CN115231986A - A kind of process for producing monochloromethane from chloroethylene carbonate by-product hydrogen chloride gas - Google Patents
A kind of process for producing monochloromethane from chloroethylene carbonate by-product hydrogen chloride gas Download PDFInfo
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- 239000007789 gas Substances 0.000 title claims abstract description 64
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 36
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910000041 hydrogen chloride Inorganic materials 0.000 title claims abstract description 31
- 239000006227 byproduct Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 12
- OYOKPDLAMOMTEE-UHFFFAOYSA-N 4-chloro-1,3-dioxolan-2-one Chemical compound ClC1COC(=O)O1 OYOKPDLAMOMTEE-UHFFFAOYSA-N 0.000 title claims description 13
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 title abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 33
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical class O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 25
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 15
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 14
- 239000002699 waste material Substances 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 10
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 10
- 229950005499 carbon tetrachloride Drugs 0.000 claims description 9
- 229960001701 chloroform Drugs 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000003345 natural gas Substances 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000460 chlorine Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- 238000007347 radical substitution reaction Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 239000012855 volatile organic compound Substances 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 3
- 239000011592 zinc chloride Substances 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 2
- 150000003254 radicals Chemical group 0.000 claims description 2
- FBBDOOHMGLLEGJ-UHFFFAOYSA-N methane;hydrochloride Chemical compound C.Cl FBBDOOHMGLLEGJ-UHFFFAOYSA-N 0.000 claims 9
- 230000001112 coagulating effect Effects 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract description 8
- 239000005416 organic matter Substances 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000004520 agglutination Effects 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 2
- 229940050176 methyl chloride Drugs 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940076134 benzene Drugs 0.000 description 1
- INRCYJHXYOWNST-UHFFFAOYSA-N chloroform;methane Chemical compound C.ClC(Cl)Cl INRCYJHXYOWNST-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/16—Preparation of halogenated hydrocarbons by replacement by halogens of hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/32—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D317/42—Halogen atoms or nitro radicals
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明公开了一种氯代碳酸乙烯酯副产氯化氢气体生产一氯甲烷的工艺，包括以下步骤：S1、通过将直链烷烃与氯气反应，经自由基取代后可生成氯代碳酸乙烯酯和氯化氢，分别回收反应后的液体和气体，液体即为氯代碳酸乙烯酯，气体为含有99%左右的氯化氢、1%左右的氯气及轻质有机物；S2、将步骤S1反应后回收的气体采用饱和盐酸喷淋和低温凝集轻质有机物，从而获得精制的气体。本发明可通过氯代碳酸乙烯酯生产过程中的副产氯化氢气体来生产一氯甲烷，实现尾气的高效利用和回收，且和对于有害气体进行充分的吸收后才排放，非常环保，整个回收工艺过程非常简单，反应条件便于制作，操作非常合理，便于进行推广应用。The invention discloses a process for producing monochloromethane by producing hydrogen chloride gas as a by-product of chlorinated ethylene carbonate. Hydrogen chloride, respectively recover the liquid and gas after the reaction, the liquid is chlorinated ethylene carbonate, and the gas is hydrogen chloride containing about 99%, chlorine gas about 1% and light organic matter; S2, the gas recovered after the reaction of step S1 adopts Saturated hydrochloric acid spray and low temperature agglutination of light organics to obtain refined gas. The invention can produce monochloromethane through the by-product hydrogen chloride gas in the production process of chlorinated ethylene carbonate, realize the efficient utilization and recovery of tail gas, and discharge the harmful gas after fully absorbing it, which is very environmentally friendly, and the whole recovery process The process is very simple, the reaction conditions are convenient for production, the operation is very reasonable, and it is convenient for popularization and application.
Description
技术领域technical field
本发明涉及氯代碳酸乙烯酯生产技术领域，尤其涉及一种氯代碳酸乙烯酯副产氯化氢气体生产一氯甲烷的工艺。The invention relates to the technical field of chlorinated ethylene carbonate production, in particular to a process for producing monochloromethane by producing hydrogen chloride gas by chlorinated ethylene carbonate.
背景技术Background technique
一氯甲烷，又名甲基氯，是一种有机化合物，化学式为CH3Cl，常温常压下为无色气体，微溶于水，溶于乙醇、氯仿、苯、四氯化碳、冰醋酸等，主要用作有机硅的原料，也用作溶剂、冷冻剂、香料等一氯甲烷的制备反应方程式为：CH3OH+HCl→CH3Cl+H2O。我们知道，氯代碳酸乙烯酯的制备过程会有氯化氢产生，如果不加以回收则会浪费资源同时污染环境，氯代碳酸乙烯酯的制备反应方程式为：C3H4O3+Cl2→C3H3ClO3+ HCl，由此我们设想，能否利用氯代碳酸乙烯酯的制备过程中产生的氯化氢来制备一氯甲烷。Monochloromethane, also known as methyl chloride, is an organic compound with the chemical formula CH3Cl, a colorless gas at room temperature and pressure, slightly soluble in water, soluble in ethanol, chloroform, benzene, carbon tetrachloride, glacial acetic acid, etc. , mainly used as the raw material of organic silicon, and also used as solvent, refrigerant, fragrance, etc. The preparation reaction equation of monochloromethane is: CH3OH+HCl→CH3Cl+H2O. We know that hydrogen chloride will be produced in the preparation process of chloroethylene carbonate. If it is not recycled, it will waste resources and pollute the environment. The preparation reaction equation of chloroethylene carbonate is: C3H4O3+Cl2→C3H3ClO3+ HCl, so we imagine , whether the hydrogen chloride generated during the preparation of chloroethylene carbonate can be used to prepare monochloromethane.
发明内容SUMMARY OF THE INVENTION
本发明的目的是为了解决现有技术中存在的缺点，而提出的一种氯代碳酸乙烯酯副产氯化氢气体生产一氯甲烷的工艺。The purpose of this invention is to solve the shortcoming that exists in the prior art, and proposes a kind of chloroethylene carbonate by-product hydrogen chloride gas to produce the technology of monochloromethane.
为了实现上述目的，本发明采用了如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
一种氯代碳酸乙烯酯副产氯化氢气体生产一氯甲烷的工艺，包括以下步骤：A process for the production of monochloromethane by chloroethylene carbonate by-product hydrogen chloride gas, comprising the following steps:
S1、通过将直链烷烃与氯气反应，经自由基取代后可生成氯代碳酸乙烯酯和氯化氢，分别回收反应后的液体和气体，液体即为氯代碳酸乙烯酯，气体为含有99%左右的氯化氢、1%左右的氯气及轻质有机物；S1. By reacting straight-chain alkanes with chlorine gas, chloroethylene carbonate and hydrogen chloride can be generated after radical substitution, and the reacted liquid and gas are recovered respectively. The liquid is chloroethylene carbonate, and the gas contains about 99% hydrogen chloride, about 1% chlorine and light organic matter;
S2、将步骤S1反应后回收的气体采用饱和盐酸喷淋和低温凝集轻质有机物，从而获得精制的气体；S2, adopting saturated hydrochloric acid spraying and low-temperature agglutination light organic matter with the gas recovered after the reaction of step S1, thereby obtaining refined gas;
S3、将步骤S2中获得的精制气体跟气化后的甲醇气体过热后，在催化剂的催化下于合成釜中反应，生成一氯甲烷，一氯甲烷气体经二级水喷淋除掉未反应的氯化氢气体、副产废液二氯甲烷、三氯甲烷、四氯甲烷，副产废液二氯甲烷、三氯甲烷、四氯甲烷通过沉降分层分离出来，采用天然气焚烧，液碱喷淋吸收除掉副产废液，一氯甲烷再经二级液碱喷淋，除掉未反应的氯气并生产次氯酸钠溶液，然后经除雾器除雾且经一氯甲烷压缩机压缩，降温后液化生成一氯甲烷产品。S3, after the purified gas obtained in step S2 is superheated with the vaporized methanol gas, react in the synthesis kettle under the catalysis of the catalyst to generate methyl chloride, and the methyl chloride gas is sprayed with secondary water to remove unreacted The hydrogen chloride gas, by-product waste liquid dichloromethane, chloroform, tetrachloromethane, and by-product waste liquid dichloromethane, chloroform and tetrachloromethane are separated by sedimentation and layering, incinerated by natural gas, sprayed with liquid caustic soda Absorb and remove by-product waste liquid, and then spray monochloromethane through secondary liquid alkali to remove unreacted chlorine gas and produce sodium hypochlorite solution, which is then defogged by a mist eliminator and compressed by a monochloromethane compressor, and then liquefied after cooling. A chloromethane product is formed.
优选的，所述步骤S3中精制气体跟甲醇的过热温度为120-140℃。Preferably, in the step S3, the superheating temperature of the purified gas and methanol is 120-140°C.
