CN110819368A - Harvester loading type double-wing type straw in-situ carbonization and returning device and method - Google Patents
Harvester loading type double-wing type straw in-situ carbonization and returning device and method Download PDFInfo
- Publication number
- CN110819368A CN110819368A CN201911015132.0A CN201911015132A CN110819368A CN 110819368 A CN110819368 A CN 110819368A CN 201911015132 A CN201911015132 A CN 201911015132A CN 110819368 A CN110819368 A CN 110819368A
- Authority
- CN
- China
- Prior art keywords
- pyrolysis
- carbonization
- harvester
- gas
- heat supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a loading type double-wing type straw in-situ carbonization and returning device and a loading type double-wing type straw in-situ carbonization and returning method for a harvester. The method comprises the steps of directly adding straws harvested on site by a harvester into a hopper, enabling the straws to freely fall in a molding connecting channel and respectively fall into pyrolysis carbonization furnaces on two sides of the harvester, providing heat by high-temperature flue gas in a heat supply chamber to carry out pyrolysis carbonization, realizing high-temperature separation of carbon, oil and gas at the tail part of the pyrolysis carbonization furnace, crushing the obtained biochar and then directly returning the crushed biochar to the field, collecting high-quality bio-oil by condensing a pyrolysis gas part, and enabling the other part to enter a combustion chamber for combustion to realize cyclic utilization. High-temperature flue gas generated by mixed combustion of pyrolysis gas and non-condensable gas is pressed into the heat supply chamber to supply heat for subsequent pyrolysis reaction. The device has compact structure, light weight, small size, easy assembly and disassembly, sufficient heating and high treatment efficiency, and can be loaded on a harvester to realize the on-site treatment of the straws.
Description
Technical Field
The invention belongs to the technical field of straw carbonization equipment, and particularly relates to a loading type double-wing type straw in-situ carbonization and returning device and method for a harvester.
Background
Crop straws become a new source of non-point source pollution in rural areas in China, and the straws are burnt in the field to generate a large amount of heavy smoke, so that the crop straws not only become a bottleneck problem of rural environment protection, but also even become the top of the cause of compromising urban environment. The straw treatment problem as agricultural waste has attracted extensive attention, and the realization of straw resource utilization has great significance for promoting the income increase of farmers, environmental protection, resource saving and sustainable development of agricultural economy, and is an inevitable requirement for realizing sustainable development, green development and circular development of agriculture.
For the treatment of the straws, the traditional modes mainly comprise direct burning and straw returning. Wherein, the direct burning of the straw can bring about serious environmental pollution problems. The straw returning influences the growth of crops, the disease and insect pest in the previous season can not be effectively solved, and even the problems of soil fertility damage, heavy metal enrichment and the like are caused. The development of a new straw comprehensive development and utilization technology is urgent, a straw carbonization and returning technology based on the recycling of agricultural and forestry waste resources is established, and soil improvement and carbon sequestration and emission reduction are realized through biological carbon returning, so that economic, social and ecological benefits are obtained, and the method is a green agriculture development way which accords with the national situation.
The biochar formed by carbonizing the straws has stable physicochemical property and strong biological decomposition resistance, has the function of carbon sequestration, can be returned to the field for soil improvement, adsorbs and reduces the enrichment of heavy metal ions such as Cd, Pb, Cu and the like, and reduces the biological effectiveness of pollutants. The biochar has rich micro pore structure, large specific surface area and rich surface functional groups, can reduce the volume weight of soil, promote the formation of soil polymer micro-groups, improve the soil structure and the conditions of water, fertilizer, gas and heat, and can provide a place for promoting the proliferation of microbial communities after being returned to the soil. Meanwhile, the biochar can enhance soil ion exchange, improve the utilization rate of the fertilizer, reduce nutrient leaching loss and the like. In addition, the biochar contains macroelements and medium-trace elements necessary for plant growth, and supplements the growth of crops, thereby reducing the input of chemical fertilizers. In a word, compared with the traditional straw treatment mode, the carbonized straws are used as a soil conditioner to return soil, the physical and chemical properties of the soil and the micro-ecological environment of the soil can be effectively improved, the polluted soil is repaired, the soil production capacity is improved, the crop yield and quality are improved, meanwhile, secondary pollution is not generated, the carbonized straws are used for agriculture, and the sustainable development, the green development and the circular development of agriculture can be realized.
At present, the straw carbonization and field returning technology is developed to a certain extent, but the equipment and the process for carbonizing the straws still have a plurality of defects. At present, main straw carbonization equipment mainly comprises a rotary kiln, a fixed bed and the like, the devices are generally complex in structure, are immovable fixing devices, need centralized treatment and are difficult to realize in-situ carbonization and returning to fields. Some straws have high humidity and are not dispersed and concentrated, so that the straws are difficult to store, transport and return to the field again. In addition, the traditional carbonization device often has the problems of incapability of continuous production, incapability of realizing anaerobic heating, incapability of controlling temperature, incapability of effectively treating waste gas and polluting environment and the like. Therefore, it is important to develop a light, small and mobile device capable of on-site straw carbonization and returning to the field.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a loading type double-wing type straw in-situ carbonization and field-returning device and a loading type double-wing type straw in-situ carbonization and field-returning method for a harvester.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a loading type double-wing type straw in-situ carbonization and returning device of a harvester, which comprises a material system, a pyrolysis and carbonization reaction system, a circulating heat supply system and a product collection system. The feed system comprises: the hopper and the molding connecting channel are connected in sequence;
the pyrolysis carbonization system is in a bent knife shape and comprises a hollow pyrolysis carbonization furnace, heat exchange fins welded on the outer wall of the pyrolysis carbonization furnace, a crushing kick-out device extending into the pyrolysis carbonization furnace, a heat supply chamber surrounding the outer wall of the pyrolysis carbonization furnace, a tail gas outlet, a high-temperature flue gas inlet, a pyrolysis gas outlet and a pyrolysis material discharge hole; wherein, the upper part of the heat supply chamber is connected with a tail gas outlet, and the lower part of the heat supply chamber is connected with a high-temperature flue gas inlet; the upper end of the pyrolysis carbonization furnace is connected with the plastic connecting channel, and the lower end of the pyrolysis carbonization furnace is connected with the biochar discharge port and the pyrolysis gas outlet;
the circulating heat supply system comprises a dividing wall type deep cooler, a fan, a combustion chamber, a blower, a liquefied petroleum gas cylinder, a pyrolysis gas inlet, a non-condensing gas inlet, a liquefied petroleum gas inlet, an air inlet and a high-temperature flue gas outlet; the pyrolysis gas outlet at the lower end of the pyrolysis carbonization furnace is connected with the inlet of the dividing wall type deep cooler and the pyrolysis gas inlet of the combustion chamber, the outlet of the dividing wall type deep cooler is connected with the non-condensing gas inlet of the combustion chamber through a fan, and the combustion chamber is connected with a blower through an air inlet; is connected with a liquefied petroleum gas cylinder through a liquefied petroleum gas inlet; the high-temperature flue gas outlet is connected with a high-temperature flue gas inlet at the lower end of the heat supply chamber;
the product collecting system comprises a charcoal pulverizer, a charcoal storage bin and an oil storage tank; wherein the discharge port of the pyrolysis carbonization furnace is connected with a charcoal pulverizer and a charcoal storage bin; the dividing wall type deep cooler is connected with the oil storage tank. The charcoal pulverizer is of a propeller type structure.
Preferably, charge-in system (I) moulding interface channel (2) have, moulding interface channel (2) be circular plastic shaping plastic tubing, can change length and inclination according to the harvester appearance, nimble loading in harvester both sides to connect feeder hopper (1) and pyrolysis carbonization reactor.
Preferably, the pyrolysis carbonization reaction system is of a bent blade-shaped inner and outer sleeve type structure, the inner cylinder is a pyrolysis carbonization furnace, and the outer cylinder is a heat supply chamber. The pyrolysis carbonization system (II) consists of a vertical section, an arc section and an inclined straight section, the overall height can be selected from 2.4-3.6 m according to the actual height of the harvester, wherein the length of the vertical section is half of the overall height, the radian of the arc section is pi/3, the inclined straight section is as long as the vertical section, and the inclination is 30 degrees from the horizontal.
