阅读说明：本技术 一种以畜禽粪便为原料的生物质气化生产设备及生产方法 (Biomass gasification production equipment and production method taking livestock and poultry manure as raw material ) 是由 焦耀华 孙崇哲 于 2019-12-23 设计创作，主要内容包括：本发明公开了一种以畜禽粪便为原料的生物质气化生产设备及生产方法,包括脱水机,脱水机输出端通过第一输送装置连通烘干装置进料端,烘干装置出料端经第二输送装置连通成型装置的进料端,成型装置出料端经第三输送装置连通缓存料仓进料端,缓存料仓出料端经第四输送装置连通生物质气化炉进料端,生物质气化炉上设有燃气出口,燃气出口依次通过管道连通第一级除焦油设备和第二级除焦油设备,第一级除焦油设备和第二级除焦油设备之间连通有气液分离器,所述第二级除焦油设备输出端通过管道连通储气装置；本发明不产生多余废渣,尾气符合排放要求,既减少畜禽粪便便自然发酵带来的环境问题,又在降低奶牛养殖成本的同时,增加多余收益。(The invention discloses biomass gasification production equipment and a production method taking livestock and poultry manure as raw materials, and the biomass gasification production equipment comprises a dehydrator, wherein the output end of the dehydrator is communicated with the feed end of a drying device through a first conveying device, the discharge end of the drying device is communicated with the feed end of a forming device through a second conveying device, the discharge end of the forming device is communicated with the feed end of a cache bin through a third conveying device, the discharge end of the cache bin is communicated with the feed end of a biomass gasification furnace through a fourth conveying device, the biomass gasification furnace is provided with a gas outlet, the gas outlet is communicated with a first-stage tar removing device and a second-stage tar removing device through pipelines in sequence, a gas-liquid separator is communicated between the first-stage tar removing device and the second-stage tar removing device, and the output end of the second; the invention does not produce redundant waste residue, the tail gas meets the emission requirement, the environmental problem caused by the natural fermentation of the livestock and poultry manure is reduced, and the redundant benefit is increased while the dairy cow breeding cost is reduced.)

1. A biomass gasification production device taking livestock and poultry manure as a raw material is characterized by comprising a dehydrator, a drying device, a forming device, a cache bin, a biomass gasification furnace, a gas-liquid separator, a first-stage tar removing device and a second-stage tar removing device, wherein the output end of the dehydrator is communicated with the feed end of the drying device through a first conveying device, the discharge end of the drying device is communicated with the feed end of the forming device through a second conveying device, the discharge end of the forming device is communicated with the feed end of the cache bin through a third conveying device, the discharge end of the cache bin is communicated with the feed end of the biomass gasification furnace through a fourth conveying device, the biomass gasification furnace is provided with a gas outlet, the gas outlet is communicated with the first-stage tar removing device and the second-stage tar removing device through pipelines, and the gas-liquid separator is communicated between the first-stage tar removing device and the second-stage, and the output end of the second-stage tar removing equipment is communicated with the gas storage device through a pipeline.

2. The apparatus for producing biomass from livestock and poultry manure by gasification as claimed in claim 1, wherein the first conveyor, the second conveyor and the third conveyor are all belt conveyors.

3. The livestock manure-based biomass gasification production equipment as claimed in claim 2, wherein the fourth conveying device comprises a belt conveyor communicated with the output end of the buffer storage bin, and the output end of the belt conveyor is communicated with a bucket elevator.

4. The apparatus for producing biomass from livestock and poultry manure through gasification as claimed in claim 3, wherein the drying device comprises a dryer and a combustion furnace mechanism communicated with the dryer, the combustion furnace mechanism comprises a particle burner and a secondary combustion chamber, one end of the secondary combustion chamber is connected with the particle burner, and the other end of the secondary combustion chamber is connected with the dryer; the dryer is also connected with a tail gas treatment device.

5. The biomass gasification production equipment taking livestock and poultry manure as raw material according to claim 4, wherein the tail gas treatment device comprises a cyclone dust collector communicated with a tail gas discharge port of the dryer, the output end of the cyclone dust collector is communicated with a pulse dust collector, the output end of the pulse dust collector is communicated with a photo-oxidation catalyst, and the output end of the photo-oxidation catalyst is communicated with a draught fan.

6. The livestock manure-based biomass gasification production equipment as claimed in claim 5, wherein the forming device is a granulator.

7. The biomass gasification production equipment taking livestock and poultry manure as a raw material according to claim 6, characterized in that the first-stage tar removal equipment comprises a first-stage spray purifier, the first-stage spray purifier is communicated with a fuel gas outlet on a biomass gasification furnace, and a cyclone dust collector is arranged between the first-stage spray purifier and the fuel gas outlet on the biomass gasification furnace; the output end of the first-stage spraying purifier is communicated with a second-stage spraying purifier, the output end of the second-stage spraying purifier is connected with a gas-liquid separator, and the first-stage spraying purifier and the second-stage spraying purifier are respectively communicated with a circulating water tank.

