CN208526214U - A kind of de- benzene device of low energy consumption local decompression - Google Patents
A kind of de- benzene device of low energy consumption local decompression Download PDFInfo
- Publication number
- CN208526214U CN208526214U CN201820544512.8U CN201820544512U CN208526214U CN 208526214 U CN208526214 U CN 208526214U CN 201820544512 U CN201820544512 U CN 201820544512U CN 208526214 U CN208526214 U CN 208526214U
- Authority
- CN
- China
- Prior art keywords
- benzene
- oil
- energy consumption
- washing
- slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a kind of low energy consumption local decompressions to take off benzene device, including the heat exchange of debenzolized oil oil, washing oil heating, de- benzene fixed gas condensing recovery, vacuum pump set, regenerated liquid circulating gas-lifting and benzene separation and recovery etc..The utility model sufficiently parses the rich oil for washing benzene, the benzene content in washing oil is effectively reduced, residual benzene content is reduced to the impurity such as minimum (< 0.2g/l), other nocuousness all by regenerating outside removal system, sufficiently improves washing oil quality, extends physical life.
Description
Technical field
The utility model relates to a kind of de-benzene process technologies, take off benzene device more particularly, to a kind of low energy consumption local decompression.
Background technique
With the fast development of petrochemical industry and coal chemical industry, the environmental consciousness of people is increasingly improved, exhaust gas, waste water,
Waste sludge discharge problem causes global extensive attention.Coking industry scale is huge in China, and annual production capacity is at 4.5 hundred million tons
More than.
Related product is recovered as enterprise and brings great economic benefit in coke-stove gas utilization and gas, while avoiding subsequent coal
Harm of the gas deep exploitation to other catalyst.Wherein the content of benzene is in 8g/m3Left and right, and the recycling to benzene, the country pass
Technology of uniting is constant always, wherein coke-stove gas diamond heating mode is continued up to rich oil heating, so causing energy consumption
Height, there are waste residue, exhaust gas, the big problems of Wastewater Pollutant discharge amount, in order to solve the above problem, in conjunction with vacuum distillation, UTILIZATION OF VESIDUAL HEAT IN
And washing oil feature, develop this technology.
Utility model content
The technical issues of the utility model devises a kind of de- benzene device of low energy consumption local decompression, solves is the de- benzene of tradition
Coke-stove gas diamond heating mode is continued up to rich oil heating in technique, thus cause energy consumption it is high, there are waste residue, exhaust gas,
The big problem of Wastewater Pollutant discharge amount.
In order to solve above-mentioned technical problem, the utility model uses following scheme:
A kind of de- benzene device of low energy consumption local decompression, the gas-liquid mixture containing benzene for washing benzene column (1) output enter rich oil slot (3)
In, the washing oil in oil-poor slot (5) is also entered in rich oil slot (3) by oil-poor pump (4) to be mixed with, the mixing in rich oil slot (3)
Object is sent after being heated by rich oil pump (2) output to heater (8) to debenzolizing tower (10), and debenzolizing tower (10) top comes out
The mixture containing benzene vapor sequentially enter fixed gas cooler (11), vacuum pump (12) and carry out gas-liquid separation separator
(14), finally the benzene separated is stored in crude benzol tank (13), it is characterised in that: the output of heater (8) enters de- benzene
Tower (10) top makes benzene vapor uplink, the oily downlink containing benzene；Hot steam and debenzolizing tower (10) that the external world comes include the washing oil of benzene
Enter after regenerator (9) parsing together and enters from debenzolizing tower (10) lower part again so that entering debenzolizing tower containing benzene vapor after parsing
(10) top, debenzolizing tower (10) top, which carries out Negative pressure by the vacuum pump (12), reduces tower top distillation boiling point.
Further, debenzolizing tower (10) bottom is returned to the washing oil after separating with benzene by reflux line described oil-poor
It is recycled in slot (5).
Further, it is also connected on the reflux line oily oil heat exchanger (7), the oil oil heat exchanger (7) is described in entrance
Gas-liquid mixture containing benzene before heater (8) carries out heating and heats.
Further, oil-poor cooler (6) are additionally provided on the reflux line close to oil-poor slot (5) end.
Further, the fixed gas that the separator (14) is also isolated is washed, removes gas main after separation.
