CN106542960A - A kind of method of liquid in removing methyl chloride gas - Google Patents
A kind of method of liquid in removing methyl chloride gas Download PDFInfo
- Publication number
- CN106542960A CN106542960A CN201610865913.9A CN201610865913A CN106542960A CN 106542960 A CN106542960 A CN 106542960A CN 201610865913 A CN201610865913 A CN 201610865913A CN 106542960 A CN106542960 A CN 106542960A
- Authority
- CN
- China
- Prior art keywords
- liquid
- chloride gas
- methyl chloride
- methyl
- cooled
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The method that the present invention discloses liquid in a kind of removing methyl chloride gas.Specifically, it is method for removing in methyl chloride gas the liquid such as contained saturation water, methyl alcohol.It is characterized in including successively：With compressor to methyl chloride gas supercharging, cooling, de- liquid for the first time is carried out；Supercharging, cooling are continued to the methyl chloride gas of first time de- liquid, second de- liquid is carried out；De- liquid is carried out to the methyl chloride gas for passing through second de- liquid with dehydrating agent, saturation water, the methyl alcohol for wherein remaining is removed；Methyl chloride gas to passing through second de- liquid are cooled down, etc. step.In this way, it is possible to decrease production cost, improve productivity effect.
Description
Technical field
The present invention relates to a kind of method for removing gas in liquid.Specifically, it is contained in methyl chloride gas for removing
The method of the liquid such as saturation water, methyl alcohol.
Background technology
Both know about in chemical field, it is just qualified that the water content of chloromethanes must be less than 00ppm.If chloromethanes
Water content more than 100ppm, it is just unqualified.Therefore, just chloromethanes must be dehydrated.Before the present invention makes, tradition
Method is all removing in chloromethanes the liquid such as contained saturation water, methyl alcohol using sulfuric acid.Although chloromethane can be removed using sulfuric acid
The liquid such as contained saturation water, methyl alcohol in alkane, but often one ton of methyl chloride gas of production just need the sulfuric acid for consuming 300kg or so, and produce
Raw concentration is 50% dilute sulfuric acid 600kg or so.And manufacturing enterprise must transfer to these dilute sulfuric acids with the list for processing qualification
Position is processed, and the standard according to 200 ~ 300 yuan per ton pays process processed in units expense.Chloromethane is removed due to using sulfuric acid
The liquid such as contained saturation water, methyl alcohol in alkane, it is difficult to avoid because of unexpected leakage of sulfuric acid and caused contingency generation so that raw
It is very dangerous during product.Due to needing a large amount of sulfuric acid in process of production, and payment processes expense is needed in processing procedure,
So that production cost is higher.Again due to needing by being processed with the unit for processing qualification, when process unit is because of disposal ability
When going wrong and cannot process in time, the enterprise for producing methyl chloride gas must just stop production so that the benefit of manufacturing enterprise is received
To the restriction for processing unit, it is difficult to ensure being normally carried out for production, productivity effect is low.
The content of the invention
The method that the problem to be solved in the present invention is to provide liquid in a kind of removing methyl chloride gas.In this way,
Production cost can be reduced, productivity effect is improved.
The invention solves the problems that the problems referred to above by technical scheme below realize：
In the removing methyl chloride gas of the present invention, the method characteristic of liquid is to comprise the following steps successively：
Methyl chloride gas are pressurized to into 2Kg with compressor first, and the methyl chloride gas after supercharging are cooled to into 9 ~ 11 DEG C, make chloromethane
The liquefaction such as contained saturation water, methyl alcohol in alkane gas separates out about 80% or so, carries out de- liquid for the first time；
Then, the methyl chloride gas for passing through de- liquid for the first time are continued to be pressurized to 6Kg, and the methyl chloride gas of 6Kg will be pressurized to
38 ~ 42 DEG C are cooled to, the saturation water that remains in making methyl chloride gas, methyl alcohol etc. continue liquefaction and separates out about 10% or so, carry out second
Secondary de- liquid；
Finally, de- liquid is carried out to the methyl chloride gas for passing through second de- liquid with dehydrating agent, removes saturation water, the first for wherein remaining
Alcohol, is cooled to less than 30 DEG C afterwards, obtains the chloromethanes that liquefies.
As can be seen from the above scheme, due to the liquid that in methyl chloride gas 90% or so is eliminated with supercharging cooling means first
Body, then remaining liquid (chloromethanes content is more than 99.9%) in methyl chloride gas has been sloughed with dehydrating agent, change background technology
Middle employing sulfuric acid carries out the conventional method of de- liquid, so as to save a large amount of sulfuric acid and processing cost.Due to not using sulfuric acid, it is to avoid
Because of unexpected leakage of sulfuric acid, caused contingency occurs so that in production process, security is greatly improved.With background skill
Art is compared due to without the de- liquid of sulfuric acid, being not required to process dilute sulfuric acid, is reduced investment, is reduced production cost.Further, since this
It is bright to use the de- liquid method of supercharging, it is to produce 5 water of maintaining normal supply during the slack season to be cooled down with handpiece Water Chilling Units, with the de- liquid of sulfuric acid used in background technology
Producing big calorimetric and need to carrying out being cooled to less than 0 degree by salt solution with freezing unit carries out cooling and compares, and it is less to consume electric energy, further
Reduce production cost.Again due to without sulfuric acid, adversely affecting to environment.
Specific embodiment
With reference to embodiments the present invention is described in further details：
Embodiment one
Methyl chloride gas are pressurized to into 2Kg with compressor first, and the methyl chloride gas after supercharging are cooled to into 9 DEG C, make chloromethanes
The liquefaction such as contained saturation water, methyl alcohol in gas separates out about 80% or so, carries out de- liquid for the first time.
Then, the methyl chloride gas for passing through de- liquid for the first time are continued to be pressurized to 6Kg, and the chloromethanes of 6Kg will be pressurized to
Gas is cooled to 42 DEG C, and the saturation water that remains in making methyl chloride gas, methyl alcohol etc. continue liquefaction and separates out about 10% or so, carries out the
Secondary de- liquid.
Finally, de- liquid is carried out to the methyl chloride gas for passing through second de- liquid with dehydrating agent, removes the saturation for wherein remaining
Water, methyl alcohol, and 29 DEG C are cooled to, obtain the chloromethanes that liquefies.
In the present embodiment, the dehydrating agent is the ethylene glycol SAS that sodium acetate content is 25 weight %.
Embodiment two
Methyl chloride gas are pressurized to into 2Kg with compressor first, and the methyl chloride gas after supercharging are cooled to into 10 DEG C, make chloromethanes
The liquefaction such as contained saturation water, methyl alcohol in gas separates out about 80% or so, carries out de- liquid for the first time.
Then, the methyl chloride gas for passing through de- liquid for the first time are continued to be pressurized to 6Kg, and the chloromethanes of 6Kg will be pressurized to
Gas is cooled to 40 DEG C, and the saturation water that remains in making methyl chloride gas, methyl alcohol etc. continue liquefaction and separates out about 10% or so, carries out the
Secondary de- liquid.
Finally, de- liquid is carried out to the methyl chloride gas for passing through second de- liquid with dehydrating agent, removes the saturation for wherein remaining
Water, methyl alcohol, and 27 DEG C are cooled to, obtain the chloromethanes that liquefies.
In the present embodiment, the dehydrating agent is the ethylene glycol SAS that sodium acetate content is 25 weight %.
Embodiment three
Methyl chloride gas are pressurized to into 2Kg with compressor first, and the methyl chloride gas after supercharging are cooled to into 11 DEG C, make chloromethanes
The liquefaction such as contained saturation water, methyl alcohol in gas separates out about 80% or so, carries out de- liquid for the first time.
Then, the methyl chloride gas for passing through de- liquid for the first time are continued to be pressurized to 6Kg, and the chloromethanes of 6Kg will be pressurized to
Gas is cooled to 38 DEG C, and the saturation water that remains in making methyl chloride gas, methyl alcohol etc. continue liquefaction and separates out about 10% or so, carries out the
Secondary de- liquid.
Finally, de- liquid is carried out to the methyl chloride gas for passing through second de- liquid with dehydrating agent, removes the saturation for wherein remaining
Water, methyl alcohol, and 28 DEG C are cooled to, obtain the chloromethanes that liquefies.
In the present embodiment, the dehydrating agent is the ethylene glycol SAS that sodium acetate content is 25 weight %.
Claims (2)
1. it is a kind of removing methyl chloride gas in liquid method, it is characterised in that comprise the following steps successively：
Methyl chloride gas are pressurized to into 2Kg with compressor first, and the methyl chloride gas after supercharging are cooled to into 9 ~ 11 DEG C, make chloromethane
The liquefaction such as contained saturation water, methyl alcohol in alkane gas separates out about 80% or so, carries out de- liquid for the first time；
Then, the methyl chloride gas for passing through de- liquid for the first time are continued to be pressurized to 6Kg, and the methyl chloride gas of 6Kg will be pressurized to
38 ~ 42 DEG C are cooled to, the saturation water that remains in making methyl chloride gas, methyl alcohol etc. continue liquefaction and separates out about 10% or so, carry out second
Secondary de- liquid；
Finally, de- liquid is carried out to the methyl chloride gas for passing through second de- liquid with dehydrating agent, removes saturation water, the first for wherein remaining
Alcohol, is cooled to less than 30 DEG C afterwards, obtains the chloromethanes that liquefies.
