Whole-flow closed rice husk charcoal-steam combined production heat supply system

Abstract

The utility model provides a full-process closed type rice husk carbon-steam combined production heat supply system which comprises a negative pressure material suction device, a closed square bin, a closed type gasification furnace, a heat insulation combustion furnace, a boiler heat exchange system, a dust removal device, an SCNR denitration device, an induced draft fan, a chimney, a product negative pressure conveying pipeline and a closed storage and packaging system. Rice husks are sucked into the closed square bin through negative pressure, rice husk charcoal is directly conveyed into the product bin through negative pressure to be packaged, the whole process does not fall to the ground and is not transferred, the whole system is totally closed, the dust-free working environment is guaranteed, and dust pollution is avoided; the square bin is closed, impurities or open fire are prevented from being mixed in, raw materials are prevented from making contact with kindling materials to be ignited, safety is high, economical efficiency is good, solid waste and waste water are avoided, and environment friendliness is achieved; the problem of high-value utilization of the rice hulls is well solved, the product value is greatly improved, and the safety and environment-friendly problems that a conventional biomass utilization project is low in additional value, and a warehouse and a material conveying system are large in dust, prone to catching fire and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to biomass energy green low carbon, safe environmental protection, high quality utilization technical field especially relates to a whole process closed type rice hull charcoal and steam cogeneration heat supply system. BACKGROUND

[0002] Biomass gasification technology uses various agricultural wastes, forestry wastes as raw materials to produce combustible gas, which can be used as heat source, or for power generation, or for producing chemical products (such as methanol, dimethyl ether and ammonia, etc.). Rice hull is a common raw material in biomass gasification technology, which can be used to prepare rice hull charcoal. The rice hull charcoal is a substance formed by incomplete combustion of rice hull, which can be used as heat insulation material in the production of steel, iron, etc. in industrial production, and can be used for vegetable, flower, seedling, fruit tree and other crop cultivation, soil improvement in agriculture, and can be used as clean energy for fire and heating in life.

[0003] However, the current rice hull charcoal and steam cogeneration technology has the following problems:

[0004] (1) In the existing production and manufacturing process, the raw material rice hull is transported by a transport vehicle to a warehouse, and is poured or stored in the warehouse by workers through a shovel. Since the rice hull itself contains a lot of dust, dust is flying during the transportation to the warehouse, causing dust pollution and affecting the health of workers.

[0005] (2) Since the existing rice hull warehouse is open, personnel, vehicles, etc. can enter, and impurities can easily mix in. Since rice hull is a combustible material, when open fire mixes in the warehouse, fire can easily occur, which has serious safety hazards.

[0006] (3) Since the existing rice hull charcoal is mostly transported by a belt conveyor, a bucket elevator and a scraper conveyor, there is a lot of dust during the transportation process, and the charcoal is still on fire after being discharged from the furnace, which can easily cause fire and has serious safety hazards.

[0007] (4) The existing boiler uses a gas boiler, which is difficult to clean and discharge ash. After the ash accumulates in the boiler, it can only be cleaned and discharged manually after the boiler is stopped, which affects the efficiency.

[0008] (5) The existing rice hull carbonization is usually prepared by incomplete combustion method, which can produce a lot of solid waste such as waste residue. The heat and flue gas generated during the carbonization process are directly discharged into the atmosphere, the heat cannot be fully utilized, and the environment is polluted. SUMMARY

[0009] In view of the above problems, the utility model provides a whole process closed type rice hull charcoal and steam cogeneration heat supply system.

[0010] To achieve the above purpose, the utility model adopts the following technical scheme:

[0011] A full-process closed rice husk carbon and steam co-production heating system, comprising a negative pressure suction device, a closed square warehouse, a closed gasification furnace, an adiabatic combustion furnace, a boiler heat exchange system, a dust removal device, an SNCR denitration device, an induced draft fan and a chimney, a product negative pressure conveying pipeline and a closed storage and packaging system.

