Showing papers on "Substitute natural gas published in 1996"

Catalyst material for use in producing substitute natural gas and method for producing substitute natural gas

Abstract: A catalyst material produced is for use in producing a substitute natural gas from a source gas containing at least one of carbon dioxide and carbon monoxide, and a reducing gas. The catalyst material contains rhodium and palladium carried on a metal oxide carrier. In producing the substitute natural gas, the source gas containing at least one of carbon dioxide and carbon monoxide, and a reducing gas carried on the metal oxide carrier, are heated under the presence of the catalyst containing rhodium and palladium carried on the metal oxide carrier. It is possible to produce the substitute natural gas highly efficiently at a low temperature not only from carbon monoxide but also from carbon dioxide contained in the source gas.

Gasification: An Alternative to Natural Gas

Abstract: The Conference, organized by the Institution of Chemical Engineers in association with the Institute of Energy, was held at the City Conference Centre in London on 22-23 November 1995. Approximately 200 delegates attended, some 40 per cent from overseas. Presentations of papers were in six sessions over the two days covering the gasification process, air versus oxygen gasification, applications-today and tomorrow, and waste and biomass. A poster session of 12 exhibits was also on display. The prime driving force for the development of gasification is the introduction of increasingly stringent environmental standards. Papers by HMIP rang with acronyms, stoutly defending the policies of BATNEEC, BPEO and IPC. HMIP consider that there are environmentally better ways of producing electricity than from large steam turbines supplied by fossil-fired boilers. They conclude that there is a certain inevitability about gasification process development. To realize commercially viable power systems, however, it was generally agreed that close integration of gasifier and power cycle was necessary in a combined cycle format (IGCC). Several papers pointed out that investment costs of TGCC are around US%1500/kW, some 20-30 per cent higher than conventional PF plant with flue gas scrubbing, and that significant problems remain to be solved. Strong arguments were expressed in several papers in favour of oxygen-blown as opposed to air-blown gasification systems. It was also demonstrated that close integration can severely limit operating flexibility and that sophisticated control systems require developing. Demonstration plant experience was described i n papers on the Wabash River Project (Dow), Demkolec (Shell), Polk and others (Texaco). Today's applications (Sasol, Lurgi, Texaco, etc.) tended to be based on special circumstances of fuel availability and the use of chemiical by-products. A paper from EPRI described IGCC power systems as longer term options which, for developing countries with large coal reserves, may fin'd early application in co-generation and production of gas, chemicals, etc. A review of hot-gas clean-up by PowerGen concluded that this essential component of a high-efficiency IGCC power generation system had not yet been adequately demonstrated.

Production of substitute natural gas

Abstract: PURPOSE:To produce a substitute natural gas (SNG) at a low cost by using a steam reforming catalyst having carbon and sulfur resistances CONSTITUTION:This method for producing an SNG is to support ruthenium on an activated aluminum composite carrier containing an oxide of a metal such as group IIa, then carry out the reduction treatment, use the resultant steam reforming catalyst and a raw material with <=05ppm sulfur content and regulate the S/C ratio to 07-08without comprising a desulfurization reactor and a recycle gas compressor in a process constitution in the method for producing the SNG from the raw material hydrocarbon according to the steam reforming reaction Furthermore, the method for producing the SNG is to deeply desulfurize the raw material hydrocarbon with a desulfurization catalyst and then carry out the steam reforming at 05-07S/C ratio