CN100488924C - Crude benzene forced heat exchange process - Google Patents
Crude benzene forced heat exchange process Download PDFInfo
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- CN100488924C CN100488924C CNB2007100106699A CN200710010669A CN100488924C CN 100488924 C CN100488924 C CN 100488924C CN B2007100106699 A CNB2007100106699 A CN B2007100106699A CN 200710010669 A CN200710010669 A CN 200710010669A CN 100488924 C CN100488924 C CN 100488924C
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- Prior art keywords
- oil
- poor
- rich
- heat exchanger
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005484 gravity Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- -1 benzene hydrocarbon Chemical class 0.000 abstract description 4
- 229930195733 hydrocarbon Natural products 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a crude benzene forced heat exchange process, and the related device comprises a debenzolization tower, a first-section lean and rich oil heat exchanger, a second-section lean and rich oil heat exchanger and a lean oil pump. The advantages are reducing the load of the lean oil two-stage heat exchanger, lowering the lean oil temperature, facilitating the absorption of the benzene hydrocarbon and improving the yield of the crude benzene.
Description
Technical field
The present invention relates to technical field of coal chemical industry, is a kind of coarse benzene forced heat-exchanging process.
Background technology
Crude benzol heat-exchanging process of the prior art, referring to Fig. 1, oil-poorly at the bottom of the tower enter one section poor oil-rich heat exchanger 3 by cutting off the gravity flow parallel connection at the bottom of the tower of debenzolizing tower 1, with oil-poor groove at the bottom of remittance debenzolizing tower 1 tower in parallel after the rich oil heat exchange, oil-poorly in the oil-poor groove send into two sections poor oil-rich heat exchangers 4, with remittance in parallel after the rich oil heat exchange board-like one section and two sections oil-poor water coolers through oil-poor pump 2.This method is oil-poorly at the bottom of the debenzolizing tower to enter five spiral-plate heat exchangers by cutting off the gravity flow parallel connection at the bottom of the tower, because gravity flow, oil-poor resistance through spiral-plate heat exchanger is excessive, causes the debenzolizing tower liquid level to exceed standard, and tower bottom pressure is big, and heat exchange efficiency is bad, and oil-poor oil return is not smooth.The former way that solves is to take out the method for oil-poor traffic pipe to keep production, this method has reduced the heat exchange efficiency of lean and fat oil, increased the load of oil-poor two sections interchanger, reduce rich oil and gone into the temperature of tube furnace, increased the gas consumption of tube furnace,, caused oil-poor temperature to exceed technical stipulation in summer during when two sections oil-poor interchanger scarce capacities, influence the absorption of benzene hydrocarbon, reduced the yield of crude benzol.
Summary of the invention
The purpose of this invention is to provide a kind of coarse benzene forced heat-exchanging process, this technology is to replace intrinsic gravity flow heat-exchanging process with forced heat-exchanging process, has alleviated the load of oil-poor two sections interchanger, has reduced oil-poor temperature, help the absorption of benzene hydrocarbon, improved the yield of crude benzol.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of coarse benzene forced heat-exchanging process, related device comprises debenzolizing tower, one section poor oil-rich heat exchanger, two sections poor oil-rich heat exchangers, oil-poor pump, this technology is by oil-poor pump and by-pass valve control, make at the bottom of the debenzolizing tower oil-poor by cutting off oil-poor groove at the bottom of the U envelope of flowing through enters tower at the bottom of the tower, oil-poorly in the oil-poor then groove send into one section spiral-plate heat exchanger through oil-poor parallel connection of pumps, with two sections spiral-plate heat exchangers of remittance in parallel after the rich oil heat exchange, with one section of remittance in parallel after the rich oil heat exchange and two sections board-like oil-poor water coolers; Pipeline middle part contact adds valve f1 between oil-poor pump discharge to two section poor oil-rich heat exchanger, and extremely former oil-poor gravity flow pipeline contact adds valve f2; Be exported to that the pipeline contact adds the oil-poor source line of f3 to two section poor oil-rich heat exchanger of valve middle part between the oil-poor groove in that one section poor oil-rich heat exchanger is oil-poor then.
The present invention's beneficial effect compared with prior art is: by the control of oil-poor pump and valve, make at the bottom of the debenzolizing tower oil-poor by cutting off oil-poor groove at the bottom of the U envelope of flowing through enters tower at the bottom of the tower, in the oil-poor then groove oil-poor through oil-poor be pumped into one section spiral-plate heat exchanger and rich oil heat exchange after two sections spiral-plate heat exchangers of remittance in parallel, with one section of remittance in parallel after the rich oil heat exchange and two sections board-like oil-poor water coolers.Alleviated the load of oil-poor two sections interchanger, reduced oil-poor temperature, the absorption of favourable benzene hydrocarbon has improved the yield of crude benzol.
Description of drawings
Fig. 1 is the process flow sheet of background technology.
Fig. 2 is a process flow sheet of the present invention.
Embodiment
See Fig. 1, Fig. 2, a kind of coarse benzene forced heat-exchanging process, related device comprise debenzolizing tower 1, one section poor oil-rich heat exchanger 3, two sections poor oil-rich heat exchangers 4, oil-poor pump 2, improve getting final product at former crude benzol process for cooling.
