CN110527540B - Washing oil distillation device - Google Patents
Washing oil distillation device Download PDFInfo
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- CN110527540B CN110527540B CN201910937689.3A CN201910937689A CN110527540B CN 110527540 B CN110527540 B CN 110527540B CN 201910937689 A CN201910937689 A CN 201910937689A CN 110527540 B CN110527540 B CN 110527540B
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- wash oil
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- 238000005406 washing Methods 0.000 title claims abstract description 146
- 238000004821 distillation Methods 0.000 title claims abstract description 29
- QPUYECUOLPXSFR-UHFFFAOYSA-N 1-methylnaphthalene Chemical compound C1=CC=C2C(C)=CC=CC2=C1 QPUYECUOLPXSFR-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000010992 reflux Methods 0.000 claims abstract description 35
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 287
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 75
- 241000736911 Turritella communis Species 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000000295 fuel oil Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000011280 coal tar Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
- C10C1/04—Working-up tar by distillation
- C10C1/14—Winning of tar oils from tar
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention relates to the technical field of wash oil of coal tar, in particular to a wash oil distillation device, which comprises an industrial naphthalene rectifying tower system, a wash oil distillation system and a vacuum unit, wherein the industrial naphthalene rectifying tower system comprises a rectifying tower, a rectifying tower circulating pump and a rectifying tower heating furnace, and the wash oil distillation system is respectively connected with the industrial naphthalene rectifying tower system and the vacuum unit and is used for keeping the inside of the wash oil tower in a negative pressure state; the wash oil distillation system comprises a wash oil tower, a wash oil tower reboiler, a methylnaphthalene reflux tank, a methylnaphthalene reflux pump and a benzene-washing oil cooler, wherein the wash oil tower comprises five layers of structures, namely a first layer of structure, a second layer of structure, a third layer of structure, a fourth layer of structure and a fifth layer of structure from top to bottom, the top of the first layer of structure is provided with a wash oil tower top, and the bottom of the fifth layer of structure is provided with a wash oil tower bottom. The wash oil distillation device reduces the consumption of distilled gas and reduces the waste of energy.
Description
Technical Field
The invention relates to the technical field of wash oil of coal tar, in particular to a wash oil distillation device.
Background
The wash oil is one of important fractions in the coal tar rectifying process, and has a boiling range of 230-300 ℃ and accounts for about 4.5-10% of the coal tar, and is a complex mixture.
The traditional reprocessing of the wash oil comprises a kettle type and a tower type, the low-temperature wash oil is less than 60 ℃, the wash oil at 270 ℃ produced by a rectifying tower is required to be cooled to 60-80 ℃, then the wash oil is taken as a raw material to be put into a wash oil distillation device, and then the materials are secondarily separated by heating, so that the problems of high distilled gas consumption, high energy consumption and the like exist.
Disclosure of Invention
In view of the above, the invention provides a wash oil distillation device, which is characterized in that wash oil in a rectifying tower is directly put into the wash oil tower for distillation, and heat exchange is carried out by matching with a reboiler of the wash oil tower, so that the consumption of distilled gas is reduced, and the waste of energy sources is reduced.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the invention provides a wash oil distillation device, comprising:
the washing oil distillation device comprises an industrial naphthalene rectifying tower system, wherein the industrial naphthalene rectifying tower system comprises a rectifying tower, a rectifying tower circulating pump, a rectifying tower heating furnace, a washing oil distillation system and a vacuum unit, the washing oil distillation system is respectively connected with the industrial naphthalene rectifying tower system and the vacuum unit, and the vacuum unit is used for keeping the inside of the washing oil tower in a negative pressure state;
the wash oil distillation system comprises a wash oil tower, a wash oil tower reboiler, a methylnaphthalene reflux tank, a methylnaphthalene reflux pump and a benzene washing and oil cooling device, wherein the wash oil tower comprises five layers of structures, namely a first layer of structure, a second layer of structure, a third layer of structure, a fourth layer of structure and a fifth layer of structure, from top to bottom, the top of the wash oil tower is arranged above the first layer of structure, and the bottom of the wash oil tower is arranged below the fifth layer of structure;
