CN109173318A - Energy-saving solvent high-efficiency separate combination type evaporator - Google Patents
Energy-saving solvent high-efficiency separate combination type evaporator Download PDFInfo
- Publication number
- CN109173318A CN109173318A CN201811269208.8A CN201811269208A CN109173318A CN 109173318 A CN109173318 A CN 109173318A CN 201811269208 A CN201811269208 A CN 201811269208A CN 109173318 A CN109173318 A CN 109173318A
- Authority
- CN
- China
- Prior art keywords
- energy
- bubbling
- wiped film
- inert gas
- evaporator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/148—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step in combination with at least one evaporator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/38—Steam distillation
Abstract
The invention discloses a kind of energy-saving solvent high-efficiency separate combination type evaporators, including evaporator body, the evaporator body includes wiped film vaporization section, the lower end of wiped film vaporization section connects with packing section, bubbling segment is set below packing section, evaporator body bottom setting recombination sub-export, wiped film vaporization section top are arranged solvent inlet, secondary steam, inert gas outlet are arranged above solvent inlet；Setting is passed through the bubbling device of inert gas in the bubbling segment.The present invention is combined using film-type evaporation and stripping, need to only be heated low boiling point component therein and be vaporized, and energy consumption substantially reduces, and when input concentration is 50%, energy consumption only has 1/3 or so of rectifier unit, and tower bottom discharging content is higher.
Description
Technical field
The present invention relates to a kind of solvent evaporators.
Background technique
It is all rectifying column that solvent, which separates common equipment, in chemical production process, since distillation process need to add mixed solvent
Separation is realized after hot vapour in rectifying column, the latent heat of vaporization of solvent is offset in heating vaporescence, needs to consume big
The thermal energy of amount, especially when separation requirement is higher, it is often necessary to be just able to achieve using big reflux ratio, the energy of consumption is bigger.
Summary of the invention
The purpose of the present invention is to provide a kind of energy-saving solvent high-efficiencies that low energy consumption, tower bottom discharging content is high to separate combination
Formula evaporator.
The technical solution of the invention is as follows:
A kind of energy-saving solvent high-efficiency separate combination type evaporator, including evaporator body, it is characterized in that: the evaporator body
Including wiped film vaporization section, the lower end of wiped film vaporization section connects with packing section, and bubbling segment, evaporator body bottom are arranged below packing section
Portion's setting recombination sub-export, wiped film vaporization section top are arranged solvent inlet, secondary steam, inert gas are arranged above solvent inlet
Outlet；Setting is passed through the bubbling device of inert gas in the bubbling segment.
The bubbling device enters pipe with the gas for being passed through inert gas and connect, gas enter pipe also successively with lower part second level
Condenser, lower part first-stage condenser, vacuum pump, vacuum buffer tank connection；Secondary steam, inert gas outlet successively with top one
Grade condenser, the connection of top secondary condenser；Top secondary condenser gas vent is also connect with vacuum buffer tank.
The present invention is combined using film-type evaporation and stripping, need to only be heated low boiling point component therein and be vaporized, energy
Consumption substantially reduces, and when input concentration is 50%, energy consumption only has 1/3 or so of rectifier unit, and tower bottom discharging content is higher.
Equipment is constituted by including film evaporator section, filler stripping section, being bubbled three sections of preheating section.It includes film evaporator section and includes film using commercially available
Evaporation structure form, different mixed solvents have different separative efficiencies, when vacuum degree is 500 ~ 2000Pa, general bottom
The content that discharges will such as further increase discharging content, vacuum degree must reach 50 ~ 100Pa, at this time vacuum system between 97 ~ 99%
The energy consumption of system is by substantial increase.The design reduces low boiling point working medium steam due to introducing nitrogen or other inert gases
Intrinsic standoff ratio, vacuum degree only need to control in 1000 ~ 10000 Pa, include film evaporation bottom discharge content at this time about 94 ~ 96%, this
Shi Gaowen (being supersolubility temperature relative to tower top low boiling point working medium) solvent is directly entered filler stripping section supersaturation stripping and (blows
It is de-), since the intrinsic standoff ratio of nitrogen or the addition tower top low boiling point working medium of other inert gases is greatly lowered, realize solvent
Secondary separation, high boiling solvent content is entered back into and is bubbled stripping section and realizes secondary stripping and right up to 99% or more in tower at this time
Nitrogen is preheated, at this time out tower height boiling point solvent content up to 99.5 ~ 99.8% or more.And the low boiling point working medium of tower top steams
The mixture of vapour and nitrogen or other inert gases is by entering vacuum (generally using room temperature and low temperature B-grade condensation) after condensation
Pump, after being handled again by condensation or absorption after pressure rise after vacuum pump, low boiling point is situated between in nitrogen or other inert gases
When matter content does not influence tower height boiling point solvent content out, nitrogen or other inert gases be can be recycled.
The features of the present invention: film evaporator will be included and combined with stripping process, utilization rate of equipment and installations is improved, effectively simplify
Process flow.By the way that nitrogen or other inert gases is added, so that the gas of low boiling point working medium steam divides under low vacuum state
Pressure is lower, achievees the effect that conventional high vacuum state, can greatly save vacuum pump investment and operating cost.Film evaporator work will be included
The high-temp liquid generated during making, supersaturated stripping is realized in filler stripping section, effectively improves low boiling point working medium
Molecular diffusion rates.Being bubbled preheating section realizes the dual function that stripping and energy regenerating recycle, while also using vacuum
Effective vacuum degree (lift) of pump overcomes the air resistance of bubbling.Recycling for nitrogen or other inert gases is realized,
Production cost is reduced, and eliminates VOC emission.Operating condition is more mild compared with rectifying (all operating under negative pressure),
Also safer, complicated control means are not needed yet, energy consumption is greatly lowered.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of one embodiment of the invention.
Specific embodiment
A kind of energy-saving solvent high-efficiency separate combination type evaporator, including evaporator body 1, the evaporator body include
The lower end of wiped film vaporization section 2, wiped film vaporization section connects with packing section 3, and bubbling segment 4, evaporator body bottom are arranged below packing section
Portion's setting recombination sub-export 5, wiped film vaporization section top are arranged solvent inlet 6, secondary steam, indifferent gas are arranged above solvent inlet
Body outlet 7；The bubbling device 8(that setting is passed through inert gas in the bubbling segment uses the bubbling device knot of prior art maturation
Configuration formula).
The bubbling device enters pipe 9 with the gas for being passed through inert gas and connect, gas enter pipe also successively with lower part two
Grade condenser 10, lower part first-stage condenser 11, vacuum pump 12, vacuum buffer tank 13 connect；Secondary steam, inert gas outlet according to
It is secondary to be connect with top first-stage condenser 14, top secondary condenser 15；Top secondary condenser gas vent also with vacuum buffer
Tank 13 connects.
Claims (2)
1. a kind of energy-saving solvent high-efficiency separate combination type evaporator, including evaporator body, it is characterized in that: the evaporator sheet
Body includes wiped film vaporization section, and the lower end of wiped film vaporization section connects with packing section, and bubbling segment, evaporator body are arranged below packing section
Bottom setting recombination sub-export, wiped film vaporization section top are arranged solvent inlet, secondary steam, indifferent gas are arranged above solvent inlet
Body outlet；Setting is passed through the bubbling device of inert gas in the bubbling segment.
2. energy-saving solvent high-efficiency separate combination type evaporator according to claim 1, it is characterized in that: the bubbling device
Enter pipe with the gas for being passed through inert gas to connect, gas enters pipe and also successively condenses with lower part secondary condenser, lower departmental level
Device, vacuum pump, vacuum buffer tank connection；Secondary steam, inert gas outlet are successively cold with top first-stage condenser, top second level
Condenser connection；Top secondary condenser gas vent is also connect with vacuum buffer tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811269208.8A CN109173318A (en) | 2018-10-29 | 2018-10-29 | Energy-saving solvent high-efficiency separate combination type evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811269208.8A CN109173318A (en) | 2018-10-29 | 2018-10-29 | Energy-saving solvent high-efficiency separate combination type evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109173318A true CN109173318A (en) | 2019-01-11 |
Family
ID=64944263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811269208.8A Pending CN109173318A (en) | 2018-10-29 | 2018-10-29 | Energy-saving solvent high-efficiency separate combination type evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109173318A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915567A (en) * | 2021-01-28 | 2021-06-08 | 浙江毅聚新材料有限公司 | Method and system for separating and recovering mixed liquid of white oil, dichloromethane and water |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB702823A (en) * | 1949-09-05 | 1954-01-27 | Apv Co Ltd | Improvements in or relating to continuous fractional distillation |
| US5061349A (en) * | 1988-12-20 | 1991-10-29 | Kueppenbender Herbert | Method of isolating trioxane from aqueous trioxane solutions by distillative separation |
| CN102464792A (en) * | 2010-11-18 | 2012-05-23 | 中国石油化工集团公司 | Method and device for reducing volatile matters of o-cresol-formaldehyde epoxy resin |
| CN104190105A (en) * | 2014-08-22 | 2014-12-10 | 天津奥展兴达化工技术有限公司 | Equipment and method for removing light components through inert gas circulation gas stripping |
| CN204865019U (en) * | 2015-08-20 | 2015-12-16 | 应城市武瀚有机材料有限公司 | Cinnamic acid takes off benzene device |
| CN107050903A (en) * | 2017-01-17 | 2017-08-18 | 吴剑 | A kind of continuous separating-purifying apparatus and method of behenamide |
| CN209173413U (en) * | 2018-10-29 | 2019-07-30 | 江苏九九久科技有限公司 | Energy-saving solvent high-efficiency separate combination type evaporator |
-
2018
- 2018-10-29 CN CN201811269208.8A patent/CN109173318A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB702823A (en) * | 1949-09-05 | 1954-01-27 | Apv Co Ltd | Improvements in or relating to continuous fractional distillation |
| US5061349A (en) * | 1988-12-20 | 1991-10-29 | Kueppenbender Herbert | Method of isolating trioxane from aqueous trioxane solutions by distillative separation |
| CN102464792A (en) * | 2010-11-18 | 2012-05-23 | 中国石油化工集团公司 | Method and device for reducing volatile matters of o-cresol-formaldehyde epoxy resin |
| CN104190105A (en) * | 2014-08-22 | 2014-12-10 | 天津奥展兴达化工技术有限公司 | Equipment and method for removing light components through inert gas circulation gas stripping |
| CN204865019U (en) * | 2015-08-20 | 2015-12-16 | 应城市武瀚有机材料有限公司 | Cinnamic acid takes off benzene device |
| CN107050903A (en) * | 2017-01-17 | 2017-08-18 | 吴剑 | A kind of continuous separating-purifying apparatus and method of behenamide |
| CN209173413U (en) * | 2018-10-29 | 2019-07-30 | 江苏九九久科技有限公司 | Energy-saving solvent high-efficiency separate combination type evaporator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915567A (en) * | 2021-01-28 | 2021-06-08 | 浙江毅聚新材料有限公司 | Method and system for separating and recovering mixed liquid of white oil, dichloromethane and water |
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