CN213950876U - Recovery production line of alcohol-containing wastewater of synthetic ammonia alcohol-combining process - Google Patents
Recovery production line of alcohol-containing wastewater of synthetic ammonia alcohol-combining process Download PDFInfo
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- CN213950876U CN213950876U CN202021249295.3U CN202021249295U CN213950876U CN 213950876 U CN213950876 U CN 213950876U CN 202021249295 U CN202021249295 U CN 202021249295U CN 213950876 U CN213950876 U CN 213950876U
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Abstract
The utility model belongs to the technical field of chemical industry recovery, a synthetic ammonia allies oneself with recovery production line of mellow wine technology alcohol-containing waste water is related to. This recovery production line, including the alcholization alcohol washing tower, low pressure methyl alcohol washing tower, water treatment recovery tank, first alcohol washing pump, tower reflux tank is in advance gone back to the rectification, teletransmission level gauge and liquid level control valve, the alcohol-containing waste water outlet and the water treatment recovery tank of alcholization alcohol washing tower are connected, the alcohol-containing waste water outlet and the water treatment recovery tank of low pressure methyl alcohol washing tower are connected, water treatment recovery tank and first alcohol washing pump are connected, first alcohol washing pump is in advance connected with tower reflux tank in the rectification, on the alcholization alcohol washing tower, all be provided with teletransmission level gauge on low pressure methyl alcohol washing tower and the water treatment recovery tank, and be connected with the liquid level control valve on the corresponding pipeline. The recovery production line effectively recovers and utilizes alcohol-containing wastewater in the synthetic ammonia-alcohol technology, is energy-saving and environment-friendly, reduces sewage discharge amount and sewage treatment cost, and brings good economic benefit for enterprises.
Description
Technical Field
The utility model belongs to the technical field of chemical industry recovery, a synthetic ammonia allies oneself with recovery production line of mellow wine technology alcohol-containing waste water is related to.
Background
A common ammonia synthesis system is the bi-alcoholic process; in the production process of ammonia synthesis and methanol co-production, a large amount of waste water is generated by the alcohol purifying towers of the methanol synthesis section and the high-pressure alcohol alkylation section, and the waste water contains about 10 percent of methanol. If the wastewater is directly discharged into a gas-making circulating water system, the COD content (7000-10000 ppm) of the gas-making circulating water is too high; meanwhile, due to poor circulating water quality, the gas-making circulating water system can quantitatively discharge the gas-making circulating water system to a sewage treatment plant for secondary treatment, so that high sewage treatment cost is brought to enterprises, and the treatment difficulty is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a synthetic ammonia allies oneself with mellow wine technology contains recovery production line of alcoholic waste water, makes the alcoholic waste water not arrange outward, reduces the sewage treatment expense, reduces the wasting of resources.
The utility model provides a technical problem as follows.
A recovery production line of alcohol-containing wastewater of a synthetic ammonia alcohol-combining process comprises an alcohol alkylation alcohol washing tower, a low-pressure methanol alcohol washing tower, a water treatment recovery tank, a first alcohol washing pump, a rectification pre-tower reflux tank, a remote liquid level meter and a liquid level regulating valve; an alcohol-containing wastewater outlet of the alcohol alkylation alcohol washing tower is connected with a liquid inlet of the water treatment recovery tank through a first pipeline, an alcohol-containing wastewater outlet of the low-pressure methanol alcohol washing tower is connected with a liquid inlet of the water treatment recovery tank through a second pipeline, a liquid outlet of the water treatment recovery tank is connected with a liquid inlet of a first alcohol washing pump through a third pipeline, and a liquid outlet of the first alcohol washing pump is connected with a liquid inlet of a reflux tank of the rectification pre-tower through a fourth pipeline; the remote transmission liquid level meter arranged on the alcohol alkylation alcohol washing tower is connected with the liquid level regulating valve arranged on the first pipeline, the remote transmission liquid level meter arranged on the low-pressure methanol alcohol washing tower is connected with the liquid level regulating valve arranged on the second pipeline, and the remote transmission liquid level meter arranged on the water treatment recovery tank is connected with the liquid level regulating valve arranged on the fourth pipeline. According to the technical scheme, alcohol-containing wastewater discharged from alcohol purifying towers of a methanol synthesis section and a high-pressure alcohol alkylation section in the production process of coproducing methanol from synthetic ammonia is effectively recovered and utilized, namely, the alcohol-containing wastewater is treated by a water treatment recovery tank and then is sent to a reflux tank of a rectifying pre-tower to serve as rectifying extraction water, so that the alcohol-containing wastewater is not discharged; meanwhile, reasonable control of the material liquid level in each device is achieved through the remote transmission liquid level meter and the liquid level regulating valve, and the whole system is smooth and efficient in operation.
