CN112210409A

CN112210409A - Biogas biological desulfurization device and desulfurization method

Info

Publication number: CN112210409A
Application number: CN202011193891.9A
Authority: CN
Inventors: 尹鹏
Original assignee: Yueyang Fengshuwan Animal Husbandry Co ltd
Current assignee: Yueyang Fengshuwan Animal Husbandry Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-01-12
Anticipated expiration: 2040-10-30
Also published as: CN112210409B

Abstract

A biogas biological desulfurization device comprises a desulfurization tower main body, wherein a first reaction chamber and a second reaction chamber are arranged in the desulfurization tower main body, the first reaction chamber and the second reaction chamber are separated by a partition plate, a gap is reserved between the bottom of the partition plate and the desulfurization tower main body, a first air inlet pipe and a first air flow uniform distribution plate are arranged at the lower part of the first reaction chamber, a one-way valve is arranged on the first air inlet pipe, a first temperature sensor, a first biological filler device and a first anti-sticking wall device are arranged at the upper part of the first air flow uniform distribution plate, the first biological filler device is fixedly connected with a first motor at the top of the first reaction chamber, a spray device is arranged at the upper part of the first reaction chamber, and the spray device is connected with a water pump in the second reaction chamber through a heat exchange pipeline. Thereby avoiding affecting the reaction efficiency of the packing.

Description

Biogas biological desulfurization device and desulfurization method

Technical Field

The invention relates to a desulfurization device, in particular to a biogas biological desulfurization device and a desulfurization method.

Background

The inside longitudinal arrangement of current biological desulfurizing tower has a plurality of layers of packing layer, and the packing layer carries out desulfurization purification to the marsh gas of process in the desulfurizing tower, forms impurity such as elemental sulfur in the packing layer among the purification process, uses the back for a long time, blocks up the packing layer easily, and then reduces the desulfurization effect of packing layer to marsh gas. The existing desulfurizing tower only can pass through the methane, and the packing layers cannot be cleaned one by one. If need wash, need take out all packing layers in proper order, complex operation, it is long consuming time, reduce cleaning efficiency, and then reduced the efficiency that marsh gas purified. Or the top of the desulfurizing tower is washed by flushing water, the water pressure is gradually reduced from top to bottom, and the washing effect of the packing layer at the bottom layer is limited;

for example, Chinese patent publication numbers are: CN201310420956.2 biological desulfurizing tower filler washing unit and washing method, this biological desulfurizing tower filler washing unit, the inside longitudinal arrangement of desulfurizing tower have a plurality of packing layer, including inlet tube, blow off pipe and perforation aeration dish, the inlet tube be located the desulfurizing tower below, the blow off pipe is located the desulfurizing tower bottom, every packing layer below all is provided with the perforation aeration dish, the perforation aeration dish link to each other with the air supply, the dense aeration hole that has in perforation aeration dish below to wash one by one the packing layer, but can not follow the adhesion that reduces elemental sulfur to packing layer and tower wall in the root, still can influence desulfurization efficiency.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a biogas biological desulfurization apparatus, including a desulfurization tower main body, a first reaction chamber and a second reaction chamber are arranged inside the desulfurization tower main body, the first reaction chamber and the second reaction chamber are separated by a partition plate, a gap is left between the bottom of the partition plate and the desulfurization tower main body, a first air inlet pipe and a first air flow uniform distribution plate are arranged at the lower part of the first reaction chamber, a one-way valve is arranged on the first air inlet pipe, a first temperature sensor, a first biological filler device and a first anti-sticking wall device are arranged at the upper part of the first air flow uniform distribution plate, the first biological filler device is fixedly connected with a first motor at the top of the first reaction chamber, a spray device is arranged at the upper part of the first reaction chamber, the spray device is connected with a water pump in the second reaction chamber through a heat exchange pipeline, the heat exchange pipeline is connected with a heat exchanger, first reaction chamber top is equipped with first gas outlet, first gas outlet passes through the pipeline and is connected with first air pump, first air pump passes through the second intake pipe intercommunication of pipeline and second reaction chamber bottom, be equipped with the check valve in the second intake pipe, the second reaction chamber lower part is equipped with the even cloth board of inlet conduit and second air current, the even cloth board of second air current is located second intake pipe upper portion, the even cloth board upper portion of second air current is equipped with the antiseized wall device of second temperature-sensing ware, biological filler device of second and second, the biological filler device of second and the second motor fixed connection at second reaction chamber top, the antiseized wall device upper portion of second is fixed with the water pump, second reaction chamber top is equipped with dewatering device and second gas outlet.

