CN105859511B - The separator and separation method of TCE by-product low-boiling-point substance - Google Patents
The separator and separation method of TCE by-product low-boiling-point substance Download PDFInfo
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- CN105859511B CN105859511B CN201610346370.XA CN201610346370A CN105859511B CN 105859511 B CN105859511 B CN 105859511B CN 201610346370 A CN201610346370 A CN 201610346370A CN 105859511 B CN105859511 B CN 105859511B
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- boiling
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
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- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses the separator and separation method of a kind of TCE by-product low-boiling-point substance, the separator include for hold TCE by-product low-boiling-point substance low boiling handle kettle and be set to low boiling processing kettle top fractionating column；The bottom of low boiling processing kettle is connected by column bottoms pump with bottoms pans；The top of low boiling processing kettle is connected by condensing unit with return tank, and the bottom of return tank is successively connected with one end of reflux pump, rear pump；Wherein, the other end of reflux pump is connected with fractionating column, and the other end of rear pump is connected with distribution platform；And distribute platform separately with extraction-container, go low-boiling-point substance slot, dichloroethylene basin and trichloroethanes basin to be connected.Efficiently separating for TCE by-product low-boiling-point substance can be effectively realized by the separator.
Description
Technical field
The present invention relates to TCE by-product low-boiling-point substances, and in particular, to the separator of TCE by-product low-boiling-point substance and separation side
Method.
Background technique
TCE(trichloro ethylene) a large amount of by-product can be generated in process of production, such as practical TCE yield 62000t, low boiling
Produce amount about 900t, low-boiling-point substance yield are about 1.45%, wherein low boiling mixture content about dichloroethylene 60%(it is trans- account for 95%), 1,1,
2- trichloroethanes 20%, tetrachloro-ethylene 12% and tetrachloroethanes 2%, trichloro ethylene 2.4%.
Currently, intermediate liquid of top of the tower (1,1,2- tri- alkane when low boiling liquid of top of the tower (low-boiling-point substance 10%, triolefin 90%) and tetraene refine
10%, tetraene 90%) it is respectively present low-boiling-point substance and three alkane cumulative appearances, effect of two towers in rectifying is influenced, content reaches certain
Triolefin and smart tetraene quality decline are directly resulted in when concentration.Existing production technology can not be solved from basic, can only be by draining into outside
The processing of low-boiling-point substance storage tank, the outer discharge capacity of about 40-50t, wastes larger every year.
Summary of the invention
The object of the present invention is to provide the separators and separation method of a kind of TCE by-product low-boiling-point substance, pass through the separation
Device can effectively realize efficiently separating for TCE by-product low-boiling-point substance.
To achieve the goals above, the present invention provides a kind of separator of TCE by-product low-boiling-point substance, separator includes
Low boiling for holding TCE by-product low-boiling-point substance handles kettle and is set to the fractionating column at the top of low boiling processing kettle；Low boiling processing
The bottom of kettle is connected by column bottoms pump with bottoms pans；The top that low boiling handles kettle passes through condensing unit and return tank phase
Connection, and the bottom of return tank is successively connected with one end of reflux pump, rear pump；Wherein, the other end of reflux pump with point
It evaporates tower to be connected, the other end of rear pump is connected with distribution platform；And distribute platform separately with extraction-container, remove low-boiling-point substance
Slot, dichloroethylene basin are connected with trichloroethanes basin.
Preferably, the outer cover of low boiling processing kettle is equipped with kettle set, and kettle set is connected with steam.
Preferably, condensing unit includes full cooler and tail condenser；It is connected at the top of one end of full cooler and fractionating column, separately
It is connected at the top of one end and return tank；The side wall of the upper end of one end and fractionating column of tail condenser is connected, the other end and reflux
It is connected at the top of tank.
Preferably, one end of tail condenser also passes through separator and is connected with surge tank.
