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Carbon dioxide Carbonyl sulfide

Other components in the feed gas may react with and degrade the amine solution. Many of these latter reactions can be reversed by appHcation of heat, as in a reclaimer. Some reaction products cannot be reclaimed, however. Thus to keep the concentration of these materials at an acceptable level, the solution must be purged and fresh amine added periodically. The principal sources of degradation products are the reactions with carbon dioxide, carbonyl sulfide, and carbon disulfide. In refineries, sour gas streams from vacuum distillation or from fluidized catalytic cracking (FCC) units can contain oxygen or sulfur dioxide which form heat-stable salts with the amine solution (see Fluidization Petroleum). [Pg.211]

Carbon dioxide, carbonyl sulfide, hydrogen cyanide, propylene, and butadiene... [Pg.268]

Sulfinol A process for removing hydrogen sulfide, carbon dioxide, carbonyl sulfide, and organic sulfur compounds from natural gas by scrubbing with di-isopropanolamine dissolved in a mixture of sulfolane and water. Developed in the 1960s by Shell International Research Mij N.V, The Netherlands and Shell Development Company, Houston. In 1996, over 180 commercial units were operating or under construction. [Pg.259]

SYNTHESIS OF PHOSGENE FROM CARBON DIOXIDE, CARBONYL SULFIDE OR CARBON DISULFIDE... [Pg.259]

CARBON-TETRACHLORIDE TRICHLORO-FLUOROMETHANE OICHLORODI FLUOROMETHANE CHLOROTRI-FLUOROME7HANE CARBON-TETRAFLUORIDE CARBON MONOXIDE CARBON DIOXIDE CARBONYL-SULFIDE CARBON-DISULFIDE CHLOROFORM DICHLORO-FLUOROMETHANE CHLORODI-FLUOROMETHANE TRIFLUORO-METHANE TRIIODOMETHANE ISOTHIOCYANIC-ACID... [Pg.377]

Phosgene can be prepared from carbon monoxide, from halogenated hydrocarbons, from carbonaceous materials, from carbon dioxide, carbonyl sulfide or carbon disulfide, and from other oxygenated compounds [39]. The method based on the chlorination of carbon monoxide is by far the most important and has been scaled-up for the commercial manufacture of phosgene. [Pg.9]

Petroleum Gases and Naphtha. Methane is the main hydrocarbon component of petroleum gases. Lesser amounts of ethane, propane, butane, isobutane, and some 0 + light hydrocarbons also exist. Other gases such as hydrogen, carbon dioxide, hydrogen sulfide, and carbonyl sulfide are also present. [Pg.167]

Chemica.1 Properties. Reviews of carbonyl sulfide chemistry are available (18,23,24). Carbonyl sulfide is a stable compound and can be stored under pressure ia steel cylinders as compressed gas ia equiUbrium with Hquid. At ca 600°C carbonyl sulfide disproportionates to carbon dioxide and carbon disulfide at ca 900°C it dissociates to carbon monoxide and sulfur. It bums with a blue flame to carbon dioxide and sulfur dioxide. Carbonyl sulfide reacts... [Pg.129]

When the Claus reaction is carried out in aqueous solution, the chemistry is complex and involves polythionic acid intermediates (105,211). A modification of the Claus process (by Shell) uses hydrogen or a mixture of hydrogen and carbon monoxide to reduce sulfur dioxide, carbonyl sulfide, carbon disulfide, and sulfur mixtures that occur in Claus process off-gases to hydrogen sulfide over a cobalt molybdate catalyst at ca 300°C (230). [Pg.144]

The Beaven process is also effective in removing small amounts of sulfur dioxide, carbonyl sulfide, and carbon disulfide that are not affected by the Claus process. These compounds are first converted to hydrogen sulfide at elevated... [Pg.98]

Sulfur dioxide Sulfur dnoxide Hydrogen sulfide Carbon disulfide Carbonyl sulfide... [Pg.105]

Carbon dioxide, sulfur dioxide, carbonyl sulfide, acetylene, and hydrogen sulfide... [Pg.78]

Air, carbon dioxide, hydrogen sulfide, carbonyl sulfide, propane, and sulfur dioxide... [Pg.123]

