Methyl ethers of polyalkoxylated polyols for removing acidic gases from gases

Claim 2

A process for removing gaseous acid gases of the group consisting of carbon dioxide and hydrogen sulfide from admixture with other gases selected from the group consisting of hydrogen, nitrogen and lower alkane hydrocarbons, which comprises contacting the gaseous admixture at superatmospheric pressure with a solvent comprising a polymethyl etHer of a polyether polyol, said polyether polyol having the formula wherein R is the residue of an organic compound containing therein three to six active hydrogen atoms present in hydroxyl groups, A is a number from 1 to 6, B is a number from 0 to 5 and A + B equals 3 to 6, and Y represents from 1 to 15 groups or such groups in admixture and said polymethyl ether contains at least three methyl ether groups per molecule, and then removing the dissolved acid gases from the enriched solvent.

Claim 3

A process for removing gaseous acid gases of the group consisting of carbon dioxide and hydrogen sulfide from admixture with other gases selected from the group consisting of hydrogen, nitrogen and lower alkane hydrocarbons, which comprises contacting the gaseous admixture at superatmospheric pressure with a solvent comprising a composition of the formula wherein X, Y and Z represent from O to 15 groups or such groups in admixture and the sum of X + Y + Z is 1 to 15, and A is 1 to 4.

Claim 4

A process according to claim 4 in which A is 1 and X, Y and Z are approximately the same number.

Claim 5

A process according to claim 4 in which the solvent is an ethoxylated glycerol trimethyl ether.

Claim 6

A process according to claim 4 in which the solvent is an ethoxylated propoxylated glycerol trimethyl ether.

Claim 7

A process for removing gaseous acid gases of the group consisting of carbon dioxide and hydrogen sulfide from admixture with other gases selected from the group consisting of hydrogen, nitrogen and lower alkane hydrocarbons, which comprises contacting the gaseous admixture at superatmospheric pressure with a solvent comprising a polymethyl ether of a polyether polyol, said polyether polyol having the formula wherein C is a number from 0 to 3, D is a number from 1 to 6, E is a number from 0 to 3, F is a number from 0 to 5 and C + D + E + F equals 3 to 6, Y represents from 1 to 15 groups or such groups in admixture in random or block arrangement, and R is the residue of an organic compound containing therein three to six active hydrogen atoms present in hydroxyl groups, and then removing the dissolved acid gases from the enriched solvent.