CN203564878U - Improved coking-prevention settler - Google Patents
Improved coking-prevention settler Download PDFInfo
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- CN203564878U CN203564878U CN201320634021.XU CN201320634021U CN203564878U CN 203564878 U CN203564878 U CN 203564878U CN 201320634021 U CN201320634021 U CN 201320634021U CN 203564878 U CN203564878 U CN 203564878U
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- settler
- pipe
- coking
- prevention
- scorch
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Abstract
The utility model discloses an improved coking-prevention settler, and belongs to the technical field of petrochemical equipment for solving the problem of coking of a catalytic cracking unit settler. The improved coking-prevention settler comprises a settler, a lifting pipe, crude cyclones, top cyclones and a coke-prevention steam pipe. The improved coking-prevention settler is characterized in that crude cyclone gas-exhaust pipes and inlets of the top cyclones are connected in an airtight mode; the upper ends of gas guide pipes are connected with inlet pipes of the top cyclones or the crude cyclone gas-exhaust pipes, and the lower ends of the gas guide pipes extend to the lower part of the settler, and are connected with Y-tubes or multi-inlet structure pipes; the top of the settler is provided with annular or multi-pipe-type coking-prevention steam distribution pipes; the lower part of the settler is provided with a separation plate. By the device, a steam separation region can be formed on the top of the settler to prevent the coking of the settler, and the gas flow speed at the inlets in the lower ends of the gas guide pipes is uniform so as to reduce catalyst entrainment. The improved coking-prevention settler is applied to devices for heavy oil catalysis cracking and catalysis pyrolysis and the like.
Description
Technical field
The utility model belongs to petrochemical equipment technical field, particularly a kind of improvement anti-coking settler.
Background technology
Refinery catalytic cracking unit's reactor comprises that riser, gas-solid quick disconnector, top are revolved, settler, stripping section, collection chamber, anti-scorch steam loop etc.Early stage gas-solid quick disconnector has umbrella crown, fall L, T-shaped structural shape, separative efficiency is generally 70%～80%, oil gas after separation rises at a slow speed in the larger settler of diameter, then enters the single stage cyclone separator (being called for short top revolves) on settler top.Part oil gas more than 30 seconds, at high temperature still exists the reaction such as thermal cracking, condensation to affect yield of light oil in the settler time of staying, when processing heavy oil even in settler coking.Some device riser reactor outlets arrange 2 and slightly revolve, efficiency can reach more than 95%, but thick spin material leg is to discharge catalyst under positive differential pressure, discharge 20%～30% oil gas simultaneously, revolve on this part oil gas top enter settler top of rising at a slow speed in settler together with stripping gas, this part oil gas the settler time of staying length can cause settler coking; The device having in the recent period will slightly revolve blast pipe and extend up near the screw-in mouth of top, but the oil gas time of staying that thick spin material leg is discharged is longer.
For reducing oil gas in the settler time of staying, patent ZL200420037425.1 leg outlet adopts and slightly revolves fast minute, to slightly revolve blast pipe and screw in mouthful airtight a connection with top, wireway is set the oil gas of settler bottom (thick spin material leg discharge oil gas, stripping gas, anti-scorch steam gas) is guided to push up and revolves population, reduce the oil gas time of staying.This scheme can reduce thermal cracking and coking tendency to a certain extent, still has following problem: 1, at settler, do not form complete steam seal isolated area, therefore settler still has coking problem; 2, because thick spin material leg is discharged oil gas and catalyst, settler bottom exists catalyst " to splash ", and porch, wireway lower end gas flow rate high catalyst is easily increased by the band catalyst attrition amount of sening as an envoy to.
Summary of the invention
The purpose of this utility model is that existing equipment is improved, a kind of improvement anti-coking settler is provided, at settler, forms complete steam isolated area, thoroughly solve settler coking problem, and porch, wireway lower end gas flow rate is even, reduces catalyst taking-out amount and reduce catalyst attrition.
The utility model solves the technical scheme that its technical problem adopts: comprise settler, riser, slightly revolve, push up revolve, anti-scorch steam pipe, it is characterized in that: slightly revolve blast pipe and screw in mouthful airtight a connection of employing with top, its upper end of wireway is set and revolves inlet tube or slightly revolve blast pipe with top and be connected, its lower end reaches settler bottom and is connected with pants pipe or many makeups of the imports pipe; Ring-like or the anti-scorch distribution of steam pipe of multi-pipe type is set at settler top, in settler bottom, division board is set.
