Some issues with ammonia, methanol, and coal-based ethylene glycol production
Thread Content
I would like to ask the experienced experts: First, in the process of ammonia synthesis, the required raw materials are nitrogen and hydrogen. So, are pressure swing adsorption for hydrogen production and pressure swing adsorption for nitrogen production the main processes? Is the ammonia synthesis process also used in steel mills or in other situations where exhaust gases are recovered? Because the purification process of exhaust gases also includes hydrogen purification and nitrogen adsorption processes! ! II. In the processes of methanol and coal-based ethylene glycol production, is pressure swing adsorption the main process? Xiao Li, I would like to thank all the experienced masters here for their generous help. Please show me the way! Thank you
It’s not the main process in the first question! At least that’s the case in our unit. In the second question, the main process is mentioned, but pressure swing adsorption can be replaced by low-temperature liquid nitrogen washing, and it seems to be an emerging trend.
First question: So what kind of system is this main process? Can you talk about it? Second question: Could you explain the difference between low-temperature liquid nitrogen washing and pressure swing adsorption? In what aspects are the advantages mainly reflected?