CN202724720U - Device for recycling tert-butyl alcohol - Google Patents
Device for recycling tert-butyl alcohol Download PDFInfo
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- CN202724720U CN202724720U CN201220459555.9U CN201220459555U CN202724720U CN 202724720 U CN202724720 U CN 202724720U CN 201220459555 U CN201220459555 U CN 201220459555U CN 202724720 U CN202724720 U CN 202724720U
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- butyl alcohol
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Abstract
The utility model relates to a device for recycling tert-butyl alcohol. The device is characterized by comprising a first-effect evaporator, wherein the bottom of the first-effect evaporator is connected with a separator, the bottom of the separator is connected with the top of a secondary-effect evaporator, the bottom of the secondary-effect evaporator is connected with a secondary-effect separator, the bottom of the secondary-effect separator is connected with the top of a triple-effect evaporator, and the bottom of the triple-effect evaporator is joined with a triple-effect separator which is connected with a cooler. The device adopts an energy gradient utilization manner, the tert-butyl alcohol which is vaporized through a prestage falling-film evaporator is used as a heat source of a next-stage evaporator, a great amount of steam which is vaporized through the first-stage falling-film evaporator is mechanically compressed so as to raise the temperature and is used as a heat source of the first-stage falling-film evaporator, so that energy is fully utilized, and the device is particularly suitable for recycling a large amount of the tert-butyl alcohol; and the energy consumption of a system is low, the product quality is good, and the system operates stably and reliably.
Description
Technical field
The utility model relates to a kind of device for tert-butyl alcohol recovery.
Background technology
In order to improve the dissolubility of cyclohexanone oxime, in the reaction system, add solvent tertiary butanol, make the oxime of generation in the catalyst duct, be diffused into main body as early as possible, avoid being deposited in catalyst surface or the duct, cause catalysqt deactivation.
After filtering out catalyst, the tert-butyl alcohol as solvent is separated with cyclohexanone oxime, water, this does not change the tert-butyl alcohol in reaction system, for the recycling tert-butyl alcohol, reduce simultaneously the content of the tert-butyl alcohol in oxime, avoid affecting the quality of cyclohexanone oxime, must from the mixed solution of the tert-butyl alcohol, cyclohexanone oxime, water, separate the tert-butyl alcohol
Boiling point is 82.42 ℃ under the normal pressure of the tert-butyl alcohol, differs larger with the boiling point of cyclohexanone oxime, water, therefore can utilize the different separating tert-butanols of realizing of the relative boiling point of each component, separates and adopts decompression separation; The quantity of steam size has determined the quality of separating effect in the separation process, and quantity of steam is excessive, and large water gaging is distilled out of with the tert-butyl alcohol, and bottom discharge cyclohexanone oxime concentration of aqueous solution is too high, easily causes stifled tower plugging, and band water is many in the tert-butyl alcohol simultaneously; Quantity of steam is too small, and the tert-butyl alcohol separates unclean, affects the consumption of the tert-butyl alcohol.
Condensed t-butanol solution part adds the separator top as refluxing, and on sieve plate the tert-butyl alcohol steam that rises is washed, and purpose is to guarantee not to be with oxime in the tert-butyl alcohol steam, and capacity of returns is too small, and separating effect is bad, carries oxime in the tert-butyl alcohol secretly; Capacity of returns is excessive, and steam consumption is high.
Summary of the invention
The purpose of this utility model is to provide a kind of device for tert-butyl alcohol recovery; This installs cascaded utilization of energy, the tert-butyl alcohol steam that first order falling film evaporator is evaporated heats up by mechanical compress, as evaporimeter thermal source at the corresponding levels, second level falling film evaporator adopts live steam as thermal source, and the tert-butyl alcohol steam that the second level is evaporated is as the thermal source of third level falling film evaporator, and energy takes full advantage of, being specially adapted to the large tert-butyl alcohol for the treatment of capacity reclaims, this system energy consumption is low, good product quality, and system operates steadily reliably.