Further, the recycling production line also comprises a second alcohol washing pump; the liquid inlet of the second alcohol washing pump is connected with the third pipeline through a fifth pipeline, and the liquid outlet of the second alcohol washing pump is connected with the fourth pipeline through a sixth pipeline. Through setting up the second and wash the alcohol pump, on the one hand, effectively increase the efficiency that contains alcohol waste water and get into rectification pre-tower reflux drum, on the other hand, reduce the harmful effects that single wash the alcohol pump trouble led to the fact whole production line.
Further, the recovery production line also comprises a soft water storage tank; the soft water storage tank is connected with a liquid inlet of the pre-rectification tower reflux tank through a seventh pipeline, and a remote liquid level meter arranged on the pre-rectification tower reflux tank is connected with a liquid level regulating valve arranged on a sixth pipeline. Through setting up the soft water storage tank, combine teletransmission level gauge and liquid level control valve, can realize, when the alcohol-containing waste water is not enough in the wash mellow wine tower, in time supplementary to required extraction water in the rectifying pre-tower reflux tank according to actual need.
Further, the recovery production line also comprises a gas-making circulating water pool; the liquid outlet of the water treatment recovery tank is connected with the liquid inlet of the gas making circulating water tank through an eighth pipeline. Through setting up the gas making circulating water pond, can realize, when rectifying the shutdown of tower in advance, in time discharge to the gas making circulating water pond with alcohol-containing waste water.
Further, a drain pipe is arranged on the water treatment recovery tank; the air circulation in the water treatment recovery tank is smoother and the pressure is more stable.
The utility model discloses recovery production line of synthetic ammonia allies oneself with mellow wine technology alcohol-containing waste water's beneficial effect is, with low pressure methyl alcohol workshop section and alcohol alkylation workshop section in the pure mellow wine tower alcohol-containing waste water, after being handled into soft water through water treatment recovery tank, further apply to the rectification process as the extraction water, and then realize the effective recovery and the utilization of alcohol-containing waste water not external discharge and methyl alcohol; meanwhile, reasonable control of the material liquid level in each device is realized through a remote liquid level meter and a liquid level regulating valve, so that the whole system is operated more smoothly and efficiently; the recovery production line effectively recovers and utilizes alcohol-containing wastewater in the synthetic ammonia-alcohol technology, is energy-saving and environment-friendly, reduces sewage discharge amount and sewage treatment cost, and brings good economic benefit for enterprises.
Drawings
FIG. 1 is a schematic structural diagram of the recovery production line of alcohol-containing wastewater in the synthetic ammonia-alcohol process of the present invention.
The codes in the figures are respectively: the device comprises an alcohol alkylation alcohol washing tower 1, a low-pressure methanol alcohol washing tower 2, a water treatment recovery tank 3, a first alcohol washing pump 4-1, a second alcohol washing pump 4-2, a rectification pre-tower reflux tank 5, a remote liquid level meter 6, a liquid level regulating valve 7, a first pipeline 8-1, a second pipeline 8-2, a third pipeline 8-3, a fourth pipeline 8-4, a fifth pipeline 8-5, a sixth pipeline 8-6, a seventh pipeline 8-7, an eighth pipeline 8-8, a soft water storage tank 9, a gas making circulating water tank 10 and an emptying pipe 11.
