CN106310877A - High-efficiency energy-saving volatile-organic-solvent-containing tail gas recovery technique - Google Patents
High-efficiency energy-saving volatile-organic-solvent-containing tail gas recovery technique Download PDFInfo
- Publication number
- CN106310877A CN106310877A CN201610701447.0A CN201610701447A CN106310877A CN 106310877 A CN106310877 A CN 106310877A CN 201610701447 A CN201610701447 A CN 201610701447A CN 106310877 A CN106310877 A CN 106310877A
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- Prior art keywords
- solvent
- volatile organic
- energy
- organic solvent
- containing volatile
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1418—Recovery of products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/009—Collecting, removing and/or treatment of the condensate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a high-efficiency energy-saving volatile-organic-solvent-containing tail gas recovery technique which is used for recovering low-boiling-point organic solvents and tail gas by using a dry-type screw vacuum pump set and a multistage condensing recovery process. The volatile-organic-solvent-containing tail gas in a vacuum-pumping system in petrochemical industry production is condensed by a multistage winding-type condenser from an evacuation main line system and recovered into a pressure surge tank, and the residual gas is vacuumized and absorbed by the dry-type screw vacuum pump. The combination of the novel dry-type screw vacuum pump with the solvent recovery process enhances the recovery rate of the low-boiling-point solvents, reduces the organic exhaust emission, has the advantages of obvious energy-saving effect, high economy and high efficiency, can enhance the tail gas recovery rate by 20-35%, and obviously enhances the productivity due to the reinforcement of the technical process.
Description
Technical field
The invention belongs to the energy-saving and emission-reduction field during petrochemical industry produces, be specifically related to a kind of energy-efficient to have containing volatility
The solvent recovery technology from vent gas of machine solvent.
Background technology
Dry screw vacuum pump is the sci-tech product that a kind of novel technology content is the highest, is to utilize a pair screw rod,
The air-breathing making synchronous high-speed reverse rotation in pump case and produce and the air-extractor of scavenging action.Dry screw vacuum pump can extract
Containing a large amount of water vapour and the gas occasion of a small amount of dust, end vacuum is higher, and power consumption is lower, has energy-conservation, freedom from repairs
Etc. advantage.It is oil sealing vacuum pump and the renewal product of water-jetting type vacuum pump.Dry screw vacuum pump is excellent due to it
Performance more, has become as the industry first-selection vacuum such as microelectronics, quasiconductor, pharmacy, Precision Machining at present in American-European and Japan and obtains
The equipment of obtaining.
During petrochemical industry produces, vacuumizing process (as vacuum filtration, vacuum drying, vacuum feeding, be concentrated in vacuo, high
Rectification under vacuum, vacuum suction etc.) in often have the tail gas containing volatile organic solvent, how to improve the tail containing volatile organic solvent
The response rate of gas, the discharge reducing organic solvent tail gas is the new problem of current energy-saving and emission-reduction area research.Application dry type screw rod
Vacuum pump group and high efficiente callback technique reclaim low boiling point organic solvent and tail gas can be achieved good results.
Summary of the invention
It is an object of the invention to provide a kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent.
Based on above-mentioned purpose, this invention takes following technical scheme:
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent, it is characterised in that the solvent of Chemical Manufacture and tail
Gas recovery process is applied dry screw vacuum pump group reclaim low boiling point solvent and tail gas；In Chemical Manufacture pumped vacuum systems
Tail gas containing volatile organic solvent, is condensed through multi-stage condensing device from offgas duct system, is recycled in pressure surge tank, surplus
Residual air body is absorbed by dry screw vacuum pump evacuation；
Above-mentioned multi-stage condensing device is two-stage, three grades, level Four, and condenser is wound form condenser；Outside condenser logical 7 DEG C of cold water or
Brine ice is lowered the temperature；
The above-mentioned a kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent, pressure surge tank is that stainless steel pressure delays
Rush tank, equipped with liquidometer；
The above-mentioned a kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent, it is characterised in that dry screw vacuum pump
Using Flame-Proof Three-Phase Induction Motors, the pump housing is passed through circulating water cooling, and recirculated water backwater installs water flow switch additional and joins with vacuum pump
Lock, forms internal water circulation cooling system, it is not necessary to the outside water replanishing device that adds water.
Dry screw vacuum pump using method is simple, quick, efficiently, energy-saving and environmental protection, freedom from repairs, exempt from operation, except saving energy
Outside source, substantial amounts of manpower and materials and maintenance cost are saved again.The present invention is Novel dry screw vacuum pump and solvent recovery work
The combination of skill, can improve the low boiling point solvent response rate, reduces organic exhaust gas discharge, and energy-saving effect is notable, economical, efficient, tail gas
The response rate can improve 20 ~ 35%, and reinforcement process process, significantly improves production capacity.
Detailed description of the invention
Below by way of specific embodiment, technical scheme is described in further detail, but the protection model of the present invention
Enclose and be not limited thereto.
Embodiment 1
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent,
Specifically comprise the following steps that
The solvent recovery process that petrochemical industry produces is applied dry screw vacuum pump group reclaim low boiling point solvent.Petrochemical industry
Produce the tail gas containing volatile organic solvent (such as dichloromethane) in pumped vacuum systems, twine through two-stage from air extraction ductwork
Wound condenser is condensed, logical brine ice cooling outside condenser, in solvent recovery to 500 L stainless steel pressure surge tanks, and residue
Gas is absorbed by dry screw vacuum pump (model) evacuation；The more common recovery process of the dichloromethane solvent response rate improves
20%。
Embodiment 2
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent,
Specifically comprise the following steps that
The solvent recovery technology from vent gas that petrochemical industry produces is applied dry screw vacuum pump group reclaim tail gas.Petrochemical industry produces and takes out
The tail gas containing volatile organic solvent (such as dichloromethane, methanol, ether etc.) in vacuum system, passes through from exhaust pipe system
Three grades of wound form condensers are condensed, and logical brine ice cooling outside condenser, solvent recovery is to 500 L stainless steel pressure surge tanks
In, residual gas is absorbed by dry screw vacuum pump (model) evacuation；The more common recovery process of exhaust emissions amount decreases
20%。
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to aforementioned reality
Executing example to be described in detail the present invention, for a person skilled in the art, it still can be to aforementioned each enforcement
Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. an energy-efficient solvent recovery technology from vent gas containing volatile organic solvent, it is characterised in that containing volatile organic solvent
Tail gas apply medium-sized VPS-P300, limiting pressure reaches the dry screw vacuum pump group of 26pa and multi-stage condensing recovery process back and forth
Receive low boiling point solvent and tail gas.
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent the most according to claim 1, its feature exists
The tail gas containing volatile organic solvent in Chemical Manufacture pumped vacuum systems, cold through multi-stage condensing device from offgas duct system
Solidifying, it is recycled in pressure surge tank, residue minimum gas is absorbed by dry screw vacuum pump evacuation.
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent the most according to claim 1, its feature exists
It is two-stage, three grades, level Four in multi-stage condensing device.
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent the most according to claim 1, its feature exists
It is wound form condenser in condenser.
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent the most according to claim 1, its feature exists
Logical 7 DEG C of cold water or brine ice cooling outside condenser.
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent the most according to claim 1, its feature exists
It is the stainless steel pressure surge tank equipped with liquidometer in pressure surge tank.
A kind of energy-efficient solvent recovery technology from vent gas containing volatile organic solvent the most according to claim 1, its feature exists
Using Flame-Proof Three-Phase Induction Motors in dry screw vacuum pump, the pump housing is passed through circulating water cooling, and recirculated water backwater installs water additional
Stream switch is interlocked with vacuum pump, forms internal water circulation cooling system, it is not necessary to the outside water replanishing device that adds water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701447.0A CN106310877A (en) | 2016-08-23 | 2016-08-23 | High-efficiency energy-saving volatile-organic-solvent-containing tail gas recovery technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701447.0A CN106310877A (en) | 2016-08-23 | 2016-08-23 | High-efficiency energy-saving volatile-organic-solvent-containing tail gas recovery technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106310877A true CN106310877A (en) | 2017-01-11 |
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ID=57742807
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|---|---|---|---|
| CN201610701447.0A Pending CN106310877A (en) | 2016-08-23 | 2016-08-23 | High-efficiency energy-saving volatile-organic-solvent-containing tail gas recovery technique |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893077A (en) * | 2017-04-13 | 2017-06-27 | 合肥科天水性科技有限责任公司 | A kind of aqueous polyurethane energy-conservation precipitation production equipment and process |
| CN107500504A (en) * | 2017-10-20 | 2017-12-22 | 河南红东方化工股份有限公司 | A kind of high-efficiency and continuous dries sludge technology |
| CN110801639A (en) * | 2019-11-11 | 2020-02-18 | 杭州快凯高效节能新技术有限公司 | Method for recovering carbon dioxide by multistage liquefaction and fractional refrigeration of industrial tail gas |
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| US5340444A (en) * | 1992-02-27 | 1994-08-23 | Peter W. D. Van Der Heijden Laborbedarf | Circulation cooler for vacuum distillation apparatus |
| CN101585755A (en) * | 2008-05-22 | 2009-11-25 | 马杰 | Method for recovering acetone from volatile mixed gas of solvent discharged from vacuum system |
| CN102120935A (en) * | 2011-01-10 | 2011-07-13 | 佛山汉维机电科技有限公司 | Method for recycling heptane and saxol from waste saxol containing heptane |
| CN102836565A (en) * | 2012-09-12 | 2012-12-26 | 河北工业大学 | Vacuum system solvent recovering method and device |
| CN104128065A (en) * | 2014-08-14 | 2014-11-05 | 中膜科技(苏州)有限公司 | Condensed oil gas membrane method oil gas recovery device |
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| CN204637921U (en) * | 2015-01-13 | 2015-09-16 | 天津奥展兴达化工技术有限公司 | A kind of energy-efficient purification apparatus containing volatile organic matter tail gas |
| CN205330979U (en) * | 2016-01-28 | 2016-06-22 | 江阴华西节能技术有限公司 | Dry -type vacuum unit |
-
2016
- 2016-08-23 CN CN201610701447.0A patent/CN106310877A/en active Pending
Patent Citations (9)
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| US5340444A (en) * | 1992-02-27 | 1994-08-23 | Peter W. D. Van Der Heijden Laborbedarf | Circulation cooler for vacuum distillation apparatus |
| CN101585755A (en) * | 2008-05-22 | 2009-11-25 | 马杰 | Method for recovering acetone from volatile mixed gas of solvent discharged from vacuum system |
| CN102120935A (en) * | 2011-01-10 | 2011-07-13 | 佛山汉维机电科技有限公司 | Method for recycling heptane and saxol from waste saxol containing heptane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893077A (en) * | 2017-04-13 | 2017-06-27 | 合肥科天水性科技有限责任公司 | A kind of aqueous polyurethane energy-conservation precipitation production equipment and process |
| CN107500504A (en) * | 2017-10-20 | 2017-12-22 | 河南红东方化工股份有限公司 | A kind of high-efficiency and continuous dries sludge technology |
| CN110801639A (en) * | 2019-11-11 | 2020-02-18 | 杭州快凯高效节能新技术有限公司 | Method for recovering carbon dioxide by multistage liquefaction and fractional refrigeration of industrial tail gas |
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Application publication date: 20170111 |