The technical solution of the utility model is: a kind of device for tert-butyl alcohol recovery, it is characterized in that: comprise 1st effective evaporator, described 1st effective evaporator bottom links with separator, described separator bottom links with the 2nd effect evaporator top, described 2nd effect evaporator bottom links with two effect separators, described two effect separator bottoms link with the triple effect evaporator top, and described triple effect evaporator bottom links with the triple effect separator, and described triple effect separator and a condenser link; Described separator top links through sieve plate and the first gas phase pipeline, described the first gas phase pipeline and 2nd effect evaporator top link, described the first gas phase pipeline also links through an air blast and 1st effective evaporator top, described 1st effective evaporator bottom and the first surge tank link, the described first surge tank port of export links through the first pipeline and separator top, and described the first pipeline also is connected with discharge pipe; Described two effect separator tops link through sieve plate and the second gas phase pipeline, described the second gas phase pipeline and triple effect evaporator top link, described 2nd effect evaporator bottom and the second surge tank link, the described second surge tank port of export links through second pipe and separator top, and described second pipe also is connected with discharge pipe.
Further, be provided with the first centrifugal pump on described the first pipeline.
Further, be provided with the second centrifugal pump on the described second pipe.
Further, be provided with first pump housing between described separator and 2nd effect evaporator.
Further, be provided with second pump housing between described two effect separators and triple effect evaporator.
Further, described 1st effective evaporator, 2nd effect evaporator and triple effect evaporator are the perpendicular shell-and-tube type falling film evaporator of establishing.
The utility model has the advantage of:
1, evaporation operates under vacuum condition, and oxime water high-temperature residence time in evaporimeter is short, can avoid oxime at high temperature to be hydrolyzed into cyclohexanone, good product quality.
2, a large amount of steam of producing of 1st effective evaporator improve after the temperature as the personnel of self by compression, and the energy utilization is abundant, adopts simultaneously the triple effect falling film evaporation, and energy consumption is very low;
3, treating capacity is large, need concentrated liquid to enter falling film evaporator heater top, forming film along the heating tube inwall flows downward, in this process since the pipe outside heating, the intraluminal fluid film comes to life and the part evaporation, and steam constantly generates in the pipe, and the steam zone hydrodynamic film that flows downward makes it downward motion to be accelerated, disengagement area is very large in falling film evaporator, so system throughput is very large.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
The specific embodiment
For above-mentioned feature and advantage of the present utility model can be become apparent, embodiment cited below particularly, and cooperation accompanying drawing be described in detail below, but the utility model are not limited to this.
With reference to legend, a kind of device for tert-butyl alcohol recovery, it is characterized in that: comprise 1st effective evaporator 2, described 1st effective evaporator bottom links with separator 1, described separator bottom links with 2nd effect evaporator 6 tops, and described 2nd effect evaporator bottom links with two effect separators 7, and described two effect separator bottoms link with triple effect evaporator 8 tops, described triple effect evaporator bottom links with triple effect separator 12, and described triple effect separator and a condenser 9 link; Described separator top links through sieve plate and the first gas phase pipeline 10, described the first gas phase pipeline with link through an air blast 5 and 1st effective evaporator top, described 1st effective evaporator bottom and the first surge tank 4 link, the described first surge tank port of export links with separator top through the first pipeline 17, and described the first pipeline also is connected with discharge pipe 19; Described two effect separator tops link through sieve plate and the second gas phase pipeline 11, described the second gas phase pipeline and triple effect evaporator top link, described 2nd effect evaporator bottom and the second surge tank 14 link, the described second surge tank port of export links through second pipe 18 and separator top, and described second pipe also is connected with discharge pipe 20.
Be provided with the first centrifugal pump 3 on described the first pipeline.
Be provided with the second centrifugal pump 15 on the described second pipe.
Be provided with first pump housing 16 between described separator and 2nd effect evaporator.
Be provided with second pump housing 13 between described two effect separators and triple effect evaporator.
Described 1st effective evaporator, 2nd effect evaporator and triple effect evaporator are the perpendicular shell-and-tube type falling film evaporator of establishing.
In the utility model: three vertically arranged shell-and-tube type falling film evaporators are installed, main body as tert-butyl alcohol retracting device, as the thermal source of 1st effective evaporator, the steam that 2nd effect evaporator produces is as the thermal source of triple effect evaporator after the machinery pressurization heats up for the steam that 1st effective evaporator produces; Be used as the energy of self for the steam that an effect is produced, must improve the temperature of tert-butyl alcohol steam, this device is provided with the multistage centrifugal air-blaster, through the compression of air blast, the temperature of tert-butyl alcohol steam improves approximately 5～15 ℃, satisfies the requirement as the 1st effective evaporator thermal source; The tert-butyl alcohol that one effect falling film evaporator condensation is got off enters surge tank, and a part is delivered to an effect separator top as backflow by pump, the cyclohexanone oxime of carrying secretly in the flush away gas; Be pumped to two effect falling film evaporator top material entrances from the cyclohexanone oxime aqueous solution of 1st effective evaporator bottom discharge.Solution heats in falling film evaporator, evaporates, and separates in separator, and the tert-butyl alcohol liquid part of falling film evaporator condensation is sent to the cyclohexanone oxime of carrying secretly in the flush away gas of separator top as phegma; Be pumped to triple effect falling film evaporator top material entrance from cyclohexanone oxime, the aqueous solution of 2nd effect evaporator bottom discharge.Solution heats in falling film evaporator, evaporates, and separates in separator; Above-mentioned tert-butyl alcohol retracting device arranges the triple effect condenser, is recycled water cooling after the tert-butyl alcohol steam that the triple effect evaporator separator produces enters the triple effect condenser, and condensate liquid reclaims, and gas phase links to each other with the Water-ring vacuum pump intake.Water ring vacuum pump is used for producing vacuum in evaporimeter.
From the film system come moisture, the tert-butyl alcohol mixed solution of oxime enters an effect falling film evaporator top, pass through falling film evaporator, in separator, separate, bottom liquid enters the import of two effect falling film evaporators, which floor sieve plate is the separator top gas rise through, after the phegma washing, enter top gas phase pipeline, a part is through the multistage blowers compression, temperature increase, enter an effect falling film evaporator as heating steam, in an effect falling film evaporator, with the liquid heat exchange that enters, enter surge tank after the condensation, a buffering pot liquid part is delivered to the separator top by centrifugal pump and refluxes, and all the other whole tert-butyl alcohol liquid pumpings are to system; Enter the liquid of 2nd effect evaporator from an effect falling film evaporator through entering two effect separators behind the evaporimeter, bottom liquid enters the triple effect evaporator top, and which floor sieve plate the gas at two effect separator tops rises through, enters top gas phase pipeline after the phegma washing; The liquid that 1st effective evaporator is come in 2nd effect evaporator with the live steam heat exchange, enter surge tank after the condensation and deliver to condensation water recovery system; The liquid that 2nd effect evaporator is come enters the triple effect separator behind the triple effect falling film evaporator, the gas of separating enters the triple effect condenser, through condensed tert-butyl alcohol liquid to system, t butanol content is sent into washing workshop section less than 0.05% (wt) in the residue concentrate of triple effect falling film evaporator bottom.Finish the recovery of the tert-butyl alcohol by the triple effect falling film evaporation.
