Feeding control device of gasification furnace

Abstract

The utility model relates to the technical field of coal gasification, and discloses a gasification furnace feeding control device which comprises a raw material gas conveying pipeline, and the raw material gas conveying pipeline is provided with a raw material gas flow element and a first control element; the pulverized coal conveying pipeline is provided with a pulverized coal flow element and a second control element; the feed gas flow element, the first control element, the pulverized coal flow element and the second control element are electrically connected with the controller respectively. The feeding control device of the gasification furnace can adjust the feed gas supply quantity of the feed gas conveying pipeline and the pulverized coal supply quantity of the pulverized coal conveying pipeline in an interlocking manner according to the gas consumption of a post-production system, so that the gas supply quantity of the gasification furnace is reduced under the condition that the gas supply quality is not changed, and resource waste caused by excessive gas production of the gasification furnace is avoided; the production cost of an enterprise is increased, and excessive gas is prevented from diffusing to pollute the environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal gasification, specifically to a gasification furnace feeding control device. BACKGROUND

[0002] Coal gasification refers to a process of converting solid coal into ash and combustible gas under a certain temperature and pressure in a specific device through a series of chemical reactions between organic matter in coal and raw material gas. According to the difference of raw material gas (air, pure oxygen, oxygen-enriched air, water vapor, etc.) and gasification process, various coal gas with different components can be produced, which can be used for producing industrial fuel gas, domestic coal gas and chemical raw material gas (synthesis gas) through further purification and shift reaction. Coal gasification is an important part of coal conversion technology research. Coal gasification is not only an important outlet for China's future energy industry, but also an important way to reduce air pollution.

[0003] Now, gasification furnaces are commonly used as reaction equipment for coal gasification reaction to process coal. In the prior art, a manual valve or a regulating valve is installed on the raw material gas conveying pipeline of the gasification furnace, which cannot be interlocked with the pulverized coal conveying equipment on the pulverized coal conveying pipeline. When the gas consumption of the subsequent production system decreases and meets the adjustment condition, joint adjustment control cannot be performed, and the supply of raw material gas and pulverized coal cannot be reduced in coordination to reduce the gas supply of the gasification furnace. In the case where the gas consumption of the subsequent production system decreases and the gas supply of the gasification furnace does not decrease, only the excess coal gas can be dispersed, which not only causes environmental pollution but also increases the production cost of the enterprise. SUMMARY

[0004] To overcome the problems in the related art, the utility model provides a gasification furnace feeding control device, which can interlock and adjust the supply of raw material gas and pulverized coal according to the gas consumption of the subsequent production system, coordinate the proportion between them, and reduce the gas supply of the gasification furnace without affecting the gas supply quality of the gasification furnace.

[0005] The utility model adopts the technical scheme that a gasification furnace feeding control device comprises

[0006] A raw material gas conveying pipeline is in communication with the gas inlet of the gasification furnace, and the raw material gas conveying pipeline is provided with a raw material gas flow element and a first control element;

[0007] A pulverized coal conveying pipeline is in communication with the feeding inlet of the gasification furnace, and the pulverized coal conveying pipeline is provided with a pulverized coal flow element and a second control element;

[0008] and a controller, wherein the raw material gas flow element, the first control element, the pulverized coal flow element and the second control element are electrically connected to the controller.

[0009] Further, the gasifier comprises a primary gas inlet and a secondary gas inlet, the raw material gas conveying pipeline comprises a primary raw material gas conveying pipeline, a secondary raw material gas conveying pipeline, a steam conveying pipeline and a combustion-supporting gas conveying pipeline, and the steam conveying pipeline comprises a first steam conveying bypass and a second steam conveying bypass;

[0010] One end of the primary raw material gas conveying pipeline is in communication with the first steam conveying bypass and the combustion-supporting gas conveying pipeline respectively, the other end of the primary raw material gas conveying pipeline is in communication with the primary gas inlet, one end of the secondary raw material gas conveying pipeline is in communication with the second steam conveying bypass and the combustion-supporting gas conveying pipeline respectively, and the other end of the secondary raw material gas conveying pipeline is in communication with the secondary gas inlet.

[0011] Further, the raw material gas flow element comprises a first electromagnetic flowmeter, a second electromagnetic flowmeter, a steam flowmeter and a combustion-supporting gas flowmeter, and the first control element comprises a first electromagnetic valve, a second electromagnetic valve, a steam control valve and a combustion-supporting gas control valve.

[0012] The first electromagnetic flowmeter and the first electromagnetic valve are arranged in the primary raw material gas conveying pipeline, the second electromagnetic flowmeter and the second electromagnetic valve are arranged in the secondary raw material gas conveying pipeline, the steam flowmeter and the steam control valve are arranged in the steam conveying pipeline, and the combustion-supporting gas flowmeter and the combustion-supporting gas control valve are arranged in the combustion-supporting gas conveying pipeline.

[0013] Further, the primary raw material gas conveying pipeline is sequentially provided with a first mixer, a first electromagnetic flowmeter, a first electromagnetic valve and a first check valve, the first check valve is in communication with the primary gas inlet, and the first mixer is in communication with the first steam conveying bypass and the combustion-supporting gas conveying pipeline respectively.

[0014] The secondary raw material gas conveying pipeline is sequentially provided with a second mixer, a second electromagnetic flowmeter, a second electromagnetic valve and a second check valve, the second check valve is in communication with the secondary gas inlet, and the second mixer is in communication with the second steam conveying bypass and the combustion-supporting gas conveying pipeline respectively.

[0015] Further, the combustion-supporting gas conveying pipeline comprises an oxygen gas conveying pipeline and an air conveying pipeline, the combustion-supporting gas flowmeter comprises a first oxygen gas flowmeter and a first air flowmeter, the combustion-supporting gas control valve comprises a first oxygen gas electromagnetic valve and a first air electromagnetic valve, the oxygen gas conveying pipeline sequentially comprises an air separation system oxygen gas outlet, a first oxygen gas flowmeter, a first oxygen gas electromagnetic valve and a preheater, the air conveying pipeline sequentially comprises a blower, a diffusion valve, a pressure relief valve, a first air flowmeter and a first air electromagnetic valve, the air conveying pipeline is in communication with the preheater, and the preheater is in communication with the first mixer and the second mixer respectively through pipelines.

[0016] Further, the steam delivery pipeline further comprises a third steam delivery bypass, the steam flow meter comprises a first steam flow meter, a second steam flow meter and a third steam flow meter, the steam control valve comprises a first steam solenoid valve, a second steam solenoid valve and a third steam solenoid valve, the first steam delivery bypass is sequentially provided with the first steam solenoid valve and the first steam flow meter, the second steam delivery bypass is sequentially provided with the second steam solenoid valve and the second steam flow meter, the third steam delivery bypass is sequentially provided with the third steam solenoid valve and the third steam flow meter, and the third steam delivery bypass is communicated with the preheater.

[0017] Further, the pulverized coal delivery pipeline comprises a nitrogen gas delivery bypass and a dry pulverized coal delivery bypass, the dry pulverized coal delivery bypass is sequentially provided with an atmospheric pressure coal bin, a pulverized coal metering hopper, a pressure change coal hopper, a high-pressure coal hopper and a screw conveyor, the nitrogen gas delivery bypass comprises a nitrogen gas pressurization bypass and a nitrogen gas blowing bypass, the nitrogen gas pressurization bypass is communicated with the pressure change coal hopper, a discharge port of the screw conveyor is communicated with the nitrogen gas blowing bypass, and the nitrogen gas blowing bypass is communicated with the gasifier feed inlet.

[0018] Further, the pulverized coal flow element comprises a level meter, and the level meter is arranged in the pulverized coal metering hopper.

[0019] Further, the second control element comprises a feeder and the screw conveyor, an inlet of the feeder is communicated with a discharge port of the high-pressure coal hopper, and an outlet of the feeder is communicated with a feed inlet of the screw conveyor.

[0020] Further, the controller is a PLC controller, the raw material gas flow element and the pulverized coal flow element are communicated with input ports of the PLC controller, and the first control element and the second control element are communicated with output ports of the PLC controller.

[0021] The gasifier feed control device has the following technical effects: the raw material gas flow element and the first control element are arranged on the raw material gas delivery pipeline, and the pulverized coal flow element and the second control element are arranged on the pulverized coal delivery pipeline, and the raw material gas flow element, the first control element, the pulverized coal flow element and the second control element are electrically connected with the controller. In this way, when the coal gas consumption of the subsequent production system decreases, the controller can adjust the raw material gas supply amount of the raw material gas delivery pipeline by means of the first control element and adjust the pulverized coal supply amount of the pulverized coal delivery pipeline by means of the second control element according to the flow feedback of the raw material gas flow element on the raw material gas delivery pipeline and the flow feedback of the pulverized coal flow element on the pulverized coal delivery pipeline, so that the proportion of the two entering the gasifier is kept coordinated, the gasification furnace gas supply quality is guaranteed, and the gasification furnace gas supply amount is reduced. The gasifier feed control device can avoid excessive gasification furnace coal gas production, cause resource waste and increase enterprise production cost, and also avoid excessive coal gas diffusion, which causes environmental pollution.

[0022] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and serve to explain the principles of the present disclosure, but are not intended to limit the present disclosure. In the drawings:

[0024] Fig. 1 It is a kind of gasification furnace feed control device overall block diagram (I) according to an exemplary embodiment.

[0025] Fig. 2 It is a kind of gasification furnace feed control device overall block diagram (II) according to an exemplary embodiment.

[0026] Fig. 3 It is a kind of gasification furnace feed control device overall structure schematic view according to an exemplary embodiment.

[0027] Reference numerals: 10, gasifier feed control device; 11, raw material gas delivery pipeline; 111, raw material gas flow element; 1111, first electromagnetic flowmeter; 1112, second electromagnetic flowmeter; 1113, steam flowmeter; 11131, first steam flowmeter; 11132, second steam flowmeter; 11133, third steam flowmeter; 1114, combustion-supporting gas flowmeter; 11141, first oxygen flowmeter; 11142, first air flowmeter; 112, first control element; 1121, first electromagnetic valve; 1122, second electromagnetic valve; 1123, steam control valve; 11231, first steam electromagnetic valve; 11232, second steam electromagnetic valve; 11233, third steam electromagnetic valve; 1124, combustion-supporting gas control valve; 11241, first oxygen electromagnetic valve; 11242, first air electromagnetic valve; 113, primary raw material gas delivery pipeline; 1131, first mixer; 1132, first check valve; 114, secondary raw material gas delivery pipeline; 1141, second mixer; 1142, second check valve; 115, steam delivery pipeline; 1151, first steam delivery bypass; 1152, second steam delivery bypass; 1153, third steam delivery bypass; 116, combustion-supporting gas delivery pipeline; 1161, oxygen delivery pipeline; 11611, air separation system; 11612, preheater; 1162, air delivery pipeline; 11621, bleeder valve; 11622, explosion vent valve; 11623, blower; 12, pulverized coal delivery pipeline; 121, pulverized coal flow element; 1211, level gauge; 122, second control element; 1221, screw conveyor; 1222, feeder; 123, nitrogen delivery bypass; 1231, nitrogen pressurization bypass; 1232, nitrogen blowing bypass; 124, dry pulverized coal delivery bypass; 1241, normal-pressure coal bin; 1242, pulverized coal measuring hopper; 1243, pressure-changing coal hopper; 1244, high-pressure coal hopper; 13, controller; 131, PLC controller; 14, gasifier; 141, primary gas inlet; 142, gasifier feed inlet; 143, secondary gas inlet. DETAILED DESCRIPTION

[0028] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0029] As Figs. 1-3The utility model discloses a gasification furnace feed control device 10, including raw material gas delivery pipeline 11, pulverized coal delivery pipeline 12 and controller 13, raw material gas delivery pipeline 11 communicates with gasification furnace 14 gas inlet, and raw material gas delivery pipeline 11 is equipped with raw material gas flow element 111 and first control element 112, pulverized coal delivery pipeline 12 communicates with gasification furnace feed inlet 142, and pulverized coal delivery pipeline 12 is equipped with pulverized coal flow element 121 and second control element 122, and raw material gas flow element 111, first control element 112, pulverized coal flow element 121 and second control element 122 are electrically connected with controller 13 respectively.

[0030] The utility model discloses a gasification furnace feed control device 10 sets up raw material gas flow element 111 and first control element 112 on the raw material gas delivery pipeline 11 of gasification furnace 14, sets up pulverized coal flow element 121 and second control element 122 on the pulverized coal delivery pipeline 12 of gasification furnace 14, and raw material gas flow element 111, first control element 112, pulverized coal flow element 121 and second control element 122 are electrically connected with controller 13 respectively. Raw material gas flow element 111 is used for monitoring the raw material gas flow of raw material gas delivery pipeline 11, and pulverized coal flow element 121 is used for monitoring the coal powder flow on pulverized coal delivery pipeline 12. When the gas consumption of the post-production system reduces and meets the adjustment condition, controller 13 can adjust first control element 112 and second control element 122 according to the flow feedback of raw material gas flow element 111 and pulverized coal flow element 121, to adjust the raw material gas supply amount of raw material gas delivery pipeline 11 and the coal powder supply amount of pulverized coal delivery pipeline 12, and make the proportion between the two reach the reasonable proportion of gasification furnace 14 coal gasification reaction, thereby reducing the gas supply amount of gasification furnace 14 under the premise of guaranteeing the gas supply quality of gasification furnace 14, and how much gas supply amount of gasification furnace 14 to reduce can be adjusted by controller 13 through first control element 112 and second control element 122 according to the needs of the post-production system. In this way, the problem that the gas supply amount of gasification furnace 14 is difficult to adjust in the prior art is solved, and when the gas demand of the post-production system reduces, gasification furnace 14 is difficult to adjust accordingly, and only excess coal gas can be handled through diffusion, causing the problems of enterprise production cost increase and environmental pollution.

[0031] Specifically, as Fig. 1 、 Fig. 2As shown, in the exemplary embodiment of the present disclosure, the controller 13 is a PLC controller 131, the raw material gas flow element 111 and the pulverized coal flow element 121 are in communication with the input port of the PLC controller 131, and the first control element 112 and the second control element 122 are in communication with the output port of the PLC controller 131. The PLC controller 131 is capable of receiving instructions from the upper computer system, in this embodiment, instructions from the post-production system, and according to the instructions, adjusting the first control element 112 and the second control element 122 connected to the output port thereof, and the input port of the PLC controller 131 is capable of receiving flow feedback from the raw material gas flow element 111 and the pulverized coal flow element 121.

[0032] For example, as Figs. 1-3 As shown, in the exemplary embodiment of the present disclosure, the gasification furnace 14 includes a primary gas inlet 141 and a secondary gas inlet 143, and the raw material gas delivery pipeline 11 includes a primary raw material gas delivery pipeline 113, a secondary raw material gas delivery pipeline 114, a steam delivery pipeline 115, and a combustion-supporting gas delivery pipeline 116, and the steam delivery pipeline 115 includes a first steam delivery bypass 1151 and a second steam delivery bypass 1152.

[0033] The primary raw material gas delivery pipeline 113 is in communication with the first steam delivery bypass 1151 and the combustion-supporting gas delivery pipeline 116 at one end, and is in communication with the primary gas inlet 141 at the other end, and the secondary raw material gas delivery pipeline 114 is in communication with the second steam delivery bypass 1152 and the combustion-supporting gas delivery pipeline 116 at one end, and is in communication with the secondary gas inlet 143 at the other end.

[0034] For example, the raw material gas flow element 111 includes a first electromagnetic flowmeter 1111, a second electromagnetic flowmeter 1112, a steam flowmeter 1113, and a combustion-supporting gas flowmeter 1114, and the first control element 112 includes a first electromagnetic valve 1121, a second electromagnetic valve 1122, a steam control valve 1123, and a combustion-supporting gas control valve 1124; the first electromagnetic flowmeter 1111 and the first electromagnetic valve 1121 are arranged in the primary raw material gas delivery pipeline 113, the second electromagnetic flowmeter 1112 and the second electromagnetic valve 1122 are arranged in the secondary raw material gas delivery pipeline 114, the steam flowmeter 1113 and the steam control valve 1123 are arranged in the steam delivery pipeline 115, and the combustion-supporting gas flowmeter 1114 and the combustion-supporting gas control valve 1124 are arranged in the combustion-supporting gas delivery pipeline 116.

[0035] In the example embodiment of the present disclosure, the gasifier 14 comprises a primary gas inlet 141 and a secondary gas inlet 143, the primary gas inlet 141 being in communication with the primary raw material gas delivery pipeline 113, and the secondary gas inlet 143 being in communication with the secondary raw material gas delivery pipeline 114. The coal gas production of the gasifier 14 is determined by the raw material gas supply amount of the primary raw material gas delivery pipeline 113 and the secondary raw material gas delivery pipeline 114, and the pulverized coal supply amount of the pulverized coal delivery pipeline 12. Therefore, to adjust the gas supply amount of the gasifier 14, the three delivery pipelines need to be reasonably adjusted so that the raw material supply amounts of the three delivery pipelines reach a reasonable proportion, so that the gas supply amount of the gasifier 14 can be reduced while ensuring the gas supply quality of the gasifier 14. In the present embodiment, the first electromagnetic flowmeter 1111 and the first electromagnetic valve 1121 are arranged on the primary raw material gas delivery pipeline 113, and the second electromagnetic flowmeter 1112 and the second electromagnetic valve 1122 are arranged on the secondary raw material gas delivery pipeline 114, the first electromagnetic flowmeter 1111 and the second electromagnetic flowmeter 1112 being in communication with the input port of the PLC controller 131 respectively, and the first electromagnetic valve 1121 and the second electromagnetic valve 1122 being in communication with the output port of the PLC controller 131 respectively. The PLC controller 131 adjusts the valve opening of the first electromagnetic valve 1121 and the second electromagnetic valve 1122 according to the needs of the post-production system, so that the raw material gas supply amounts of the primary raw material gas delivery pipeline 113 and the secondary raw material gas delivery pipeline 114 reach the expected values, and the first electromagnetic flowmeter 1111 and the second electromagnetic flowmeter 1112 can specifically feedback the flow of the primary raw material gas delivery pipeline 113 and the secondary raw material gas delivery pipeline 114, so that the control of the PLC controller 131 is more accurate.

