Recovery of LNG, Ar, N2+H2 from boiling gas of ammonia tank and vent gas of synthesis column;
LN washing device;
Recovery of CO, LNG, Ar and CO2 from off gas of acetic acid(consisting of about 75% CO);
Recovery of H2, CO, LNG from off gas of coke oven(mainly consisting of H2, CH4, CO);
Separation of CO2, CO, CH4, H2, N2, Ar, He etc. from off gas;