CN215250797U - In-situ desulfurization device for CSTR fermentation tank - Google Patents
In-situ desulfurization device for CSTR fermentation tank Download PDFInfo
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- CN215250797U CN215250797U CN202121716549.2U CN202121716549U CN215250797U CN 215250797 U CN215250797 U CN 215250797U CN 202121716549 U CN202121716549 U CN 202121716549U CN 215250797 U CN215250797 U CN 215250797U
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Abstract
The utility model provides an in-situ desulphurization device for a CSTR fermentation tank, which comprises an air compressor, an air storage tank and an anaerobic fermentation tank; a central sleeve is arranged in the anaerobic fermentation tank, an air inlet is formed in the top of the anaerobic fermentation tank, a gas stirring device extending into the central sleeve is arranged in the air inlet, an air compressor is communicated with a gas storage tank through a pipeline, and the gas storage tank is communicated with the gas stirring device through a pipeline; the middle lower part of the gas stirring device is provided with a gas release hole, one side of the lower part of the anaerobic fermentation tank is provided with a feed inlet, and the other side of the lower part of the anaerobic fermentation tank is provided with a discharge outlet; the top of the anaerobic fermentation tank is provided with a gas outlet which is communicated with a biogas circulating system, and the biogas circulating system is communicated with the top of the gas stirring device through a pipeline. Utilize the utility model discloses carry out the normal position desulfurization, can carry out effective control to the jar interior hydrogen sulfide concentration, avoid the hydrogen sulfide to the toxic effect of methane, improve and produce gas efficiency, alleviate jar body and pipeline corrosion, prolong its life to area has been practiced thrift, and the investment is saved.
Description
Technical Field
The utility model belongs to the technical field of the normal position desulfurization, concretely relates to normal position desulphurization unit for CSTR fermentation cylinder.
Background
The treatment of organic wastes (including livestock and poultry manure, kitchen waste, fruit and vegetable wastes and the like) is an important part in biogas engineering, and currently, in an actual engineering case, fermented biogas is usually independently fed into an independent biological desulfurization system for desulfurization, so that the actual engineering application of the in-situ desulfurization technology is less.
The in-situ desulfurization technology adopted in the market at present mainly has two kinds, one is that the gas space of releasing the air to anaerobic fermentation tank releases, this kind brings the gas extremely inhomogeneous and desulfurization stability poor in the space distribution, and there is great risk in the actual engineering case, another kind is setting up the special region of marsh gas desulfurization at anaerobic fermentation tank, take out the marsh gas of upper portion space and pass through air pump compression back, after marsh gas pump export and air mix, release in the filler district that sets up, utilize the microorganism to carry out the desulfurization on the filler, but in the practical application process, especially in the complete mixing anaerobic jar because of the sludge concentration height, the easy scale deposit of filler takes place the jam, later stage effect becomes poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists, provide an in situ desulphurization unit for CSTR fermentation cylinder to solve the unstable or easy problem of blockking up of current in situ desulfurization, bring the reduction of cost for the operation of desulfurization, improve the stability of desulfurization operation.
The utility model provides an above-mentioned technical problem's technical scheme as follows: an in-situ desulfurization device for a CSTR fermentation tank comprises an air compressor, a gas storage tank and an anaerobic fermentation tank; a central sleeve is arranged in the anaerobic fermentation tank, an air inlet is formed in the top of the anaerobic fermentation tank, a gas stirring device extending into the central sleeve is arranged in the air inlet, the air compressor is communicated with the gas storage tank through a pipeline, and the gas storage tank is communicated with the gas stirring device through a pipeline; the middle lower part of the gas stirring device is provided with a gas release hole, one side of the lower part of the anaerobic fermentation tank is provided with a feed inlet, and the other side of the lower part of the anaerobic fermentation tank is provided with a discharge outlet; the top of the anaerobic fermentation tank is provided with a gas outlet which is communicated with a biogas circulating system, and the biogas circulating system is communicated with the top of the gas stirring device through a pipeline.
The utility model is further arranged that the central sleeve is fixed on the wall of the anaerobic fermentation tank through a pull rope; a feeding gate valve is arranged on the feeding hole, and a discharging gate valve is arranged on the discharging hole; and a positive and negative pressure protector is arranged at the top of the anaerobic fermentation tank.