2. it is according to claim 1 removing methyl chloride gas in liquid method, it is characterised in that the dehydrating agent is vinegar
Sour sodium content is the ethylene glycol SAS of 25 weight %.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865913.9A CN106542960A (en) | 2016-09-30 | 2016-09-30 | A kind of method of liquid in removing methyl chloride gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865913.9A CN106542960A (en) | 2016-09-30 | 2016-09-30 | A kind of method of liquid in removing methyl chloride gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106542960A true CN106542960A (en) | 2017-03-29 |
Family
ID=58368132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610865913.9A Pending CN106542960A (en) | 2016-09-30 | 2016-09-30 | A kind of method of liquid in removing methyl chloride gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106542960A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089033A (en) * | 1989-11-07 | 1992-02-18 | Membrane Technology & Research, Inc. | Process for removing condensable components from gas streams |
| CN101633600A (en) * | 2009-08-21 | 2010-01-27 | 江苏三星化工有限公司 | Method and device for enriching and recovering methyl chloride by membrane separation method |
| CN102908880A (en) * | 2012-10-24 | 2013-02-06 | 大连理工大学 | Pre-dewatering method for reducing load of high-water-content methyl chloride drying apparatus |
-
2016
- 2016-09-30 CN CN201610865913.9A patent/CN106542960A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089033A (en) * | 1989-11-07 | 1992-02-18 | Membrane Technology & Research, Inc. | Process for removing condensable components from gas streams |
| US5089033B1 (en) * | 1989-11-07 | 1995-02-21 | Membrane Tech & Res Inc | Process for removing condensable components from gas streams |
| CN101633600A (en) * | 2009-08-21 | 2010-01-27 | 江苏三星化工有限公司 | Method and device for enriching and recovering methyl chloride by membrane separation method |
| CN102908880A (en) * | 2012-10-24 | 2013-02-06 | 大连理工大学 | Pre-dewatering method for reducing load of high-water-content methyl chloride drying apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107697933B (en) | A kind of preparation method of lithium hexafluoro phosphate | |
| CN104961652B (en) | Bisphenol A type cyanate resin monomer preparation method | |
| WO2018192195A1 (en) | Method for preparing semiconductor-grade propylene glycol methyl ether acetate | |
| CN107055574A (en) | A kind of method of purification of lithium hexafluoro phosphate | |
| CN103896273B (en) | The method and system that a kind of polycrystalline silicon reduction exhaust is recycled | |
| CN106800283B (en) | Production method of powdery fire-fighting grade monoammonium phosphate | |
| CN108336426A (en) | The preparation method and its oxygen vanadium sulfate crystals obtained of a kind of vanadic sulfate | |
| CN101249953A (en) | Technique and equipment for manufacturing super-clean high-pure electronic grade hydrogen peroxide | |
| CN106542960A (en) | A kind of method of liquid in removing methyl chloride gas | |
| CN104140085B (en) | The apparatus and method of water and carbon dioxide in a kind of deep removal nitrous oxide | |
| CN102502530A (en) | Method for producing electronic-grade sulfuric acid by static fusion crystallization | |
| CN102417199B (en) | A kind of preparation method of spectroscopically pure strontium chloride | |
| CN103539129A (en) | Purification method of silicon dioxide | |
| CN110759838B (en) | Treatment method of thiourea feed liquid | |
| JP2009292724A (en) | Method of manufacturing low-moisture lithium hexafluorophosphate | |
| CN109216824A (en) | A kind of processing reuse method of useless lithium-ion battery electrolytes | |
| CN111017966A (en) | Preparation method for preparing high-purity anhydrous lithium chloride by using butyl lithium residues | |
| CN206404547U (en) | A kind of dehydration device for hydrogen chloride tail gas | |
| CN106540522A (en) | By the use of glycol+slaine as dehydrating agent come the method for removing moisture in gas | |
| CN113636585A (en) | Preparation method for preparing high-purity anhydrous neodymium chloride under normal pressure | |
| CN108821290A (en) | A kind of process units and method of carbon dioxide | |
| CN106035802A (en) | Method for increasing dissolution rate of effective components of Liu Pao tea | |
| CN106115746A (en) | The technique that a kind of lepidolite prepares lithium fluoride | |
| CN203922737U (en) | The desorption apparatus of non-condensable gas in a kind of chlorosilane | |
| CN110803986A (en) | Synthesis and preparation process of 4-phenoxybenzoic acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170329 |
|
| WD01 | Invention patent application deemed withdrawn after publication |