CN203002103U - Vacuum tail-gas treatment system for benzene hydrogenation device - Google Patents
Vacuum tail-gas treatment system for benzene hydrogenation device Download PDFInfo
- Publication number
- CN203002103U CN203002103U CN 201220675609 CN201220675609U CN203002103U CN 203002103 U CN203002103 U CN 203002103U CN 201220675609 CN201220675609 CN 201220675609 CN 201220675609 U CN201220675609 U CN 201220675609U CN 203002103 U CN203002103 U CN 203002103U
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- CN
- China
- Prior art keywords
- separation tank
- treatment system
- tank body
- gas treatment
- benzene hydrogenation
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Abstract
The utility model discloses a vacuum tail-gas treatment system for a benzene hydrogenation device. The vacuum tail-gas treatment system comprises a vacuum pump, a separation tank and further comprises a secondary liquid separation tank; the separation tank is connected with the vacuum pump; the gas inlet of the secondary liquid separation tank is connected with the gas outlet of the separation tank through a gas inlet pipe; the secondary liquid separation tank is cylindrical in shape; one stop plate and two baffle plates are arranged in the secondary liquid separation tank; the gas inlet is formed at the bottom of the secondary liquid separation tank; the top of the secondary liquid separation tank is provided with a gas outlet, and the lower part is provided with a liquid discharge pipe; the liquid discharge pipe is provided with a liquid discharge valve; the secondary liquid separation tank is externally coated with a heat preserving layer; and a heating pipe is arranged outside the liquid discharge pipe. According to the vacuum tail-gas treatment system disclosed by the utility model, the liquid in tail gas is removed by the secondary liquid separation tank, and the secondary liquid separation tank and the pipes are prevented from being frozen in winter by the heat preserving layer and the heating device, thus the normal operation of the benzene hydrogenation device can be guaranteed.
Description
Technical field
The utility model belongs to chemical industry equipment, relates in particular to a kind of vacuum tail gas treatment system for the benzene hydrogenation device.
Background technology
Benzene hydrogenation master device district has two cover vacuum systems, respectively the prefractionator vacuum system of Unit 100 and the solvent recovery tower vacuum system of Unit 200, to provide vacuum environment for the generation that prevents high temperature olefinic polymerization and solvolysis, to reduce operating temperature.Vacuum system mainly is divided into liquid-ring vacuum pump and knockout drum, and working solution is designed to mixed xylenes.Vacuumize the tail gas that produces and drain into the dispersing gas system by the knockout drum top.Due to some odjective causes, make recirculated water motion device pressure not reach designing requirement, cause some condensate cooler cooling effects undesirable, in backflash, temperature will exceed design temperature, and the amount that the liquid in negative pressure trough is vaporized vavuum pump just can increase, simultaneously also can increase the load of vavuum pump, so that the knockout drum liquid level goes up, and vacuum tail gas band liquid measure increases, until during winter, exhaust emission pipeline can because band liquid too much freezes to stop up, bring great inconvenience to operation.
Summary of the invention
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of vacuum tail gas treatment system for the benzene hydrogenation device, can solve vacuum tail gas band liquid problem, and guarantees equipment normal production in the winter time.
for achieving the above object, the utility model adopts following technical scheme: a kind of vacuum tail gas treatment system for the benzene hydrogenation device, comprise vavuum pump and the knockout drum that is connected with vavuum pump, comprise that also secondary divides flow container, secondary divides the air inlet of flow container to be connected with the gas outlet of knockout drum by air inlet pipe, secondary separatory tank is cylindrical, a baffle plate and two deflection plates are housed in tank body, air inlet is positioned at tank body lower part, the gas outlet is positioned at the top of tank body, tank body lower part is equipped with discharging tube, tapping valve is arranged on discharging tube, tank body is coated with heat-insulation layer, discharging tube is equipped with heating tube outward.
Described heating tube is coiled on discharging tube, and heating tube is connected with thermal source, and described thermal source is hot water or steam.
Described baffle plate is vertical with the tank body center line, and the top of the first deflection plate is connected with baffle plate, and sieve aperture is arranged at the top of the first deflection plate, and the top edge of the second deflection plate is connected with baffle plate, below and between at the bottom of tank air flue is arranged.
Be furnished with heating resistance wire in heat-insulation layer.
