Multi-tube heat transfer system for the combustion of a fuel and heating of a process fluid and the use thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23C-005/08
F24J-001/00
출원번호
UP-0371888
(2006-03-09)
등록번호
US-7651331
(2010-02-24)
발명자
/ 주소
Veenstra, Peter
출원인 / 주소
Shell Oil Company
인용정보
피인용 횟수 :
2인용 특허 :
34
초록▼
A four-tube heating system for combusting a fuel and transferring the heat released therefrom to a process fluid. The heating system includes, a fuel introduction zone, a combustion zone, an oxidant introduction zone, and a process fluid zone, wherein the fuel introduction zone is defined by fuel in
A four-tube heating system for combusting a fuel and transferring the heat released therefrom to a process fluid. The heating system includes, a fuel introduction zone, a combustion zone, an oxidant introduction zone, and a process fluid zone, wherein the fuel introduction zone is defined by fuel introduction means for introducing fuel into the combustion zone that is defined by a reaction tube external to and surrounding the fuel introduction means, and wherein the oxidant introduction zone is defined by an oxidant introduction tube external to and surrounding the reaction tube, and wherein the process fluid zone is defined by a process tube external to and surrounding the oxidant tube.
대표청구항▼
That which is claimed is: 1. A process system, comprising: a fuel tube having a fuel tube length and a fuel tube wall that define a fuel introduction zone, wherein said fuel tube includes a distal end and a fuel inlet end for introducing a fuel into said fuel introduction zone, and wherein along sa
That which is claimed is: 1. A process system, comprising: a fuel tube having a fuel tube length and a fuel tube wall that define a fuel introduction zone, wherein said fuel tube includes a distal end and a fuel inlet end for introducing a fuel into said fuel introduction zone, and wherein along said fuel tube length and through said tube wall is a plurality of spaced apart apertures; a reaction tube having a reaction tube length and that is positioned external to and surrounding said fuel tube so as to thereby define a combustion zone along said fuel tube length, wherein said reaction tube has a reaction tube inlet end for receiving a preheated oxidant into said combustion zone and an exhaust end for discharging a combustion exhaust from said combustion zone, and wherein said plurality of spaced apart apertures provide for fluid communication between said fuel introduction zone and said combustion zone; an oxidant introduction tube having an oxidant introduction tube length and that is positioned external to and surrounding said reaction tube so as to thereby define an oxidant introduction zone along said reaction tube length, wherein said oxidant introduction tube has an oxidant introduction tube inlet end for introducing an oxidant into said oxidant introduction zone and an oxidant introduction tube outlet end for discharging said preheated oxidant from said oxidant introduction zone into said combustion zone through said oxidant introduction tube outlet end which is in fluid communication with said reaction tube inlet end, and wherein said oxidant introduction zone is in heat exchange relationship with said combustion zone; and a process tube that is positioned external to and surrounding said oxidant introduction tube so as to thereby define a process fluid zone along said oxidant introduction tube length of said oxidant introduction tube, wherein said process tube has a process fluid inlet end for introducing a process fluid into said process fluid zone and a process fluid outlet end for discharging a heated process fluid from said process fluid zone, and wherein said process fluid zone is in heat exchange relationship with said combustion zone. 2. A process system as recited in claim 1, wherein said apertures of said plurality of spaced apart apertures are spaced along said fuel tube length and are sized so as to provide for the introduction of increments of said fuel into said preheated oxidant within said combustion zone such that when said increments of said fuel are mixed with said preheated oxidant a combustion mixture is formed such that a combustion occurs that is not limited by the rate of mixing. 3. A process system as recited in claim 2, wherein the heat exchange relationship between said oxidant introduction zone and said combustion zone provides for the heating of said oxidant to yield said preheated oxidant. 4. A process system as recited in claim 3, wherein said heat exchange relationship between said process fluid zone and said combustion zone provides for the heating of said process fluid to yield said heated process fluid. 5. A process system as recited in claim 4, wherein the heat exchange relationship between said oxidant introduction zone and said combustion zone further provides for a preheated oxidant temperature of said preheated oxidant such that said combustion mixture has a combustion mixture temperature exceeding the auto-ignition temperature of said combustion mixture. 6. A process system as recited in claim 5, wherein said oxidant introduction zone is further characterized by an oxidant introduction zone geometry, wherein said fuel introduction zone is further characterized by a fuel introduction geometry, wherein said fuel introduction geometry and said oxidant introduction zone geometry are such as to provide for a fuel velocity and a preheated oxidant velocity that prevent the formation of a flame during said combustion. 7. A method, comprising: introducing a fuel into a fuel tube having a fuel tube length and a fuel tube wall that define a fuel introduction zone, wherein said fuel tube includes a distal end and a fuel inlet end for introducing said fuel into said fuel introduction zone, and wherein along said length and through said tube wall is a plurality of spaced apart apertures; introducing a preheated oxidant into a reaction tube having a reaction tube length and that is positioned external to and surrounding said fuel tube so as to thereby define a combustion zone along said fuel tube length, wherein said reaction tube has a reaction tube inlet end for receiving said preheated oxidant into said combustion zone and an exhaust end for discharging a combustion exhaust from said combustion zone, and wherein said plurality of spaced apart apertures provide for fluid communication between said fuel introduction zone and said combustion zone; introducing an oxidant into an oxidant introduction tube having an oxidant introduction tube length and that is positioned external to and surrounding said reaction tube so as to thereby define an oxidant introduction zone along said reaction tube length, wherein said oxidant introduction tube has an oxidant introduction tube inlet end for introducing said oxidant into said oxidant introduction zone and an oxidant introduction tube outlet end for discharging said preheated oxidant from said oxidant introduction zone into said combustion zone through said oxidant introduction tube outlet end which is in fluid communication with said reaction tube inlet end, and wherein said oxidant introduction zone is in heat exchange relationship with said combustion zone; introducing a process fluid into a process tube that is positioned external to and surrounding said oxidant introduction tube so as to thereby define a process fluid zone along said oxidant introduction tube, wherein said process tube has a process fluid inlet end for introducing said process fluid into said process fluid zone and a process fluid outlet end for discharging a heated process fluid from said process fluid zone, and wherein said process fluid zone is in heat exchange relationship with said combustion zone; discharging said heated process fluid from said process fluid zone; and discharging said combustion exhaust from said combustion zone.
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