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Maximizing steam methane reformer combustion efficiency by pre-heating pre-reformed fuel gas

一种预重整器、预重整的技术，应用在燃料、气体燃料、气体处理等方向，能够解决没有披露燃料气体预加热的方法、没有披露实现方式等问题

Active Publication Date: 2019-09-10
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Grover does not disclose the detailed implementation and does not disclose the method of preheating of the fuel gas

Method used

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  • Maximizing steam methane reformer combustion efficiency by pre-heating pre-reformed fuel gas
  • Maximizing steam methane reformer combustion efficiency by pre-heating pre-reformed fuel gas
  • Maximizing steam methane reformer combustion efficiency by pre-heating pre-reformed fuel gas

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Embodiment Construction

[0039] Although the present invention will be described in conjunction with several embodiments, it should be understood that it is not intended to limit the present invention to those embodiments. On the contrary, the intention is to cover all alternatives, modifications, and equivalents that can be included within the spirit and scope of the invention as defined by the appended claims.

[0040] There have been many efforts to improve the thermal efficiency of standard SMR. A pinch analysis shows that the standard SMR has been sufficiently thermally optimized, and therefore, further improvements related to heat exchanger design are unlikely to result in substantial improvements. However, embodiments of the present invention can advantageously improve the hitherto known methods by recovering waste heat more efficiently without attempting to re-optimize the process by overcoming the temperature pinch point.

[0041] The disclosed embodiments provide a direct method that uses a low ...

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Abstract

An improved hydrogen generation system and method for using the same are provided. The system includes an HDS unit configured to remove sulfur, a first and second pre-reformers configured to pre-reform a process gas and fuel gas, respectively, a first and second heat exchangers configured to dry and heat the pre-reformed fuel gas, respectively, and a reformer configured to produce a syngas and flue gas. The method includes using a process stream selected from the group consisting of air, PSA off-gas, hydrocarbon gas, and combinations thereof to dry the fuel gas and using a process stream selected from the group consisting of the flue gas, the syngas, and combinations thereof to heat the dry fuel gas. The second pre-reformer is a low-pressure pre-reformer, so that the heat contents of the fuel gas is increased through converting heavy hydrocarbons in the fuel gas to CO and H2 by the second pre-reformer.

Description

Technical field [0001] A system and method for maximizing combustion efficiency in a steam methane reformer (SMR) by preheating a pre-reformed fuel gas for desulfurization is disclosed. In particular, the desulfurized fuel gas is pre-reformed at a lower pressure than the process gas, and the desulfurized pre-reformed fuel gas is cooled to remove water, and then heated before being burned in the burner of the reformer . Background technique [0002] In a large SMR, approximately 50% of the heat input from the burner is transferred to the SMR reforming tube to provide energy to drive the endothermic steam methane reforming reaction. To produce syngas (CO+H 2 ). Since the reforming reaction is usually carried out at a high temperature (for example, 750°C to 950°C), the temperature of the flue gas from the burner is usually at or above this temperature. At present, the main purpose of high-temperature flue gas is to generate steam and / or preheat combustion air through a waste hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/38C01B3/56
CPCC01B3/382C01B3/384C01B2203/0227C01B2203/0283C01B2203/043C01B2203/0811C01B2203/0883C01B2203/127C01B2203/141C01B2203/142Y02P20/129C01B3/56B01D53/047B01D53/265B01D2256/16B01D2257/502C01B3/36C01B2203/0255C01B2203/042C01B2203/047C01B2203/1241C01B2203/1258C10L3/103
Inventor 姜泰宇樊蓉帕沃尔·普兰达罗伯特·A·加利亚诺小本杰明·J·朱尔奇克
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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