As a further improvement of the above scheme:

preferably, the first biological filler device and the second biological filler device have the same structure and different sizes, the first biological filler device comprises a rotating main shaft fixedly connected with a first motor output shaft, a supporting shaft in a spiral arrangement is arranged on the rotating main shaft, a plurality of mounting grooves are arranged on the supporting shaft, two coaxial first connecting rods are arranged at two ends of each mounting groove, each connecting rod extends into a first connecting sleeve of the outer ring of the biological filler ball, two coaxial second connecting rods are arranged on the inner side of the outer ring of the biological filler ball, and each second connecting rod extends into a second connecting sleeve of the inner ring of the biological filler ball.

Preferably, the first anti-sticking wall device and the second anti-sticking wall device have the same structure, the same size and different sizes, the first anti-sticking wall device comprises a base matched with the desulfurizing tower main body, the base is fixedly connected with the desulfurizing tower main body, a gas port at the upper part of the base is connected with the top of a first air cylinder through a pipeline, a gas port at the lower part of the base is connected with the bottom of the first air cylinder through a pipeline, a piston is arranged in the first air cylinder and fixedly connected with an output shaft of the first air cylinder through a piston rod, extending edges are arranged on the base, a guide rod is arranged between the extending edges, a ball groove is arranged on the guide rod, a sliding sleeve is sleeved on the guide rod, a limiting groove is arranged on the inner side of the sliding sleeve, balls are arranged between the limiting groove and the ball groove, sealing sheets are arranged on two sides of the sliding sleeve, a first inner, the elastic cover is made of waterproof materials, and the edge of the first inner scraping piece is connected with the base, the extending edge and the elastic cover respectively.

Preferably, dewatering device includes the holding box, holding box top and desulfurizing tower main part fixed connection, holding box bottom is equipped with the mesh, be equipped with the dehydration cotton in the holding box, dehydration cotton middle part is fixed with the hollow tube, second motor output shaft wears to establish the hollow tube, rotate through the bearing on the second motor output shaft and be connected with the dwang, the dwang with dehydration cotton parallel arrangement, it is connected with the compression roller to rotate on the dwang, the compression roller is impressed in the dehydration cotton.

The desulfurization method based on the desulfurization tower device comprises the following steps:

a1 introducing a desulfurization solution into the desulfurization tower through a liquid inlet pipe until the desulfurization solution overflows the biological filler device;

a2 introducing biogas into the first reaction chamber through a first gas inlet pipe;

a3, starting a first motor at the top of a first reaction cavity, driving a first biological filler device to rotate, enabling an inner ring and an outer ring of a biological filler ball on the first biological filler device to rotate, and enabling the first biological filler device to desulfurize methane for the first time;

a4, starting the first anti-sticking wall device, starting the first cylinder, driving the output shaft of the first cylinder to reciprocate, driving the first piston in the first cylinder to reciprocate, and driving the first inner doctor blade to reciprocate by the first cylinder;

a5 starting a water pump in the second reaction cavity, pumping the desulfurization liquid at the upper part of the second reaction cavity to a spraying device by the water pump, spraying the gas lifted to the upper part of the first reaction cavity by the spraying device, and performing secondary desulfurization treatment on the methane;

a6 starts a first air pump, the first air pump pumps sprayed air to the bottom of a second reaction cavity, the air is uniformly distributed by a second air flow uniform distribution plate and then enters a second biological filler device, a second motor is started, the second biological filler device rotates, the outer ring and the inner ring of a biological filler ball on the second biological filler device rotate simultaneously, and the biogas is desulfurized for the third time;

a7 starting the second anti-sticking wall device, starting the second cylinder, and driving the output shaft of the second cylinder to reciprocate to drive the second piston in the second cylinder to reciprocate, and driving the second inner scraper to reciprocate by the second cylinder;

when the A8 second motor rotates, can drive dwang and compression roller and rotate, dewater the cotton, gaseous process dehydration cotton gets into the air storage chamber after dehydration.

