CN110819389A - Biomass gasification production equipment and production method taking livestock and poultry manure as raw material - Google Patents

Abstract

The invention discloses a biomass gasification production equipment and a production method using livestock and poultry manure as raw materials. The feeding end of the forming device is connected to the feeding end of the forming device through the second conveying device, the discharging end of the forming device is connected to the feeding end of the buffer silo through the third conveying device, and the discharging end of the buffer silo is connected to the feeding end of the biomass gasifier through the fourth conveying device. At the end, the biomass gasifier is provided with a gas outlet, and the gas outlet is connected to the first-stage tar removal equipment and the second-stage tar removal equipment through pipelines in turn, and the first-stage tar removal equipment and the second-stage tar removal equipment are connected with a The gas-liquid separator, the output end of the second-stage tar removal equipment is connected to the gas storage device through a pipeline; the present invention does not generate excess waste residue, and the tail gas meets the emission requirements, which not only reduces the environmental problems caused by the natural fermentation of livestock and poultry manure, but also reduces the While reducing the cost of dairy farming, increase excess income.

Description

A kind of biomass gasification production equipment and production method using livestock and poultry manure as raw material

technical field

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

Background technique

In recent years, with the development of the economy and the improvement of people's living standards, the demand for livestock and poultry products has continued to increase, and the scale of production has continued to expand. At present, the livestock and poultry breeding model in my country has shifted from each household to large-scale and intensive breeding; In some European countries and regions, the degree of intensive livestock and poultry breeding has developed to a relatively high level. However, with the expansion of production scale, the discharged manure brings more and more problems, which seriously affect the health of humans and animals. And the sustainable development of livestock and poultry breeding industry; secondly, the massive accumulation of manure will bring great pressure to environmental protection.

A survey conducted by the State Environmental Protection Administration in 23 provinces and cities across the country found that 90% of the large-scale livestock and poultry farms in the country have not undergone environmental assessments, and 60% of the farms lack necessary pollution prevention and control measures. The main source of non-point source pollution in rural areas. The problems caused by livestock and poultry manure mainly include the following aspects: ① Livestock and poultry manure contains harmful gases such as hydrogen sulfide, ammonia, and mercaptan. Immunity declines; ② Livestock and poultry manure and flushing water are discharged in large quantities if they are not treated, and a large amount of harmful substances such as nitrogen and phosphorus are dissolved in water, which leads to water pollution and seriously affects the drinking water safety of humans and animals; ③ Livestock and poultry If manure is directly used in farmland, it will cause soil pollution, and it will cause harm by polluting water sources and dust, etc., and adversely affect the farm and surrounding people; ④ Livestock and poultry manure is piled up everywhere, and the stench is high, and mosquitoes and flies breed, which will contaminate food. , feed and spread various diseases.

Livestock manure is a valuable resource, especially for dairy cows. Since the main food of dairy cows is grass, corn, cottonseed, etc., the content of cellulose and lignin in livestock and poultry manure is close to that of rice straw, the content of hemicellulose is lower than that of rice straw, and the ash content of livestock and poultry manure is slightly higher than that of rice straw. The high calorific value of dry-based livestock and poultry manure is equivalent to that of straw, so livestock and poultry manure has a certain gasification potential. Using livestock manure as raw material and adopting our company's fixed-bed polygeneration gasification technology, the nitrogen and sulfur compounds in livestock manure can be treated without polluting the environment. Gas, livestock and poultry manure charcoal two products. The use of gasification gas: ① can drive the generator set to generate electricity; ② can supply heat to the livestock and poultry breeding shed; ③ can drive the boiler to provide steam. Uses of livestock manure charcoal: ① It can be used as soil conditioner and slow-release fertilizer; ② It can be used for paving roadbed. The use of our company's fixed-bed polygeneration gasification technology can not only reduce the greenhouse effect and environmental pollution caused by the accumulation of livestock and poultry manure, but also reduce the cost of breeding dairy cows and increase the economic benefits of breeding dairy cows, and maximize the utilization of resources. To achieve the goal of emission reduction and pollution reduction.

SUMMARY OF THE INVENTION

The technical scheme that the object of the present invention is to take for solving the above-mentioned problems is:

A biomass gasification production equipment using livestock and poultry manure as raw material, including a dehydrator, a drying device, a molding device, a buffer silo, a biomass gasification furnace, a gas-liquid separator, a first-stage tar removal equipment and a first-stage tar removal device. Two-stage tar removal equipment, the output end of the dehydrator is connected to the feed end of the drying device through the first conveying device, the discharge end of the drying device is connected to the feeding end of the forming device through the second conveying device, and the discharging end of the forming device The feed end of the buffer silo is communicated with the third conveying device, and the discharge end of the buffer silo is communicated with the feed end of the biomass gasifier through the fourth conveying device, and the biomass gasifier is provided with a gas outlet. The gas outlet is sequentially connected to the first-stage tar removal equipment and the second-stage tar removal equipment through pipelines, and a gas-liquid separator is communicated between the first-stage tar removal equipment and the second-stage tar removal equipment, and the second-stage tar removal equipment The output end is connected to the gas storage device through a pipeline.

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

Further, the fourth conveying device includes a belt conveyor connected with the output end of the storage bin, and the output end of the belt conveyor is connected with a bucket elevator.

Further, the drying device includes a dryer and a burner mechanism connected to the dryer, the burner mechanism includes a particle burner and a secondary combustion chamber, one end of the secondary combustion chamber is connected to the particle burner, and the secondary combustion chamber is connected to the particle burner. The other end is connected with a dryer; the dryer is also connected with an exhaust gas treatment device.

Further, the exhaust gas treatment device includes a cyclone dust collector connected with the exhaust gas outlet of the dryer, the output end of the cyclone dust collector is connected with a pulse dust collector, and the output end of the pulse dust collector is connected with a photo-oxygen catalyst, and the photo-oxygen catalyst The output end of the device is connected with an induced draft fan.

Further, the forming device is a granulator.

Further, the first-stage tar removal equipment includes a first-stage spray purifier, the first-stage spray purifier is connected to the gas outlet on the biomass gasifier, and the first-stage spray purifier is connected to the biomass gasifier. A cyclone dust collector is arranged between the gas outlets of the first-stage spray purifier; the output end of the first-stage spray purifier is connected with a second-stage spray purifier, and the output end of the second-stage spray purifier is connected with a gas-liquid separator. The shower purifier and the secondary spray purifier are respectively communicated with the circulating water pool.

Further, the second-stage tar removal equipment includes a fan communicated with the output end of the gas-liquid separator, and the other end of the fan is connected with a second-stage physical tar degreaser through a pipeline, and the second-stage physical tar degreaser is connected to the pipeline. Two are arranged in parallel, and valves are respectively connected to the inlet end and the outlet end of each secondary physical tar remover.

Further, the secondary physical tar remover includes an outer cylinder, an inner cylinder is installed inside the outer cylinder, and the upper and lower ends of the inner cylinder are respectively connected to the interior of the outer cylinder to isolate the inner part of the outer cylinder into an inner cavity and an outer cavity. , the upper end of the outer cylinder is connected with an air inlet that communicates with the inner cavity, a filter layer is installed in the inner cavity, and the upper side of the outer cylinder is provided with a storage port that communicates with the inner cavity for putting in and taking out the filter layer; The side wall of the cylinder body is provided with an air outlet which communicates with the outer cavity; the inner cavity and the outer cavity are communicated with the ventilation passage below the filter layer and provided on the lower side of the inner cylinder.

A biomass gasification production method using livestock and poultry manure as raw material based on the above-mentioned equipment, comprising:

a. Put the raw livestock and poultry manure into the feed port of the dehydrator. Under the action of the screw device in the dehydrator, the excess water in the raw livestock and poultry manure is initially removed, and then the discharge port of the dehydrator is discharged to the belt conveyor. It is transported to the dryer through the belt conveyor;

b. The livestock and poultry manure entering the dryer is repeatedly picked up under the action of the reverse flow blades inside the dryer. The pellet burner and the secondary combustion chamber provide hot air for the dryer, and the livestock and poultry manure is gradually dried in the moisture. , from the discharge port of the dryer to the belt conveyor, the dryer discharges the dust-containing exhaust gas produced by drying livestock and poultry manure, and the exhaust gas enters the cyclone dust collector under the action of the induced draft fan to remove the large particles in the exhaust gas. , reduce the temperature of the exhaust gas, and then the exhaust gas enters the pulse dust collector to further remove the particulate impurities in the exhaust gas, and then the exhaust gas enters the photo-oxygen catalyst to remove hydrogen sulfide, ammonia, mercaptans and other atmospheric pollutants in the exhaust gas, and remove various Bad smell, the exhaust gas that meets the standard is discharged from the chimney of the induced draft fan;

c. The livestock and poultry manure through the belt conveyor is transported to the granulator, and the granulator processes the livestock and poultry manure into granules and transports it to the storage silo through the belt conveyor;

d. When the livestock and poultry manure particles in the buffer storage bin have accumulated to a certain amount, the output end of the buffer storage bin outputs the livestock and poultry manure particles to the belt conveyor, and then conveys them to the feeding port of the bucket elevator through the belt conveyor, and then the bucket elevator. The elevator transports the livestock and poultry manure particles to the feed port of the fixed-bed biomass gasifier;

e. The livestock and poultry manure particles enter the furnace body from the charging inlet, and the air is sucked into the furnace body from the air inlet. In the temperature reaction stage, the biomass gas will be output from the gas outlet after the reaction is completed;

f. Under the action of the Roots fan, the biomass gas enters the cyclone dust collector to remove the large particles of impurities in the gasification gas, and reduce the temperature of the gasification gas, and then the biomass gas enters the primary spray purifier and the secondary spray The purifier is sprayed to remove the tar and further reduce the temperature of the gasification gas, and then the biomass gas enters the gas-liquid separator to separate the moisture, and then the biomass gas enters the secondary physical tar remover through the roots blower, and further Remove the tar, moisture and particulate impurities to obtain clean biomass gas, and the clean biomass gas is transported to the gas storage device through pipelines.

The beneficial effects that the present invention has are:

1. The present invention is a biomass gasification production equipment using livestock and poultry manure as a raw material, and for livestock and poultry manure as a raw material, the livestock and poultry manure is dehydrated by a dehydrator, and then dried by a dryer, and the dried livestock and poultry manure is used. The poultry manure is formed and manufactured by the molding device, and then sent to the biomass gasifier for processing. The biomass gasifier makes the contact area between the material and the grate larger. The carbon output speed is fast, which can reduce manpower input and improve work efficiency; the generated biomass gas passes through the first-stage tar removal equipment and the second-stage tar removal equipment to obtain clean biomass gas through the gas outlet. The energy in the manure is fully utilized as a resource, no excess waste residue is generated, and the tail gas meets the emission requirements, which not only reduces the environmental problems caused by the natural fermentation of livestock and poultry manure, but also reduces the cost of dairy cattle breeding and increases the excess income, which is suitable for my country and Europe. The use of large-scale and intensive livestock and poultry farms in other regions.

2. The first tar removal equipment used in the present invention purifies and cools the generated biomass gas, so as to avoid the high temperature biomass gas with tar from affecting the life and cleanliness of the transmission pipeline.

3. The second-stage tar removal equipment adopted in the present invention has a simple structure, is easy to operate, and is easy to use and maintain; it uses a physical method to remove tar, does not generate waste water and waste gas, and is safe and reliable. The inner cavity is used to filter the biomass gasification gas, and the outer cavity is mainly used to buffer the filtered biomass gasification gas and then discharge it. In this way, the air inlet and the gas outlet are set separately, so that the biomass gasification gas can pass through the filter layer. Fully remove tar, improve the effect of tar removal, provide clean gasification gas for the generator set, and prolong the service life of the generator set.

4. In the present invention, a tail gas treatment device is used, and the secondary dust removal technology combined with cyclone dust removal and pulse dust removal is used to treat the dust-containing particles in the exhaust gas of the dryer to below the emission requirements; Hydrogen sulfide, ammonia, mercaptans and other air pollutants, and remove various odors, so that the tail gas generated in the process of biomass gasification of livestock and poultry manure is treated to reduce environmental pollution and meet the emission requirements. Require.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Figure 2 is a schematic structural diagram of a biomass gasifier;

Fig. 3 is a partial schematic diagram of the internal structure of the biomass gasifier;

Figure 4 is an enlarged view of the internal structure A of the biomass gasifier;

Fig. 5 is the structural representation of the secondary physical detarizer of the present invention;

FIG. 6 is a sectional view of the partial structure of the secondary physical tar remover of the present invention.

Detailed ways

The present invention is further described below in conjunction with the accompanying drawings.

As shown in Figure 1, a biomass gasification production equipment using livestock and poultry manure as raw material includes a dehydrator 2, and the output end of the dehydrator 2 is connected to the feed end of the drying device through the first conveying device. The discharge end is connected to the feed end of the forming device 6 through the second conveying device. Preferably, the forming device 6 in this embodiment is a granulator; the discharging end of the forming device 6 is connected to the buffer silo through the third conveying device The feed end of 7, the discharge end of the buffer silo 7 is connected to the feed end of the biomass gasifier 8 through the fourth conveying device. The biomass gasifier 8 is provided with a gas outlet 85, and the gas outlet 85 is sequentially The first-stage tar removal equipment 9 and the second-stage tar removal equipment are connected through a pipeline, and a gas-liquid separator 10 is connected between the first-stage tar removal equipment 9 and the second-stage tar removal equipment, and the second-stage tar removal equipment The output end of the gas storage device 13 is connected to the 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 conveying devices The fourth conveying device includes a belt conveyor 3 connected to the output end of the buffer silo 7, and a bucket elevator 31 is connected to the output end of the belt conveyor 3. The use of the bucket elevator 31 can reduce the difficulty of conveying, In addition, space is saved, and the dried livestock and poultry manure is transported into the fixed-bed downdraft biomass gasifier 8 by means of vertical transport.

As shown in FIG. 1 , in this embodiment, in order to dry the livestock and poultry feces to facilitate subsequent processing, the drying device includes a dryer 4 and a combustion furnace mechanism 1 connected to the dryer 4, and the combustion The 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 a dryer 4; An exhaust gas treatment device 5 is connected.

As shown in Figure 1, in order to realize the treatment of the tail gas generated during the biomass gasification of livestock and poultry manure and reduce the pollution to the environment, it is necessary to treat the tail gas generated during the processing of livestock and poultry manure. The device 5 includes a cyclone precipitator 5a which is communicated with the exhaust gas discharge port of the dryer 4. The output end of the cyclone precipitator 5a is communicated with a pulse precipitator 5b, and the output end of the pulse precipitator 5b is communicated with a photo-oxygen catalyst 5c. The output end of the catalyst 5c is connected with an induced draft fan 5d, and the induced draft fan 5d is used to suck the exhaust gas discharged from the exhaust gas outlet of the dryer 4 to the cyclone dust collector 5a, the pulse dust collector 5b and the photo-oxygen catalyst 5c in turn. The fan 5d discharges, and the exhaust gas treatment device 5 reduces the pollution to the air caused by the exhaust gas generated during the processing of livestock and poultry manure.

As shown in Figure 1, in order to purify and cool the generated biomass gas, so as to avoid the high-temperature biomass gas with tar from affecting the life and cleanliness of the pipeline, it is necessary to pass the generated biomass gas through the first stage. The first-stage tar-removing equipment 9 performs treatment. The first-stage tar-removing equipment 9 includes a first-stage spray purifier 9a, and the first-stage spray purifier 9a is connected to the gas outlet on the biomass gasifier 8. The first-stage spray purifier A cyclone 5a is provided between the purifier 9a and the gas outlet on the biomass gasifier 8; the output end of the primary spray purifier 9a is connected with a secondary spray purifier 9c, and the secondary spray purifier 9c The output end of the device 9c is connected to the gas-liquid separator 10. The primary spray purifier 9a and the secondary spray purifier 9c are respectively connected to the circulating water pool 9b. The spray purifier 9c provides circulating water, cools the high temperature biomass gas, and removes tar and particulate impurities in the biomass gas.

As shown in FIG. 1 , in order to carry out secondary purification of the generated biomass gas to ensure that the biomass gas entering the gas storage device 13 has less impurities and lower tar content, the second-stage tar removal equipment includes a combination of gas and liquid. The Roots blower 11 is connected to the output end of the separator 10, and the other end of the Roots blower 11 is connected with a secondary physical tar remover 12 through a pipeline, and two secondary physical tar removers 12 are arranged in parallel on the communicating pipeline. , the inlet end and the outlet end of the secondary physical tar remover 12 are respectively connected with valves; preferably, the valves are electric butterfly valves. Two secondary physical tar removers 12 are used in parallel operation. During normal operation, the valve of one of the secondary physical tar removers 12 is opened, and the valve of the other is closed. When maintenance of the secondary physical tar 12 is required , close the valve of the secondary physical tar remover 12 in operation, and open the valve of the other unit to continue working, so that when the equipment is maintained, the biomass gasifier 8 can keep running continuously without shutting down, improving the use efficiency of the whole set of equipment.

In this embodiment, as shown in FIGS. 5-6 , the secondary physical tar remover 12 includes an outer cylinder 123. Preferably, in this embodiment, the outer cylinder 123 includes a middle cylindrical portion and a The upper cylinder cover and the lower cylinder cover are respectively connected to the upper and lower ends of the cylindrical part; the inner cylinder 125 is installed inside the outer cylinder 123, and the upper and lower ends of the inner cylinder 125 are respectively connected with the outer cylinder 123. The inner part of 123 is separated into an inner cavity and an outer cavity, the upper end of the outer cylinder 123 is connected with an air inlet 121 communicating with the inner cavity, a filter 128 is installed in the inner cavity, and the filter layer 128 leaves a buffer space from the top of the inner cavity , it is convenient for the biomass gasification gas coming in from the air inlet 121 to be buffered and fully filtered through the filter layer 128, and the filter layer 128 leaves a space from the bottom of the inner cavity to facilitate the discharge of the filtered biomass gasification gas; the outer cylinder body The upper side of the 123 is provided with a storage port 122 that communicates with the inner cavity for putting in and taking out the filter layer. In this embodiment, the storage port 122 is provided on the upper cylinder cover. Preferably, the storage port 122 is provided with a plurality of; The side wall of the outer cylinder 123 is provided with an air outlet 124 that communicates with the outer cavity; the inner cavity and the outer cavity are communicated with the ventilation passage 126 under the filter layer 128 and located on the lower side of the inner cylinder 125, and the device is provided with an inner cavity and an outer cavity , the inner cavity is used to filter the biomass gasification gas, and the outer cavity is mainly used to buffer the filtered biomass gasification gas and then discharge it, so that the air inlet 121 and the gas outlet 124 are set separately, so that the biomass gasification gas passes through The filter layer 128 can sufficiently remove tar and improve the tar removal effect.

As shown in Figure 5-6, in order to better absorb the tar in the biomass gasification gas and ensure that the tar content in the gas entering the generator set 15 meets the requirements, the biomass gasification gas needs to pass through the filter layer 128 for physical tar removal , the filter layer 128 includes a nano-material bag, a kaolin material bag, and an activated carbon material bag, which are stacked in order from top to bottom in the inner cavity. The shape of each material bag is adapted to the inner cylinder 125. The filter layer 128 is provided with multiple layers. In this embodiment, the filter layer 128 is provided with two layers. Using the technology of combining activated carbon, kaolin, nanomaterials and other processing materials, the tar, moisture, dust and other impurities in the biomass gas after spraying and washing are further removed by physical means, so as to ensure that the tar content in the gas meets the requirements for entering the generator set 15. The maintenance time interval of the generator set 15 is prolonged, the service life of the generator set 15 is prolonged, and the utilization value of biomass gas is improved.

As shown in FIGS. 5-6 , in order to discharge the filtered biomass gasification gas through the air outlet 124 , the inner cavity and the outer cavity are communicated through the ventilation channel 126 located on the lower side of the inner cylinder 125 and below the filter layer 128 . The channel 126 includes a porous isolation plate 126b connected to the inner wall of the inner cylinder 125, and the filter layer 128 is installed on the porous isolation plate 126b. A plurality of ventilation holes 126a are arranged on the circumference, and the biomass gasification gas passes through the filter layer 128 and is released from the ventilation holes 126a into the outer cavity through the porous isolation plate 126b.

As shown in Figures 5-6, in order to properly buffer the biomass gasification gas entering the outer cavity and ensure that the gasification gas pressure in the outer cavity remains stable, the gas outlet 124 is arranged on the upper side of the cylindrical portion, and the biomass gas After the gasification gas enters the outer cavity through the ventilation channel 126, the biomass gasification gas can be properly buffered from the bottom to the top, which is beneficial to keep the gasification gas pressure stable, and finally the biomass gasification gas is discharged from the gas outlet 124 on the upper side of the cylinder.

As shown in Figures 5-6, in order to inspect and maintain the biomass gasification gas physical detar removal equipment, especially the filter layer 128, an inspection port 127 is provided on the lower cylinder cover, and the inspection port 127 can be used for inspection and maintenance. The filter layer 128 is inspected and maintained.

In this embodiment, as shown in Figures 2-4, a biomass gasification furnace 8 of biomass gasification production equipment using livestock and poultry manure as raw material includes a furnace body 814, and an upper end cover is provided on the upper end of the furnace body 814 , the upper end cover is provided with an air inlet 81 and a charge inlet 82, and a connecting cylinder 811 is installed at the lower end of the furnace body 814. Preferably, in this embodiment, the lower end of the furnace body 814 is installed coaxially with the connecting cylinder 811; A grate 83 is rotatably installed inside the connecting cylinder 811 near the end of the furnace body 814. The grate 83 separates the space of the furnace body 814 from the space of the connecting cylinder 811. The grate 83 is provided with a carbon outlet, and the grate 83 is connected with a drive. The transmission mechanism 84 for the rotation of the grate 83, the air is sucked into the furnace body 814 from the air inlet 81, and passes through the reaction layer from top to bottom, and the reaction layer is divided into: drying layer, pyrolysis layer, oxidation layer, reduction layer from top to bottom , the generated biomass gas, the reducing layer is mainly livestock and poultry manure biomass carbon, and is in contact with the grate 43, the reaction temperature of the drying layer is set to be below 300 ° C, the reaction temperature of the pyrolysis layer is set to 300-800 ° C, and the oxidation The layer reaction temperature is set to 800-1000°C, and the livestock and poultry manures are reacted in different reaction layers in the furnace body 814 to finally form the reduction layer of livestock and poultry manure biomass carbon, which realizes the change from livestock and poultry manure to biomass gas and livestock and poultry manure. Biomass carbon; a gas outlet 85 is opened on the cylinder wall of the connecting cylinder 811, and the gas outlet 85 is connected with a negative pressure fan 81, thereby forming a negative pressure environment in the furnace body 814, realizing the export of biomass gas and the inhalation of air , the lower end of the connecting cylinder 811 is connected with a carbon deposit chamber 812. Preferably, in this embodiment, the carbon deposit chamber 812 is provided with a conical space inside, and the large cone diameter end of the conical space faces the side of the connecting cylinder 811. The space can prevent biomass carbon from accumulating in the carbon deposition chamber 812, so that the biomass carbon can be output smoothly; the lower end of the carbon deposition chamber 812 is connected with a carbon output mechanism 86 for biomass carbon.

As shown in Figures 2-4, in order to achieve a larger contact area between livestock and poultry manure and the grate 83, and under the action of the grate 83 rotating, the gasifier emits carbon smoothly and at a high speed, the grate 83 One end of the furnace body 814 protrudes with a conical surface, and the carbon outlet holes are arranged on the conical surface; the conical surface can increase the contact area between the livestock manure and the grate 83, and the rapid rotation of the grate 83 can realize the production of livestock manure. The material carbon enters the carbon deposition chamber 812 from the carbon outlet hole.

As shown in Figures 2-4, in order to realize the rotation of the grate 83, the transmission mechanism 84 includes a large ring gear 87 mounted on the outer circumference of the grate 83 and a pinion 89 matched with the large ring gear 87. Preferably, the grate 83 It is fixedly connected with the large ring gear 87, and the pinion 89 is connected with a sprocket 810 through a key shaft. In this embodiment, the sprocket 810 is driven by a motor to move. Under the rotation of the grate 83, the poultry manure is evenly distributed, 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 Figures 2-4, in order to realize the positioning of the grate 83 and ensure that the grate 83 does not move axially along the furnace body 814 during the rotation, the upper end of the large ring gear 87 is provided with a The upper limit part 813 inside the body 814, the lower end of the large ring gear 87 is provided with a lower limit part 88 installed inside the connecting cylinder 811, and a ball is installed between the lower limit part 88 and the large ring gear 87, and the ball is beneficial to the large ring gear 87 is rotated so that the grate 83 can be rotated.

As shown in Figure 2-4, in order to realize the output of biomass carbon in the carbon deposition chamber 812 to the gasifier, realize the convenient and quick production of biomass carbon with considerable added value, realize the co-production of carbon and gas, and improve the efficiency of biomass energy. To utilize efficiency, the carbon outlet mechanism 86 includes a carbon outlet channel 861 that communicates with the carbon deposition chamber 812 , a screw output shaft 862 is installed in the carbon outlet channel 861 along its axial direction, and an output blade is screwed on the screw output shaft 862 863, the output blade 863, the screw output shaft 862 and the carbon outlet channel 861 form a screw conveying channel for biomass carbon, and a power mechanism is installed at one end of the screw output shaft 862. Preferably, the power mechanism in this embodiment is: motor.

In this embodiment, the slicer 1, the belt conveyor 3, the tumble dryer 4, the cyclone 5a, the induced draft fan 5d and the bucket elevator 31 are all in the prior art, and will not be repeated here.

The working process of the present invention is:

a. Put the raw livestock and poultry manure into the feed port of the dehydrator 2. Under the action of the screw device in the dehydrator 2, the excess water in the raw livestock and poultry manure is initially removed, and then the discharge port of the dehydrator 2 is discharged to the belt. On the conveyor 3, it is transported to the dryer 4 through the belt conveyor 3;

b. The livestock and poultry manure entering the dryer 4 is repeatedly picked up under the action of the reverse flow blades inside the dryer 4. The pellet burner 1a and the secondary combustion chamber 1b provide hot air for the dryer 4, and the livestock and poultry manure is stored in the dryer 4. The moisture is gradually dried and discharged from the discharge port of the dryer 4 to the belt conveyor 3. The dryer 4 discharges the dust-containing exhaust gas produced by drying livestock and poultry manure, and the exhaust gas enters the cyclone under the action of the induced draft fan 115d The dust collector 5a removes the large particle impurities in the exhaust gas, reduces the temperature of the exhaust gas, and then the exhaust gas enters the pulse dust collector 5b to further remove the particulate impurities in the exhaust gas, and then the exhaust gas enters the photo-oxygen catalyst 5c to remove the hydrogen sulfide and ammonia in the exhaust gas. , mercaptans and other air pollutants, and remove various odors, and the exhaust gas that meets the standard is discharged from the chimney of the induced draft fan 115d;

c. The livestock and poultry manure through the belt conveyor 3 is transported to the granulator, and the granulator processes the livestock and poultry manure into pellets and transports it to the storage bin 7 through the belt conveyor 3;

d. When the livestock and poultry manure particles in the buffer storage bin 7 are accumulated to a certain amount, the output end of the buffer storage bin 7 outputs the livestock and poultry manure particles to the belt conveyor 3, and then conveys them to the bucket elevator 31 through the belt conveyor 3. Then the bucket elevator 31 transports the livestock and poultry manure pellets to the feed port of the fixed-bed biomass gasifier 8;

e. The livestock and poultry manure particles enter the furnace body from the charging inlet, and the air is sucked into the furnace body from the air inlet. In the temperature reaction stage, the biomass gas will be output from the gas outlet after the reaction is completed;

f. Under the action of the Roots blower 11, the biomass gas enters the cyclone dust collector 5a, removes large particles of impurities in the gasification gas, and reduces the temperature of the gasification gas, and then the biomass gas enters the primary spray purifier 9a and The secondary spray purifier 9c removes the tar and further reduces the temperature of the gasification gas, and then the biomass gas enters the gas-liquid separator 10 to separate the moisture therein, and then the biomass gas enters the secondary stage through the roots blower 11 The physical tar remover 12 further removes tar, moisture and particulate impurities therein to obtain clean biomass gas, and the clean biomass gas is transported to the gas storage tank through pipelines. The clean gasified gas in the gas storage tank can be used for power generation by the generator set 15, and can be used for heating in the hot blast stove 14. The generator set 15 and the hot blast stove 14 are equipped with tail gas desulfurization and denitrification catalytic devices to ensure that the exhaust gas emissions meet the standards.

The present invention is a biomass gasification production equipment using livestock and poultry manure as a raw material. For livestock and poultry manure as a raw material, the livestock and poultry manure is dehydrated by a dehydrator 2, and then dried by a dryer 4. After drying, the livestock and poultry manure is dehydrated. The poultry manure is formed and manufactured by the molding device 6, and then sent to the biomass gasifier 8 for processing. The biomass gasifier 8 makes the contact area between the material and the grate larger. The carbon is smooth and the carbon output is fast, which can reduce manpower input and improve work efficiency; the generated biomass gas passes through the first-stage tar removal equipment 9 and the second-stage tar removal equipment to obtain clean biomass gas through the gas outlet. The whole process The energy in the livestock and poultry manure is fully utilized as a resource, no excess waste residue is generated, and the exhaust gas meets the emission requirements, which not only reduces the environmental problems caused by the natural fermentation of livestock and poultry manure, but also reduces the cost of dairy cattle breeding while increasing excess income. It is suitable for the use of large-scale and intensive livestock and poultry farms in my country and Europe.

This embodiment does not limit the shape, material, structure, etc. of the present invention in any form, and any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention belong to the protection of the technical solution of the present invention scope.

In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or obscuring It means that the referred device or element must have a specific orientation, be constructed and operate for a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

If words such as "first" and "second" are used herein to define components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description , unless otherwise stated, the above terms have no special meaning.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced, but these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. a biomass gasification production equipment with livestock and poultry manure as raw material, it is characterized in that, comprise dehydrator, drying device, molding device, buffer storage silo, biomass gasifier, gas-liquid separator, first The output end of the dehydrator is connected to the feeding end of the drying device through the first conveying device, and the discharging end of the drying device is connected to the feeding end of the molding device through the second conveying device, The discharge end of the molding device is connected to the feed end of the buffer silo through the third conveying device, and the discharge end of the buffer silo is connected to the feed end of the biomass gasifier through the fourth conveying device, and the biomass gasifier A gas outlet is arranged on the gas outlet, and the gas outlet is connected to the first-stage tar removal equipment and the second-stage tar removal equipment in turn through pipelines, and a gas-liquid separator is connected between the first-stage tar removal equipment and the second-stage tar removal equipment. The output end of the second-stage tar removal equipment is connected to the gas storage device through a pipeline. 2. The biomass gasification production equipment using livestock manure as raw material according to claim 1, wherein the first conveying device, the second conveying device and the third conveying device are all belt conveyors . 3. The biomass gasification production equipment using livestock and poultry manure as raw material according to claim 2, wherein the fourth conveying device comprises a belt conveyor connected to the output end of the buffer storage bin, and the belt conveyor The output end is connected with a bucket elevator. 4. A kind of biomass gasification production equipment using livestock and poultry manure as raw material according to claim 3, is characterized in that, described drying device comprises a dryer and a combustion furnace mechanism connected to the dryer, and the combustion furnace The mechanism includes 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 a dryer; the dryer is also connected with a tail gas treatment device. 5. The biomass gasification production equipment using livestock and poultry manure as raw material according to claim 4, wherein the exhaust gas treatment device comprises a cyclone dust collector connected with the exhaust gas outlet of the dryer, and the cyclone The output end of the dust collector is connected with a pulse dust collector, the output end of the pulse dust collector is connected with a photo-oxygen catalyst, and the output end of the photo-oxygen catalyst is connected with an induced draft fan. 6 . The biomass gasification production equipment according to claim 5 , wherein the molding device is a granulator. 7 . 7. The biomass gasification production equipment using livestock and poultry manure as raw material according to claim 6, wherein the first-stage tar removal equipment comprises a first-stage spray purifier, a first-stage spray purification device The first-stage spray purifier is connected with the gas outlet on the biomass gasifier, and a cyclone dust collector is arranged between the first-stage spray purifier and the gas outlet on the biomass gasifier; the output end of the first-stage spray purifier is connected with two A first-stage spray purifier, the output end of the second-stage spray purifier is connected to a gas-liquid separator, and the first-stage spray purifier and the second-stage spray purifier are respectively connected to the circulating water pool. 8. The biomass gasification production equipment using livestock 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, and the fan The other end is connected with a secondary physical tar remover through a pipeline, and two of the secondary physical tar removers are arranged in parallel on the communicating pipelines, and the inlet end and the gas outlet end of each secondary physical tar remover are respectively connected. There are valves. 9 . The biomass gasification production equipment using livestock and poultry manure as raw material according to claim 8 , wherein the secondary physical tar remover comprises an outer cylinder, and an inner cylinder is installed inside the outer cylinder. 10 . The upper and lower ends of the inner cylinder are respectively connected to the interior of the outer cylinder to isolate the inner part of the outer cylinder into an inner cavity and an outer cavity, the upper end of the outer cylinder is connected with an air inlet that communicates with the inner cavity, and a filter is installed in the inner cavity The upper side of the outer cylinder is provided with a storage port that communicates with the inner cavity to put in and take out the filter layer; the side wall of the outer cylinder is provided with an air outlet that communicates with the outer cavity; the inner cavity and the outer cavity pass through the filter The ventilation channels below the layer and provided on the lower side of the inner cylinder communicate with each other. 10. A biomass gasification production method based on the equipment according to claim 9, characterized in that, a. Put the raw livestock and poultry manure into the feed port of the dehydrator. Under the action of the screw device in the dehydrator, the excess water in the raw livestock and poultry manure is initially removed, and then the discharge port of the dehydrator is discharged to the belt conveyor. It is transported to the dryer through the belt conveyor; b. The livestock and poultry manure entering the dryer is repeatedly picked up under the action of the reverse flow blades inside the dryer. The pellet burner and the secondary combustion chamber provide hot air for the dryer, and the moisture of the livestock and poultry manure is gradually dried. , from the discharge port of the dryer to the belt conveyor, the dryer discharges the dust-containing exhaust gas produced by drying livestock and poultry manure, and the exhaust gas enters the cyclone dust collector under the action of the induced draft fan to remove the large particles in the exhaust gas. , reduce the temperature of the exhaust gas, and then the exhaust gas enters the pulse dust collector to further remove the particulate impurities in the exhaust gas, and then the exhaust gas enters the photo-oxygen catalyst to remove hydrogen sulfide, ammonia, mercaptans and other atmospheric pollutants in the exhaust gas, and remove various Bad smell, the exhaust gas that meets the standard is discharged from the chimney of the induced draft fan; c. The livestock and poultry manure through the belt conveyor is transported to the granulator, and the granulator processes the livestock and poultry manure into granules and transports it to the storage silo through the belt conveyor; d. When the livestock and poultry manure particles in the buffer storage bin have accumulated to a certain amount, the output end of the buffer storage bin outputs the livestock and poultry manure particles to the belt conveyor, and then conveys them to the feeding port of the bucket elevator through the belt conveyor, and then the bucket elevator. The elevator transports the livestock and poultry manure particles to the feed port of the fixed-bed biomass gasifier; e. The livestock and poultry manure particles enter the furnace body from the charging inlet, and the air is sucked into the furnace body from the air inlet. In the temperature reaction stage, the biomass gas will be output from the gas outlet after the reaction is completed; f. Under the action of the Roots fan, the biomass gas enters the cyclone dust collector to remove the large particles of impurities in the gasification gas, and reduce the temperature of the gasification gas, and then the biomass gas enters the primary spray purifier and the secondary spray The purifier is sprayed to remove the tar and further reduce the temperature of the gasification gas, and then the biomass gas enters the gas-liquid separator to separate the moisture, and then the biomass gas enters the secondary physical tar remover through the roots blower, and further Remove the tar, moisture and particulate impurities to obtain clean biomass gas, and the clean biomass gas is transported to the gas storage device through pipelines.

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