CN210473533U - Distillation system tail gas processing apparatus - Google Patents
Distillation system tail gas processing apparatus Download PDFInfo
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- CN210473533U CN210473533U CN201920785107.XU CN201920785107U CN210473533U CN 210473533 U CN210473533 U CN 210473533U CN 201920785107 U CN201920785107 U CN 201920785107U CN 210473533 U CN210473533 U CN 210473533U
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- tail gas
- distillation system
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Abstract
The utility model discloses a distillation system tail gas processing apparatus belongs to coal gas fermentation technical field. The distillation system tail gas treatment device comprises: a washing tower, a perfusion tube circulating pump and a gas delivery pipe; the bottom of the washing tower is provided with alkali liquor, and the middle part of the washing tower is provided with a filler area; a liquid inlet of the liquid conveying pipe is communicated with the bottom of the washing tower, and a liquid outlet of the liquid conveying pipe is communicated with the top of the washing tower; the circulating pump is arranged on the infusion tube; the gas outlet of the gas pipe is communicated with the washing tower, and the gas inlet of the gas pipe is arranged between the liquid level of the alkali liquor and the filler area. The utility model discloses distillation system tail gas processing apparatus can get rid of the acidic material in the distillation system tail gas, and the safety in production is realized in tail gas emission of purification.
Description
Technical Field
The utility model relates to a coal gas fermentation technical field, in particular to distillation system tail gas processing apparatus.
Background
The method for preparing ethanol by gas fermentation is a novel technology for producing ethanol by using carbon monoxide as a carbon source through bacterial fermentation, the byproduct is carbon dioxide, the solid in the fermented mash component is mainly thallus, the main component of the thallus is protein, and the protein is easy to denature under the condition that the temperature exceeds 50 ℃. In the operation of an actual distillation system, the removal of carbon dioxide is influenced after protein in fermented mash is denatured, so that liquid carried in tail gas is increased, acidic substances such as carbonic acid, lactic acid and the like and residual denatured protein are increased, and the atmosphere is directly discharged and polluted.
The traditional distillation system cools the tail gas through condensing equipment, collects a small amount of entrained liquid and some heavier components in the tail gas after condensation, and discharges the residual non-condensable gas into the atmosphere through a tail gas pipeline. However, acidic substances and residual proteins in the tail gas of the distillation system cannot be removed, and the tail gas is discharged into the atmosphere to cause environmental pollution.
SUMMERY OF THE UTILITY MODEL
The utility model provides a distillation system tail gas processing apparatus has solved or has partially solved among the prior art in the distillation system tail gas acidic material and residual protein can't get rid of, can cause environmental pollution's technical problem in the atmosphere of discharging.
In order to solve the technical problem, the utility model provides a distillation system tail gas processing apparatus includes: a washing tower, a liquid conveying pipe, a circulating pump and a gas conveying pipe; the bottom of the washing tower is provided with alkali liquor, and the middle part of the washing tower is provided with a filler area; a liquid inlet of the liquid conveying pipe is communicated with the bottom of the washing tower, and a liquid outlet of the liquid conveying pipe is communicated with the top of the washing tower; the circulating pump is arranged on the infusion tube; the gas outlet of the gas pipe is communicated with the washing tower, and the gas inlet of the gas pipe is arranged between the liquid level of the alkali liquor and the filler area.
Further, the temperature of the alkali liquor is 20-40 ℃.
Further, the concentration of the alkali liquor is 3-10%.
Further, a liquid level meter is arranged on the washing tower.
Further, the distillation system tail gas treatment device further comprises: an addition pipe; and a liquid outlet of the adding pipe penetrates through the tower wall of the washing tower and is arranged below the liquid level of the alkali liquor.
Further, a switch valve is arranged on the adding pipe.
Further, the distillation system tail gas treatment device further comprises: a blow-off pipe; the sewage draining pipe is communicated with the infusion tube, and a liquid inlet of the sewage draining pipe is arranged between the circulating pump and a liquid outlet of the infusion tube.
Furthermore, a drain valve is arranged on the drain pipe.
Further, the distillation system tail gas treatment device further comprises: an emptying pipe; the emptying pipe is communicated with the top of the washing tower.