[0036] In an exemplary embodiment of this disclosure, the raw material gas is a mixture of oxygen, air, and steam. Oxygen and air are combustion-supporting gases. The primary raw material gas delivery pipeline 113 is connected to the combustion-supporting gas delivery pipeline 116 and the first steam delivery bypass 1151, respectively, and the secondary raw material gas delivery pipeline 114 is connected to the combustion-supporting gas delivery pipeline 116 and the second steam delivery bypass 1152, respectively. To adjust the gas supply of the gasifier 14, the proportions of oxygen, air, and steam in the raw material gas can be adjusted to allow the raw material gas to be in different states such as pure oxygen or oxygen-enriched gas. In this embodiment, the steam delivery pipeline 115 is equipped with a steam flow meter 1113 and a steam control valve 1123, and the combustion-supporting gas delivery pipeline 116 is equipped with a combustion-supporting gas flow meter 1114 and a combustion-supporting gas control valve 1124. Thus, the steam supply to the steam delivery pipeline 115 can be adjusted by the steam control valve 1123, and the combustion-supporting gas supply to the combustion-supporting gas delivery pipeline 116 can be adjusted by the combustion-supporting gas control valve 1124. This, in turn, adjusts the ratio of oxygen, air, and steam in the raw material gas delivery pipeline 11 connected to these pipelines, allowing the raw material gas to be in different states such as pure oxygen or oxygen-enriched gas. In this embodiment, the steam flow meter 1113 and the combustion-supporting gas flow meter 1114 are respectively connected to the input ports of the PLC controller 131, and the steam control valve 1123 and the combustion-supporting gas control valve 1124 are respectively connected to the output ports of the PLC controller 131.

[0037] Specifically, such as Fig. 3 As shown, the primary raw material gas conveying pipeline 113 is sequentially equipped with a first mixer 1131, a first electromagnetic flowmeter 1111, a first solenoid valve 1121 and a first check valve 1132. The first check valve 1132 is connected to the primary gas inlet 141, and the first mixer 1131 is connected to the first steam conveying bypass 1151 and the combustion-supporting gas conveying pipeline 116 respectively.

[0038] The secondary raw material gas transmission pipeline 114 is sequentially equipped with a second mixer 1141, a second electromagnetic flowmeter 1112, a second solenoid valve 1122, and a second check valve 1142. The second check valve 1142 is connected to the secondary gas inlet 143, and the second mixer 1141 is connected to the second steam transmission bypass 1152 and the combustion-supporting gas transmission pipeline 116, respectively.

[0039] In the example embodiment of the present disclosure, a first check valve 1132 is arranged between the primary raw material gas delivery pipeline 113 and the primary gas inlet 141, and a second check valve 1142 is arranged between the secondary raw material gas delivery pipeline 114 and the secondary gas inlet 143, the first check valve 1132 and the second check valve 1142 being used to prevent the gas in the gasification furnace 14 from flowing back to the primary raw material gas delivery pipeline 113 and the secondary raw material gas delivery pipeline 114. The primary raw material gas delivery pipeline 113 is provided with a first mixer 1131, the first mixer 1131 being in communication with the combustion-supporting gas delivery pipeline 116 and a first steam delivery bypass 1151 respectively, and being used to mix the combustion-supporting gas and the steam. The secondary raw material gas delivery pipeline 114 is provided with a second mixer 1141, the second mixer 1141 being in communication with the combustion-supporting gas delivery pipeline 116 and a second steam delivery bypass 1152 respectively, and being used to mix the combustion-supporting gas and the steam.