A kind of low energy consumption local decompression takes off the de- benzene method of benzene device, comprising the following steps:
Step 1, the gas-liquid mixture containing benzene for washing benzene column (1) output enter in rich oil slot (3), the washing oil in oil-poor slot (5)
Also entered in rich oil slot (3) by oil-poor pump (4) and be mixed with, the final mixture in rich oil slot (3) is defeated by rich oil pump (2)
It send to heater (8)；
The final mixture is heated to 180 DEG C of temperatures above by step 2, the heater (8)；
Step 3, the heater (8) output enter debenzolizing tower (10) top and make benzene vapor uplink, the oil containing benzene
Downlink；The washing oil that the hot steam and debenzolizing tower (10) that the external world comes include benzene enters after regenerator (9) parsing together again from debenzolizing tower
(10) lower part enters so that entering at the top of debenzolizing tower (10) after parsing containing benzene vapor；
Entering after fixed gas cooler (11) containing benzene vapour for coming out at the top of step 4, the debenzolizing tower (10) enters back into very
Sky pump (12) makes debenzolizing tower (10) top be partially formed vacuum after vacuum pump (12) are extracted, and enhancing distilling effect reduces de- benzene
Tower (10) temperature；
The fixed gas that step 5, vacuum pump (12) export realizes gas-liquid separation through separator (14), isolates product crude benzol and deposits
Enter in crude benzol tank (13).
Further, in step 3 debenzolizing tower (10) bottom the washing oil after separating with benzene is returned to by reflux line it is described
It is recycled in oil-poor slot (5).
Further, it is also connected on the reflux line oily oil heat exchanger (7), the oil oil heat exchanger (7) is described in entrance
Gas-liquid mixture containing benzene before heater (8) carries out heating and heats.
Further, oil-poor cooler (6) are additionally provided on the reflux line close to oil-poor slot (5) end.
Further, the fixed gas that separator described in step 5 (14) is isolated is washed, removes gas main after separation.
The low energy consumption local decompression takes off benzene device and has the advantages that
(1) the utility model both can guarantee that technique reduced pollutant discharge amount using operating index itself, and can sufficiently return
Receive the benzene parsing recycling for having both environmental benefit and economic benefit of benzene resource.
(2) the utility model sufficiently parses the rich oil for washing benzene, and the benzene content in washing oil is effectively reduced, and residual benzene contains
Amount is reduced to the impurity such as minimum (< 0.2g/l), other nocuousness and all passes through outside regeneration removal system, abundant raising washing oil quality,
Extend physical life.
(3) the utility model makes full use of coking prior art to optimize combination, using vacuum system, makes debenzolizing tower top
It is partially formed vacuum, enhancing distilling effect reduces debenzolizing tower top temperature.
(4) the utility model investment is small, operating cost is low, operating flexibility is big, greatly prolongs washing oil utility time, effectively drops
Low oil washing consumption, the benzene rate of recovery >=99 % are effectively reduced benzene in debenzolizing tower exit gas and contain after the de- benzene of process is practical before washing oil returns
Measure (≤0.1g/m3, it is far below professional standard), process energy consumption reduces by 30%, and wastewater discharge reduces by 40%.
(5) the utility model technology is since there is no coke-stove gas, so pollutant SO2, NOx, VOC etc. do not deposit
Meeting national energy and is recycling and energy-saving and emission-reduction requirement.
Detailed description of the invention
Fig. 1: the utility model low energy consumption local decompression takes off the process flow diagram of benzene device.
Description of symbols:
1-washes benzene column；2-rich oils pump；3-rich oil slots；4-oil-poor pumps;5-oil-poor slots；6-oil-poor coolers；7-oil
Oil heat exchanger；8-heaters；9-regenerators；10-debenzolizing towers；11-fixed gas coolers；12-vacuum pumps；13-crude benzol
Tank；14-separators.
Specific embodiment
Below with reference to Fig. 1, the utility model is described further:
The utility model low energy consumption local decompression de-benzene process technology, including the heat exchange of debenzolized oil oil, washing oil heating, de- benzene are not
Solidifying gas condensing recovery, vacuum pump set, regenerated liquid circulating gas-lifting and benzene separation and recovery etc..