See Fig. 2, pipeline middle part contact adds valve f1 between oil-poor pump discharge to two section poor oil-rich heat exchanger, and extremely former oil-poor gravity flow pipeline contact adds valve f2; Be exported to that the pipeline contact adds the oil-poor source line of f3 to two section poor oil-rich heat exchanger of valve middle part between the oil-poor groove in that one section poor oil-rich heat exchanger is oil-poor then, make at the bottom of the debenzolizing tower oil-poor by cutting off oil-poor groove at the bottom of the U envelope of flowing through enters tower at the bottom of the tower, oil-poor in the oil-poor then groove through the oil-poor one section spiral-plate heat exchanger (parallel connection enters) that is pumped into, with two sections spiral-plate heat exchangers of remittance in parallel after the rich oil heat exchange, with one section of remittance in parallel after the rich oil heat exchange and two sections board-like oil-poor water coolers.
Claims (1)
1, a kind of coarse benzene forced heat-exchanging process, related device comprises debenzolizing tower, one section poor oil-rich heat exchanger, two sections poor oil-rich heat exchangers, oil-poor pump, it is characterized in that: this technology is by oil-poor pump and by-pass valve control, pipeline middle part contact adds first valve (f1) between oil-poor pump discharge to two section poor oil-rich heat exchanger, and extremely former oil-poor gravity flow pipeline contact adds second valve (f2); Be exported to that the pipeline contact adds the 3rd valve (f3) to the two sections oil-poor source lines of poor oil-rich heat exchanger middle parts between the oil-poor groove in that one section poor oil-rich heat exchanger is oil-poor then; Make at the bottom of the debenzolizing tower oil-poor by cutting off oil-poor groove at the bottom of the U envelope of flowing through enters tower at the bottom of the tower, oil-poorly in the oil-poor then groove send into one section spiral-plate heat exchanger through oil-poor parallel connection of pumps, with two sections spiral-plate heat exchangers of remittance in parallel after the rich oil heat exchange, with one section of remittance in parallel after the rich oil heat exchange and two sections board-like oil-poor water coolers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100106699A CN100488924C (en) | 2007-03-21 | 2007-03-21 | Crude benzene forced heat exchange process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100106699A CN100488924C (en) | 2007-03-21 | 2007-03-21 | Crude benzene forced heat exchange process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101024597A CN101024597A (en) | 2007-08-29 |
| CN100488924C true CN100488924C (en) | 2009-05-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100106699A Active CN100488924C (en) | 2007-03-21 | 2007-03-21 | Crude benzene forced heat exchange process |
Country Status (1)
| Country | Link |
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| CN (1) | CN100488924C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544913B (en) * | 2009-05-04 | 2012-06-20 | 济南冶金化工设备有限公司 | Process and equipment for negative pressure benzene removal |
| CN101597517B (en) * | 2009-06-17 | 2012-05-23 | 济钢集团国际工程技术有限公司 | Rich oil de-benzene process |
| CN105331395B (en) * | 2014-08-08 | 2018-02-16 | 宝钢工程技术集团有限公司 | With de- benzene heat it is oil-poor be thermal source without steam gas cleaning device and its application method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB619496A (en) * | 1945-09-10 | 1949-03-10 | Newton Chambers & Co | Improvements relating to the distillation of coal tar or mineral oils |
| GB1117825A (en) * | 1966-01-10 | 1968-06-26 | Stal Refrigeration Ab | Method of circulating oil in refrigerating plants |
| GB1218538A (en) * | 1968-08-24 | 1971-01-06 | Koppers Gmbh Heinrich | Indirect heat exchange method |
| CN2551312Y (en) * | 2002-05-31 | 2003-05-21 | 顾安胜 | Crude benzole dephlegmator |
-
2007
- 2007-03-21 CN CNB2007100106699A patent/CN100488924C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB619496A (en) * | 1945-09-10 | 1949-03-10 | Newton Chambers & Co | Improvements relating to the distillation of coal tar or mineral oils |
| GB1117825A (en) * | 1966-01-10 | 1968-06-26 | Stal Refrigeration Ab | Method of circulating oil in refrigerating plants |
| GB1218538A (en) * | 1968-08-24 | 1971-01-06 | Koppers Gmbh Heinrich | Indirect heat exchange method |
| CN2551312Y (en) * | 2002-05-31 | 2003-05-21 | 顾安胜 | Crude benzole dephlegmator |
Non-Patent Citations (6)
| Title |
|---|
| 粗苯生产工艺的优化. 李振华.科技、工程与经济社会协调发展——河南省第四届青年学术年会论文集（上册）. 2004 |
| 粗苯生产工艺的优化. 李振华.科技、工程与经济社会协调发展——河南省第四届青年学术年会论文集（上册）. 2004 * |
| 粗苯蒸馏工艺改造. 徐贺明.河北冶金，第4期. 2001 |
| 粗苯蒸馏工艺改造. 徐贺明.河北冶金，第4期. 2001 * |
| 螺旋板换热器在粗苯贫油换热的应用. 王建坤.天津冶金，第3期. 2006 |
| 螺旋板换热器在粗苯贫油换热的应用. 王建坤.天津冶金，第3期. 2006 * |
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| Publication number | Publication date |
|---|---|
| CN101024597A (en) | 2007-08-29 |
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Effective date of registration: 20210825 Address after: 114000 Angang Xiaodongmen, Lishan District, Anshan City, Liaoning Province Patentee after: Anshan Chemical Technology Co.,Ltd. Address before: 114000 Anshan Iron and steel factory, Tiexi District, Liaoning, Anshan Patentee before: ANGANG STEEL COMPANY LIMITED |
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