Further, it is identical or not identical that number of units is revolved on wireway radical top, and the pants pipe that its lower end connects or many makeups of the imports pipe air inlet reach division board below.
Further, division board and settler inwall, wireway, thick spin material leg, top spin material leg leave 5～50mm gap.
Further, ring-like anti-scorch distribution of steam pipe is formed or is comprised of multistage curved pipe by 1～8 ring pipe; The anti-scorch distribution of steam pipe of multi-pipe type is 1～4 group of multitube distributor pipe, and every group comprises 1～4 supervisor, some arms, and supervisor and arm are straight tube or curved pipe; Anti-scorch distribution of steam pipe is offered some diameter 2～20mm circular holes or the long 20～200mm seam of wide 2～20mm hole upward.
The utility model innovative point is: slightly revolve blast pipe and top and screw in and mouthful to adopt airtight a connection, its upper end of wireway is set and revolves inlet tube or slightly revolve blast pipe with top and be connected, its lower end reaches settler bottom and is connected with pants pipe or many makeups of the imports pipe; Ring-like or the anti-scorch distribution of steam pipe of multi-pipe type is set at settler top, in settler bottom, division board is set.
The utility model good effect is: on settler top, form complete steam isolated area, thoroughly solve settler top coking problem; Wireway lower end reaches the division board below of settler bottom and is connected with pants pipe, and air inlet quantity increases by 1 times and more even in settler cross-sectional distribution, and porch gas flow rate is even, reduces catalyst entrainment and reduces catalyst attrition.
Accompanying drawing explanation
Fig. 1 is a kind of improvement anti-coking settler schematic diagram.
1-oil gas vent, 2-collection chamber, the anti-scorch distribution of steam pipe of 3-, 4-revolves on top, 5-wireway, 6-slightly revolves blast pipe, and 7-slightly revolves, 8-back taper, 9-pants pipe, the anti-scorch steam inlet of 10-, 11-settler, 12-riser, 13-division board, 14-stripping section.
Fig. 2 A and Fig. 2 B are a kind of improvement anti-coking settler top views.
4-revolves on top, 5-wireway, and 7-slightly revolves, 9-pants pipe, 11-settler, 12-riser.
Fig. 3 is the another kind of anti-coking settler schematic diagram that improves.
1-oil gas vent, 2-collection chamber, the anti-scorch distribution of steam pipe of 3-, 4-revolves on top, 5-wireway, 6-slightly revolves blast pipe, and 7-slightly revolves, 8-back taper, 9-pants pipe, the anti-scorch steam inlet of 10-, 11-settler, 12-riser, 13-division board, 14-stripping section.
Fig. 4 is the another kind of anti-coking settler top view that improves.
4-revolves on top, 5-wireway, and 7-slightly revolves, 9-pants pipe, 11-settler, 12-riser.
The specific embodiment
See Fig. 1～Fig. 4, oil gas vent 1, collection chamber 2, anti-scorch steam inlet 10, anti-scorch distribution of steam pipe 3 are arranged at settler 11 tops, and division board 13 is arranged at bottom, middle part have slightly revolve 7 and top revolve 4.Slightly revolve 12 outlets of 7 entrances and riser and be connected, slightly revolve blast pipe 6 and revolve with top that 4 entrances are airtight to be connected; Slightly revolve 7 dipleg lower ends, top is revolved 4 dipleg lower ends and is reached division board 13 belows.Wireway 5 upper ends with slightly revolve blast pipe 6 and be connected, lower end reaches division board 13 belows and is connected with pants pipe 9.Fig. 1 promotes cast settler in block form, and riser 12 enters settler 11 and slightly revolves 7 entrances and be connected through stripping section 14; Fig. 3 is that coaxial-type promotes cast settler outward, and riser 12 directly enters from the side settler 11 and slightly revolves 7 entrances and be connected.
Referring to Fig. 1～Fig. 4, reaction oil gas and catalyst mixture flow out to enter from riser 12 outlets and slightly revolve 7, gas-solid mixture is done high speed rotary motion slightly revolving in 7, under centrifugal action, oil gas is separated fast with catalyst, primary separation oil gas from slightly revolve blast pipe 6 discharge and introduce top revolve 4, the purification oil gas revolving after 4 further centrifugations through top enters collection chamber 2, finally from oil gas vent 1, discharges.Separate fast catalyst and part oil gas and discharge from slightly revolving 7 bottoms, catalyst falls into the stripping section 14 of below.At anti-scorch steam inlet 10, feed anti-scorch steam, through anti-scorch distribution of steam pipe 3, anti-scorch steam is even in settler cross-sectional distribution, be full of settler space and form seal isolation district, then through slit flow to division board 13 belows, discharge oil gas, stripping gas with top rotor valve and slightly revolve 7 bottoms and discharge together with oil gas and through pants pipe 9, to enter wireway 5 and be guided to top and revolve 4 entrances.
Claims (4)
1. one kind is improved anti-coking settler, comprise settler, riser, slightly revolve, push up revolve, anti-scorch steam pipe, it is characterized in that: slightly revolve blast pipe and screw in mouthful airtight a connection of employing with top, its upper end of wireway is set and revolves inlet tube or slightly revolve blast pipe with top and be connected, its lower end reaches settler bottom and is connected with pants pipe or many makeups of the imports pipe; Ring-like or the anti-scorch distribution of steam pipe of multi-pipe type is set at settler top, in settler bottom, division board is set.
2. improvement anti-coking settler according to claim 1, is characterized in that: it is identical or not identical that number of units is revolved on wireway radical top, and the pants pipe that its lower end connects or many makeups of the imports pipe air inlet reach division board below.
3. improvement anti-coking settler according to claim 1, is characterized in that: division board and settler inwall, wireway, thick spin material leg, top spin material leg leave 5～50mm gap.
4. improvement anti-coking settler according to claim 1, is characterized in that: ring-like anti-scorch distribution of steam pipe is formed or is comprised of multistage curved pipe by 1～8 ring pipe; The anti-scorch distribution of steam pipe of multi-pipe type is 1～4 group of multitube distributor pipe, and every group comprises 1～4 supervisor, some arms, and supervisor and arm are straight tube or curved pipe; Anti-scorch distribution of steam pipe is offered some diameter 2～20mm circular holes or the long 20～200mm seam of wide 2～20mm hole upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634021.XU CN203564878U (en) | 2013-10-14 | 2013-10-14 | Improved coking-prevention settler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634021.XU CN203564878U (en) | 2013-10-14 | 2013-10-14 | Improved coking-prevention settler |
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| Publication Number | Publication Date |
|---|---|
| CN203564878U true CN203564878U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320634021.XU Expired - Fee Related CN203564878U (en) | 2013-10-14 | 2013-10-14 | Improved coking-prevention settler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388113A (en) * | 2014-11-04 | 2015-03-04 | 中国石油化工股份有限公司 | Anti-coking steam circular pipe capable of reducing coking of catalytic cracking settler |
| CN108237024A (en) * | 2017-12-28 | 2018-07-03 | 陕西延长石油（集团）有限责任公司 | A kind of two stage cyclone separator |
| CN113828067A (en) * | 2021-10-25 | 2021-12-24 | 中国石油大学(北京) | Gas-solid separation device capable of slowing down coking and separation method thereof |
| CN116850914A (en) * | 2023-09-04 | 2023-10-10 | 江苏博颂能源科技有限公司 | Propane dehydrogenation device reactor roof prevents burnt steam ring |
-
2013
- 2013-10-14 CN CN201320634021.XU patent/CN203564878U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388113A (en) * | 2014-11-04 | 2015-03-04 | 中国石油化工股份有限公司 | Anti-coking steam circular pipe capable of reducing coking of catalytic cracking settler |
| CN104388113B (en) * | 2014-11-04 | 2016-07-06 | 中国石油化工股份有限公司青岛安全工程研究院 | Reduce the anti-scorch steam loop of Coking In The Settler of Fcc Unit |
| CN108237024A (en) * | 2017-12-28 | 2018-07-03 | 陕西延长石油（集团）有限责任公司 | A kind of two stage cyclone separator |
| CN113828067A (en) * | 2021-10-25 | 2021-12-24 | 中国石油大学(北京) | Gas-solid separation device capable of slowing down coking and separation method thereof |
| CN116850914A (en) * | 2023-09-04 | 2023-10-10 | 江苏博颂能源科技有限公司 | Propane dehydrogenation device reactor roof prevents burnt steam ring |
| CN116850914B (en) * | 2023-09-04 | 2023-12-05 | 江苏博颂能源科技有限公司 | Propane dehydrogenation device reactor roof prevents burnt steam ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 100070 Beijing Fengtai District Fangfei Road 88 Courtyard Building 2 Unit 202 Patentee after: Liu Yingju Address before: 100011 A0406-25, 4th Floor, Royal City International A Block, 136 Andingmenwai Street, Dongcheng District, Beijing Patentee before: Liu Yingju |
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| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20191014 |
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| CF01 | Termination of patent right due to non-payment of annual fee |