the oil washing tower reboiler comprises an oil washing tower reboiler shell pass and an oil washing tower reboiler tube pass, and the oil washing tower reboiler tube pass is arranged in the oil washing tower reboiler shell pass;
the suction end of the rectifying tower circulating pump is connected with the bottom of the rectifying tower, the output end of the rectifying tower circulating pump is connected to the inside of the second layer structure through a first control valve, the rectifying tower circulating pump is connected with the shell side of the oil washing tower through a second control valve, the rectifying tower circulating pump pumps out the rectifying tower washing oil from the bottom of the rectifying tower, the rectifying tower washing oil is divided into a rectifying tower washing oil first part and a rectifying tower washing oil second part for conveying, the rectifying tower washing oil first part is directly conveyed into the second layer structure of the oil washing tower, and the rectifying tower washing oil second part is conveyed into the shell side of the oil washing tower for carrying out heat exchange circulation with circulating materials at the bottom of the oil washing tower;
the rectifying tower heating furnace is respectively connected with the shell side of the wash oil tower, the second control valve and the output end of the rectifying tower circulating pump; the second part of the rectifying tower washing oil after heat exchange is conveyed into a rectifying tower heating furnace by a washing oil tower shell pass, the rectifying tower heating furnace heats the second part of the rectifying tower washing oil, and the second part of the rectifying tower washing oil is conveyed back into the rectifying tower after being heated to 270-290 ℃ so as to supply heat to the rectifying tower in a circulating mode;
the bottom of the oil washing tower is connected with an oil washing tower bottom circulating pump, one end of the oil washing tower bottom circulating pump is connected with the bottom of the oil washing tower, the other end of the oil washing tower bottom circulating pump is respectively connected with a reboiler tube pass of the oil washing tower and a heavy oil washing cooler, the reboiler tube pass of the oil washing tower is respectively connected with the oil washing tower bottom circulating pump and the bottom of the oil washing tower, and the shell pass of the oil washing tower reboiler is connected with the shell pass of a third layer structure of the oil washing tower; one end of the heavy wash oil cooler is connected with a wash oil tower bottom circulating pump, and the other end of the heavy wash oil cooler is connected with a heavy wash oil product tank;
the wash oil at the bottom of the wash oil tower is pumped out by the wash oil tower circulating pump at the bottom of the wash oil tower, and the wash oil at the bottom of the wash oil tower is divided into a first part of wash oil at the bottom of the wash oil tower and a second part of wash oil at the bottom of the wash oil tower, wherein the first part of wash oil at the bottom of the wash oil tower flows into the bottom of the wash oil tower again through a tube pass of a reboiler of the wash oil tower, so that heat exchange with the second part of wash oil at the bottom of the rectifying tower in a shell pass of the wash oil tower is realized, and the second part of wash oil at the bottom of the wash oil is conveyed to a heavy wash oil product tank through a heavy oil cooler;
one end of the vacuum unit is connected to the top of the methylnaphthalene reflux tank through an exhaust pipe, and the other end of the vacuum unit is connected with an external tail gas purifying device through a tail gas pipe and used for reducing the pressure of the wash oil tower.
As an improvement: the top of the wash oil tower is respectively connected with a condensate cooler at the top of the wash oil tower and a third control valve, one end of the condensate cooler at the top of the wash oil tower is connected with the top of the wash oil tower, the other end of the condensate cooler at the top of the wash oil tower is connected with a methylnaphthalene reflux tank, the suction end of the methylnaphthalene reflux pump is connected with the bottom of the methylnaphthalene reflux tank, the other end of the methylnaphthalene reflux pump is respectively connected with the top of the wash oil tower through the third control valve, and the other end of the methylnaphthalene reflux pump is connected with a methylnaphthalene finished product tank through a fourth control valve.
As an improvement: one end of the benzene washing oil cooler is respectively connected with the third layer structure, the fourth layer structure and the inside of the fifth layer structure of the benzene washing oil tower, the other end of the benzene washing oil cooler is connected with the suction end of the benzene washing oil pumping pump, and the output end of the benzene washing oil pumping pump is connected with the benzene washing oil product tank.
