Showing papers on "Substitute natural gas published in 1979"

Gas processing handbook

Abstract: Basic processes for the gas processing industry are reviewed, plus those of more particular interest. The process descriptions are of dehydration, sweetening, recovery, sulfur recovery, tail gas cleanup, synthetic natural gas (liquid and solid feed), low-btu gas, hydrogen, and liquefied natural gas. In each description, there is appropriate information on applications, charge/feed, product, process steps, operating conditions, economics, present commercial installations, references and licensors, and a flow diagram. 48 references.

Process for gasification of coal

Abstract: Coarse, graded coal is fed to a pressurized relatively fixed bed, non-slagging gasifier (12) from which crude gas (26) is recovered. Fine coal is slurried (42) in an aqueous mixture comprising the discharge (38) from the relatively fixed bed gasifier (12), which discharge is composed of hydrocarbons, phenolic water and other liquids as major components and additional makeup water, if required, and the slurry is fed to a slagging, pressurized entrained flow gasifier (56) from which additional crude gas (60) is recovered. The two streams of gas are cleaned (36, 82) and then used to meet a variety of demands, including, but not limited to, gas turbine generation of electric power, manufacture of synthetic natural gas and manufacture of methanol. The two gasifiers are arranged for balanced parallel operation so that no liquid by-products and no phenolic waste water disposal problems are encountered.

Fluidized-bed catalysts for production of synthetic natural gas by methanization of carbon monoxide

Abstract: A fluidized-bed catalyst for the production of synthetic natural gas by the methanization of carbon monoxide which catalyst in the unreduced state contains nickel oxide on a carrier material resistant to temperature changes, and a hydraulic cement, said catalyst obtainable by compressing a composition comprising a carrier material and nickel oxide in admixture with hydraulic cement as binder in the wetted condition at a pressure above 1600 kp/cm 2 into a formed body, calcining the so-compressed formed body, curing the so-calcined formed body by treatment with water or steam, recalcining the so-cured formed body and comminuting the same and recovering a comminuted material having a particle size fraction ranging from 40 to 350μ. Also disclosed is a process for production of synthetic natural gas by fluidized-bed methanization of carbon monoxide with hydrogen employing such a catalyst.

Small-scale coal-gasification plants

Abstract: This paper presents technical and economic analyses of coal-gasification processes to manufacture medium-heating-value gas and synthetic natural gas (SNG) from two commercially available processes: Koppers-Totzek and Lurgj. The plants were designed for a capacity of 30 × 109 Btu/day.

Substituted natural gas via steam reforming of kerosene

Abstract: A multiple-stage steam reforming process for producing a substitute natural gas from kerosene boiling range hydrocarbons. Initially, a lower-boiling feedstock is steam reformed and a portion of the effluent is subjected to hydrogen-producing conditions to provide a vaporous phase enriched in hydrogen content. This vaporous phase is utilized throughout the reaction zone circuit to decrease the extent to which carbon becomes deposited upon the various catalytic composites, and especially with respect to those reaction zones in which the kerosene boiling range hydrocarbons are processed. Gasification of the kerosene fractions is effected at a minimum catalyst temperature of about 840 DEG F. (448.9 DEG C.) and a maximum catalyst temperature of about 1,000 DEG F. (537.8 DEG C.).