Compared with the prior art, the invention has the following beneficial effects:

1. the ratio of the cross-sectional area of the first reaction cavity to the cross-sectional area of the second reaction cavity is 1:2, the initial biogas enters the first reaction cavity and then rises more intensively, the generated bubbles are in more violent and rapid contact with the first biological filler device, proper desulfurization can be controlled, excessive reaction and generation of excessive elemental sulfur are avoided, and the elemental sulfur is prevented from being adhered to the first biological filler device;

2. when the first temperature sensor or the second temperature sensor senses that the temperature is too low or too high, the heat exchanger is started, and the heat exchanger controls the temperature of the desulfurization liquid passing through the heat exchange tube, so that the temperatures of the desulfurization liquid in the first reaction cavity and the second reaction cavity are changed, and the desulfurization reaction is facilitated;

3. after the primary desulfurization of the first reaction cavity, the gas is discharged into the second reaction cavity again, the cross sectional area in the second reaction cavity is larger, the gas is uniformly distributed by the second gas flow uniform distribution plate, the bubbles are more dispersed, and the contact between the bubbles and the second biological filler device is milder and more sufficient, so that the desulfurization reaction is more thorough;

4. when the first biological filler device rotates, the outer ring and the inner ring of the biological filler ball both rotate, the biological filler ball generates turbulent flow, and the turbulent flow can flush the biological filler ball, so that elemental sulfur can be prevented from being adhered to the biological filler ball;

5. when the output shaft of the first air cylinder extends out, the piston moves towards the bottom of the first air cylinder, the gas at the bottom of the first air cylinder enters the elastic cover at the lower part of the first inner scraper through the air passing port at the lower part of the base, the gas at the upper part of the first air cylinder absorbs the gas at the upper part of the first inner scraper through the air passing port at the upper part of the base, the elastic cover at the upper part of the first inner scraper is in a compressed state after exhausting the gas, the elastic cover at the lower part of the first inner scraper is in an expanded state, the first inner scraper moves upwards under the action of the air pressure at the lower part, the elastic cover in the compressed state is flattened by the first inner scraper, the flattened elastic cover expands under the action of the air pressure at the lower part, when the output shaft of the first air cylinder retracts, the piston moves towards the top of the first air cylinder, the gas at the top of the first air cylinder enters the elastic cover at the upper part of the first inner scraper through the air, the elastic cover at the lower part of the first inner scraper is in a compressed state after exhausting gas, the elastic cover at the upper part of the first inner scraper is in an expanded state after being filled with gas, the inner scraper moves downwards under the action of the pressure of the gas at the upper part, the elastic cover in the compressed state is flattened by the first inner scraper, and the flattened elastic cover expands under the action of the upper gas pressure;

6. when the output shaft of the second motor rotates, the rotating rod also rotates along with the rotating rod, the compression roller on the rotating rod is in contact with the dehydrated cotton, the dehydrated cotton is fixedly connected with the accommodating box, and the compression roller can effectively extrude the dehydrated cotton in the rotating process, so that the liquid in the dehydrated cotton can be effectively extruded out, and the dehydrated cotton can keep enough dehydration capacity;

7. the bottom of the second reaction cavity is communicated with the bottom of the first reaction cavity, the ratio of the cross sectional areas of the first reaction cavity and the second reaction cavity is 1:2, when a water pump pumps the desulfurization liquid at the upper part of the second reaction cavity to the spraying device, the flow velocity of the desulfurization liquid in the first reaction cavity can be effectively improved, the generated elemental sulfur can be quickly brought to the bottom of the desulfurization tower after the flow velocity is accelerated, and the elemental sulfur can be effectively prevented from being adhered to the first filling device;

8. the base is provided with extending edges, guide rods are arranged between the extending edges, ball grooves are formed in the guide rods, sliding sleeves are sleeved on the guide rods, limiting grooves are formed in the inner sides of the sliding sleeves, balls are arranged between the limiting grooves and the ball grooves, sliding connections are changed into rolling connections through the limiting grooves, the ball grooves and the balls between the first inner doctor blades and the guide rods, and therefore moving efficiency of the first inner doctor blades can be improved.

Drawings

Fig. 1 is an overall structural view of the present invention.

FIG. 2 is a view showing the structure of a dewatering device.

Fig. 3 is a structure diagram of biological filler balls.

Fig. 4 is a structural view of the mounting recess.

Fig. 5 is a structure view of the first wall release mechanism.

Reference numerals: 1. a first motor; 2. a first air outlet; 3. a second motor; 4. a second air outlet; 5. a dewatering device; 6. a heat exchanger; 7. a water pump; 8. a first air pump; 9. a second intake pipe; 10. a liquid inlet pipeline; 11. a first intake pipe; 12. a first airflow uniform distribution plate; 13. a spraying device; 14. a first reaction chamber; 15. a second reaction chamber; 16. a main body of the desulfurizing tower; 17. a first gas cylinder; 18. a first cylinder; 19. a first anti-sticking wall means; 20. a first biological stuffing device; 21. a second cylinder; 22. a second gas cylinder; 23. desulfurizing liquid; 24. a compression roller; 25. rotating the rod; 26. a first connecting sleeve; 27. an outer ring of the biological packing ball; 28. an inner ball ring of the biological stuffing; 29. a second connecting sleeve; 30. installing a groove; 31. a first connecting rod; 32. a first inner blade; 33. an elastic cover; 34. an air passing port at the upper part of the base; 35. a base; 36. a guide bar; 37. an air passing port at the lower part of the base; 38. rotating the main shaft; 39. a support shaft.

