| abstract |
A kind of method of being produced the synthesis gas stream of purifying by feed synthesis gas stream, described feed synthesis gas stream also comprises hydrogen sulfide, HCN and/or COS except comprising main ingredient carbon monoxide and hydrogen, the method comprises the following steps: (a) makes described feed synthesis gas stream and catalyst exposure remove HCN and/or COS under existing at steam/water in HCN/COS reactor, thus obtains the poor synthesis gas stream containing HCN and/or COS; B () at the temperature lower than sulphur fusing point, and compares H with effectively at enough solution and gasn 2 s be converted into sulphur and suppress sulphur deposition condition under, contact with the reactant aqueous solution containing organic acid Dissolvable Fe (III) inner complex by making the poor synthesis gas stream containing HCN and/or COS, hydrogen sulfide in this synthesis gas stream is converted into elemental sulfur, thus obtains the synthesis gas stream of depleted of hydrogen sulphide; C () from the synthesis gas stream removing carbonic acid gas of depleted of hydrogen sulphide, thus obtains the synthesis gas stream of purifying and is rich in COn 2 gas stream. |