Method to analyze alkylate products (Chevron)

CATEGORY: GASOLINE 
Method to analyze alkylate products (Chevron)

Type	Patent
Inventor	Hye Kyung Cho Timken
Inventor	Izadyar Dalvand
URL	Free Full Text Source:  http://www.google.com/patents/US20140174151
Assignee	Chevron U.S.A. Inc.
Patent Number	US20140174151 A1
Issue Date	Jun 26, 2014
Abstract	We provide an extracted conjunct polymer naphtha (45), comprising a hydrogenated conjunct polymer naphtha, from a used ionic liquid catalyst, having a final boiling point less than 246° C.(475° F.), a Bromine Number of 5 or less, and at least 30 wt % naphthenes. We also provide a blended alkylate gasoline (97 comprising the extracted conjunct polymer naphtha (45), and integrated alkylation processes to make the extracted conjunct polymer naphtha (45) and the blended alkylate gasoline (97). We also provide a method to analyze alkylate products, by determining an amount of methylcyclohexane in the alkylate products (80). BACKGROUND High-quality alkylate gasolines are needed for spark-ignited automotive engines. It is desired that new or more efficient processes be developed to produce these gasolines, and that these gasolines have improved qualities. cl SUMMARY This application provides an extracted conjunct polymer naphtha (45), comprising a hydrogenated conjunct polymer, from a used ionic liquid catalyst, having a final boiling point less than 246° C. (475° F.), a Bromine Number of 5 or less, and at least 30 wt % naphthenes. This application provides a blended alkylate gasoline (97), comprising an extracted conjunct polymer naphtha (45) and alkylate products (80), wherein the extracted conjunct polymer naphtha (45) has a final boiling point less than 246° C. (475° F.), a Bromine Number of 5 or less, and at least 30 wt % naphthenes. This application provides an extracted conjunct polymer naphtha (45), made by a process comprising: a. regenerating a used ionic liquid catalyst comprising a conjunct polymer in a hydrogenation reactor (100) to make a regenerated catalyst effluent (10); b. mixing the regenerated catalyst effluent (10) or a separated liquid from the regenerated catalyst effluent (10) with a conjunct polymer extraction solvent (55); and c. separating out the conjunct polymer extraction solvent (55) to produce the extracted conjunct polymer naphtha (45); wherein the extracted conjunct polymer naphtha (45) has a final boiling point less than 246° C. (475° F.), a Bromine Number of 5 or less, and at least 30 wt % naphthenes. This application also provides a blended alkylate gasoline (97), made by a process comprising: a. regenerating a used ionic liquid catalyst comprising a conjunct polymer in a hydrogenation reactor (100) to make a regenerated catalyst effluent (10); b. mixing the regenerated catalyst effluent (10) or a separated liquid from the regenerated catalyst effluent (10) with an effluent from an alkylation reactor (40); and c. separating out an ionic liquid catalyst stream (60) from the mixture made in step b) to produce the blended alkylate gasoline (97) comprising greater than 50 wppm methylcyclohexane. This application also provides an integrated alkylation process, comprising: a. regenerating a used ionic liquid catalyst comprising a conjunct polymer in a hydrogenation reactor (100) to make a regenerated catalyst effluent (10); b. mixing the regenerated catalyst effluent (10) or a separated liquid from the regenerated catalyst effluent (10) with an effluent from an alkylation reactor (40); and c. separating out an ionic liquid catalyst stream (60) from the mixture made in step b) to produce a blended alkylate gasoline (97) comprising greater than 50 wppm methylcyclohexane. This application also provides a method to analyze alkylate products, comprising: determining an amount of methylcyclohexane in alkylate products (80) and based on the amount, estimating a quantity of extracted conjunct polymer naphtha (45) in the alkylate products (80).