8. The biomass gasification production equipment taking livestock and poultry manure as raw material according to claim 7, wherein the second-stage tar removal equipment comprises a fan communicated with the output end of the gas-liquid separator, the other end of the fan is connected with two second-stage physical tar removers through a pipeline, the two second-stage physical tar removers are arranged on the communicated pipeline in parallel, and the gas inlet end and the gas outlet end of each second-stage physical tar remover are respectively connected with a valve.

9. The biomass gasification production equipment taking livestock and poultry manure as raw material according to claim 8, wherein the secondary physical tar remover comprises an outer barrel, an inner barrel is arranged in the outer barrel, the upper end and the lower end of the inner barrel are respectively connected with the inner part of the outer barrel to divide the inner part of the outer barrel into an inner cavity and an outer cavity, the upper end of the outer barrel is connected with an air inlet communicated with the inner cavity, a filter layer is arranged in the inner cavity, and the upper side of the outer barrel is provided with a storage opening communicated with the inner cavity and used for placing and taking out the filter layer; the side wall of the outer cylinder body is provided with an air outlet communicated with the outer cavity; the inner cavity is communicated with the outer cavity through a ventilation channel which is arranged below the filter layer and at the lower side of the inner cylinder.

10. A method for producing biomass from livestock and poultry manure by gasification based on the apparatus according to claim 9,

a. putting raw material livestock and poultry manure into a feed inlet of a dehydrator, preliminarily removing redundant water in the raw material livestock and poultry manure under the extrusion action of a spiral device in the dehydrator, discharging the water from a discharge port of the dehydrator onto a belt conveyor, and conveying the water into a dryer through the belt conveyor;

b. livestock manure entering a dryer is repeatedly picked up under the action of a backflow blade in the dryer, hot air is provided for the dryer by a particle burner and a secondary combustion chamber, moisture of the livestock manure is gradually dried and is discharged from a discharge port of the dryer onto a belt conveyor, dust-containing tail gas generated by drying the livestock manure is discharged by the dryer, the tail gas enters a cyclone dust collector under the action of an induced draft fan to remove large particle impurities in the tail gas and reduce the temperature of the tail gas, then the tail gas enters a pulse dust collector to further remove particle impurities in the tail gas, then the tail gas enters a photo-oxidation catalyst to remove atmospheric pollutants such as hydrogen sulfide, ammonia, mercaptan and the like in the tail gas, and various malodorous gases are removed, and the tail gas reaching the standard is treated and is discharged from a chimney of the induced draft fan;

c. the livestock and poultry manure passing through the belt conveyor is conveyed to a granulator, the granulator processes the livestock and poultry manure into granules, and the granules are conveyed to a buffer storage bin through the belt conveyor;

d. when the livestock and poultry manure particles in the cache bin are accumulated to a certain amount, the output end of the cache bin outputs the livestock and poultry manure particles to a belt conveyor, the livestock and poultry manure particles are conveyed to a feed port of a bucket elevator through the belt conveyor, and then the livestock and poultry manure particles are conveyed to the feed port of a fixed bed biomass gasification furnace by the bucket elevator;

e. livestock and poultry manure particles enter the furnace body from a charging material inlet, air is sucked into the furnace body from an air inlet, the livestock and poultry manure particles respectively pass through four different temperature reaction stages of a drying layer, a pyrolysis layer, an oxidation layer and a reduction layer in the furnace body, and biomass gas can be output from a gas outlet after the reaction is finished;

f. the biomass gas enters the cyclone dust collector under the action of the Roots blower, large particle impurities in the gasified gas are removed, the temperature of the gasified gas is reduced, then the biomass gas enters the primary spraying purifier and the secondary spraying purifier, tar in the biomass gas is removed, the temperature of the gasified gas is further reduced, then the biomass gas enters the gas-liquid separator, moisture in the biomass gas is separated, then the biomass gas enters the secondary physical tar remover through the Roots blower, the tar, the moisture and the particle impurities in the biomass gas are further removed, clean biomass gas is obtained, and the clean biomass gas is conveyed to the gas storage device through a pipeline.

Technical Field

The invention relates to the technical field of biomass gasification equipment, in particular to biomass gasification production equipment and a production method by taking livestock and poultry manure as a raw material.

Background

In recent years, with the development of economy and the improvement of living standard of people, the demand of livestock and poultry products is continuously increased, the production scale is continuously enlarged, and the livestock and poultry breeding mode in China at present is changed from the breeding of each household to the large-scale intensive breeding; in some countries and regions in europe, the intensive livestock and poultry breeding degree has been developed to a relatively high level, but with the enlargement of production scale, problems caused by the discharged excrement are more and more, and the health of people and livestock and the sustainable development of livestock and poultry breeding are seriously affected; secondly, the large amount of accumulated excrement can bring great pressure to environmental protection.

