08MPa air volume of the Roots blower of the traditional fly ash storage gasification air system, achieving the goal of increasing the wind pressure while keeping the air volume basically unchanged, so that the gasification air can diffuse more fully between the fly ash particles. When the air enters the fly ash layer at a higher pressure, it can more effectively break the agglomeration between the particles and make the fly ash particles disperse more evenly. This helps to improve the fluidity of the fly ash.

[0047] like Figure 1 and Figure 2As shown, in addition to the features of the above embodiments, the present embodiment further defines that: the input channel assembly 12 includes a main gasification air channel 121, an auxiliary gasification air channel 122 and an input stop valve 123, the main gasification air channel 121 and the auxiliary gasification air channel 122 are both arranged on the air compressor assembly 11, the main gasification air channel 121 and the auxiliary gasification air channel 122 are arranged relatively to each other, the input storage tank assembly 13 is arranged on the main gasification air channel 121, the number of the input stop valve 123 is multiple, and the multiple input stop valves 123 are respectively arranged on the main gasification air channel 121 and the auxiliary gasification air channel 122, and the main gasification air channel 121 and the auxiliary gasification air channel 122 are both connected to the dry storage structure 2. By setting both the main gasification wind channel 121 and the auxiliary gasification wind channel 122 on the air compressor assembly 11, and setting the input storage tank assembly 13 on the main gasification wind channel 121, under normal circumstances, the main gasification wind channel 121 undertakes the main gas transportation task, and transports the gas to the input storage tank assembly 13 for buffering and voltage stabilization. The auxiliary gasification wind channel 122 is used as a backup channel or in some special situations. For example, when the input storage tank assembly 13 needs to be repaired, the main channel needs to be maintained, a failure occurs, or the system has a special gas diversion requirement, the input stop valve 123 is controlled to open the auxiliary channel and close the main channel, so that the gasification wind bypasses the input storage tank assembly 13 and enters the auxiliary channel, allowing the auxiliary channel to play a role, thereby increasing the flexibility and reliability of the system.

[0048] like Figure 1 and Figure 2 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the input storage tank assembly 13 includes a compressed air storage tank 131, a first pressure sensor 132 and a first drainage controller 133, the compressed air storage tank 131 is connected to the input channel assembly 12, and the first pressure sensor 132 and the first drainage controller 133 are both arranged on the compressed air storage tank 131. By connecting the compressed air storage tank 131 with the input channel assembly 12, and arranging the first pressure sensor 132 and the first drainage controller 133 on the compressed air storage tank 131, the compressed air storage tank 131 can play the role of buffering, storage and pressure control after being connected to the input channel assembly 12. The compressed air pressure and flow rate output by the air compressor may fluctuate, and these fluctuations will be buffered when the air enters the storage tank. The first pressure sensor 132 can sense the air pressure in the tank in real time, which is very critical for the precise control of the system. The pressure change in the storage tank can be accurately understood through the first pressure sensor 132, providing support for the subsequent ideal gasification wind pressure. The first drainage controller 133 can remove moisture from the compressed air. In the process of compressing air, the water vapor in the air will condense into some liquid water due to the increase in pressure, which ensures the dryness of the gasification air used for fly ash fluidization to a certain extent and helps to maintain the good physical properties of the fly ash.

