Methanol Decomposition for Hydrogen Production Unit
Methanol in the temperature range of 220 to 300 degrees, cracking in the copper catalyst to generate hydrogen and carbon monoxide, carbon monoxide in the same catalyst under the reaction with steam to produce carbon dioxide, carbon dioxide is removed by pressure swing adsorption process, ultimately producing hydrogen. The reaction is: of CH3OH = 2H2 + CO, CO + H2O = H2 + CO2, and the total reaction: of CH3OH + H2O = 3H2 + CO2.Process principlesThe reaction is as follows:The main reaction: CH3OH = CO +2 H2 -90.7KJ/mol CO + H2O = CO2 + H2 +41.2 KJ / molThe overall reaction: CH3OH + H2O = CO2 +3 H2 -49.5KJ/molSide effects: 2CH3OH = CH3OCH3 + H2O +24.9 KJ / mol CO +3 H2 = CH4 + H2O +206.3 KJ / molReaction transforming the gas by the heat exchanger, cooling, condensing its compositionH2 CO2 CO CH3OH H2OSaturation of 73 ~ 74% 23 ~ 24.5% ~ 1.0% 300ppmThe main reaction is an endothermic reaction, the use of external heat conducting oil. Conversion of gas by the heat exchanger, cooling, condensing into the scrubber tower kettle collection not transformed after methanol and water recyclingTechnical indicatorsGas production: 2.5 ~ 300Nm3 / hImpurities: ≤ 10PPmWorking pressure: 0.05 ~ 1.0MPaPressure dew point: ≤ -40 ° C.
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How it works:Under some pressure due to dynamic effects, oxygen diffusion rate of nitrogen in carbon molecular sieve differences, within a short time, the oxygen molecules of carbon molecular sieve a
How it works:Under some pressure due to dynamic effects, oxygen diffusion rate of nitrogen in carbon molecular sieve differences, within a short time, the oxygen molecules of carbon molecular sieve a
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