The national environmental protection administration surveys 23 provinces and cities in the country, and finds that 90% of large-scale livestock and poultry farms in the country are not subjected to environmental evaluation, 60% of livestock and poultry farms are lack of necessary pollution prevention and treatment measures, and pollution generated by livestock and poultry breeding becomes a main source of non-point source pollution in rural areas in China.

The livestock and poultry manure is a valuable resource, particularly livestock and poultry manure for dairy cows, the main food of the dairy cows is green grass, corn, cotton seeds and the like, the content of cellulose and lignin in the livestock and poultry manure is close to that of straw, the content of hemicellulose is lower than that of the straw, the ash content of the livestock and poultry manure is slightly higher than that of the straw, and the high-grade calorific value of dry-base livestock and poultry manure is equivalent to that of the straw.

Disclosure of Invention

The invention aims to solve the problems and adopts the technical scheme that:

a biomass gasification production device using livestock and poultry manure as a raw material comprises a dehydrator, a drying device, a forming device, a buffer storage bin, a biomass gasification furnace, a gas-liquid separator, a first-stage tar removing device and a second-stage tar removing device, the output end of the dehydrator is communicated with the feed end of the drying device through a first conveying device, the discharge end of the drying device is communicated with the feed end of the forming device through a second conveying device, the discharge end of the forming device is communicated with the feed end of the buffer storage bin through a third conveying device, the discharge end of buffer memory feed bin passes through the feed end of fourth conveyor intercommunication biomass gasification stove, is equipped with the gas export on the biomass gasification stove, and the gas export loops through first order tar removing equipment of pipeline intercommunication and second level tar removing equipment, and the intercommunication has vapour and liquid separator between first order tar removing equipment and the second level tar removing equipment, the output of second level tar removing equipment passes through pipeline intercommunication gas storage device.

Further, the first conveying device, the second conveying device and the third conveying device are all belt conveyors.

Further, fourth conveyor is including the band conveyer of intercommunication buffer memory feed bin output, and band conveyer's output intercommunication has bucket elevator.

Further, the drying device comprises a dryer and a combustion furnace mechanism communicated with the dryer, the combustion furnace mechanism comprises a particle burner and a secondary combustion chamber, one end of the secondary combustion chamber is connected with the particle burner, and the other end of the secondary combustion chamber is connected with the dryer; the dryer is also connected with a tail gas treatment device.

Furthermore, the tail gas treatment device comprises a cyclone dust collector communicated with a tail gas discharge port of the dryer, the output end of the cyclone dust collector is communicated with a pulse dust collector, the output end of the pulse dust collector is communicated with a photo-oxidation catalyst, and the output end of the photo-oxidation catalyst is communicated with a draught fan.

Further, the forming device is a granulator.

Further, the first-stage tar removal equipment comprises a first-stage spraying purifier, the first-stage spraying purifier is communicated with a fuel gas outlet on the biomass gasification furnace, and a cyclone dust collector is arranged between the first-stage spraying purifier and the fuel gas outlet on the biomass gasification furnace; the output end of the first-stage spraying purifier is communicated with a second-stage spraying purifier, the output end of the second-stage spraying purifier is connected with a gas-liquid separator, and the first-stage spraying purifier and the second-stage spraying purifier are respectively communicated with a circulating water tank.

Furthermore, the second-stage tar removing equipment comprises a fan communicated with the output end of the gas-liquid separator, the other end of the fan is connected with two second-stage physical tar removers through a pipeline, the two second-stage physical tar removers are connected in parallel on the communicated pipeline, and the gas inlet end and the gas outlet end of each second-stage physical tar remover are respectively connected with a valve.

Further, the secondary physical tar remover comprises an outer barrel, an inner barrel is arranged in the outer barrel, the upper end and the lower end of the inner barrel are respectively connected with the interior of the outer barrel to divide the interior of the outer barrel into an inner cavity and an outer cavity, the upper end of the outer barrel is connected with an air inlet communicated with the inner cavity, a filter layer is arranged in the inner cavity, and a storage opening communicated with the inner cavity and used for placing and taking out the filter layer is arranged at the upper side of the outer barrel; the side wall of the outer cylinder body is provided with an air outlet communicated with the outer cavity; the inner cavity is communicated with the outer cavity through a ventilation channel which is arranged below the filter layer and at the lower side of the inner cylinder.

