CN1055300A - Multistage flash evaporation and rectification coupling technology - Google Patents
Multistage flash evaporation and rectification coupling technology Download PDFInfo
- Publication number
- CN1055300A CN1055300A CN 91101456 CN91101456A CN1055300A CN 1055300 A CN1055300 A CN 1055300A CN 91101456 CN91101456 CN 91101456 CN 91101456 A CN91101456 A CN 91101456A CN 1055300 A CN1055300 A CN 1055300A
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- tower
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- main fractionating
- flash evaporation
- atmospheric
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Abstract
A kind of multistage flash evaporation and rectification coupling technology that is applicable to that oil and the bigger multicomponent system of other boiling-point differences separate, its principal character is at preceding two-stage or the flash column more than the two-stage (jar) of being provided with of atmospheric tower (main fractionating tower).Part for the condensate liquid of the flash steam of the first order refluxes as atmospheric tower (main fractionating tower) top adopts and divides a process control preferentially to pass back into tower; All the other flash steams at different levels are directly introduced isoconcentration (temperature) point of atmospheric tower (main fractionating tower) respectively.The characteristics that this technology has tangible raising treating capacity and product quality and cuts down the consumption of energy.
Description
The invention belongs to the process modification of the gas-liquid separation process of the bigger multicomponent system of oil and other boiling-point differences.
The fractionation process of normal decompression in petrochemical industry and general cracking (comprise and urge cracking, hydrocracking, thermal cracking, visbreaking, coking cracking etc.), its typical process as shown in Figure 1.Be that crude oil is through repeatedly heat exchange, be heated to the laggard destilling tower (or giving flash column) that gives of uniform temperature (about 200-250 ℃), obtain light fraction the crude oil from cat head, heavier fraction is heated to set point of temperature (about 370 ℃) through heating furnace again and enters atmospheric tower (or main fractionating tower) at the bottom of the tower, obtain gasoline, kerosene, fraction of diesel oil, the heavier fraction in bottom then goes vacuum tower further to process.
Searching document is found United States Patent (USP) (4082653; 1978.4) comparatively close with the present invention, but this patent is steamed the bottom that the column overhead flash steam all enters atmospheric tower (main fractionating tower) in the preceding set two-stage of atmospheric tower (main fractionating tower), and inlet port is lower than the inlet port of crude oil, and its purpose is to improve the extracting rate of atmospheric tower.In order to increase economic efficiency, people wish to tap the latent power on the basis of existing equipment, improve the output of product, cut down the consumption of energy.
The objective of the invention is: the inherent law of the multicomponent multistage flash evaporation of oneself discovering with us, the different qualities of multistage flash evaporation and rectifying is organically combined, a kind of multistage flash evaporation and rectification coupling technology are proposed, the effect that this technology has the output that improves product and quality and cuts down the consumption of energy.
Accompanying drawing 2 is work simplification flow charts of invention.Wherein 1 is first order flash column (or flash tank); 2 is second level flash column (or flash tank); 3 is heating furnace; 4 is atmospheric tower (main fractionating tower); 5 is first order flash condenser; 6 is atmospheric tower (main fractionating tower) overhead condenser.Characteristics of the present invention are: double flash evaporation tower (or the above flash column of two-stage) is set in the front of atmospheric tower (main fractionating tower), replaced giving destilling tower (or giving flash column) in the former technology, and the part that the condensate liquid of first order flash steam is refluxed as atmospheric tower (main fractionating tower) overhead condensation, the mode by minute process control enters in the atmospheric tower preferential backflow of this condensate liquid.Each isoconcentration (equitemperature) point that the above flash steams at different levels in the second level or the second level then directly are incorporated into atmospheric tower (main fractionating tower) respectively with gas phase goes.This new technology can more easily be achieved by the technological transformation to former technology.
Enforcement of the present invention can make the production capacity of original device improve 20-50%, and the quality of product can be improved the decline of specific yield energy consumption.If adopt new and effective, high-throughout ripple packing to transform traditional plate column again, the production capacity of original production device is turned over.The present invention is not only applicable to the production of petrochemical industry aspect, but also can be widely used in having the separation of other multicomponent systems of boiling-point difference greatly.
Claims (1)
1, a kind of multistage flash evaporation and rectification coupling technology that is applicable to that oil and the bigger multicomponent system of other boiling-point differences separate, it is characterized in that atmospheric tower (main fractionating tower) is provided with two-stage or the above multistage flash evaporation tower (jar) of two-stage before, the condensate liquid of the first order flash steam in its multistage flash evaporation preferentially flows in the tower as the part of atmospheric tower (main fractionating tower) top phegma by dividing process control, and the above flash steam in the second level is directly introduced respectively on each isoconcentration (equitemperature) point of atmospheric tower (main fractionation).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101456 CN1020257C (en) | 1991-03-07 | 1991-03-07 | Multistage flash and rectification coupling technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101456 CN1020257C (en) | 1991-03-07 | 1991-03-07 | Multistage flash and rectification coupling technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055300A true CN1055300A (en) | 1991-10-16 |
| CN1020257C CN1020257C (en) | 1993-04-14 |
Family
ID=4905099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101456 Expired - Fee Related CN1020257C (en) | 1991-03-07 | 1991-03-07 | Multistage flash and rectification coupling technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020257C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061080C (en) * | 1996-02-09 | 2001-01-24 | 清华大学 | Crude oil atmospheric vacuum rectifying process with extractive distillation zone |
| CN101890248A (en) * | 2010-07-09 | 2010-11-24 | 神华集团有限责任公司 | Distillation system and method for separating liquid product |
| CN101717658B (en) * | 2009-12-03 | 2012-10-17 | 中国石油天然气集团公司 | Multi-vaporization feeding method of oil product fractionator |
| CN111320999A (en) * | 2020-03-13 | 2020-06-23 | 中国科学院过程工程研究所 | Tar component separation system and method combining fractional condensation and rectification |
| CN113975839A (en) * | 2021-10-21 | 2022-01-28 | 山东昌邑石化有限公司 | Novel grading flash evaporation equipment and process |
-
1991
- 1991-03-07 CN CN 91101456 patent/CN1020257C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061080C (en) * | 1996-02-09 | 2001-01-24 | 清华大学 | Crude oil atmospheric vacuum rectifying process with extractive distillation zone |
| CN101717658B (en) * | 2009-12-03 | 2012-10-17 | 中国石油天然气集团公司 | Multi-vaporization feeding method of oil product fractionator |
| CN101890248A (en) * | 2010-07-09 | 2010-11-24 | 神华集团有限责任公司 | Distillation system and method for separating liquid product |
| CN101890248B (en) * | 2010-07-09 | 2013-01-16 | 神华集团有限责任公司 | Distillation system and method for separating liquid product |
| CN111320999A (en) * | 2020-03-13 | 2020-06-23 | 中国科学院过程工程研究所 | Tar component separation system and method combining fractional condensation and rectification |
| CN111320999B (en) * | 2020-03-13 | 2022-02-01 | 中国科学院过程工程研究所 | Tar component separation system and method combining fractional condensation and rectification |
| CN113975839A (en) * | 2021-10-21 | 2022-01-28 | 山东昌邑石化有限公司 | Novel grading flash evaporation equipment and process |
| CN113975839B (en) * | 2021-10-21 | 2023-01-10 | 山东昌邑石化有限公司 | Grading flash evaporation equipment and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1020257C (en) | 1993-04-14 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |