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Natural gas purificn. before chlorination to chloromethane cpds. - by simultaneous desulphurisation, methanisation and cracking over two catalysts in single-zone reactor

机译：天然气净化。在氯化为氯甲烷cpds之前。 -通过单区反应器中的两种催化剂同时进行脱硫，甲烷化和裂解

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In the prodn. of chloromethanes (I), esp. highly pure MeCl and CH2Cl2, from natural gas (II) by thermal chlorination of CH4, (II) contg. max. 3% N2 is purified in a sinzle-zone reactor contg. a hydrogenation catalyst (III) for residual desulphurisation and a cracking/hydrogenation catalyst (IV) for simultaneously converting CO2 to CH4 and craking the 2+ C hydrocarbons. (III) and (IV) are sepd. only by a layer of expanded metal. Gas mixt. of H2 and (II) in 1:(10-20) vol. ratio is passed through (III) and (IV), heated to the operating temp. Purified gas is subjected to thermal chlorination conventionally, then washed with water, dried, compressed and cooled to ca.- 20 deg. C. Uncondensed prods. are recycled or removed and (I) are distilled. Active components of (III) are pref. hydrogenated and bound CuO, MoO3 and ZnO; and of (IV) NiO and Pd and/or Al2O3 and/or Ni and/or Cr2O3. Desulphurisation, hydrogenative cracking and methanisation of CO2 are carried out at 200-1000 kPa, 3202-430 deg. C and a throughput of 500-3000 v/vh. ADVANTAGE - (II) is purified by a simple, economical process, so the overall process is more economical.

机译：在产品中氯甲烷（I），尤其是高纯度的MeCl和CH2Cl2，来自天然气（II）通过CH4的热氯化（II）续。最高在单区反应器（续）中纯化3％的N2。用于残余脱硫的加氢催化剂（III）和用于同时将CO2转化为CH4和裂化2+ C烃的裂化/加氢催化剂（IV）。（III）和（IV）分开。仅由一层膨胀金属制成。气体混合。 1：（10-20）卷中H2和（II）的浓度比率通过（III）和（IV），加热到工作温度。纯化后的气体按常规进行热氯化，然后用水洗涤，干燥，压缩并冷却至约20度。 C.未凝结的产物。被回收或除去，并且（I）被蒸馏。（III）的活性成分是优选的。氢化并键合的CuO，MoO3和ZnO; （IV）NiO和Pd和/或Al2O3和/或Ni和/或Cr2O3。在200-1000 kPa，3202-430度下进行CO2的脱硫，加氢裂化和甲烷化。 C和500-3000 v / vh的吞吐量。优点-（II）通过简单，经济的方法纯化，因此整个过程更经济。

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公开/公告号DE4218726A1

专利类型
公开/公告日1994-01-05

原文格式PDF
申请/专利权人 CHEMIE AG BITTERFELD-WOLFEN 06749 BITTERFELD DE;LEUNA-WERKE AG 06237 LEUNA DE;
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申请/专利号DE19924218726
发明设计人 VOGEL GERHARD DR. O-4413 SANDERSDORF DE;MEYE HORST DR. O-4090 HALLE DE;KOCHMANN WERNER PROF. DR. O-4440 WOLFEN DE;NEWE RUEDIGER DR. O-4440 WOLFEN DE;PORNACK GERHARD DIPL.-ING. O-4440 WOLFEN DE;SATTELMAYER WILLI DIPL.-CHEM. O-4440 WOLFEN DE;WEBER KLAUS DR. O-4203 BAD DUERRENBERG DE;
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申请日1992-06-06
分类号C07C7/148;C07C19/02;
国家 DE
入库时间 2022-08-22 04:36:12

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