CN113339805A

CN113339805A - Movable unpowered straw pyrolysis, gasification and incineration treatment device for field

Info

Publication number: CN113339805A
Application number: CN202110376680.7A
Authority: CN
Inventors: 孙吉林; 孙吉武; 孙广伟
Original assignee: Liaoning Zhongnong Edward Environmental Technology Co ltd
Current assignee: Liaoning Zhongnong Edward Environmental Technology Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-09-03

Abstract

The invention discloses a field movable unpowered straw pyrolysis, gasification and incineration treatment device, and relates to the technical field of straw treatment devices. The treatment device comprises an incineration device, a trailer, a dry purifier, a waste gas discharge pipe and a quick landing gear, wherein the incineration device is fixed on a bottom plate of the trailer, the dry purifier is connected to the rear part of the top of the incineration device through a rotating shaft, the waste gas discharge pipe is arranged at the top of the dry purifier, the quick landing gear is provided with three fulcrums and is respectively fixed on the upper part of the waste gas discharge pipe, the joint of the top of the incineration device and the dry purifier and the rear side wall of the incineration device. The device has the functions of safely moving and passing in the field of roads, unpowered matching, gasifying materials without crushing, forcing air supply, quick rising and falling of a waste gas discharge pipe, pyrolysis and gasification of straws to produce gas, direct secondary gasification and incineration of fuel gas and dry (anhydrous) purification of waste gas.

Description

Movable unpowered straw pyrolysis, gasification and incineration treatment device for field

Technical Field

The invention relates to the technical field of straw treatment devices, in particular to a field movable unpowered straw pyrolysis, gasification and incineration treatment device.

Background

The utilization of the straw cultivation feed is replaced by the highland barley feed along with the scale development of rural cultivation industry, and mature straws are basically not adopted.

The straw crushing and returning technology is a yield increasing measure for fertilizing soil, and has the functions of increasing fertilizer and increasing yield while avoiding atmospheric pollution caused by straw burning. The straw crushing and returning can increase soil organic matters, improve the soil structure, loosen the soil, increase the porosity, reduce the capacity and promote the activity of microorganisms and the development of crop roots. However, most rural areas in China are mountainous areas, belong to sandy soil, are not suitable for technical conditions of crushing and returning to fields, are long in winter in the north and short in deep-buried time in the south, and straws returned to the fields do not have rotting and degrading conditions, so that adverse phenomena such as increase of soil germs, increase of crop diseases, seedling shortage (seedling) and the like can be caused. Therefore, the straw returning is greatly influenced by soil quality, environment and climate, and most of areas are not suitable for the straw crushing and returning treatment method.

The straw gasification centralized gas supply is a novel straw recycling treatment technology. The fuel gas is prepared by the straw pyrolysis gasification technology, and is used as a domestic production energy source for surrounding residents, so that the raw energy sources such as raw coal, new firewood and the like are replaced, and energy conservation and emission reduction are realized. However, in the technology, the straw collection, transportation, pretreatment and construction investment costs are high, the straw treatment capacity is limited by the gas utilization capacity of residents, the straw treatment capacity is small, the gas manufacturing cost is high, the project operation and maintenance cost is also high, the operation profit of an operation enterprise is low, and continuous operation is difficult without the support of national subsidy policies.

The straw burning power generation technology is also a straw recycling treatment technology. The straws are bundled while being harvested by the harvester, and then are transported to a straw burning power plant for power generation, and the power is connected to the Internet in a national power grid. It also has the problems of high collection, bundling, transportation, pretreatment, construction investment costs, etc., and the project is not suitable for remote areas with small land pieces and low production. Because the project operation cost is higher, the operation is carried out by depending on the state subsidy.

The regenerated particle technology is also a straw recycling treatment technology, and the straws are transported into a factory after being collected, and then are made into high-density biomass particles to replace raw coal through technological processes of crushing, drying, compact forming and the like, so that the high-density biomass particles are used as industrial boiler fuel. Because the collection and transportation costs are high, the energy consumption is high in the processing process, the manufacturing cost of the product is high, compared with fossil energy, the manufacturing cost is high, and the market is provided only by the state for subsidy.

The straw gasification centralized gas supply is a novel straw recycling treatment technology, fuel gas is prepared by the straw pyrolysis gasification technology, and the fuel gas is delivered to surrounding residents through an underground transmission and distribution system to be used as a life and production energy source to replace raw energy sources such as raw coal and new firewood. However, in the technology, the cost for collecting, transporting, crushing and storing the straws is high, the project construction investment cost is also high, the straw treatment capacity is limited by the gas consumption capacity of residents, the treatment capacity is small, the gas manufacturing cost is high, and the project operation and maintenance cost is also high. The technology also needs a large amount of electricity and water energy sources, and particularly generates partial tar and sewage when the fuel gas is purified by using water. The treatment of tar and waste water can be put into related technical equipment in a matched way, and the investment and operation cost of the project are increased.

The straw gasification furnace is the core technical equipment of the straw gasification centralized gas supply project. The straw gasification furnace has two types, namely a fixed bed and a fluidized bed. The fluidized bed is generally called a fluidized bed, which uses sand as a fluidizing medium, and is blown in from the bottom of a furnace, and the sand and materials float like liquid boiling due to the movement of the sand and the materials caused by the strong upward-flowing gas flow. The fluidized bed gasification furnace is suitable for biomass raw materials with large moisture content, low heat value and difficult ignition, but the materials need to be crushed, a large-flow blower, sand and the like are needed, and the fluidized bed gasification furnace is not suitable for field operation conditions.

