Multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke

Abstract

The application discloses a multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semicoke, and belongs to the field of solid waste treatment and fuel blending. The system comprises a sorting module, a drying module, a blending module and a control platform. The control platform is in communication connection with the sorting module, the drying module and the blending module, and controls the modules. The sorting module is used for separating the gasification slag containing high moisture and the pyrolysis semicoke. The drying module is used for converting the gasification slag with high water content into gasification slag with low water content. The blending module is used for feeding materials according to a blending ratio, so as to realize multi-source fuel blending. The system separates the pyrolysis side products, optimizes the blending, and obtains high-calorific-value fuel, thereby greatly improving the utilization efficiency of organic solid waste, realizing the collaborative treatment of multi-source solid waste, and having good popularization value.

Description

Technical Field

[0001] This invention belongs to the field of solid waste treatment and fuel blending, specifically relating to a multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke. Background Technology

[0002] In recent years, my country has vigorously developed its circular economy, strengthened institutional and policy support, enhanced technological, institutional, and model innovation, stimulated new momentum for circular development, and accelerated the formation of a green, low-carbon, and circular industrial system and an urban circular development system, effectively supporting the green and low-carbon transformation of the economy and society. However, the overall situation regarding the comprehensive utilization of bulk organic solid waste remains very serious, with low utilization rates, huge resource waste, and significant environmental risks. The large-scale accumulation of bulk solid waste not only occupies a large amount of land resources but also causes enormous resource waste. The large-scale accumulation of bulk solid waste has become one of the main factors inducing prominent regional environmental and safety problems, posing a significant challenge to improving the quality and stability of ecosystems. Against this backdrop, the country is vigorously promoting the construction of "zero-waste cities," aiming to promote green development and lifestyles, continuously advance the reduction and resource utilization of solid waste at the source, minimize landfill volume, and minimize the environmental impact of solid waste in urban development models.

[0003] Currently, the problems in my country's solid waste disposal include: 1) low effective utilization rate of biomass resources around cities; 2) huge demand for disposal of urban organic solid waste, including domestic waste, waste textiles, sludge, waste electrical and electronic products, and medical waste; and 3) large output of industrial organic solid waste such as gasification slag generated by the coal chemical industry, which cannot be used as fuel due to its low calorific value, posing a huge disposal challenge.

[0004] Therefore, a solution is needed that combines the existing coal chemical industry with biomass resources and organic solid waste around cities to obtain the required mixed fuel by processing coal industrial waste and urban garbage, thereby improving the utilization rate of waste resources. Summary of the Invention

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke. In this system, the desired high-calorific-value fuel is obtained by separating the pyrolysis side products and optimizing the blending, thereby greatly improving the utilization efficiency of organic solid waste.

[0006] To achieve the above objectives, the present invention provides a multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke, including a sorting module, a drying module, a blending module, and a control platform;

[0007] The sorting module is used to separate the gasification slag containing high moisture content from the pyrolysis semi-coke phase. The sorting module is connected to the drying module and the blending module respectively through a transmission mechanism to transport the gasification slag and the pyrolysis semi-coke to the drying module and the blending module respectively.

[0008] The drying module and the blending module are connected by a transmission mechanism, which is used to transport the dried gasification slag to the blending module. The blending module adds materials according to the proportion to achieve multi-source fuel blending.

[0009] The control platform is communicatively connected to the sorting module, the drying module, and the blending module, and controls each module.

[0010] As a further improvement of the present invention, it also includes a data acquisition module, which includes an image detection component for detecting various materials and final products, an operation status monitoring component for monitoring the operation status of the drying module, sorting module and blending module, and a safety monitoring component for monitoring the overall process flow.

[0011] As a further improvement of the present invention, the control platform includes a data receiving module, a data processing module, an instruction sending module, and an interaction module;

[0012] The data receiving module receives various types of data information collected by the data acquisition module and feeds the information back to the data processing module;

[0013] The data processing module processes the above information to determine the corresponding operation. The instruction sending module sends instruction signals to the corresponding module to control the blending system, and the data is displayed through the interaction module.

[0014] As a further improvement of the present invention, the drying module includes at least one drying device, the drying device including a cavity for accommodating the material to be dried, a heat exchange tube for heating the internal space of the cavity, and a heat source;

[0015] The heat source and the heat exchange tube are connected by a pipeline, and the pipeline is equipped with a detection component and / or a regulating valve.

[0016] As a further improvement of the present invention, the heat source may be pyrolysis flue gas and / or high-temperature steam.

[0017] As a further improvement of the present invention, the blending module includes at least two blending devices, each of which includes a hopper and a feeder disposed below the hopper to deliver materials.

[0018] As a further improvement of the present invention, the blending device further includes a support, which is connected to the hopper and is used to support the hopper;

[0019] A movable mechanism is provided corresponding to the support to realize the movement of the mixing device.

[0020] This invention also proposes a multi-source fuel blending method, based on the above-mentioned multi-source fuel blending system, characterized by comprising the following steps:

[0021] S1. Staff determine the target blended fuel quality parameters;

[0022] S2. The control platform formulates a blending ratio scheme based on the target blended fuel quality parameters and the material parameters in the blending module.

[0023] S3. The control platform controls the material discharge flow of the blending module to control the proportion of added materials.

[0024] S4. After the material is placed in the designated location, the resulting fuel product is tested to confirm that it matches the target quality parameters.

[0025] As a further improvement of the present invention, in step S2, by combining the calorific value, industrial analysis, and moisture requirements of the target blended fuel with relevant parameters of gasification slag, pyrolysis semi-coke, and other fuels, a multi-source fuel ratio multi-objective decision model is established. While considering the combustion characteristics of the fuel, the model maximizes the consumption of gasification slag and pyrolysis semi-coke, and finally calculates and outputs the component blending ratio scheme of different materials.

[0026] As a further improvement of the present invention, when the target requirements for the materials to be added and the blended fuel change, the control platform can re-formulate the blending plan and control the addition process of the blending module.

[0027] and / or

[0028] Control the drying module to adjust the quality parameters of the gasification slag.

[0029] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0030] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0031] (1) The present invention provides a multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke. It adopts a process route of sorting the products on the pyrolysis side, separating the gasification slag and pyrolysis semi-coke, drying the gasification slag, and then optimizing the blending of pyrolysis semi-coke, dried gasification slag and other types of fuel to produce high-calorific-value fuel. A multi-source fuel blending system is designed, which can greatly improve the utilization efficiency of organic solid waste.

[0032] (2) The multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke of the present invention, through the data processing module and instruction sending module in the control platform, determines the blending ratio and quality control of gasification slag by combining the quality parameters of the raw materials to be added and the quality parameters of the target blended fuel, and always obtains the optimal solution, maximizes the utilization of organic solid waste products such as pyrolysis semi-coke and gasification slag, greatly improves the utilization efficiency of organic solid waste, and avoids a large waste of resources;

[0033] (3) The multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke of the present invention sends part of the mixed gas after organic solid waste pyrolysis to a coal-fired boiler nearby. This can replace part of the boiler fuel, save coal, and reduce the enterprise's fuel cost. On the other hand, the gaseous pollutants generated by pyrolysis can be treated using the existing environmental protection equipment of the coal-fired boiler, which improves the utilization efficiency of the environmental protection equipment and can significantly reduce the enterprise's construction and operation costs.

[0034] (4) The multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke of the present invention, through the pyrolysis of organic solid waste to produce high-calorific-value semi-coke (low calorific value ~6000Kcal / kg) and high-moisture, low-calorific-value gasification residue (low calorific value only ~2500Kcal / kg), through precise blending, form high-calorific-value (3500Kcal / kg) solid fuel, which can be fed into coal-fired boilers to replace part of the coal, thereby saving the enterprise's fuel costs, and can also supply the power coal demand of the thermal power industry in the province. At the same time, it has good social and economic benefits. In addition, the heat source of the gasification slag dryer can be directly from the steam of the coal-fired power plant or the waste heat of the pyrolysis flue gas, and the steam can also be recovered and reused in the boiler, without causing resource waste.

