CN204342742U - The device of heavy petrol in splitting gas is reclaimed in a kind of MTO olefin cracking device - Google Patents
The device of heavy petrol in splitting gas is reclaimed in a kind of MTO olefin cracking device Download PDFInfo
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- CN204342742U CN204342742U CN201420858761.6U CN201420858761U CN204342742U CN 204342742 U CN204342742 U CN 204342742U CN 201420858761 U CN201420858761 U CN 201420858761U CN 204342742 U CN204342742 U CN 204342742U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/40—Ethylene production
Abstract
The utility model discloses the device reclaiming heavy petrol in splitting gas in a kind of MTO olefin cracking device, comprise splitting gas one section of separating tank, cracking gas compressor Drainage tank, cracking gas compressor and recycle column, splitting gas one section of separating tank top gas phase material outlet connects recycle column by cracking gas compressor; Splitting gas one section of separating tank outlet at bottom connects cracking gas compressor Drainage tank, it is characterized in that, bottom described cracking gas compressor Drainage tank, at least one volume pump is set, described volume pump connects two pipelines in parallel, first connecting tube connects recycle column tower reactor, is delivered to C6+ tank field after the second connecting tube and recycle column tower reactor discharge nozzle merge.Heavy petrol in the sepn process of splitting gas can reclaim by device of the present utility model, avoids product loss, reduces burning and the C discharge of correlative simultaneously.
Description
Technical field
The utility model belongs to methanol-to-olefins (MTO) technical field, relates to olefin cracking device, is specifically related to a kind of device for reclaiming heavy petrol in splitting gas in MTO olefin cracking device.
Background technology
The OCP technique of the company of ATOFINA/UOP is one of main method of low-carbon alkene cracking alkene in the world at present, can combine with MTO device.
Olefin cracking device with the heavy alkene product of the C4-C8 of methanol-to-olefins (MTO) device and olefin separation for raw material, the Light olefin products that to produce with ethene, propylene be target components.
Raw material is first carried out selective hydrogenation process by hydrogenator by olefin cracking device, diolefine in raw material and alkynes are saturated to monoolefine, avoid a large amount of diolefine and alkynes to be polymerized in the cracking reactor and pipeline of high temperature and produce coke, affect the normal operation of device; Material after hydrogenation, after being progressively warming up to the temperature of reaction of scission reaction, enters cracking reactor, carries out scission reaction; Ethene, propylene is the target product in split product; Enter cracking gas compressor after the product gas of high temperature progressively cools, then enter the fractionating system of product, each component in product is separated.
According to existing technological design scheme, the import and export of splitting gas one section of separating tank are gas phase media, without liquid phase condensate, but in the actually operating of olefin cracking device, heavy petrol (about 200Kg/h) in splitting gas can get off in condensation, and the heavy petrol be condensed flows to cracking gas compressor Drainage tank, and the heavy constituent of wherein collecting will be disposed to flare system and burn, not only cause the waste of material, also cause larger pressure to environment protection emission simultaneously.
Summary of the invention
The purpose of this utility model is to provide the device reclaiming heavy petrol in splitting gas in a kind of MTO olefin cracking device, by improving relevant device in original device, to the heavy petrol that improving technique and operation reclaim in splitting gas, avoid product loss, reduce burning and the C discharge of correlative simultaneously.
For achieving the above object, the technical scheme that adopts of the utility model is as follows:
The device of heavy petrol in splitting gas is reclaimed in a kind of MTO olefin cracking device, comprise splitting gas one section of separating tank, cracking gas compressor Drainage tank, cracking gas compressor and recycle column, splitting gas one section of separating tank top gas phase material outlet connects recycle column by cracking gas compressor; Splitting gas one section of separating tank outlet at bottom connects cracking gas compressor Drainage tank, it is characterized in that, bottom described cracking gas compressor Drainage tank, at least one volume pump is set, described volume pump connects two pipelines in parallel, first connecting tube connects recycle column tower reactor, is delivered to C6+ tank field after the second connecting tube and recycle column tower reactor discharge nozzle merge.
Device of the present utility model, the heavy petrol of cracking gas compressor Drainage tank can be reclaimed increase volume pump bottom cracking gas compressor Drainage tank after, the heavy petrol reclaimed delivers to C6+ tank field together with recycle column tower reactor discharging in device, or the heavy petrol of recovery is sent back in recycle column tower reactor, to adjust recycle column operating mode.
