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Apparatus for endothermic process with improved burners arrangement

一种燃烧器、端部燃烧的技术，应用在燃烧方法、燃烧设备、燃烧器等方向，能够解决加热缺乏均匀性等问题

Active Publication Date: 2017-06-23
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

[0030] Thus, there is a lack of uniformity in heating along the tube row, and the present invention aims to address the control of heat flux uniformity in top-fired SMRs (as well as bottom-fired SMRs) by limiting the jet flames that merge along the tube row this problem

Method used

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  • Apparatus for endothermic process with improved burners arrangement
  • Apparatus for endothermic process with improved burners arrangement
  • Apparatus for endothermic process with improved burners arrangement

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Embodiment Construction

[0068] As stated above, the present invention aims at proposing a top-fired or bottom-fired furnace for performing endothermic methods / processes / procedures - these furnaces operate in figure 1 The improved design of - shown in ; the purpose is to alleviate the temperature variation along the row of burners parallel to the tube row - along the X axis - due to the improved arrangement of the burners along the row of Subdivided to have the same power.

[0069] In order to be able to recognize and propose an optimal arrangement of burners along a row, many simulations have been performed for different arrangements of burners of the same power along a row of burners for multiple SMR plants.

[0070] The tool used to identify the optimal subdivision of the burner in the "typical span" is the tool used above to address the lack of uniformity in flame jet and tube temperature caused by existing designs.

[0071] A numerical simulation of a typical span of a top-fired SMR was performe...

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Abstract

The invention relates to an apparatus for an endothermic process with improved burners arrangement. According to the invention, a furnace for performing an endothermic process comprises tubes containing a catalyst for converting a gaseous feed, wherein tubes are positioned in rows inside the furnace, wherein burners are mounted between the tubes and between the tubes and the furnace walls parallel to the tubes row and wherein the burners rows and the tubes rows are ended by end walls and are divided into sections with the distance from the end burner to the end wall being B2W, the distance between two adjacent burners in the section being B2B, and half the distance in-between two sections being B2S, wherein the burners in the rows are arranged in such a way that the ratios B2B / B2W and B2B / B2S are greater than 1.3 thus limiting the occurrence of the flame merging phenomenon and reducing significantly the quadratic mean of the tube temperature profile.

Description

technical field [0001] This invention relates to the design of top or bottom fired furnaces for steam methane reforming (SMR) and other endothermic reactions such as cracking of hydrocarbon feedstocks in externally fired reactors. Background technique [0002] The SMR process / method is mainly based on the generation of hydrogen (H 2 ) reforming reaction of light hydrocarbons such as methane with a mixture of carbon monoxide (CO). The reaction is endothermic and slow and requires additional heat input as well as the presence of a catalyst. Typically, SMR reactor performance is limited by heat transfer rather than by the dynamics of the reaction. [0003] In industrial practice, SMR reactors generally comprise tubes placed inside a furnace, which are filled with catalyst, usually in the form of pellets, and fed with a process gas mixture of methane and steam. [0004] Several validated configurations are available such as figure 1 Furnace design shown with top firing (also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B17/00
CPCF27B17/00C01B2203/0233F23C5/08F23C13/00F23C2900/03002F23D14/84F27B17/0016F23C13/06
Inventor F·卡米-佩雷J·康塞斯D·图多拉施
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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