IL43484A - Method for separating alkylation reaction products to recover relatively pure isobutane - Google Patents
Method for separating alkylation reaction products to recover relatively pure isobutaneInfo
- Publication number
- IL43484A IL43484A IL43484A IL4348473A IL43484A IL 43484 A IL43484 A IL 43484A IL 43484 A IL43484 A IL 43484A IL 4348473 A IL4348473 A IL 4348473A IL 43484 A IL43484 A IL 43484A
- Authority
- IL
- Israel
- Prior art keywords
- isobutane
- fraction
- effluent
- fractionator
- locus
- Prior art date
Links
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (8)
1. A method for separating components of the hydrocarbon effluent from an alkylation reaction zone in which iso-butane is alkylated with an olefinic reactant in the presence of a catalyst, which method' comprises the steps of: (a) separating catalyst from said hydrocarbon effluent; (b) introducing said hydrocarbon effluent into a frac-tionator comprising an upper enriching section, and a lower fractionation section, said vessel maintained at a pressure less than about 15 atmospheres; (c) removing from said upper enriching section an overhead fraction comprising isobutane and less than about 50 mole percent propane; (d) removing from said fractionator an isobutane side cut fraction comprising less than about 8 mole percent propane, said isobutane fraction being withdrawn as a vapor phase at a locus below the locus for introducing said effluent; (e) removing from said fractionator a substantially pure normal butane side cut fraction below said locus for withdrawing said isobutane side cut fraction; (f) reboiling the hydrocarbon effluent in said fractionation zone utilizing an intermediate reboiling means located in said lower fractionation section; (g) removing from said fractionator a bottoms fraction comprising alkylate; (h) condensing at least a portion of said overhead fraction to provide an overhead liquid stream; and, (i) introducing at least a portion of said overhead liquid stream into said fractionator at a locus above said locus introducing said effluent.
2. The method of Claim 1 wherein said effluent is introduced at the upper end of said fractionation section, and at least a portion of said overhead liquid stream is introduced into said enriching section.
3. The method of Claim 1 or 2 wherein a portion of said overhead liquid stream is fractionated to provide an isobutane stream and a propane stream and at least a portion of said isobutane stream and at least a portion of said isobutane side cut fraction are introduced into said alkylation reaction zone.
4. The method of any of Claims 1 to 3 wherein said olefinic reactant is a mono-olefinic hydrocarbon having from about 3 to about 5 carbon atoms per molecule.
5. The method of any of Claims 1 to 4 wherein the pressure in said fractionator is maintained at a pressure of from about 10.5 to 13.3 atmospheres.
6. The method of any of Claims 1 to 5 wherein the catalyst comprises hydrofluoric acid.
7. The method of any of Claims 1 to 5 wherein the catalyst comprises sulfuric acid.
8. A method for separating compounds of the hydrocarbon effluent from an alkylation reaction zone substantially as hereinbefore described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL43484A IL43484A (en) | 1973-10-25 | 1973-10-25 | Method for separating alkylation reaction products to recover relatively pure isobutane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL43484A IL43484A (en) | 1973-10-25 | 1973-10-25 | Method for separating alkylation reaction products to recover relatively pure isobutane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL43484A0 IL43484A0 (en) | 1974-01-14 |
| IL43484A true IL43484A (en) | 1976-08-31 |
Family
ID=11047409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL43484A IL43484A (en) | 1973-10-25 | 1973-10-25 | Method for separating alkylation reaction products to recover relatively pure isobutane |
Country Status (1)
| Country | Link |
|---|---|
| IL (1) | IL43484A (en) |
-
1973
- 1973-10-25 IL IL43484A patent/IL43484A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IL43484A0 (en) | 1974-01-14 |
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