Automatic diffusion ignition control system of two-section gas producer

Abstract

The utility model relates to an automatic diffusion ignition control system of a two-section gas producer, which belongs to the technical field of gas industry automation, and comprises a stock bin, a furnace body, a tar capture device and an evaporation heat exchange device, a coaling control system is arranged between the stock bin and the furnace body, the coaling control system is electrically connected with a distributed control system, and the distributed control system is electrically connected with the evaporation heat exchange device. A water supplementing device is installed at the end, away from the stock bin, of the furnace body, and a waste treatment system is arranged below the water supplementing device. The furnace body is connected with the tar capturing device through an upper-section pipeline, and a first diffusion ignition system is mounted on the upper-section pipeline; the furnace body is connected with the evaporation heat exchange device through a lower-section pipeline, and a second diffusion ignition system is mounted on the lower-section pipeline; the waste treatment system, the first diffusion ignition system and the second diffusion ignition system are all electrically connected with the distributed control system. The device has the effect of safely and conveniently carrying out diffusion ignition operation.

Description

Technical Field

[0001] This application relates to the field of gas industry automation, and in particular to an automatic venting and ignition control system for a two-stage gas generator. Background Technology

[0002] Two-stage gasifiers, also known as two-stage gasifiers, are a type of high-efficiency coal gasification equipment. They are widely used in rural power generation, industrial production, large institutions, and many other fields.

[0003] Currently, the two gas generators are mainly operated manually for venting and ignition. However, due to the high concentration of gas, manual venting and ignition poses a significant risk of carbon monoxide poisoning to on-site personnel. Furthermore, manual venting and ignition requires personnel to perform venting and ignition operations on top of their regular duties, increasing their workload and reducing the efficiency of routine work. Utility Model Content

[0004] To ensure safe and convenient venting and ignition operations, this application provides an automatic venting and ignition control system for a two-stage gasifier.

[0005] The automatic venting and ignition control system for a two-stage gasifier provided in this application adopts the following technical solution:

[0006] An automatic venting and ignition control system for a two-stage gasifier includes a silo, a furnace body, a tar capture device, and an evaporation heat exchange device. It also includes a coal feeding control system installed between the silo and the furnace body. The coal feeding control system is electrically connected to a distributed control system. A water supply device is installed at the end of the furnace body away from the silo. A waste treatment system is installed below the water supply device.

[0007] The furnace body is connected to the tar capture device via an upper pipe, and a first venting ignition system is installed on the upper pipe.

[0008] The furnace body is connected to the evaporation heat exchange device through a lower section pipe, and a second venting ignition system is installed on the lower section pipe;

[0009] The waste treatment system, the first venting ignition system, and the second venting ignition system are all electrically connected to the distributed control system.

[0010] By adopting the above technical solution, a coal feeding control system, a waste treatment system, a first venting ignition system, and a second venting ignition system, all controllable through a distributed control system, are set up. Based on the detection results of the above systems, the staff can remotely control the venting ignition of the two gasifiers through the distributed control system, without the need for on-site surveys. At the same time, the detection results of the system can provide relatively accurate data without the need for manual judgment, enabling the staff to quickly determine the operation content of venting ignition and remotely operate other tasks other than venting ignition, so that the work can be carried out simultaneously without negatively impacting the venting ignition operation, thus enabling safe and convenient venting ignition operation.

[0011] Optionally, the coal feeding control system includes an electric discharge valve installed at the discharge port of the silo. Below the electric discharge valve, there are two electric hopper doors that divide the electric discharge valve in half. The side of each of the two electric hopper doors away from the silo is connected to a small silo. The side of each small silo closer to the furnace body is connected to an electric hopper door identical to the one above. The electric discharge valve and the four electric hopper doors are all electrically connected to the distributed control system.

[0012] By adopting the above technical solution, the electric discharge valve and the electric bin door connected to the electric discharge valve are opened according to actual needs, so that the coal blocks in the hopper fall into the corresponding small hopper. When feeding is required, the electric bin door below the corresponding small hopper is opened to let the coal blocks fall into the furnace body. This ensures that there are always coal blocks in the small hopper, preventing gas leakage caused by empty bins or valve leakage, and improving the safety of the two-stage gasifier.

[0013] Optionally, the first venting ignition system includes a first ignition transformer, a first venting electric valve, and a first temperature sensor for detecting gas temperature. A first mounting pipe is connected to the upper section of the pipeline. The first ignition transformer is installed at the end of the first mounting pipe away from the upper section of the pipeline, and the first venting electric valve is installed on the first mounting pipe.

[0014] By adopting the above technical solution, the first temperature sensor detects the gas temperature near the upper section of the pipeline. When the temperature reaches the corresponding temperature threshold, the staff controls the first ignition transformer and the first venting electric valve to vent and ignite through the distributed control system. This allows for control without the need for manual intervention on-site, improving the convenience and safety of operation.

[0015] Optionally, the second venting ignition system includes a second ignition transformer, a second venting electric valve, and a second temperature sensor for detecting gas temperature. A second mounting pipe is connected to the lower section of the pipeline. The second ignition transformer is installed at the end of the second mounting pipe away from the upper section of the pipeline, and the second venting electric valve is installed on the second mounting pipe.

[0016] By adopting the above technical solution, the second temperature sensor detects the gas temperature near the lower pipeline section. When the temperature reaches the corresponding temperature threshold, the staff controls the second ignition transformer and the second venting electric valve to vent and ignite through the distributed control system. This allows for control without the need for manual intervention on-site, further improving the convenience and safety of operation.

[0017] Optionally, the water replenishment device includes an upper jacket and a lower jacket. The upper jacket is wrapped around the outer surface of the furnace body, and the lower jacket is wrapped around the inner surface of the furnace body. Both the upper jacket and the lower jacket are located at one end of the furnace body near the ground.

[0018] By adopting the above technical solution, water is injected into the upper and lower jackets, and the furnace body is replenished with water through the upper and lower jackets, which can keep the furnace body moist and reduce the possibility of the furnace body drying and cracking due to high temperature.

[0019] Optionally, the waste treatment system includes a waste collection box, a waste discharge pipe, and a gravity sensor for measuring the weight of the waste collection box. The waste collection box is located below the end of the furnace body near the ground, with the bottom of the waste collection box abutting against the ground. The waste discharge pipe is connected to the waste collection box.

[0020] By adopting the above technical solution, the waste material after combustion in the furnace body falls directly into the waste collection box. The gravity sensor detects the weight of the waste collection box. When the weight threshold is reached, the staff controls the waste discharge pipe to discharge the waste material from the waste collection box. This allows for prepared collective cleaning when cleaning is needed, improving the convenience of use.

[0021] Optionally, it also includes a dust removal and slag discharge system, which includes a cyclone dust collector and a slag discharge electric valve. The cyclone dust collector is installed at the end of the lower section of the pipeline away from the furnace body, and both the cyclone dust collector and the slag discharge electric valve are electrically connected to the distributed control system.

[0022] By adopting the above technical solution, the cyclone dust collector removes dust from the coal gas transported by the lower pipe and filters out the residue mixed in the coal gas. The staff controls the slag discharge electric valve to open according to the actual storage situation, so as to discharge the residue in the cyclone dust collector, which improves the convenience of use.

[0023] Optionally, a storage container for storing dust and waste is provided below the dust removal and slag discharge system.

[0024] By adopting the above technical solution, the discharged residue falls into the storage container, and the residue is collected, making it convenient for staff to clean and dispose of the residue in a centralized manner.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The system is equipped with a coal feeding control system, a waste treatment system, a first venting ignition system, and a second venting ignition system, all controllable through a distributed control system. Based on the detection results of these systems, staff can remotely control the venting ignition of the two gasifiers via the distributed control system, eliminating the need for on-site surveys. Furthermore, the system's detection results provide relatively accurate data that does not require manual judgment, allowing staff to quickly determine the venting ignition operation and remotely operate other tasks besides venting ignition. This ensures that all tasks can be performed simultaneously without negatively impacting the venting ignition operation, thus enabling safe and convenient venting ignition procedures.

[0027] 2. The first temperature sensor detects the gas temperature near the upper section of the pipeline. When the temperature reaches the corresponding temperature threshold, the staff controls the first ignition transformer and the first venting electric valve to vent and ignite through the distributed control system. This can be done without human intervention on site, improving the convenience and safety of operation.

[0028] 3. The second temperature sensor detects the gas temperature near the lower section of the pipeline. When the temperature reaches the corresponding temperature threshold, the staff controls the second ignition transformer and the second venting electric valve to vent and ignite the gas through the distributed control system. This allows for control without the need for manual intervention on-site, further improving the convenience and safety of operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram illustrating the structure of the automatic venting and ignition control system for a two-stage gasifier in the embodiments of this application.

[0030] Figure 2 This is a schematic diagram illustrating the framework of the distributed control system in the embodiments of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Hopper; 2. Furnace body; 3. Coal feeding system; 31. Electric discharge valve; 32. Electric hopper door; 33. Small hopper; 4. First venting ignition system; 41. First ignition transformer; 42. First venting electric valve; 43. First temperature sensor; 5. Second venting ignition system; 51. Second ignition transformer; 52. Second venting electric valve; 53. Second temperature sensor; 6. Water supply device; 61. Upper jacket; 62. Lower jacket; 7. Waste treatment system; 71. Waste collection box; 72. Waste discharge pipe; 73. Gravity sensor; 8. Dust removal and slag discharge system; 81. Cyclone dust collector; 82. Slag discharge electric valve; 83. Storage container; 9. Distributed control system. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0033] This application discloses an automatic venting and ignition control system for a two-stage gasifier. (Refer to...) Figure 1 and Figure 2 The two-stage gasifier automatic venting and ignition control system includes a basic silo 1, furnace body 2, tar capture device, and evaporation heat exchange device. On this basis, a coal feeding control system, a waste treatment system 7, a first venting and ignition system 4, and a second venting and ignition system 5 are added, and a distributed control system 9 is set up. The coal feeding control system, waste treatment system 7, first venting and ignition system 4, and second venting and ignition system 5 are all electrically connected to the distributed control system 9. The staff can remotely control the coal feeding control system, waste treatment system 7, first venting and ignition system 4, and second venting and ignition system 5 through the distributed control system 9.

[0034] Reference Figure 1A coal feeding control system is installed between silo 1 and furnace body 2. This system includes an electric discharge valve 31, four electric silo doors 32, and two small silos 33. The electric discharge valve 31 and the four electric silo doors 32 are electrically connected to the distributed control system 9. For ease of description, the four electric silo doors 32 are named the upper left silo door, lower left silo door, upper right silo door, and lower right silo door, respectively. The two small silos 33 are named left silo 1 and right silo 1, respectively. The electric discharge valve 31 is installed at the bottom of silo 1. When the electric discharge valve 31 opens, coal chunks fall from silo 1. The upper left and upper right silo doors are positioned below the electric discharge valve 31, dividing its outlet evenly. The upper left and upper right silo doors can be directly positioned below the electric discharge valve 31, or they can be installed below the electric discharge valve 31 door via a buffer pipe. Left silo 1 and right silo 1... The upper left and upper right hopper doors are respectively installed at the bottom of the upper left and upper right hopper doors, while the lower left and lower right hopper doors are respectively installed at the bottom of the left and right hoppers 1. During operation, the electric discharge valve 31 and the upper left hopper door are opened by the distributed control system 9, while the other electric hopper doors 32 are closed. Coal blocks enter the left hopper 1. Then, the electric discharge valve 31 and the upper left hopper door are closed, and the lower left hopper door is opened, allowing the coal blocks in the left hopper 1 to fall into the furnace body 2. Finally, the lower left hopper door is closed, and the coal blocks are processed in a cycle to always keep coal blocks in the small hopper 33, thereby preventing gas leakage caused by empty hoppers or valve leakage. It should be noted that the right side adopts the same processing method as the left side. The upper left and upper right hopper doors can be opened at the same time, but it is forbidden to open and close the upper right and lower right hopper doors at the same time as the upper left and lower left hopper doors, as simultaneous opening and closing can easily lead to gas leakage and cause production hazards.

