CN105419861B - The separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process - Google Patents
The separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process Download PDFInfo
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- CN105419861B CN105419861B CN201511027528.9A CN201511027528A CN105419861B CN 105419861 B CN105419861 B CN 105419861B CN 201511027528 A CN201511027528 A CN 201511027528A CN 105419861 B CN105419861 B CN 105419861B
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- heavy
- heavy hydrocarbon
- oil
- separator
- water
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1037—Hydrocarbon fractions
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process, including one section of inlet buffer of product air compressor, heavy hydrocarbon flash tank and oil water separator；The bottom discharge mouthful of wherein one section of inlet buffer of product air compressor is connected with the charging aperture of heavy hydrocarbon flash tank, and the flash liquid discharging opening of heavy hydrocarbon flash tank bottom is connected with the charging aperture of oil water separator；The gas phase discharging opening of the heavy hydrocarbon flash drum overhead is connected to the product gas import of one section of inlet buffer of compressor；The oil water separator sets oil phase discharging opening and aqueous phase discharging opening respectively, and oil phase discharging opening is connected with C6 product storage tanks, and aqueous phase discharging opening is connected with oxide stripper.Described device realizes the recycling to heavy hydrocarbon, heavy oil and oxide in MTO technical process, can economize on resources, reduce production cost.Simultaneously heavy hydrocarbon and oxide can also be avoided to be accumulated in system, prevent chilling tower from blocking.
Description
Technical field
The present invention relates to a kind of chemical separation device, heavy hydrocarbon in more particularly to a kind of MTO technical process, heavy oil and oxygen-enriched
The separator of water.
Background technology
In current methanol-to-olefins (MTO) technique, to the one section of richness of inlet buffer bottom containing heavy hydrocarbon of product air compressor
The heavy-oxygen-enriched water of oxygen water and the separation column oily substance containing multi-methyl benzene, what is taken is to be directly entered oxide stripper to carry out vapour
Processing is proposed, heavy oil is difficult to be effectively addressed by stripper under present technological conditions, cause oxide stripping tower bottom to strip
Water contains substantial amounts of oily substance, and oily substance is constantly accumulated in systems over time, oxide stripper water quality
Constantly deteriorate, directly influence the oxide absorption tower as downstream water stripping user and the stable operation of chilling tower, and then
Have influence on the long-term operation of whole MTO devices.
The content of the invention
It is an object of the invention to provide the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process.It is described
Device sets up heavy oil flash tank recovery section heavy hydrocarbon by changing technological process, sets up oil-water separation system and reclaims oily substance,
Be conducive to improving oxide stripper water quality, it is to avoid heavy hydrocarbon and the long-term accumulation in system of oxide, circulation, be conducive to MTO to fill
The long period even running put.
The purpose of the present invention is realized by following measures：
The separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process, including one section of entrance of product air compressor
Surge tank, it is characterised in that described separator also includes heavy hydrocarbon flash tank and oil water separator；Wherein product gas is compressed
The bottom discharge mouthful of one section of inlet buffer of machine is connected by surge tank discharging pump with the charging aperture of heavy hydrocarbon flash tank, the heavy hydrocarbon
The flash liquid discharging opening of flash tank bottom is connected by heavy hydrocarbon flash tank discharging pump with the charging aperture of oil water separator；
The gas phase discharging opening of the heavy hydrocarbon flash drum overhead is connected to one section of inlet buffer of compressor by reflux line
Product gas import；The oil water separator sets oil phase discharging opening and aqueous phase discharging opening, oil phase discharging opening and C6 products respectively
Storage tank is connected, and aqueous phase discharging opening is connected with oxide stripper.
Gas phase discharging opening at the top of the oil water separator is connected to the production of one section of inlet buffer of compressor by pipeline
Product gas import.
Described one section of inlet buffer of compressor is provided with inlet buffer after setting far transmission level meter, surge tank discharging pump
Fluid level control valve.
The heavy hydrocarbon flash tank sets the liquid level that heavy hydrocarbon flash tank is provided with after far transmission level meter, heavy hydrocarbon flash tank discharging pump
Control valve.
The heavy hydrocarbon flash tank bottom is additionally provided with reboiler.
One is additionally provided with connecting pipe between the charging aperture of the heavy hydrocarbon flash tank discharging pump and oil water separator
Water-cooled heat exchanger；On described connecting pipe, setting a parallel pipeline branch road to be used for before water-cooled heat exchanger will separation
Tower upper water is collaborated into oil water separator.
The one section of heavy-oxygen-enriched water of inlet buffer containing heavy hydrocarbon of MTO products air compressor buffered tank discharging pump under Liquid level
Its part is vaporized into heavy oil flash tank, and by low low-pressure steam (LLPS) heating, the gas phase light component flashed off is again
One section of inlet buffer of product air compressor is returned to reclaim.Liquid phase is changed after being pressurizeed by heavy oil flash tank discharging pump through water-cooled
Enter gun barrel after hot device cooling.After water-oil separating oils product under Liquid level together with the C6 products of OCP units
Deliver to C6 product storage tanks.Aqueous phase containing oxide then sends into oxide stripper under Interface Control and carries out oxide recovery,
Gas phase light component in gun barrel backs within one section of inlet buffer of product air compressor through top outlet pipe and returned
Receive.
Beneficial effect：
The present invention can realize the recycling to heavy hydrocarbon, heavy oil and oxide in MTO technical process, can save money
Source, reduction production cost.The heavy hydrocarbon and heavy-oxygen-enriched water produced to MTO techniques is individually handled, additionally it is possible to avoid heavy hydrocarbon and oxide from existing
Accumulated in system, prevent chilling tower from blocking, be conducive to improving the assimilation effect on oxide absorption tower.
Brief description of the drawings
Fig. 1 is the structural representation of the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process of the invention
Figure；Wherein 1 is one section of inlet buffer of product air compressor, and 2 be surge tank discharging pump, and 3 be fluid level control valve, and 4 be that heavy hydrocarbon dodges
Steaming pot, 5 be reboiler, and 6 be volume control device, and 7 be volume control device, and 8 be heavy hydrocarbon flash tank discharging pump, and 9 be liquid level control
Valve processed, 10 be water-cooled heat exchanger, and 11 be oil water separator, and 13 be pressure control device, and 14 be C6 product storage tanks, and 15 be oxidation
Thing stripper, 16 be knockout tower.
Embodiment
The separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process, including one section of entrance of product air compressor
Surge tank 1, heavy hydrocarbon flash tank 4 and oil water separator 11；The wherein bottom discharge of one section of inlet buffer 1 of product air compressor
Mouth is connected by surge tank discharging pump 2 with the charging aperture of heavy hydrocarbon flash tank 4, in one section of inlet buffer 1 of product air compressor also
A far transmission level meter LIC is provided with, and control signal is passed into the fluid level control valve 3 after surge tank discharging pump 2, to control
Liquid level in one section of inlet buffer 1 of compressor；The flash liquid discharging opening of the bottom of heavy hydrocarbon flash tank 4 passes through heavy hydrocarbon flash tank
Discharging pump 8 is connected with the charging aperture of oil water separator 11；A far transmission level meter LIC is also set up on the heavy hydrocarbon flash tank 4, and
Control signal is passed to the fluid level control valve 9 of the heavy hydrocarbon flash tank 4 set after heavy hydrocarbon flash tank discharging pump 8.The heavy hydrocarbon dodges
The top of steaming pot 4 enters provided with gas return conduit for gaseous component in heavy hydrocarbon flash tank 4 to be back into one section of product air compressor
The outlet pipe that the top of mouth surge tank 1, the gas return conduit and oil water separator 11 is set converges to knockout tower product
Collaborate after the admission line of gas into one section of inlet buffer 1 of product air compressor；The top outlet of the oil water separator 11
A pressure control device 13 is additionally provided with pipeline, the oil water separator sets oil phase discharging opening and aqueous phase to discharge respectively
Mouthful, oil phase discharging opening is connected with C6 product storage tanks 14, and aqueous phase discharging opening is connected with oxide stripper 15.The heavy hydrocarbon flash tank
A reboiler 5 is additionally provided with 4, the reboiler 5 has a low low pressure steam inlet and a low pressure condensate outlet,
And low pressure condensate flow is controlled by volume control device 6.The heavy hydrocarbon flash tank discharging pump 8 enters with oil water separator 11
A water-cooled heat exchanger 10 is additionally provided with connecting pipe between material mouth, one is set before water-cooled heat exchanger 10 simultaneously
Union road branch road is used to collaborate the upper water of knockout tower 16 into oil water separator 11, and flow control is provided with the pipeline branch road
Device 7 processed；The water-cooled heat exchanger 10 is provided with recirculated water water return pipeline and recirculated water water supply pipeline.
In a kind of MTO technical process of the present invention heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water separator work when, from point
Product gas from tower is compressed step by step in four sections of centrifugal compressors with intersegmental cooler and intersegmental surge tank, from
250kpa is compressed to fluid between about 3000kpa, compressor section and cools down and flash in intersegmental cooler and intersegmental surge tank respectively,
So as to remove most of water and heavy hydrocarbon.Intersegmental condensate, including after water and some liquefied hydrocarbons are by intersegmental surge tank
One section of inlet buffer 1 of product air compressor is sent back to, the one section of heavy-oxygen-enriched water of inlet buffer 1 containing heavy hydrocarbon of product air compressor exists
Buffered tank discharging pump 2 enters heavy oil flash tank 4 under Liquid level, and makes its part vapour by low low-pressure steam (LLPS) heating
Change, low pressure lime set is controlled by volume control device 6.The gas phase light component flashed off backs within one section of product air compressor
Inlet buffer 1 is reclaimed.Liquid phase passes through the control after the pressurization of heavy oil flash tank discharging pump 8 in heavy hydrocarbon flash tank fluid level control valve 9
Under water cooled formula heat exchanger 10 cool down after enter gun barrel 11.After water-oil separating oils product under Liquid level with OCP
The C6 products of unit deliver to C6 product storage tanks 14 together.Aqueous phase containing oxide then sends into oxide stripping under Interface Control
The gas phase light component that tower 15 is carried out in oxide recovery, gun barrel 11 backs within product air pressure through top outlet pipe
One section of inlet buffer 1 of contracting machine is reclaimed.
Claims (7)
1. the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process, including one section of entrance of product air compressor are slow
Rush tank (1), it is characterised in that described separator also includes heavy hydrocarbon flash tank (4) and oil water separator (11)；Wherein produce
The bottom discharge of one section of inlet buffer (1) of product air compressor mouthful is entered by surge tank discharging pump (2) and heavy hydrocarbon flash tank (4)
Material mouth is connected, and the flash liquid discharging opening of heavy hydrocarbon flash tank (4) bottom passes through heavy hydrocarbon flash tank discharging pump (8) and water-oil separating
The charging aperture of device (11) is connected；Gas phase discharging opening at the top of the heavy hydrocarbon flash tank (4) is connected to compressor by reflux line
The product gas import of one section of inlet buffer (1)；The oil water separator (11) sets oil phase discharging opening and aqueous phase to discharge respectively
Mouthful, oil phase discharging opening is connected with C6 product storage tanks (14), and aqueous phase discharging opening is connected with oxide stripper (15).
2. the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water, its feature in a kind of MTO technical process according to claim 1
It is, the gas phase discharging opening at the top of the oil water separator (11) is connected to one section of inlet buffer (1) of compressor by pipeline
Product gas import.
3. the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water, its feature in a kind of MTO technical process according to claim 1
It is, heavy hydrocarbon flash tank (4) bottom is additionally provided with reboiler (5).
4. the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water, its feature in a kind of MTO technical process according to claim 1
It is, is additionally provided with the connecting pipe between the heavy hydrocarbon flash tank discharging pump (8) and the charging aperture of oil water separator (11)
Water-cooled heat exchanger (10).
5. the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water, its feature in a kind of MTO technical process according to claim 4
It is, on described connecting pipe, sets a parallel pipeline branch road to be used for knockout tower before water-cooled heat exchanger (10)
(16) upper water is collaborated into oil water separator (11).
6. the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water, its feature in a kind of MTO technical process according to claim 1
It is, far transmission level meter is set on described one section of inlet buffer (1) of compressor, surge tank discharging pump is provided with compression after (2)
The fluid level control valve (3) of one section of inlet buffer (1) of machine.
7. the separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water, its feature in a kind of MTO technical process according to claim 1
It is, heavy hydrocarbon flash tank is provided with after far transmission level meter, heavy hydrocarbon flash tank discharging pump (8) are set on the heavy hydrocarbon flash tank (4)
(4) fluid level control valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027528.9A CN105419861B (en) | 2015-12-31 | 2015-12-31 | The separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027528.9A CN105419861B (en) | 2015-12-31 | 2015-12-31 | The separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105419861A CN105419861A (en) | 2016-03-23 |
| CN105419861B true CN105419861B (en) | 2017-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511027528.9A Active CN105419861B (en) | 2015-12-31 | 2015-12-31 | The separator of heavy hydrocarbon, heavy oil and heavy-oxygen-enriched water in a kind of MTO technical process |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3923644A (en) * | 1974-10-11 | 1975-12-02 | Petrocon Corp | Process and apparatus for re-refining used petroleum products |
| US4430202A (en) * | 1982-03-05 | 1984-02-07 | Bloess J J | Distillate oil moisture dehazing process |
| CN102060403B (en) * | 2009-11-17 | 2012-09-26 | 中国石油化工集团公司 | Sewage treatment process capable of recovering low-carbon hydrocarbons and low-carbon oxygen-containing organic matters |
| CN102060347B (en) * | 2009-11-17 | 2012-03-28 | 中国石油化工集团公司 | Sewage treatment process for recycling low-carbon hydrocarbons and low-carbon oxygen-containing organic matters |
| CN103833171B (en) * | 2013-12-05 | 2015-07-08 | 湖北华邦化学有限公司 | Method for treating ultrahigh-concentration organic waste water produced by preparation of olefin from methanol |
| CN205295238U (en) * | 2015-12-31 | 2016-06-08 | 惠生（南京）清洁能源股份有限公司 | Heavy hydrocarbon , heavy oil and heavy -oxygen -enriched water's separator among MTO process |
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| CN105419861A (en) | 2016-03-23 |
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Address after: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Applicant after: NANJING CHENGZHI CLEAN ENERGY Co.,Ltd. Address before: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Applicant before: Nanjing Zhicheng clean energy Limited by Share Ltd. Address after: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Applicant after: Nanjing Zhicheng clean energy Limited by Share Ltd. Address before: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Applicant before: WISON (NANJING) CLEAN ENERGY CO.,LTD. |
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