[특허]Support structure for a catalyst in a combustion reaction chamber

General Electric Company

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특허 상세정보

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Support structure for a catalyst in a combustion reaction chamber

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-003/00 F23R-003/40
미국특허분류(USC)	600/390.6 ; 607/23 ; 600/393.2 ; 43/100.7 ; 50/252.7
출원번호	US-0462639 (1995-06-05)
발명자 / 주소	Dalla Betta Ralph A. Schlatter James C. Cutrone Martin Bernard Beebe Kenneth Winston
출원인 / 주소	General Electric Company
대리인 / 주소	Jecminek
인용정보	피인용 횟수 : 73 인용 특허 : 17

초록
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A support structure for securing a catalyst structure comprising a multiplicity of longitudinally disposed channels for passage of a flowing gas mixture within a reactor, said support structure being comprised of a monolithic open celled or honeycomb-like structure formed by thin strips or ribs of high temperature resistant metal or ceramic which abuts against one end of the catalyst structure, and extends in a direction perpendicular to the longitudinal axis of the catalyst structure to essentially cover an end face (at either the inlet end or outlet end or both) of the catalyst structure with the support structure being secured on its periphery to the reactor wall. The strips or ribs making up the support structure are bonded together to form a unitary structure having cellular openings at least as large as the catalyst structure channel openings. The cellular openings in the support structure are also positioned to be in fluid communication with the channels of the catalyst structure thus affording essentially unaltered gas flow from the catalyst structure through the support structure.

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[ We claim as our invention:] [1.] A support structure for securing within a combustion reaction chamber, defined by a reaction chamber wall, a monolithic catalyst structure made up of a multiplicity of longitudinally disposed channels with inlet and outlet ends for passage of a flowing gas mixture, which exerts an axial load on the catalyst structure in the direction of gas flow, with the catalyst structure having a longitudinal axis in the direction of gas mixture flow, said support structure comprising a monolithic open cellular structure wherein the walls of the cells are formed by strips of a high temperature resistant metal or ceramic material to afford cellular openings which are at least as large as the openings formed by the catalyst structure channels at their inlet and outlet ends, said monolithic open cellular structure being:(a) placed at the outlet end of catalyst structure, or at both the inlet end and the outlet end of the catalyst structure;(b) positioned and configured to abut against one end of the catalyst structure and extend in a direction perpendicular to the longitudinal axis of the catalyst structure to essentially cover the end face of the catalyst structure, with the cellular openings of the monolithic open cellular structure being in fluid communication with the channels of the catalyst structure; and(c) secured on an outer periphery to the reaction chamber wall by an attachment means fixed to the reaction chamber wall which holds the monolithic open cellular structure in place while allowing for differential thermal expansion of the monolithic open cellular structure in an outward direction towards the reaction chamber wall such that the axial load which is placed on the monolithic open cellular structure by the catalyst structure on passage of the flowing gas mixture is transferred to the reaction chamber wall thereby limiting axial movement of said catalyst structure in a direction parallel to the longitudinal axis of said catalyst structure. [15.] A method for securing within a combustion reaction chamber defined by a reaction chamber wall, a monolithic catalyst structure made up of a multiplicity of longitudinally disposed channels with inlet and outlet ends for passage of a flowing gas mixture and having a longitudinal axis in the direction of gas mixture flow, said flowing gas mixture exerting an axial load on the catalyst structure, which comprises inserting into the reaction chamber at the outlet end of the catalyst structure or at both the outlet end and inlet end of the catalyst structure, a monolithic open cellular structure in which the walls of the cells are formed by strips of a high temperature resistant metal or ceramic material to afford cellular openings which are at least as large as the openings formed by the catalyst structure channels at their inlet and outlet ends, said monolithic open cellular structure being:(a) positioned and configured to abut against one end of the catalyst structure and extend in a direction parpendicular to the longitudinal axis of the catalyst structure to essentially cover the end face of the catalyst structure, with the cellular openings of the monolithic open cellular structure being in fluid communication with the channels of the catalyst structure; and(b) secured on an outer periphery to the reaction chamber wall by an attachment means fixed to the reaction chamber wall which holds the monolithic open cellular structure in place while allowing differential thermal expansion of the monolithic open cellular structure in an outward direction towards to reaction chamber wall such that the axial load which is placed on the monolithic open cellular structure by the catalyst structure on passage of the flowing gas mixture is transferred to the reaction chamber wall thereby limiting axial movement of said catalyst structure. A process for the combustion of a hydrocarbonaceous or other combustible fuel to form a hot gas product wherein the fuel is at least partially combusted, the process comprising the steps of:(a) forming a mixture of the fuel with an oxygen-containing gas; and(b) passing the oxygen-containing gas and fuel mixture as a flowing gas stream through a monolithic catalyst structure positioned in a combustion reaction chamber defined by a reaction chamber wall, said catalyst structure made up of a multiplicity of longitudinally disposed channels for passage of said flowing gas stream and having a longitudinal as in the direction of gas mixture flow, said catalyst structure being stablized in said reaction chamber by means of a monolithic open cellular structure in which the walls of the cells are formed by strips of a high temperature resistant metal or ceramic material to afford cellular openings which are at least as large as the openings formed by the catalyst structure channels at their inlet and outlet ends, said monolithic open cellular structure being:(i) placed at the outlet end of catalyst structure or at both the inlet end and the outlet end of the catalyst structure;(ii) positioned and configured to abut against one end of the catalyst structure and extend in a direction perpendicular to the longitudinal axis of the catalyst structure to essentially cover the end face of the catalyst structure, with the cellular openings of the monolithic open cellular structure being in fluid communication with the channels of the catalyst structure; and(iii) secured on an outer periphery to the reaction chamber wall by an attachment means fixed to the reaction chamber wall which holds the monolithic open cellular structure in place while allowing for differential thermal expansion of the monolithic open cellular structure in an outward direction towards the reaction chamber wall thereby limiting the axial movement of said catalyst structure parallel to the longitudinal axis of said catalyst structure. The process of claim 16 wherein the monolithic open cellular structure is placed at the outlet end of the catalyst structure. The process of claim 16 wherein the monolithic open cellular structure is placed at both the inlet end and the outlet end of the catalyst structure. The process of claim 16, 17 or 18 wherein the cells of the open cellular structure are polygonal, elliptical or circular in shape.

이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 73

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Support structure for a catalyst in a combustion reaction chamber

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Support structure for a catalyst in a combustion reaction chamber

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이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 73

IPC 상위 출원인

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