Biomass gasification control system

Abstract

The utility model relates to a biomass gasification control system which comprises a furnace body, a feeding assembly, an air supply assembly, a discharging assembly, a detection assembly, a feeding controller, an air pressure controller and a discharging controller, the feeding assembly, the air supply assembly and the discharging assembly are all communicated with the furnace body, and the detection end of the detection assembly is installed in the furnace body. The detection assembly is used for detecting pressure information and material level information in the furnace body, the feeding controller is connected with the detection assembly and the feeding assembly and controls the feeding assembly to act according to the material level information, the air pressure controller is connected with the detection assembly and the air supply assembly and controls the air supply assembly to act according to the pressure information, and the discharging controller is connected with the discharging assembly and controls the discharging assembly to act according to the pressure information. The control assembly is used for controlling the discharging speed of the discharging assembly; according to the requirement of a client for the carbon content of biomass charcoal, the discharging controller can adjust the time of the biomass charcoal staying in the furnace body through the discharging control assembly, and therefore the charcoal production quality is controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass gasification, in particular to a biomass gasification control system. Background Art

[0002] At present, the operation of biomass gasifiers is generally through a simple control system. Specifically, the feed amount can be automatically controlled according to the pressure in the furnace.

[0003] For example, the utility model patent with application number CN202021107958.8 proposes a biomass gasifier internal pressure control system, which includes a biomass feeding device and a gasifier. The gasifier is provided with a biomass feeding port. The biomass feeding device includes a silo, a first-level feeding screw, a feeding pipe, a blower and a second-level feeding screw. The first-level feeding screw is connected with the silo and the feeding pipe, the second-level feeding screw is connected with the feeding pipe and the biomass feeding port, the blower is installed on the feeding pipe, the first-level feeding screw is provided with a feeding rate adjustment mechanism, the gasifier is provided with a blast / induced draft adjustment mechanism, the gasifier is provided with an infrared temperature measurement module and a control module, the infrared temperature measurement module is provided with a temperature limit and a heating time limit, the control module is controlled and connected with the feeding rate adjustment mechanism and the blast / induced draft adjustment mechanism, and the internal pressure change is monitored by the change of the gasifier temperature, thereby regulating the pressure and feeding amount.

[0004] The quality of biochar is related to its carbon content, which depends on the residence time of the biochar in the furnace. However, since it is impossible to control the residence time of the biochar in the furnace, it is difficult to control the quality of the produced charcoal. Utility Model Content

[0005] In view of this, it is necessary to provide a biomass gasification control system to solve the problem of difficulty in controlling the quality of produced charcoal due to the inability to control the residence time of the biomass charcoal in the furnace.

[0006] The utility model provides a biomass gasification control system, comprising a furnace body, a feed component, an air supply component, a discharging component, a detection component, a feed controller, an air pressure controller and a discharging controller, wherein the feed component, the air supply component and the discharging component are all connected to the furnace body, the detection end of the detection component is installed in the furnace body, and is used to detect pressure information and material level information in the furnace body, the feed controller is connected with the detection component and the feed component, and controls the action of the feed component according to the material level information, the air pressure controller is connected with the detection component and the air supply component, and controls the action of the air supply component according to the pressure information, and the discharging controller is connected with the discharging component, and is used to control the discharging rate of the discharging component.

[0007] Furthermore, the feeding assembly includes a first silo, a second silo and a feeding auger, the bottom of the first silo is connected to the top of the second silo, the bottom of the second silo is connected to the feeding auger, and the discharge end of the feeding auger extends to the center position inside the furnace body.

[0008] Furthermore, the feed controller includes a first bin position radar and a first bin cylinder installed in the first bin, and a second bin position radar and a second bin cylinder installed in the second bin, the first bin position radar and the second bin position radar are used to detect the material level information in the first bin and the second bin, respectively, the output end of the first bin cylinder moves along the direction toward the bottom of the first bin to open or close the bottom of the first bin, and the output end of the second bin cylinder moves along the direction toward the bottom of the second bin to open or close the bottom of the second bin.

[0009] Furthermore, the second silo cylinder is connected to the first silo position radar and operates according to the material level information in the first silo. The second silo cylinder is connected to the detection component and operates according to the material level information in the furnace body. The first silo cylinder and the second silo cylinder control the first silo and the second silo to open and close alternately.

[0010] Furthermore, the air supply assembly includes an air mixing piece and a combustion-supporting fan. The air mixing piece is connected to the side wall of the bottom of the furnace body to transport a mixed gas of air and steam. The combustion-supporting fan is connected to the bottom of the furnace body to transport air.

