METHOD FOR OBTAINING AND PURIFYING SYNTHESIS GAS Russian patent published in 2018 - IPC B01D53/04 F25J3/06 C10K1/00 C01B3/56 

FIELD: technological processes.

SUBSTANCE: invention relates to a method for production and purification of synthesis gas containing CO, H₂, CO₂, CH₄, H₂O and N₂. Method includes the stages of obtaining CO- and H₂-containing synthesis gas flow from hydrocarbon-containing feedstock, separating at least CO₂ from the flow of synthesis gas and cryogen releasing of CO from the flow of synthesis gas. CO₂ is separated from the synthesis gas flow using adsorption at a variable temperature, upstream relative to the cryogenic separation of CO to less than 10 million^-1 by volume. Saturated adsorbent is regenerated by indirect heat transfer from the coolant medium to the adsorbent. CO₂ desorption occurs at a pressure in the range from 0.5 to 9 MPa, preferably from 1.5 to 6 MPa. CO₂ after desorption is returned to the device for producing synthesis gas as a reagent. Downstream relative to adsorption at a variable temperature, additional adsorption can be carried out at a variable temperature to separate the remaining CO₂ from the synthesis gas flow.

EFFECT: provided economical production of synthesis gas without the need for gas washing.

5 cl, 3 dwg