Recovery and utilization of normally gaseous olefins

Claim 1

A METHOD OF TREATING A GASEOUS STREAM COMPRISING MINOR AMOUNTS OF ETHYLENE AND PROPYLENE IN ADMIXTURE WITH OTHER GASEOUS HYDROCARBONS WHICH COMPRISES CONTACTING SAID GASEOUS STREAM WITH A PARTICLE-FORM DEHYDRATET CRYSTALLINE SODIUM ALUMINO-SILICATE SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS ETHYLENE AND PROPYLENE TO THE SUBSTANTIAL EXCLUSION OF OTHER NORMALLY GASEOUS HYDROCARBONS INSAID STREAM TO YIELD A GASEOUS RESIDUE HAVING A SUBSTANTIALLY REDUCED STHYLENE AND PROPYLENE CONTENT, DESORBING THE ADSORBED ETHYLENE AND PROPYLENE BY CONTACTING SAID ADSORBENT WITH GASEOUS ISOBUTANE AT AN ELEVATED TEMPERATURE TO YIELD A GASEOUS DESORPTION EFFLUENT CONSISTING ESSENTIALLY OF ISOBUTANE, ETHYLENE AND PROPYLENE, SUBSEQUENTLY SEPARATELY POLYMERIZING SAID PROPYLENE IN SAID GASEOUS EFFLUENT IN THE PRESENCE OF SAID ISOBUTANE AND ETHYLENE BY CONTACT EITH A SOLID PHOSPHORIC ACID TYPE POLYMERIZATION CATALYST TO YIELD A NORMALLY LIQUID PROPYLENE POLYMER AND A GASEOUS ADMIXTURE CONSISTING ESSENTIALLY O ETHYLENE AND ISOBUTANE, FRACTIONATING SAID GASEOUS ADMIXTURE TO SEPARATE A STREAM CONSISTING ESSENTIALLY OF ISOBUTANE AND A STREAM CONSISTING ESSENTIALLY OF ETHYLENE, EMPLOYING A PORTION OF SAID FRACTIONATED ISOBUTANE TO DESORB THE ADSORBED ETHYLENE AND PROPYLENE FROM SAID ADSORBENT, SEPARATELY POLYMERIZING A PORTION OF SAID FRACTIONATED ETHYLENE TO FORM AN ETHYLENE POLYMER, CONTACTING ANOTHER PORTION OF SAID FRACTIONATED ETHYLENE WITH ANOTHER PORTION OF SAID FRACTIONATED ISOBUTANE IN THE PRESENCE OF AN ALKYLATION CATALYST TO ALKYLATE SAID ISOBUTANE WITH ETHYLENE TO FORM A NORMALLY LIQUID ALKYLATE SUITABLE AS A GASOLINE COMPONENT.

Claim 2

A METHOD OF TREATING A GASEOUS STREAM COMPRISING MINOR AMOUNTS OF ETHYLENE AND PROPYLENE IN ADMIXTURE WITH OTHER GASEOUS HYDROCARBONS WHICH COMPRISES CONTACTING SAID GASEOUS STREAM WITH A PARTICLE-FORM DEHYDRATET CRYSTALLINE SODIUM ALUMINO-SILICATE SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS ETHYLENE AND PROPYLENE TO THE SUBSTANTIAL EXCLUSION OF OTHER NORMALLY GASEOUS HYDROCARBONS INSAID STREAM TO YIELD A GASEOUS RESIDUE HAVING A SUBSTANTIALLY REDUCED STHYLENE AND PROPYLENE CONTENT, DESORBING THE ADSORBED ETHYLENE AND PROPYLENE BY CONTACTING SAID ADSORBENT WITH GASEOUS ISOBUTANE AT AN ELEVATED TEMPERATURE TO YIELD A GASEOUS DESORPTION EFFLUENT CONSISTING ESSENTIALLY OF ISOBUTANE, ETHYLENE AND PROPYLENE, SUBSEQUENTLY SEPARATELY POLYMERIZING SAID PROPYLENE IN SAID GASEOUS EFFLUENT IN THE PRESENCE OF SAID ISOBUTANE AND ETHYLENE BY CONTACT EITH A SOLID PHOSPHORIC ACID TYPE POLYMERIZATION CATALYST TO YIELD A NORMALLY LIQUID PROPYLENE POLYMER AND A GASEOUS ADMIXTURE CONSISTING ESSENTIALLY O ETHYLENE AND ISOBUTANE, FRACTIONATING SAID GASEOUS ADMIXTURE TO SEPARATE A STREAM CONSISTING ESSENTIALLY OF ISOBUTANE AND A STREAM CONSISTING ESSENTIALLY OF ETHYLENE, EMPLOYING A PORTION OF SAID FRACTIONATED ISOBUTANE TO DESORB THE ADSORBED ETHYLENE AND PROPYLENE FROM SAID ADSORBENT, SEPARATELY POLYMERIZING A PORTION OF SAID FRACTIONATED ETHYLENE TO FORM AN ETHYLENE POLYMER, CONTACTING ANOTHER PORTION OF SAID FRACTIONATED ETHYLENE WITH ANOTHER PORTION OF SAID FRACTIONATED ISOBUTANE IN THE PRESENCE OF AN ALKYLATION CATALYST TO ALKYLATE SAID ISOBUTANE WITH ETHYLENE TO FORM A NORMALLY LIQUID ALKYLATE SUITABLE AS A GASOLINE COMPONENT.