CN203096011U - Benzene and water separation device in debenzolized rich oil - Google Patents
Benzene and water separation device in debenzolized rich oil Download PDFInfo
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- CN203096011U CN203096011U CN 201320115680 CN201320115680U CN203096011U CN 203096011 U CN203096011 U CN 203096011U CN 201320115680 CN201320115680 CN 201320115680 CN 201320115680 U CN201320115680 U CN 201320115680U CN 203096011 U CN203096011 U CN 203096011U
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- benzene
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- water
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- rich oil
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Abstract
The utility model relates to a benzene and water separation device in debenzolized rich oil. Benzene gas which is obtained from the rich oil by vacuum distillation is firstly cooled by a cooler, a benzene-water mixture is formed and enters a benzene reflux tank, the benzene-water mixture in the reflux tank is stood for separation, benzene is positioned at the upper layer, the separated water is positioned at the lower layer, benzene type non-condensable gas at the upper part of the benzene reflux tank is pumped out and discharged via a vacuum pump, and the separated water at the lower part is discharged to a closed separated water tank under the action of dead weight. The benzene and water separation device is characterized in that an equal pressure gas phase communicating pipeline is arranged between the separated water tank and the benzene reflux tank for realizing a separated water smooth discharge system, and a top discharge pipe valve is additionally arranged on the separated water tank for forming a discharge branch path. The benzene and water separation device disclosed by the utility model can essentially avoid the status that the separated water can not be discharged by utilizing a gas phase balance principle, thereby realizing a vacuum distillation way at the top of a distillation tower under any negative pressure conditions and creating a new method for realizing the vacuum distillation.
Description
Technical field
The utility model provides a kind of a kind of improvement that coking, chemical industry realize that the benzene device is taken off in the rich oil decompression that is widely used in, and belongs to chemical industry distillation technique field.
Background technology
At chemical enterprise especially coal chemical industry enterprises, the benzene hydrocarbon in the coke-oven gas need be recycled washing oil and absorb, and the washing oil after the absorption becomes rich oil, by distil process the benzene class is distilled from rich oil then, and benzene recycles again.Traditional technology generally adopts steam distillation, energy consumption height not only, also produce a large amount of steaming benzene and divide dried up sewage, contaminate environment, underpressure distillation is then avoided using steam and the production model of bringing high energy consumption, high pollution, but the cat head negative pressure of underpressure distillation is divided dried up discharge situation after being limited by benzene, water sepn, therefore, require the benzene return tank that corresponding height must be arranged according to cat head control negative pressure degree during design, but after the cat head negative pressure acquires a certain degree, branch is dried up still can't normally discharge, and can't realize the ordinary production of rich oil underpressure distillation, and process is unadjustable.
The utility model content
In order to solve the deficiencies in the prior art, the utility model utilizes the gas-liquid equilibrium principle, from having avoided dividing the dried up situation that can't discharge in essence, thereby realized that the distillation cat head is in the mode of the underpressure distillation under any condition of negative pressure, has started the implementation method of new underpressure distillation.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of benzene that takes off in the benzene rich oil, water separation device, comprise debenzolizing tower, water cooler, the benzene return tank with separate tank, described debenzolizing tower top vent is connected to the benzene return tank after by water cooler, the tank deck of benzene return tank is provided with benzene class noncondensable gas relief outlet, benzene class noncondensable gas relief outlet is connected in the coal gas negative pressure system by vacuum pump, benzene return tank bottom is divided dried up relief outlet to arrive by pipe connection and is separated tank, described separation tank is positioned at below the benzene return tank fully, on described separation tank, be provided with water port, and pump is set respectively at described benzene class noncondensable gas relief outlet and water port place, it is characterized in that, described separation tank is a sealed vessel, and is provided with an equalizing line between described separation sink top and benzene return tank top.
Be provided with at the top of described separation tank and diffuse valve, and described diffuse valve by pipe connection in the coal gas negative pressure system.
In described separation tank, be provided with liquidometer.
Be provided with liquidometer in described benzene return tank tank skin side.