[0049] like Figure 1 and Figure 3 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the drying storage structure 2 includes a drying component 21, a drying wind output channel 22 and a gasification wind storage component 23, the number of the drying components 21 is multiple, the multiple drying components 21 are connected to the gasification wind input structure 1 one by one, the drying wind output channel 22 is connected to the multiple drying components 21 and the heating structure 3, and the gasification wind storage component 23 is arranged on the drying wind output channel 22. By connecting the multiple drying components 21 to the gasification wind input structure 1 one by one, the system can flexibly adjust the drying strategy according to actual needs. Under different working conditions, such as different seasons, different fly ash humidity requirements, etc., these changes can be adapted by controlling the working states of different drying components 21. For example, in humid seasons, more drying components 21 can be opened or their drying intensity can be increased to cope with the increase in humidity in the air; while in dry seasons, the number of drying components 21 used can be appropriately reduced or their working intensity can be reduced, so as to achieve the purpose of energy saving and optimizing system operation. This flexibility can better meet the various requirements of the system for gasification wind drying and improve the adaptability of the system. At the same time, multiple drying components 21 are equivalent to a redundant design. When one of the drying components 21 fails, the other drying components 21 can still work normally, continue to dry the gasification air, and maintain the basic drying function of the system. This can reduce the risk of the entire system shutting down due to the failure of the drying equipment, improve the reliability of the system operation, and ensure that the fly ash warehouse gasification air system can operate continuously and stably. The dry air output channel 22 is connected with multiple drying components 21 and the heating structure 3, and the gasification air storage component 23 is set on the dry air output channel 22, which can buffer, stabilize and store the dry air, so that the dry air pressure and flow entering the subsequent part of the system are more stable, ensuring that the gasification air can provide sufficient air volume and air pressure to the ash warehouse. At the same time, the gasification air storage component 23 can also be used as an emergency air source. When the dry air output channel 22 is partially blocked, the dry air stored in the gasification air storage component 23 can continue to provide air source support for the system, avoiding poor fluidization of fly ash in the warehouse due to sudden interruption of the air source.

[0050] like Figure 1 and Figure 3As shown, in addition to the features of the above-mentioned embodiment, the present embodiment further defines that: the drying component 21 includes a drying stop valve 211, an air filter 212, a refrigerated dryer 213 and a drying pipeline 214, the number of the drying stop valves 211 is two, the two drying stop valves 211 are respectively arranged at both ends of the drying pipeline 214, the air filter 212 and the refrigerated dryer 213 are sequentially arranged on the drying pipeline 214, and the drying pipeline 214 is connected with the gasification wind input structure 1 and the drying wind output channel 22. By arranging the two drying stop valves 211 at both ends of the drying pipeline 214, and then arranging the air filter 212 and the refrigerated dryer 213 sequentially on the drying pipeline 214, and the drying pipeline 214 is connected with the gasification wind input structure 1 and the drying wind output channel 22, and arranging the drying stop valves 211 at both ends of the drying pipeline 214, the opening and closing of the drying process can be accurately controlled. When the system needs to dry the gasified air, the two valves can be opened to allow the gasified air to enter the drying pipeline 214 for drying; when the system does not need to dry or needs to maintain or overhaul the drying equipment, the two valves can be closed to effectively isolate the drying pipeline 214 and the equipment inside it, avoiding unnecessary gas flow and equipment operation. The air filter 212 and the refrigerated dryer 213 are sequentially arranged in the drying pipeline 214 to preliminarily purify the gasified air entering the drying pipeline 214. The gasified air may contain various impurities, such as dust, particulate matter, etc. If these impurities enter the refrigerated dryer 213, they may affect its working efficiency and service life. The refrigerated dryer 213 can effectively remove moisture from the gasified air and provide dry gasified air for the fly ash warehouse. The dried gasified air can better prevent the fly ash from getting damp and agglomerating, which is conducive to the fluidization and transportation of the fly ash.

