A process for gas-heated reforming of a hydrocarbon source and related equipment

A gas and hydrocarbon source technology, applied in chemical instruments and methods, hydrogen/synthesis gas production, inorganic chemistry, etc., can solve problems such as low efficiency, catalyst low efficiency, process optimization constraints, etc., to achieve high equipment efficiency, reduce pressure drop, effective heat transfer

Inactive Publication Date: 2015-02-11
CASALE SA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this introduces significant constraints in terms of process optimization
[0007] Another disadvantage is the low efficiency of said catalysts, usually below 10%, affected by the diffusion process of the feed gas into the pores of the catalyst
This low efficiency means that 90% or more of the catalyst is not actually used

Method used

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  • A process for gas-heated reforming of a hydrocarbon source and related equipment
  • A process for gas-heated reforming of a hydrocarbon source and related equipment
  • A process for gas-heated reforming of a hydrocarbon source and related equipment

Examples

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Embodiment Construction

[0036] refer to figure 1 , the equipment for steam reforming includes a reforming furnace 10 , a combustion furnace 11 and a preheater 12 . The reformer 10 comprises a bundle of tubes 13, preferably made of ceramic material. The tubes 13 are preferably straight tubes supported by two opposing tube sheets 14,15.

[0037] The reformer 10 has the following main connections: an air inlet 23 and an air outlet 24 for communicating with the tube side (ie, the inside of the tube 13 ); an air inlet 25 and an air outlet 26 for communicating with the shell side. Preferably, as shown in the figure, the tube side inlet 23 is at the top of the reformer and the tube side gas outlet 24 is at the bottom; the shell side inlet 25 is at the lower part of the shell side and the shell side outlet 26 is at the upper part of the shell side. However, different settings are also possible.

[0038] A gas source 16 comprising a hydrocarbon source and steam is heated in a preheater 12 and enters the re...

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Abstract

A process and equipment for steam reforming of a hydrocarbon source gas, where the hydrocarbon source gas and a steam flow are partially reformed while passing in a bundle of tubes (13) of a reformer (10), with a catalytically active inner surface; a partially reformed product gas (18) leaving said tubes is mixed with an oxidation agent (19) and subject to a combustion process; a combusted partially reformed gas (20) is introduced in the shell side of said reformer and further reformed by contact with the outer surface of said tubes (13), said outer surface of the tubes being also catalytically active.

Description

technical field [0001] The present invention relates to the reforming of hydrocarbon sources, such as steam reforming of natural gas or steam methane reforming, using a gas heated reformer. Background technique [0002] Reforming is a well known technique for converting hydrocarbon sources into useful products. Steam reforming of natural gas or alternative natural gas is a process of converting methane into gas containing carbon monoxide (CO) and hydrogen (H 2 ) common way of synthesis gas. The synthesis gas can be targeted for a specific use, such as make-up gas for ammonia synthesis. [0003] A typical prior art design includes a gas heated reformer (GHR) combined with an autothermal reformer (ATR). The GHR is essentially a tubular gas-to-gas heat exchanger comprising a bundle of tubes filled with catalyst. The tubes are usually made of high nickel alloys. [0004] The first stage of the reforming process takes place in the tubes of the GHR, which are usually external...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/38
CPCC01B2203/0844C01B2203/1035C01B2203/068C01B2203/1241C01B3/384C01B2203/142C01B2203/025C01B2203/143B01J2219/00157B01J2219/00117C01B3/36C01B2203/0233B01J8/065B01J2208/00893C01B2203/0255C01B2203/0833C01B2203/1235
Inventor 加布里埃莱·杰尔马尼恩里科·里齐
Owner CASALE SA
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