CN103804121A - Production process for synthesis of bromoethane - Google Patents
Production process for synthesis of bromoethane Download PDFInfo
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- CN103804121A CN103804121A CN201410033242.0A CN201410033242A CN103804121A CN 103804121 A CN103804121 A CN 103804121A CN 201410033242 A CN201410033242 A CN 201410033242A CN 103804121 A CN103804121 A CN 103804121A
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Abstract
The invention provides a production process for synthesis of bromoethane and relates to the technical field of chemical engineering. The bromoethane is obtained by reacting sulfur, water, bromide, ethanol and sulfuric acid, and then rectifying through a rectifying tower. The production process provided by the invention has the beneficial effects of convenient and easy preparation, environmental protection without pollution, use of easily available raw materials, low equipment investment, high purity, and convenience in operation, and the prepared bromoethane is good in using effect, safe and reliable.
Description
Technical field
The present invention relates to chemical technology field, be specifically related to the synthetic production technique of a kind of monobromethane.
Background technology
Monobromethane is colourless oil liquid.There are smell and the calcination taste of similar ether.Reveal and put air or see that light gradually becomes yellow.Volatile.Can with ethanol, ether, chloroform and most immiscible organic solvent.Relative density is 1.4612, and zero pour is-119 ℃, and boiling point is 38.4 ℃, and monobromethane is the important source material of organic synthesis.In agricultural, be used as the fumigating insecticide in storage cereal, warehouse and room etc.Monobromethane is to form by Potassium Bromide and freezing sulfuric acid and ethanol synthesis, is usually used in the ethylization of gasoline, refrigerant and narcotic.Purposes is very extensive, but current still more traditional mode of the method for industrial production monobromethane in this traditional production method, have the problems such as yield is low, not high pollution of purity is serious, and production technique is comparatively complicated, is difficult to meet human wants.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of purity high, the production technique that the simple monobromethane of preparation technology is synthetic.
Technical problem to be solved by this invention realizes by the following technical solutions:
The production technique that monobromethane is synthetic, is characterized in that: comprise following processing step,
A. choose the reactor of a 1500L, and add the sulphur of 8-12kg and the water of 90-110kg to inside, open and stir.
B. the bromine that takes 120-130kg adds in the reactor in described step a, constantly stirs, and control temperature is 35-40 ℃.
C. in above-mentioned steps b, add the ethanol of 380-390kg, control temperature at 25-30 ℃ and add the sulfuric acid of 450-550kg, insulation reaction 50.0h.
D. after above-mentioned steps c reaction finishes, in the chuck of reactor, pass into chilled brine, control temperature of charge is 4-6 ℃, leaves standstill branch vibration layer.
E. the oil reservoir inside after the branch vibration layer in above-mentioned steps d is added to 10.0% sodium carbonate solution, temperature is controlled at 8-10 ℃, after agitator treating 10min, leaves standstill a point oil-yielding stratum.
F. oil reservoir in above-mentioned steps e is dropped in rectifying still, passes into steam and start heating, steam monobromoethane after remaining resistates be monobromethane finished product packing warehouse-in.
The reactor adopting in described step a is glassed steel reaction vessels.
The invention has the beneficial effects as follows: the present invention is easy to prepare simple, and environment friendly and pollution-free, raw material is easy to get, and facility investment is few, and purity is high, convenient operation, the monobromethane result of use of preparation is good, safe and reliable.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
The production technique that monobromethane is synthetic, is characterized in that: comprise following processing step,
A. choose the glassed steel reaction vessels of a 1500L, and add the sulphur of 8-12kg and the water of 90-110kg to inside, open and stir.
B. the bromine that takes 120-130kg adds in the glassed steel reaction vessels in described step a, constantly stirs, and control temperature is 35-40 ℃.
C. in above-mentioned steps b, add the ethanol of 380-390kg, control temperature at 25-30 ℃ and add the sulfuric acid of 450-550kg, insulation reaction 50.0h.
D. after above-mentioned steps c reaction finishes, in the chuck of glassed steel reaction vessels, pass into chilled brine, control temperature of charge is 4-6 ℃, leaves standstill branch vibration layer.
E. the oil reservoir inside after the branch vibration layer in above-mentioned steps d is added to 10.0% sodium carbonate solution, temperature is controlled at 8-10 ℃, after agitator treating 10min, leaves standstill a point oil-yielding stratum.
F. oil reservoir in above-mentioned steps e is dropped in rectifying still, passes into steam and start heating, steam monobromoethane after remaining resistates be monobromethane finished product packing warehouse-in.
Embodiment 2
The production technique that monobromethane is synthetic, is characterized in that: comprise following processing step,
A. choose the glassed steel reaction vessels of a 1500L, and add the sulphur of 8-12kg and the water of 90-110kg to inside, open and stir.
B. the bromine that takes 120-130kg adds in the glassed steel reaction vessels in described step a, constantly stirs, and control temperature is 35-40 ℃.
C. in above-mentioned steps b, add the ethanol of 380-390kg, control temperature at 25-30 ℃ and add the sulfuric acid of 450-550kg, insulation reaction 50.0h.
D. after above-mentioned steps c reaction finishes, in the chuck of glassed steel reaction vessels, pass into chilled brine, control temperature of charge is 4-6 ℃, leaves standstill branch vibration layer.
E. the oil reservoir inside after the branch vibration layer in above-mentioned steps d is added to 10.0% sodium carbonate solution, temperature is controlled at 8-10 ℃, after agitator treating 10min, leaves standstill a point oil-yielding stratum.
F. oil reservoir in above-mentioned steps e is dropped in rectifying still, passes into steam and start heating, steam monobromoethane after remaining resistates be monobromethane finished product packing warehouse-in.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. the synthetic production technique of monobromethane, is characterized in that: comprise following processing step,
A. choose the reactor of a 1500L, and add the sulphur of 8-12kg and the water of 90-110kg to inside, open and stir.
B. the bromine that takes 120-130kg adds in the reactor in described step a, constantly stirs, and control temperature is 35-40 ℃.
C. in above-mentioned steps b, add the ethanol of 380-390kg, control temperature at 25-30 ℃ and add the sulfuric acid of 450-550kg, insulation reaction 50.0h.
D. after above-mentioned steps c reaction finishes, in the chuck of reactor, pass into chilled brine, control temperature of charge is 4-6 ℃, leaves standstill branch vibration layer.
E. the oil reservoir inside after the branch vibration layer in above-mentioned steps d is added to 10.0% sodium carbonate solution, temperature is controlled at 8-10 ℃, after agitator treating 10min, leaves standstill a point oil-yielding stratum.
F. oil reservoir in above-mentioned steps e is dropped in rectifying still, passes into steam and start heating, steam monobromoethane after remaining resistates be monobromethane finished product packing warehouse-in.
2. the synthetic production technique of a kind of monobromethane according to claim 1, is characterized in that: the reactor adopting in described step a is glassed steel reaction vessels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410033242.0A CN103804121B (en) | 2014-01-23 | 2014-01-23 | Production process for synthesis of bromoethane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410033242.0A CN103804121B (en) | 2014-01-23 | 2014-01-23 | Production process for synthesis of bromoethane |
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| CN103804121A true CN103804121A (en) | 2014-05-21 |
| CN103804121B CN103804121B (en) | 2015-07-01 |
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| CN201410033242.0A Expired - Fee Related CN103804121B (en) | 2014-01-23 | 2014-01-23 | Production process for synthesis of bromoethane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105732395A (en) * | 2016-02-01 | 2016-07-06 | 青海制药厂有限公司 | Method for preparing compound bromination N, N, N trimethyl aniline |
| CN112194555A (en) * | 2020-09-03 | 2021-01-08 | 潍坊摩根化工有限公司 | Preparation method of brominated alkanes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766012A (en) * | 2012-06-29 | 2012-11-07 | 连云港海水化工有限公司 | Environmental-friendly method for preparing bromoethane |
| CN102826954A (en) * | 2012-09-06 | 2012-12-19 | 山东天一化学股份有限公司 | Preparation method for bromoalkane |
| CN103012026A (en) * | 2012-12-21 | 2013-04-03 | 山西新天源医药化工有限公司 | Bromination reaction method |
-
2014
- 2014-01-23 CN CN201410033242.0A patent/CN103804121B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766012A (en) * | 2012-06-29 | 2012-11-07 | 连云港海水化工有限公司 | Environmental-friendly method for preparing bromoethane |
| CN102826954A (en) * | 2012-09-06 | 2012-12-19 | 山东天一化学股份有限公司 | Preparation method for bromoalkane |
| CN103012026A (en) * | 2012-12-21 | 2013-04-03 | 山西新天源医药化工有限公司 | Bromination reaction method |
Non-Patent Citations (2)
| Title |
|---|
| 唐星三等: "《副产溴化氢综合利用研究现状与前景展望》", 《盐业与化工》 * |
| 王妙新，周立军: "《乙醇溴化法溴乙烷的简易制备》", 《海湖盐与化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105732395A (en) * | 2016-02-01 | 2016-07-06 | 青海制药厂有限公司 | Method for preparing compound bromination N, N, N trimethyl aniline |
| CN112194555A (en) * | 2020-09-03 | 2021-01-08 | 潍坊摩根化工有限公司 | Preparation method of brominated alkanes |
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| CN103804121B (en) | 2015-07-01 |
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