Detailed Description

The invention is further described with reference to the following drawings and detailed description.

As shown in fig. 1-5, a biogas biological desulfurization device includes a desulfurization tower main body 16, a first reaction chamber 14 and a second reaction chamber 15 are arranged inside the desulfurization tower main body 16, the first reaction chamber 14 and the second reaction chamber 15 are separated by a partition plate, a gap is left between the bottom of the partition plate and the desulfurization tower main body 16, the first reaction chamber 14 and the second reaction chamber 15 are in a communication state, when a water pump 7 pumps a desulfurization solution 23 on the upper portion of the second reaction chamber 15 to a spray device 13, the flow rate of the desulfurization solution 23 in the first reaction chamber 14 can be effectively increased, the generated elemental sulfur can be quickly brought to the bottom of the desulfurization tower after the flow rate is increased, the elemental sulfur can be effectively prevented from being adhered to a first packing device, and the ratio of the cross-sectional area of the first reaction chamber 14 to the cross-sectional area of the second reaction chamber 15 is 1:2, the initial marsh gas rises more intensively after entering the first reaction chamber 14, the contact between the generated bubbles and the first biological filler device 20 is more violent and rapid, proper desulfurization can be controlled, excessive reaction and excessive elemental sulfur are avoided, and the elemental sulfur is prevented from being adhered to the first biological filler device 20.

First reaction chamber 14 lower part is equipped with the even cloth board 12 of first intake pipe 11 and first air current, be equipped with the check valve on the first intake pipe 11, the even cloth board 12 upper portion of first air current is equipped with first temperature-sensing ware, first biofilm carrier device 20 and first antiseized wall device 19, first biofilm carrier device 20 and the first motor 1 fixed connection at first reaction chamber 14 top, first reaction chamber 14 upper portion is equipped with spray set 13, spray set 13 is connected with water pump 7 in the second reaction chamber 15 through the heat transfer pipeline, the heat transfer pipeline is connected with heat exchanger 6, senses the temperature and crosses when low or too high when the temperature when first temperature-sensing ware, can start heat exchanger 6, and heat exchanger 6 is controlled the temperature to doctor solution 23 through the heat exchange tube to change doctor solution 23 temperature in the first reaction chamber 14, thereby do benefit to desulfurization reaction.

First reaction chamber 14 top is equipped with first gas outlet 2, first gas outlet 2 passes through the pipeline and is connected with first air pump 8, first air pump 8 passes through the pipeline and communicates with second intake pipe 9 of second reaction chamber 15 bottom, be equipped with the check valve in the second intake pipe 9, after the preliminary desulfurization of first reaction chamber 14, discharge into second reaction chamber 15 again in, second reaction chamber 15 internal cross sectional area is bigger, and gas is after the even cloth of the even cloth board of second air current, and the bubble dispersion is more opened, and the contact between bubble and the biological filler device of second is gentler, more abundant for desulfurization reaction is more thorough.

The even cloth board of second reaction chamber 15 lower part is equipped with inlet channel 10 and the even cloth board of second air current, the even cloth board of second air current is located 9 upper portions of second intake pipe, the even cloth board upper portion of second air current is equipped with the antiseized wall device of second temperature-sensing ware, second biofilm carrier device and second, the biological biofilm carrier device of second and the second motor 3 fixed connection at 15 tops of second reaction chamber, the antiseized wall device upper portion of second is fixed with

water pump

7, 15 tops of second reaction chamber are equipped with dewatering device 5 and second gas outlet 4, and when the temperature was crossed low or too high to the sensing of second temperature-sensing ware, heat exchanger 6 can start heat exchanger 6, and heat exchanger 6 is controlled the temperature to doctor solution 23 through the heat exchange tube to change doctor solution 23 temperature in first reaction chamber 14 and the second reaction chamber 15, thereby do benefit to desulfurization reaction.

The biological filler device comprises: the first biological filler device 20 and the second biological filler device have the same structure and different sizes, the first biological filler device 20 comprises a rotating main shaft 38 fixedly connected with an output shaft of the first motor 1, a supporting shaft 39 arranged in a spiral manner is arranged on the rotating main shaft 38, a plurality of mounting grooves 30 are arranged on the supporting shaft 39, two coaxial first connecting rods 31 are arranged at two ends of each mounting groove 30 and extend into the first connecting sleeve 26 of the outer sphere 27 of the biological filler ball, two coaxial second connecting rods are arranged at the inner side of the outer sphere 27 of the biological filler ball and extend into the second connecting sleeve 29 of the inner sphere 28 of the biological filler ball, when the first biological filler device 20 rotates, the outer sphere 27 and the inner sphere of the biological filler both rotate, the biological filler ball generates turbulence, and the turbulence can flush the biological filler ball itself, thereby being capable of avoiding the elemental sulfur from being adhered to the biological filler balls.

The anti-sticking wall device: first antiseized wall device 19 and the same size variation of antiseized wall device structure of second, first antiseized wall device 19 include with the base 35 of desulfurizing tower main part 16 adaptation, base 35 and desulfurizing tower main part 16 fixed connection, the gas mouth 34 and the first cylinder 17 top on base upper portion pass through the pipe connection, the gas mouth 37 and the first cylinder 17 bottom of base lower part pass through the pipe connection, be equipped with the piston in the first cylinder 17, the piston passes through piston rod and first cylinder 18's output shaft fixed connection, be equipped with the extension limit on the base 35, be equipped with guide arm 36 between the extension limit, be equipped with the ball groove on the guide arm 36, the cover is equipped with the doctor-bar sliding sleeve on the guide arm 36, the sliding sleeve inboard is equipped with the spacing groove, be equipped with the ball between spacing groove and the ball groove, through the spacing groove between first inner wall 32 and the guide arm 36, The ball groove and the ball change sliding connection into rolling connection, thereby improving the moving efficiency of the first inner scraping blade 32, the two sides of the sliding sleeve are provided with sealing sheets, the sliding sleeve is externally fixed with a first inner scraping blade 32, the extending edge is fixed with an elastic cover 33, the elastic cover 33 is made of waterproof material, the edge of the first inner scraping blade 32 is respectively connected with the base 35, the extending edge and the elastic cover 33, when the output shaft of the first cylinder 18 extends out, the piston moves towards the bottom of the first cylinder 17, the gas at the bottom of the first cylinder 17 enters the elastic cover 33 at the lower part of the first inner scraping blade 32 through a gas hole 37 at the lower part of the base, the gas at the upper part of the first cylinder 17 is absorbed through the gas hole 34 at the upper part of the base, the elastic cover 33 at the upper part of the first inner scraping blade 32 is in a compressed state after the gas is discharged, the elastic cover 33 at the lower part of the first inner, and the first inner scraper 32 moves upwards under the action of the lower air pressure, the first inner scraper 32 flattens the elastic cover 33 in a compressed state, the flattened elastic cover 33 expands under the action of the lower air pressure, when the output shaft of the first air cylinder 18 retracts, the piston moves towards the top of the first air cylinder 17, the air at the top of the first air cylinder 17 enters the elastic cover 33 at the upper part of the first inner scraper 32 through the air passing port 34 at the upper part of the base, the air at the lower part of the first air cylinder 17 absorbs the air at the lower part of the first inner scraper 32 through the air passing port 37 at the lower part of the base, the elastic cover 33 at the lower part of the first inner scraper 32 is in a compressed state after exhausting the air, the elastic cover 33 at the upper part of the first inner scraper 32 is in an expanded state after being inflated with the air, and the inner scraper moves downwards under the action of the pressure of the upper air, and the first inner scraper 32 flattens, the flattened elastic cover 33 expands under the action of the upper air pressure, and the steps are repeated, so that the elemental sulfur can be effectively prevented from being adhered to the tower wall.

The dehydration device 5: the dehydration device 5 comprises a holding box, the top of the holding box is fixedly connected with a desulfurization tower main body 16, the bottom of the holding box is provided with a mesh, the holding box is internally provided with dehydrated cotton, the middle part of the dehydrated cotton is fixed with a hollow tube, an output shaft of a second motor 3 penetrates through the hollow tube, an output shaft of the second motor 3 is connected with a rotating rod 25 through a bearing in a rotating way, the rotating rod 25 is arranged in parallel with the dehydrated cotton, the rotating rod 25 is connected with a compression roller 24 in a rotating way, the compression roller 24 is pressed into the dehydrated cotton, when the output shaft of the second motor 3 rotates, the rotating rod 25 also rotates along with the hollow tube, the compression roller 24 on the rotating rod 25 is in contact with the dehydrated cotton, the dehydrated cotton is fixedly connected with the holding box, the compression roller 24 can effectively extrude the dehydrated cotton in the rotating process, so that liquid in the dehydrated, so that the dehydrated cotton maintains sufficient dehydrating power.

a1, introducing a desulfurization solution 23 into the desulfurization tower through a liquid inlet pipe until the desulfurization solution 23 overflows the biological filler device;

a2 introducing biogas into the first reaction chamber 14 through the first gas inlet pipe 11;

a3, starting a first motor 1 at the top of a first reaction chamber 14, wherein the first motor 1 drives a first biological filler device 20 to rotate, the inner ring and the outer ring of a biological filler ball on the first biological filler device 20 rotate, and the first biological filler device 20 carries out first desulfurization treatment on methane;

a4, the first anti-sticking wall device 19 is started, the first cylinder 18 is started, the output shaft of the first cylinder 18 reciprocates to drive the first piston in the first cylinder 17 to reciprocate, and the first cylinder 17 drives the first inner scraper 32 to reciprocate;

a5 starts a water pump 7 in a second reaction chamber 15, the water pump 7 pumps the desulfurization solution 23 on the upper part of the second reaction chamber 15 to a spray device 13, the spray device 13 sprays the gas lifted to the upper part of a first reaction chamber 14, and the biogas is subjected to secondary desulfurization treatment, the bottom of the second reaction chamber 15 is communicated with the bottom of the first reaction chamber 14, the ratio of the cross-sectional areas of the first reaction chamber 14 and the second reaction chamber 15 is 1:2, when the water pump 7 pumps the desulfurization solution 23 on the upper part of the second reaction chamber 15 to the spray device 13, the flow velocity of the desulfurization solution 23 in the first reaction chamber 14 can be effectively increased, the generated elemental sulfur can be quickly brought to the bottom of the desulfurization chamber after the flow velocity is increased, and the elemental sulfur can be effectively prevented from being adhered to a first filler device;

a6 starts a first air pump 8, the first air pump 8 pumps the sprayed gas to the bottom of a second reaction chamber 15, the gas enters a second biological filler device after being uniformly distributed by a second gas flow uniform distribution plate, a second motor 3 is started, the second biological filler device rotates, the outer ring and the inner ring of a biological filler ball on the second biological filler device rotate simultaneously, and the biogas is desulfurized for the third time;

a7 starting the second anti-sticking wall device, starting the second cylinder 21, reciprocating the output shaft of the second cylinder 21 to drive the second piston in the second cylinder 22 to reciprocate, and driving the second inner scraper to reciprocate by the second cylinder 22;

when the A8 second motor 3 rotates, the rotating rod 25 and the compression roller 24 can be driven to rotate to dehydrate the dehydrated cotton, and gas enters the gas storage chamber after the dehydrated cotton is dehydrated.

The working principle of the invention is as follows: the desulfurization solution 23 is introduced into the desulfurization tower through a liquid inlet pipe until the desulfurization solution 23 overflows the biological filler device, biogas is introduced into the first reaction chamber 14 through the first gas inlet pipe 11, the first motor 1 at the top of the first reaction chamber 14 is started, the first motor 1 drives the first biological filler device 20 to rotate, when the first biological filler device 20 rotates, the outer ring 27 and the inner ring of the biological filler ball both rotate, the biological filler ball generates turbulence, the turbulence can flush the biological filler ball, so that elemental sulfur can be prevented from adhering to the biological filler ball, the first biological filler device 20 carries out first desulfurization treatment on the biogas, meanwhile, the first anti-sticking wall device 19 is started, the first cylinder 18 is started, the output shaft of the first cylinder 18 reciprocates to drive the first piston in the first cylinder 17 to reciprocate, and the first cylinder 17 drives the first inner scraper 32 to reciprocate, when the output shaft of the first cylinder 18 extends, the piston moves towards the bottom of the first cylinder 17, the gas at the bottom of the first cylinder 17 enters the elastic cover 33 at the lower part of the first inner scraper 32 through the air passing port 37 at the lower part of the base, the gas at the upper part of the first cylinder 17 sucks the gas at the upper part of the first inner scraper 32 through the air passing port 34 at the upper part of the base, the elastic cover 33 at the upper part of the first inner scraper 32 is in a compressed state after exhausting the gas, the elastic cover 33 at the lower part of the first inner scraper 32 is in an expanded state, the first inner scraper 32 moves upwards under the action of the air pressure at the lower part, the elastic cover 33 in the compressed state is flattened by the first inner scraper 32, the flattened elastic cover 33 expands under the action of the air pressure at the lower part, when the output shaft of the first cylinder 18 retracts, the piston moves towards the top of the first cylinder 17, the gas at the top of the first cylinder 17 enters the elastic cover 33 at the upper, the lower part of the first air cylinder 17 absorbs gas at the lower part of the first inner scraper 32 through an air passing port 37 at the lower part of the base, an elastic cover 33 at the lower part of the first inner scraper 32 is in a compressed state after exhausting the gas, the elastic cover 33 at the upper part of the first inner scraper 32 is in an expanded state after filling the gas, the inner scraper moves downwards under the action of the pressure of the gas at the upper part, the elastic cover 33 in the compressed state is flattened by the first inner scraper 32, the flattened elastic cover 33 expands under the action of the upper air pressure, the steps are repeated, elemental sulfur can be effectively prevented from adhering to the tower wall, a water pump 7 in the second reaction chamber 15 is started, the water pump 7 pumps the desulfurization liquid 23 at the upper part of the second reaction chamber 15 to a spraying device 13, the spraying device 13 sprays the gas lifted to the upper part of the first reaction chamber 14 to perform secondary desulfurization treatment on the methane, the bottom of the second reaction chamber 15 is communicated with the bottom of the first reaction chamber 14, and the ratio of the cross-sectional area of the first reaction chamber 14 to the cross-sectional area of the second reaction chamber 15 is 1:2, when the water pump 7 pumps the desulfurization solution 23 at the upper part of the second reaction chamber 15 to the spray device 13, the flow rate of the desulfurization solution 23 in the first reaction chamber 14 can be effectively improved, the generated elemental sulfur can be quickly brought to the bottom of the desulfurization tower after the flow rate is accelerated, the elemental sulfur can be effectively prevented from being adhered to the first filling device, the first air pump 8 is started, the sprayed gas is pumped to the bottom of the second reaction chamber 15 by the first air pump 8, the gas enters the second biological filling device after being uniformly distributed by the second air flow uniform distribution plate, the second motor 3 is started, the second biological filling device rotates, the outer ring and the inner ring of the biological filling ball on the second biological filling device rotate simultaneously, the third desulfurization treatment is carried out on the biogas, when the temperature of the first temperature sensor or the second temperature sensor is too low or too high, the heat exchanger 6 is started, the temperature of the doctor solution 23 passing through the heat exchange tube is controlled by the heat exchanger 6, so that the temperature of the doctor solution 23 in the first reaction chamber 14 and the second reaction chamber 15 is changed, so that the desulfurization reaction is facilitated, the second anti-sticking wall device is started, the second cylinder 21 is started, the output shaft of the second cylinder 21 reciprocates to drive the second piston in the second cylinder 22 to reciprocate, the second cylinder 22 drives the second inner doctor blade to reciprocate, when the output shaft of the second cylinder 21 extends, the piston moves towards the bottom of the second cylinder 22, the gas at the bottom of the second cylinder 22 enters the elastic cover 33 at the lower part of the second inner doctor blade through the air vent 37 at the lower part of the base, the gas at the upper part of the second cylinder 22 is sucked through the air vent 34 at the upper part of the base, the elastic cover 33 at the upper part of the second inner doctor blade is in a compressed state after the gas is discharged from the elastic cover 33 at the upper part of the second, and the second inner blade moves upwards under the action of the lower air pressure, the second inner blade flattens the elastic cover 33 in a compressed state, the flattened elastic cover 33 expands under the action of the lower air pressure, when the output shaft of the second air cylinder 21 retracts, the piston moves towards the top of the second air cylinder 22, the air at the top of the second air cylinder 22 enters the elastic cover 33 at the upper part of the second inner blade through the air vent 34 at the upper part of the base, the air at the lower part of the second air cylinder 22 absorbs the air at the lower part of the second inner blade through the air vent 37 at the lower part of the base, the elastic cover 33 at the lower part of the second inner blade is in a compressed state after exhausting the air, the elastic cover 33 at the upper part of the second inner blade is in an expanded state after being filled with the air, the second inner blade moves downwards under the pressure of the upper air, the second inner blade flattens the elastic cover 33 in the compressed state, and the flattened elastic cover 33 expands under the action of the upper air, repeat above-mentioned step, can effectively avoid the adhesion of elemental sulfur on the tower wall, when the output shaft of second motor 3 rotates, dwang 25 also rotates thereupon, compression roller 24 and the cotton contact of dehydration on the dwang 25, dehydration cotton and holding box fixed connection, compression roller 24 can effectively extrude the dehydration cotton at the rotation in-process to can effectively extrude the liquid in the dehydration cotton, make the dehydration cotton keep sufficient dewatering ability, gaseous process dehydration cotton after get into the air storage chamber.

The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the claims of the present invention should not be limited by the above-mentioned embodiments, because the modifications, equivalent variations, improvements, etc. made in the claims of the present invention still fall within the scope of the present invention.

Claims

1. A biogas biological desulphurization device is characterized in that: the device comprises a desulfurizing tower main body, wherein a first reaction chamber and a second reaction chamber are arranged in the desulfurizing tower main body, the first reaction chamber and the second reaction chamber are separated by a partition plate, a gap is reserved between the bottom of the partition plate and the desulfurizing tower main body, a first air inlet pipe and a first air flow uniform distribution plate are arranged at the lower part of the first reaction chamber, a one-way valve is arranged on the first air inlet pipe, a first temperature sensor, a first biological filler device and a first anti-sticking wall device are arranged at the upper part of the first air flow uniform distribution plate, the first biological filler device is fixedly connected with a first motor at the top of the first reaction chamber, a spraying device is arranged at the upper part of the first reaction chamber, the spraying device is connected with a water pump in the second reaction chamber through a heat exchange pipeline, the heat exchange pipeline is connected with a heat exchanger, a first air outlet is arranged at the top of the first reaction chamber, the first air outlet is connected with a first air pump through, first air pump passes through the second intake pipe intercommunication of pipeline and second reaction chamber bottom, be equipped with the check valve in the second intake pipe, the second reaction chamber lower part is equipped with the even distribution board of feed liquor pipeline and second air current, the even distribution board of second air current is located second intake pipe upper portion, the even distribution board upper portion of second air current is equipped with the antiseized wall device of second temperature-sensing ware, level switch, second biofilm carrier device and second, the second motor fixed connection at second biofilm carrier device and second reaction chamber top, the antiseized wall device upper portion of second is fixed with the water pump, second reaction chamber top is equipped with dewatering device and second gas outlet.

2. The biogas biological desulfurization device according to claim 1, characterized in that: the biological filler device comprises a rotating main shaft fixedly connected with a first motor output shaft, a supporting shaft arranged in a spiral mode is arranged on the rotating main shaft, a plurality of mounting grooves are formed in the supporting shaft, two coaxial first connecting rods are arranged at two ends of each mounting groove and extend into a first connecting sleeve of a biological filler ball outer ring, two coaxial second connecting rods are arranged on the inner side of the biological filler ball outer ring, and the second connecting rods extend into a second connecting sleeve of a biological filler ball inner ring.

3. The biogas biological desulfurization device according to claim 1, characterized in that: the first anti-sticking wall device and the second anti-sticking wall device are structurally the same in size and different in size, the first anti-sticking wall device comprises a base matched with the desulfurizing tower body, the base is fixedly connected with the desulfurizing tower body, a gas port at the upper part of the base is connected with the top of a first air cylinder through a pipeline, the gas port at the lower part of the base is connected with the bottom of the first air cylinder through a pipeline, a piston is arranged in the first air cylinder and fixedly connected with an output shaft of a first air cylinder through a piston rod, extending edges are arranged on the base, a guide rod is arranged between the extending edges, a ball groove is arranged on the guide rod, a sliding sleeve is sleeved on the guide rod, a limiting groove is arranged on the inner side of the sliding sleeve, balls are arranged between the limiting groove and the ball groove, sealing sheets are arranged on two sides of the sliding sleeve, a first inner scraping sheet, the elastic cover is made of waterproof materials, and the edge of the first inner scraping piece is connected with the base, the extending edge and the elastic cover respectively.

4. The biogas biological desulfurization device according to claim 1, characterized in that: dewatering device includes the holding box, holding box top and desulfurizing tower main part fixed connection, holding box bottom is equipped with the mesh, be equipped with the dehydration cotton in the holding box, the cotton middle part of dehydration is fixed with the hollow tube, second motor output shaft wears to establish the hollow tube, rotate through the bearing on the second motor output shaft and be connected with the dwang, the dwang with dehydration cotton parallel arrangement, it is connected with the compression roller to rotate on the dwang, the compression roller is impressed in the dehydration cotton.

5. The desulfurization tower desulfurization method of a biogas biological desulfurization apparatus according to claim 4, characterized by comprising the steps of:

a1, introducing desulfurization liquid into the desulfurization tower through a liquid inlet pipe until the desulfurization liquid overflows the biological filler device to trigger a liquid level switch, and closing the liquid inlet pipe by the liquid level switch;