CN202237334U - Vacuum pump special for debenzolization tower - Google Patents
Vacuum pump special for debenzolization tower Download PDFInfo
- Publication number
- CN202237334U CN202237334U CN2011203280701U CN201120328070U CN202237334U CN 202237334 U CN202237334 U CN 202237334U CN 2011203280701 U CN2011203280701 U CN 2011203280701U CN 201120328070 U CN201120328070 U CN 201120328070U CN 202237334 U CN202237334 U CN 202237334U
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- Prior art keywords
- vacuum pump
- vavuum pump
- air suction
- communicated
- main pipe
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Abstract
The utility model provides a vacuum pump special for a debenzolization tower. The vacuum pump comprises a first vacuum pump and a second vacuum pump, wherein the air suction port of the first vacuum pump is communicated with the air suction port of the second vacuum pump through an air suction main pipe; the air suction main pipe is provided with an air inlet pipeline; the air outlet of the first vacuum pump is communicated with the air outlet of the second vacuum pump through an air outlet main pipe; the air outlet main pipe is provided with an exhaust pipeline; the air suction main pipe is communicated with the air outlet main pipe through a bypass pipe; an electric control valve is arranged on the bypass pipe; the electric control valve, the first vacuum pump and the second vacuum pump are connected with a controller through leads; and the controller is connected with a pressure sensor arranged on the top of the debenzolization tower through a lead. Due to the adoption of the vacuum pump, a flow speed can be adjusted at any time according to the pressure in the debenzolization tower, a stable pressure in the tower is ensured, and the condition of reduction in product quality caused by the entrance of water into a working medium is avoided.
Description
Technical field
The utility model relates to a kind of vavuum pump, specifically a kind of debenzolizing tower vacuum pump.
Background technology
Existing de-benzene process is under atmospheric pressure environment, to take off benzene through vapor distillation method, and the crude benzol separation water yield that produces in this art production process is very big, and the processing cost of coking chemical waste water is higher, does not meet the energy-saving and emission-reduction requirement that country proposes.For addressing this problem; Those skilled in the art have designed negative pressure benzene removal technology in recent years, use vavuum pump in debenzolizing tower, to form negative pressure and take off benzene, reduce crude benzol and separate the water yield; Reduce the processing cost of coking chemical waste water, meet the requirement of the energy-saving and emission-reduction of country's proposition more.But the vavuum pump that uses in the negative pressure benzene removal technology at present is universal vavuum pump, can't regulate flow velocity according to the pressure in the debenzolizing tower during use, can cause the fluctuation of debenzolizing tower internal pressure when therefore using, and makes water get into working media, influences product quality.
The utility model content
The purpose of the utility model provides a kind of debenzolizing tower vacuum pump, and it can regulate flow velocity at any time according to the pressure condition in the desulfurizing tower, guarantees that the tower internal pressure is stable, avoids occurring that water gets into working media and the situation that causes product quality to descend.
The utility model is for realizing above-mentioned purpose; Realize through following technical scheme: comprise first vavuum pump and second vavuum pump; Be communicated with through air suction main between the air entry of the air entry of first vavuum pump and second vavuum pump; Admission line is set on the air suction main, is communicated with through the house steward that gives vent to anger between the gas outlet of the gas outlet of first vavuum pump and second vavuum pump, on the house steward that gives vent to anger discharge duct is set; Air suction main is communicated with through bypass pipe with the house steward that gives vent to anger; Motor-operated control valve is installed on the bypass pipe, and motor-operated control valve, first vavuum pump and second vavuum pump all are connected with controller through lead, and controller is connected with the pressure sensor that is installed in the debenzolizing tower top through lead.First stop valve and second stop valve are installed respectively on the bypass pipe at motor-operated control valve two ends.
The advantage of the utility model is: can regulate flow velocity at any time according to the pressure condition in the desulfurizing tower, guarantee that the tower internal pressure is stable, avoid occurring that water gets into working media and the situation that causes product quality to descend; When changing motor-operated control valve, take off benzene equipment and need not shut down etc.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
The described a kind of debenzolizing tower vacuum pump of the utility model; Comprise first vavuum pump 1 and second vavuum pump 2; Be communicated with through air suction main 5 between the air entry 3 of first vavuum pump 1 and the air entry 4 of second vavuum pump 2; Be communicated with through the house steward 9 that gives vent to anger between the gas outlet 7 that admission line 6, the first vavuum pumps 1 are set on the air suction main 5 and the gas outlet 8 of second vavuum pump 2, on the house steward 9 that gives vent to anger discharge duct 10 be set; Air suction main 5 is communicated with through bypass pipe 11 with the house steward 9 that gives vent to anger; Motor-operated control valve 12 is installed on the bypass pipe 11, and motor-operated control valve 12, first vavuum pump 1 and second vavuum pump 2 all are connected with controller 13 through lead, and controller 13 is connected with the pressure sensor that is installed in the debenzolizing tower top 14 through lead.During use, admission line 6 is communicated with the debenzolizing tower top, and discharge duct 10 is communicated with negative-pressure pipeline; During vavuum pump work the gas in the debenzolizing tower is extracted out, discharged, make to keep negative pressure in the debenzolizing tower through negative-pressure pipeline; First vavuum pump 1 and second vavuum pump 2 switch use each other, are convenient to vavuum pump is safeguarded that bypass pipe 11 is located at air suction main 5 and gives vent to anger between the house steward 9; A part of gas that vavuum pump is extracted out returns air suction main 5, keeps the debenzolizing tower internal pressure stable, and pressure sensor 14 can be monitored the pressure at debenzolizing tower top; And pressure data transferred to controller 13, and to cross when low when the debenzolizing tower top pressure, controller 13 increases the aperture of motor-operated control valves 12 spools; Increase the flow of bypass pipe 11, the debenzolizing tower internal pressure is risen; When the debenzolizing tower top pressure was too high, controller 13 reduced the aperture of motor-operated control valve 12 spools, reduced the flow of bypass pipe 11, and the debenzolizing tower internal pressure is descended.The utility model can be regulated flow velocity at any time according to the pressure condition in the desulfurizing tower, guarantees that the tower internal pressure is stable, avoids occurring that water gets into working media and the situation that causes product quality to descend.
The utility model can be installed first stop valve 15 and second stop valve 16 respectively for the ease of motor-operated control valve 12 is changed on the bypass pipe 11 at motor-operated control valve 12 two ends.When motor-operated control valve 12 breaks down or sensitivity decline, when needing to change, can close first stop valve 15 and second stop valve, 16 disconnection bypass pipes 11, motor-operated control valve 12 is changed, but taken off benzene equipment operate as normal this moment, need not shut down.
Claims (2)
1. debenzolizing tower vacuum pump; It is characterized in that: comprise first vavuum pump (1) and second vavuum pump (2); Be communicated with through air suction main (5) between the air entry (3) of first vavuum pump (1) and the air entry (4) of second vavuum pump (2); Admission line (6) is set on the air suction main (5); Be communicated with through the house steward that gives vent to anger (9) between the gas outlet (7) of first vavuum pump (1) and the gas outlet (8) of second vavuum pump (2); Giving vent to anger is provided with discharge duct (10) on the house steward (9), and air suction main (5) and the house steward that gives vent to anger (9) are communicated with through bypass pipe (11), and bypass pipe (11) is gone up motor-operated control valve (12) is installed; Motor-operated control valve (12), first vavuum pump (1) and second vavuum pump (2) all are connected with controller (13) through lead, and controller (13) is connected with the pressure sensor that is installed in the debenzolizing tower top (14) through lead.
2. a kind of debenzolizing tower vacuum pump according to claim 1 is characterized in that: first stop valve (15) and second stop valve (16) are installed respectively on the bypass pipe (11) at motor-operated control valve (12) two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203280701U CN202237334U (en) | 2011-09-02 | 2011-09-02 | Vacuum pump special for debenzolization tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203280701U CN202237334U (en) | 2011-09-02 | 2011-09-02 | Vacuum pump special for debenzolization tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202237334U true CN202237334U (en) | 2012-05-30 |
Family
ID=46098639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203280701U Expired - Fee Related CN202237334U (en) | 2011-09-02 | 2011-09-02 | Vacuum pump special for debenzolization tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202237334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043259A (en) * | 2014-06-28 | 2014-09-17 | 济钢集团有限公司 | Benzene distillation device with negative-pressure control device |
-
2011
- 2011-09-02 CN CN2011203280701U patent/CN202237334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043259A (en) * | 2014-06-28 | 2014-09-17 | 济钢集团有限公司 | Benzene distillation device with negative-pressure control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20170902 |