The refinery industry is an energy⁃intensive industry. So the efficient recycle and utilization of light hydrocarbon gases will solve the difficulties of energy conservation and environmental protection.The adsorption and the adsorption⁃hydration method were applied to separate C2 from the simulated refinery dry mixture gas of M1(C2H6(11.55%)+C2H4(12.46%)+CH4(29.15%)+N2(27.02%)+H2(19.82%)).The collected mixture gas M2 was secondary separated by ZIF⁃8. The result showed that molar fraction of C2 was decreased to 9.90% after primary separation process using adsorption⁃hydration method.Because of the higher concentration of C2,the values of y_(C_2 ) and MC of product using the adsorption⁃hydration method were better than the adsorption method under the same initial pressure. Because the molar fraction of C2 in M2 was low, the hydrate was difficult to be formed in the system of M2, and the adsorption method with dry ZIF⁃8 was proved to be adaptive to separate the gas mixture of M2 to avoid the negative effects of water in the system of wet ZIF⁃8. Through the two⁃step separation process, the molar fraction of C2 in M1 was decreased from 24.01% to 2.90%.

Five kinds of hydrophobic association hydrogel are synthesized with the method of free⁃radical solution polymerization, in which the hydrophilic monomer is acrylic amide (AM), hydrophobic monomers are octadecyl acrylate (C18) and dimethyacetamide(DMAC),the surfactants are lauryl sodium sulfate (SDS),tetrabutylammonium bromide (TBAB),cetyl trimethyl ammonium bromide (CTAB).The gas storage performance of CH4 and the water absorption capability for five hydrogels are measured. The experimental data has proven that the addition of TBAB or CTAB has a significant effect on the storage performance of hydrogels, and the best storage performance of CH4 is HC⁃SDS/TBAB. In addition,the addition of TBAB or CTAB has an obvious effect on the swelling ratio of hydrogel, and the swelling ratios of hydrogels with the addition of two kinds of surfactants are obviously lower than the one with the addition of a single surfactant (SDS).

The quaternized chitosan (QCS) was synthesized through the nucleophilic substitution reaction under the conditions was that the chitosan was material and the 2, 3epoxypropyl trimethyl ammonium chloride was etherifying agents. Dutch positive electricity glomerular polystyrene (PS) microemulsion was synthesized through the emulsion polymerization method and the hexadecyl trimethyl ammonium bromide was cationic quaternary ammonium salt and the potassium persulfate was initiator. Then the anion exchange membrane was synthesized by take the QCS as material and glutaraldehyde as crosslinking agent, at the same time the PS microemulsion was doping into the casting solution. The standard membrane structure was characterized by FTIR. The content of PS microspheres and glutaraldehyde influence on QCS/PS membrane’s water content and ionexchange capacity, etc properties. The results show that the crosslinking agent can effectively inhibit the QCS membrane’s deformation. When the quality percentage of PS microsphere was 35%, swelling ratio was reduced from 68.5% to 25.8% with the increase of crosslinking degree. But at the same time it reduce the QCS/PS membrane’s ionexchange capacity. And PS microspheres will be improved QCS/PS membrane ionexchange capacity, swelling ratio also will be reduced slightly. The water content is 65% and ionexchange capacity is 4.89 mmol/g when the crosslinking degree was 5% and the quality percentage of PS microsphere was 35%. QCS/PS membrane’s overall performance can be optimized.