Methanol steam hydrogen production technology by using catalytic combustion flue gas as heat source

Abstract

The invention discloses a methanol steam hydrogen production technology by using catalytic combustion flue gas as a heat source, relating to a hydrogen production technology, and aiming to solve the problem that tail gas is discharged but is not utilized to result in resource waste in the traditional methanol steam hydrogen production technology. Methanol and desalted water as raw materials are orderly preheated, gasified, overheated and converted to obtain converted gas; then the converted gas is adsorbed at variable pressure, the product hydrogen is obtained, and tail gas is discharged, wherein the heat quantity is supplied by heat conducting oil in the converting procedure, the tail gas generates the heat quantity through catalytic combustion and conducts the heat quantity to the heat conducting oil in a heat conducting system.

Description

technical field [0001] The invention relates to a hydrogen production process, in particular to a hydrogen production process from methanol steam. Background technique [0002] The methanol steam reforming hydrogen production device uses methanol and desalted water as raw materials under certain temperature and pressure conditions. With the help of the catalyst in the methanol steam reforming reactor, the raw material and water vapor are produced in the reformer tube. Conversion reaction to produce synthetic ammonia raw material gas (ie hydrogen). [0003] Such as figure 1 As shown, in the currently widely used process, the raw material methanol and desalted water are first prepared in a certain proportion, and under pressurized conditions, they go through the steps of preheating, gasification, and superheating respectively, and the superheated raw material mixture is carried out in the converter Gas-phase catalytic conversion reaction to obtain reformed gas, in which H 2...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the waste of resources caused by emptying the tail gas without utilizing it in the existing methanol water vapor hydrogen production process, and to provide an improved methanol water vapor hydrogen production process, which uses catalytic combustion to generate the exhausted tail gas Heat to heat the heat transfer oil in the heat transfer oil system to supply the heat required for the previous conversion process, so that the tail gas can be effectively used and the energy cost can be greatly reduced

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