In summary, the invention has the following technical effects:
the first part of the washing oil of the rectifying tower is directly put into the washing oil tower for distillation, and the second part of the washing oil of the rectifying tower is conveyed into the shell pass of the washing oil tower for heat exchange circulation with circulating materials at the bottom of the washing oil tower, and the first part of the washing oil at the bottom of the washing oil tower flows into the bottom of the washing oil tower again through the tube pass of a reboiler of the washing oil tower, so that heat exchange with the second part of the washing oil of the rectifying tower in the shell pass of the washing oil tower is realized, and the waste of energy and the consumption of coal gas are reduced through multiple heat exchange;
the vacuum unit is connected to the top of the methylnaphthalene reflux tank, so that the pressure in the wash oil tower can be reduced;
the production of methyl naphthalene products is realized through the condensing cooler at the top of the wash oil tower, the methyl naphthalene reflux tank and the methyl naphthalene reflux pump, and the production of benzene washing and oil washing products is realized through the benzene washing and oil cooling device and the benzene washing and oil washing pump.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic diagram of a connection structure of a wash oil distillation apparatus;
wherein: 1. an industrial naphthalene rectifying column system; 11. a rectifying tower; 12. a rectifying column circulating pump; 13. a rectifying tower heating furnace; 2. a wash oil distillation system; 21. a wash oil tower reboiler; 22. a methylnaphthalene reflux tank; 23. a methylnaphthalene reflux pump; 24. an oil washing tower; 241. the top of the wash oil tower; 242. a first layer structure; 243. a second layer structure; 244. a third layer structure; 245 a fourth layer structure; 246. a fifth layer structure; 247. the bottom of the wash oil tower; 25. benzene washing and oil cooler washing; 26. a wash oil tower bottom circulating pump; 27. a first control valve; 28. a second control valve; 29. heavy oil washing cooler; 210. a heavy wash oil product tank; 211. a condensate cooler at the top of the wash oil tower; 212. a third control valve; 213. a fourth control valve; 214. a methylnaphthalene finished product tank; 215. benzene washing and oil washing pump; 216. a benzene washing oil product tank; 3. and (5) a vacuum unit.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Exemplary embodiments of the present invention are described below in conjunction with specific cases:
referring to fig. 1, a wash oil distillation apparatus includes an industrial naphthalene rectifying tower system 1, wherein the industrial naphthalene rectifying tower system 1 includes a rectifying tower 11, a rectifying tower circulating pump 12, a rectifying tower heating furnace 13, a wash oil distillation system 2, and a vacuum unit 3, the wash oil distillation system 2 is respectively connected with the industrial naphthalene rectifying tower system 1 and the vacuum unit 3, and the vacuum unit 3 is used for maintaining the inside of the wash oil tower 24 in a negative pressure state.
The wash oil distillation system 2 comprises a wash oil tower 24, a wash oil tower reboiler 21, a methylnaphthalene reflux tank 22, a methylnaphthalene reflux pump 23 and a benzene-washing oil cooler 25, wherein the wash oil tower 24 comprises five layers of structures, namely a first layer structure 242, a second layer structure 243, a third layer structure 244, a fourth layer structure 245 and a fifth layer structure 246, from top to bottom, a wash oil tower top 241 is arranged above the first layer structure 242, and a wash oil tower bottom 247 is arranged below the fifth layer structure 246.
The oil-washing tower reboiler 21 comprises an oil-washing tower reboiler shell pass and an oil-washing tower reboiler tube pass, and the oil-washing tower reboiler tube pass is arranged in the oil-washing tower reboiler shell pass.
The suction end of the rectifying column circulating pump 12 is connected with the bottom of the rectifying column 11, the output end of the rectifying column circulating pump 12 is connected to the inside of the second layer structure 243 through the first control valve 27, the end of the rectifying column circulating pump 12 is simultaneously connected with the shell side of the oil washing tower 24 through the second control valve 28, rectifying column washing oil is pumped out from the bottom of the rectifying column 11, and is divided into a rectifying column washing oil first part and a rectifying column washing oil second part for conveying, the rectifying column washing oil first part is directly conveyed into the second layer structure 243 of the oil washing tower 24 through the rectifying column circulating pump 12, and the rectifying column washing oil second part is conveyed into the oil washing tower shell side for carrying out heat exchange circulation with circulating materials of the oil washing tower bottom 247.
The rectifying tower heating furnace 13 is respectively connected with the shell side of the wash oil tower 24, the second control valve 28 and the output end of the rectifying tower circulating pump 12; the second part of the rectifying tower washing oil after heat exchange is conveyed into a rectifying tower heating furnace 13 by a washing oil tower shell side, the rectifying tower heating furnace 13 heats the second part of the rectifying tower washing oil, and the second part of the rectifying tower washing oil is conveyed back into the rectifying tower 11 after being heated to 270-290 ℃ so as to supply heat to the rectifying tower 11 in a circulating mode;
the bottom 247 of the wash oil tower is connected with the circulating pump 26 at the bottom of the wash oil tower, one end of the circulating pump 26 at the bottom of the wash oil tower is connected with the bottom 247 of the wash oil tower, the other end is respectively connected with the tube pass of the reboiler 21 of the wash oil tower and the heavy wash oil cooler 29, the tube pass of the reboiler 21 of the wash oil tower is respectively connected with the circulating pump at the bottom of the wash oil tower 24 and the bottom of the wash oil tower 24, and the shell pass of the reboiler 21 of the wash oil tower is connected with the shell pass of the third layer structure 244 of the wash oil tower 24; one end of the heavy wash oil cooler 29 is connected to the wash oil bottom circulation pump 26, and the other end is connected to the heavy wash oil product tank 210.
The wash oil at the bottom of the wash oil tower is pumped out by the wash oil tower bottom 247 by the wash oil tower bottom circulating pump 26, and the wash oil at the bottom of the wash oil tower is divided into a first part of the wash oil at the bottom of the wash oil tower and a second part of the wash oil at the bottom of the wash oil tower, the first part of the wash oil at the bottom of the wash oil 4 flows into the bottom of the wash oil tower 24 again through the tube pass of the reboiler 21 of the wash oil tower, so as to exchange heat with the second part of the wash oil at the rectifying tower 11 in the shell pass of the wash oil tower 24, the heat exchange is carried out until the temperature is between 240 and 250 ℃, and the second part of the wash oil at the bottom of the wash oil is cooled to 90 and 100 ℃ through the heavy wash oil cooler 29 and then is conveyed to the heavy wash oil product tank 210 to become a heavy wash oil finished product.
According to the invention, the first part of the washing oil of the rectifying tower is directly put into the washing oil tower 24 for distillation, and the second part of the washing oil of the rectifying tower 1 is conveyed into the washing oil tower shell side for heat exchange circulation with circulating materials at the bottom 247 of the washing oil tower, so that the first part of the washing oil at the bottom 247 of the washing oil tower flows into the bottom 247 of the washing oil tower again through the tube side of the reboiler 21 of the washing oil tower, heat exchange with the second part of the washing oil of the rectifying tower in the washing oil tower shell side is realized, and the waste of energy and the consumption of gas are reduced through multiple times of heat exchange.
One end of the vacuum unit 3 is connected to the top of the methylnaphthalene reflux drum 22 through an exhaust pipe, and the other end is connected to an external tail gas purifying device through a tail gas pipe for reducing the pressure of the wash oil tower 24.
The top 241 of the wash oil tower is respectively connected with the condensate cooler 211 of the top of the wash oil tower and the third control valve 212, one end of the condensate cooler of the top 24 of the wash oil tower is connected with the top 241 of the wash oil tower, the other end is connected with the methylnaphthalene reflux tank 22, the suction end of the methylnaphthalene reflux pump 23 is connected with the bottom of the methylnaphthalene reflux tank 22, the other end is respectively connected with the top 241 of the wash oil tower through the third control valve 212, and the other end is connected with the methylnaphthalene finished product tank 214 through the fourth control valve 213.
The oil gas at the top 241 of the oil washing tower is cooled to 70-80 ℃ by a methylnaphthalene cooler, enters a methylnaphthalene reflux tank 22, is separated into reflux liquid and a methylnaphthalene finished product by a methylnaphthalene reflux pump 23, and the reflux liquid is conveyed into the top 241 of the oil washing tower by a third control valve 212 and is conveyed into a methylnaphthalene finished product tank 214 to form the methylnaphthalene finished product.
