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Résultats pour
 brevets
1.
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Method for preparing vinyl chloride from acetylene and dichlorethane
| Numéro d'application |
14406931 |
| Numéro de brevet |
09371259 |
| Statut |
Délivré - en vigueur |
| Date de dépôt |
2012-07-12 |
| Date de la première publication |
2015-05-21 |
| Date d'octroi |
2016-06-21 |
| Propriétaire |
- SHANGHAI ADVANCED RESEARCH INSTITUTE, CHINESE ACADEMY OF SCIENCES (Chine)
- ZHONGKE YIGONG (SHANGHAI) CHEMICAL TECHNOLOGY CO., LTD. (Chine)
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| Inventeur(s) |
- Jiang, Biao
- Zhong, Jinguang
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Abrégé
Provided is a method for preparing vinyl chloride with acetylene and dichlorethane for large-scale industrial production. Acetylene, dichlorethane vapor and hydrogen chloride gas at a molar ratio of 1:(0.3-1.0):(0-0.20) are mixed; the raw mixed gas is preheated; the preheated raw mixed gas passes through a reactor containing a catalyst and reacts; the resultant mixed gas is cooled to 30-50° C. and pressurized to 0.4-1.0 MPa, and then cooled to ambient temperature, and further frozen to −25-15° C. for liquefaction isolation, and unliquefied gas is recycled and reused; liquefied liquid is sent to a rectifying tower for rectification, and vinyl chloride monomers meeting polymerization requirements are obtained. The present invention has the advantages of eliminating mercury contamination completely, simplifying the reactor structure, recycling hydrogen chloride and acetylene, reducing waterwash process, avoiding mass production of waste acid and improving utilization of chlorine.
Classes IPC ?
- C07C 17/07 - Préparation d'hydrocarbures halogénés par addition d'halogénures d'hydrogène
- C07C 17/08 - Préparation d'hydrocarbures halogénés par addition d'halogénures d'hydrogène à des hydrocarbures non saturés
- C07C 17/25 - Préparation d'hydrocarbures halogénés par élimination d'halogénures d'hydrogène à partir d'hydrocarbures halogénés
- C07C 17/354 - Préparation d'hydrocarbures halogénés par des réactions n'influençant pas le nombre d'atomes de carbone ou d'halogène dans les molécules par hydrogénation
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2.
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METHOD FOR PREPARING VINYL CHLORIDE WITH ACETYLENE AND DICHLORETHANE
| Numéro d'application |
CN2012078540 |
| Numéro de publication |
2013/185400 |
| Statut |
Délivré - en vigueur |
| Date de dépôt |
2012-07-12 |
| Date de publication |
2013-12-19 |
| Propriétaire |
- SHANGHAI ADVANCED RESEARCH INSTITUTE, CHINESE ACADEMY OF SCIENCES (Chine)
- ZHONGKE YIGONG (SHANGHAI) CHEMICAL TECHNOLOGY CO., LTD. (Chine)
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| Inventeur(s) |
- Jiang, Biao
- Zhong, Jinguang
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Abrégé
The present invention provides a method for preparing vinyl chloride with acetylene and dichlorethane. The present invention is a method for preparing vinyl chloride with acetylene and dichlorethane for large-scale industrial production. Acetylene, dichlorethane vapor and hydrogen chloride gas at a molar ratio of 1:(0.3-1.0):(0-0.20) are mixed; the starting mixed gas is preheated; the preheated starting mixed gas is charged into a reactor containing a catalyst and reacts; the resultant mixed gas is cooled to 30-50oC and pressurized to 0.4-1.0 MPa, and then cooled to ambient temperature, and further frozen to -25-15oC for liquefaction isolation, and unfluidified gas is recycled and reused; fluidified liquid is sent to a rectifying tower for rectification, and vinyl chloride monomers meeting polymerization requirements are obtained. The present invention has the advantages of eliminating mercury contamination completely, simplifying the reactor structure, recycling hydrogen chloride and acetylene, omitting waterwash process, avoiding mass production of waste acid and improving utilization of chlorine.
Classes IPC ?
- C07C 17/08 - Préparation d'hydrocarbures halogénés par addition d'halogénures d'hydrogène à des hydrocarbures non saturés
- C07C 17/25 - Préparation d'hydrocarbures halogénés par élimination d'halogénures d'hydrogène à partir d'hydrocarbures halogénés
- C07C 21/06 - Chlorure de vinyle
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