METHANESULFONIC ACID METHYL MERCAPTAN METHYL CHLOROSILANE METHYLAMINE METHYL SILANE TETRANITROMETHANE CARBON MONOXIDE CARBONYL SULFIDE CARBON DIOXIDE CARBON DISULFIDE BROMOTRIFLUOROETHYLENE... [Pg.31]

CYANOGEN BROMIDE CYANOGEN CHLORIDE CYANOGEN FLUORIDE CARBON MONOXIDE CARBONYL SULFIDE CARBON OXYSELENIDE CARBON DIOXIDE CARBON DISULFIDE CARBON SELENOSULFIDE CYANOGEN... [Pg.203]

The Rectisol process [667], [707], [711]-[715] seems to be the prime choice in partial oxidation plants. The process, invented by Lurgi and developed further by Linde, operates with chilled methanol, a cheap and readily available solvent, in which carbon dioxide, hydrogen sulfide and carbonyl sulfide (COS) are readily soluble at low operating temperatures of below - 30 °C. The Henry absorption coefficient for H2S is about six times higher than for C02-... [Pg.132]

In a separate study of the decomposition of sulfinic acids in the absence of solvent at 200 °C the major products were sulfur dioxide and alkenes . Minor products were water, carbon dioxide, carbon monoxide, carbonyl sulfide and sulfur. The reaction is considered to proceed by a unimolecular free radical mechanism, although kinetic evidence is lacking. Olefin formation results from transfer reactions followed by elimination and one plausible pathway is... [Pg.723]

The most common unwanted compounds that are part of natural gas are water, nitrogen, carbon dioxide, hydrogen sulfide, carbonyl sulfide, helium, and other heavier hydrocarbons. Any or all of these compounds may be found in natural gas from almost any gas field at various concentrations. [Pg.317]

The carbonyl sulfide formed in reaction ii may be converted to monothiocarbonate by carbonic anhydrase (reaction viii). Monothiocarbonate may further spontaneously degrade in reaction ix, regenerating carbonyl sulfide or forming carbon dioxide and sulfide bisulfide ion (HS) (reaction vii). [Pg.80]

The photo-oxidation products of carbon disulfide in the laboratory were identified as carbon monoxide, carbonyl sulfide, sulfur dioxide, and a polymer that adhered to the sides of the reaction vessel (Heicklen et al. 1971). Although carbon disulfide absorbs light at wavelengths between 280 and 350 nm, dissociation does not occur under environmental conditions because of low molar absorptivity (Atkinson et al. 1978 Wood and Heicklen 1971) and direct photolysis of carbon disulfide in the atmosphere does not appear to be significant. EPA (1978a) stated that the information available indicated that carbon disulfide is relatively persistent in the atmosphere. For the atmospheric oxidation of carbon disulfide to sulfur dioxide, carbonyl sulfide, and carbon monoxide, the half-life was estimated to be about 12 days. [Pg.145]

Acid Gas Components. The oil and gas industries have a long history of effectively removing and processing carbon dioxide, hydrogen sulfide, and carbonyl sulfide, (collectively termed acid gases because they are acidic) from fuel gas streams. It is common to remove H2S and CO2 from raw natural gas before the gas enters the natural gas pipeline system. In coal gasification, a portion of the feed coal converts to CO2. [Pg.29]


See other pages where Carbon dioxide Carbonyl sulfide is mentioned: [Pg.244]    [Pg.77]    [Pg.239]    [Pg.240]    [Pg.241]    [Pg.241]    [Pg.242]    [Pg.161]    [Pg.244]    [Pg.77]    [Pg.239]    [Pg.240]    [Pg.241]    [Pg.241]    [Pg.242]    [Pg.161]    [Pg.201]    [Pg.240]    [Pg.246]    [Pg.308]    [Pg.233]    [Pg.119]    [Pg.326]    [Pg.301]    [Pg.301]    [Pg.2998]    [Pg.684]    [Pg.301]    [Pg.752]    [Pg.999]   
See also in sourсe #XX -- [ Pg.61 ]




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C3O5S Carbon dioxide - carbonyl sulfide

Carbon sulfides

Carbon sulfids

Carbonyl carbon

Carbonyl carbonate

Carbonyl sulfide

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