[0012] The closed gasification furnace comprises a feeding port, a carbon outlet and a fuel gas outlet;

[0013] The negative pressure suction device is connected to the closed square warehouse, the outlet of the closed square warehouse is connected to the feeding port of the closed gasification furnace through a conveying device, the carbon outlet of the closed gasification furnace is connected to the closed storage and packaging system through a negative pressure conveying pipeline, the fuel gas outlet is connected to the adiabatic combustion furnace, the flue gas outlet of the adiabatic combustion furnace is connected to the boiler heat exchange system, the boiler heat exchange system is connected to the dust removal device through an SNCR denitration device, an economizer and an air preheater, and the gas outlet of the dust removal device is connected to the chimney through the induced draft fan.

[0014] The negative pressure suction device comprises a suction fan, a cyclone separator, a closing fan and a feeding pipe, the cyclone separator is connected to a suction pipe, the suction fan comprises an air inlet end and an air outlet end, the air inlet end is connected to the cyclone separator, the outlet of the cyclone separator is connected to the upper end of the closing fan, and the lower end of the closing fan is connected to the feeding pipe, the front end of the feeding pipe is connected to the air outlet end of the suction fan, and the tail end of the feeding pipe is connected to the closed square warehouse.

[0015] Further, the conveying device comprises a first scraper, an elevator, a second scraper, a furnace front hopper, a feeding screw conveyor and a first closing fan.

[0016] The bottom of the closed square warehouse is provided with a plurality of cones, the lower end of each cone is provided with the outlet, the first scraper is provided with a material inlet, the material inlet is connected to the outlet of the closed square warehouse, the rear end of the first scraper is connected to the lower end of the elevator, the upper end of the elevator is connected to the front end of the second scraper, and the rear end of the second scraper is connected to the furnace front hopper, the feeding screw conveyor is arranged at the lower outlet of the furnace front hopper, the outlet of the feeding screw conveyor is connected to the feeding port of the closed gasification furnace through a pipeline, and the pipeline is provided with the first closing fan.

[0017] Further, the closed gasification furnace is a closed down-draft gasification furnace, and the top of the closed gasification furnace is further provided with an air distribution port connected to a blower.

[0018] Further, the bottom of the adiabatic combustion furnace is provided with an ash discharge hopper, the ash discharge hopper is conical, and an ash discharge valve is arranged below the ash discharge hopper.

[0019] Further, the closed gasification furnace and the adiabatic combustion furnace are further provided with a first cyclone separator and a fan, the closed gasification furnace is connected with an air inlet of the first cyclone separator, and a gas outlet of the first cyclone separator is connected with the adiabatic combustion furnace through the fan.

[0020] Further, the closed square bin is further connected with a pressure relief dust removal bin through a pipeline, and the pressure relief dust removal bin is also a cyclone separator.

[0021] Further, the closed storage and packaging system comprises a packaging machine, a carbon screw conveyor, a product negative pressure conveying pipeline and a second cyclone separator, the carbon screw conveyor comprises an inlet end and an outlet end, the inlet end of the carbon screw conveyor is connected with the carbon outlet of the closed gasification furnace, the outlet end is connected with one end of the product negative pressure conveying pipeline, the other end of the product negative pressure conveying pipeline is connected with the second cyclone separator, a second air lock fan is arranged on the product negative pressure conveying pipeline, the lower portion of the second cyclone separator is connected with the packaging machine, a third air lock fan is arranged between the second cyclone separator and the packaging machine, and a suction fan is further connected with the gas outlet of the second cyclone separator.

[0022] Further, the carbon screw conveyor is arranged in an inclined mode, and the carbon screw conveyor is arranged in an inclined mode upwards from the connection position with the closed gasification furnace.

[0023] Further, a dust remover is further arranged between the second cyclone separator and the suction fan.

[0024] Further, the suction pipe is a flexible pipe.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows: (1) the feeding device comprises a suction fan, a cyclone separator, an air lock fan and a conveying pipe, the cyclone separator is connected with a suction pipe, when feeding, the suction fan is used for sucking, the suction pipe is used for sucking the material into the cyclone separator, a high-speed airflow is formed in the cyclone separator for separation, the material is discharged from the air lock fan into the conveying pipe, then the air discharged from the suction fan is blown into the closed square bin, and the air lock fan can ensure the negative pressure state of the cyclone separator. The rice hulls are sucked into the closed square bin, manual transfer is not needed, the closed property of the closed square bin is ensured, manual transfer is not needed, dust raising is avoided, the whole system is fully closed, a dust-free working environment is ensured, and dust pollution is avoided.

[0026] (2) the rice hulls are sucked into the closed square bin through negative pressure, the closed property of the closed square bin is ensured, the complexity of the personnel in the closed square bin is avoided, foreign matters or open fires are avoided from being mixed, the closed square bin is avoided from catching fire, and the safety of the system is improved.

[0027] (3) The produced rice husk charcoal is transported by negative pressure and separated by cyclone, so that the closed property of the transportation process is ensured, there is no product transfer link, the on-site environment is good, and there is no dust.

[0028] (4) The gas is combusted in a special adiabatic combustion chamber, so that the stability of combustion is ensured, and the ash can be periodically and on-line cleaned and discharged through the arranged ash discharge chute and ash discharge valve, without stopping the furnace, so that the operation cycle and stability of the boiler are improved, and the efficiency is high.

[0029] (5) The rice husk charcoal and the combustible gas are produced by the closed gasification furnace, so that no solid waste such as furnace ash or furnace slag is generated, and no waste water is generated, the by-product rice husk charcoal is recycled by packaging, the combustible gas enters the combustion furnace through the gas outlet, the flue gas generated by combustion of the combustible gas is fully utilized, and then is discharged after dust removal, the economy is good, no solid waste and waste water are generated, the system is green and environmentally friendly, the problems of high-quality utilization of rice husk and green low-carbon, safety and environmental protection are solved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a whole-process closed rice husk charcoal and gas cogeneration heat supply system structure diagram. DETAILED DESCRIPTION

[0031] In order to further understand the purpose, structure, characteristics and functions of the utility model, the following detailed description is made in conjunction with the embodiments.

[0032] Please refer to Figure 1 The utility model is a whole-process closed rice husk charcoal and gas cogeneration heat supply system, which comprises a negative pressure suction device 100, a closed square warehouse 200, a closed gasification furnace 300, an adiabatic combustion furnace 400, a boiler heat exchange system 610, a dust removal device 700, an SCNR denitration device 640, an induced draft fan 800, a chimney 900, a product negative pressure conveying pipeline 530 and a closed storage and packaging system 500.

[0033] The closed gasification furnace 300 comprises a feeding port 310, a charcoal outlet 320 and a gas outlet 330.

[0034] The negative pressure suction device 100 is connected to the closed square bin 200, the outlet 210 of the closed square bin 200 is connected to the feed inlet 310 of the closed gasification furnace 300 through a conveying device, the carbon outlet 320 of the closed gasification furnace 300 is connected to the closed storage and packaging system 500 through a negative pressure conveying pipeline 530, the fuel gas outlet 330 is connected to the adiabatic combustion furnace 400, the flue gas outlet 410 of the adiabatic combustion furnace 400 is connected to the boiler heat exchange system 610, the boiler heat exchange system comprises a waste heat boiler for flue gas heat exchange and waste heat utilization, the boiler heat exchange system 610 is connected to the dust removal device 700 through an SNCR denitration device 640, an economizer 620 and an air preheater 630, the gas outlet of the dust removal device 700 is connected to the chimney 900 through an induced draft fan 800, and the dust removal device 700 can be a bag-type dust collector. In use, the rice hulls enter the closed square bin 200 through the negative pressure suction device 100, are transported to the closed gasification furnace 300 through the conveying device, are converted into rice hull carbon and combustible gas in the closed gasification furnace 300, the rice hull carbon enters the closed storage and packaging system 500 for packaging, the combustible gas enters the adiabatic combustion furnace 400 through the fuel gas outlet 330, heat is supplied through combustion, the flue gas generated by the adiabatic combustion furnace 400 is subjected to heat utilization through the boiler heat exchange system 610, the economizer 620 and the air preheater 630, is subjected to treatment through the SNCR denitration device 640, is subjected to dust removal through the dust removal device 700 and is discharged to the atmosphere through the chimney 900. The whole system is fully closed, personnel transportation and transfer are avoided, personnel are prevented from being exposed to dust-containing air, and the health of human bodies is harmed. The rice hull carbon and the combustible gas are produced through the closed gasification furnace 300, no solid waste such as furnace ash or furnace slag is generated, no waste water is generated, and environmental pollution is prevented.