Described splitting gas one section of separating tank top gas phase material outlet connects cracking gas compressor suction opening, and cracking gas compressor venting port connects recycle column opening for feed.
First, second described connecting tube arranges valve respectively.
The MDP of described volume pump is greater than 1MPa.
Preferably, described volume pump is 2 volume pumps in parallel.
Compared to prior art, the beneficial effects of the utility model are:
1, reclaim the device of heavy petrol in splitting gas in MTO olefin cracking device of the present utility model, increase by two volume pumps at cracking gas compressor Drainage tank, the heavy gasoline components in splitting gas is reclaimed; By the heavy petrol that improving technique and operation are reclaimed in splitting gas, avoid product loss, reduce burning and the C discharge of correlative simultaneously.
2, adopt device of the present utility model, in the sepn process of splitting gas, the heavy petrol of recovery can be delivered to C6+ tank field together with the discharging of recycle column tower reactor under nominal situation and take out as product; When recycle column tower reactor liquid level is too low, the heavy petrol of recovery can be sent back in recycle column tower reactor, and rapid adjustment tower operating mode is to standard state.When there being light constituent in the heavy petrol reclaimed, also can delivering to recycle column tower reactor and being separated further, increase the economic benefit of product.
Below in conjunction with specific embodiment, the utility model is described in detail.Protection domain of the present utility model is not limited with embodiment, but is limited by claim.
Accompanying drawing explanation
Fig. 1 is the schematic diagram reclaiming the device of heavy petrol in splitting gas in MTO olefin cracking device of the present utility model;
Wherein, 1, splitting gas water cooler, 2, splitting gas one section of separating tank, 3, cracking gas compressor, 4, recycle column, 5, cracking gas compressor Drainage tank, 6, volume pump, the 7, first connecting tube, the 8, second connecting tube, 9, C6+ tank field, 10, recycle column tower reactor discharging pump, 11, sump tank, 12, torch tank, 13, valve, 14, valve.
Embodiment
Below by specific embodiment, technical scheme described in the utility model is further described in detail, but is necessary to point out that following examples are only for the description to utility model content, do not form the restriction to the utility model protection domain.
As Fig. 1, in MTO olefin cracking device, splitting gas separating device mainly comprises splitting gas water cooler 1, splitting gas one section of separating tank 2, cracking gas compressor 3 and recycle column 4, splitting gas one section of separating tank 2 top gas phase material outlet connects cracking gas compressor 3 suction opening, and cracking gas compressor 3 venting port connects recycle column 4 opening for feed; Splitting gas one section of separating tank 2 outlet at bottom connects cracking gas compressor Drainage tank 5, and cracking gas compressor Drainage tank 5 connects torch tank 12 through sump tank 11.
From cracking reactor outlet splitting gas through splitting gas water cooler 1 cool after, enter splitting gas one section of separating tank 2 and carry out gas-liquid separation, gaseous phase materials enters from top exit the compression that cracking gas compressor 3 carries out gas, high-temperature gas after compression delivers to the separation that recycle column 4 carries out weight component, recycle column tower reactor discharging pump 10 by be separated after heavy constituent by Cemented filling to C6+ tank field 9, recycle column 4 top gaseous phase light constituent further separates process.
According to the device reclaiming heavy petrol in splitting gas in olefin cracking device of the present utility model, the volume pump 6 that increase by two is in parallel bottom cracking gas compressor Drainage tank 5, described volume pump 6 connects two pipelines 7,8 in parallel, first connecting tube 7 connects recycle column 4 tower reactor, be delivered to C6+ tank field 9 after second connecting tube 8 merges with recycle column 4 tower reactor discharge nozzle, connecting tube 7,8 arranged respectively valve 13,14.
Adopt said apparatus, the heavy petrol of cracking gas compressor Drainage tank 5 can be reclaimed, together with after the heavy petrol of recovery merges with the discharging of recycle column in device 4 tower reactor, deliver to C6+ tank field 9.
In the sepn process of splitting gas, the heavy petrol of recovery can be delivered to C6+ tank field together with the discharging of recycle column 4 tower reactor under nominal situation and take out as product; When recycle column 4 tower reactor liquid level is too low, switched by valve 13,14, the heavy petrol of recovery can be sent back in recycle column 4 tower reactor, and rapid adjustment recycle column 4 operating mode is to standard state.When there being light constituent in the heavy petrol reclaimed, also can delivering to recycle column 4 tower reactor and being separated further, increase the economic benefit of product.
In the type selecting of volume pump 6, ensure that the MDP of pump is greater than 1MPa (recycle column tower reactor discharging pump 10 top hole pressure about 1.0MPa), rated flow 1t/h ~ 2t/h.
For 300,000 tons of supporting olefin cracking devices of MTO, adopt said apparatus can realize the heavy petrol of recovery 1600 tons the whole year, substantially increase economic benefit; If these heavy petrol burn as waste oil, about produce 1500 tons of CO
2, thus greatly reduce environmental protection pressure.
Claims (5)
1. in a MTO olefin cracking device, reclaim the device of heavy petrol in splitting gas, comprise splitting gas one section of separating tank (2), cracking gas compressor Drainage tank (5), cracking gas compressor (3) and recycle column (4), splitting gas one section of separating tank (2) top gas phase material outlet connects recycle column (4) by cracking gas compressor (3); Splitting gas one section of separating tank (2) outlet at bottom connects cracking gas compressor Drainage tank (5), it is characterized in that, described cracking gas compressor Drainage tank (5) bottom arranges at least one volume pump (6), described volume pump (6) connects two pipelines in parallel, first connecting tube (7) connects recycle column (4) tower reactor, is delivered to C6+ tank field (9) after the second connecting tube (8) and recycle column (4) tower reactor discharge nozzle merge.
2. the device of heavy petrol in recovery splitting gas according to claim 1, it is characterized in that, described splitting gas one section of separating tank (2) top gas phase material outlet connects cracking gas compressor (3) suction opening, and cracking gas compressor (3) venting port connects recycle column (4) opening for feed.
3. the device of heavy petrol in recovery splitting gas according to claim 1, is characterized in that, described first, second connecting tube (7,8) arranges valve (13,14) respectively.
4. the device of heavy petrol in recovery splitting gas according to claim 1, it is characterized in that, the MDP of described volume pump (6) is greater than 1MPa.
5. the device of heavy petrol in recovery splitting gas according to claim 1, is characterized in that, described volume pump (6) is 2 volume pumps in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858761.6U CN204342742U (en) | 2014-12-30 | 2014-12-30 | The device of heavy petrol in splitting gas is reclaimed in a kind of MTO olefin cracking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858761.6U CN204342742U (en) | 2014-12-30 | 2014-12-30 | The device of heavy petrol in splitting gas is reclaimed in a kind of MTO olefin cracking device |
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| CN204342742U true CN204342742U (en) | 2015-05-20 |
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| CN201420858761.6U Active CN204342742U (en) | 2014-12-30 | 2014-12-30 | The device of heavy petrol in splitting gas is reclaimed in a kind of MTO olefin cracking device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759429A (en) * | 2019-01-29 | 2019-05-17 | 湖南新九方科技有限公司 | A kind of Soil leaching drying unit suitable for heavy-metal contaminated soil reparation |
| CN109759428A (en) * | 2019-01-29 | 2019-05-17 | 湖南新九方科技有限公司 | A kind of Soil leaching machine suitable for heavy-metal contaminated soil reparation |
-
2014
- 2014-12-30 CN CN201420858761.6U patent/CN204342742U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759429A (en) * | 2019-01-29 | 2019-05-17 | 湖南新九方科技有限公司 | A kind of Soil leaching drying unit suitable for heavy-metal contaminated soil reparation |
| CN109759428A (en) * | 2019-01-29 | 2019-05-17 | 湖南新九方科技有限公司 | A kind of Soil leaching machine suitable for heavy-metal contaminated soil reparation |
| CN109759428B (en) * | 2019-01-29 | 2022-02-18 | 湖南新九方科技有限公司 | Soil leaching machine suitable for heavy metal contaminated soil remediation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Address after: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee after: NANJING CHENGZHI CLEAN ENERGY Co.,Ltd. Address before: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee before: Nanjing Zhicheng clean energy Limited by Share Ltd. Address after: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee after: Nanjing Zhicheng clean energy Limited by Share Ltd. Address before: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee before: WISON (NANJING) CLEAN ENERGY CO.,LTD. |