By fixed bed is meant that the material is in a quiescent state with respect to the gas flow as it passes through the layer of material, hence the term fixed bed. The fixed bed is suitable for materials which are small blocky and large-particle raw materials. However, if the material is too large or too small, the internal process is difficult to control, it is liable to bridge to form a cavity, and the throughput is small. Common fixed bed gasification furnaces are divided into an updraft type and a downdraft type according to the direction of air flow movement in the furnace. The updraft type gasifier is characterized in that materials are added from the top of the gasifier by a feeder at one time, then a loading door is closed, and fuel gas is discharged from a gas outlet at the top, so that intermittent production can be realized only. The downdraft is that the material is added from the top by a feeder, and the fuel gas is discharged from the bottom of the gasification furnace, so that the continuous production can be realized.

The two kinds of gasification furnaces are controlled by gasification principle and internal structure condition, and are suitable for adopting cylindrical vertical structure. Controlled by the structure form, the diameter of the gasification furnace is about 1.5m at most, the height is about 4m at most, and the gasification strength is about 300 kg/square meter h at most. Therefore, the gasification area is controlled by the structural conditions, and the treatment capacity is smaller and generally not more than 500 kg/h. If the processing capacity is improved, the diameter and the height of the device are increased, the size is too large, the overall quality is too large, and the environment condition that the product moves and passes on roads and fields cannot be realized.

In view of all the prior straw gasification furnaces, air must be forcibly distributed to meet the gasification conditions. Therefore, the Roots blower is a necessary device for the straw gasification furnace, and the blower with the largest model can meet the requirement of gasification air only at the speed of more than 15hw/h unless the power supply problem cannot be solved at all in a fixed place.

In addition, all types of straw gasification furnaces are controlled by technical conditions, and a feeding hole is required to be arranged at the top of the gasification furnace to meet the gasification conditions. Controlled by the gasification principle, the updraft gasifier can only feed materials once, and the closed feeding door operates. The downdraft gasification furnace does not need a closed feeding door to operate, and continuous feeding can be realized. However, the feeding hole is too high away from the ground, so that the normal operation can be realized only by matching with a feeding device. And all loading attachment can satisfy the material loading condition after all need to carry out crushing treatment to the material, must increase the breaker and carry out the preliminary treatment to the straw. Except for the addition of matched facilities, the conditions can not be driven by electric energy, only can meet the operation of fixed places, and the operation of moving in the field is impossible.

From the requirements of all kinds of gasification furnaces on materials at present, the materials are crushed whether in a fluidized bed or a fixed bed, and can be gasified when reaching a certain specification. Although the fluidized bed has lower requirements on the moisture content of the materials, the requirements on the specification of the materials are stricter. The fixed bed has relatively low requirement on the specification of the materials, but the water content is controlled to be not more than 20%. None of these conditions can meet the field operating conditions.

Disclosure of Invention

In order to solve the problems in the prior art, adapt to the field operation environment and realize the rapid harmless treatment of straws in the field, the invention provides a field movable unpowered straw pyrolysis gasification incineration treatment device, which has the following specific technical scheme:

a field movable unpowered straw pyrolysis gasification incineration treatment device comprises a gasification incineration device, a trailer, a dry purifier, a waste gas discharge pipe and a quick lifting device, wherein the gasification incineration device is fixed on a bottom plate of the trailer, the dry purifier is connected to the rear part of the top of the gasification incineration device through a rotating shaft, the waste gas discharge pipe is arranged at the top of the dry purifier, and the quick lifting device is provided with three supporting points and is respectively fixed on the upper part of the waste gas discharge pipe, the joint of the top of the gasification incineration device and the dry purifier and the rear side wall of the gasification incineration device;

the upper part of the outer wall of the front side of the outer wall of the gasification incineration device is provided with a feeding door which is connected to the gasification area inwards, the side walls around the gasification area are heat-insulating fire-resistant walls, a layer of primary air heating channel is wrapped outside the heat-insulating fire-resistant walls, the side wall of the feeding door is provided with an air curtain hole which is communicated with the feeding door and the primary air heating channel, the top of the gasification area is a fire-resistant arch, the bottom of the gasification area is provided with a fire grate, the side walls of the two sides are provided with a plurality of channels communicated with the primary air heating channel, the communicated part is provided with a primary air flow control device, a gas channel is arranged below the rear side wall of the gasification zone and is communicated with the gasification zone and the secondary combustion chamber, a secondary air channel is arranged between the gasification zone and the secondary combustion chamber, an explosion-proof ignition door is arranged above the fuel gas channel, the explosion-proof ignition door is connected with an explosion-proof ignition door control device arranged on the outer wall of the gasification incineration device through a connecting shaft;

the two combustion chamber rear wall board below sets up the deashing door, communicates two combustion chambers and external, the two combustion chamber tops make progress the arch and set up the venthole, and the wall is thermal-insulated resistant firebrick, two combustion chamber outer parcel one deck secondary air passageway, two combustion chamber both sides bottom intermediate position sets up the secondary air inlet door, secondary air inlet door one side UNICOM is external, and the part communicates the secondary air passageway on the opposite side, and two combustion chambers are communicated to the lower part, two combustion chamber lateral walls are close to the top position and evenly set up a plurality of secondary air jet orifices of one row, secondary air jet orifice below evenly sets up a plurality of primary air jet orifices of one row, two combustion chamber top ventholes upwards connect dry purifier.

The gasification zone is characterized in that an ash chamber is arranged in the middle of the lower portion of the gasification zone, an ash door is arranged on the front side wall of the ash chamber and connected to the outside, and the ash door is arranged below the feeding door.

Furthermore, a primary gasification air inlet valve is arranged in the middle of the lower portion of the left side and the right side of the outer wall of the gasification incineration device and is communicated with a primary air heating channel, the primary air heating channel is communicated with the gasification area through a primary air flow control device, the primary air flow control device is arranged in the middle of the left side and the right side of the outer wall of the gasification incineration device and penetrates through the outer wall of the gasification incineration device, the primary air flow control device is arranged on the outer side of the outer wall of the gasification incineration device and is provided with a hand wheel, and the primary air flow control device is arranged on the inner side of the outer wall and is provided with a telescopic plug; a secondary air channel is arranged between the heat-insulating fire-resistant wall at the rear side of the gasification zone and the heat-insulating fire-resistant wall at the front side of the secondary combustion chamber; the outer walls of the primary air heating channel and the secondary air channel are both made of steel plates, and the airtightness is guaranteed.

Furthermore, the explosion-proof ignition door is connected to an explosion-proof ignition door control device through a connecting shaft, and the explosion-proof ignition door control device is arranged on the outer wall of the left side of the upper part of the rear side of the gasification area and used for controlling the opening size of the ignition explosion-proof door; and a fire observation hole is formed in the upper part of the left side of the secondary combustion chamber, which is close to the air outlet, and is sealed by adopting refractory glass.

Further, dry-type clarifier bottom sets up tubaeform inlet port, the inlet port with the venthole passes through the loose axle and connects, inlet port upper portion horn mouth department sets up the hole layer board, hole layer board top is the filler district, the gas outlet is connected at filler district top, and the lateral wall sets up the discharge gate, filler district and gas outlet junction are tubaeform, set up the feed inlet on the tubaeform slope, the waste gas delivery pipe is connected to the gas outlet top.

Furthermore, activated carbon is used as the filler in the filler area.

Furthermore, the main body of the quick landing gear comprises a bracket, a pulley block bracket and a pulley block seat; the support is fixed the gasification burns the device outer wall and corresponds second combustion chamber rear side position, the support is close to and sets up screw thread frame machine on the gasification burns device one side, the support is kept away from and is set up two-way hand cranking dish on burning device one side, assembly pulley support one end is fixed at second combustion chamber top rear side, and the other end is equipped with the pulley block seat. And the other group of pulley block seat is fixed on the side wall of the upper part of the waste gas discharge pipe, a pulley block is arranged in the pulley block seat, and the bidirectional hand-cranking disc is connected with the pulley block through a steel wire rope.

Furthermore, guard plates are arranged on the front face, the left face and the right face of the screw thread frame machine, and the guard plates and the outer wall of the two combustion chambers jointly wrap the screw thread frame machine; and the pulley block seat is welded and fixed at a position 1m away from the top of the waste gas discharge pipe.

Furthermore, the bottom of the trailer is provided with front wheels and rear wheels, the front wheels are connected with two ends of a front wheel shaft through bearings, two ends of the front wheel shaft are fixedly connected with a front vertical shaft, and the front vertical shaft is fixedly connected to the bottom of the trailer; the rear wheels are connected to two ends of a rear wheel shaft through bearings, a rear vertical shaft is connected above two ends of the rear wheel shaft, a steering device is connected above the rear vertical shaft, the steering device is connected to the rear portion of the bottom of the trailer through a steering bearing disc, the front portion of the steering device is connected to the traction frame through a connecting piece, and the traction frame is connected to the tractor through a traction ring.

The gasification incineration device is characterized in that a waste gas discharge pipe support is arranged at the top of the front end of the gasification incineration device, a semicircular groove is formed in the middle of the upper portion of the waste gas discharge pipe support, and the diameter of the semicircular groove is slightly larger than that of the waste gas discharge pipe.

The beneficial technical effects of the invention are as follows: the device is dragged by a tractor to move and pass on roads and fields and can move and run in the fields; the straw treatment capacity reaches 1.2t/h, the gasification efficiency reaches 75 percent, and the gasification strength reaches 510kg/m²h; the waste gas discharge pipe in the device can rise and fall manually, so that the shape of the product is deformed, and the safe passing of roads is facilitated; the device firstly carries out pyrolysis gasification on the straws to prepare gas, and then carries out secondary gasification combustion on the gas in the secondary combustion chamber, and no smoke is discharged and no pollution is caused in the operation process; after the gas is gasified and combusted, a small amount of waste gas is generated and is subjected to activated carbon filtration, adsorption and cooling treatment, and the waste gas is discharged after reaching the standard; the invention creates a novel air curtain wall feeding door, a gasification area and the outside are isolated by the air curtain wall, the feeding door does not need to be closed and sealed in the operation process, the continuous feeding is realized, the smoke pouring phenomenon is avoided, and the secondary pollution is avoided; the straw gasification, gas combustion and waste gas purification treatment functions can be realized without electric energy, no power consumption is caused, and energy conservation and consumption reduction are realized; the active carbon dry purification mode is adopted, and no water is consumed; the straws do not need to be crushed, the pretreatment cost is avoided, and the operation cost is low; air is not required to be forced, feeding of a feeding machine is not required, and the product operation is free of power cost. Auxiliary machines such as a feeding machine, a Roots blower, a high-pressure water pump and the like are not needed, so that the equipment investment cost is low; the product directly enters the field for treatment, the cost for straw collection, packaging and transportation is avoided, and the operation cost is low; the product is convenient for manual loading, the operation is simple, the loading can be completed by three persons, and the labor cost is low; the product has the functions of safe movement and passage in road fields, no power (electricity) matching, gasification without crushing materials, continuous feeding, feeding by a feeding machine, forced air feeding, quick rise and fall of a waste gas discharge pipe, pyrolysis and gasification of straws, direct secondary gasification and incineration of fuel gas, and dry (anhydrous) purification of waste gas.

