Showing papers on "Substitute natural gas published in 1971"
Patent•
04 Jun 1971TL;DR: In this article, the authors describe a system for separating the entire volume of SULFUR-free NAPHTHA into a smaller fraction of the volume of NITROGEN and HYDROCRACKING the rest.
Abstract: SULFUR-FREE, METHANE-RICH SUBSTITUTE NATURAL GAS IN PRODUCED FROM A HIGH SULFUR CRUDE OIL BY A NONPOLLUTING PROCESS CAPABLE OF ACHIEVING AN UNEXPECTEDLY HIGH TERMAL EFFCICENCY. THE PRROCESS COMPISES SEPARATING WHOLE CRUDE OIL INTO A PLURALITY OF FRACTIONS COMPRISING A BOTTOMS FRACTION AND A LIGHTER OIL FRACTION, DESULFURIZING AND HYDROCRACKING THE OIL FRACTION INTO A SUBSTANTIALLY SULFUR-FREE NAPHTHA IN THE PRESENCE OF HYDROGEN, WHICH IS PROVIDED BY CONVERTING A RESIDUE PORTION OBTAINED FROM THE BOTTOMS FRACTION. THE RESULTING SULFUR-FREE NAPHTHA IS COVERED INTO SUBSTITUTE NATURAL GAS IN THE PRESENCE OF STREAM. NOT ONLY IS A THERMAL EFFICIENCY OF APPROXIMATELY 100 PERCENT OBTAINED, NOTWITHSTANDING THE USE OF A PORTION OF THE CRUDE OIL FOR REFINERY FUEL, BUT NAPHTHA IS PRODUCED AT A VOLUMETRIC EFFICIENCY OF ABOUT 100 PERCENT BASED UPON THE CRUDE OIL FEEDSTOCK. THE SYSTEM IS AUTOGENIC WITH RESPECT TO HYDROGEN REQUIREMENTS FOR DESULFURIZATION, NITROGEN REMOVAL, AND HYDROCRACKING. D R A W I N G
11 citations
Patent•
26 Apr 1971
TL;DR: In this paper, Steams are used to produce a METHANE-RICH Gaseous Product, SUited for Use as a Synthetic Natural Gas, from HIGHER-BOILING HYDROCARBONS A PORTION OF the INITIAL reaction zone product EFFLUENT, GENERALLY from 30 MOL PERCENT to about 500 MOL per percent, is reacted in a SECOND reaction zone at HYDROGEN-PRODUCING CONDITIONS; the PRODUCT thereFROM is RECYCLED to the IN
Abstract: STEAM REFORMING IS EFFECTED TO PRODUCE A METHANE-RICH GASEOUS PRODUCT, SUITED FOR USE AS A SYNTHETIC NATURAL GAS, FROM HIGHER-BOILING HYDROCARBONS A PORTION OF THE INITIAL REACTION ZONE PRODUCT EFFLUENT, GENERALLY FROM 30 MOL PERCENT TO ABOUT 500 MOL PERCENT IS REACTED IN A SECOND REACTION ZONE AT HYDROGEN-PRODUCING CONDITIONS; THE PRODUCT THEREFROM IS RECYCLED TO THE INITIAL REACTION ZONE
7 citations
Patent•
09 Jul 1971
TL;DR: A method of producing synthetic natural gas using the gasification products of coke, coal, or other carbonaceous materials is described in this article, but the method is not suitable for the use of coal.
Abstract: A method of producing synthetic natural gas using the gasification products of coke, coal, or other carbonaceous materials.
5 citations
Patent•
10 Mar 1971TL;DR: In this paper, a method of producing gaseous and liquid fuels from crude oil involving fractionally distilling crude oil to four basic fractions: (1) a light distillate composed of hydrocarbons that boil at less than about 350* F; (2) an intermediate distillation mixture with a boiling range from about 320* F to about 420*F; (3) a reduced crude oil residue; and (4) sour gas, i.e., heavy hydrocarbon mixture with four or less carbon atoms and H2S.
Abstract: Method of producing gaseous and liquid fuels from crude oil involving fractionally distilling crude oil to four basic fractions: (1) a light distillate composed of hydrocarbons that boil at less than about 350* F.; (2) an intermediate distillate composed of hydrocarbons having a boiling range of from about 320* F. to about 420* F.; (3) a reduced crude oil residue, i.e., heavier hydrocarbons that boil at greater than about 420* F., and (4) sour gas, i.e., hydrocarbons principally having four or less carbon atoms and H2S. The light distillate fraction is treated to desulfurize it and then is further processed by catalytic treatment to produce synthetic natural gas, i.e., methane-rich gas. The sour gas fraction is desulfurized and used directly or catalytically enriched as a component of the synthetic natural gas. The intermediate distillate fraction is typically used directly as gas turbine fuel, but may be desulfurized if desired. The reduced crude oil fraction is desulfurized and may serve principally as a boiler fuel.
1 citations