Invention further provides a kind of separation methods of TCE by-product low-boiling-point substance, and the separation method is in above-mentioned separation
It is carried out in device；Separation method includes:
1) by TCE by-product low-boiling-point substance be placed in low boiling processing kettle in be treated with heat such that steam by enter fractionating column in
It is fractionated；
2) by steam by the top of fractionating column, then enter after return tank flowed back so that being flowed back through condensing unit
Product form solid and gaseous state object；Wherein, solid is fed back in fractionating column by reflux pump and carries out secondary treatment, gaseous state
Object is delivered in distribution platform by rear pump and is allocated；
3) gaseous state object is respectively allocated to extraction-container by distribution platform with different temperatures, low-boiling-point substance slot, dichloroethylene is gone to store
Tank and trichloroethanes basin are condensed, are stored；
4) bottoms of low boiling processing kettle are delivered in bottoms pans by column bottoms pump and are stored.
It preferably, is 31.4-31.8 DEG C into the temperature of the gaseous state object in dichloroethylene basin.
It preferably, is 113.3-113.7 DEG C DEG C into the temperature of the gaseous state object in trichloroethanes basin.
According to the above technical scheme, separation method provided by the invention is on the basis of combining above-mentioned separator, first
By TCE by-product low-boiling-point substance be placed in low boiling processing kettle in be treated with heat such that steam by enter fractionating column in be fractionated；
Then by steam by the top of fractionating column, then enter return tank through condensing unit and flowed back so that product after being flowed back
Form solid and gaseous state object；Wherein, solid is fed back in fractionating column by reflux pump and carries out secondary treatment, and gaseous state object passes through
Rear pump is delivered in distribution platform and is allocated；Then gaseous state object is respectively allocated to parsing by distribution platform with different temperatures
Kettle goes low-boiling-point substance slot, dichloroethylene basin and trichloroethanes basin to be condensed, stored；Finally by the bottom of low boiling processing kettle
Residue is delivered in bottoms pans by column bottoms pump and is stored.It can be effectively by above-mentioned a series of processing
Main component in TCE by-product low-boiling-point substance is efficiently separated and is come, classified storage is realized, a large amount of warp can not only be generated
Ji benefit, while environment is also brought and is greatly protected.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of preferred embodiment of TCE by-product low-boiling-point substance separator provided by the invention.
Description of symbols
1, low boiling handles 2 kettle set of kettle
3, fractionating column 4, column bottoms pump
5, bottoms pans 6, full cooler
7, tail condenser 8, separator
9, surge tank 10, return tank
11, reflux pump 12, rear pump
13, it distributes platform 14, remove extraction-container
15, low-boiling-point substance slot 16, dichloroethylene basin are removed
17, trichloroethanes basin
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality that " top, bottom " etc. is included in the term only represents
Orientation of the term under normal service condition, or be those skilled in the art understand that be commonly called as, and be not construed as to the term
Limitation.
The present invention provides a kind of separators of TCE by-product low-boiling-point substance, as shown in Figure 1, the separator includes being used for
It holds the low boiling processing kettle 1 of TCE by-product low-boiling-point substance and is set to the fractionating column 3 at the top of low boiling processing kettle 1；Low boiling handles kettle
1 bottom is connected by column bottoms pump 4 with bottoms pans 5；The top that low boiling handles kettle 1 passes through condensing unit and return tank
10 are connected, and the bottom of return tank 10 is successively connected with one end of reflux pump 11, rear pump 12；Wherein, reflux pump 11
The other end be connected with fractionating column 3, the other end of rear pump 12 is connected with distribution platform 13；And distribute platform 13 independently
Ground and extraction-container 14 go low-boiling-point substance slot 15, dichloroethylene basin 16 and trichloroethanes basin 17 to be connected.
TCE by-product low-boiling-point substance is placed in low boiling first on the basis of combining above-mentioned separator by above-mentioned separation method
Processing kettle 1 in be treated with heat such that steam by enter fractionating column 3 in be fractionated；Then steam is passed through into fractionating column 3
Top, then enter return tank 10 through condensing unit and flowed back so that product after being flowed back forms solid and gaseous state
Object；Wherein, solid is fed back in fractionating column 3 by reflux pump 11 and carries out secondary treatment, and gaseous state object is conveyed by rear pump 12
It is allocated into distribution platform 13；Then gaseous state object is respectively allocated to extraction-container 14 by distribution platform 13 with different temperatures, gone
Low-boiling-point substance slot 15, the dichloroethylene basin 16(rate of recovery reach 95% or more) and the trichloroethanes basin 17(rate of recovery reach 95% with
On) condensed, stored；The bottoms of low boiling processing kettle 1 are finally delivered to bottoms pans 5 by column bottoms pump 4
In stored.By above-mentioned a series of processing can effectively by the main component in TCE by-product low-boiling-point substance effectively
It separates, realizes classified storage, a large amount of economic benefit can not only be generated, while also bringing to environment and greatly protecting
Shield.
In the present invention, the specific heating method of low boiling processing kettle 1 can be any conventional heating in this field
Mode directly can carry out open firing to low boiling processing kettle 1, can also be heated in other way, such as oil bath or
Person's water-bath, in order to improve the stability of the temperature in low boiling processing kettle 1, it is preferable that the outer cover that low boiling handles kettle 1 is equipped with kettle set
2, kettle set 2 is connected with steam；It can make that there is stable temperature in low boiling processing kettle 1 using the relatively stable temperature of steam in this way
Degree.
Meanwhile condensing unit can be single condensing mode, can also carry out in such a way that multistep is cooling, in order into
Row is sufficiently cool, it is preferable that condensing unit includes full cooler 6 and tail condenser 7；One end of full cooler 6 and the top of fractionating column 3
It is connected, the other end is connected with the top of return tank 10；One end of tail condenser 7 is connected with the side wall of the upper end of fractionating column 3,
The other end is connected with the top of return tank 10.It can be effectively realized as a result, by the steaming of the different location at the top of fractionating column 3
Vapour is condensed, and what full cooler 6 condensed is the lower steam of boiling point, and what tail condenser 7 condensed is the higher steam of boiling point.
Since the ingredient in the higher steam of boiling point is complex, efficiently separated to further realize, it is preferable that tail
One end of condenser 7 also passes through separator 8 and is connected with surge tank 9；It in this way can be by separator 8 and surge tank 9 to this kind of steaming
Vapour realizes further separation and storage.
Invention further provides a kind of separation methods of TCE by-product low-boiling-point substance, and the separation method is in above-mentioned separation
It is carried out in device；The separation method includes:
1) by TCE by-product low-boiling-point substance be placed in low boiling processing kettle 1 in be treated with heat such that steam by enter fractionating column 3
In be fractionated；
2) top that steam is passed through to fractionating column 3, then enters return tank 10 through condensing unit and is flowed back so that being returned
Product after stream forms solid and gaseous state object；Wherein, solid is fed back in fractionating column 3 by reflux pump 11 and carries out secondary place
Reason, gaseous state object are delivered in distribution platform 13 by rear pump 12 and are allocated；
3) gaseous state object is respectively allocated to extraction-container 14 by distribution platform 13 with different temperatures, removes low-boiling-point substance slot 15, dichloro
Ethylene basin 16 and trichloroethanes basin 17 are condensed, are stored；
4) bottoms of low boiling processing kettle 1 are delivered in bottoms pans 5 by column bottoms pump 4 and are stored.
In above-mentioned separation method, in order to which the dichloroethylene in TCE by-product low-boiling-point substance is separated to dichloro as much as possible
In ethylene basin 16, it is preferable that the temperature into the gaseous state object in dichloroethylene basin 16 is 31.4-31.8 DEG C.
Similarly, in order to the trichloroethanes in TCE by-product low-boiling-point substance is separated to trichloroethanes basin 17 as much as possible
In, it is preferable that the temperature into the gaseous state object in trichloroethanes basin 17 is 113.3-113.7 DEG C.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (4)
1. a kind of separator of TCE by-product low-boiling-point substance, which is characterized in that the separator includes for holding TCE by-product
The low boiling of low-boiling-point substance handles kettle (1) and is set to the fractionating column (3) at the top of low boiling processing kettle (1)；At the low boiling
The bottom of reason kettle (1) is connected by column bottoms pump (4) with bottoms pans (5)；Pass through at the top of low boiling processing kettle (1)
Condensing unit is connected with return tank (10), and the bottom of return tank (10) successively with reflux pump (11), rear pump (12)
One end is connected；Wherein, the other end of the reflux pump (11) is connected with the fractionating column (3), the rear pump (12)
The other end is connected with distribution platform (13)；And the distribution platform (13) separately with extraction-container (14), remove low-boiling-point substance slot
(15), dichloroethylene basin (16) is connected with trichloroethanes basin (17)；The outer cover of low boiling processing kettle (1) is equipped with kettle
It covers (2), the kettle set (2) is connected with steam；The condensing unit includes full cooler (6) and tail condenser (7)；The full cooler (6)
One end and the fractionating column (3) at the top of be connected, be connected at the top of the other end and the return tank (10)；The tail is solidifying
One end of device (7) is connected with the side wall of the upper end of the fractionating column (3), and the other end is connected with the top of the return tank (10)
It is logical；One end of the tail condenser (7) also passes through separator (8) and is connected with surge tank (9).
2. a kind of separation method of TCE by-product low-boiling-point substance, which is characterized in that the separation method is as described in claim 1
It is carried out in separator；The separation method includes:
1) by TCE by-product low-boiling-point substance be placed in low boiling processing kettle (1) in be treated with heat such that steam by enter fractionating column (3)
In be fractionated；
2) top that the steam is passed through to the fractionating column (3), then enters return tank (10) through condensing unit and flows back
So that the product after reflux forms solid and gaseous state object；Wherein, the solid is fed back to fractionation by reflux pump (11)
Secondary treatment is carried out in tower (3), the gaseous state object is delivered in the distribution platform (13) by rear pump (12) and is allocated；
3) the gaseous state object is respectively allocated to extraction-container (14) by the distribution platform (13) with different temperatures, removes low-boiling-point substance slot
(15), dichloroethylene basin (16) and trichloroethanes basin (17) are condensed, are stored；
4) bottoms of low boiling processing kettle (1) are delivered in bottoms pans (5) by column bottoms pump (4) and are carried out
Storage.
3. separation method according to claim 2, wherein enter the gaseous state object in the dichloroethylene basin (16)
Temperature be 31.4-31.8 DEG C.
4. separation method according to claim 2, wherein enter the gaseous state object in the trichloroethanes basin (17)
Temperature be 113.3-113.7 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346370.XA CN105859511B (en) | 2016-05-24 | 2016-05-24 | The separator and separation method of TCE by-product low-boiling-point substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346370.XA CN105859511B (en) | 2016-05-24 | 2016-05-24 | The separator and separation method of TCE by-product low-boiling-point substance |
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| CN105859511A CN105859511A (en) | 2016-08-17 |
| CN105859511B true CN105859511B (en) | 2019-01-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353289A (en) * | 2008-08-19 | 2009-01-28 | 何勇志 | Method for extracting trans-dichloroethylene from low-boiling residue of ethinyltrichloride production by gas-phase catalytic process |
| CN201762266U (en) * | 2010-06-01 | 2011-03-16 | 滨化集团股份有限公司 | Trichloroethylene industrialized production device |
| CN102079687A (en) * | 2010-12-17 | 2011-06-01 | 山东新龙集团聚氯乙烯有限公司 | Recycling method of residual liquor in production of trichloroethylene |
| CN102775269A (en) * | 2012-07-13 | 2012-11-14 | 中国石油集团东北炼化工程有限公司葫芦岛设计院 | Trichloroethylene gas phase catalysis production method |
| CN103785191A (en) * | 2014-01-17 | 2014-05-14 | 新疆中泰化学股份有限公司 | Vinyl chloride high-boiling residue rectification device and vinyl chloride high-boiling residue rectification separation method |
-
2016
- 2016-05-24 CN CN201610346370.XA patent/CN105859511B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353289A (en) * | 2008-08-19 | 2009-01-28 | 何勇志 | Method for extracting trans-dichloroethylene from low-boiling residue of ethinyltrichloride production by gas-phase catalytic process |
| CN201762266U (en) * | 2010-06-01 | 2011-03-16 | 滨化集团股份有限公司 | Trichloroethylene industrialized production device |
| CN102079687A (en) * | 2010-12-17 | 2011-06-01 | 山东新龙集团聚氯乙烯有限公司 | Recycling method of residual liquor in production of trichloroethylene |
| CN102775269A (en) * | 2012-07-13 | 2012-11-14 | 中国石油集团东北炼化工程有限公司葫芦岛设计院 | Trichloroethylene gas phase catalysis production method |
| CN103785191A (en) * | 2014-01-17 | 2014-05-14 | 新疆中泰化学股份有限公司 | Vinyl chloride high-boiling residue rectification device and vinyl chloride high-boiling residue rectification separation method |
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| CN105859511A (en) | 2016-08-17 |
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