Drawings

FIG. 1 is a front view of a product according to the invention;

FIG. 2 is a side view of a product according to the invention;

FIG. 3 is a schematic view of the internal structure of the product of the present invention;

FIG. 4 is a partial sectional view of a gasification zone in the product of the present invention;

FIG. 5 is a partial cross-sectional view of a dry purifier in the product of the present invention;

FIG. 6 is a schematic diagram of a product of the present invention;

FIG. 7 is a flow chart of the gasification incineration process of the product of the invention.

In the figure, 1, a gasification incineration apparatus; 2, towing a trailer; 3, a dry purifier; 4, an exhaust gas discharge pipe; 5, an exhaust gas discharge pipe bracket; 6, a quick landing gear; 7, a primary air flow control device; 8, an explosion-proof ignition door control device; 9, refractory arch; 10, a feed gate; 11, air curtain holes; 12, a primary air heating channel; 13, a gasification zone; 14, a grate; 15, a dust outlet door; 16, an ash chamber; 17, front wheels; 18, a primary gasification air inlet valve; 19, an explosion-proof ignition door; 20, a gas channel; 21, a secondary air channel; 22, insulating refractory bricks; 23, a secondary air inlet door; 24, a second combustion chamber; 25, primary air injection holes; 26, secondary air injection holes; 27, fire observation holes; 28, a movable shaft; 29, a hole pallet; 30, a feed inlet; 31, a discharge hole; 32, a pulley block bracket; 33, pulley block; 34, a steel wire rope; 35, a dust removing door; 36, a steering device; 37, a traction frame; 38, a traction ring; 39, air outlet holes; 40, an air outlet; 41, a front wheel axle; 42, a front vertical shaft; 43, a screw thread frame machine; 44, a bidirectional hand-operated disc; 45, a bracket; 46, a pulley block seat; 47, a packing region; 48, air intake; 49, rear wheels; 50, a rear axle; 51, rear vertical shaft.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

As shown in figures 1-7, the invention provides a novel high-efficiency movable field unpowered straw pyrolysis, gasification and incineration treatment device. The device is a fixed bed horizontal integrated straw gasification incineration device, and mainly comprises a traction power device, a trailer 2, a traction frame 37, a gasification incineration device 1, a dry purifier 3, a waste gas discharge pipe 4, a waste gas discharge pipe bracket 5, a quick lifting device 6 and the like.

The gasification incineration device 1 uses the traction force of a traction device (tractor) to pull a trailer 2 to realize the passing movement on roads and fields. When the tractor is idle, the tractor can be used as an agricultural machine.

The trailer 2 is composed of wheels 17, an axle 41, a vertical shaft 42, a steering device 36, a traction frame 37 and a traction ring 38. The steering device 36 can rotate freely at 180 degrees, so that the trailer 2 is prevented from overturning after the turning exceeds 90 degrees, and the moving and passing safety of fields and roads is ensured.

The gasification incineration device 1 is fixedly fixed on the trailer 2 by screws, the front wheels 17 are connected with two ends of a front wheel shaft 41 through bearings, the front wheel shaft 41 and a front vertical shaft 42 are welded into a whole, and the front vertical shaft 42 and the trailer 2 are welded into a whole. The rear wheels 49 are connected with the two ends of the rear wheel shaft 50 through bearings, and the rear wheel shaft 50 and the rear vertical shaft 51 are welded into a whole. The rear vertical shaft 51 is welded to the steering gear 36, and the steering gear 36 is coupled to the trailer 2 by a steering bearing plate. The front end of the steering device 36 is connected with a traction frame 37 into a whole through a connecting piece, and the front end of the traction frame 37 is provided with a traction ring 38. The traction ring 38 is connected to the tractor with a connecting pin.

The gasification incineration apparatus 1 and the dry cleaner 3 are connected by a rotating shaft 28. The dry purifier 3 and the exhaust gas discharge pipe 4 are connected into a whole by flanges. The total height of the waste gas discharge pipe 4 is 5m, the waste gas discharge pipe is limited by the height of bridges, electric wires and the like when a road moves and passes, and the upper shaking force is large, so that potential safety hazards exist, therefore, the invention creates the quick lifting device 6, the dry type purification device 3 and the waste gas discharge pipe 4 are quickly laid down when the road passes, and the quick lifting device is placed on the waste gas discharge pipe support 5, so that the moving and passing safety of products is ensured.

The fast landing gear 6 mainly comprises a bracket 45, a screw thread frame machine 43, a bidirectional hand-cranking tray 44, a pulley block bracket 32, a pulley block 33, a steel wire rope 34 and a pulley block seat 46. The bracket 45 of the fast landing gear 6 is welded to the rear side of the second combustion chamber 24 in a convenient operating position. The screw frame machine 43 is fastened on the position of the bracket 45 near the second combustion chamber 24 by bolts, and the front, left and right surfaces are wrapped on the outer wall of the second combustion chamber 24 by the guard plate. The bidirectional hand-operated disk 44 is fastened on the end of the bracket 45 opposite to the screw thread frame machine 43 by bolts. The pulley bracket 32 is welded to the rear side of the upper part of the second combustion chamber 24. Pulley block seat 46 is welded to exhaust pipe 4 at a position 1m from the top. When the exhaust gas discharge pipe 4 is lifted, the bidirectional hand-cranking disc 44 is shaken clockwise, the bidirectional hand-cranking disc 44 drives the steel wire rope 34, and the steel wire rope 34 reduces the shaking force through the pulley block 33. The other end of the wire rope 34 is fastened to the pulley block 46 by bolts, and the pulley block 46 is lifted up the exhaust gas discharge pipe 4 by the wire rope 34. When the exhaust gas discharging pipe 4 falls down and falls down, the two-way hand-cranking disc 44 is hand-cranked in the anticlockwise direction, then the connecting flange between the air outlet hole 39 and the air inlet hole 48 is jacked up by the screw thread frame machine 43 which is hand-cranked in the clockwise direction, meanwhile, the two-way hand-cranking disc 44 is hand-cranked in the anticlockwise direction, when the exhaust gas discharging pipe 4 reaches an inclination angle close to 80 degrees, the exhaust gas discharging pipe 4 generates an inclination force, and the exhaust gas discharging pipe is toppled over by the control force of the two-way hand-cranking disc 44 until the exhaust gas discharging pipe falls down on the exhaust gas discharging pipe bracket. And finally, manually turning the screw thread frame machine 43 anticlockwise to return.

The gasification incineration device 1 comprises a feeding door 10, a gasification area 13, a fire grate 14, an ash chamber 16, an ash discharging door 15, a primary gasification air inlet valve 18, a primary air flow control device 7, an air curtain hole 11, a fuel gas channel 20, a primary air heating channel 12, an explosion-proof ignition door 19, an explosion-proof ignition door control device 8, a fire-resistant arch 9, a secondary combustion chamber 24, a secondary air inlet door 23, a secondary air channel 21, a primary air jet hole 25, a secondary air jet hole 26, a fire observation hole 27, a heat-insulating refractory brick 22, an air outlet hole 39, a quick lifting device 6 and the like.

The feeding gate 10 is welded on the front outer wall of the gasification incineration apparatus 1, at the upper part of the gasification zone 13, communicating with the gasification zone 13. The outer wall of the feeding door 10 is communicated with the primary air heating channel 12 through the air curtain holes 11, air in the primary air heating channel 12 is heated to accelerate the flow speed in operation, and is sprayed out through the air curtain holes 11 to form an air curtain wall, so that the gasification area 13 is isolated from being communicated with the outside, continuous feeding is realized, and the leakage of smoke in the gasification area 13 is prevented. The ash outlet door 15 is welded at the middle position of the lower part of the front side outer wall of the gasification incineration device 1 and is communicated with the ash chamber 16. The ash can be discharged through the ash discharging door 15 at any time and is dug and buried in the field to prevent fire and scatter. The ash residue from straw gasification belongs to plant ash, is a high-quality potash fertilizer, can be used for fertilizing the farmland, and can improve the yield and quality of crops. The primary gasification air inlet valve 18 is welded on the middle position of the lower part of the outer walls of the left side and the right side of the gasification incineration device 1, is communicated with the air heating channel 12 and provides gasification air for the gasification area 13. The primary gasification air heating channel 12 is communicated with the gasification area 13 through the primary air flow control device 7, and the equivalence ratio is controlled to be 0.2-0.3, so that the straws are guaranteed to be pyrolyzed and gasified in an anaerobic state. The gasification zone 13 is the core area of the product and is composed of a fire grate 14, a fire-resistant arch 9, a feeding door 10, a primary air flow control device 7, an explosion-proof ignition door 19, a gas channel 20 and the like. The gasification zone 13 can be divided into four areas of drying, pyrolysis, oxidation and reduction, and the straw is ignited and then undergoes four processes of drying, pyrolysis, oxidation and reduction to generate mixed gas, and the mixed gas enters the secondary combustion chamber 24 through the gas channel 20 to be gasified and combusted for the second time and the third time. The lower part of the gasification zone 13 is provided with a fire grate 14, the upper part is provided with a fire-resistant arch 9, and the front, the back, the left and the right are all heat-insulating fire-resistant walls so as to ensure the pyrolysis gasification temperature of the gasification zone 13. The outer wall of the heat-insulating fire-resistant wall is a primary air heating channel 12, the outer part of the primary air heating channel 12 is the outer wall of the gasification incineration device 1, and the surface of the outer wall plate is coated with high-temperature resistant primer and surface paint or is made of a 304 stainless steel plate. The tail part of the gasification zone 13 and the upper part of the fire grate 14 are welded with a gas channel 20 which is communicated with a second combustion chamber 24. An explosion-proof ignition door 19 is welded at the upper part of the gas channel 20, and after gas enters a secondary combustion chamber 24, open fire generated by the gasification region 13 is guided to be ignited through the explosion-proof ignition door 19. Meanwhile, if positive pressure is generated in the secondary combustion chamber 24, the fuel gas can enter the gasification region 13 through the explosion-proof ignition door 19 for pressure relief. The explosion-proof ignition door 19 is connected with the explosion-proof ignition door control device 8 through a connecting shaft, the explosion-proof ignition door control device 8 is arranged on the outer wall of the left side of the upper part of the tail part of the gasification region 13, and the opening size of the ignition door is controlled through the explosion-proof ignition door control device 8. The heat-insulation fire-resistant wall 22 of the heat-insulation fire-resistant wall and the combustion chamber 24 is arranged between the tail of the gasification area 13 and the second combustion chamber 24, the secondary air channel 21 is arranged between the two fire-insulation fire-resistant walls, the secondary air channel 21 is formed by two steel plates, the airtightness of the secondary air channel 21 is guaranteed, the gasification area 13 and the second combustion chamber 24 are effectively isolated, and the straw gasification and gas secondary combustion effects are guaranteed.

The second combustion chamber 24 is composed of a heat-insulating fire-resistant wall 22, a secondary air inlet door 23, a secondary air channel 21, a dust cleaning door 35, a primary air jet hole 25, a secondary air jet hole 26, a fire observation hole 27, an air outlet hole 39 and the like.

The fuel gas generated in the gasification zone 13 enters the secondary combustion chamber 24 through the fuel gas channel 20. The periphery of the secondary combustion chamber 24 is composed of a heat insulation fire-resistant wall 22, the outer wall of the heat insulation fire-resistant wall 22 is composed of a secondary air channel 21, and the secondary air channel 21 is composed of an inner wall plate and an outer wall plate, so that the tightness of the secondary air channel 21 is ensured. The surface of the outer wall plate is brushed with high-temperature resistant primer and surface paint or is made of a 304 stainless steel plate. The ash removal door 35 is welded to the lower portion of the rear side wall plate of the combustion chamber 24 and is communicated with the combustion chamber 24. The ash generated in the combustion chamber 24 is removed through an ash removing door 35 and is subjected to field landfill treatment together with gasified ash. The fire observation hole 27 is welded at the middle position of the upper part of the left side of the combustion chamber 24, which is close to the air outlet 39, and the fire observation hole 27 is sealed by adopting refractory glass, so that the combustion state of the second combustion chamber 24 can be conveniently observed. The secondary air inlet door 23 is arranged at the middle position of the bottoms of the left side and the right side of the combustion chamber 24, and the lower half part (one half) of the secondary air inlet door is communicated with the combustion chamber 24; the upper half (half) is communicated with the secondary air passage 21. The air in the lower half is directly mixed with the fuel gas at the bottom of the combustion chamber 24; the upper half of the air is heated and accelerated by the secondary air passage 21, and a part of the air is ejected from the primary air ejection holes 25 to be gasified and burned with the fuel gas. A part of the fuel is ejected from the secondary air ejection hole 26 and is re-gasified and combusted with the remaining unburned gas. The flame of the gasification zone 13 enters through the explosion-proof ignition door 19 and ignites the mixed gas in the combustion chamber 24. The residual trace waste gas after the gas is gasified and combusted by the air twice is discharged from the air outlet 39 and enters the dry type purifier 3.

The dry purifier 3 is composed of an air inlet 39, an air outlet 40, a feed inlet 30, a discharge outlet 31, a hole supporting plate 29 and a filling area 47. The air inlet 39 (i.e. the combustion chamber outlet 39) is a square flange, welded to the bottom of the dry purifier 3, and connected to the combustion chamber 24 by the movable shaft 28. The feed inlet 30 is welded on the bell mouth at the upper part of the dry-type purifier 3 and is fastened and sealed by a flange cover and a bolt. The lower part of the dry purifier 3 is welded with a discharge port 31 and is fastened and sealed by a flange cover and a bolt. The bell mouth reducing position on the upper part of the air inlet 39 is provided with a hole supporting plate 29, and the upper part of the hole supporting plate 29 is provided with a packing area 47. The filler is activated carbon.

A small amount of waste gas generated after the gas is gasified and combusted in the combustion chamber 24 enters the dry type purifier 3 through the combustion chamber air outlet 39, enters the filler area 47 through the hole supporting plate 29, is filtered and adsorbed with the active carbon, is discharged from the air outlet 39 to enter the waste gas discharge pipe 4, and is discharged through the attraction force generated by the height difference and the rising force generated by the density difference.

The field movable unpowered straw pyrolysis gasification incineration treatment device directly enters field operation under the traction of a tractor. After entering the field, the dry type purification device 3 and the waste gas discharge pipe 4 are quickly lifted by the manual lifting device 6, and the requirements of pyrolysis gasification of straws and power demand of secondary combustion of fuel gas are met by utilizing the height difference gravitation of the waste gas discharge pipe 4.