The utility model discloses further set up to, the air compressor machine with filter equipment, manometer and relief valve are equipped with in proper order on the pipeline between the gas holder.
The utility model discloses further set up to, filter equipment is including C level filter, T level filter and the A level filter of establishing ties in proper order.
The utility model discloses further set up to, the gas holder with ball valve, pressure regulating valve, electronic ball valve, check valve and manual ball valve are equipped with in proper order on the pipeline between the gas stirring device.
The utility model discloses further set up as, marsh gas circulating system with pipeline between the gas agitating unit the gas holder with pipeline intercommunication between the gas agitating unit is equipped with manual butterfly valve.
The utility model discloses further set up to, biogas circulation system is equipped with coarse filter, catch water, marsh gas compressor, check valve and catch water in proper order through the pipeline according to the direction of leaking gas.
The utility model discloses further set up as, be equipped with thermometer, pressure transmitter and temperature transmitter on marsh gas circulation system's the pipeline.
The utility model discloses further set up to, the bottom of gas holder is equipped with the export, manual ball valve and trap are equipped with in the export.
The utility model is further provided with a branch pipeline communicated with the gas outlet, and a biogas flowmeter and a butterfly valve are arranged on the branch pipeline; the top of the anaerobic fermentation tank is provided with a foam detector; a pipeline between the gas stirring device and the methane circulating system is provided with a methane analyzer; and an adjusting electric valve with a flowmeter is arranged on a pipeline between the gas storage tank and the gas stirring device.
The utility model discloses following beneficial effect has: utilize the utility model discloses carry out the normal position desulfurization, can carry out effective control to the jar interior hydrogen sulfide concentration, avoided the hydrogen sulfide to the toxic effect of methane, improved gas production efficiency, alleviateed jar body and pipeline corrosion, the extension jar body and pipeline life to area has been practiced thrift, and the investment is saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1, an air compressor; 2. a pressure gauge; 3. a safety valve; 4. a gas storage tank; 5. a ball valve; 6. a pressure regulating valve; 7. an electric ball valve; 8. an adjusting electric valve with a flowmeter; 9. a check valve; 10. a manual ball valve; 11. a positive and negative voltage protector; 12. a manual butterfly valve; 13. a gas stirring device; 14. a foam detector; 15. anaerobic fermentation tank; 16. a biogas analyzer; 17. a biogas circulating system; 17-1, a coarse filter; 17-2, a steam-water separator; 17-3, a biogas compressor; 17-4, a one-way valve; 17-5, a thermometer; 17-6, a pressure transmitter; 17-7, a temperature transmitter; 18. a biogas flow meter; 19. a butterfly valve; 20. a feed gate valve; 21. a discharge gate valve; 22. a manual ball valve; 23. a drain valve; 25. a class C filter; 26. a T-stage filter; 27. a class A filter; 28. pulling a rope; 30. a gas release hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides an in situ desulphurization unit for CSTR fermentation cylinder, refer to fig. 1, including air compressor machine 1, gas holder 4 and anaerobic fermentation tank 15. The anaerobic fermentation tank 15 is provided with a center sleeve which can be fixed to the wall of the anaerobic fermentation tank 15 by a pull rope 28. The top of the anaerobic fermentation tank 15 is provided with an air inlet, a gas stirring device 13 extending into the central sleeve is arranged in the air inlet, the air compressor 1 is communicated with the gas storage tank 4 through a pipeline, and the gas storage tank 4 is communicated with the gas stirring device 13 through a pipeline. The middle lower part of the gas stirring device 13 is provided with a gas release hole 30, one side of the lower part of the anaerobic fermentation tank 15 is provided with a feed inlet, the other side of the lower part of the anaerobic fermentation tank 15 is provided with a discharge outlet, the feed inlet is provided with a feed gate valve 20, the discharge outlet is provided with a discharge gate valve 21, and the top of the anaerobic fermentation tank 15 is provided with a positive and negative pressure protector 11. The top of the anaerobic fermentation tank 15 is provided with an air outlet which is communicated with a biogas circulating system 17, and the biogas circulating system 17 is communicated with the top of the gas stirring device 13 through a pipeline. After the air and the biogas of the biogas circulating system 17 are fully mixed on the pipeline, the air is released through the gas release hole 30 under a certain liquid level of the anaerobic fermentation tank 15 through the gas stirring device 13, the released gas is mixed with the liquid and the microorganisms in the central sleeve, the desulfurization microorganisms in the anaerobic tank reduce the hydrogen sulfide into elemental sulfur by using oxygen, inhibit the reproduction of sulfur bacteria, reduce the generation of the hydrogen sulfide, thereby reducing the toxic action on methane bacteria and providing the gas production efficiency.