This concentration technique adopts the triple effect falling film evaporator as main evaporation equipment, and minutes three grades evaporate with cyclohexanone oxime the tert-butyl alcohol and to separate.T butanol content is sent into cyclohexanone oxime washing workshop section less than 0.05% (wt) in the residue concentrate of triple effect evaporator bottom; The tert-butyl alcohol of condensation send with reaction system to recycle in one effect, two effects, triple effect evaporator, the triple effect condenser.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. one kind is used for the device that the tert-butyl alcohol reclaims, it is characterized in that: comprise 1st effective evaporator, described 1st effective evaporator bottom links with separator, described separator bottom links with the 2nd effect evaporator top, described 2nd effect evaporator bottom links with two effect separators, described two effect separator bottoms link with the triple effect evaporator top, and described triple effect evaporator bottom links with the triple effect separator, and described triple effect separator and a condenser link; Described separator top links through sieve plate and the first gas phase pipeline, described the first gas phase pipeline and 2nd effect evaporator top link, described the first gas phase pipeline also links through an air blast and 1st effective evaporator top, described 1st effective evaporator bottom and the first surge tank link, the described first surge tank port of export links through the first pipeline and separator top, and described the first pipeline also is connected with discharge pipe; Described two effect separator tops link through sieve plate and the second gas phase pipeline, described the second gas phase pipeline and triple effect evaporator top link, described 2nd effect evaporator bottom and the second surge tank link, the described second surge tank port of export links through second pipe and separator top, and described second pipe also is connected with discharge pipe.
2. a kind of device for tert-butyl alcohol recovery according to claim 1 is characterized in that: be provided with the first centrifugal pump on described the first pipeline.
3. a kind of device for tert-butyl alcohol recovery according to claim 1 is characterized in that: be provided with the second centrifugal pump on the described second pipe.
4. a kind of device for tert-butyl alcohol recovery according to claim 1 is characterized in that: be provided with first pump housing between described separator and 2nd effect evaporator.
5. a kind of device for tert-butyl alcohol recovery according to claim 1 is characterized in that: be provided with second pump housing between described two effect separators and triple effect evaporator.
6. a kind of device that reclaims for the tert-butyl alcohol according to claim 1, it is characterized in that: described 1st effective evaporator, 2nd effect evaporator and triple effect evaporator are for erecting the shell-and-tube type falling film evaporator of establishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220459555.9U CN202724720U (en) | 2012-09-11 | 2012-09-11 | Device for recycling tert-butyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220459555.9U CN202724720U (en) | 2012-09-11 | 2012-09-11 | Device for recycling tert-butyl alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202724720U true CN202724720U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220459555.9U Expired - Lifetime CN202724720U (en) | 2012-09-11 | 2012-09-11 | Device for recycling tert-butyl alcohol |
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| Country | Link |
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| CN (1) | CN202724720U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214346A (en) * | 2013-04-12 | 2013-07-24 | 湖南百利工程科技股份有限公司 | Recovering process of solvent tertiary butanol in production process of ammoximation |
| CN105126374A (en) * | 2015-06-29 | 2015-12-09 | 天津市天地创智科技发展有限公司 | tert-Butanol-water-cyclohexanone oxime differential-pressure rectification system |
| CN113198194A (en) * | 2021-05-11 | 2021-08-03 | 江苏峰业科技环保集团股份有限公司 | Energy-saving environment-friendly triple-effect evaporator |
-
2012
- 2012-09-11 CN CN201220459555.9U patent/CN202724720U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214346A (en) * | 2013-04-12 | 2013-07-24 | 湖南百利工程科技股份有限公司 | Recovering process of solvent tertiary butanol in production process of ammoximation |
| CN105126374A (en) * | 2015-06-29 | 2015-12-09 | 天津市天地创智科技发展有限公司 | tert-Butanol-water-cyclohexanone oxime differential-pressure rectification system |
| CN113198194A (en) * | 2021-05-11 | 2021-08-03 | 江苏峰业科技环保集团股份有限公司 | Energy-saving environment-friendly triple-effect evaporator |
| CN113198194B (en) * | 2021-05-11 | 2022-09-09 | 江苏峰业环境科技集团股份有限公司 | Energy-saving environment-friendly triple-effect evaporator |
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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 |
Effective date of registration: 20170424 Address after: Shimen Ao Dong Zhuang Industrial Park town of Xiuyu District 351156 Fujian city of Putian Province Patentee after: FUJIAN EVERSUN TECHNOLOGY Co.,Ltd. Address before: 350206 Fujian city of Fuzhou province Changle City Airport Industrial Zone Pengcheng Road No. 28 Patentee before: Fujian Jinjiang Petrochemical Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
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| CX01 | Expiry of patent term |