[0035] The negative pressure suction device 100 comprises a suction fan 110, a cyclone separator 120, a closing fan 130 and a conveying pipe 140; the cyclone separator 120 is connected with a suction pipe 121; the suction fan 110 comprises an air inlet end 111 and an air outlet end 112, the air inlet end 111 is connected with the cyclone separator 120, the outlet of the cyclone separator 120 is connected with the upper end of the closing fan 130, and the lower end of the closing fan 130 is connected with the conveying pipe 140; the front end of the conveying pipe 140 is connected with the air outlet end 112 of the suction fan 110, and the tail end of the conveying pipe 140 is connected with the closed square warehouse 200. When the material is fed, the suction fan 110 is used to suck air, a negative pressure is formed in the cyclone separator 120, the material is sucked into the cyclone separator 120 through the suction pipe 121, and then the material is discharged into the conveying pipe 140 through the closing fan 130, and then the material is blown into the closed square warehouse 200 through the air outlet of the suction fan 110, and the closing fan 130 can ensure the negative pressure state of the cyclone separator. By sucking the rice husks into the closed square warehouse 200, manual transfer is not needed, the closed square warehouse 200 is ensured to be closed, manual transportation is not needed, dust is avoided, the closed square warehouse 200 is ensured to be closed, the complexity of personnel in the closed square warehouse 200 is prevented, the rice husks are prevented from being mixed into the closed square warehouse 200, and the safety of the system is improved.

[0036] Further, the conveying device comprises a first scraper 220, a bucket elevator 230, a second scraper 240, a pre-furnace hopper 250, a feeding screw conveyor 260 and a first closing fan 270.

[0037] The bottom of the closed square warehouse 200 is provided with a plurality of cones, the lower end of each cone is provided with the outlet 210, the first scraper 220 is provided with a material inlet 221, the material inlet 221 is connected with the outlet 210 of the closed square warehouse, the rear end of the first scraper 220 is connected with the lower end of the bucket elevator 230, the upper end of the bucket elevator 230 is connected with the front end of the second scraper 240, and the rear end of the second scraper 240 is connected with the pre-furnace hopper 250; the lower outlet of the pre-furnace hopper 250 is provided with the feeding screw conveyor 260, the outlet of the feeding screw conveyor 260 is connected with the feeding port 310 of the closed gasification furnace through a pipeline, and the pipeline is provided with the first closing fan 270. During operation, the rice husks are transported to the bucket elevator 230 through the first scraper 220, are upwardly transported through the bucket elevator 230, are then transported into the pre-furnace hopper 250 through the second scraper 240, and are then fed through the feeding screw conveyor 260, so that the feeding of the material is safe and stable, the material is automatically fed, dust is avoided, the workload of workers is reduced, the conveying process is closed, a dust-free working environment is ensured, and dust pollution is avoided.

[0038] Further, the closed gasifier 300 is a closed downdraft gasifier, and the top of the closed gasifier 300 is further provided with a distribution air port 360 connected with a blower 370 for providing air as gas agent into the closed gasifier 300 to supply oxygen for combustion, and the gasification air supply amount is adjusted by load adjustment control of the blower 370 to adjust the air flow to realize combustion control and thus control the gasification intensity, and since the air volume is controlled, the gasifier deflagration phenomenon is reduced, the furnace temperature is stabilized, and the gasification reaction is promoted. The fourth generation of new closed downdraft gasifier greatly reduces the tar content in the produced gas, and the gas quality is good and the gas calorific value is high.

[0039] The bottom of the adiabatic combustion furnace 400 is provided with an ash discharge hopper 420 which is conical, and the lower part of the ash discharge hopper 420 is provided with an ash discharge valve 430. The ash discharge hopper 420 and the ash discharge valve 430 can realize periodic online ash removal without stopping the furnace, and improve the operation cycle and stability of the boiler, and are efficient.

[0040] Further, the closed gasifier 300 and the adiabatic combustion furnace 400 are further provided with a first cyclone separator 340 and a fan 350, the air inlet of the first cyclone separator 340 is connected with the closed gasifier 300, and the gas outlet of the first cyclone separator 340 is connected with the adiabatic combustion furnace 400 through the fan 350. The combustible gas mixed with solid matters such as rice hull carbon dust is removed by the first cyclone separator 340 to ensure high cleanliness of the combustible gas, and the combustible gas can be fully combusted in the adiabatic combustion furnace 400 to avoid the generation of slag or ash and the generation of solid waste.

[0041] Further, the closed square bin 200 is further connected with a pressure relief dust removal bin 270 through a pipeline, and the pressure relief dust removal bin 270 is also a cyclone separator. The pressure balance in the closed square bin 200 is ensured, and the long-term wind into the closed square bin 200 during feeding and conveying is avoided to prevent the pressure in the closed square bin 200 from rising and affecting the discharge of the closed square bin 200, and the pressure balance is ensured to ensure long-term stable operation of the system. Dust is removed by the cyclone separator to avoid dust flying in the workshop, prevent dust pollution, and avoid dust hazards.

[0042] Further, the closed storage packaging system 500 comprises a packaging machine 510, a carbon screw conveyor 520, a product negative pressure conveying pipeline 530, and a second cyclone separator 540. The carbon screw conveyor 520 comprises an inlet end 521 and an outlet end 522. The inlet end 521 of the carbon screw conveyor 520 is connected to the carbon outlet 320 of the closed gasification furnace 300. The outlet end 522 of the carbon screw conveyor 520 is connected to one end of the product negative pressure conveying pipeline 530. The other end of the product negative pressure conveying pipeline 530 is connected to the second cyclone separator 540. A second air lock 531 is arranged on the product negative pressure conveying pipeline 530. The second cyclone separator 540 is connected to the packaging machine 510. A third air lock 560 is arranged between the second cyclone separator 540 and the packaging machine 510. The gas outlet of the second cyclone separator 540 is also connected to a suction fan 550. The produced finished rice hull carbon is conveyed by the carbon screw conveyor 520, enters the product negative pressure conveying pipeline 530, is sucked into the second cyclone separator 540 by the suction fan 550, and is gathered by the second cyclone separator 540. Then, the rice hull carbon enters the packaging machine 510 for automatic packaging. The system is closed, the packaging process does not fall to the ground, avoids the mixing of impurities, has high automation degree, and reduces the workload of workers.

[0043] Further, the carbon screw conveyor 520 is arranged obliquely. The carbon screw conveyor 520 is arranged obliquely upward from the connection with the closed gasification furnace 300. The space is saved, the layout is compact, the transportation is improved by oblique arrangement, the rice hull carbon is smoothly conveyed, the possibility of blockage and stagnation is reduced, and the continuity and stability of conveying are ensured.