Preferably, the outer wall of the pyrolysis carbonization furnace is welded with heat exchange fins, and a high-temperature flue gas channel is formed in the heat supply chamber; the pyrolysis carbonization furnace is connected with a plurality of crushing kickers for mixing and crushing materials and enhancing heat exchange. The outer wall of the pyrolysis carbonization furnace (3) is welded with heat exchange fins (4), and a high-temperature flue gas channel is formed in the heat supply chamber (6); the pyrolysis carbonization furnace (3) is internally provided with a plurality of crushing kickoff devices (5), each crushing kickoff device (5) is of a propeller type structure and consists of four blades, and the tail ends of the blades are connected with hook teeth to force materials to move along the axial direction so as to mix and crush the materials and strengthen heat exchange.
Preferably, high-temperature oil gas generated by straw pyrolysis is introduced into the inner wall of the wall-type deep cooler, and a refrigerant is introduced outside the dividing wall.
Preferably, the outlet of the dividing wall type deep cooler is connected with the inlet of pyrolysis gas of the combustion chamber through a fan, and the power of the fan is regulated and controlled by the combustion temperature in the combustion chamber.
Preferably, the inlet of the combustion chamber is connected with a pyrolysis gas outlet of the pyrolysis carbonization furnace, a non-condensing gas outlet of the dividing wall type deep cooler, a blower and a liquefied petroleum gas cylinder, and the outlet is connected with the heat supply chamber.
The invention also provides a method for in-situ carbonization and returning of straws, which comprises the following specific steps:
(1) in the feeding system, straws harvested by the harvester on the spot do not need to be crushed, and the straws are directly fed into the device from the top hopper, fall into the reactors on two sides of the harvester in the molding connecting channel respectively, and fall into the pyrolysis carbonization furnace for pyrolysis and carbonization.
(2) In the pyrolysis carbonization reaction system, materials in a pyrolysis carbonization furnace are mixed and crushed by a crushing kick-out device and are stirred downwards, and heat is supplied by high-temperature flue gas entering a heat supply chamber from a flue gas inlet under normal pressure to carry out pyrolysis carbonization; after pyrolysis, the tail part of the pyrolysis carbonization furnace realizes high-temperature separation of carbon, oil and gas, high-temperature oil gas is introduced into a circulating heat supply system from a pyrolysis gas outlet, and the biochar is connected with a carbon storage bin through a biochar discharge port.
(3) The circulating heat supply system (in the circulating heat supply system, part of high-temperature oil gas generated by pyrolysis in a pyrolysis carbonization furnace is introduced into a dividing wall type deep cooler for condensation, the other part of high-temperature oil gas and condensed non-condensable gas enter a combustion chamber together, and are mixed and combusted with air blown in from an air inlet, the amount of the oil gas entering the dividing wall type deep cooler for condensation is intelligently regulated and controlled according to the heat value requirement of the combustion chamber, the air suction power of a fan is controlled, high-temperature flue gas obtained by combustion in the combustion chamber is pressed into a flue gas inlet at the lower part of a heat supply chamber from a flue gas outlet to supply heat for subsequent pyrolysis, and finally the high-temperature.
(4) In the product collection system, the carbon generated by pyrolysis is crushed by a charcoal crusher, and the obtained charcoal powder is stored in a charcoal storage bin and is directly returned to the field or used for other purposes after being modified; and collecting the high-quality bio-oil generated after the condensation of the dividing wall type deep cooler in the oil storage tank.
Preferably, in the step (2), the straw material is directly added into the reactor without being crushed, mixed and crushed by a crushing and stirring device in the pyrolysis carbonization furnace, and stirred downwards, so that the material flows downwards in the pyrolysis carbonization process and heat exchange is enhanced; the reactor strengthens the heat transfer through the heat transfer fin, and after the material got into the reactor, the first half section was mainly by high temperature radiation heat supply, and the heat supply is strengthened by the heat conduction in the latter half section, and the pyrolysis product realizes the separation of charcoal, oil high temperature at pyrolysis retort bottom.
Preferably, in the step (3), the combustion chamber realizes initial ignition through liquefied petroleum gas, part of the pyrolysis gas and non-condensable gas are mixed with air for combustion, the condensation amount of the pyrolysis gas is optimally matched with the heat value requirement in the combustion chamber, and the air suction power of the fan is controlled; the fan and the blower are in proper wind pressure ratio, high-temperature flue gas obtained by combustion is pressed into the heat supply chamber from the flue gas outlet, and continuous operation of the device, cyclic utilization of residual gas and oil-carbon co-production are ensured.
Preferably, in the step (2), the pyrolysis temperature is 500-700 ℃, and the pyrolysis pressure is normal pressure.
Has the advantages that: compared with the prior art, the loading type double-wing type straw in-situ carbonization and returning device and the loading type double-wing type straw in-situ carbonization and returning method for the harvester have the following beneficial effects:
1. the device realizes miniaturization, lightening, compacting and shaping, can be flexibly loaded on two sides of the harvester according to the appearance of the harvester, and can process the straws on the spot when harvesting crops in the field;
2. in the device, straw materials are directly added into the reactor without being crushed, and are crushed by the crushing kick-out device and then are pyrolyzed in the feeding process.
3. The device enhances heat exchange, the pyrolysis reactor is of an inner sleeve type and an outer sleeve type, materials and high-temperature flue gas are transported oppositely, the heat transfer efficiency is improved, the bent knife-shaped reactor ensures that sufficient heat exchange time exists between the inner sleeve and the outer sleeve when the pyrolysis reactor continuously operates, and fins on the outer wall of the pyrolysis chamber form a high-temperature flue gas channel, so that the heat exchange is sufficient, the pyrolysis efficiency is improved, and the straws are completely carbonized;
4. in the device, the front half section of the straw material is mainly heated by high-temperature radiation, the rear half section of the straw material is enhanced by heat conduction to supply heat, the high-temperature separation of carbon and oil products is realized at the bottom of the pyrolysis carbonization furnace through the gas pressure of pyrolysis gas, and the pyrolysis gas is returned to the combustion chamber for combustion, so that heat is supplied, and energy is saved;
5. the device realizes the connection of all systems through proper wind pressure proportion, avoids the participation of air in pyrolysis reaction, and simultaneously intelligently regulates and controls the optimized proportion of the oil gas quantity fed into the pyrolysis chamber for combustion and the oil gas quantity fed into the condensing device;
6. the device of the invention processes straws to finally realize the coproduction of oil and carbon, the obtained charcoal powder can be directly returned to the field or used as other ways after being modified, and the obtained bio-oil can be mixed with diesel oil after being upgraded, thereby saving energy or being used for other purposes.
Drawings
FIG. 1 is a schematic structural view of a device for in-situ carbonization and returning of straws loaded by a cutting machine.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the loading type double-wing type straw in-situ carbonization and returning device for the harvester comprises a feeding system (I) and a pyrolysis reactor, wherein the feeding system (I) is used for shaping the device, loading the device according to the shape of the harvester and feeding the straws into the pyrolysis reactor; the pyrolysis and carbonization reaction system (II) is used for receiving the straw material, supplying heat through combustion, and carbonizing the material at high temperature to obtain biochar, pyrolysis gas and high-temperature flue gas; the circulating heat supply system (III) is used for treating the high-temperature oil gas product of the pyrolysis carbonization reaction system (II), partially condensing pyrolysis gas to obtain bio-oil, and introducing the other part of non-condensable gas into the combustion chamber for combustion to supply heat for the subsequent pyrolysis reaction; the product collecting system (IV) is used for collecting the solid product charcoal powder of the pyrolysis carbonization reaction system (II) and the bio-oil obtained by the circulating heat supply system (III);
specifically, the pretreatment feeding system (I) comprises a hopper 1 and a molding connecting channel 2.
