CN204815741U - Rectification economizer - Google Patents
Rectification economizer Download PDFInfo
- Publication number
- CN204815741U CN204815741U CN201520540669.XU CN201520540669U CN204815741U CN 204815741 U CN204815741 U CN 204815741U CN 201520540669 U CN201520540669 U CN 201520540669U CN 204815741 U CN204815741 U CN 204815741U
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- CN
- China
- Prior art keywords
- reboiler
- rectifying column
- flow liquid
- compressor
- pipeline
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- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 230000008676 import Effects 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000004821 distillation Methods 0.000 abstract description 6
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 2
- 210000003437 trachea Anatomy 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- JMNDBSWHIXOJLR-UHFFFAOYSA-N ethylbenzene;styrene Chemical compound CCC1=CC=CC=C1.C=CC1=CC=CC=C1 JMNDBSWHIXOJLR-UHFFFAOYSA-N 0.000 description 1
Abstract
Rectification economizer, the tower bottoms discharge gate of rectifying column and a shunt link to each other, two exports of shunt respectively with product extraction pipeline with divide flow liquid pipeline connection, divide the import of flow liquid pipeline and reboiler to link to each other, set up a choke valve on dividing the flow liquid pipeline, the reboiler export links to each other through reboiling trachea line and a compressor, the compressor export communicates with each other through backward flow trachea line and rectifying column. The utility model discloses to partial tower bottoms pass through the throttling expansion, to add the thermosetting saturation through the low -grade heat source of reboiler more gaseous, sends back to to the rectifying column in via the compressor compression at last, makes the distillation process total energy consumption reduce, the heat source down grading, full tower thermodynamic efficiency improves, greatly reduced the operating cost.
Description
Technical field
The utility model relates to Finestill energy-saving technical field, is specifically related to a kind of Finestill energy-saving apparatus.
Background technology
Energy problem has become one of global major issue, various countries are all devoted to tap a new source of energy and power-saving technology, in industrial energy consumption, chemical industry proportion is very large, rectifying column is one of most popular separative element of petroleum chemical industry, the feature that distillation process high energy consumption, thermodynamic efficiency are low, makes this process be the important topic that chemical field is studied.The energy consumption of distillation process can account for 1/3rd of chemical plant total energy consumption, even over half, the design of rectifying column and auxiliary device thereof is directly connected to the height of energy consumption and effective utilization of public work, the energy consumption of distillation process reduces, will produce important impact to whole petroleum chemical industry, its economic implications and development prospect are all very great.
Conventional rectifying column comprises tower main body, condenser and reboiler, introduce the heat of rectifying column reboiler by being discharged by condenser after rectifying column, for ensureing heat transfer temperature difference and heat supply, reboiler must use high-grade thermal source, and heat exchange area is relatively large, cause distillation process operating cost higher.
Utility model content
The utility model provides a kind of Finestill energy-saving apparatus, and the rectifying reboiler existed to solve prior art need use high-grade thermal source and the high problem of operating cost.
Finestill energy-saving apparatus of the present utility model comprises rectifying column, condenser and reboiler, solving technical scheme that its technical problem adopts is that the tower bottoms discharging opening of rectifying column is connected with a current divider, two outlets of current divider are connected with product extraction pipeline and a point flow liquid pipeline respectively, flow liquid pipeline is divided to be connected with reboiler import, divide on flow liquid pipeline and a choke valve is set, reboiler outlet is connected with a compressor by the gas pipeline that boils again, and compressor outlet is communicated with rectifying column by backflow gas pipeline.
The energy saving technique of above-mentioned Finestill energy-saving apparatus, pass through contraction principle, rectifying column reboiler heat exchange area is reduced, thermal source grade reduces, reduce operating cost, concrete technology step is that rectifying tower bottoms is discharged by tower bottoms discharging opening, pass in current divider, shunting is completed in current divider, the split ratio of current divider is equal with the reflux ratio of rectifying column, part tower bottoms is discharged by product extraction pipeline as product, residue tower bottoms carries out throttling expansion by a point flow liquid pipeline by choke valve as phegma, make shunting liquid temp, pressure reduces, heat exchange is completed in reboiler, because shunting liquid temp and pressure reduce, reboiler thermal source used can adopt low-grade heat source, and required heat exchange amount reduces, therefore heat exchange area reduces, hot logistics carries out countercurrent flow through hot logistics feeding line and phegma, phegma is boiled again and forms the saturated gas that boils again, low-grade heat source is discharged by hot logistics discharging pipeline, the gas that boils again passes into compressor by the gas pipeline that boils again and compresses, backflow gas after compression passes in rectifying column via backflow gas pipeline.
Backflow gas temperature and pressure after above-mentioned compression should be identical with the temperature and pressure of tower bottom of rectifying tower liquid.
Backflow pneumatic transmission after above-mentioned compression is on the column plate bottom of rectifying column.
The utility model to part tower bottoms by throttling expansion, add thermosetting saturated gas through the low-grade heat source of reboiler again, return in rectifying column finally by by compressor compresses, distillation process total energy consumption is reduced, thermal source grade reduces, full tower thermodynamic efficiency improves, and greatly reduces operating cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the process flow diagram of the utility model device.