The biomass gasification production method based on the equipment and taking the livestock and poultry manure as the raw material comprises the following steps:

a. putting raw material livestock and poultry manure into a feed inlet of a dehydrator, preliminarily removing redundant water in the raw material livestock and poultry manure under the extrusion action of a spiral device in the dehydrator, discharging the water from a discharge port of the dehydrator onto a belt conveyor, and conveying the water into a dryer through the belt conveyor;

b. livestock and poultry manure entering a dryer is repeatedly picked up under the action of a backflow blade in the dryer, hot air is provided for the dryer by a particle burner and a secondary combustion chamber, the livestock and poultry manure is gradually dried in the presence of moisture and is discharged to a belt conveyor from a discharge port of the dryer, dust-containing tail gas generated by drying the livestock and poultry manure is discharged by the dryer, the tail gas enters a cyclone dust collector under the action of an induced draft fan to remove large particle impurities in the tail gas and reduce the temperature of the tail gas, then the tail gas enters a pulse dust collector to further remove particle impurities in the tail gas, then the tail gas enters a photo-oxidation catalyst to remove atmospheric pollutants such as hydrogen sulfide, ammonia, mercaptan and the like in the tail gas, and remove various malodorous gases, and the tail gas up to the standard is treated and is discharged from a chimney of the induced draft fan;

c. the livestock and poultry manure passing through the belt conveyor is conveyed to a granulator, the granulator processes the livestock and poultry manure into granules, and the granules are conveyed to a buffer storage bin through the belt conveyor;

d. when the livestock and poultry manure particles in the cache bin are accumulated to a certain amount, the output end of the cache bin outputs the livestock and poultry manure particles to a belt conveyor, the livestock and poultry manure particles are conveyed to a feed port of a bucket elevator through the belt conveyor, and then the livestock and poultry manure particles are conveyed to the feed port of a fixed bed biomass gasification furnace by the bucket elevator;

e. livestock and poultry manure particles enter the furnace body from a charging material inlet, air is sucked into the furnace body from an air inlet, the livestock and poultry manure particles respectively pass through four different temperature reaction stages of a drying layer, a pyrolysis layer, an oxidation layer and a reduction layer in the furnace body, and biomass gas can be output from a gas outlet after the reaction is finished;

f. the biomass gas enters the cyclone dust collector under the action of the Roots blower, large particle impurities in the gasified gas are removed, the temperature of the gasified gas is reduced, then the biomass gas enters the primary spraying purifier and the secondary spraying purifier, tar in the biomass gas is removed, the temperature of the gasified gas is further reduced, then the biomass gas enters the gas-liquid separator, moisture in the biomass gas is separated, then the biomass gas enters the secondary physical tar remover through the Roots blower, the tar, the moisture and the particle impurities in the biomass gas are further removed, clean biomass gas is obtained, and the clean biomass gas is conveyed to the gas storage device through a pipeline.

The invention has the following beneficial effects:

1. the invention relates to biomass gasification production equipment taking livestock manure as a raw material, which is characterized in that the livestock manure is dehydrated through a dehydrator aiming at the livestock manure as the raw material, then the livestock manure is dried by a dryer, the dried livestock manure is molded and manufactured through a molding device and then is conveyed to a biomass gasification furnace for treatment, the biomass gasification furnace enables the contact area of the material and a grate to be larger, the gasification furnace smoothly discharges carbon under the action of rotation of the grate, the carbon discharging speed is high, the manpower input can be reduced, and the working efficiency is improved; the produced biomass gas passes through the first-stage tar removing equipment and the second-stage tar removing equipment through the gas outlet to obtain clean biomass gas, the energy in the livestock and poultry excrement is fully recycled in the whole process, no redundant waste residue is produced, the tail gas meets the emission requirement, the environmental problems caused by natural fermentation of the livestock and poultry excrement are reduced, the breeding cost of dairy cows is reduced, the redundant income is increased, and the method is suitable for being used in livestock and poultry large-scale and intensive farms in China, Europe and other areas.

2. According to the invention, the first tar removing device is adopted to purify and cool the generated biomass gas, so that the generated high-temperature biomass gas is prevented from having tar to influence the service life and cleanliness of the conveying pipeline.

3. The second-stage tar removal equipment adopted in the invention has simple structure, convenient operation and convenient use and maintenance; adopt the physics mode to detach tar, do not produce waste water waste gas, safe and reliable through adopting inner chamber and exocoel isolated design, is used for filtering biomass gasification gas with the inner chamber, and exocoel mainly used discharges after the biomass gasification gas buffering after will filtering, separately sets up air inlet and gas outlet like this for biomass gasification gas can fully detach tar through the filter layer, improves the tar removal effect, provides clear gasification gas for generating set, extension generating set life.

4. The invention adopts a tail gas treatment device, and treats dust-containing particles in the tail gas of the dryer to be below the emission requirement by a two-stage dust removal technology combining cyclone dust removal and pulse dust removal; the photo-oxygen purifier catalysis technology is adopted to remove atmospheric pollutants such as hydrogen sulfide, ammonia gas and thiols in the tail gas and remove various foul odors, so that the tail gas generated in the process of biomass gasification of livestock and poultry manure is treated, the pollution to the environment is reduced, and the emission requirement is met.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a biomass gasification furnace;

FIG. 3 is a partial schematic view of the internal structure of the biomass gasification furnace;

FIG. 4 is an enlarged view of the internal structure A of the biomass gasification furnace;

FIG. 5 is a schematic diagram of a two-stage physical de-coker of the present invention;

FIG. 6 is a partial structural cross-sectional view of a secondary physical de-tar of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, a biomass gasification production apparatus using livestock and poultry manure as a raw material comprises a dehydrator 2, wherein an output end of the dehydrator 2 is communicated with a feed end of a drying device through a first conveying device, a discharge end of the drying device is communicated with a feed end of a forming device 6 through a second conveying device, and preferably, the forming device 6 is a granulator in this embodiment; the discharge end of the forming device 6 is communicated with the feed end of a cache bin 7 through a third conveying device, the discharge end of the cache bin 7 is communicated with the feed end of a biomass gasification furnace 8 through a fourth conveying device, a fuel gas outlet 85 is arranged on the biomass gasification furnace 8, the fuel gas outlet 85 is communicated with a first-stage tar removing device 9 and a second-stage tar removing device sequentially through pipelines, a gas-liquid separator 10 is communicated between the first-stage tar removing device 9 and the second-stage tar removing device, the output end of the second-stage tar removing device is communicated with a gas storage device 13 through a pipeline, and the preferred gas storage device 13 is a gas storage tank; preferably, in this embodiment, the first conveying device, the second conveying device, and the third conveying device are all belt conveyors 3; fourth conveyor is including the band conveyer 3 of the output of intercommunication buffer memory feed bin 7, and the output intercommunication of band conveyer 3 has bucket elevator 31, and the adoption of bucket elevator 31 can reduce the transport degree of difficulty, and practices thrift the space, carries the livestock and poultry excrement and urine of drying to the fixed bed downdraft biomass gasification stove 8 in through perpendicular transport mode.

As shown in fig. 1, in order to dry the livestock and poultry manure in the embodiment, and facilitate the subsequent processing process, the drying apparatus includes a dryer 4 and a combustion furnace mechanism 1 communicated with the dryer 4, the combustion furnace mechanism 1 includes a particle burner 1a and a secondary combustion chamber 1b, one end of the secondary combustion chamber 1b is connected to the particle burner 1a, and the other end of the secondary combustion chamber 1b is connected to the dryer 4; and the dryer 4 is also connected with a tail gas treatment device 5.

As shown in fig. 1, in order to treat the tail gas generated in the process of gasifying the biomass of the livestock and poultry manure and reduce the pollution to the environment, the tail gas generated in the process of processing the livestock and poultry manure needs to be treated, the tail gas treatment device 5 comprises a cyclone 5a communicated with a tail gas discharge port of the dryer 4, the output end of the cyclone 5a is communicated with a pulse dust collector 5b, the output end of the pulse dust collector 5b is communicated with a photo-oxidation catalyst 5c, the output end of the photo-oxidation catalyst 5c is communicated with an induced draft fan 5d, the induced draft fan 5d is used for sequentially sucking the tail gas discharged from the tail gas discharge port of the dryer 4 to the cyclone 5a, the pulse dust collector 5b and the photo-oxidation catalyst 5c, the treated tail gas is discharged by the induced draft fan 5d, and the pollution of the tail gas generated in the process of processing the livestock and poultry manure to the air is reduced by the tail gas.

As shown in fig. 1, in order to purify and cool the generated biomass gas and avoid the generated high-temperature biomass gas with tar from affecting the service life and cleanliness of the conveying pipeline, the generated biomass gas needs to be processed by a first-stage tar removing device 9, the first-stage tar removing device 9 includes a first-stage spray purifier 9a, the first-stage spray purifier 9a is communicated with a gas outlet on the biomass gasification furnace 8, and a cyclone dust collector 5a is arranged between the first-stage spray purifier 9a and the gas outlet on the biomass gasification furnace 8; the output end of the first-stage spraying purifier 9a is communicated with a second-stage spraying purifier 9c, the output end of the second-stage spraying purifier 9c is communicated with a gas-liquid separator 10, the first-stage spraying purifier 9a and the second-stage spraying purifier 9c are respectively communicated with a circulating water tank 9b, and the circulating water tank 9b is used for supplying circulating water to the first-stage spraying purifier 9a and the second-stage spraying purifier 9c, cooling the high-temperature biomass gas and removing tar and particle impurities in the biomass gas.