The pyrolysis carbonization system (II) is in a bent knife shape and comprises a hollow pyrolysis carbonization furnace 3, heat exchange fins 4 welded on the outer wall of the pyrolysis carbonization furnace, a crushing kick-out device 5 extending into the pyrolysis carbonization furnace, a heat supply chamber 6 surrounding the outer wall of the pyrolysis carbonization furnace, a tail gas outlet ①, a high-temperature flue gas inlet ②, a pyrolysis gas outlet ③ and a pyrolysis material discharge port, wherein the upper part of the heat supply chamber 6 is connected with the tail gas outlet ①, the lower part of the heat supply chamber is connected with the high-temperature flue gas inlet ②, the upper end of the pyrolysis carbonization furnace 3 is connected with a molding connecting channel (2), and the lower end of the pyrolysis carbonization furnace 3 is connected with a biochar discharge port and the pyrolysis gas outlet 36;
the circulating heat supply system (III) comprises a dividing wall type deep cooler 7, a fan 8, a combustion chamber 9, a blower 10, a liquefied petroleum gas cylinder 11, a pyrolysis gas inlet ④, a non-condensing gas inlet ⑤, an air inlet ⑥, a liquefied petroleum gas inlet ⑦ and a high-temperature flue gas outlet ⑤, wherein a pyrolysis gas outlet ③ at the lower end of the pyrolysis carbonization furnace 3 is connected with a pyrolysis gas inlet of the dividing wall type deep cooler 7 and a pyrolysis gas inlet ④ of the combustion chamber 9, a non-condensing gas outlet of the dividing wall type deep cooler 7 is connected with a non-condensing gas inlet ⑤ of the combustion chamber 9 through the fan 8, the combustion chamber 9 is connected with the blower 10 through an air inlet ⑥, is connected with the liquefied petroleum gas cylinder 11 through a liquefied petroleum gas inlet ⑦, and is connected with a high-temperature flue gas inlet ⑤ at the lower end of the heat supply chamber 6 through a high-temperature;
the product collecting system (IV) comprises a charcoal pulverizer 12, a charcoal storage bin 13 and an oil storage tank 14; wherein the discharge hole of the pyrolysis carbonization furnace 3 is connected with a charcoal pulverizer 12 and a charcoal storage bin 13; the liquid product outlet of the dividing wall type deep cooler 7 is connected with an oil storage tank 14;
the invention relates to a method for in-situ carbonization and returning of straws by using the device, which specifically comprises the following steps:
(1) the straws harvested on the spot by the harvester do not need to be crushed, and the straws are directly added into the device from the top hopper 1, fall into the reactors on the two sides of the harvester respectively in the molding connecting channel 2, and fall into the pyrolysis carbonization furnace 3 for pyrolysis and carbonization.
(2) The materials in the pyrolysis carbonization furnace 3 are mixed and crushed by the crushing and stirring device 5, stirred downwards, supplied with heat by high-temperature flue gas entering the heat supply chamber 6 from a flue gas inlet under normal pressure, and pyrolyzed and carbonized, after pyrolysis is finished, the tail part of the pyrolysis carbonization furnace 3 realizes high-temperature separation of carbon, oil and gas, high-temperature oil gas is introduced into a circulating heat supply system through a pyrolysis gas outlet ③, and biochar is connected with a carbon storage bin through a biochar discharge hole.
(3) High-temperature oil gas generated by pyrolysis in the pyrolysis carbonization furnace 3 is partially introduced into the dividing wall type deep cooler 7 for condensation, the other part of the high-temperature oil gas and condensed non-condensable gas enter the combustion chamber 9 together, the condensed oil gas and the condensed non-condensable gas are mixed and combusted with air blown in from the air inlet ⑥, the amount of the oil gas entering the dividing wall type deep cooler 7 for condensation is intelligently regulated and controlled according to the heat value requirement in the combustion chamber 9 and is controlled by the air extraction power of the fan 8, high-temperature flue gas obtained by combustion in the combustion chamber 9 is pressed into the flue gas inlet ② at the lower part of the heat supply chamber 6 from the flue gas outlet ⑧ to supply heat for subsequent pyrolysis, and finally the high-temperature flue.
(4) The charcoal generated by pyrolysis is crushed by a charcoal crusher 12, and the obtained charcoal powder is stored in a charcoal storage bin 13 and is directly returned to the field or used for other purposes after being modified; the high-quality bio-oil generated after the condensation of the dividing wall type deep cooler 7 is collected in the oil storage tank 14.
The method reduces the single barrel treatment capacity of the medium-sized experimental device to 40kg/h in equal proportion, and the estimated straw treatment capacity of the equal-proportion amplification device is 800kg/h and meets the requirement of 5000hm2The harvester assembly requirement of the operation productivity per hour can achieve the effect of in-situ carbonization and returning of the straws。
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a harvester loading formula double wing straw is carbomorphism field device on spot which characterized in that: comprises a pretreatment feeding system (I), a pyrolysis carbonization system (II), a circulating heat supply system (III) and a product collecting system (IV);
the pretreatment feeding system (I) comprises: the hopper (1) and the molding connecting channel (2) are connected in sequence, and the molding connecting channel (2) is in an inverted Y shape;
the pyrolysis carbonization system (II) is of a bent blade-shaped inner-outer sleeve type structure, the inner cylinder is a pyrolysis carbonization furnace (3), the outer cylinder is a heat supply chamber (6) and comprises a hollow pyrolysis carbonization furnace (3), a heat exchange fin (4) welded on the outer wall of the pyrolysis carbonization furnace, a crushing material poking device (5) extending into the pyrolysis carbonization furnace, a heat supply chamber (6) surrounding the outer wall of the pyrolysis carbonization furnace, a tail gas outlet, a high-temperature flue gas inlet, a pyrolysis gas outlet and a pyrolysis material discharge port; wherein the upper part of the heat supply chamber (6) is connected with a tail gas outlet, and the lower part is connected with a high-temperature flue gas inlet; the upper end of the pyrolysis carbonization furnace (3) is connected with the plastic connecting channel (2), and the lower end is connected with the biochar discharge port and the pyrolysis gas outlet;
the circulating heat supply system (III) comprises a dividing wall type deep cooler (7), a fan (8), a combustion chamber (9), a blower (10), a liquefied petroleum gas cylinder (11), a pyrolysis gas inlet, a non-condensing gas inlet, a liquefied petroleum gas inlet, an air inlet and a high-temperature flue gas outlet; wherein a pyrolysis gas outlet at the lower end of the pyrolysis carbonization furnace (3) is connected with an inlet of the dividing wall type deep cooler (7) and a pyrolysis gas inlet of the combustion chamber (9), and a non-condensing gas outlet of the dividing wall type deep cooler (7) is connected with a non-condensing gas inlet of the combustion chamber (9) through a fan (8); the combustion chamber (9) is connected with a blower (10) through an air inlet, is connected with a liquefied petroleum gas cylinder (11) through a liquefied petroleum gas inlet, and is connected with a high-temperature flue gas inlet at the lower end of the heat supply chamber (6) through a high-temperature flue gas outlet;
the product collecting system (IV) comprises a charcoal pulverizer (12), a charcoal storage bin (13) and an oil storage tank (14); wherein the discharge hole of the pyrolysis carbonization furnace (3) is connected with a charcoal pulverizer (12) and a charcoal storage bin (13); the liquid product outlet of the dividing wall type deep cooler (7) is connected with an oil storage tank (14).
2. The harvester-loading double-wing type straw in-situ carbonization and returning device as claimed in claim 1, wherein: the feeding system (I) is provided with a shaping connecting channel (2), the shaping connecting channel (2) is a round plastic pipe which can be shaped, changes the length and the inclination angle according to the appearance of the harvester, is loaded on two sides of the harvester and is connected with a feeding hopper (1) and a pyrolysis carbonization reactor.
3. The harvester-loading double-wing type straw in-situ carbonization and returning device as claimed in claim 1, wherein: the pyrolysis carbonization system (II) consists of a vertical section, an arc section and an inclined straight section, the overall height can be selected from 2.4-3.6 m according to the actual height of the harvester, wherein the length of the vertical section is half of the overall height, the radian of the arc section is pi/3, the inclined straight section is as long as the vertical section, and the inclination is 30 degrees of included angle with the horizontal plane.
4. The harvester-loading double-wing type straw in-situ carbonization and returning device as claimed in claim 1, wherein: in the pyrolysis carbonization reaction system (II), the outer wall of the pyrolysis carbonization furnace (3) is welded with heat exchange fins (4), and a high-temperature flue gas channel is formed in a heat supply chamber (6); the pyrolysis carbonization furnace (3) is internally provided with a plurality of crushing kickoff devices (5), each crushing kickoff device (5) is of a propeller type structure and consists of four blades, and the tail ends of the blades are connected with hook teeth to force materials to move along the axial direction so as to mix and crush the materials and strengthen heat exchange.
5. The harvester-loading double-wing type straw in-situ carbonization and returning device as claimed in claim 1, wherein: the charcoal pulverizer is of a propeller type structure.
6. The harvester-loading double-wing type straw in-situ carbonization and returning device as claimed in claim 1, wherein: in the circulating heat supply system (III), high-temperature oil gas generated by straw pyrolysis is introduced into the inner wall of the wall-type deep cooler (7), and a refrigerant is introduced outside the dividing wall; the non-condensing gas outlet of the dividing wall type deep cooler (7) is connected with the non-condensing gas inlet of the combustion chamber (9) through a fan (8), and the power of the fan (8) is regulated and controlled by the combustion temperature in the combustion chamber (9).