Further, an air release valve is arranged on the air release pipe.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the bottom of the washing tower is provided with alkali liquor, the middle part of the washing tower is provided with a filler area, a liquid inlet of a liquid conveying pipe is communicated with the bottom of the washing tower, a liquid outlet of the liquid conveying pipe is communicated with the top of the washing tower, a circulating pump is arranged on the liquid conveying pipe, a gas outlet of a gas conveying pipe is communicated with the washing tower, and a gas inlet of the gas conveying pipe is arranged between the liquid level of the alkali liquor and the filler area. Therefore, the gas pipe inputs the distilled waste gas of the fermentation tail gas into the washing tower, the waste gas enters the washing tower and then runs from bottom to top in the equipment, the circulating pump is started, the alkali liquor is conveyed to the top of the washing tower through the liquid conveying pipe, the alkali liquor runs from top to bottom in the washing tower, the alkali liquor and the washing tower are in countercurrent contact at the filler area, the acid substances remained in the waste gas are washed by the alkali liquor, the washed tail gas is discharged into the atmosphere at the top of the washing tower at high altitude, the acid substances in the tail gas of the distillation system can be removed, the tail gas emission is purified, and the safe production is realized.
Drawings
Fig. 1 is a schematic structural diagram of a distillation system tail gas treatment device provided by an embodiment of the present invention.
Detailed Description
Referring to fig. 1, an embodiment of the present invention provides a distillation system tail gas treatment device including: a washing tower 1, a transfusion tube 2, a circulating pump 3 and a gas transmission tube 4.
The bottom of the washing tower 1 is provided with alkali liquor, and the middle part of the washing tower 1 is provided with a filler area 5.
The liquid inlet of the liquid conveying pipe 2 is communicated with the bottom of the washing tower 1, and the liquid outlet of the liquid conveying pipe 2 is communicated with the top of the washing tower 1.
The circulating pump 3 is arranged on the transfusion tube 2.
The air outlet of the air delivery pipe 4 is communicated with the washing tower 1, and the air inlet of the air delivery pipe 4 is arranged between the liquid level of the alkali liquor and the filler zone 5.
This application embodiment is because the bottom of scrubbing tower 1 is provided with alkali lye, and the middle part of scrubbing tower 1 is provided with filler district 5, the income liquid mouth of transfer line 2 and the bottom intercommunication of scrubbing tower 1, the liquid outlet of transfer line 2 and the top intercommunication of scrubbing tower 1, and circulating pump 3 sets up on transfer line 2, the gas outlet and the scrubbing tower 1 intercommunication of gas-supply pipe 4, and the air inlet setting of gas-supply pipe 4 is between the liquid level of alkali lye and filler district 5. Therefore, the gas pipe 4 inputs the distilled waste gas of the fermentation tail gas into the washing tower 1, the waste gas enters the washing tower 1 and then runs from bottom to top in the equipment, the circulating pump 3 is started, the alkali liquor is conveyed to the top of the washing tower 1 through the liquid conveying pipe 2, the alkali liquor runs from top to bottom in the washing tower, the alkali liquor and the washing tower are in countercurrent contact at the packing area 5, the acid substances remained in the waste gas are washed by the alkali liquor, the washed tail gas is discharged into the atmosphere at the top of the washing tower 1 at high altitude, the acid substances in the tail gas of a distillation system can be removed, the tail gas emission is purified, and the safe production is realized.
Wherein, the washing tower 1 is made of acid and alkali resistant material and is internally provided with a packing layer. The circulating pump 3 adopts an acid-base resistant pump.
Specifically, the temperature of the alkali liquor is 20-40 ℃, the concentration of the alkali liquor is 3-10%, so that the alkali liquor is weak in alkalinity and can react with acidic substances in the tail gas.
Specifically, a liquid level meter 6 is fixedly arranged on the washing tower 1 and used for monitoring the liquid level in the washing tower 1.
Specifically, the distillation system tail gas treatment device further comprises: a pipe 7 is added.
The liquid outlet of the adding pipe 7 penetrates through the tower wall of the washing tower 1 and is used for adding alkali liquor into the washing tower 1.
The liquid outlet of the adding pipe 7 is arranged below the liquid level of the alkali liquor, so that the waste gas is prevented from overflowing from the adding pipe 7 when the alkali liquor is added.
When the liquid level meter 6 monitors that the alkali liquor in the washing tower 1 is lower than a set value, the alkali liquor is added into the washing tower 1 through the adding pipe 7.
The adding pipe 7 is fixedly provided with a switch valve 8 for controlling the opening and closing of the adding pipe 7.
Specifically, the distillation system tail gas treatment device further comprises: a blow-off pipe 9.
The drain pipe 9 is communicated with the infusion tube 2, and a liquid inlet of the drain pipe 9 is arranged between the circulating pump 3 and a liquid outlet of the infusion tube 2.
Detect the PH value of washing tower bottom alkali lye through blow off pipe 9, when the PH value of alkali lye is less than 9, discharge alkali lye through blow off pipe 9.
A drain valve 10 is fixedly arranged on the drain pipe 9 and is used for controlling the opening and closing of the drain pipe 9.
Specifically, the distillation system tail gas treatment device further comprises: and a blow pipe 11.
The blow-down pipe 11 communicates with the top of the washing column 1 for blowing down the washing column 1.
And an emptying valve 12 is fixedly arranged on the emptying pipe 11 and is used for controlling the opening and closing of the emptying pipe 12.
In order to more clearly describe the embodiment of the present invention, the following description is provided on the using method of the embodiment of the present invention.
And opening a switch valve 8 fixedly arranged on the adding pipe 7, inputting alkali liquor into the washing tower 1 through the adding pipe 7, and enabling a liquid outlet of the adding pipe 7 to be below the liquid level of the alkali liquor. The gas pipe 4 inputs the waste gas of the fermentation tail gas after distillation into the washing tower 1, and the waste gas enters the washing tower 1 and then runs from bottom to top in the equipment.
Starting the circulating pump 3, conveying the alkali liquor to the top of the washing tower 1 through the liquid conveying pipe 2, running the alkali liquor from top to bottom in the washing tower, carrying out countercurrent contact on the alkali liquor and the washing tower at the packing area 5, washing the acid substances remained in the waste gas by the alkali liquor, discharging the washed tail gas into the atmosphere at the top of the washing tower 1 at high altitude, removing the acid substances in the tail gas of the distillation system, purifying the tail gas, and realizing safe production.
Detect the PH value of washing tower bottom alkali lye through blow off pipe 9, when the PH value of alkali lye is less than 9, open blowoff valve 10, discharge alkali lye through blow off pipe 9. The liquid level of the alkali liquor in the washing tower 1 is monitored by the liquid level meter 6, when the liquid level meter 6 monitors that the alkali liquor in the washing tower 1 is lower than a set value, the alkali liquor is added into the washing tower 1 through the adding pipe 7, the alkali liquor in the washing tower 1 can be replaced periodically, the liquid level of the alkali liquor meets the requirement, and meanwhile, the PH value of the alkali liquor is kept above 9.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. A distillation system tail gas treatment device, comprising: a washing tower, a liquid conveying pipe, a circulating pump and a gas conveying pipe;
the bottom of the washing tower is provided with alkali liquor, and the middle part of the washing tower is provided with a filler area;
a liquid inlet of the liquid conveying pipe is communicated with the bottom of the washing tower, and a liquid outlet of the liquid conveying pipe is communicated with the top of the washing tower;
the circulating pump is arranged on the infusion tube;
the gas outlet of the gas pipe is communicated with the washing tower, and the gas inlet of the gas pipe is arranged between the liquid level of the alkali liquor and the filler area.
2. The distillation system tail gas treatment device according to claim 1, wherein:
the temperature of the alkali liquor is 20-40 ℃.
3. The distillation system tail gas treatment device according to claim 1, wherein:
the concentration of the alkali liquor is 3-10%.
4. The distillation system tail gas treatment device according to claim 1, wherein:
and a liquid level meter is arranged on the washing tower.
5. The distillation system tail gas treatment apparatus according to claim 1, further comprising: an addition pipe;
and a liquid outlet of the adding pipe penetrates through the tower wall of the washing tower and is arranged below the liquid level of the alkali liquor.
6. The distillation system tail gas treatment device according to claim 5, wherein:
and the adding pipe is provided with a switch valve.
7. The distillation system tail gas treatment apparatus according to claim 1, further comprising: a blow-off pipe;
the sewage draining pipe is communicated with the infusion tube, and a liquid inlet of the sewage draining pipe is arranged between the circulating pump and a liquid outlet of the infusion tube.
8. The distillation system tail gas treatment device according to claim 7, wherein:
and a drain valve is arranged on the drain pipe.
9. The distillation system tail gas treatment apparatus according to claim 1, further comprising: an emptying pipe;
the emptying pipe is communicated with the top of the washing tower.
10. The distillation system tail gas treatment device according to claim 9, wherein:
and the emptying pipe is provided with an emptying valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785107.XU CN210473533U (en) | 2019-05-28 | 2019-05-28 | Distillation system tail gas processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785107.XU CN210473533U (en) | 2019-05-28 | 2019-05-28 | Distillation system tail gas processing apparatus |
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| Publication Number | Publication Date |
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| CN210473533U true CN210473533U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920785107.XU Active CN210473533U (en) | 2019-05-28 | 2019-05-28 | Distillation system tail gas processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827332A (en) * | 2021-01-08 | 2021-05-25 | 宁夏首朗吉元新能源科技有限公司 | Non-condensable gas treatment device and method for distillation system |
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2019
- 2019-05-28 CN CN201920785107.XU patent/CN210473533U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827332A (en) * | 2021-01-08 | 2021-05-25 | 宁夏首朗吉元新能源科技有限公司 | Non-condensable gas treatment device and method for distillation system |
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