The production of methylnaphthalene products is achieved by a wash oil top condensate cooler 211, a methylnaphthalene reflux drum 22 and a methylnaphthalene reflux pump 23.
One end of the benzene washing oil cooler 25 is respectively connected with the inside of the third layer structure 244, the fourth layer structure 245 and the fifth layer structure 246 of the oil washing tower 24, the other end is connected with the suction end of the benzene washing oil pumping pump 215, and the output end of the benzene washing oil pumping pump 215 is connected with the benzene washing oil product tank 216.
Production of methyl naphthalene products is achieved through a wash oil tower top condensation cooler 211, a methyl naphthalene reflux tank 22 and a methyl naphthalene reflux pump 23, and production of benzene wash oil products is achieved through a benzene wash oil cooler 25 and a benzene wash oil pump 215.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing has outlined rather broadly the more detailed description of the invention in order that the detailed description of the invention that follows may be better understood, and in order that the present principles and embodiments may be better understood; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present invention, the present disclosure should not be construed as limiting the present invention in summary.
Claims (3)
1. The washing oil distillation device comprises an industrial naphthalene rectifying tower system, wherein the industrial naphthalene rectifying tower system comprises a rectifying tower, a rectifying tower circulating pump and a rectifying tower heating furnace, and is characterized by further comprising a washing oil distillation system and a vacuum unit, wherein the washing oil distillation system is respectively connected with the industrial naphthalene rectifying tower system and the vacuum unit, and the vacuum unit is used for keeping the inside of the washing oil tower in a negative pressure state;
the wash oil distillation system comprises a wash oil tower, a wash oil tower reboiler, a methylnaphthalene reflux tank, a methylnaphthalene reflux pump and a benzene washing and oil cooling device, wherein the wash oil tower comprises five layers of structures, namely a first layer of structure, a second layer of structure, a third layer of structure, a fourth layer of structure and a fifth layer of structure, from top to bottom, the top of the wash oil tower is arranged above the first layer of structure, and the bottom of the wash oil tower is arranged below the fifth layer of structure;
the oil washing tower reboiler comprises an oil washing tower reboiler shell pass and an oil washing tower reboiler tube pass, and the oil washing tower reboiler tube pass is arranged in the oil washing tower reboiler shell pass;
the suction end of the rectifying tower circulating pump is connected with the bottom of the rectifying tower, the output end of the rectifying tower circulating pump is connected to the inside of the second layer structure through a first control valve, the rectifying tower circulating pump is connected with the shell side of the oil washing tower through a second control valve, the rectifying tower circulating pump pumps out the rectifying tower washing oil from the bottom of the rectifying tower, the rectifying tower washing oil is divided into a rectifying tower washing oil first part and a rectifying tower washing oil second part for conveying, the rectifying tower washing oil first part is directly conveyed into the second layer structure of the oil washing tower, and the rectifying tower washing oil second part is conveyed into the shell side of the oil washing tower for carrying out heat exchange circulation with circulating materials at the bottom of the oil washing tower;
the rectifying tower heating furnace is respectively connected with the shell side of the wash oil tower, the second control valve and the output end of the rectifying tower circulating pump; the second part of the rectifying tower washing oil after heat exchange is conveyed into a rectifying tower heating furnace by a washing oil tower shell pass, the rectifying tower heating furnace heats the second part of the rectifying tower washing oil, and the second part of the rectifying tower washing oil is conveyed back into the rectifying tower after being heated to 270-290 ℃ so as to supply heat to the rectifying tower in a circulating mode;
the bottom of the oil washing tower is connected with an oil washing tower bottom circulating pump, one end of the oil washing tower bottom circulating pump is connected with the bottom of the oil washing tower, the other end of the oil washing tower bottom circulating pump is respectively connected with a reboiler tube pass of the oil washing tower and a heavy oil washing cooler, the reboiler tube pass of the oil washing tower is respectively connected with the oil washing tower bottom circulating pump and the bottom of the oil washing tower, and the shell pass of the oil washing tower reboiler is connected with the shell pass of a third layer structure of the oil washing tower; one end of the heavy wash oil cooler is connected with a wash oil tower bottom circulating pump, and the other end of the heavy wash oil cooler is connected with a heavy wash oil product tank;
the wash oil at the bottom of the wash oil tower is pumped out by the wash oil tower circulating pump at the bottom of the wash oil tower, and the wash oil at the bottom of the wash oil tower is divided into a first part of wash oil at the bottom of the wash oil tower and a second part of wash oil at the bottom of the wash oil tower, wherein the first part of wash oil at the bottom of the wash oil tower flows into the bottom of the wash oil tower again through a tube pass of a reboiler of the wash oil tower, so that heat exchange with the second part of wash oil at the bottom of the rectifying tower in a shell pass of the wash oil tower is realized, and the second part of wash oil at the bottom of the wash oil is conveyed to a heavy wash oil product tank through a heavy oil cooler;
one end of the vacuum unit is connected to the top of the methylnaphthalene reflux tank through an exhaust pipe, and the other end of the vacuum unit is connected with an external tail gas purifying device through a tail gas pipe and used for reducing the pressure of the wash oil tower.
2. The wash oil distillation device according to claim 1, wherein the top of the wash oil tower is respectively connected with a condensate cooler of the top of the wash oil tower and a third control valve, one end of the condensate cooler of the top of the wash oil tower is connected with the top of the wash oil tower, the other end is connected with a methylnaphthalene reflux tank, the suction end of the methylnaphthalene reflux pump is connected with the bottom of the methylnaphthalene reflux tank, the other end is respectively connected with the top of the wash oil tower through the third control valve, and the other end is connected with a methylnaphthalene finished product tank through a fourth control valve.
3. The apparatus according to claim 1, wherein one end of the benzene washing oil cooler is connected to the third layer structure, the fourth layer structure and the fifth layer structure of the oil washing tower, respectively, and the other end is connected to the suction end of the benzene washing oil pump, and the output end of the benzene washing oil pump is connected to the benzene washing oil product tank.
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| CN201910937689.3A CN110527540B (en) | 2019-09-30 | 2019-09-30 | Washing oil distillation device |
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| CN201910937689.3A CN110527540B (en) | 2019-09-30 | 2019-09-30 | Washing oil distillation device |
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| GB766120A (en) * | 1952-06-20 | 1957-01-16 | Koppers Gmbh Heinrich | Improvements in or relating to the distillation of benzolised wash oil |
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| CN103242902A (en) * | 2013-04-25 | 2013-08-14 | 新疆鑫联煤化工有限公司 | Processing method of coal tar |
| CN105733636A (en) * | 2016-04-15 | 2016-07-06 | 天津中科拓新科技有限公司 | Heat integration distillation deep processing method and device of absorber oil |
| WO2018090460A1 (en) * | 2016-11-17 | 2018-05-24 | 天津大学 | Re-refining process and system for use with unqualified liquid ammonia in oil refining waste water production |
| CN211546425U (en) * | 2019-09-30 | 2020-09-22 | 河南博海化工有限公司 | Washing oil distillation device |
-
2019
- 2019-09-30 CN CN201910937689.3A patent/CN110527540B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB766120A (en) * | 1952-06-20 | 1957-01-16 | Koppers Gmbh Heinrich | Improvements in or relating to the distillation of benzolised wash oil |
| CN101143802A (en) * | 2007-10-17 | 2008-03-19 | 上海奥韦通工程技术有限公司 | Technique for processing heavy benzene |
| CN103242902A (en) * | 2013-04-25 | 2013-08-14 | 新疆鑫联煤化工有限公司 | Processing method of coal tar |
| CN105733636A (en) * | 2016-04-15 | 2016-07-06 | 天津中科拓新科技有限公司 | Heat integration distillation deep processing method and device of absorber oil |
| WO2018090460A1 (en) * | 2016-11-17 | 2018-05-24 | 天津大学 | Re-refining process and system for use with unqualified liquid ammonia in oil refining waste water production |
| CN211546425U (en) * | 2019-09-30 | 2020-09-22 | 河南博海化工有限公司 | Washing oil distillation device |
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| CN110527540A (en) | 2019-12-03 |
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