Detailed Description
As shown in figure 1, the recovery production line of alcohol-containing wastewater in the synthetic ammonia alcohol-united process comprises an alcohol alkylation alcohol washing tower 1, a low-pressure methanol alcohol washing tower 2, a water treatment recovery tank 3, a first alcohol washing pump 4-1, a second alcohol washing pump 4-2, a rectification pre-tower reflux tank 5, a remote liquid level meter 6, a liquid level regulating valve 7, a first pipeline 8-1, a second pipeline 8-2, a third pipeline 8-3, a fourth pipeline 8-4, a fifth pipeline 8-5, a sixth pipeline 8-6, a seventh pipeline 8-7, an eighth pipeline 8-8, a soft water storage tank 9, a gas-making circulating water tank 10 and an emptying pipe 11.
An alcohol-containing wastewater outlet of an alcohol alkylation alcohol washing tower 1 is connected with a liquid inlet of a water treatment recovery tank 3 through a first pipeline 8-1, an alcohol-containing wastewater outlet of a low-pressure methanol alcohol washing tower 2 is connected with a liquid inlet of the water treatment recovery tank 3 through a second pipeline 8-2, a liquid outlet of the water treatment recovery tank 3 is connected with a liquid inlet of a first alcohol washing pump 4-1 through a third pipeline 8-3, a liquid outlet of the first alcohol washing pump 4-1 is connected with a liquid inlet of a rectification pre-tower reflux tank 5 through a fourth pipeline 8-4, a liquid inlet of a second alcohol washing pump 4-2 is connected with a third pipeline 8-3 through a fifth pipeline 8-5, a liquid outlet of the second alcohol washing pump 4-2 is connected with a fourth pipeline 8-4 through a sixth pipeline 8-6, a soft water storage tank 9 is connected with a liquid inlet of the rectification pre-tower reflux tank 5 through a seventh pipeline 8-7, a liquid outlet of the water treatment recovery tank 3 is connected with a liquid inlet of the gas-making circulating water tank 10 through an eighth pipeline 8-8; in addition, the water treatment and recovery tank 3 is provided with an emptying pipe 11, so the pipelines are all provided with valves.
The remote transmission liquid level meter 6 arranged on the alcohol alkylation alcohol washing tower 1 is connected with a liquid level regulating valve 7 arranged on a first pipeline 8-1, the remote transmission liquid level meter 6 arranged on the low-pressure methanol alcohol washing tower 2 is connected with a liquid level regulating valve 7 arranged on a second pipeline 8-2, the remote transmission liquid level meter 6 arranged on the water treatment recovery tank 3 is connected with a liquid level regulating valve 7 arranged on a fourth pipeline 8-4, and the remote transmission liquid level meter 6 arranged on the rectification pre-tower reflux tank 5 is connected with a liquid level regulating valve 7 arranged on a sixth pipeline 8-6.
The utility model discloses the technological process of synthetic ammonia allies oneself with recovery production line of mellow wine technology alcohol-containing waste water does, the process of synthetic ammonia coproduction methyl alcohol, alcohol alkylation washes mellow wine tower 1 and low pressure methyl alcohol and washes mellow wine tower 2 in alcohol-containing waste water send into water treatment recovery tank 3 through first pipeline 8-1 and second pipeline 8-2 respectively, after water treatment recovery tank 3 is handled into demineralized water, again via the effect of first alcohol washing pump 4-1 and second alcohol washing pump 4-2, send into rectification pre-tower reflux tank 5 through each pipeline in, be used for the rectification process as the extraction water; when the amount of extraction water required in the rectification process is large and the amount of the recovered alcohol-containing wastewater cannot meet the requirement, softened water stored in the soft water storage tank 9 can be supplemented into the reflux tank 5 of the rectification pre-tower, so that the influence of insufficient extraction water on the rectification process is reduced; when the rectification process stops running, the redundant alcohol-containing wastewater in the water treatment recovery tank 3 can be sent into the gas making circulating water tank 10, so that the influence of the rectification stop on the synthesis technology of the ammonia-alcohol combination is reduced; in addition, the flow of the liquid outlet of each device is regulated and controlled in real time through the matching between the remote liquid level meter 6 on each device and the matched liquid level regulating valve 7.
The synthesis ammonia alcohol-containing wastewater of the utility modelIn the course of practical use, the flow rate of the alcohol-containing wastewater in the alcohol alkylation alcohol washing tower 1 is about 1.2m3The flow rate of the alcohol-containing wastewater of the low-pressure methanol washing tower 2 is about 1.6m3After being treated by the water treatment recovery tank 3, the alcohol-containing wastewater is about 2.8m in the state that two alcohol washing pumps are simultaneously started3The flow of the flow/h enters a reflux tank 5 of the rectifying pre-tower to meet the requirement of the rectifying process; by utilizing the recovery production line, the COD content in the gas-making circulating water tank 10 can be reduced from 7000ppm to 10000ppm to 1500ppm to 3000ppm, and simultaneously, the sewage quantity discharged to a sewage treatment plant is reduced by 22000m3In one year, the soft water consumption in the rectification section is reduced by 19800m3In one year, the water saving value is about 39.8 ten thousand yuan per year, and the environmental protection benefit and the economic benefit are very obvious.
Claims (5)
1. A recovery production line of alcohol-containing wastewater in a synthetic ammonia alcohol-united process is characterized by comprising an alcohol alkylation alcohol washing tower (1), a low-pressure methanol alcohol washing tower (2), a water treatment recovery tank (3), a first alcohol washing pump (4-1), a rectification pre-tower reflux tank (5), a remote liquid level meter (6) and a liquid level regulating valve (7);
an alcohol-containing wastewater outlet of the alcohol alkylation alcohol washing tower (1) is connected with a liquid inlet of the water treatment recovery tank (3) through a first pipeline (8-1), an alcohol-containing wastewater outlet of the low-pressure methanol alcohol washing tower (2) is connected with a liquid inlet of the water treatment recovery tank (3) through a second pipeline (8-2), a liquid outlet of the water treatment recovery tank (3) is connected with a liquid inlet of a first alcohol washing pump (4-1) through a third pipeline (8-3), and a liquid outlet of the first alcohol washing pump (4-1) is connected with a liquid inlet of a rectification pre-tower reflux tank (5) through a fourth pipeline (8-4);
the alcohol alkylation alcohol washing tower is characterized in that a remote transmission liquid level meter (6) arranged on the alcohol alkylation alcohol washing tower (1) is connected with a liquid level regulating valve (7) arranged on a first pipeline (8-1), the remote transmission liquid level meter (6) arranged on the low-pressure methanol alcohol washing tower (2) is connected with the liquid level regulating valve (7) arranged on a second pipeline (8-2), and the remote transmission liquid level meter (6) arranged on the water treatment recovery tank (3) is connected with the liquid level regulating valve (7) arranged on a fourth pipeline (8-4).
2. The recycling line according to claim 1, further comprising a second alcohol washing pump (4-2); the liquid inlet of the second alcohol washing pump (4-2) is connected with the third pipeline (8-3) through a fifth pipeline (8-5), and the liquid outlet of the second alcohol washing pump (4-2) is connected with the fourth pipeline (8-4) through a sixth pipeline (8-6).
3. The recycling line according to claim 1 or 2, further comprising a soft water storage tank (9); the soft water storage tank (9) is connected with a liquid inlet of the rectifying pre-tower reflux tank (5) through a seventh pipeline (8-7), and a remote liquid level meter (6) arranged on the rectifying pre-tower reflux tank (5) is connected with a liquid level regulating valve (7) arranged on a sixth pipeline (8-6).
4. The recycling line according to claim 1 or 2, further comprising a gas-making circulation water tank (10); the liquid outlet of the water treatment recovery tank (3) is connected with the liquid inlet of the gas making circulating water tank (10) through an eighth pipeline (8-8).
5. The recycling line according to claim 1, characterized in that said water treatment recycling tank (3) is provided with a drain (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021249295.3U CN213950876U (en) | 2020-06-30 | 2020-06-30 | Recovery production line of alcohol-containing wastewater of synthetic ammonia alcohol-combining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021249295.3U CN213950876U (en) | 2020-06-30 | 2020-06-30 | Recovery production line of alcohol-containing wastewater of synthetic ammonia alcohol-combining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213950876U true CN213950876U (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021249295.3U Expired - Fee Related CN213950876U (en) | 2020-06-30 | 2020-06-30 | Recovery production line of alcohol-containing wastewater of synthetic ammonia alcohol-combining process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213950876U (en) |
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2020
- 2020-06-30 CN CN202021249295.3U patent/CN213950876U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210813 |
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| CF01 | Termination of patent right due to non-payment of annual fee |