As shown in fig. 1, in order to perform secondary purification on the generated biomass gas and ensure that the biomass gas entering the gas storage device 13 has fewer impurities and lower tar content, the second-stage tar removing equipment comprises a roots blower 11 communicated with the output end of the gas-liquid separator 10, the other end of the roots blower 11 is connected with a second-stage physical tar remover 12 through a pipeline, two second-stage physical tar removers 12 are arranged in parallel on the communicated pipeline, and the gas inlet end and the gas outlet end of the second-stage physical tar remover 12 are respectively connected with a valve; preferably, the valve is an electric butterfly valve. Two secondary physical tar removers 12 are connected in parallel for operation, a valve of one secondary physical tar remover 12 is opened during normal operation, a valve of the other secondary physical tar remover is closed, when the secondary physical tar remover 12 needs to be maintained, the valve of the secondary physical tar remover 12 during operation is closed, and the valve of the other secondary physical tar remover is opened for continuous operation, so that when equipment is maintained, the biomass gasification furnace 8 can keep continuous operation without shutdown, and the use efficiency of the whole set of equipment is improved.

In this embodiment, as shown in fig. 5 to 6, the secondary physical tar remover 12 includes an outer cylinder 123, and preferably, in this embodiment, the outer cylinder 123 includes a middle cylinder part and an upper cylinder cover and a lower cylinder cover respectively connected to the upper end and the lower end of the cylinder part; an inner cylinder 125 is arranged inside the outer cylinder 123, the upper end and the lower end of the inner cylinder 125 are respectively connected with the inside of the outer cylinder 123 to divide the inside of the outer cylinder 123 into an inner cavity and an outer cavity, the upper end of the outer cylinder 123 is connected with an air inlet 121 communicated with the inner cavity, a filter 128 is arranged in the inner cavity, a buffer space is reserved between the filter layer 128 and the top of the inner cavity, biomass gasified fuel gas entering from the air inlet 121 can be buffered conveniently and fully filtered through the filter layer 128, and a space is reserved between the filter layer 128 and the bottom of the inner cavity, so that the filtered biomass gasified fuel gas; the upper side of the outer cylinder 123 is provided with a storage opening 122 communicated with the inner cavity for placing and taking out the filter layer, in this embodiment, the storage opening 122 is arranged on the upper cylinder cover, and preferably, a plurality of storage openings 122 are arranged; the side wall of the outer cylinder body 123 is provided with an air outlet 124 communicated with the outer cavity; the inner chamber and the outer chamber are communicated through a ventilation channel 126 below the filter layer 128 and positioned on the lower side of the inner cylinder 125, the device is provided with the inner chamber and the outer chamber, the inner chamber is used for filtering biomass gasification gas, the outer chamber is mainly used for buffering the filtered biomass gasification gas and then discharging the buffered biomass gasification gas, and the gas inlet 121 and the gas outlet 124 are separately arranged, so that the biomass gasification gas can fully remove tar through the filter layer 128, and the tar removal effect is improved.

As shown in fig. 5-6, for better absorbing tar in the biomass gasification gas, it is ensured that the tar content in the gas entering the generator set 15 meets the requirement, the biomass gasification gas needs to pass through the filter layer 128 to physically remove tar, the filter layer 128 includes a nano material bag, a kaolin material bag and an activated carbon material bag which are sequentially stacked from top to bottom in the inner cavity, each material bag is in a shape adapted to the inner cylinder 125, the filter layer 128 is provided with multiple layers, and the filter layer 128 is provided with 2 layers in this embodiment. The technology of combining treatment materials such as activated carbon, kaolin, nano materials and the like is adopted, and the impurities such as tar, moisture, dust and the like in the biomass gas after the biomass gas is subjected to spray washing are further removed in a physical mode, so that the tar content in the gas meets the requirement of entering the generator set 15, the overhaul time interval of the generator set 15 is prolonged, the service life of the generator set 15 is prolonged, and the utilization value of the biomass gas is improved.

As shown in fig. 5-6, in order to discharge the filtered biomass gasification gas through the gas outlet 124, the inner chamber is communicated with the outer chamber through an aeration channel 126 on the lower side of the inner cylinder 125 and below the filter layer 128, the aeration channel 126 comprises a porous partition plate 126b connected to the inner wall of the inner cylinder 125, the filter layer 128 is mounted on the porous partition plate 126b, preferably, the porous partition plate 126b is arranged in a ring shape in the present embodiment, a plurality of vent holes 126a are arranged on the circumference of the lower side of the wall of the inner cylinder 125, and the biomass gasification gas passes through the filter layer 128 and is released into the outer chamber through the vent holes 126a via the porous partition plate 126.