The straws do not need to be bundled, packed and crushed, and can be directly loaded into the pyrolysis gasification area 13 in the feed door 10 of the gasification incineration device 1 as long as the moisture content does not exceed 30 percent. And is ignited when the straw fills the gasification zone 13 and keeps the material level. The straw should be added in time after the material is ignited to ensure the material height of the gasification zone 13. The straws are pyrolyzed and gasified in the gasification zone 13 through four processes of drying, pyrolysis, oxidation and reduction to form mixed gas, and the mixed gas directly enters the secondary combustion chamber 24 through the gas channel 20 at the rear part of the grate 14 to be fully combusted for the second time. Part of the gasified air enters a gasification zone 13 through a feed door 10 to be mixed with the straws; the other part of the gasified air enters the primary air heating channel 12 through the primary gasified air inlet valve 18 to be heated and improve the flow rate, and the other part of the gasified air enters the gasification zone 13 through the primary gasified air flow regulating and controlling device 7 to be mixed with the straws and dry the straws, so that the straw gasification efficiency is improved, and meanwhile, oxygen required by the pyrolysis and gasification of the straws is provided. Part of the primary gasification air is sprayed out through an air curtain hole 11 arranged between the primary air heating channel 12 and the feeding door 10 to form an air curtain wall, and a gasification area is isolated from the outside. When the gasification zone 13 is under positive pressure, the air curtain wall can also prevent the flue gas in the gasification zone 13 from overflowing to pollute the environment.

The heating air in the primary air heating channel 12 enters a gasification area through the primary air flow control device 7 to be mixed with the straws, and the mixture is subjected to pyrolysis gasification reaction to produce mixed gas through four processes of drying, pyrolysis, oxidation and reduction, wherein the equivalent ratio of the air is designed to be 0.2-0.3, the gasification efficiency is 75%, the gasification strength is 510 kg/square meter h, and the low-level heat value of the fuel gas is 5000KJ/Nm³The above.

The fuel gas generated in the gasification zone 13 enters a secondary combustion chamber 24 through a fuel gas channel 20 for air intake and secondary gasification combustion, and the combustion air in the secondary combustion chamber 24 comes from a secondary air inlet door 23 at the bottom of the secondary combustion chamber 24. After the secondary air enters, part of the secondary air is directly added at the bottom of the secondary combustion chamber 24 to be mixed with the fuel gas. And partially into the secondary air channel 21. The air in the secondary air channel 21 is heated to raise the temperature, the flow rate is increased, the rising speed is increased, and finally the air is sprayed out from the primary air spraying hole 25 and the secondary air spraying hole 26 to be mixed with the fuel gas again to form secondary and tertiary gasification combustion. The straw is pyrolyzed and gasified to prepare mixed gas, and the mixed gas is sufficiently gasified and combusted twice in the secondary combustion chamber, so that the straw gasification combustion is realized, and no smoke is discharged. After the gas in the second combustion chamber 24 is gasified and combusted through air twice, the remainder is a small amount of waste gas, the waste gas directly enters the purifier 3, and the waste gas is filtered, adsorbed and cooled by the activated carbon and then is discharged through the waste gas discharge pipe 4 to reach the standard, so that the harm to the environment is small.

When the production is finished, the charcoal fire in the gasification area 13 is firstly discharged into an ash chamber under the fire grate 14 by using the furnace hook, then the

ash removing doors

15 and 35 are opened to clean ash slag, and the ash slag can be dug and buried in a field to prevent fire and scatter. Finally, the dry type purifier 3 and the exhaust gas discharge pipe 4 are laid down on the exhaust gas discharge pipe bracket by the quick lifting device 6. After all the treatment is finished, the tractor pulls the device to the destination.

While the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the invention. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. The utility model provides a field mobile unpowered straw pyrolysis gasification incineration treatment device which characterized in that: the treatment device comprises a gasification incineration device (1), a trailer (2), a dry purifier (3), a waste gas discharge pipe (4) and a quick lifting device (6), wherein the incineration device (1) is fixed on a bottom plate of the trailer (2), the dry purifier (3) is connected to the rear part of the top of the gasification incineration device (1) through a rotating shaft (28), the waste gas discharge pipe (4) is arranged at the top of the dry purifier (3), the quick lifting device (6) is provided with three fulcrums which are respectively fixed on the upper part of the waste gas discharge pipe (4), the joint of the top of the gasification incineration device (1) and the dry purifier (3) and the rear side wall of the gasification incineration device (1);

the gasification incineration device is characterized in that a feeding door (10) is arranged on the upper portion of the outer wall of the front side of the outer wall of the gasification incineration device (1), the feeding door (10) is connected to a gasification area (13) inwards, the peripheral side wall of the gasification area (13) is a heat-insulating fire-resistant wall (22), a layer of primary air heating channel (12) wraps the heat-insulating fire-resistant wall (22), the side wall of the feeding door (10) is provided with an air curtain hole (11), the air curtain hole (11) is communicated with the feeding door (10) and the primary air heating channel (12), the top of the gasification area (13) is a fire-resistant arch (9), the bottom of the gasification area is provided with a fire grate (14), the side walls on two sides are provided with a plurality of channels communicated with the primary air heating channel (12), a primary air flow control device (7) is arranged at the communication position, a gas channel (20) is arranged below the rear side wall of the gasification area (13), and the gas channel (20) is communicated with the gasification area (13) and a secondary combustion chamber (24), a secondary air channel (21) is arranged between the gasification region (13) and the secondary combustion chamber (24), an explosion-proof ignition door (19) is arranged above the fuel gas channel (20), and the explosion-proof ignition door (19) is connected with an explosion-proof ignition door control device (8) arranged on the outer wall of the gasification incineration device (1) through a connecting shaft;