[0051] like Figure 1 and Figure 3As shown, in addition to the features of the above embodiments, this embodiment further defines that: the dry air output channel 22 includes a dry air main channel 221, a dry air auxiliary channel 222 and an output stop valve 223, the dry air main channel 221 and the dry air auxiliary channel 222 are both connected to the drying component 21 and the heating structure 3, the dry air main channel 221 and the dry air auxiliary channel 222 are arranged oppositely, the gasification wind storage component 23 is arranged on the dry air main channel 221, and the number of the output stop valves 223 is multiple, and the multiple output stop valves 223 are respectively correspondingly arranged on the dry air main channel 221 and the dry air auxiliary channel 222. By connecting the dry air main channel 221 and the dry air auxiliary channel 222 with the drying component 21 and the heating structure 3, and arranging the gasification wind storage component 23 on the dry air main channel 221, gas distribution can be performed according to different needs of the system. Under normal circumstances, the main dry air channel 221 undertakes the main gas transportation task, and transports the dry air to the gasification air storage component 23 for buffering and pressure stabilization, etc., to provide a stable wind pressure for subsequent fly ash storage soot blowing. The auxiliary dry air channel 222 can be used as a backup channel or in some special situations. For example, when the main channel needs maintenance, fails, or the system has a special gas diversion requirement, the output stop valve 223 set in the main dry air channel 221 and the auxiliary dry air channel 222 is used to close the main channel and open the auxiliary channel, and guide the gas to the auxiliary dry air channel 222, so as to maintain the continuous operation of the time-sharing rotary ash storage gasification air system, increase the flexibility and reliability of the system, and avoid poor fluidization of fly ash in the storage due to sudden interruption of the gas source.

[0052] like Figure 1 and Figure 3 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the gasification wind storage component 23 includes a gasification wind storage tank 231 and a second drainage controller 232, the gasification wind storage tank 231 is connected to the dry wind output channel 22, and the second drainage controller 232 is arranged on the gasification wind storage tank 231. By connecting the gasification wind storage tank 231 with the dry wind output channel 22 and arranging the second drainage controller 232 on the gasification wind storage tank 231, the gasification wind storage tank 231 can play a buffering role after being connected to the dry wind output channel 22. The dry wind pressure and flow output from the dry wind output channel 22 may fluctuate, and these fluctuations will be buffered when the air enters the storage tank. At the same time, the gasification air storage tank 231 can also be used as an emergency air source. If there is an emergency problem in the dry air output channel 22 or the upstream equipment, the compressed air in the gasification air storage tank 231 can temporarily maintain the basic operation of the system, buying time for the system to be repaired or restore normal air supply, and preventing fluidization failures in the fly ash storage due to air source interruption, such as fly ash agglomeration or blockage of the ash discharge port.

[0053] like Figure 1 and Figure 4 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the heating structure 3 includes a heating control valve body 31, an electric heater 32 and a heating pipeline 33, the heating control valve body 31 and the electric heater 32 are sequentially arranged on the heating pipeline 33, and the heating pipeline 33 is connected with the drying storage structure 2 and the time-sharing soot blowing structure 4. By sequentially arranging the heating control valve body 31 and the electric heater 32 on the heating pipeline 33, and connecting the heating pipeline 33 with the drying storage structure 2 and the time-sharing soot blowing structure 4, the gasification air for drying treatment is heated to a temperature sufficient to fluidize the fly ash well and transported to the time-sharing soot blowing structure 4, and the gasification air with a higher temperature can better penetrate the gaps between the fly ash particles, making the fly ash easier to fluidize, thereby improving the efficiency of unloading and transportation. At the same time, after being heated by the electric heater 32, dry and high-temperature gasification air can be better provided for the fly ash storage. This connection method ensures that the entire system is continuous from drying of the air source to heating, which is beneficial to improving the overall efficiency of the system. It can also provide stable quality gasification air for the fly ash storage, prevent the fly ash from getting damp and agglomerating, and maintain a good fluidized state of the fly ash.