[0035] (5) The multi-source fuel blending system and method based on gasification slag and solid waste pyrolysis semi-coke of the present invention utilizes waste textiles from the surrounding urban areas as the main organic solid waste raw materials, combined with wood, agricultural and forestry organic solid waste, to achieve multi-source synergistic treatment of organic industrial solid waste from industries such as wood / furniture, agricultural and forestry, municipal / industrial sludge, garment processing, and gasification waste residue from the coal chemical industry, turning waste into treasure and making it a resource. Attached Figure Description

[0036] Figure 1 This is an overall schematic diagram of the multi-source fuel blending system in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the data flow in the multi-source fuel blending system in an embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] Example:

[0044] Please see Figures 1-2 The multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke in a preferred embodiment of the present invention includes a sorting module, a drying module, a blending module, and a control platform. The sorting module is connected to both the drying module and the blending module via a transmission mechanism, allowing the sorting module to separate the solid waste semi-coke and gasification slag generated on the pyrolysis side and transport them to the blending and drying modules respectively. The drying module is also connected to the blending module to transport the dried gasification slag to the blending module. Simultaneously, the sorting module, drying module, and blending module are all connected to the main control platform, which receives relevant information from each module in real time and sends command signals to each module to control each functional module. It should be noted that the multi-source fuel blending system proposed in this invention can be applied to various environments such as waste treatment plants or coal-fired power plants.

[0045] Furthermore, the pyrolysis side involves pyrolyzing organic solid waste to obtain a solid mixture including pyrolysis semi-coke and gasification slag, as well as oil and gas. The organic solid waste comprises organic solid waste from industrial processes and biomass resources. Industrially generated organic solid waste includes waste textiles, rubber, plastics, waste paper, and wood panels from industries such as textiles, papermaking, wood processing, plastics, rubber, and furniture manufacturing. Biomass resources include agricultural and forestry solid waste such as straw, rice husks, tobacco stalks, and sawdust. More preferably, the pyrolysis process in this application involves removing moisture from the primary organic solid waste using adaptive low-temperature pyrolysis (300–500°C) and converting its combustible components into pyrolysis semi-coke, oil, and gas with better fuel characteristics. Specifically, the pyrolysis oil and gas produced after pyrolysis of the organic solid waste in the pyrolysis furnace are separated by an oil-gas separator. The separated pyrolysis oil and partially pyrolyzed gas are then recycled to a burner to generate high-temperature flue gas, which is then fed back into the pyrolysis furnace as an energy source for the pyrolysis process.

[0046] The drying module includes at least one drying device for drying gasification slag containing moisture to obtain gasification slag with low moisture content that can be used as fuel feedstock. Further, the drying device includes a cavity for containing the material to be dried, heat exchange tubes for heating the internal space of the cavity, and a heat source for providing heat, and employs an air heat pump to deliver gas from the heat source to the heat exchange tubes.

[0047] In a preferred embodiment, the heat source for the drying equipment can be directly the waste heat from the flue gas on the pyrolysis side. That is, a flue gas channel is established between the drying equipment and the pyrolysis side. After the flue gas on the pyrolysis side has heated the organic solid waste in the pyrolysis furnace, it can be introduced into the heat exchange tubes of the drying equipment as a heat source. The drying of the gasification slag in the drying equipment is completed through indirect heat exchange. A corresponding pollutant purification device is also provided to remove pollutants such as SO2 and dust from the low-temperature flue gas after drying, which is then finally discharged into the atmosphere. Correspondingly, the drying equipment is also equipped with a wastewater discharge port to collect the moisture evaporated from the gasification slag at high temperature and discharge it from the drying equipment.

[0048] In another preferred embodiment, the multi-source fuel blending system of this application is applied in a coal-fired power plant. The drying equipment can use the high-temperature steam in the power plant as a heat source, pass the high-temperature steam into the heat exchange tube of the drying equipment, and after the drying process is completed, it is recycled and used as circulating water by the power plant unit.