[0035] Reference Figure 1 and Figure 2The system is equipped with two venting ignition systems: a first venting ignition system 4 located on the upper section of the pipeline and a second venting ignition system 5 located on the lower section of the pipeline. Both systems are electrically connected to a distributed control system 9. The furnace body 2 is connected to a tar capture device via the upper section of the pipeline and to an evaporation heat exchange device via the lower section of the pipeline. The first venting ignition system 4 and the second venting ignition system 5 have the same components and operate on the same principle, both used for automatic venting ignition under the control of the distributed control system 9. During operation, abnormal pressure may easily occur in the pipeline. If the temperature of the vented coal is too high, it may affect the safety of the entire gas system. The distributed control system 9 is equipped with pressure and temperature thresholds. When the system pressure value received by the distributed control system 9 is greater than the pressure threshold and the ambient temperature value is greater than the temperature threshold, the distributed control system 9 controls the first venting ignition system 4 and / or the second venting ignition system 5 to automatically vent and ignite, thereby enabling automatic venting ignition in the event of high coal gas temperature and abnormal gas system pressure, thus reducing the danger posed by the external environment to the personnel.

[0036] The first flare ignition system 4 includes a first ignition transformer 41, a first flare electric valve 42, and a first temperature sensor 43 for detecting gas temperature. A first mounting pipe is connected to the upper section of the pipeline. The first ignition transformer 41 is installed at the end of the first mounting pipe away from the upper section of the pipeline, and the first flare electric valve 42 is installed on the first mounting pipe. During operation, the first ignition transformer 41 is controlled to ignite and the first flare electric valve 42 is controlled to open. Similarly, the second flare ignition system 5 includes a second ignition transformer 51, a second flare electric valve 52, and a second temperature sensor 53 for detecting gas temperature. A second mounting pipe is connected to the lower section of the pipeline. The second ignition transformer 51 is installed at the end of the second mounting pipe away from the upper section of the pipeline, and the second flare electric valve 52 is installed on the second mounting pipe. During operation, the second ignition transformer 51 is controlled to ignite and the second flare electric valve 52 is controlled to open.

[0037] Reference Figure 1 A water supply device 6 is installed at the end of the furnace body 2 away from the hopper 1. A waste treatment system 7 is set below the water supply device 6. The water supply device 6 includes an upper jacket 61 surrounding the outer surface of the furnace body 2 and a lower jacket 62 surrounding the inner surface of the furnace body 2. Both the upper jacket 61 and the lower jacket 62 are located at the end of the furnace body 2 near the ground. There are gaps between the upper jacket 61 and the lower jacket 62 and the furnace body 2 for water injection. The furnace body 2 is kept moist by injecting water into the gaps.

[0038] Reference Figure 1 and Figure 2The waste treatment system 7 includes a waste collection box 71, a waste discharge pipe 72, and a gravity sensor 73. The waste collection box 71 is located below the end of the furnace body 2 near the ground, with its bottom abutting the ground. The waste discharge pipe 72 is connected to the waste collection box 71. The gravity sensor 73 measures the weight of the waste collection box 71. A discharge valve is added to the waste discharge pipe 72. The gravity sensor 73 and the discharge valve are electrically connected to the distributed control system 9. The gravity sensor 73 sends the detected weight to the distributed control system 9. When the set weight threshold is reached, the distributed control system 9 controls the discharge valve to open, allowing the waste generated in the furnace body 2 and falling into the waste collection box 71 to be discharged through the waste discharge pipe 72. This facilitates centralized waste treatment. Since the waste generates a large amount of dust when it falls, affecting the surrounding working environment, discharging all waste would result in a long-term dusty working environment. Centralized treatment avoids this problem.

[0039] Reference Figure 1 and Figure 2 The two-stage gasifier automatic venting and ignition control system also includes a dust removal and ash removal system 8. The dust removal and ash removal system 8 includes a cyclone dust collector 81 and an electric ash removal valve 82. The cyclone dust collector 81 is installed at the end of the lower pipeline away from the furnace body 2. Both the cyclone dust collector 81 and the electric ash removal valve 82 are electrically connected to the distributed control system 9. The cyclone dust collector 81 is used to collect suspended dust. After the collected dust reaches a certain weight, the distributed control system 9 controls the electric ash removal valve 82 to open, and the dust in the cyclone dust collector 81 falls into the storage container 83 for easy disposal by the staff.

[0040] The implementation principle of the automatic venting and ignition control system for a two-stage gasifier in this application embodiment is as follows: Coal blocks enter the silo 1. The distributed control system 9 controls the electric discharge valve 31, the upper left silo door, and the upper right silo door to open, allowing the coal blocks to enter the left silo 1 and the right silo 1. According to the feeding requirements, the operator controls the lower left silo door or the lower right silo door to open through the distributed control system 9, allowing the coal blocks to enter the furnace body 2 for combustion. Water in the upper jacket 61 and the lower jacket 62 keeps the furnace body 2 moist. The waste generated during combustion falls into the waste treatment system 7 for waste treatment. The generated gas and tar enter the tar capture device and the evaporation heat exchange device for treatment through the upper section pipe and the lower section pipe, respectively. The first venting and ignition system 4 and the second venting and ignition system 5 automatically vent and ignite according to the ambient temperature. The dust removal and slag removal system 8 automatically removes dust from the smoke and dust generated during combustion.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic venting and ignition control system for a two-stage gasifier, comprising a hopper (1), a furnace body (2), a tar capture device, and an evaporation heat exchange device, characterized in that: A coal feeding control system is installed between the silo (1) and the furnace body (2). The coal feeding control system is electrically connected to a distributed control system (9). A water supply device (6) is installed at the end of the furnace body (2) away from the silo (1). A waste treatment system (7) is provided below the water supply device (6). The furnace body (2) is connected to the tar capture device through an upper pipe, and a first venting ignition system (4) is installed on the upper pipe; The furnace body (2) is connected to the evaporation heat exchange device through a lower section pipe, and a second venting ignition system (5) is installed on the lower section pipe; The waste treatment system (7), the first venting ignition system (4), and the second venting ignition system (5) are all electrically connected to the distributed control system (9).

2. The automatic venting and ignition control system for a two-stage gasifier according to claim 1, characterized in that: The coal feeding control system includes an electric discharge valve (31) installed at the discharge port of the silo (1). Below the electric discharge valve (31) are two electric hopper doors (32) that divide the electric discharge valve (31) equally. The two electric hopper doors (32) are connected to small hoppers (33) on the side away from the silo (1). The side of the small hoppers (33) that is close to the furnace body (2) is connected to electric hopper doors (32) that are the same as the upper electric hopper doors (32). The electric discharge valve (31) and the four electric hopper doors (32) are all electrically connected to the distributed control system (9).

3. The automatic venting and ignition control system for a two-stage gasifier according to claim 1, characterized in that: The first venting ignition system (4) includes a first ignition transformer (41), a first venting electric valve (42), and a first temperature sensor (43) for detecting gas temperature. A first mounting pipe is connected to the upper section of the pipeline. The first ignition transformer (41) is installed at the end of the first mounting pipe away from the upper section of the pipeline, and the first venting electric valve (42) is installed on the first mounting pipe.

4. The automatic venting and ignition control system for a two-stage gasifier according to claim 1, characterized in that: The second venting ignition system (5) includes a second ignition transformer (51), a second venting electric valve (52), and a second temperature sensor (53) for detecting gas temperature. A second mounting pipe is connected to the lower section of the pipeline. The second ignition transformer (51) is installed at the end of the second mounting pipe away from the upper section of the pipeline, and the second venting electric valve (52) is installed on the second mounting pipe.

5. The automatic venting and ignition control system for a two-stage gasifier according to claim 1, characterized in that: The water replenishment device (6) includes an upper jacket (61) and a lower jacket (62). The upper jacket (61) is sleeved around the outer surface of the furnace body (2), and the lower jacket (62) is sleeved around the inner surface of the furnace body (2). Both the upper jacket (61) and the lower jacket (62) are located at one end of the furnace body (2) near the ground.

6. The automatic venting and ignition control system for a two-stage gasifier according to claim 1, characterized in that: The waste treatment system (7) includes a waste collection box (71), a waste discharge pipe (72), and a gravity sensor (73) for measuring the weight of the waste collection box (71). The waste collection box (71) is located below the furnace body (2) near the ground. The bottom of the waste collection box (71) is in contact with the ground. The waste discharge pipe (72) is connected to the waste collection box (71).

7. The automatic venting and ignition control system for a two-stage gasifier according to claim 1, characterized in that: It also includes a dust removal and slag discharge system (8), which includes a cyclone dust collector (81) and a slag discharge electric valve (82). The cyclone dust collector (81) is installed at the end of the lower section pipe away from the furnace body (2). Both the cyclone dust collector (81) and the slag discharge electric valve (82) are electrically connected to the distributed control system (9).

8. The automatic venting and ignition control system for a two-stage gasifier according to claim 7, characterized in that: The dust removal and slag discharge system (8) is equipped with a storage container (83) for storing dust and waste.

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