[0040] Specifically, the combustion-supporting gas delivery pipeline 116 comprises an oxygen gas delivery pipeline 1161 and an air delivery pipeline 1162, the combustion-supporting gas flow meter 1114 comprises a first oxygen gas flow meter 11141 and a first air flow meter 11142, the combustion-supporting gas control valve 1124 comprises a first oxygen gas electromagnetic valve 11241 and a first air electromagnetic valve 11242, the oxygen gas delivery pipeline 1161 comprises, in sequence, an oxygen gas outlet of an air separation system 11611, the first oxygen gas flow meter 11141, the first oxygen gas electromagnetic valve 11241 and a preheater 11612, the air delivery pipeline 1162 comprises, in sequence, a blower 11623, a bleeder valve 11621, a pressure relief valve 11622, the first air flow meter 11142 and the first air electromagnetic valve 11242, the air delivery pipeline 1162 is in communication with the preheater 11612, and the preheater 11612 is in communication with the first mixer 1131 and the second mixer 1141 respectively through pipelines.

[0041] In the exemplary embodiment of the present disclosure, the preheater 11612 is in communication with the first mixer 1131 and the second mixer 1141 respectively, for providing heated raw material gas to the primary raw material gas delivery pipeline 113 and the secondary raw material gas delivery pipeline 114. The oxygen delivery pipeline 1161 comprises, in sequence, an oxygen outlet of the air separation system 11611, a first oxygen flow meter 11141, a first oxygen electromagnetic valve 11241, and the preheater 11612. The air delivery pipeline 1162 comprises, in sequence, a blower 11623, a bleeder valve 11621, a pressure relief valve 11622, a first air flow meter 11142, and a first air electromagnetic valve 11242. The first air electromagnetic valve 11242 is in communication with the preheater 11612 through a pipeline. The first oxygen electromagnetic valve 11241 is used to adjust the oxygen flow in the oxygen delivery pipeline 1161. The first air electromagnetic valve 11242 is used to adjust the air flow in the air delivery pipeline 1162. The first oxygen electromagnetic valve 11241 and the first air electromagnetic valve 11242 cooperate with each other to adjust the oxygen content in the combustion-supporting gas delivery pipeline 116. The pressure relief valve 11622 is used for pipeline pressure relief in emergency. The bleeder valve 11621 is used for bleeder pressure regulation when the blower 11623 is just started, to adjust the air delivery pipeline 1162 to a suitable pressure.

[0042] Specifically, the steam delivery pipeline 115 further comprises a third steam delivery bypass 1153, the steam flow meter 1113 comprises a first steam flow meter 11131, a second steam flow meter 11132, and a third steam flow meter 11133, the steam control valve 1123 comprises a first steam electromagnetic valve 11231, a second steam electromagnetic valve 11232, and a third steam electromagnetic valve 11233, the first steam delivery bypass 1151 is provided with the first steam electromagnetic valve 11231 and the first steam flow meter 11131 in sequence, the second steam delivery bypass 1152 is provided with the second steam electromagnetic valve 11232 and the second steam flow meter 11132 in sequence, the third steam delivery bypass 1153 is provided with the third steam electromagnetic valve 11233 and the third steam flow meter 11133 in sequence, and the third steam delivery bypass 1153 is in communication with the preheater 11612.

[0043] In an exemplary embodiment of this disclosure, a first oxygen solenoid valve 11241 is installed on the oxygen delivery pipeline 1161, a first air solenoid valve 11242 is installed on the air delivery pipeline 1162, and a third steam solenoid valve 11233 is installed on the third steam delivery pipeline 115. By coordinating and adjusting these three valves, the amount of oxygen, air, and steam entering the preheater 11612 is controlled, thereby initially adjusting the ratio of oxygen, air, and steam in the mixed and heated raw material gas. The preheater 11612 is connected to a first mixer 1131 and a second mixer 1141 via pipelines, providing heated raw material gas to both mixers. The first mixer 1131 is also connected to a first steam delivery bypass 1151, and the second mixer 1141 is also connected to a second steam delivery bypass 1152. Adjusting the first steam solenoid valve 11231 and the second steam solenoid valve 11232 can further adjust the ratio of oxygen, air, and steam in the raw material gas.

[0044] For example, such as Figs. 1-3 As shown in the exemplary embodiment of this disclosure, the pulverized coal conveying pipeline 12 includes a nitrogen conveying bypass 123 and a dry pulverized coal conveying bypass 124. The dry pulverized coal conveying bypass 124 is sequentially provided with an atmospheric pressure coal bunker 1241, a pulverized coal metering hopper 1242, a variable pressure coal hopper 1243, a high pressure coal hopper 1244, and a screw conveyor 1221. The nitrogen conveying bypass 123 includes a nitrogen pressurization bypass 1231 and a nitrogen blowing bypass 1232. The nitrogen pressurization bypass 1231 is connected to the variable pressure coal hopper 1243. The discharge port of the screw conveyor 1221 is connected to the nitrogen blowing bypass 1232. The nitrogen blowing bypass 1232 is connected to the gasifier inlet 142.

[0045] For example, in an exemplary embodiment of this disclosure, the pulverized coal flow element 121 includes a level gauge 1211, which is disposed within the pulverized coal metering hopper 1242. The second control element 122 includes a feeder 1222 and a screw conveyor 1221. The inlet of the feeder 1222 is connected to the outlet of the high-pressure coal hopper 1244, and the outlet of the feeder 1222 is connected to the inlet of the screw conveyor 1221.

[0046] In the exemplary embodiment of the present disclosure, the pulverized coal on the dry pulverized coal conveying bypass 124 first enters the normal pressure coal bunker 1241, and enters the pulverized coal metering hopper 1242 through the coal outlet pipeline of the normal pressure coal bunker 1241. A material level meter 1211 is arranged in the pulverized coal metering hopper 1242, and the material level meter 1211 is connected to the input port of the PLC controller 131 to feed back the material level of the pulverized coal in the pulverized coal metering hopper 1242. The pulverized coal enters the pressure change coal hopper 1243 through the coal outlet pipeline in the pulverized coal metering hopper 1242. The pressure change coal hopper 1243 is connected to the nitrogen pressurization bypass 1231, and the nitrogen pressurization bypass 1231 inputs high-pressure nitrogen into the pressure change coal hopper 1243 to press the pulverized coal into the high-pressure coal hopper 1244. A feeder 1222 is arranged on the coal outlet pipeline of the high-pressure coal hopper 1244, and the outlet of the feeder 1222 is connected to the inlet of the screw conveyor 1221. The feeder 1222 and the screw conveyor 1221 are connected to the output port of the PLC controller 131. The PLC controller 131 can adjust the rotational speed opening of the feeder 1222 and the screw conveyor 1221, thereby controlling the supply amount of the pulverized coal of the dry pulverized coal conveying bypass 124. After the pulverized coal enters the high-pressure coal hopper 1244, the feeder 1222 feeds the pulverized coal into the inlet of the screw conveyor 1221 at a certain flow rate and supply amount under the adjustment of the PLC controller 131. The pulverized coal is conveyed by the screw conveyor 1221 and enters the nitrogen blowing bypass 1232, and the high-pressure nitrogen in the nitrogen blowing bypass 1232 is used to send the pulverized coal to the gasifier 14. At the outlet of the screw conveyor 1221, the pulverized coal is fluidized by the high-pressure nitrogen in the nitrogen blowing bypass 1232 and is injected into the gasifier through the gasifier inlet 142.

[0047] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0048] In addition, it should be noted that each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0049] In addition, any combination of various different embodiments of the present disclosure can also be made, as long as it does not deviate from the idea of the present disclosure, and it should also be considered as disclosed in the present disclosure.

Claims

1. A gasifier feeding control device, characterized in that, include A raw material gas conveying pipeline is connected to the gas inlet of the gasifier, and the raw material gas conveying pipeline is equipped with a raw material gas flow element and a first control element; A pulverized coal conveying pipeline is connected to the gasifier inlet, and the pulverized coal conveying pipeline is equipped with a pulverized coal flow element and a second control element. The raw material gas flow element, the first control element, the pulverized coal flow element, and the second control element are electrically connected to the controller.

2. The gasifier feeding control device according to claim 1, characterized in that, The gasifier includes a primary gas inlet and a secondary gas inlet. The raw material gas conveying pipeline includes a primary raw material gas conveying pipeline, a secondary raw material gas conveying pipeline, a steam conveying pipeline, and a combustion-supporting gas conveying pipeline. The steam conveying pipeline includes a first steam conveying bypass and a second steam conveying bypass. One end of the primary raw material gas transmission pipeline is connected to the first steam transmission bypass and the combustion-supporting gas transmission pipeline, and the other end of the primary raw material gas transmission pipeline is connected to the primary gas inlet. One end of the secondary raw material gas transmission pipeline is connected to the second steam transmission bypass and the combustion-supporting gas transmission pipeline, and the other end of the secondary raw material gas transmission pipeline is connected to the secondary gas inlet.