As shown in Figure 1, a kind of low energy consumption local decompression takes off benzene device, the gas-liquid mixture containing benzene for washing the output of benzene column 1 enters
In rich oil slot 3, the washing oil in oil-poor slot 5 is also entered in rich oil slot 3 by oil-poor pump 4 to be mixed with, the mixture in rich oil slot 3
It send after being heated by 2 output of rich oil pump to heater 8 to debenzolizing tower 10, what is come out at the top of debenzolizing tower 10 contains benzene vapor
Mixture sequentially enter fixed gas cooler 11, vacuum pump 12 and carry out gas-liquid separation separator 14, will finally isolate
In the benzene deposit crude benzol tank 13 come, it is characterised in that: the output of heater 8 enters 10 top of debenzolizing tower and makes on benzene vapor
Row, the oily downlink containing benzene；The external world come hot steam and debenzolizing tower 10 include benzene washing oil enter together regenerator 9 parse after again from
10 lower part of debenzolizing tower enters so that entering at the top of debenzolizing tower 10 after parsing containing benzene vapor, by vacuum pump 12 at the top of debenzolizing tower 10
Carrying out Negative pressure reduces tower top distillation boiling point.
Washing oil after separating with benzene is returned in oil-poor slot 5 by reflux line and is recycled by 10 bottom of debenzolizing tower.It returns
Oily oil heat exchanger 7 is also connected on flow tube road, 7 pairs of oily oil heat exchanger add into the gas-liquid mixture containing benzene before heater 8
Heat heats.Oil-poor cooler 6 is additionally provided on the reflux line close to oil-poor 5 end of slot.The fixed gas that separator 14 is also isolated
Gas main is removed after washed, separation.
The working principle that the utility model low energy consumption local decompression takes off benzene device is as follows:
Step 1, the gas-liquid mixture containing benzene for washing the output of benzene column 1 enter in rich oil slot 3, and the washing oil in oil-poor slot 5 passes through poor
Oil pump 4, which also enters in rich oil slot 3, to be mixed with, and the final mixture in rich oil slot 3 is delivered to heater 8 by rich oil pump 2.
Final mixture is heated to 180 DEG C of temperatures above by step 2, heater 8.
Step 3, heater 8 output enter 10 top of debenzolizing tower and make benzene vapor uplink, the oily downlink containing benzene；It is extraneous
Come hot steam and debenzolizing tower 10 include benzene washing oil enter together regenerator 9 parse after again from 10 lower part of debenzolizing tower enter so that
10 top of debenzolizing tower is entered containing benzene vapor after parsing.
Containing after benzene vapour enters fixed gas cooler 11 for coming out at the top of step 4, debenzolizing tower 10 enters back into vacuum pump 12, passes through
After vacuum pump 12 extracts, the top of debenzolizing tower 10 is made to be partially formed vacuum, enhancing distilling effect reduces by 10 temperature of debenzolizing tower, and takes off
It is lower that benzene column 1 pushes up air outlet temperature.
The fixed gas that step 5, vacuum pump 12 export realizes gas-liquid separation through separator 14, and it is thick to isolate the deposit of product crude benzol
In benzene tank 13.
The washing oil after separating with benzene is returned in oil-poor slot 5 by reflux line and is recycled by 10 bottom of debenzolizing tower in step 3
It uses.
Illustrative description has been carried out to the utility model above in conjunction with attached drawing, it is clear that the realization of the utility model not by
The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without
It improves and the conception and technical scheme of the utility model is directly applied into other occasions, in the protection scope of the utility model
It is interior.
Claims (5)
1. a kind of low energy consumption local decompression takes off benzene device, the gas-liquid mixture containing benzene for washing benzene column (1) output enters rich oil slot (3)
In, the washing oil in oil-poor slot (5) is also entered in rich oil slot (3) by oil-poor pump (4) to be mixed with, the mixing in rich oil slot (3)
Object is sent after being heated by rich oil pump (2) output to heater (8) to debenzolizing tower (10), and debenzolizing tower (10) top comes out
The mixture containing benzene vapor sequentially enter fixed gas cooler (11), vacuum pump (12) and carry out gas-liquid separation separator
(14), finally the benzene separated is stored in crude benzol tank (13), it is characterised in that: the output of heater (8) enters de- benzene
Tower (10) top makes benzene vapor uplink, the oily downlink containing benzene；Hot steam and debenzolizing tower (10) that the external world comes include the washing oil of benzene
Enter after regenerator (9) parsing together and enters from debenzolizing tower (10) lower part again so that entering debenzolizing tower containing benzene vapor after parsing
(10) top, debenzolizing tower (10) top, which carries out Negative pressure by the vacuum pump (12), reduces tower top distillation boiling point.