[0044] Further, a dust collector 570 is arranged between the second cyclone separator 540 and the suction fan 550. The dust collector 570 is a bag dust collector. The cleanliness of the suction material and the exhaust air of the rice hull carbon product is high. The dust collector 570 can collect the rice hull carbon dust escaping from the second cyclone separator 540, avoids dust pollution, and avoids harming the health of workers.

[0045] Further, the suction pipe 121 is a hose. The hose can be a wear-resistant hose such as a PU wear-resistant hose or a polyurethane hose. The service life of the suction pipe 121 is ensured. The suction position can be adjusted by the hose, the feeding is flexible, and the use is more convenient.

[0046] The working principle of the utility model is: the mode of negative pressure suction of rice hull by negative pressure suction device 100, the rice hull is sent to closed square bin 200, through the opening under closed square bin 200, the first scraper 220 in conveying device, bucket elevator 230, second scraper 240, furnace front hopper 250, feeding screw conveyor 260 are sequentially conveyed to closed gasification furnace 300, gasification cracking reaction occurs, combustible gas and rice hull carbon are produced, after dust removal of combustible gas by first cyclone separator 340, it is combusted and heated into heat supply in adiabatic combustion furnace 400, the flue gas generated is used for waste heat utilization through boiler heat exchange system 610, coal economizer 620 and preheater 630, it is also treated by SCNR denitration device 640 before coal economizer 620, removes nitrogen oxides in flue gas, after dust removal by dust removal device 700, finally after entering chimney 900 after induced draft fan 800, it is discharged.Rice hull carbon is discharged after passing through carbon screw conveying device 520, is automatically sucked into second cyclone separator 540 through product negative pressure conveying pipeline 530, is packed by packing machine 510.

[0047] In conclusion, the utility model is closed conveying in whole process, combustible gas and rice hull carbon are produced by closed gasification furnace 300, at the same time, by-product rice hull carbon is packed and recycled, after full use of flue gas waste heat produced by combustion of combustible gas, it is discharged after dust removal, it is good in economy, no solid waste and waste water are produced, it is green and low-carbon and environmental protection, the problem of high value utilization of rice hull is solved.The utility model is matched by closed gasification furnace 300 and adiabatic combustion furnace 400, so that rice hull gasification is realized, most of the carbon is in rice hull carbon, only a small part of carbon will become combustible gas, carbon dioxide produced by combustion is less, carbon dioxide emission is greatly reduced.

[0048] The utility model discloses a rice hull is directly sucked into closed square bin 200 by negative pressure, the rice hull carbon production port is also directly conveyed to product bin packing by negative pressure, the whole process is not landed and transferred, the whole system is fully closed, ensures dust-free working environment, avoids dust pollution, the closed square bin 200 is closed, avoids the admixture of sundries or open fire, avoids the contact of raw materials and fire to cause fire, is high in safety, is good in economy, no solid waste and waste water are produced, it is green and low-carbon and environmental protection, the problem of high value utilization of rice hull is well solved, agricultural waste is converted into heat energy (fuel gas, steam) and rice hull carbon (steel water heat insulating agent) product, product value is greatly improved, and the problems of low added value of conventional biomass utilization project, dust of warehouse and conveying system, easy to fire and other safety and environmental protection are solved.

[0049] The utility model has been described by the above related embodiments, however, the above embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the utility model. On the contrary, changes and modifications made without departing from the spirit and scope of the utility model are within the scope of patent protection of the utility model.

Claims

1. A whole-process closed rice husk char-gas cogeneration system for heating, characterized in that: The system comprises a negative pressure suction device, a closed square bin, a closed gasification furnace, an adiabatic combustion furnace, a boiler heat exchange system, a dust removal device, an SCNR denitration device, an induced draft fan, a chimney, a product negative pressure conveying pipeline and a closed storage and packaging system. ​ The closed gasification furnace comprises a feeding port, a charcoal outlet and a gas outlet. The negative pressure suction device is connected to the closed square bin, the outlet of the closed square bin is connected to the feeding port of the closed gasification furnace through a conveying device, the charcoal outlet of the closed gasification furnace is connected to the closed storage and packaging system through a negative pressure conveying pipeline, the gas outlet is connected to the adiabatic combustion furnace, the flue gas outlet of the adiabatic combustion furnace is connected to the boiler heat exchange system, the boiler heat exchange system is connected to the dust removal device through an SNCR denitration device, an economizer and an air preheater, and the outlet of the dust removal device is connected to the chimney through the induced draft fan. The negative pressure suction device comprises a suction fan, a cyclone separator, a closing fan and a conveying pipe, the cyclone separator is connected to a suction pipe, the suction fan comprises an air inlet end and an air outlet end, the air inlet end is connected to the cyclone separator, the outlet of the cyclone separator is connected to the upper end of the closing fan, the lower end of the closing fan is connected to the conveying pipe, the front end of the conveying pipe is connected to the air outlet end of the suction fan, and the tail end of the conveying pipe is connected to the closed square bin.

2. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating according to claim 1, wherein: The conveying device comprises a first scraper, an elevator, a second scraper, a furnace front hopper, a feeding screw conveyor and a first closing fan. The bottom of the closed square bin is provided with a plurality of cones, the lower end of each cone is provided with an outlet, the first scraper is provided with a material inlet, the material inlet is connected to the outlet of the closed square bin, the rear end of the first scraper is connected to the lower end of the elevator, the upper end of the elevator is connected to the front end of the second scraper, the rear end of the second scraper is connected to the furnace front hopper, the lower outlet of the furnace front hopper is provided with the feeding screw conveyor, the outlet of the feeding screw conveyor is connected to the feeding port of the closed gasification furnace through a pipeline, and the pipeline is provided with the first closing fan.

3. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating, as claimed in claim 1, wherein: The closed gasification furnace is a closed downdraft gasification furnace, and the top of the closed gasification furnace is further provided with an air distribution port connected to a blower.

4. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating, as claimed in claim 1, wherein: The bottom of the adiabatic combustion furnace is provided with an ash discharge hopper, the ash discharge hopper is conical, and the lower part of the ash discharge hopper is provided with an ash discharge valve.

5. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating, as claimed in claim 1, wherein: A first cyclone separator and a fan are further arranged between the closed gasification furnace and the adiabatic combustion furnace, the closed gasification furnace is connected to the air inlet of the first cyclone separator, the gas outlet of the first cyclone separator is connected to the adiabatic combustion furnace through the fan.

6. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating, as claimed in claim 1, wherein: A pressure relief and dust removal bin is further connected to the closed square bin through a pipeline, and the pressure relief and dust removal bin is also a cyclone separator.

7. The full-process, closed-loop, rice-hull-charcoal and steam co-production system for heating purposes of claim 1, wherein: The closed storage packaging system comprises a packer, a carbon screw conveyor, a product negative pressure conveying pipeline and a second cyclone separator; the carbon screw conveyor comprises an inlet end and an outlet end; the inlet end of the carbon screw conveyor is connected with a carbon outlet of the closed gasification furnace, the outlet end is connected with one end of the product negative pressure conveying pipeline, the other end of the product negative pressure conveying pipeline is connected with the second cyclone separator, a second air lock is arranged on the product negative pressure conveying pipeline, a lower portion of the second cyclone separator is connected with the packer, a third air lock is arranged between the second cyclone separator and the packer, and a gas outlet of the second cyclone separator is further connected with a suction fan.

8. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating according to claim 7, wherein: The carbon screw conveyor is arranged in an inclined manner, and the carbon screw conveyor is arranged in an upward inclined manner from the connection with the closed gasification furnace.

9. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating, as claimed in claim 7, wherein: A dust collector is further arranged between the second cyclone separator and the suction fan.

10. The full-process, closed-loop, rice-hull-charcoal and steam cogeneration system for heating, as claimed in claim 1, wherein: The suction pipe is a hose.

Images