an ash cleaning door (35) is arranged below the rear side wall plate of the second combustion chamber (24) and is communicated with the second combustion chamber (24) and the outside, the top of the secondary combustion chamber (24) is provided with an air outlet (39) in a convex way, the four walls are heat-insulating refractory bricks (22), a layer of secondary air channel (21) is wrapped on the outer wall of the secondary combustion chamber (24), a secondary air inlet door (23) is arranged in the middle of the bottoms of the two sides of the secondary combustion chamber (24), one side of the secondary air inlet door (23) is communicated with the outside, the upper part of the other side is communicated with the secondary air channel (21), the lower part is communicated with the secondary combustion chamber (24), a row of a plurality of secondary air injection holes (26) are uniformly arranged on the side wall of the secondary combustion chamber (24) near the top, a row of a plurality of primary air injection holes (25) are uniformly arranged below the secondary air injection holes (26), the top of the secondary combustion chamber (24) is provided with an air outlet (39) which is upwards connected with the dry-type purifier (3);

gasification district (13) below intermediate position sets up ash chamber (16), ash chamber (16) preceding lateral wall sets up ash door (15) and is connected to the external world, ash door (15) set up in the feed door below.

2. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 1, wherein: a primary gasification air inlet valve (18) is arranged in the middle of the lower portion of the left side and the right side of the outer wall of the gasification incineration device (1) and communicated with a primary air heating channel (12), the primary air heating channel (12) is communicated with the gasification area (13) through a primary air flow control device (7), the primary air flow control device (7) is arranged in the middle of the left side and the right side of the outer wall of the gasification incineration device (1) and penetrates through the outer wall of the gasification incineration device (1), the outer side portion, arranged on the outer wall of the gasification incineration device (1), of the primary air flow control device (7) is a hand wheel, and the inner side portion, arranged on the outer wall of the gasification incineration device (1), of the primary air flow control device is a telescopic plug; a secondary air channel (21) is arranged between the heat-insulating fire-resistant wall (22) at the rear side of the gasification zone (13) and the heat-insulating fire-resistant wall (22) at the front side of the secondary combustion chamber (24); the outer walls of the primary air heating channel (12) and the secondary air channel (21) are both made of steel plates, and the tightness is guaranteed.

3. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 1, wherein: the explosion-proof ignition door (19) is connected to an explosion-proof ignition door control device (8) through a connecting shaft, the explosion-proof ignition door control device (8) is arranged on the outer wall of the left side of the upper part of the rear side of the gasification region (13) and controls the opening size of the ignition explosion-proof door (19); and a fire observation hole (27) is formed in the upper part of the left side of the secondary combustion chamber (24) and is close to the air outlet hole (39), and the fire observation hole (27) is sealed by adopting refractory glass.

4. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 1, wherein: dry-type clarifier (3) bottom sets up tubaeform inlet port (48), inlet port (48) with venthole (39) are connected through loose axle (28), inlet port (48) upper portion horn mouth department sets up hole layer board (29), hole layer board (29) top is for packing district (47), packing district (47) top connection gas outlet (40), the lateral wall sets up discharge gate (31), packing district (47) are tubaeform with gas outlet (40) junction, set up feed inlet (30) on the tubaeform slope, exhaust emission pipe (4) is connected to gas outlet (40) top.

5. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 4, wherein: the filler in the filler area (47) adopts activated carbon.

6. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 1, wherein: the main body of the rapid lifting device (6) is a bracket (45), a pulley block bracket (32) and a pulley block seat (46); the support (45) is fixed on the outer wall of the gasification incineration device (1) and corresponds to the rear side of the secondary combustion chamber (24), a screw thread frame machine (43) is arranged on one side, close to the gasification incineration device (1), of the support (45), a bidirectional hand-operated disc (44) is arranged on one side, far away from the gasification incineration device (1), of the support (45), one end of the pulley block support (32) is fixed on the rear side of the top of the secondary combustion chamber (24), and the other end of the pulley block support is fixed with the pulley block (33); the other group of pulley blocks (33) is fixed on the side wall of the upper part of the exhaust gas discharge pipe (4) through a pulley block seat (46); the bidirectional hand-cranking plate (44) is connected with the pulley block (33) through a steel wire rope (34).

7. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 4, wherein: guard plates are arranged on the front surface, the left surface and the right surface of the screw thread frame machine (43), and the guard plates and the outer wall of the second combustion chamber (24) together wrap the screw thread frame machine (43) therein; and the pulley block seat (46) is welded and fixed at a position 1m away from the top of the waste gas discharge pipe (4).

8. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 1, wherein: the bottom of the trailer (2) is provided with rear wheels (17) and front wheels (49), the front wheels (17) are connected to two ends of a front wheel shaft (41) through bearings, two ends of the front wheel shaft (41) are fixedly connected with a front vertical shaft (42), and the front vertical shaft (42) is fixedly connected to the bottom of the trailer (2); the rear wheels (49) are connected to two ends of a rear wheel shaft (50) through bearings, a rear vertical shaft (51) is connected to the upper portions of two ends of a front wheel shaft (50), a steering device (36) is connected to the upper portion of the rear vertical shaft (51), the steering device (36) is connected to the rear portion of the bottom of the trailer (2) through a steering bearing disc, the rear portion of the steering device (36) is connected to a traction frame (37) through a connecting piece, and the traction frame (37) is connected to a tractor through a traction ring (38).

9. The field movable unpowered straw pyrolysis, gasification and incineration treatment device according to claim 1, wherein: the top of the front end of the gasification incineration device (1) is provided with a waste gas discharge pipe support (5), the middle position of the upper part of the waste gas discharge pipe support (5) is provided with a semicircular groove, and the diameter of the semicircular groove is slightly larger than that of the waste gas discharge pipe (4).