[0049] Furthermore, regardless of whether the drying equipment uses pyrolysis flue gas or high-temperature steam as a heat source, a regulating valve is installed in the pipeline between the heat source and the drying equipment. This regulating valve is connected to the control platform, and its opening degree can be controlled to adjust the temperature, flow rate, pressure, and other relevant parameters of the pyrolysis flue gas or high-temperature steam in the heat exchange tubes. More preferably, in practical applications, this valve control can also be manual. Relevant information is sent to staff on the control platform, and the staff then performs manual operation.

[0050] Furthermore, the drying module also includes a temporary storage tank, in which the dried gasification slag can be temporarily stored. When needed, the gasification slag material in the temporary storage tank can be transported to the blending module via a digger or conveyor belt. Alternatively, depending on the actual situation, it can be directly transported to the blending module without passing through the temporary storage tank.

[0051] The blending module in this application includes at least two blending devices, each comprising a hopper and a feeder positioned below the hopper, with a corresponding support frame to support the entire blending device. Further, the feeder is equipped with a material weighing device to monitor the weight of the material in the hopper or the discharge rate. More preferably, the feeder is an activated feeder, and the material weighing device is an electronic belt scale. To allow for position adjustment of the blending devices, a movable mechanism can be provided corresponding to the support frame to enable overall movement of the blending devices.

[0052] In a preferred embodiment, the support frame is installed on the top of the factory building and is fixedly connected to the hopper by hoisting to support the hopper, feeder and other mechanisms. Correspondingly, a guide rail structure is installed on the top of the factory building, and the support frame and the guide rail structure are movably connected by a movable part, so that the support frame can reciprocate on the guide rail, thereby realizing the position adjustment of the mixing device.

[0053] In another preferred embodiment, the support is located below the hopper and includes four independent pillars, which are fixedly connected to the four corners of the hopper. At least one pulley is provided at the other end of each pillar to drive the mixing device to move. A locking mechanism is provided for each pulley to ensure that the position of the mixing device is fixed.

[0054] Furthermore, each blending unit is connected to the drying module, sorting module, and other fuel sources via a transmission mechanism to transport different fuel base components to the hoppers of the blending unit. Hoppers loaded with different materials are fed in measured quantities in appropriate proportions, and after mixing, multi-source fuels are obtained, achieving coupled blending of multiple fuel sources. Furthermore, the transport mechanism between the blending unit and the fuel sources can be one or more of a loader, excavator, or conveyor belt.

[0055] In one embodiment, the device has three hoppers, each loaded with pyrolytic semi-coke directly sorted by the sorting module, dried gasification slag, and thermal coal, respectively. During the blending process, the flow rate of each material can be adjusted by controlling the vibration frequency of the activated feeder or the opening of the discharge valve at the bottom of the hopper. A conveyor belt is installed at the discharge location to ensure that the proportion of material transported by the conveyor belt remains the same at any given time. Furthermore, each hopper's discharge location is directly equipped with a mixing storage tank, allowing for the proportional addition of a fixed amount of material, and the blending process is completed in the storage tank. Image monitoring devices are installed at the storage tanks or the stacking location of the blended fuel to collect relevant images and calculate calorific value and moisture content, or to obtain relevant information through manual sampling. More preferably, the blending device can switch between different storage tanks or stacking spaces under the action of a movable mechanism, depending on the actual situation.

[0056] It should be noted that in practice, the number of hoppers is not fixed. It can be set to two, where gasification slag and pyrolysis semi-coke are mixed in a specific ratio to obtain the required mixed fuel. Alternatively, it can be set to four or more, with other hoppers containing different specifications of power coal or other fuels to obtain mixed fuel.

[0057] Furthermore, to ensure real-time monitoring of each process step, a data acquisition module is also set up to obtain relevant information. This module includes operational status monitoring components, such as flow meters, thermometers, and pressure gauges, installed at the inlet and outlet of the heat exchanger tubes of the drying equipment. These sensors collect parameters such as flow rate, temperature, and pressure of the heat exchange gas entering and exiting the heat exchanger tubes, and feed this data back to the control platform, providing a basis for valve control of the heat exchanger tubes. It also includes weighing units installed in the hoppers and feeders of the blending module to monitor the discharge rate of the hoppers and / or feeders. Similarly, the data acquisition module also includes image detection components, including camera units installed at the outlets of the sorting module, drying module, and other fuel sources. These cameras transmit images of various raw materials to the control platform, where the data processing module analyzes the images to calculate the calorific value of the relevant raw materials. Furthermore, the data acquisition module also includes a safety monitoring component, which includes monitoring equipment such as camera units and temperature sensors to monitor each process and the working environment, so as to achieve safety monitoring of the entire process.