3. The gasifier feeding control device according to claim 2, characterized in that, The raw material gas flow element includes a first electromagnetic flow meter, a second electromagnetic flow meter, a steam flow meter, and a combustion-supporting gas flow meter. The first control element includes a first solenoid valve, a second solenoid valve, a steam control valve, and a combustion-supporting gas control valve. The first electromagnetic flow meter and the first electromagnetic valve are installed in the primary raw material gas conveying pipeline, the second electromagnetic flow meter and the second electromagnetic valve are installed in the secondary raw material gas conveying pipeline, the steam flow meter and the steam control valve are installed in the steam conveying pipeline, and the combustion-supporting gas flow meter and the combustion-supporting gas control valve are installed in the combustion-supporting gas conveying pipeline.

4. The gasifier feeding control device according to claim 3, characterized in that, The primary raw material gas conveying pipeline is provided with a first mixer, a first electromagnetic flow meter, a first solenoid valve and a first check valve in sequence. The first check valve is connected to the primary gas inlet, and the first mixer is connected to the first steam conveying bypass and the combustion-supporting gas conveying pipeline respectively. The secondary raw material gas transmission pipeline is sequentially equipped with a second mixer, a second electromagnetic flow meter, a second solenoid valve, and a second check valve. The second check valve is connected to the secondary gas inlet, and the second mixer is connected to the second steam transmission bypass and the combustion-supporting gas transmission pipeline, respectively.

5. The gasifier feeding control device according to claim 4, characterized in that, The combustion-supporting gas delivery pipeline includes an oxygen delivery pipeline and an air delivery pipeline. The combustion-supporting gas flow meter includes a first oxygen flow meter and a first air flow meter. The combustion-supporting gas control valve includes a first oxygen solenoid valve and a first air solenoid valve. The oxygen delivery pipeline sequentially includes an oxygen outlet of the air separation system, a first oxygen flow meter, a first oxygen solenoid valve, and a preheater. The air delivery pipeline sequentially includes a blower, a vent valve, an explosion relief valve, a first air flow meter, and a first air solenoid valve. The air delivery pipeline is connected to the preheater. The preheater is connected to the first mixer and the second mixer via pipelines.

6. The gasifier feed control device according to claim 5, characterized in that, The steam delivery pipeline also includes a third steam delivery bypass. The steam flow meter includes a first steam flow meter, a second steam flow meter, and a third steam flow meter. The steam control valve includes a first steam solenoid valve, a second steam solenoid valve, and a third steam solenoid valve. The first steam delivery bypass is equipped with a first steam solenoid valve and a first steam flow meter in sequence. The second steam delivery bypass is equipped with a second steam solenoid valve and a second steam flow meter in sequence. The third steam delivery bypass is equipped with a third steam solenoid valve and a third steam flow meter in sequence. The third steam delivery bypass is connected to the preheater.

7. The gasifier feeding control device according to claim 1, characterized in that, The pulverized coal conveying pipeline includes a nitrogen conveying bypass and a dry pulverized coal conveying bypass. The dry pulverized coal conveying bypass is sequentially equipped with an atmospheric pressure coal bunker, a pulverized coal metering hopper, a variable pressure coal hopper, a high pressure coal hopper, and a screw conveyor. The nitrogen conveying bypass includes a nitrogen pressurization bypass and a nitrogen blowing bypass. The nitrogen pressurization bypass is connected to the variable pressure coal hopper. The discharge port of the screw conveyor is connected to the nitrogen blowing bypass. The nitrogen blowing bypass is connected to the gasifier inlet.

8. The gasifier feed control device according to claim 7, characterized in that, The pulverized coal flow element includes a level gauge, which is installed inside the pulverized coal metering hopper.

9. The gasifier feeding control device according to claim 7, characterized in that, The second control element includes a feeder and the screw conveyor. The inlet of the feeder is connected to the outlet of the high-pressure coal hopper, and the outlet of the feeder is connected to the inlet of the screw conveyor.

10. The gasifier feed control device according to claim 1, characterized in that, The controller is a PLC controller. The raw material gas flow element and the pulverized coal flow element are connected to the input port of the PLC controller, and the first control element and the second control element are connected to the output port of the PLC controller.

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