Further, a filtering device, a pressure gauge 2 and a safety valve 3 are sequentially arranged on a pipeline between the air compressor 1 and the air storage tank 4. The filtration device comprises a C-stage filter 25, a T-stage filter 26 and an A-stage filter 27 in series. After being filtered by the C-grade filter 25, the T-grade filter 26 and the A-grade filter 27, the oil content and the dust-containing particle size in the air are ensured to be lower than set values.
Further, a ball valve 5, a pressure regulating valve 6, an electric ball valve 7, a check valve 9 and a manual ball valve 10 are sequentially arranged on a pipeline between the gas storage tank 4 and the gas stirring device 13. The pressure of the gas on the pipeline is controlled by the pressure regulating valve 6, so that the pressure of the gas on the pipeline is basically consistent with the pressure of the gas at the outlet of the biogas circulating system 17. Wherein, ball valve 5 and pressure regulating valve 6 jointly adjust the pressure of gaseous wet process (ball valve 5 flow control, pressure regulating valve 6 goes up the pressure gauge, can the steady pressure), and electronic ball valve 7 is used for judging whether give the air in PLC, and check valve 9 ensures that the one-way entering of air and marsh gas hybrid tube way, and marsh gas can not reverse entering compressed air pipeline, prevents marsh gas entering air pipeline when manual ball valve 10 only is used for the anterior segment to overhaul, plays the effect of dual protection.
Furthermore, a pipeline between the biogas circulating system 17 and the gas stirring device 13 and a pipeline between the gas storage tank 4 and the gas stirring device 13 are communicated and are provided with a manual butterfly valve 12.
Furthermore, the biogas circulating system 17 is sequentially provided with a coarse filter 17-1, a vapor-water separator 17-2, a biogas compressor 17-3, a one-way valve 17-4 and a vapor-water separator 17-2 through pipelines according to the gas passing direction. The pipeline of the biogas circulating system 17 is also provided with a thermometer 17-5, a pressure transmitter 17-6 and a temperature transmitter 17-7. After passing through a coarse filter 17-1, biogas in the anaerobic fermentation tank 15 is subjected to steam-water separation by a preposed steam-water separator 17-2, the separated biogas enters a biogas compressor 17-3, is subjected to steam-water separation by a postpositional steam-water separator 17-2, is pressurized to a set pressure by the biogas compressor 17-3, and then enters a pipeline connected with a gas releaser.
Further, the bottom of the gas storage tank 4 is provided with an outlet, and a manual ball valve 22 and a drain valve 23 are arranged on the outlet and used for discharging condensate.
Furthermore, the air outlet is communicated with a branch pipeline, and a biogas flowmeter 18 and a butterfly valve 19 are arranged on the branch pipeline. The top of the anaerobic fermenter 15 is equipped with a foam detector 14. A methane analyzer 16 is arranged on the pipeline between the gas stirring device 13 and the methane circulating system 17. An adjusting electric valve 8 with a flow meter is arranged on a pipeline between the gas storage tank 4 and the gas stirring device 13 so as to control the amount of air to be added. The content of hydrogen sulfide, methane, oxygen and carbon dioxide can be detected on line in real time by the methane analyzer 16, the content of hydrogen sulfide, the content of oxygen and the methane amount fed back by the methane flowmeter 18 are fed back by the methane analyzer 16, the opening degree of the adjusting electric valve 8 with the flowmeter is controlled by a PLC control program so as to control the supply amount of air, the content of the residual oxygen after the oxygen and the methane are mixed and are acted by desulfurization microorganisms is ensured to be within a first set value such as 1 percent and not more than a second set value such as 2 percent at most, when the methane analyzer 16 detects that the content of oxygen is higher than the first set value, the residual oxygen is fed back to the PLC, the PLC program action is fed back to the adjusting electric valve 8 with the flowmeter, the air supply is stopped, the system safety is ensured, and the system is started again when the content of oxygen is lower than the second set value again.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. An in-situ desulfurization device for a CSTR fermentation tank is characterized by comprising an air compressor, a gas storage tank and an anaerobic fermentation tank; a central sleeve is arranged in the anaerobic fermentation tank, an air inlet is formed in the top of the anaerobic fermentation tank, a gas stirring device extending into the central sleeve is arranged in the air inlet, the air compressor is communicated with the gas storage tank through a pipeline, and the gas storage tank is communicated with the gas stirring device through a pipeline; the middle lower part of the gas stirring device is provided with a gas release hole, one side of the lower part of the anaerobic fermentation tank is provided with a feed inlet, and the other side of the lower part of the anaerobic fermentation tank is provided with a discharge outlet; the top of the anaerobic fermentation tank is provided with a gas outlet which is communicated with a biogas circulating system, and the biogas circulating system is communicated with the top of the gas stirring device through a pipeline.