The beneficial effects of the utility model are: utilize the gas-liquid equilibrium principle to realize separating tank and equate with benzene return tank air pressure inside, for the distillation tower underpressure distillation provides stable condition of negative pressure, specific as follows:
(I) can carry out any adjustment (by regulating vacuum pump) of cat head negative pressure, and not influence the dried up smooth discharge of branch according to the condition of production, and the condition of negative pressure also can realize the purpose that benzene class output increases arbitrarily simultaneously;
(II) can often reduce pressure to switch and produce (by diffusing valve and vacuum pump), when normal pressure is produced benzene class non-condensable gas drained into the coal gas negative pressure system, and the assurance system does not build the pressure, and realizes stable distillation, simultaneously emission-free effluxing;
In time regulate the benzene produced quantity and divide dried up output according to benzene return tank benzene liquid level and the dried up liquid level of branch during (III) produces, stablize benzene return tank liquid level, to keep system's negative regulation.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Among the figure: 1 debenzolizing tower, 2 water coolers, 3 benzene return tanks, 4 vacuum pumps, 5 separate tank, 6 water pumps, 7 diffuse valve, 8 equalizing lines.
Embodiment
As Fig. 1, one cover takes off benzene, the water separation device in the benzene rich oil, comprise debenzolizing tower 1, water cooler 2, benzene return tank 3 and separate tank 5, debenzolizing tower wherein is a common equipment, at the top of debenzolizing tower the mixed gas venting port is set, contains benzene and steam in the mixed gas that venting port is discharged, debenzolizing tower 1 top vent is connected to benzene return tank 3 after by water cooler, benzene return tank wherein also is a common equipment, is provided with liquidometer in described benzene return tank tank skin side.Steam composition in the condensed mixed gas is condensed into the globule, and benzene also is in gaseous state.So after the standing separation, benzene is in the upper strata to benzene-water mixture in the benzene return tank, is gaseous state, divide the dried up lower floor that is in, be liquid state.
Tank deck at benzene return tank 3 is provided with benzene class noncondensable gas relief outlet, and is connected in the coal gas negative pressure system by vacuum pump 4; Benzene return tank 3 bottoms are divided dried up relief outlet to arrive by pipe connection and are separated tank, separate tank 5 and are positioned at fully below the benzene return tank.Separating tank is a complete sealed vessel, on the separation tank, be provided with water port, be provided with liquidometer in the side of separating tank 5, be used to observe separate and divide dried up level condition in the tank, be provided with at the top of separating tank and diffuse valve 7, this diffuses valve and is connected in the coal gas negative pressure system by pipeline; Be provided with water port in the bottom of separating tank, the water port place is provided with water pump 6, will divide dried up effluxing.
Be provided with an equalizing line 8 between separation sink top and benzene return tank top, this equalizing line will separate tank and the benzene return tank connects, so its inner pressure equates.
The working process of this device is as follows:
At first, the rich oil benzene gas that autospasy benzene top of tower is discharged after underpressure distillation in debenzolizing tower enters the water cooler cooling, after overcooling, forming benzene---water mixture enters the benzene return tank then, benzene---water mixture is standing separation in the benzene return tank, benzene is in the upper strata, divide the dried up lower floor that is in, under pressure reducing mode, the benzene class non-condensable gas on benzene return tank top drains into the coal gas negative pressure system outside vacuum pump is extracted out, reuse, the branch of benzene return tank bottom is dried up to efflux to an airtight separation tank, in the separation sink top bleeder valve is set, under the normal pressure pattern, the benzene class non-condensable gas that separates tank top drains into the coal gas negative pressure system outside diffusing valve, separating the pipeline that is provided with a perforation between tank and the benzene return tank, partly form an isobaric link relation at separation tank and benzene return tank upper cavity, thereby realized dividing dried up smooth discharge system, solved the cat head negative pressure and be limited by the dried up puzzlement that can't discharge of branch.In order to realize dividing the dried up separation tank that in time drains in the benzene return tank, require to separate tank and be positioned at benzene return tank below or side-lower.The water that separates in the tank is delivered to the wastewater treatment operation through separating water pump, can divide dried up output to stablize the Distallation systm decompression by adjusting benzene in the production and produce.
The utility model provides a kind of method to the realization of underpressure distillation, utilizes the gas-liquid equilibrium principle to realize the condition of any negative pressure of rich oil de-benzene cat head, has ensured decompression distillation system steady running, has increased benzene-type products output.
When the debenzolizing tower normal pressure is produced, then stop vacuum pump, open and separate tank top bleeder valve, by dispersing valve non-condensable gas is drained into the coal gas negative pressure system;
When the debenzolizing tower decompression is produced, then start vacuum pump, simultaneously, close and separate tank top bleeder valve, by vacuum pump non-condensable gas is drained into the coal gas negative pressure system.Form following effect:
(1) technology can realize the production of any negative pressure degree of rich oil underpressure distillation cat head.
(2) can carry out atmospheric and vacuum distillation according to practical situation switches.
(3) can adjust the cat head negative pressure and realize producing light benzene or crude benzol product as requested.
(4) can keep system's negative regulation according to dividing dried up liquid level just to regulate the dried up output of branch in the benzene return tank.
(5) the benzene class non-condensable gas on benzene return tank top drains into the coal gas negative pressure system outside vacuum pump is extracted out, reclaims not have to efflux.
Embodiment recited above is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; this area person skilled all should expand as in the determined protection domain of the utility model claims various distortion of the present utility model and improvement.
Claims (4)
1. benzene that takes off in the benzene rich oil, water separation device, comprise debenzolizing tower, water cooler, the benzene return tank with separate tank, described debenzolizing tower top vent is connected to the benzene return tank after by water cooler, the tank deck of benzene return tank is provided with benzene class noncondensable gas relief outlet, benzene class noncondensable gas relief outlet is connected in the coal gas negative pressure system by vacuum pump, benzene return tank bottom is divided dried up relief outlet to arrive by pipe connection and is separated tank, described separation tank is positioned at below the benzene return tank fully, on described separation tank, be provided with water port, and pump is set respectively at described benzene class noncondensable gas relief outlet and water port place, it is characterized in that, described separation tank is a sealed vessel, and is provided with an equalizing line between described separation sink top and benzene return tank top.
2. a kind of benzene, water separation device that takes off in the benzene rich oil according to claim 1 is provided with at the top of described separation tank and diffuses valve, and described diffuse valve by pipe connection in the coal gas negative pressure system.
3. a kind of benzene, water separation device that takes off in the benzene rich oil according to claim 2 is provided with liquidometer in described separation tank.
4. a kind of benzene, water separation device that takes off in the benzene rich oil according to claim 3 is provided with liquidometer in described benzene return tank tank skin side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320115680 CN203096011U (en) | 2013-03-14 | 2013-03-14 | Benzene and water separation device in debenzolized rich oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320115680 CN203096011U (en) | 2013-03-14 | 2013-03-14 | Benzene and water separation device in debenzolized rich oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203096011U true CN203096011U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320115680 Expired - Fee Related CN203096011U (en) | 2013-03-14 | 2013-03-14 | Benzene and water separation device in debenzolized rich oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203096011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160334A (en) * | 2013-03-14 | 2013-06-19 | 济钢集团有限公司 | Method and device for separation of benzene and water in debenzolized rich oil |
| CN114733221A (en) * | 2022-04-24 | 2022-07-12 | 南通利奥化工科技有限公司 | Rectifying tower for quickly heating and vaporizing materials |
-
2013
- 2013-03-14 CN CN 201320115680 patent/CN203096011U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160334A (en) * | 2013-03-14 | 2013-06-19 | 济钢集团有限公司 | Method and device for separation of benzene and water in debenzolized rich oil |
| CN114733221A (en) * | 2022-04-24 | 2022-07-12 | 南通利奥化工科技有限公司 | Rectifying tower for quickly heating and vaporizing materials |
| CN114733221B (en) * | 2022-04-24 | 2023-03-28 | 南通利奥化工科技有限公司 | Rectifying tower for quickly heating and vaporizing materials |
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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: 20130731 Termination date: 20170314 |
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| CF01 | Termination of patent right due to non-payment of annual fee |