1 current divider in figure, 2 choke valves, 3 reboilers, 4 compressors, 5 tower bottoms discharging openings, 6 product extraction pipelines, 7 points of flow liquid pipelines, 8 hot logistics feeding lines, 9 hot logistics discharging pipelines, 10 boil gas pipeline, 11 backflow gas pipeline, 12 rectifying columns, 13 condensers again.
Detailed description of the invention
As shown in the figure, a kind of Finestill energy-saving apparatus, comprise rectifying column 12, condenser 13 and reboiler 3, the tower bottoms discharging opening 5 of rectifying column 12 is connected with current divider 1, two outlets of current divider 1 are connected with product extraction pipeline 6 and a point flow liquid pipeline 7 respectively, and a point flow liquid pipeline 7 is connected with reboiler 3 import, and point flow liquid pipeline 7 arranges choke valve 2, reboiler 3 is exported and is connected with compressor 4 by the gas pipeline 10 that boils again, and compressor 4 is exported and communicated with rectifying column 12 by backflow gas pipeline 11.
The energy saving technique of above-mentioned Finestill energy-saving apparatus, pass through contraction principle, rectifying column reboiler heat exchange area is reduced, thermal source grade reduces, reduce operating cost, concrete technology step is that rectifying column 12 still liquid is discharged by tower bottoms discharging opening 5, pass in current divider 1, shunting is completed in current divider 1, the split ratio of current divider 1 is equal with the reflux ratio of rectifying column 12, part tower bottoms is discharged by product extraction pipeline 6 as product, residue tower bottoms carries out throttling expansion by a point flow liquid pipeline 7 by choke valve 2 as phegma, shunting liquid temp and pressure are reduced, heat exchange is completed in reboiler 3, because shunting liquid temp and pressure reduce, reboiler 3 thermal source used can adopt low-grade heat source, and required heat exchange amount reduces, therefore heat exchange area reduces, hot logistics carries out countercurrent flow through hot logistics feeding line 8 with phegma, phegma is boiled again and forms the saturated gas that boils again, low-grade heat source is discharged by hot logistics discharging pipeline 9, the gas that boils again passes into compressor 4 by the gas pipeline 10 that boils again and compresses, backflow gas after compression passes in rectifying column 12 via backflow gas pipeline 11, backflow gas temperature and pressure after compression should be identical with the temperature and pressure of tower bottom of rectifying tower liquid, backflow pneumatic transmission after compression is on the column plate bottom of rectifying column 12.
For Hebei enterprise ethylbenzene-styrene rectifying column, conventional rectification tower Central Plains feed liquid inlet amount is 12500kg/h, temperature is 45 DEG C, pressure is 101.325Kpa, overhead condenser pressure is 6kpa, and reboiler pressure is 14kpa, and reflux ratio is set as 5.2, tower bottoms temperature is 83 DEG C, and the reboiler heat duty of conventional rectification tower is 4825kw.Adopt the rectification energy-saving new process proposed.Inlet amount is still 12500kg/h, and temperature is 45 DEG C, and pressure is 101.325Kpa.Throttle valve opening 30%.After throttling expansion, phegma pressure is 7Kpa, and temperature is 71.5 DEG C, and exchanger heat load is 3536kw.The gas that boils again passes into compressor and compresses, and the backflow temperature degree after compression is 84.6 DEG C, and backflow gas pipeline passes into last block column plate of rectifying column, compression process power consumption 259kw.Rectification energy-saving new process always consumes energy for 3795kw, and energy-conservation 21.3%.
Claims (1)
1. a Finestill energy-saving apparatus, comprise rectifying column, condenser and reboiler, it is characterized in that the tower bottoms discharging opening of rectifying column is connected with a current divider, two outlets of current divider are connected with product extraction pipeline and a point flow liquid pipeline respectively, flow liquid pipeline is divided to be connected with reboiler import, divide on flow liquid pipeline and arrange a choke valve, reboiler outlet is connected with a compressor by the gas pipeline that boils again, and compressor outlet is communicated with rectifying column by backflow gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540669.XU CN204815741U (en) | 2015-07-24 | 2015-07-24 | Rectification economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540669.XU CN204815741U (en) | 2015-07-24 | 2015-07-24 | Rectification economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204815741U true CN204815741U (en) | 2015-12-02 |
Family
ID=54673385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520540669.XU Active CN204815741U (en) | 2015-07-24 | 2015-07-24 | Rectification economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204815741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056561A (en) * | 2015-07-24 | 2015-11-18 | 河北新欣园能源股份有限公司 | Rectification energy-saving device and energy-saving process therefor |
-
2015
- 2015-07-24 CN CN201520540669.XU patent/CN204815741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056561A (en) * | 2015-07-24 | 2015-11-18 | 河北新欣园能源股份有限公司 | Rectification energy-saving device and energy-saving process therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240303 Address after: 061108 Zhongjie Industrial Park, Cangzhou City, Hebei Province Patentee after: HEBEI XINQIYUAN ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. Country or region after: China Address before: 061100 Zhongjie Industrial Park, Cangzhou City, Hebei Province, China National Offshore Oil Corporation South Patentee before: HEBEI XINXINYUAN ENERGY Co.,Ltd. Country or region before: China |