2. The in situ desulfurization apparatus according to claim 1, wherein said central sleeve is fixed to the wall of said anaerobic fermentor by a pulling rope; a feeding gate valve is arranged on the feeding hole, and a discharging gate valve is arranged on the discharging hole; and a positive and negative pressure protector is arranged at the top of the anaerobic fermentation tank.
3. The in-situ desulfurization apparatus according to claim 1, wherein a filtering device, a pressure gauge and a safety valve are installed in sequence on the pipeline between the air compressor and the air storage tank.
4. The in-situ desulfurization device of claim 3, wherein the filtering device comprises a C-stage filter, a T-stage filter and an A-stage filter which are connected in series in sequence.
5. The in-situ desulfurization device according to claim 1, wherein a ball valve, a pressure regulating valve, an electric ball valve, a check valve and a manual ball valve are sequentially installed on a pipeline between the gas storage tank and the gas stirring device.
6. The in-situ desulfurization device according to claim 1, wherein a pipeline between the biogas circulation system and the gas stirring device and a pipeline between the gas storage tank and the gas stirring device are communicated and provided with a manual butterfly valve.
7. The in-situ desulfurization device of claim 1, wherein the biogas circulation system is sequentially provided with a coarse filter, a steam-water separator, a biogas compressor, a one-way valve and a steam-water separator through pipelines according to the gas passing direction.
8. The in-situ desulfurization device according to claim 7, wherein a temperature gauge, a pressure transmitter and a temperature transmitter are installed on the pipeline of the biogas circulating system.
9. The in-situ desulfurization device according to claim 1, wherein the bottom of the gas storage tank is provided with an outlet, and the outlet is provided with a manual ball valve and a drain valve.
10. The in-situ desulfurization device according to claim 1, wherein a branch pipeline is communicated with the gas outlet, and a biogas flow meter and a butterfly valve are arranged on the branch pipeline; the top of the anaerobic fermentation tank is provided with a foam detector; a pipeline between the gas stirring device and the methane circulating system is provided with a methane analyzer; and an adjusting electric valve with a flowmeter is arranged on a pipeline between the gas storage tank and the gas stirring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121716549.2U CN215250797U (en) | 2021-07-27 | 2021-07-27 | In-situ desulfurization device for CSTR fermentation tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121716549.2U CN215250797U (en) | 2021-07-27 | 2021-07-27 | In-situ desulfurization device for CSTR fermentation tank |
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| CN215250797U true CN215250797U (en) | 2021-12-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751609A (en) * | 2022-03-10 | 2022-07-15 | 上海市政工程设计研究总院（集团）有限公司 | Sludge treatment method and gas-liquid two-phase internal desulfurization anaerobic digestion tank |
| CN115505501A (en) * | 2022-11-01 | 2022-12-23 | 上海环境工程设计研究院有限公司 | Full-mixing anaerobic digestion system and control method thereof |
-
2021
- 2021-07-27 CN CN202121716549.2U patent/CN215250797U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751609A (en) * | 2022-03-10 | 2022-07-15 | 上海市政工程设计研究总院（集团）有限公司 | Sludge treatment method and gas-liquid two-phase internal desulfurization anaerobic digestion tank |
| CN115505501A (en) * | 2022-11-01 | 2022-12-23 | 上海环境工程设计研究院有限公司 | Full-mixing anaerobic digestion system and control method thereof |
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