As shown in fig. 5 to 6, in order to make the biomass gasified fuel gas entering the outer cavity properly buffered and ensure that the pressure of the gasified fuel gas in the outer cavity is kept stable, the gas outlet 124 is arranged on the upper side of the cylindrical portion, after the biomass gasified fuel gas enters the outer cavity through the ventilation channel 126, the biomass gasified fuel gas can be properly buffered from bottom to top, which is beneficial to keeping the pressure of the gasified fuel gas stable, and finally the biomass gasified fuel gas is discharged from the gas outlet 124 on the upper side of the cylindrical portion.

As shown in fig. 5 to 6, in order to inspect and maintain the biomass gasification gas physical tar removal device, especially the filter layer 128, the lower cylinder cover is provided with an access opening 127, and the filter layer 128 can be inspected and maintained through the access opening 127.

In the present embodiment, as shown in fig. 2 to 4, a biomass gasification furnace 8 of a biomass gasification production facility using livestock and poultry manure as a raw material includes a furnace body 814, an upper end cover is disposed at an upper end of the furnace body 814, the upper end cover is provided with an air inlet 81 and a charging material inlet 82, a connecting cylinder 811 is mounted at a lower end of the furnace body 814, and preferably, the lower end of the furnace body 814 and the connecting cylinder 811 are coaxially mounted in the present embodiment; the inside furnace body 814 end that is close to of connecting cylinder 811 gyration is installed the grate 83, and the grate 83 realizes furnace body 814 space and connecting cylinder 811 spatial separation, is equipped with out the carbon hole on the grate 83, the grate 83 is connected with drive grate 83 pivoted drive mechanism 84, and the air inhales furnace body 814 from air inlet 81, from last to down through the reaction layer, the reaction layer divide into from the top down: the biomass fuel gas is generated through a drying layer, a pyrolysis layer, an oxidation layer and a reduction layer, wherein the reduction layer is mainly animal manure biomass carbon and is in contact with the grate 43, the reaction temperature of the drying layer is set to be below 300 ℃, the reaction temperature of the pyrolysis layer is set to be 800-; the wall of the connecting cylinder 811 is provided with a gas outlet 85, the gas outlet 85 is connected with a negative pressure fan 81, so that a negative pressure environment is formed in the furnace body 814, biomass gas is led out and air is sucked, the lower end of the connecting cylinder 811 is connected with a carbon deposition chamber 812, preferably, in the embodiment, a conical space is arranged in the carbon deposition chamber 812, the large-conical-diameter end of the conical space faces one side of the connecting cylinder 811, and the conical space can prevent biomass carbon from being deposited in the carbon deposition chamber 812, so that the biomass carbon can be smoothly output; the lower end of the carbon deposition chamber 812 is connected with a carbon discharging mechanism 86 of biomass carbon.

As shown in fig. 2-4, in order to realize a larger contact area between the livestock and poultry manure and the grate 83, and under the action of rotation of the grate 83, carbon discharge from the gasification furnace is smooth, and carbon discharge speed is high, a conical surface is convexly arranged on one end of the grate 83 facing the furnace body 814, and carbon discharge holes are arranged on the conical surface; the contact area between the livestock manure and the grate 83 can be increased by the conical surface, and the biomass carbon of the livestock manure can enter the carbon deposition chamber 812 from the carbon outlet by the quick rotation of the grate 83.

As shown in fig. 2-4, in order to realize the rotation of the grate 83, the transmission mechanism 84 includes a large gear ring 87 installed on the periphery of the grate 83 and a small gear 89 engaged with the large gear ring 87, preferably, the grate 83 is fixedly connected with the large gear ring 87, the small gear 89 is connected with a sprocket 810 through a key shaft, in this embodiment, the sprocket 810 is driven by a motor to move, the motor realizes the rotation of the grate 83 through the transmission mechanism 44, so that the livestock and poultry manure can be uniformly distributed under the rotation of the grate 83, the livestock and poultry manure is not easy to bridge and accumulate, the gasification reaction is uniform, the gasification efficiency is high, and the generation of wood tar and nitrogen is effectively reduced.

As shown in fig. 2 to 4, in order to position the fire grate 83 and ensure that the fire grate 83 does not move axially along the furnace body 814 during the rotation process, the upper end of the large gear ring 87 is provided with an upper limit portion 813 installed inside the furnace body 814, the lower end of the large gear ring 87 is provided with a lower limit portion 88 installed inside the connecting cylinder 811, and a ball is installed between the lower limit portion 88 and the large gear ring 87, and the ball facilitates the rotation of the large gear ring 87, so that the rotation of the fire grate 83 can be realized.

As shown in fig. 2-4, in order to output the biomass carbon in the carbon deposition chamber 812 to the gasification furnace, so as to conveniently and quickly produce the biomass carbon with a considerable additional value, so as to realize co-production of carbon gas and improve the utilization efficiency of biomass energy, the carbon discharge mechanism 86 includes a carbon discharge passage 861 communicated with the carbon deposition chamber 812, a spiral output shaft 862 is installed in the carbon discharge passage 861 along the axial direction thereof, an output blade 863 is installed on the spiral output shaft 862 in a spiral manner, the output blade 863, the spiral output shaft 862 and the carbon discharge passage 861 form a spiral conveying passage of the biomass carbon, and a power mechanism is installed at one end of the spiral output shaft 862, and in a preferred embodiment, the power mechanism is a motor.

In this embodiment, the slicer 1, the belt conveyor 3, the rotary dryer 4, the cyclone 5a, the induced draft fan 5d and the bucket elevator 31 are all the prior art, and will not be described herein again.

The working process of the invention is as follows:

a. the raw material livestock manure is put into a feed inlet of a dehydrator 2, redundant water in the raw material livestock manure is preliminarily removed under the extrusion action of a spiral device in the dehydrator 2, and then a discharge port of the dehydrator 2 is discharged onto a belt conveyor 3 and conveyed into a dryer 4 through the belt conveyor 3;

b. livestock manure entering a dryer 4 is repeatedly picked up under the action of a backflow blade inside the dryer 4, hot air is provided for the dryer 4 by a particle burner 1a and a secondary combustion chamber 1b, the livestock manure is gradually dried in water and is discharged from a discharge port of the dryer 4 onto a belt conveyor 3, dust-containing tail gas generated by drying the livestock manure is discharged by the dryer 4, the tail gas enters a cyclone dust collector 5a under the action of an induced draft fan 115d to remove large particle impurities in the tail gas and reduce the temperature of the tail gas, then the tail gas enters a pulse dust collector 5b to further remove particle impurities in the tail gas, then the tail gas enters a photo-oxidation catalyst 5c to remove atmospheric pollutants such as hydrogen sulfide, ammonia, mercaptan and the like in the tail gas, and remove various foul odors, and the tail gas up to the standard is treated and discharged from a chimney of the induced draft fan 115 d;

c. the livestock manure passing through the belt conveyor 3 is conveyed to a granulator, the granulator processes the livestock manure into granules and conveys the granules to a buffer storage bin 7 through the belt conveyor 3;

d. when the livestock and poultry manure particles in the cache bin 7 are accumulated to a certain amount, the livestock and poultry manure particles are output by the output end of the cache bin 7 to the belt conveyor 3 and are conveyed to the feed inlet of the bucket elevator 31 through the belt conveyor 3, and then the livestock and poultry manure particles are conveyed to the feed inlet of the fixed bed biomass gasification furnace 8 by the bucket elevator 31;

e. livestock and poultry manure particles enter the furnace body from a charging material inlet, air is sucked into the furnace body from an air inlet, the livestock and poultry manure particles respectively pass through four different temperature reaction stages of a drying layer, a pyrolysis layer, an oxidation layer and a reduction layer in the furnace body, and biomass gas can be output from a gas outlet after the reaction is finished;

f. the biomass gas enters a cyclone dust collector 5a under the action of a Roots blower 11 to remove large particle impurities in the gasified gas and reduce the temperature of the gasified gas, then enters a primary spraying purifier 9a and a secondary spraying purifier 9c to remove tar therein and further reduce the temperature of the gasified gas, then enters a gas-liquid separator 10 to separate moisture therein, then enters a secondary physical tar remover 12 through the Roots blower 11 to further remove tar, moisture and particle impurities therein to obtain clean biomass gas, and the clean biomass gas is conveyed to a gas storage tank through a pipeline. Clean gasification gas in the gas holder can be used for generating set 15 electricity generation, can be used for the heating of hot-blast furnace 14, and generating set 15 and hot-blast furnace 14 all are equipped with tail gas SOx/NOx control catalytic unit, ensure that tail gas emission is up to standard.

The invention is a biomass gasification production device taking animal manure as raw material, aiming at the animal manure as raw material, the animal manure is dehydrated through a dehydrator 2, then is dried by a dryer 4, the dried animal manure is molded and manufactured through a molding device 6, and then is conveyed to a biomass gasification furnace 8 for treatment, the biomass gasification furnace 8 enables the contact area of the material and a grate to be larger, under the action of rotation of the grate, the gasification furnace smoothly discharges carbon, the carbon discharging speed is high, the manpower input can be reduced, and the working efficiency is improved; the produced biomass gas passes through the first-stage tar removal equipment 9 and the second-stage tar removal equipment in sequence through the gas outlet to obtain clean biomass gas, the energy in the livestock and poultry excrement is fully recycled in the whole process, no redundant waste residue is produced, the tail gas meets the emission requirement, the environmental problems caused by natural fermentation of the livestock and poultry excrement are reduced, the breeding cost of dairy cows is reduced, the redundant benefit is increased, and the method is suitable for being used in livestock and poultry large-scale and intensive farms in China, Europe and other areas.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and unless otherwise stated the above words are not intended to have a special meaning.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.