2. low energy consumption local decompression takes off benzene device according to claim 1, it is characterised in that: debenzolizing tower (10) bottom is logical
It crosses reflux line and the washing oil after separating with benzene is returned into recycling in the oil-poor slot (5).
3. low energy consumption local decompression takes off benzene device according to claim 2, it is characterised in that: be also connected on the reflux line
Oily oil heat exchanger (7), the oil oil heat exchanger (7) add the gas-liquid mixture containing benzene before entering the heater (8)
Heat heats.
4. low energy consumption local decompression takes off benzene device according to claim 3, it is characterised in that: close to the oil-poor slot (5)
Oil-poor cooler (6) are additionally provided on the reflux line at end.
5. low energy consumption local decompression described in any one of -4 takes off benzene device according to claim 1, it is characterised in that: the separation
The fixed gas that device (14) is also isolated is washed, removes gas main after separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820544512.8U CN208526214U (en) | 2018-04-17 | 2018-04-17 | A kind of de- benzene device of low energy consumption local decompression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820544512.8U CN208526214U (en) | 2018-04-17 | 2018-04-17 | A kind of de- benzene device of low energy consumption local decompression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208526214U true CN208526214U (en) | 2019-02-22 |
Family
ID=65396006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820544512.8U Active CN208526214U (en) | 2018-04-17 | 2018-04-17 | A kind of de- benzene device of low energy consumption local decompression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208526214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380005A (en) * | 2018-04-17 | 2018-08-10 | 沂州科技有限公司 | A kind of de- benzene device of low energy consumption local decompression and its de- benzene method |
-
2018
- 2018-04-17 CN CN201820544512.8U patent/CN208526214U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380005A (en) * | 2018-04-17 | 2018-08-10 | 沂州科技有限公司 | A kind of de- benzene device of low energy consumption local decompression and its de- benzene method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103418210B (en) | CO2 full capture and H2S enrichment process | |
| RU2762566C2 (en) | System and method for gas synthesis for rectification of ethylene glycol in production of ethylene glycol | |
| CN103420442B (en) | Method for extracting high-concentration phenol-containing coal chemical industry wastewater at high temperature by using methyl isobuthyl ketone | |
| CN105154144B (en) | A kind of negative pressure benzene removal device and de- benzene method | |
| CN105013296A (en) | Natural gas desulfuration and decarbonization system and method coupling acid gas concentration | |
| CN106673014A (en) | Process of removing sulfur and ammonia from coke gas to prepare ammonia water | |
| CN103555377B (en) | A kind of de-benzene method of decompression | |
| CN102863112A (en) | Phenol and ammonia wastewater recycling treatment method by using single tower for performing de-acidification and de-amination simultaneously | |
| CN105036443A (en) | Method and device for treating phenol ammonia wastewater in single-tower stripping mode by recovering steam condensate heat | |
| CN103045298A (en) | System for recovering cracking fraction fuel in waste oil | |
| CN110804486B (en) | Method and system for regenerating waste lubricating oil | |
| CN112011357A (en) | Refinery gas separation and recovery method and system | |
| CN208526214U (en) | A kind of de- benzene device of low energy consumption local decompression | |
| CN105733647A (en) | Method for recovering liquefied petroleum gas from Fischer-Tropsch synthesis tail gas | |
| CN100491245C (en) | Method for preparing liquid carbon dioxide in foodstuff level by using tail gas of cement kiln | |
| CN104529704A (en) | Joint production system and joint production process for synthesizing and separating low-carbon mixed alcohol | |
| CN108048147B (en) | Amine liquid regeneration system and process applied to floating liquefied natural gas facility | |
| CN104845657A (en) | Purification system and process for recycling residual light oil in shale oil dry distillation tail gas | |
| CN104624022A (en) | Double-absorption and double-desorption hydrogen gas and light hydrocarbon comprehensive recovery system | |
| CN215886928U (en) | Purification system of raw gas | |
| CN212335119U (en) | Refinery gas separation and recovery system | |
| CN108380005A (en) | A kind of de- benzene device of low energy consumption local decompression and its de- benzene method | |
| CN210831944U (en) | Solvent regeneration waste heat recycling system | |
| CN203989925U (en) | A kind of heat pump distillation energy saver | |
| CN109824481B (en) | Improvement method for improving yield of acetaldehyde system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |