Steam overheating treatment device for pulverized coal gasification gas pocket

Abstract

The utility model relates to the technical field of pulverized coal gasification devices, in particular to a steam overheating treatment device for a pulverized coal gasification gas pocket. Comprising a gasification furnace, a steam superheater, a medium-pressure air bag, a steam pipe network, a heating medium pump, a heating medium pipeline, a heating medium storage tank, a heating medium heat exchanger, a water supply pipeline, a safety valve, an outlet pipeline, a connecting assembly, a monitoring assembly and a control assembly, a heating medium pipeline is arranged on one side of the heating medium heat exchanger, a heating medium pump is arranged at one end of the heating medium pipeline, and a heating medium storage tank is arranged on one side of the heating medium pump. Efficient overheating and safety control of steam in the pulverized coal gasification process are achieved, stable and high-quality steam resources are provided for the downstream process, and meanwhile safe and stable operation of the whole gasification system is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pulverized coal gasification device technical field especially relates to a kind of pulverized coal gasification gas pocket steam superheating device. BACKGROUND

[0002] In the current coal utilization field, as a kind of efficient energy conversion mode, pulverized coal gasification technology has been widely applied, and the pulverized coal gasification process is mainly through gasification furnace to react with gasifying agent under high temperature and high pressure conditions, to generate gasification gas, while generating steam of certain temperature and pressure, however, in practical application, the initial generated steam is often of low quality, which cannot meet the requirements of subsequent high temperature and high pressure process, which limits the utilization efficiency of steam and the overall energy conversion efficiency to some extent.

[0003] In actual use process, the structure of traditional steam treatment device is complex, and the operation is cumbersome, and the energy consumption is high, which is not conducive to achieving the goal of energy saving and emission reduction, in addition, in the process of pulverized coal gasification, the waste heat generated is not fully utilized, causing waste of energy, and it is urgent to improve, and then the steam quality and energy utilization efficiency are not improved.

[0004] Therefore, in view of the above-mentioned problems that the steam quality and energy utilization efficiency are not improved, a pulverized coal gasification gas pocket steam superheating device can be designed, when the pulverized coal gasification device is used, the device first converts the pulverized coal into gasification gas through the gasification furnace, and generates steam of certain temperature and pressure, one side of the gasification furnace is provided with a medium-pressure gas pocket for collecting and storing these initial generated steam, in order to improve the quality of steam and meet the high temperature and high pressure requirements of subsequent process, a steam superheater is arranged, one end of the water supply pipeline is connected with the upper side of the medium-pressure gas pocket, to ensure that the steam superheater has enough water for heat exchange, the steam in the medium-pressure gas pocket is sent into the steam superheater through the connecting assembly, and the steam is further heated in the steam superheater to reach the required superheating temperature, in order to monitor the working state of the steam superheater in real time, the monitoring assembly can feed back the collected data to the control assembly, once the temperature or pressure of the superheated steam exceeds the set value, the control assembly will start immediately, and emergency measures can be automatically taken to ensure the safe operation of the device, and the heating medium heat exchanger is used to recover the waste heat generated in the steam superheating process, to improve the energy utilization efficiency, the heating medium flows through the heating medium heat exchanger for heat exchange under the driving of the heating medium pump, and then returns to the heating medium storage tank for storage, the device not only improves the quality of steam and energy utilization efficiency, but also ensures the safety and stability of the pulverized coal gasification process through the perfect monitoring and alarm system. SUMMARY

[0005] In order to overcome the pulverized coal gasification device in the process of using, the traditional steam treatment device structure is complex, the operation is complicated, and the energy consumption is high, which is not conducive to realize the goal of energy saving and emission reduction, in addition, in the process of pulverized coal gasification, the waste heat generated is not fully utilized, causing waste of energy, which needs to be improved, and the steam quality and energy utilization efficiency are not convenient to improve.

[0006] The technical scheme of the utility model discloses: a pulverized coal gasification gas pocket steam superheating treatment device, including gasification furnace, steam superheater, medium pressure gas pocket, steam pipe network, heating medium pump, heating medium pipeline, heating medium storage tank, heating medium heat exchanger, water supply pipeline, safety valve, outlet pipeline, connecting assembly, monitoring assembly and control assembly, one side of gasification furnace is provided with medium pressure gas pocket, the top of gasification furnace is provided with water supply pipeline, one end of water supply pipeline is arranged in the top of medium pressure gas pocket, the bottom of medium pressure gas pocket is provided with connecting assembly, and connecting assembly is provided with two groups, one end of connecting assembly is provided with steam superheater, and the lateral wall of steam superheater is provided with monitoring assembly, the bottom of steam superheater is provided with another connecting assembly, the bottom of another connecting assembly is provided with steam pipe network, one side of steam superheater is provided with outlet pipeline, and the lateral wall of outlet pipeline is provided with safety valve, one end of outlet pipeline is provided with heating medium heat exchanger, one side of heating medium heat exchanger is provided with heating medium pipeline, one end of heating medium pipeline is provided with heating medium pump, one side of heating medium pump is provided with heating medium storage tank, and the other side of gasification furnace is provided with control assembly.

[0007] Preferably, when the pulverized coal gasification device is in use, the device first converts the pulverized coal into gasification gas through the gasification furnace, and generates steam of a certain temperature and pressure, one side of the gasification furnace is provided with a medium pressure gas pocket for collecting and storing the initially generated steam, in order to improve the quality of the steam and meet the high temperature and high pressure requirements of the subsequent process, a steam superheater is provided, one end of the water supply pipeline is connected to the top of the medium pressure gas pocket to ensure that the steam superheater has sufficient water for heat exchange, the steam in the medium pressure gas pocket is sent into the steam superheater through the connecting assembly, and the steam is further heated in the steam superheater to reach the required superheating temperature, in order to monitor the working state of the steam superheater in real time, the monitoring assembly can feed back the collected data to the control assembly, once the temperature or pressure of the superheated steam exceeds the set value, the control assembly will start immediately, and emergency measures can be automatically taken to ensure the safe operation of the device, and the heating medium heat exchanger is used to recover the waste heat generated in the steam superheating process, improve the energy utilization efficiency, the heating medium flows through the heating medium heat exchanger for heat exchange under the drive of the heating medium pump, and then returns to the heating medium storage tank for storage standby, the device not only improves the quality of the steam and the energy utilization efficiency, but also ensures the safety and stability of the pulverized coal gasification process through the perfect monitoring and alarm system.

[0008] As preferred, the connecting assembly comprises a first pipe and a first valve, the lower side of the medium-pressure gas pocket is provided with the first pipe, the sidewall of the first pipe is provided with the first valve, and one end of the first pipe is arranged above the steam superheater.

[0009] As preferred, the connecting assembly further comprises a second pipe and a second valve, the lower side of the steam superheater is provided with the second pipe, the sidewall of the second pipe is provided with the second valve, and the second pipe is arranged above the steam pipe network.

[0010] As preferred, the monitoring assembly comprises a temperature sensor and a pressure sensor, the sidewall of the steam superheater is provided with the temperature sensor, and the sidewall of the steam superheater is provided with the pressure sensor.

[0011] As preferred, the control assembly comprises an electrical control cabinet and cabinet doors, the other side of the gasification furnace is provided with the electrical control cabinet, and both sides of the electrical control cabinet are provided with two groups of cabinet doors.

[0012] As preferred, the control assembly further comprises a controller, an over-temperature alarm device, and an over-pressure alarm device, the inside of the electrical control cabinet is provided with the controller, the inside of the electrical control cabinet is provided with the over-temperature alarm device, and the inside of the electrical control cabinet is provided with the over-pressure alarm device.

[0013] As preferred, the over-temperature alarm device is connected with the controller by wires, and the over-pressure alarm device is connected with the controller by wires.

[0014] The device has the advantages that:

[0015] When the pulverized coal gasification device is in use, the device first converts the pulverized coal into gasification gas through the gasification furnace and generates steam with a certain temperature and pressure, one side of the gasification furnace is provided with a medium-pressure gas pocket for collecting and storing the initially generated steam, in order to improve the quality of the steam and make it meet the high-temperature and high-pressure requirements of the subsequent process, a steam superheater is arranged, one end of a feedwater pipe is connected with the upper side of the medium-pressure gas pocket, so as to ensure that the steam superheater has sufficient feedwater for heat exchange, the steam in the medium-pressure gas pocket is sent into the steam superheater through the connecting assembly, the steam is further heated in the steam superheater to reach the required superheating temperature, in order to monitor the working state of the steam superheater in real time, the monitoring assembly can feed back the collected data to the control assembly, once the temperature or pressure of the superheated steam exceeds the set value, the control assembly will start immediately, and emergency measures can be automatically taken to ensure the safe operation of the device, the heating medium heat exchanger is used to recover the waste heat generated in the steam superheating process and improve the energy utilization efficiency, the heating medium flows through the heating medium heat exchanger for heat exchange under the driving of the heating medium pump, and then returns to the heating medium storage tank for storage, the device not only improves the quality of the steam and the energy utilization efficiency, but also ensures the safety and stability of the pulverized coal gasification process through the perfect monitoring and alarm system. Attached Figure Description

[0016] Figure 1 The diagram shown is a first three-dimensional structural schematic of a pulverized coal gasification steam superheating treatment device according to the present invention.

[0017] Figure 2 The diagram shown is a partial three-dimensional structural schematic of a pulverized coal gasification steam superheating treatment device of the present invention.

[0018] Figure 3 The diagram shown is a partial three-dimensional structural schematic of a pulverized coal gasification steam superheating treatment device of the present invention.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the third part of a pulverized coal gasification steam superheating treatment device of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Gasifier; 2. Steam superheater; 3. Medium-pressure steam tank; 4. Steam pipeline network; 5. Heating medium pump; 6. Heating medium pipeline; 7. Heating medium storage tank; 8. Heating medium heat exchanger; 9. Water supply pipeline; 10. Safety valve; 11. Outlet pipeline; 101. First pipeline; 102. First valve; 103. Second pipeline; 104. Second valve; 201. Temperature sensor; 202. Pressure sensor; 301. Electrical control cabinet; 302. Cabinet door; 303. Controller; 304. Over-temperature alarm device; 305. Over-pressure alarm device. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4The utility model provides an embodiment: a pulverized coal gasification gas pocket steam superheating treatment device, including gasification furnace 1, steam superheater 2, middle pressure gas pocket 3, steam pipe network 4, heating medium pump 5, heating medium pipeline 6, heating medium storage tank 7, heating medium heat exchanger 8, feedwater pipeline 9, safety valve 10, outlet pipeline 11, connecting assembly, monitoring assembly and control assembly, one side of gasification furnace 1 is provided with middle pressure gas pocket 3, and the upper of gasification furnace 1 is provided with feedwater pipeline 9, and one end of feedwater pipeline 9 is arranged in the upper of middle pressure gas pocket 3, and the lower of middle pressure gas pocket 3 is provided with connecting assembly, and the connecting assembly is provided with two groups, and one end of connecting assembly is provided with steam superheater 2, and the lateral wall of steam superheater 2 is provided with monitoring assembly, and the lower of steam superheater 2 is provided with another connecting assembly, and the lower of another connecting assembly is provided with steam pipe network 4, and one side of steam superheater 2 is provided with outlet pipeline 11, and the lateral wall of outlet pipeline 11 is provided with safety valve 10, and one end of outlet pipeline 11 is provided with heating medium heat exchanger 8, and one side of heating medium heat exchanger 8 is provided with heating medium pipeline 6, and one end of heating medium pipeline 6 is provided with heating medium pump 5, and one side of heating medium pump 5 is provided with heating medium storage tank 7, and the other side of gasification furnace 1 is provided with control assembly.

[0023] Please refer to Figure 2 Connecting assembly includes first pipeline 101 and first valve 102, and the lower of middle pressure gas pocket 3 is provided with first pipeline 101, and the lateral wall of first pipeline 101 is provided with first valve 102, and one end of first pipeline 101 is arranged in the upper of steam superheater 2, and first pipeline 101 can be opened and closed by first valve 102, and connecting assembly also includes second pipeline 103 and second valve 104, and the lower of steam superheater 2 is provided with second pipeline 103, and the lateral wall of second pipeline 103 is provided with second valve 104, and second pipeline 103 is arranged in the upper of steam pipe network 4, and second pipeline 103 can be opened and closed by second valve 104, and monitoring assembly includes temperature sensor 201 and pressure sensor 202, and the lateral wall of steam superheater 2 is provided with temperature sensor 201, and the lateral wall of steam superheater 2 is provided with pressure sensor 202, and temperature sensor 201 and pressure sensor 202 are installed on the lateral wall of steam superheater 2, and the temperature and pressure change of steam are monitored in real time, and these data are crucial for ensuring the accurate control and safety of steam superheating process.

[0024] Please refer to Figures 3-4The control components include an electrical control cabinet 301 and cabinet doors 302. The electrical control cabinet 301 is located on the other side of the gasifier 1. Two sets of cabinet doors 302 are located on both sides of the electrical control cabinet 301. These cabinet doors 302 facilitate routine inspections and troubleshooting by maintenance personnel, improving the maintainability and reliability of the equipment. The control components also include a controller 303, an over-temperature alarm device 304, and an over-pressure alarm device 305. The controller 303, over-temperature alarm device 304, and over-pressure alarm device 305 are all located inside the electrical control cabinet 301. Alarm device 305: Once the steam temperature or pressure exceeds the safety threshold, over-temperature alarm device 304 and over-pressure alarm device 305 will be activated immediately, issuing an alarm to the operator through audible and visual signals. At the same time, controller 303 will automatically trigger safety protection measures, such as closing the first valve 102 and the second valve 104, and opening the safety valve 10, to quickly reduce the system pressure and temperature and ensure the safety of equipment and personnel. Over-temperature alarm device 304 is connected to controller 303 by wire, and over-pressure alarm device 305 is connected to controller 303 by wire. Once the steam temperature or pressure exceeds the safety threshold, over-temperature alarm device 304 and over-pressure alarm device 305 will be activated immediately.

[0025] During the operation of the pulverized coal gasification unit, the gasifier 1 serves as the starting point, converting pulverized coal into syngas. This process involves the release of a large amount of heat. To effectively utilize this heat, a medium-pressure gas reservoir 3 is cleverly positioned on one side of the gasifier 1 to collect and store the high-temperature, high-pressure steam generated by the gasification reaction. The medium-pressure gas reservoir 3 not only helps stabilize the steam pressure but also provides the necessary steam source for the subsequent steam superheating process. A water supply pipe 9 introduces fresh water from above the medium-pressure gas reservoir 3 to replenish the water consumed by steam generation. Simultaneously, by precisely controlling the water supply, the pressure and temperature of the steam within the gas reservoir can be maintained within a preset range, ensuring the continuity and stability of the gasification process. The steam superheater 2, as a key component of this unit, is located at the end of the first pipe 101.

[0026] When steam from the medium-pressure steam drum 3 passes through the first pipe 101 and flows through the steam superheater 2, the steam is further heated to a higher temperature to meet the high-temperature steam requirements of subsequent processes. The first valve 102 installed on the first pipe 101 is used to control the steam flow rate so as to adjust the heating intensity of the steam superheater 2 according to actual needs.

[0027] Temperature sensors 201 and pressure sensors 202 are installed on the side wall of the steam superheater 2 to monitor changes in steam temperature and pressure in real time. This data is crucial for ensuring precise control and safety of the steam superheating process. To enhance the heat exchange efficiency of the steam superheater 2,

[0028] The device introduces a heating medium circulating system. The heating medium in the heating medium storage tank 7 flows into the heating medium heat exchanger 8 through the heating medium pipeline 6 under the drive of the heating medium pump 5, exchanges heat with the steam at the outlet of the steam superheater 2, preheats the steam entering the steam superheater 2, and improves the energy efficiency of the overall system,

[0029] The electrical control cabinet 301 is the core of the whole device, and the controller 303, the over-temperature alarm device 304 and the over-pressure alarm device 305 are integrated inside. The controller 303 receives data from the temperature sensor 201 and the pressure sensor 202, intelligently adjusts the steam superheating process according to a preset algorithm, and once the steam temperature or pressure exceeds the safety threshold, the over-temperature alarm device 304 and the over-pressure alarm device 305 will start immediately, and an alarm will be sent to the operator through an audible and visual signal, and at the same time the controller 303 automatically triggers the safety protection measures, such as closing the first valve 102 and the second valve 104 and opening the safety valve 10, to quickly reduce the system pressure and temperature, and ensure the safety of the equipment and personnel,

[0030] In addition, the cabinet doors 302 arranged on both sides of the electrical control cabinet 301 facilitate the daily inspection and troubleshooting of the control cabinet by maintenance personnel, and improve the maintainability and reliability of the equipment,

[0031] In summary, the steam superheating treatment process and the intelligent control system are carefully designed, the efficient superheating and safety control of the steam in the pulverized coal gasification process are realized, stable and high-quality steam resources are provided for the downstream process, and the safe and stable operation of the whole gasification system is ensured.

[0032] Through the above steps, when the pulverized coal gasification device is in use, the device first converts the pulverized coal into gasification gas through the gasification furnace 1, and generates steam with a certain temperature and pressure, one side of the gasification furnace 1 is provided with a medium-pressure gas pocket 3 for collecting and storing these initially generated steam, in order to improve the quality of the steam to meet the high temperature and high pressure requirements of the subsequent process, a steam superheater 2 is arranged, one end of the feedwater pipe 9 is connected with the upper side of the medium-pressure gas pocket 3, so as to ensure that the steam superheater 2 has enough feedwater for heat exchange, the steam in the medium-pressure gas pocket 3 is sent into the steam superheater 2 through the connecting assembly, and the steam is further heated in the steam superheater 2 to reach the required superheated temperature, in order to monitor the working state of the steam superheater 2 in real time, the collected data can be fed back to the control assembly through the monitoring assembly, and once the temperature or pressure of the superheated steam exceeds the set value, the control assembly will start immediately, and emergency measures can be automatically taken to ensure the safe operation of the device, and the heating medium heat exchanger 8 is used for recovering the waste heat generated in the steam superheating process, improving the energy utilization efficiency, and the heating medium flows through the heating medium heat exchanger 8 for heat exchange under the driving of the heating medium pump 5 through the heating medium pipe 6, and then returns to the heating medium storage tank 7 for storage for standby, the device not only improves the quality of the steam and the energy utilization efficiency, but also ensures the safety and stability of the pulverized coal gasification process through the perfect monitoring and alarm system.

[0033] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A steam superheating device for pulverized coal gasification drum, comprising a gasifier (1), characterized in that: It also includes a steam superheater (2), a medium-pressure gas tank (3), a steam pipeline network (4), a heating medium pump (5), a heating medium pipeline (6), a heating medium storage tank (7), a heating medium heat exchanger (8), a water supply pipeline (9), a safety valve (10), an outlet pipeline (11), a connecting assembly, a monitoring assembly, and a control assembly. A medium-pressure gas tank (3) is provided on one side of the gasifier (1), and a water supply pipeline (9) is provided above the gasifier (1). One end of the water supply pipeline (9) is located above the medium-pressure gas tank (3). A connecting assembly is provided below the medium-pressure gas tank (3). Two sets of connecting assemblies are provided. A steam superheater (2) is provided at one end of the connecting assembly. A monitoring component is provided on the side wall of the superheater (2). Another connecting component is provided below the steam superheater (2). A steam network (4) is provided below the other connecting component. An outlet pipe (11) is provided on one side of the steam superheater (2). A safety valve (10) is provided on the side wall of the outlet pipe (11). A heating medium heat exchanger (8) is provided at one end of the outlet pipe (11). A heating medium pipe (6) is provided on one side of the heating medium heat exchanger (8). A heating medium pump (5) is provided at one end of the heating medium pipe (6). A heating medium storage tank (7) is provided on one side of the heating medium pump (5). A control component is provided on the other side of the gasifier (1).

2. The steam superheating device for pulverized coal gasification drum according to claim 1, characterized in that: The connecting assembly includes a first pipe (101) and a first valve (102). The first pipe (101) is located below the medium-pressure gas tank (3), and the first valve (102) is located on the side wall of the first pipe (101). One end of the first pipe (101) is located above the steam superheater (2).

3. The steam superheating treatment device for pulverized coal gasification drum according to claim 1, characterized in that: The connecting assembly also includes a second pipe (103) and a second valve (104). The second pipe (103) is located below the steam superheater (2), and the second valve (104) is located on the side wall of the second pipe (103). The second pipe (103) is located above the steam network (4).

4. The steam superheating device for pulverized coal gasification drum according to claim 1, characterized in that: The monitoring components include a temperature sensor (201) and a pressure sensor (202). The temperature sensor (201) is installed on the side wall of the steam superheater (2), and the pressure sensor (202) is installed on the side wall of the steam superheater (2).

5. The steam superheating device for pulverized coal gasification drum according to claim 1, characterized in that: The control components include an electrical control cabinet (301) and cabinet doors (302). An electrical control cabinet (301) is provided on the other side of the gasifier (1), and two sets of cabinet doors (302) are provided on both sides of the electrical control cabinet (301).

6. The steam superheating device for pulverized coal gasification drum according to claim 5, characterized in that: The control components also include a controller (303), an over-temperature alarm device (304), and an over-pressure alarm device (305). The controller (303) is installed inside the electrical control cabinet (301), the over-temperature alarm device (304) is installed inside the electrical control cabinet (301), and the over-pressure alarm device (305) is installed inside the electrical control cabinet (301).

7. The steam superheating device for pulverized coal gasification drum according to claim 6, characterized in that: The over-temperature alarm device (304) is connected to the controller (303) by wire, and the over-pressure alarm device (305) is connected to the controller (303) by wire.

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