[0011] Furthermore, the air pressure controller includes an air volume control component, which is connected to the air mixing component, the combustion-supporting fan and the detection component, and the air mixing component and the combustion-supporting fan operate according to pressure information.

[0012] Furthermore, it also includes a first pressure relief valve connected to the detection component and installed on the side wall of the furnace body, and a second pressure relief valve installed on the top of the furnace body, and the first pressure relief valve and the second pressure relief valve are operated according to pressure information.

[0013] Furthermore, the discharge assembly includes a charcoal ash discharge tray rotatably connected to the bottom of the furnace body, a plurality of connecting cylinders communicated with the bottom of the furnace body, and a discharge auger communicated with the bottom ends of the plurality of connecting cylinders. A plurality of discharge ports are formed on the charcoal ash discharge tray, and the rotation paths of the plurality of discharge ports cover the plurality of connecting cylinders so that the plurality of discharge ports are alternately moved to a position facing the plurality of connecting cylinders.

[0014] Furthermore, the discharging assembly includes a discharging control cylinder connected to the detection assembly, and the discharging controller is installed in the connecting tube to open or close the connecting tube, and the discharging control cylinder operates according to the material level information in the furnace body.

[0015] Furthermore, it also includes a flattening assembly, which includes a flattening motor and a flattening plate. The flattening motor is installed on the top of the furnace body and its output end extends into the furnace body and is connected to the flattening plate. The flattening plate is horizontally arranged and used to scrape the materials accumulated in the furnace body.

[0016] The flat plate is a tapered plate that gradually expands upward.

[0017] Compared with the existing technology, the feed controller controls the feed speed according to the material level information in the furnace body obtained by the detection component, and the air pressure controller controls the gas supply speed according to the pressure information in the furnace body obtained by the detection component, thereby ensuring the stability of the pressure in the furnace body. At the same time, according to the customer's demand for the carbon content of biochar, the discharge controller can adjust the time that the biochar stays in the furnace body through the control of the discharge component, thereby controlling the quality of the produced charcoal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of the biomass gasification control system provided in an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the structure of the overall upper part of the biomass gasification control system provided in an embodiment of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the overall lower part of the biomass gasification control system provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0022] like Figure 1-3As shown, the utility model provides a biomass gasification control system, including a furnace body 100, a feed component 200, an air supply component 300, a discharging component 400, a detection component 500, a feed controller 600, an air pressure controller 700 and a discharging controller 800. The feed component 200, the air supply component 300 and the discharging component 400 are all connected to the furnace body 100. The detection end of the detection component 500 is installed in the furnace body 100 to detect the pressure information and material level information in the furnace body 100. The feed controller 600 connects the detection component 500 and the feed component 200, and controls the action of the feed component 200 according to the material level information. The air pressure controller 700 connects the detection component 500 and the air supply component 300, and controls the action of the air supply component 300 according to the pressure information. The discharging controller 800 is connected to the discharging component 400 to control the discharging rate of the discharging component 400.

[0023] During implementation, the feed controller 600 controls the feed speed according to the material level information in the furnace body 100 obtained by the detection component 500, and the air pressure controller 700 controls the gas supply speed according to the pressure information in the furnace body 100 obtained by the detection component 500, thereby ensuring the stability of the pressure in the furnace body 100. At the same time, according to the customer's demand for the carbon content of biochar, the discharge controller 800 can adjust the time that the biochar stays in the furnace body 100 by controlling the discharge component 400, thereby controlling the quality of the produced charcoal.

[0024] The furnace body 100 in this embodiment provides a closed environment for biomassing.

[0025] The feeding assembly 200 in this embodiment includes a first silo 210, a second silo 220 and a feeding auger 230. The bottom of the first silo 210 is connected to the top of the second silo 220, the bottom of the second silo 220 is connected to the feeding auger 230, and the discharge end of the feeding auger 230 extends to the center position inside the furnace body 100.

[0026] In order to know the reaction status in the furnace body 100, so as to control the feeding and air supply, the detection component 500 in this embodiment includes a furnace level sensor 520 and a furnace pressure sensor 510. Among them, the furnace level sensor 520 can be an ultrasonic sensor or a laser sensor, etc., which is used to obtain the material level information in the furnace body 100. It can be set to detect and judge once every 5 seconds. If the material level is too low, feed the material, and if the material level is too high, stop feeding the material. At the same time, the furnace pressure sensor 510 can be a pressure transmitter, which is used to obtain the pressure information in the furnace body 100.

