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US 9,169,168 B2Granted
Process for producing ethylene by chlorination of ethane and dehydrochlorination of ethyl chloride
OwnerJohn E. Staufferinventor
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Abstract
Ethylene is produced from ethane in three steps: first, ethane is oxychlorinated to produce ethyl chloride and water; second, ethyl chloride from the first step is cracked to produce ethylene and hydrogen chloride; and third, the hydrogen chloride from the second step is recycled to the front step.
Claims1
A process for the manufacture of ethylene from ethane comprising the steps of:
- a) oxychlorinating ethane with hydrogen chloride and oxygen to give ethyl chloride and water at a temperature in the range of 350° to 400° C. in the presence of a catalyst;
- b) vapor phase cracking the ethyl chloride to give ethylene and hydrogen chloride at a temperature in the range of 325° to 375° C. over a catalyst consisting of silica alumina;
- and
- c) recycling hydrogen chloride produced in step b for use in step a.
1 more element
Dependencies are inferred from the claim text.