[0058] Furthermore, the control platform includes a data receiving module, a data processing module, an instruction sending module, and an interaction module. The data receiving module receives data information collected by the data acquisition module and control information sent by the interaction module, and organizes and feeds this information back to the data processing module. The data processing module processes the received information to determine the relevant operations, and the instruction sending module sends corresponding instruction signals to the drying module and the blending module to achieve control of the blending system.

[0059] like Figure 2 As shown, the data receiving module receives relevant information monitored by various sensors in the data acquisition module, including parameters of inlet steam or pyrolysis flue gas in the drying module, feeder status parameters, raw material flow parameters, and parameters of the blended mixture in the blending module. Furthermore, in practical applications, the calorific value detection of various basic fuels is not limited to image detection; it also includes calorific value detection through sampling and combustion methods. The resulting calorific value data is then uploaded to the data acquisition and receiving module by staff.

[0060] Furthermore, the data processing module processes the received information, including analyzing images of basic raw materials and calculating their corresponding calorific values; analyzing data uploaded by various safety sensors and promptly uploading the results to staff via the interactive module. More preferably, the data processing module can also perform blending ratio calculations. By using the calorific value, industrial analysis, and moisture requirements of the target blended fuel uploaded by the interactive module, combined with relevant parameters of gasification slag, pyrolysis semi-coke, and other fuels, a multi-source fuel blending multi-objective decision model is established. While considering fuel combustion characteristics, this model maximizes the consumption of gasification slag and pyrolysis semi-coke, ultimately calculating and outputting the component blending ratio scheme for different materials.

[0061] Furthermore, after the data processing module completes the proportioning calculation, it transmits the proportioning scheme to the instruction sending module. This module selects the corresponding operation instructions based on the proportioning scheme and sends them to each module in the blending system. For example, it adjusts the valve opening of the heat exchange tube to control the moisture content of the resulting gasification slag, and adjusts the vibration frequency of the activation feeder in each blending device and / or controls the valve opening of the hopper outlet to control the flow rate and composition of the raw materials.

[0062] Furthermore, the interactive module includes a data display screen, which displays the feed parameters of each material, the air intake parameters of the heat exchange tubes of the drying equipment, the material ratio parameters, the discharge parameters of each material, and the output parameters of the final product. At the same time, staff can also input various target parameters of the target blended fuel through the data display screen, and the data processing module will perform corresponding calculations for subsequent operations.

[0063] Furthermore, based on the above-mentioned blending system, this application also proposes a method for using the blending system, including the following steps:

[0064] S1. Staff members upload the calorific value, industrial analysis, and moisture requirements of the target blended fuel through the interactive module.

[0065] S2. The data processing module formulates the optimal blending ratio scheme based on the target blended fuel parameters and the material parameters in the hoppers of each blending device.

[0066] S3. The data processing module transmits the blending ratio scheme to the instruction sending module. The instruction sending module generates various instruction signals and sends them to each blending device in the blending module to control the discharge flow rate of the blending device, thereby realizing the control of the material ratio of the blending device.

[0067] S4. After being placed at the designated location, receive the relevant information of the final blended fuel product and confirm that it matches the target information.

[0068] Further, in a preferred embodiment, the raw materials are gasification slag and pyrolysis semi-coke. The dehydrated gasification slag yield is 219.81 t / d, with a moisture content of 10% and a calorific value of 2009.4 Kcal / kg; the pyrolysis semi-coke yield is 165.3 t / d, with a calorific value of 5600 Kcal / kg. The required solid fuel calorific value is 3590.5 Kcal / kg, therefore the mixing ratio of the gasification slag to the pyrolysis semi-coke is 1.33:1.

[0069] In another preferred embodiment, the raw materials include gasification slag, pyrolysis semi-coke, and thermal coal. The dehydrated gasification slag yield is 200 t / d, with a moisture content of 10% and a calorific value of 2000 Kcal / kg; the pyrolysis semi-coke feed rate is 150 t / d, with a calorific value of 5500 Kcal / kg; and the thermal coal has a calorific value of 5000 Kcal / kg. The required calorific value of the fixed mixed fuel should be maintained within 4000±50 Kcal / kg. Therefore, the mixing ratio (mass ratio) is: gasification slag: solid semi-coke: thermal coal = 8:6:7.

[0070] Furthermore, the above-mentioned method of using the blending system is a common method of use. However, in actual application, it does not always maintain a stable operating state. When various situations occur, this system can also control the actuators of each module (such as the heat exchange tube valves of the drying equipment, the feeder of the blending device, and the valves of the hopper) through the instruction sending module to perform adaptive operations to solve related problems.

[0071] In Scenario 1, the detection device installed at the feed inlet of the drying equipment detected changes in the moisture content and calorific value of the gasification slag, while other basic raw materials such as pyrolysis semi-coke and thermal coal remained unchanged. The blending system includes the following steps:

[0072] S101, The data processing module analyzes the gasification slag image to determine changes in its moisture content and calorific value, and calculates the corresponding parameter values ​​at this time.

[0073] S102. Send an instruction signal to the drying module through the instruction sending module to perform image detection at the discharge port. If the quality of the gasification slag after drying has changed at this time, transport the gasification slag to the temporary storage tank and provide feedback to the staff through the interaction module, and propose solutions, such as adjusting the heat exchange tube valve to stabilize the relevant properties of the gasification slag to the initial state, or re-formulate the blending plan.

[0074] S103. If the properties of the gasification slag are adjusted to the initial state, a control signal is sent to the heat exchange tube valve through the command sending signal to adjust the temperature value in the drying equipment, and then adjust the relevant parameters of the gasification slag to complete the adjustment of the quality parameters of the gasification slag.

[0075] S104. If a new blending scheme is formulated, a new optimal scheme is formulated based on the changed quality parameters of the gasification slag. At the same time, after the gasification slag in the previous hopper has been discharged, the blending process based on the new blending scheme is carried out.

[0076] Correspondingly, there are also scenario two where only pyrolysis semi-coke changes, scenario three where only thermal coal changes, and scenario four where both pyrolysis semi-coke and thermal coal change. For the above three scenarios, the solution is to formulate a new blending scheme. It is worth noting that in the actual application process, thermal coal and / or pyrolysis semi-coke need to be temporarily placed in a temporary storage tank to separate the two raw materials and ensure that the resulting blended product is within the error range as much as possible.

[0077] In scenarios five (where both the gasification slag and pyrolysis semi-coke change before drying), six (where both the gasification slag and thermal coal change before drying), and seven (where the quality of all raw materials changes), although the blending scheme is also re-formulated, the valves of the heat exchange tubes of the drying equipment can still be adjusted and controlled to obtain the most suitable gasification slag and use it as the corresponding raw material.

[0078] In Scenario 8, the quality parameters of the raw materials to be added remain stable. However, the staff needs to adjust the relevant parameters of the target blended fuel according to actual needs. In this case, the data processing module of the blending system in this application will formulate a new blending plan. At the same time, while formulating the blending plan, the drying module can be adjusted and controlled according to the fuel characteristics required by actual needs to obtain the most suitable gasification slag raw material, which will facilitate the subsequent blending process.

[0079] This invention discloses a multi-source fuel blending system and method based on gasification slag and pyrolysis semi-coke of solid waste. The system includes a sorting module, a drying module, a blending module, and a control platform. The control platform is communicatively connected to the sorting, drying, and blending modules to control each module. The sorting module separates the gasification slag and pyrolysis semi-coke phases containing high moisture content. The drying module converts the high-moisture gasification slag into low-moisture gasification slag. The blending module feeds materials according to a specified ratio to achieve multi-source fuel blending. The system also separates and further optimizes the blending of pyrolysis products to obtain the desired high-calorific-value fuel, significantly improving the utilization efficiency of organic solid waste.

[0080] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke, characterized in that, It includes a sorting module, a drying module, a blending module, and a control platform; among which: The sorting module is used to separate the gasification slag and pyrolysis semi-coke phase containing high moisture content. The sorting module is connected to the drying module and the blending module through a transmission mechanism to transport the gasification slag and pyrolysis semi-coke to the drying module and the blending module respectively. The drying module and the blending module are connected by a transmission mechanism, which is used to transport the dried gasification slag to the blending module; the blending module adds materials according to the proportion to achieve multi-source fuel blending; The control platform is communicatively connected to the sorting module, drying module, and blending module to control each module. The control platform includes a data receiving module, a data processing module, an instruction sending module, and an interaction module. The data receiving module receives data information collected by the data acquisition module and control information sent by the interaction module, and processes and feeds this information back to the data processing module. The data processing module processes the received information to determine the relevant operations, and the instruction sending module sends corresponding instruction signals to the drying module and blending module to control the blending system. The data is displayed through the interaction module. The data processing module is equipped with a blending ratio calculation function. By uploading the calorific value, industrial analysis, and moisture requirements of the target blended fuel through the interaction module, and combining relevant parameters of gasification slag, pyrolysis semi-coke, and other fuels, a multi-source fuel ratio multi-objective decision model is established. While considering the combustion characteristics of the fuel, the model maximizes the consumption of gasification slag and pyrolysis semi-coke, and finally calculates and outputs the component blending ratio scheme of different materials. After the data processing module completes the ratio calculation, the ratio scheme is transmitted to the instruction sending module. The instruction sending module selects the corresponding operation instruction according to the ratio scheme and sends it to each module in the blending system.

2. The multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke according to claim 1, wherein, It also includes a data acquisition module, which includes an image detection component for detecting various materials and final products, an operation status monitoring component for monitoring the operation status of the drying module, sorting module and blending module, and a safety monitoring component for monitoring the overall process flow.

3. The multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke according to any one of claims 1 to 2, wherein, The drying module includes at least one drying device, which includes a cavity for containing the material to be dried, a heat exchange tube for heating the internal space of the cavity, and a heat source. The heat source and the heat exchange tube are connected by a pipeline, and the pipeline is equipped with a detection component and / or a regulating valve.

4. The multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke according to claim 3, wherein, The heat source uses pyrolysis flue gas and / or high-temperature steam as the heat source.

5. The multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke according to any one of claims 1 to 2, wherein, The blending module includes at least two blending devices, each of which includes a hopper and a feeder located below the hopper to deliver materials.

6. The multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke according to claim 5, wherein, The blending device further includes a support frame connected to the hopper for supporting the hopper; A movable mechanism is provided corresponding to the support to realize the movement of the mixing device.

7. A method for blending multi-source fuels, implemented based on the multi-source fuel blending system based on gasification slag and solid waste pyrolysis semi-coke as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Staff determine the target blended fuel quality parameters; S2. The control platform formulates a blending ratio scheme based on the target blended fuel quality parameters and the material parameters in the blending module. S3. The control platform controls the material discharge flow of the blending module to control the proportion of added materials. S4. After the material is placed in the designated location, the resulting fuel product is tested to confirm that it matches the target quality parameters.

8. The multi-source fuel blending method according to claim 7, wherein, In step S2, by combining the calorific value, industrial analysis, moisture requirements, and relevant parameters of gasification slag, pyrolysis semi-coke, and other fuels of the target blended fuel, a multi-source fuel ratio multi-objective decision model is established. While considering the combustion characteristics of the fuel, the model maximizes the consumption of gasification slag and pyrolysis semi-coke, and finally calculates and outputs the component blending ratio scheme of different materials.

9. The multi-source fuel blending method according to claim 7 or 8, wherein, When the target requirements for the materials to be added and the blended fuel change, the control platform re-formulates the blending plan, controls the addition process of the blending module, and controls the drying module to adjust the quality parameters of the gasification slag.

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