7. The method for in-situ carbonization and returning of the straws by using the loading type double-wing type device for in-situ carbonization and returning of the straws of the harvester as claimed in any one of claims 1 to 6 is characterized in that: the method comprises the following steps:
(1) in the feeding system (I), straws harvested by the harvester on the spot are not required to be crushed, and are directly added into the device from the top hopper (1), fall into reactors on two sides of the harvester in the molding connecting channel (2) respectively, and fall into the pyrolysis carbonization furnace (3) for pyrolysis and carbonization;
(2) in the pyrolysis carbonization reaction system (II), materials in the pyrolysis carbonization furnace (3) are mixed and crushed by a crushing kick-out device (5), and are stirred downwards, and heat is supplied by high-temperature flue gas entering a heat supply chamber (6) from a flue gas inlet under normal pressure to carry out pyrolysis carbonization; after pyrolysis is finished, high-temperature separation of carbon, oil and gas is realized at the tail part of the pyrolysis carbonization furnace (3), high-temperature oil gas is introduced into a circulating heat supply system (III) from a pyrolysis gas outlet, and the biochar is connected with a carbon storage bin through a biochar discharge hole;
(3) in the circulating heat supply system (III), part of high-temperature oil gas generated by pyrolysis in the pyrolysis carbonization furnace (3) is introduced into the dividing wall type deep cooler (7) for condensation, and the other part of high-temperature oil gas and condensed non-condensed gas enter the combustion chamber (9) together and are mixed with air blown in from an air inlet for combustion; high-temperature flue gas obtained by combustion in the combustion chamber (9) is pressed into a flue gas inlet at the lower part of the heat supply chamber (6) from a flue gas outlet to supply heat for subsequent pyrolysis, and is finally discharged from a tail gas outlet at the upper part of the heat supply chamber (6);
(4) in the product collection system (IV), the carbon generated by pyrolysis is crushed by a charcoal crusher (12), and the obtained charcoal powder is stored in a charcoal storage bin (13) and is directly returned to the field or modified for other purposes; and collecting the liquid product bio-oil generated after the dividing wall type deep cooler (7) is condensed in an oil storage tank (14).
8. The method for in-situ carbonization and returning of straws as claimed in claim 7, which is characterized in that: in the step (2), straw materials are directly added into the reactor without being crushed, and are mixed and crushed by a crushing and stirring device (5) in a pyrolysis carbonization furnace (3) and stirred downwards, so that the materials flow downwards in the pyrolysis carbonization process and the heat exchange is enhanced; the reactor strengthens the heat exchange through the heat exchange fins (4), after the material enters the reactor, the front half section mainly supplies heat through high-temperature radiation, the rear half section strengthens the heat supply through heat conduction, and the pyrolysis product realizes the high-temperature separation of carbon and oil at the bottom of the pyrolysis carbonization furnace (3).
9. The method for in-situ carbonization and returning of straws as claimed in claim 7, which is characterized in that: in the step (3), the combustion chamber (9) is initially ignited by liquefied petroleum gas, part of the pyrolysis gas and non-condensable gas are mixed with air to be combusted, the condensation amount of the pyrolysis gas is optimally matched with the heat value requirement in the combustion chamber (9), and the air extraction power of the fan (8) is controlled; the fan (8) and the air blower (10) press high-temperature flue gas obtained by combustion into the heat supply chamber (6) from the flue gas outlet through proper air pressure proportion, and continuous operation of the device, cyclic utilization of residual gas and oil-carbon co-production are ensured.
10. The method for in-situ carbonization and returning of straws as claimed in claim 7, which is characterized in that: in the step (2), the pyrolysis temperature is 500-700 ℃, and the pyrolysis pressure is normal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911015132.0A CN110819368B (en) | 2019-10-24 | 2019-10-24 | Harvester loading type double-wing type straw in-situ carbonization and returning device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911015132.0A CN110819368B (en) | 2019-10-24 | 2019-10-24 | Harvester loading type double-wing type straw in-situ carbonization and returning device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110819368A true CN110819368A (en) | 2020-02-21 |
| CN110819368B CN110819368B (en) | 2021-07-27 |
Family
ID=69550346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911015132.0A Active CN110819368B (en) | 2019-10-24 | 2019-10-24 | Harvester loading type double-wing type straw in-situ carbonization and returning device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110819368B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463258A (en) * | 2009-01-09 | 2009-06-24 | 北京博奇电力科技有限公司 | Biomass rapid thermal cracking reactor |
| CN104611085A (en) * | 2015-01-28 | 2015-05-13 | 宣城市兴鸿生物能源有限公司 | Comprehensive straw processing all-in-one machine |
| CN107267175A (en) * | 2017-07-04 | 2017-10-20 | 浙江大学 | Gas circulating type agricultural crop straw decomposing machine |
| CA3036154A1 (en) * | 2016-09-12 | 2018-03-15 | Izun Pharmaceuticals Corp. | Plant matter smoke and vapor collection device |
| CN107892931A (en) * | 2017-11-10 | 2018-04-10 | 东南大学 | The apparatus and method that portable pyrolysis prepares charcoal |
| CN107964405A (en) * | 2017-11-07 | 2018-04-27 | 华中科技大学 | A kind of spiral charging pyrolysis oven of gradual-enlargement type for being integrated in vertical well gas flue after pulverized-coal fired boiler |
-
2019
- 2019-10-24 CN CN201911015132.0A patent/CN110819368B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463258A (en) * | 2009-01-09 | 2009-06-24 | 北京博奇电力科技有限公司 | Biomass rapid thermal cracking reactor |
| CN104611085A (en) * | 2015-01-28 | 2015-05-13 | 宣城市兴鸿生物能源有限公司 | Comprehensive straw processing all-in-one machine |
| CA3036154A1 (en) * | 2016-09-12 | 2018-03-15 | Izun Pharmaceuticals Corp. | Plant matter smoke and vapor collection device |
| CN107267175A (en) * | 2017-07-04 | 2017-10-20 | 浙江大学 | Gas circulating type agricultural crop straw decomposing machine |
| CN107964405A (en) * | 2017-11-07 | 2018-04-27 | 华中科技大学 | A kind of spiral charging pyrolysis oven of gradual-enlargement type for being integrated in vertical well gas flue after pulverized-coal fired boiler |
| CN107892931A (en) * | 2017-11-10 | 2018-04-10 | 东南大学 | The apparatus and method that portable pyrolysis prepares charcoal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110819368B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103343026B (en) | Process method and process system for preparing solid fuel through biomass and sludge | |
| CN104150987A (en) | Resource utilization method of livestock and poultry breeding wastes | |
| CN210419701U (en) | Straw and sludge coprocessing device | |
| WO2022057843A1 (en) | Mobile straw torrefaction and carbonization treatment in-situ returning method and device | |
| CN110407191A (en) | A method of straw biological charcoal is prepared using hydrothermal carbonization | |
| CN103333701A (en) | Smoke-reuse internal heat type biomass carbonization furnace | |
| CN105710114A (en) | Carbonization circulation overall treatment system and method for household refuse and forestry and agricultural residues | |
| CN216521686U (en) | Industrial treatment device for kitchen garbage | |
| CN205701817U (en) | One way of life rubbish and agriculture and forestry organic waste material carbonization circulation comprehensive processing system | |
| CN103773404B (en) | A kind of Combined type multiplex produces material fast charring equipment and its carbonizing method | |
| CN109456781B (en) | Integrated device and method for carbon/oil/gas co-production | |
| CN214457774U (en) | Movable agriculture and forestry straw microwave-assisted fast pyrolysis poly-generation device | |
| CN210035473U (en) | Biomass burner and low-cost pig manure treatment system | |
| CN110819368B (en) | Harvester loading type double-wing type straw in-situ carbonization and returning device and method | |
| CN110006033B (en) | Biomass burner and pig manure low-cost treatment system | |
| CN201006869Y (en) | Inclined slope tube-type device for producing gas using ecological waste material | |
| CN206669715U (en) | A kind of upper-burning biomass vegetable booth thermal insulation stove | |
| CN109957410A (en) | A kind of biomass pyrolytic reaction unit and pyrolysis system | |
| CN210030576U (en) | Biomass pyrolysis reaction device and pyrolysis system | |
| CN206298521U (en) | High-valued stalk develops multifunctional fertilizers fermenting device | |
| CN102504844B (en) | Pyrolysis equipment of biomass waste resource pyrolysis carbonization comprehensive conversion system | |
| CN208266080U (en) | A kind of livestock and poultry dung recovery processing unit | |
| CN207891282U (en) | A kind of system preparing oil, gas and charcoal base manure using agricultural-forestry biomass Poly-generation | |
| CN113430012A (en) | Organic solid waste recycling method | |
| CN205473578U (en) | Carbomorphism system is retrieved to living beings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |