IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0855642
(1977-11-29)
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발명자
/ 주소 |
- Paull Peter L. (Weston CT) McGann Rodney (Santa Cruz CA)
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출원인 / 주소 |
- Texaco Inc. (White Plains NY 02)
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인용정보 |
피인용 횟수 :
37 인용 특허 :
1 |
초록
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Sensible heat in the hot effluent gas stream leaving a partial oxidation gas generator for the production of gaseous mixtures comprising H2+CO i.e. synthesis gas, reducing gas, or fuel gas, is used at maximum temperature to heat a stream of gaseous heat transfer fluid comprising a portion of the pro
Sensible heat in the hot effluent gas stream leaving a partial oxidation gas generator for the production of gaseous mixtures comprising H2+CO i.e. synthesis gas, reducing gas, or fuel gas, is used at maximum temperature to heat a stream of gaseous heat transfer fluid comprising a portion of the product gas circulating in the substantially closed loop. The heat transfer fluid serves as the working fluid in a turbine that produces mechanical work, electrical energy, or both. Further, the heat transfer fluid leaving the turbine may be used to preheat hydrocarbonaceous feed and free-oxygen containing gas which is then introduced into the gas generator. Optionally, by-product superheated steam may be produced at high temperature levels for use in the gas generator and as the working fluid in an expansion turbine. The high steam superheat temperatures result in higher conversion efficiencies. A shell and tube heat exchanger in which cleaned and optionally purified generator gas is continuously bled from inside the tubes to the outside, or the reverse is employed. By this means a continuously flowing protective sheath or curtain of the comparatively cooler bleedstream is placed between the surfaces of the tubes and headers, if any, in the heat exchanger and the surrounding hot effluent gas stream from the gas generator which enters the heat exchanger at maximum temperature. The surfaces of the tubes and headers, if any, are thereby protected against corrosive gas attack and deposits of ash, slag, and soot. The bleedstream mixes with the effluent gas stream passing through the heat exchanger and a portion of this mixture is recycled as make-up.
대표청구항
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In the process for producing gaseous mixtures comprising H2, CO and containing at least one member of the group H2O, CO2, H2S, COS, CH4, N2, Ar, and particulate carbon, by the partial oxidation of a hydrocarbonaceous fuel, or liquid oxygenated hydrocarbonaceous fuel, or a slurry of solid carbonaceou
In the process for producing gaseous mixtures comprising H2, CO and containing at least one member of the group H2O, CO2, H2S, COS, CH4, N2, Ar, and particulate carbon, by the partial oxidation of a hydrocarbonaceous fuel, or liquid oxygenated hydrocarbonaceous fuel, or a slurry of solid carbonaceous fuel and water or a liquid hydrocarbon, with a free-oxygen containing gas and optionally in the presence of a temperature moderator, at a temperature in the range of about 1500°to 3500°F. and a pressure in the range of about 1 to 250 atmospheres absolute in the reaction zone of a free-flow noncatalytic gas generator, the improvement comprising: (1) continuously passing the raw effluent gas stream leaving the reaction zone of said gas generator through a first heat exchange zone comprising a shell and tube heat exchanger in heat exchange with a continuous stream of a gaseous heat transfer fluid from step (6), thereby cooling said hot effluent gas stream while simultaneously heating said gaseous heat transfer fluid; (2) continuously bleeding a portion of said gaseous heat transfer fluid into said hot stream of effluent gas in (1) by way of openings in the walls of said tubes, while placing a sheath or curtain of gaseous heat transfer fluid between the surface of said tubes and said stream of effluent gas; (3) cleaning and optionally purifying the mixture of effluent gas and said bleedstream portion of gaseous heat transfer fluid in a gas cleaning and purifying zone, producing a product gas stream; (4) introducing the stream of heated gaseous heat transfer fluid leaving said first heat exchange zone in (1) into a power developing means as the working fluid and thereby producing power; (5) cooling the exhaust stream of gaseous heat transfer fluid leaving the power developing means in (4) and compressing at least a portion of said cooled stream and at least a portion of the product gas stream from (3) to a pressure above that of the raw effluent gas stream in (1); and (6) recycling the compressed mixture of gases from (5) into the first heat exchange zone in (1) as said gaseous heat transfer fluid.
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