优选的，所述步骤S3中的催化剂为氯化锌溶液。Preferably, the catalyst in the step S3 is a zinc chloride solution.
优选的，所述步骤S3中天然气焚烧后的尾气经二级液碱喷淋和挥发性有机物吸收后达标高排。Preferably, in the step S3, the tail gas after the natural gas incineration is sprayed by the secondary liquid alkali and absorbed by the volatile organic compounds and then reaches the standard and high discharge.
与现有技术相比，本发明的有益效果是：Compared with the prior art, the beneficial effects of the present invention are:
本发明中，可通过氯代碳酸乙烯酯生产过程中的副产氯化氢气体来生产一氯甲烷，实现尾气的高效利用和回收，且和对于有害气体进行充分的吸收后才排放，非常环保，整个回收工艺过程非常简单，反应条件便于制作，操作非常合理，便于进行推广应用。In the present invention, the by-product hydrogen chloride gas in the production process of chlorinated ethylene carbonate can be used to produce monochloromethane, so as to realize the efficient utilization and recovery of tail gas, and discharge the harmful gas after fully absorbing it, which is very environmentally friendly. The recovery process is very simple, the reaction conditions are convenient for production, the operation is very reasonable, and it is convenient for popularization and application.
具体实施方式Detailed ways
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
一种氯代碳酸乙烯酯副产氯化氢气体生产一氯甲烷的工艺，包括以下步骤：A process for the production of monochloromethane by chloroethylene carbonate by-product hydrogen chloride gas, comprising the following steps:
S1、通过将直链烷烃与氯气反应，经自由基取代后可生成氯代碳酸乙烯酯和氯化氢，分别回收反应后的液体和气体，液体即为氯代碳酸乙烯酯，气体为含有99%左右的氯化氢、1%左右的氯气及轻质有机物；S1. By reacting straight-chain alkanes with chlorine gas, chloroethylene carbonate and hydrogen chloride can be generated after radical substitution, and the reacted liquid and gas are recovered respectively. The liquid is chloroethylene carbonate, and the gas contains about 99% hydrogen chloride, about 1% chlorine and light organic matter;
S2、将步骤S1反应后回收的气体采用饱和盐酸喷淋和低温凝集轻质有机物，从而获得精制的气体；S2, adopting saturated hydrochloric acid spraying and low-temperature agglutination light organic matter with the gas recovered after the reaction of step S1, thereby obtaining refined gas;
S3、将步骤S2中获得的精制气体跟气化后的甲醇气体过热后，精制气体跟甲醇的过热温度为120-140℃，在催化剂的催化下于合成釜中反应，催化剂为氯化锌溶液，生成一氯甲烷，一氯甲烷气体经二级水喷淋除掉未反应的氯化氢气体、副产废液二氯甲烷、三氯甲烷、四氯甲烷，副产废液二氯甲烷、三氯甲烷、四氯甲烷通过沉降分层分离出来，采用天然气焚烧，液碱喷淋吸收除掉副产废液，天然气焚烧后的尾气经二级液碱喷淋和挥发性有机物吸收后达标高排，一氯甲烷再经二级液碱喷淋，除掉未反应的氯气并生产次氯酸钠溶液，然后经除雾器除雾且经一氯甲烷压缩机压缩，降温后液化生成一氯甲烷产品。S3, after the purified gas obtained in step S2 is superheated with the vaporized methanol gas, the superheated temperature of the purified gas and methanol is 120-140 ° C, and the reaction is carried out in a synthesis kettle under the catalysis of a catalyst, and the catalyst is a zinc chloride solution , generate monochloromethane, the monochloromethane gas is sprayed with secondary water to remove unreacted hydrogen chloride gas, by-product waste liquid dichloromethane, chloroform, tetrachloromethane, by-product waste liquid dichloromethane, trichloromethane Methane and tetrachloromethane are separated by sedimentation and stratification, and natural gas is incinerated, and liquid alkali spraying absorbs and removes by-product waste liquid. Monochloromethane is then sprayed with secondary liquid alkali to remove unreacted chlorine gas and produce sodium hypochlorite solution, which is then defogged by a mist eliminator and compressed by a monochloromethane compressor. After cooling, it is liquefied to generate a monochloromethane product.
工作原理：通过将直链烷烃与氯气反应，经自由基取代后可生成氯代碳酸乙烯酯和氯化氢，分别回收反应后的液体和气体，液体即为氯代碳酸乙烯酯，气体为含有99%左右的氯化氢、1%左右的氯气及轻质有机物；将步骤S1反应后回收的气体采用饱和盐酸喷淋和低温凝集轻质有机物，从而获得精制的气体；将步骤S2中获得的精制气体跟气化后的甲醇气体过热后，精制气体跟甲醇的过热温度为120-140℃，在催化剂的催化下于合成釜中反应，催化剂为氯化锌溶液，生成一氯甲烷，一氯甲烷气体经二级水喷淋除掉未反应的氯化氢气体、副产废液二氯甲烷、三氯甲烷、四氯甲烷，副产废液二氯甲烷、三氯甲烷、四氯甲烷通过沉降分层分离出来，采用天然气焚烧，液碱喷淋吸收除掉副产废液，天然气焚烧后的尾气经二级液碱喷淋和挥发性有机物吸收后达标高排，一氯甲烷再经二级液碱喷淋，除掉未反应的氯气并生产次氯酸钠溶液，然后经除雾器除雾且经一氯甲烷压缩机压缩，降温后液化生成一氯甲烷产品。Working principle: By reacting straight-chain alkanes with chlorine gas, chlorinated ethylene carbonate and hydrogen chloride can be generated after free radical substitution, and the reacted liquid and gas are recovered respectively. The liquid is chlorinated ethylene carbonate, and the gas contains 99%. about hydrogen chloride, about 1% chlorine and light organic matter; the gas recovered after the reaction in step S1 is sprayed with saturated hydrochloric acid and the light organic matter is agglomerated at low temperature, thereby obtaining a refined gas; the refined gas obtained in step S2 is followed by gas After the methanol gas is overheated, the overheating temperature of the purified gas and methanol is 120-140 ° C, and the reaction is carried out in the synthesis kettle under the catalysis of the catalyst. The unreacted hydrogen chloride gas, the by-product waste liquid dichloromethane, chloroform and tetrachloromethane are removed by spraying with grade water, and the by-product waste liquid dichloromethane, chloroform and tetrachloromethane are separated by sedimentation and stratification, Using natural gas incineration, liquid alkali spray absorption to remove by-product waste liquid, the tail gas after natural gas incineration is sprayed by secondary liquid alkali and absorbed by volatile organic compounds and then discharged to the standard and high level, and methyl chloride is then sprayed by secondary liquid alkali, Remove unreacted chlorine gas and produce sodium hypochlorite solution, which is then defogged by a demister and compressed by a chloromethane compressor, and liquefied to produce a chloromethane product after cooling.
综上，可通过氯代碳酸乙烯酯生产过程中的副产氯化氢气体来生产一氯甲烷，实现尾气的高效利用和回收，且和对于有害气体进行充分的吸收后才排放，非常环保，整个回收工艺过程非常简单，反应条件便于制作，操作非常合理，便于进行推广应用。To sum up, monochloromethane can be produced by the by-product hydrogen chloride gas in the production process of chlorinated ethylene carbonate, which can realize the efficient utilization and recovery of tail gas, and discharge the harmful gas after fully absorbing it, which is very environmentally friendly and the whole recovery The technological process is very simple, the reaction conditions are convenient for production, the operation is very reasonable, and the popularization and application are convenient.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.
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| CN102718623A (en) * | 2012-07-13 | 2012-10-10 | 自贡鸿鹤化工股份有限公司 | Method of producing methane chloride by using byproduct hydrogen chloride of tetrachloroethylene device |
| CN109942536A (en) * | 2019-04-16 | 2019-06-28 | 张家港瀚康化工有限公司 | A kind of reactive distillation prepares high-purity chloro for the method for ethylene carbonate |
| CN114437016A (en) * | 2022-02-28 | 2022-05-06 | 济源市恒顺新材料有限公司 | Production and manufacturing method of chlorinated ethylene carbonate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102718623A (en) * | 2012-07-13 | 2012-10-10 | 自贡鸿鹤化工股份有限公司 | Method of producing methane chloride by using byproduct hydrogen chloride of tetrachloroethylene device |
| CN109942536A (en) * | 2019-04-16 | 2019-06-28 | 张家港瀚康化工有限公司 | A kind of reactive distillation prepares high-purity chloro for the method for ethylene carbonate |
| CN114437016A (en) * | 2022-02-28 | 2022-05-06 | 济源市恒顺新材料有限公司 | Production and manufacturing method of chlorinated ethylene carbonate |
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