[0027] To facilitate the control of the feed rate, in one embodiment, the feed controller 600 includes a first bin position radar 610 and a first bin cylinder 620 installed in the first bin 210, and a second bin position radar 630 and a second bin cylinder 640 installed in the second bin 220. The first bin position radar 610 and the second bin position radar 630 are used to detect the material level information in the first bin 210 and the second bin 220, respectively. The output end of the first bin cylinder 620 moves toward the bottom of the first bin 210 to open or close the bottom of the first bin 210.

[0028] At the same time, the driving part of the feeding auger 230 is installed with a feeding reducer, which can control the feeding rate of the feeding auger 230.

[0029] It should be noted that the output end of the second silo cylinder 640 moves toward the bottom of the second silo 220 to open or close the bottom of the second silo 220, thereby preventing the furnace body 100 from being connected to the outside during the feeding process, resulting in heat energy loss.

[0030] Specifically, the second silo cylinder 640 is connected to the first silo position radar 610, and operates according to the material level information in the first silo 210. The second silo cylinder 640 is connected to the detection component 500, and operates according to the material level information in the furnace body 100. The first silo cylinder 620 and the second silo cylinder 640 control the first silo 210 and the second silo 220 to open and close alternately.

[0031] The air supply assembly 300 in this embodiment is used to transport heat and air to the furnace body 100. In one embodiment, the air supply assembly 300 includes an air mixing piece 310 and a combustion-supporting fan 320. The air mixing piece 310 is connected to the side wall of the bottom of the furnace body 100 to transport a mixed gas of air and steam. The combustion-supporting fan 320 is connected to the bottom of the furnace body 100 to transport air.

[0032] To facilitate control and ensure the pressure stability of the furnace body 100, in one embodiment, the air pressure controller 700 includes an air volume control component 710, which is connected to the air mixing component 310, the combustion-supporting fan 320 and the detection component 500, and the air mixing component 310 and the combustion-supporting fan 320 operate according to the pressure information.

[0033] In order to avoid a safety accident caused by excessive pressure in the furnace body 100 and the inability to adjust it in time, in one embodiment, it also includes a first pressure relief valve 720 connected to the detection component 500 and installed on the side wall of the furnace body 100, and a second pressure relief valve 730 installed on the top of the furnace body 100. The first pressure relief valve 720 and the second pressure relief valve 730 are actuated according to the pressure information.

[0034] The discharge assembly 400 in this embodiment is used to discharge the biochar from the furnace body 100. In one embodiment, the discharge assembly 400 includes a charcoal ash tray 410 rotatably connected to the bottom of the furnace body 100, a plurality of connecting cylinders 420 connected to the bottom of the furnace body 100, and a discharge auger 430 connected to the bottom ends of the plurality of connecting cylinders 420. A plurality of discharge ports are formed on the charcoal ash tray 410, and the rotation paths of the plurality of discharge ports cover the plurality of connecting cylinders 420 so that the plurality of discharge ports are alternately moved to a position facing the plurality of connecting cylinders 420.

[0035] At the same time, the driving part of the discharging auger 430 is installed with a discharging reducer 820, which can control the feeding rate of the discharging auger 430.

[0036] By rotating the charcoal ash tray 410, the biochar in the lower layer can be continuously discharged. It can be understood that the discharge rate of the biochar can be controlled by controlling the rotation rate of the charcoal ash tray 410. Specifically, the charcoal ash tray 410 is driven by a motor, and the rotation rate of the charcoal ash tray 410 is adjusted by the power of the motor.

[0037] In one embodiment, the discharge assembly 400 includes a discharge control cylinder 810 connected to the detection assembly 500. The discharge controller 800 is installed in the connecting tube 420 to open or close the connecting tube 420. The discharge control cylinder 810 operates according to the material level information in the furnace body 100.

[0038] In order to improve the uniformity of the reaction in the furnace body 100, the present embodiment also includes a leveling component 900, which includes a leveling motor 910 and a leveling plate 930. The leveling motor 910 is installed on the top of the furnace body 100 and its output end extends into the furnace body 100 and is connected to the leveling plate 930. The leveling plate 930 is horizontally arranged to scrape the accumulated materials in the furnace body 100.

[0039] In one embodiment, the flat plate 930 is a tapered plate that gradually expands upward. At the same time, a flat reducer 920 is installed on the flat motor 910 to control the rotation rate of the flat plate 930. It should be noted that the flat motor 910 is linked with the feeding auger 230, or the flat motor 910 delays the action, that is, the flat motor 910 acts during or after feeding.

[0040] Compared with the prior art: the feed controller 600 controls the feed speed according to the material level information in the furnace body 100 obtained by the detection component 500, and the air pressure controller 700 controls the gas supply speed according to the pressure information in the furnace body 100 obtained by the detection component 500, thereby ensuring the stability of the pressure in the furnace body 100. At the same time, according to the customer's demand for the carbon content of biochar, the discharge controller 800 can adjust the time that the biochar stays in the furnace body 100 by controlling the discharge component 400, thereby controlling the quality of the produced charcoal.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A biomass gasification control system, characterized in that: include: Furnace body; A feeding assembly, a gas supply assembly and a discharging assembly, all of which are connected to the furnace body; A detection component, whose detection end is installed in the furnace body, for detecting pressure information and material level information in the furnace body; A feeding controller, which is connected to the detection component and the feeding component, and controls the action of the feeding component according to the material level information; An air pressure controller, which is connected to the detection component and the air supply component, and controls the action of the air supply component according to the pressure information; A discharging controller is connected to the discharging component and is used to control the discharging rate of the discharging component.

2. The biomass gasification control system according to claim 1, characterized in that: The feeding assembly includes a first silo, a second silo and a feeding auger. The bottom of the first silo is connected to the top of the second silo, the bottom of the second silo is connected to the feeding auger, and the discharge end of the feeding auger extends to the center position inside the furnace body.

3. The biomass gasification control system according to claim 2, characterized in that: The feed controller includes a first bin position radar and a first bin cylinder installed in the first bin, and a second bin position radar and a second bin cylinder installed in the second bin, the first bin position radar and the second bin position radar are used to detect the material level information in the first bin and the second bin respectively, the output end of the first bin cylinder moves along the direction toward the bottom of the first bin to open or close the bottom of the first bin, and the output end of the second bin cylinder moves along the direction toward the bottom of the second bin to open or close the bottom of the second bin.

4. The biomass gasification control system according to claim 3, characterized in that: The second silo cylinder is connected to the first silo position radar and operates according to the material level information in the first silo. The second silo cylinder is connected to the detection component and operates according to the material level information in the furnace body. The first silo cylinder and the second silo cylinder control the first silo and the second silo to open and close alternately.

5. The biomass gasification control system according to claim 1, characterized in that: The air supply assembly includes an air mixing piece and a combustion-supporting fan. The air mixing piece is connected to the side wall of the bottom of the furnace body to transport a mixed gas of air and steam. The combustion-supporting fan is connected to the bottom of the furnace body to transport air.

6. The biomass gasification control system according to claim 5, characterized in that: The air pressure controller includes an air volume control component, which is connected to the air mixing component, the combustion-supporting fan and the detection component. The air mixing component and the combustion-supporting fan operate according to pressure information.

7. The biomass gasification control system according to claim 6, characterized in that: It also includes a first pressure relief valve connected to the detection component and installed on the side wall of the furnace body, and a second pressure relief valve installed on the top of the furnace body, and the first pressure relief valve and the second pressure relief valve are operated according to pressure information.

8. The biomass gasification control system according to claim 1, characterized in that: The discharge assembly includes a charcoal ash discharge tray rotatably connected to the bottom of the furnace body, a plurality of connecting cylinders communicated with the bottom of the furnace body, and a discharge auger communicated with the bottom ends of the plurality of connecting cylinders. A plurality of discharge ports are formed on the charcoal ash discharge tray, and the rotation paths of the plurality of discharge ports cover the plurality of connecting cylinders so that the plurality of discharge ports are alternately moved to a position facing the plurality of connecting cylinders.

9. The biomass gasification control system according to claim 8, characterized in that: The discharging assembly includes a discharging control cylinder connected to the detection assembly. The discharging controller is installed in the connecting tube to open or close the connecting tube. The discharging control cylinder operates according to the material level information in the furnace body.

10. The biomass gasification control system according to claim 1, characterized in that: It also includes a flat material assembly, which includes a flat material motor and a flat material plate. The flat material motor is installed on the top of the furnace body and its output end extends into the furnace body and is connected to the flat material plate. The flat material plate is horizontally arranged and used to scrape the materials accumulated in the furnace body. The flat plate is a tapered plate that gradually expands upward.

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