[0054] like Figure 1 and Figure 5As shown, in addition to the features of the above-mentioned embodiments, the present embodiment further defines: the time-sharing soot blowing structure 4 includes a steam cylinder assembly 41, a blowing pipeline 42, a pneumatic control valve 43 and an ash bin assembly 44, the steam cylinder assembly 41 is connected to the heating structure 3, the number of the blowing pipelines 42 is multiple, and the multiple blowing pipelines 42 are arranged on the steam cylinder assembly 41, the number of the pneumatic control valves 43 is multiple, and the multiple pneumatic control valves 43 are arranged one by one on the multiple blowing pipelines 42, the ash bin assembly 44 is arranged on the multiple blowing pipelines 42, and the ash bin assembly 44 is provided with an ash discharge port 401. By connecting the sub-cylinder assembly 41 with the heating structure 3, arranging multiple blowing pipelines 42 on the sub-cylinder assembly 41, and arranging multiple pneumatic control valves 43 one by one on the multiple blowing pipelines 42, and then arranging the ash storage assembly 44 on the multiple blowing pipelines 42, the sub-cylinder assembly 41 is connected with the heating structure 3, and 0.15~0.2MPa of gasification air is provided to the ash storage assembly 44. At the same time, it also plays a key role in distributing gas, distributing the concentrated high-temperature gasification air to the multiple blowing pipelines 42 according to a certain proportion and direction, ensuring that each blowing pipeline 42 can obtain sufficient air source, so that the fly ash in the ash storage assembly 44 can be fully and evenly fluidized. The multiple pneumatic control valves 43 are arranged one by one on the multiple blowing pipelines 42, and the gas flow in each blowing pipeline 42 can be accurately controlled. The total control structure 5 is used to realize the blowing of the fly ash in the ash storage assembly 44 in a time-sharing and round-by-round manner, ensuring the smooth flow of fly ash in various places in the fly ash storage. At the same time, multiple pneumatic control valves 43 can also realize flexible operation modes. According to different working stages and requirements, the working state of the blowing pipeline 42 can be adjusted by controlling the pneumatic control valves 43. When there is no ash discharge in the fly ash warehouse, each pneumatic valve is opened in sequence for 1 minute to supply air, and then closed. 5 seconds before the previous pneumatic valve is closed, the next pneumatic valve is opened, and so on. A cycle is completed in about 8 minutes to maintain the fluidization state of fly ash to prevent agglomeration; when the fly ash warehouse is discharged, all pneumatic gates are opened to supply air to ensure smooth flow of fly ash in various places in the fly ash warehouse and provide sufficient gasification air to enable smooth discharge of fly ash; after the ash discharge is completed, the pneumatic valves are controlled to switch to the non-ash discharge mode, and one is opened each time to save gas consumption and achieve the purpose of energy saving. One of the pneumatic control valves 43 corresponds to the central gasification tank at the ash discharge port 401. When there is fly ash in the ash warehouse component 44, the pneumatic valve is often opened to blow air to ensure that the fly ash at the ash discharge port 401 is in a fluffy state. This flexible control method can better adapt to various working conditions of the ash bin component 44.

[0055] like Figure 1 and Figure 5As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the sub-cylinder assembly 41 includes a sub-cylinder 411 and a second pressure sensor 412, the sub-cylinder 411 is connected to the heating structure 3, the second pressure sensor 412 is arranged on the sub-cylinder 411, and the blowing pipeline 42 is arranged on the sub-cylinder 411. By connecting the sub-cylinder 411 with the heating structure 3, arranging the second pressure sensor 412 on the sub-cylinder 411, and connecting the sub-cylinder 411 with the heating structure 3, it becomes the key hub of gas distribution in the whole system. After the high-temperature gasification wind output from the heating structure 3 enters the sub-cylinder 411, it will be redistributed here, and the gas with a pressure of 0.15~0.2MPa will be actually transported to each branch pipeline of the blowing pipeline 42, thereby providing gasification wind for different areas of the ash bin, ensuring that each part of the ash bin can obtain a stable gas source supply, thereby achieving comprehensive and uniform fly ash fluidization. The second pressure sensor 412 can monitor the current pressure of the gasification air in the cylinder 411 in real time. This pressure range can provide sufficient power for subsequent gas transportation. If the pressure is too low, the gasification air may not be able to effectively fluidize the fly ash due to insufficient power during transportation to various areas of the ash bin, resulting in problems such as accumulation and agglomeration of the fly ash. If the pressure is too high, on the one hand, it will cause greater pressure on the system's pipelines and equipment, increasing the risk of equipment damage; on the other hand, it may cause the gasification air to flow too fast in the ash bin, resulting in excessive fluidization of the fly ash and the generation of dust and other undesirable phenomena.

[0056] like Figure 1 , Figure 5 and Figure 6As shown, in addition to the features of the above-mentioned embodiments, the present embodiment further defines that: the ash bin assembly 44 includes a fly ash bin 441, a branch gasification tank body 442 and a central gasification tank body 443, the fly ash bin 441 is arranged on a plurality of blowing pipes 42, the number of the branch gasification tank bodies 442 is multiple, the plurality of branch gasification tank bodies 442 and the central gasification tank body 443 are all arranged on the fly ash bin 441, the plurality of branch gasification tank bodies 442 are connected to the plurality of blowing pipes 42 in a one-to-one correspondence, the central gasification tank body 443 is connected to one of the blowing pipes 42, the fly ash bin 441 is provided with an ash discharge port 401, the number of the ash discharge port 401 is multiple, and the plurality of ash discharge ports 401 are arranged relative to the air outlet of the central gasification tank body 443. By setting the fly ash reservoir 441 on multiple blowing pipelines 42, and connecting the eight branch gasification tanks 442 to the eight blowing pipelines 42 one by one, connecting the central gasification tank 443 to the ninth blowing pipeline 42, and setting the normally open air outlet of the central gasification tank 443 near multiple ash discharge ports 401, the fly ash at the ash discharge ports 401 is ensured to be in a fluffy state, avoiding the problem of unsmooth discharge caused by fly ash compaction. The connection of multiple blowing pipelines 42 to the fly ash reservoir 441, and the connection of the branch gasification tanks 442 and the central gasification tank 443 to the corresponding blowing pipelines 42 respectively, realize the comprehensive fluidization of the fly ash in the fly ash reservoir 441. The gasification air delivered from the blowing pipeline 42 is evenly distributed in the fly ash bin 441 through the branch gasification tank 442 and the central gasification tank 443, so that the fly ash can be affected by the gasification air in all areas. This comprehensive coverage method can effectively avoid the fluidization dead corners of the fly ash in the bin, ensure that the entire fly ash pile can be in a good fluidization state, and provide a basis for efficient unloading. When there is no ash in the fly ash bin 441, each branch gasification tank 442 is opened in turn for 1 minute to supply air, and then closed. 5 seconds before the branch gasification tank 442 is closed, the next branch gasification tank 442 is opened, and so on. A cycle is completed in about 8 minutes. When the fly ash depot 441 is discharged, the branch gasification tanks 442 are all opened to supply air under the command of the general control structure 5, ensuring the smooth flow of fly ash in various places in the fly ash depot 441, so that the fly ash can be efficiently discharged from multiple discharge ports 401, and the coordinated work between them further ensures the unloading efficiency; after the discharge is completed, the general control structure 5 controls all gasification tanks to switch to the non-discharge mode, and each time one is opened, the gas consumption is saved, achieving the purpose of energy saving. The time-sharing and zoned rotation gas supply mode, compared with the original system of a single Roots blower full-loaded long-term gas supply to a fly ash depot, reduces the gas consumption while ensuring the fluffy fly ash, and also reduces the power consumption of the electric heater 32, reducing the overall energy consumption.

[0057] like Figure 1As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the overall control structure 5 includes a PLC controller 51 and a frequency converter 52, the PLC controller 51 and the frequency converter 52 are integrated, and the overall control structure 5 is electrically connected to the control valve body of the gasification air input structure 1, the drying storage structure 2, the heating structure 3 and the time-sharing soot blowing structure 4. By integrating the PLC controller 51 and the frequency converter 52 to form the overall control structure 5, it is possible to achieve centralized and precise control of the control valve body of the entire time-sharing rotary ash silo gasification air system. The PLC controller 51 can monitor and logically judge the operating status of each device in the system according to the preset program and algorithm. The frequency converter 52 can accurately adjust the speed of the motor and other equipment according to the instructions of the PLC controller 51, thereby controlling the flow rate, pressure and other parameters of the gasification air. This integrated control method avoids the signal delay or mismatch problem that may occur between multiple independent control units, ensures that each part of the system can work together according to the precise time sequence and parameter requirements, and ensures that the time-sharing rotary ash silo gasification air system can operate efficiently under various working conditions.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A time-sharing rotary ash silo gasification air system, characterized in that: The time-sharing rotary ash silo gasification air system comprises: A gasification wind input structure (1), the gasification wind input structure (1) is used to connect to the outside and input gasification wind; A dry storage structure (2), the dry storage structure (2) being in communication with the gasification wind input structure (1), the dry storage structure (2) being used to input dry clean gas; A heating structure (3), the heating structure (3) being in communication with the dry storage structure (2), the heating structure (3) being used for heating gas; A time-sharing soot blowing structure (4), the time-sharing soot blowing structure (4) being in communication with the heating structure (3), the time-sharing soot blowing structure (4) being provided with a soot discharge port (401), the soot discharge port (401) being used for communicating with the outside; A general control structure (5), the general control structure (5) is used to control the control valve bodies of the gasification air input structure (1), the drying storage structure (2), the heating structure (3) and the time-sharing soot blowing structure (4); The gasification wind input structure (1) comprises an air compressor assembly (11), an input channel assembly (12) and an input storage tank assembly (13); the air compressor assembly (11) is used to communicate with the outside and input gas; the input channel assembly (12) is arranged on the air compressor assembly (11); the input storage tank assembly (13) is arranged on the input channel assembly (12); and the input channel assembly (12) is in communication with the dry storage structure (2); There are a plurality of air compressor assemblies (11), a plurality of heating structures (3), and the plurality of heating structures (3) are respectively connected to the dry storage structure (2); there are a plurality of time-sharing soot blowing structures (4) and the heating structures (3), and the plurality of time-sharing soot blowing structures (4) are respectively connected to the plurality of heating structures (3) in a one-to-one correspondence; The drying storage structure (2) comprises a drying component (21), a drying air output channel (22) and a gasification air storage component (23); the drying components (21) are multiple in number, the multiple drying components (21) are respectively connected to the gasification air input structure (1) one by one, the drying air output channel (22) is connected to the multiple drying components (21) and the heating structure (3), and the gasification air storage component (23) is arranged on the drying air output channel (22); The time-sharing soot blowing structure (4) comprises a steam cylinder assembly (41), a blowing pipeline (42), a pneumatic control valve (43) and an ash bin assembly (44); the steam cylinder assembly (41) is in communication with the heating structure (3); there are a plurality of blowing pipelines (42), and the plurality of blowing pipelines (42) are arranged on the steam cylinder assembly (41); there are a plurality of pneumatic control valves (43), and the plurality of pneumatic control valves (43) are arranged on the plurality of blowing pipelines (42) in a one-to-one correspondence; the ash bin assembly (44) is arranged on the plurality of blowing pipelines (42); and the ash bin assembly (44) is provided with the ash discharge port (401); The steam cylinder assembly (41) comprises a steam cylinder (411) and a second pressure sensor (412); the steam cylinder (411) is in communication with the heating structure (3); the second pressure sensor (412) is arranged on the steam cylinder (411); the air blowing pipeline (42) is arranged on the steam cylinder (411); the ash bin assembly (44) comprises a fly ash bin (441), a branch gasification tank body (442) and a central gasification tank body (443); the fly ash bin (441) is arranged on a plurality of the air blowing pipelines (42); the branch gasification tank body (442) and the central gasification tank body (443); 2) is in multiple number, multiple branch gasification tank bodies (442) and the central gasification tank body (443) are all arranged on the fly ash bin (441), multiple branch gasification tank bodies (442) are connected to multiple blowing pipes (42) in one-to-one correspondence, the central gasification tank body (443) is connected to one of the blowing pipes (42), the fly ash bin (441) is provided with the ash discharge port (401), the number of the ash discharge port (401) is multiple, and the multiple ash discharge ports (401) are arranged relative to the air outlet of the central gasification tank body (443).

2. The time-sharing rotary ash silo gasification air system according to claim 1 is characterized in that: The air compressor assembly (11) comprises an air compressor (111) and an air compressor control assembly (112); the air compressor (111) is used to communicate with the outside and input gas; the air compressor (111) is connected to the input channel assembly (12); the air compressor control assembly (112) is arranged on the air compressor (111); the air compressor control assembly (112) is used to control the on and off of the gas input by the air compressor (111); the air compressor (111) of the air compressor assembly (11) is a low-pressure screw air compressor; the air pressure provided by the air compressor (111) is 0.3-0.5 MPa; And / or the input channel assembly (12) comprises a main gasification air channel (121), an auxiliary gasification air channel (122) and an input stop valve (123); the main gasification air channel (121) and the auxiliary gasification air channel (122) are both arranged on the air compressor assembly (11); the main gasification air channel (121) and the auxiliary gasification air channel (122) are arranged relative to each other; the input storage tank assembly (13) is arranged on the main gasification air channel (121); the number of the input stop valves (123) is plural; the plural input stop valves (123) are respectively arranged on the main gasification air channel (121) and the auxiliary gasification air channel (122); the main gasification air channel (121) and the auxiliary gasification air channel (122) are both connected to the dry storage structure (2); And / or the input storage tank assembly (13) includes a compressed air storage tank (131), a first pressure sensor (132) and a first drainage controller (133), the compressed air storage tank (131) is connected to the input channel assembly (12), and the first pressure sensor (132) and the first drainage controller (133) are both arranged on the compressed air storage tank (131).

3. The time-sharing rotary ash silo gasification air system according to claim 1 is characterized in that: The drying component (21) comprises a drying stop valve (211), an air filter (212), a refrigerated dryer (213) and a drying pipeline (214); the number of the drying stop valves (211) is two, and the two drying stop valves (211) are respectively arranged at two ends of the drying pipeline (214); the air filter (212) and the refrigerated dryer (213) are arranged in sequence on the drying pipeline (214); and the drying pipeline (214) is in communication with the gasification air input structure (1) and the drying air output channel (22); and / or the drying air output channel (22) comprises a drying air main channel (221), a drying air auxiliary channel (222) and an output stop valve (223); the drying air main channel (221) and the drying air auxiliary channel (222) are both in communication with the drying component (21) and the heating structure (3); the drying air main channel (221) and the drying air auxiliary channel (222) are arranged opposite to each other; the gasification air storage component (23) is arranged on the drying air main channel (221); the output stop valve (223) is multiple in number, and the multiple output stop valves (223) are respectively and correspondingly arranged on the drying air main channel (221) and the drying air auxiliary channel (222); And / or the gasification wind storage component (23) comprises a gasification wind storage tank (231) and a second drainage controller (232), the gasification wind storage tank (231) is connected to the drying wind output channel (22), and the second drainage controller (232) is arranged on the gasification wind storage tank (231).

4. The time-sharing rotary ash silo gasification air system according to claim 1 is characterized in that: The heating structure (3) comprises a heating control valve body (31), an electric heater (32) and a heating pipeline (33); the heating control valve body (31) and the electric heater (32) are arranged on the heating pipeline (33) in sequence; and the heating pipeline (33) is connected to the dry storage structure (2) and the time-sharing soot blowing structure (4).

5. The time-sharing rotary ash silo gasification air system according to claim 1 is characterized in that: The overall control structure (5) comprises a PLC controller (51) and a frequency converter (52), wherein the PLC controller (51) and the frequency converter (52) are arranged in an integrated manner, and the overall control structure (5) is electrically connected to the control valve bodies of the gasification air input structure (1), the drying storage structure (2), the heating structure (3) and the time-sharing soot blowing structure (4).

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