Seeking advice on hydrogen production from methanol

Rather than asking others on the forum, it’s better to find some operating procedures to read by yourself.

Methanol conversion: Methanol and water are separately metered, mixed, and pressurized using a feed liquid metering pump before being fed into a vaporization tower where they are vaporized and superheated to the temperature required for the reaction. Subsequently, they are sent to a converter, where reactions such as methanol cracking and carbon monoxide conversion take place simultaneously within a fixed-bed catalytic reactor; the end product is a mixture of H2 and CO2. After the reaction, the mixed gas undergoes heat exchange with the raw materials through a heat exchanger to reduce heat loss. It is then condensed in a condenser, separated into gas and liquid phases in a gas-liquid separator, and freeze-dried to separate unreacted methanol and water, thereby ensuring that the methanol content in the pyrolysis gas meets the specified quality requirements for gas production, completing the gas production process. The condensed separation liquid is a mixture of methanol and water, which is all sent back to the raw material tank for reuse. Pressure swing adsorption: Pressure of methanol cracking gas fed into pressure swing adsorption: 1.60～1.65 MPa-g ； The pressure swing adsorption process in this scheme adopts a normal-pressure desorption operation mode of 5-1-2/P (5 adsorption towers, 1 tower in adsorption at a time, 2 pressure equalization steps). Each adsorption tower goes through nine steps in one cycle: adsorption (A), first pressure equalization (E1D), second pressure equalization (E2D), forward discharge (PP), reverse discharge (D), flushing (P), second pressure increase (E2R), first pressure increase (E1R), and final charging (FR).