Adopt the vacuum tail gas treatment system of technique scheme, divide flow container to remove liquid in tail gas by secondary, guarantee that by heat-insulation layer and heater frozen problem does not appear in tank body and pipeline in the winter time, thereby guarantee the normal operation of benzene hydrogenation device.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
the vacuum tail gas treatment system that is used for the benzene hydrogenation device as shown in Figure 1, comprise vavuum pump 13 and the knockout drum 12 that is connected with vavuum pump, comprise that also secondary divides flow container, secondary divides the air inlet of flow container to be connected with the gas outlet of knockout drum by air inlet pipe 11, secondary separatory tank 4 is cylindrical, air inlet is positioned at tank body lower part, gas outlet 8 is positioned at the top of tank body, a baffle plate 7 and two deflection plates are housed in tank body, baffle plate 7 is vertical with the tank body center line, two deflection plates are all parallel with the tank body center line, the dual-side of the first deflection plate 10 is connected with tank body 4, the top of the first deflection plate 10 is connected with baffle plate 7, sieve aperture 9 is arranged at the top of the first deflection plate, the top edge of the second deflection plate 6 is connected with baffle plate 7, below and between at the bottom of tank air flue is arranged.Discharging tube 2 is equipped with in tank body 4 bottoms, and tapping valve 3 is arranged on discharging tube, and tank body 4 is coated with heat-insulation layer 5, the outer heating tube 1 that is equipped with of discharging tube 2.Heating tube 1 is for being coiled in the copper pipe on discharging tube, and heating tube is connected with thermal source, and thermal source can be hot water or steam.Be furnished with heating resistance wire in heat-insulation layer 5, where necessary can heating power, guarantee that secondary separatory tank has enough temperature.
Entering secondary by out vacuum tail gas in knockout drum divides in flow container, pass through from the sieve aperture on the first deflection plate top, following through the second deflection plate again, send from the gas outlet at tank body top at last, be beneficial to fluid separation applications with the stroke that lengthens vacuum tail gas, liquid flow to secondary separatory pot bottom and regularly drains into the raw material emptying groove by tapping valve, is delivered at last the oil depot raw material tank and recycles.Final vacuum tail gas through after the secondary separatory of discharging does not contain liquid substantially, has reduced the labour intensity of execute-in-place, has guaranteed the particularly normal production in winter of benzene hydrogenation device.
Claims (4)
1. vacuum tail gas treatment system that is used for the benzene hydrogenation device, comprise vavuum pump and the knockout drum that is connected with vavuum pump, it is characterized in that: comprise that also secondary divides flow container, secondary divides the air inlet of flow container to be connected with the gas outlet of knockout drum by air inlet pipe, secondary separatory tank is cylindrical, a baffle plate and two deflection plates are housed in tank body, air inlet is positioned at tank body lower part, the gas outlet is positioned at the top of tank body, tank body lower part is equipped with discharging tube, tapping valve is arranged on discharging tube, and tank body is coated with heat-insulation layer, and discharging tube is equipped with heating tube outward.
2. the vacuum tail gas treatment system for the benzene hydrogenation device as claimed in claim 1, it is characterized in that: described heating tube is coiled on discharging tube, and heating tube is connected with thermal source, and described thermal source is hot water or steam.
3. the vacuum tail gas treatment system for the benzene hydrogenation device as claimed in claim 1, it is characterized in that: described baffle plate is vertical with the tank body center line, the top of the first deflection plate is connected with baffle plate, sieve aperture is arranged at the top of the first deflection plate, the top edge of the second deflection plate is connected with baffle plate, below and between at the bottom of tank air flue is arranged.
4. the vacuum tail gas treatment system for the benzene hydrogenation device as claimed in claim 1, is characterized in that: be furnished with heating resistance wire in heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675609 CN203002103U (en) | 2012-12-10 | 2012-12-10 | Vacuum tail-gas treatment system for benzene hydrogenation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675609 CN203002103U (en) | 2012-12-10 | 2012-12-10 | Vacuum tail-gas treatment system for benzene hydrogenation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203002103U true CN203002103U (en) | 2013-06-19 |
Family
ID=48593741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675609 Expired - Fee Related CN203002103U (en) | 2012-12-10 | 2012-12-10 | Vacuum tail-gas treatment system for benzene hydrogenation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203002103U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861385A (en) * | 2012-12-10 | 2014-06-18 | 河南宇天化工有限公司 | Vacuum tail gas treatment system for benzene hydrogenation device |
-
2012
- 2012-12-10 CN CN 201220675609 patent/CN203002103U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861385A (en) * | 2012-12-10 | 2014-06-18 | 河南宇天化工有限公司 | Vacuum tail gas treatment system for benzene hydrogenation device |
| CN103861385B (en) * | 2012-12-10 | 2017-04-05 | 河南宇天化工有限公司 | A kind of vacuum tail gas processing system for benzol hydro refining unit |
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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 |
Granted publication date: 20130619 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |