Acetylene removal process

Patent · Tue Feb 17 04:00:00 EST 1987

OSTI ID:7074809

Mc Farland, C G

This patent describes a vapor phase process for the preparation of unsaturated hydrocarbon monoolefins in diolefins comprising oxidative dehydrogenation of stream of C/sub 3/ to C/sub 9/ hydrocarbon compounds to produce a product stream comprising 3.5 to 80 mol percent of unsaturated hydrocarbon product and of about or from 0.0001 to 2.5 mol percent acetylenic compound impurity, about or from 0.0005 to 2.5 mol percent carbonyl compounds and 5 to 93 mol percent non-condensable gases. The improvement described here comprises contacting the product stream in vapor phase at a temperature in the range of 250/sup 0/ to 900/sup 0/C. and containing less than 5 mol percent fee oxygen with a solid catalyst for reducing the acetylenic compounds in the product stream. The catalyst consists essentially of a mixture of oxides, carbonates or hydroxides of Fe and Ni, Fe being present as the major metal component and Ni being present in the range of about 0.25 to 20 weight percent based on total catalyst, an alkaline earth metal oxide, carbonate or hydroxide of Mg, Ca, Sr or Ba, and about 0.5 to 30 weight percent of an alkali metal oxide, carbonate or hydroxide of Li, Na, K or Rb determined as metal and based on the other metallic elements, and recovering the stream having the amount of acetylenic compounds therein reduced.

• Assignee: Petro-Tex Chemical Corp., Houston, TX
• Patent Number(s): US 4644088
• OSTI ID: 7074809
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACETYLENE
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKENES
ALKYNES
CARBON COMPOUNDS
CARBONATES
CARBONYLS
CATALYSTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DEHYDROGENATION
ELEMENTS
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXIDES
IMPURITIES
IRON CARBONATES
IRON COMPOUNDS
IRON HYDROXIDES
IRON OXIDES
NICKEL CARBONATES
NICKEL COMPOUNDS
NICKEL HYDROXIDES
NICKEL OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
QUANTITY RATIO
REMOVAL
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE