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公开(公告)号:US5030440A
公开(公告)日:1991-07-09
申请号:US381259
申请日:1989-07-18
申请人: Warwick J. Lywood , Martyn V. Twigg
发明人: Warwick J. Lywood , Martyn V. Twigg
CPC分类号: B01J8/06 , B01J8/0453 , C01B3/12 , C01B3/16 , C01B3/48 , C01B2203/0233 , C01B2203/0244 , C01B2203/0283 , C01B2203/0288 , C01B2203/0294 , C01B2203/0844 , C01B2203/0883 , C01B2203/0894 , C01B2203/1011 , C01B2203/1023 , C01B2203/1029 , C01B2203/1041 , C01B2203/1064 , C01B2203/1082 , C01B2203/1241 , C01B2203/143 , C01B2203/82
摘要: A gas stream containing hydrogen, carbon monoxide, and steam, and having a steam to dry gas molar ratio below 0.5 and a steam to carbon monoxide molar ratio above 0.5, and that has been formed at a temperature above 700.degree. C., is passed, at a temperature within the range 550.degree. to 650.degree. C., over an iron-free catalyst effective at such temperatures to catalyze the shift reaction. This effects some shift reaction thus increasing the amount of high grade heat that can be recovered from the gas. Also the hydrogen content of the gas is increased and the carbon monoxide to carbon dioxide ratio of the gas is decreased, thus decreasing the risk of hydrocarbon formation if the gas is subsequently subjected to a further shift reaction using an iron-oxide containing catalyst. Suitable catalysts comprise palladium and/or an oxide of an alkali, or alkaline earth, metal on a refractory support.
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公开(公告)号:US4758253A
公开(公告)日:1988-07-19
申请号:US60445
申请日:1987-06-11
IPC分类号: B01D20060101 , B01D53/04 , B01D53/047 , B01J19/30 , B01J20/28 , B01J23/78 , B01J37/08 , B01D53/06
CPC分类号: B01D53/0407 , B01J19/30 , B01J23/78 , B01J37/08 , B01D53/0462 , B01D53/047 , B01J2219/30223 , B01J2219/30296 , B01J2219/30416 , B01J2219/30475 , B01J2219/3085
摘要: A heat and mass exchange, pressure and/or thermal swing adsorption process using an adsorbent bed which consists of at least one unit having substantially parallel passages through it. Each unit has at least 20 passages per cm.sup.2 of its cross-sectional area, the number and cross-sectional area of the passages being such that each unit has a geometric void of not more than 0.45. The bed may be random packed or a close packed assembly or stack of units.
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公开(公告)号:US5228847A
公开(公告)日:1993-07-20
申请号:US808803
申请日:1991-12-18
摘要: A combustion process, e.g. for a gas turbine, comprises catalytically combusting part of a fuel/air feed in a preliminary catalyst body which has through passages and supports, or is composed of, a catalyst active for the combustion of the fuel. The resultant heated gas stream is then mixed with the remainder of the feed, and that mixture is combusted, e.g. catalytically in a main catalyst body. The amount of combustion occurring in the preliminary catalyst body is sufficient that combustion of the mixture of the heated gas stream and the remainder of the feed can be sustained at the desired operating conditions. Under those desired operating conditions combustion of the feed could not be sustained in the absence of the heating given by the combustion in the preliminary catalyst body. There may be more than one preliminary catalyst body. The preliminary catalyst body or bodies may also be provided with passages wherein combustion does not take place under the desired operating conditions so that those passages act as a bypass. Preferably the combustion passages of at least the first preliminary catalyst body are of such size, that at the normal operating conditions, the flow therethrough is laminar, whereas the flow through the passages of the main catalyst body, where employed, is turbulent.
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公开(公告)号:US4985231A
公开(公告)日:1991-01-15
申请号:US280964
申请日:1988-12-07
申请人: Warwick J. Lywood
发明人: Warwick J. Lywood
CPC分类号: B01J8/062 , C01B3/323 , C01B3/382 , C01B3/384 , C01B2203/0233 , C01B2203/0238 , C01B2203/0244 , C01B2203/0283 , C01B2203/0811 , C01B2203/0816 , C01B2203/0844 , C01B2203/0866 , C01B2203/0883 , C01B2203/0894 , C01B2203/1052 , C01B2203/1082 , C01B2203/1223 , C01B2203/1241 , C01B2203/1247 , C01B2203/1258 , C01B2203/142 , C01B2203/143 , C01B2203/82
摘要: A mixture (34) of a hydrocarbon feedstock with steam and/or carbon dioxide is preheated and adiabatically steam reformed giving a partially reformed gas (26) which is then, optionally after reheating, further steam reformed inannular catalyst regions (32) of a double tube reformer (14). The outer tubes (28) of the double tube reformer are heated by a hot gas stream (12), e.g. in a fired furnace or by the hot gas stream produced by subjecting the reformed gas withdrawn from the inner tubes (30) of the double tube reformer to secondary reforming. The preheating (18), and the reheating (20), if any, is effected by indirect heat exchange with a hot gas after the latter has heated the outer tubes of the double tube reformer and/or with the reformed gas.
摘要翻译: 烃原料与蒸汽和/或二氧化碳的混合物(34)被预热并绝热蒸汽重整,得到部分重整气体(26),然后任选地在再加热之后进一步蒸汽重整双重催化剂区域(32) 管重整器(14)。 双管重整器的外管(28)由热气流(12)加热,例如, 在烧制炉中或通过将从双管重整器的内管(30)排出的重整气体进行二次转化而产生的热气流。 如果有的话,预热(18)和再加热(20)通过与热气体在双管重整器的外管和/或重整气体加热后进行间接热交换来实现。
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公开(公告)号:US5048284A
公开(公告)日:1991-09-17
申请号:US378070
申请日:1989-07-11
CPC分类号: C01B3/386 , B01J8/0453 , B01J8/0492 , B01J8/0496 , F02B43/10 , F02C3/20 , B01J2208/0007 , B01J2208/00088 , B01J2208/0015 , B01J2208/00212 , B01J2208/00256 , B01J2208/00371 , B01J2208/00495 , B01J2208/00504 , B01J2208/0053 , C01B2203/0233 , C01B2203/0244 , C01B2203/0261 , C01B2203/06 , C01B2203/0811 , C01B2203/0822 , C01B2203/0827 , C01B2203/0844 , C01B2203/0866 , C01B2203/1023 , C01B2203/1052 , C01B2203/107 , C01B2203/1241 , C01B2203/1276 , C01B2203/142 , C01B2203/143 , C01B2203/148 , C01B2203/1604 , C01B2203/80 , C01B2203/82 , Y02P20/128 , Y02T10/32
摘要: At least during some part-load operation of a gas turbine wherein a fuel gas is combusted with air with the formation of a flame and the combustion products are let down through a turbine, the fuel gas comprises the product of a stage of catalytic autothermal steam reforming of a light hydrocarbon feedstock gas and the amount of air fed to the gas turbine combuster, relative to the amount of hydrocarbon fed to the catalytic autothermal steam reforming stage, is greater than the maximum amount of air that enables a flame to be sustained in said combustor if that amount of hydrocarbon were to be fed directly to the combustor.
摘要翻译: 至少在燃气轮机的一些部分负载运行期间,其中燃料气体与形成火焰的空气一起燃烧并且燃烧产物通过涡轮机通入,燃料气体包括催化自热蒸汽阶段 轻烃原料气体的重整和供给到燃气轮机燃烧器的空气量相对于进料到催化自热蒸汽重整段的烃的量大于能够维持火焰的最大空气量 如果将该量的烃直接供给到燃烧器,则说明燃烧器。
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公开(公告)号:US5300275A
公开(公告)日:1994-04-05
申请号:US928628
申请日:1992-08-12
申请人: Warwick J. Lywood
发明人: Warwick J. Lywood
CPC分类号: C01B3/382 , C01B2203/141 , C01B2203/142
摘要: A process for the production of a hydrogen containing gas stream comprises partially reforming a feed stream containing hydrocarbon feedstock to be reformed together with a steam and/or carbon dioxide as reforming gas by passage of said feed stream over a steam reforming catalyst disposed in heated auxiliary tubes, thereby forming a partially reformed gas stream; subjecting the partially reformed gas stream, optionally together with a further quantity of said feedstock and/or reforming gas, to further reforming by passage over a steam reforming catalyst disposed in furnace reformer tubes heated by combustion of a fuel, thereby forming a reformed product gas stream; and passing the reformed product gas stream past the exterior of the auxiliary tubes, thereby supplying heat to said auxiliary tubes and cooling the reformed product gas stream.
摘要翻译: 一种生产含氢气流的方法包括通过将所述进料流通过设置在加热助剂中的蒸汽重整催化剂,将含有烃原料的进料流部分重整以与作为重整气体的蒸汽和/或二氧化碳一起重整 管,从而形成部分重整气流; 将部分重整的气流,任选地与另外数量的所述原料和/或重整气体一起经过设置在由燃料燃烧加热的炉重整器管中的蒸汽重整催化剂进一步重整,从而形成重整产物气体 流; 并使重整产物气流通过辅助管的外部,从而向所述辅助管提供热量并冷却重整产物气流。
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公开(公告)号:US5030661A
公开(公告)日:1991-07-09
申请号:US328010
申请日:1989-03-23
申请人: Warwick J. Lywood
发明人: Warwick J. Lywood
IPC分类号: C01B3/38
CPC分类号: C01B3/384 , C01B3/382 , C01B2203/0233 , C01B2203/0405 , C01B2203/0495 , C01B2203/0805 , C01B2203/0816 , C01B2203/0866 , C01B2203/1241 , C01B2203/1247 , C01B2203/141 , C01B2203/146 , C01B2203/148
摘要: A process for the production of a hydrogen containing gas stream comprises catalytic steam reforming of a major hydrocarbon/steam stream in tubes heated by means of a fired furnace and catalytic steam reforming of a minor hydrocarbon/steam stream in auxiliary tubes heated by the reformed major stream, and mixing the reformed minor stream with the reformed major stream.
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公开(公告)号:US4910228A
公开(公告)日:1990-03-20
申请号:US307907
申请日:1989-02-09
申请人: Warwick J. Lywood
发明人: Warwick J. Lywood
IPC分类号: C01B3/38 , C07B61/00 , C07C29/151 , C07C29/152 , C07C29/78 , C07C31/04
CPC分类号: C07C29/1518 , Y02P20/131
摘要: A single pressure process for the production of methanol wherein the make-gas is produced by steam reforming a hydrocarbon feedstock, in admixture with recycled purge gas from the synthesis loop, at such a pressure that the make-gas can be fed without further compression, to the synthesis loop at a pressure no lower than the pressure at the inlet to said circulator. The reforming is effected by primary steam reforming followed by partial oxidation with oxygen and secondary reforming, without any bypass of the feedstock of the primary reforming stage, so as to give a make-gas of approximately stoichiometric composition for methanol synthesis. The primary reforming is effected at above 55 bar abs. over a catalyst disposed in tubes heated by passing the secondary reformed gas stream past the external surfaces of the reformer tubes in a direction counter-current to the flow of reactants undergoing primary reforming in said reformer tubes. In this way heat is transferred from said secondary reformed gas stream through the walls of said tubes to supply the endothermic heat of the steam reforming reaction.In preferred forms of the process the steam is incorporated into the feed to the reformer by saturation and the excess of steam is removed from the reformed gas by direct contact with cold water: in this way a high pressure steam system recovering power from the reformed gas is not needed.
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