Detergent Alkylate
| 원료 | Benzene; Paraffin | ||||
| 생산물 | detergent alkylate | ||||
| 적용 | A process for the production of linear alkylbenzene (LAB) from normal paraffins and benzene by chlorination and alkylation. | ||||
| 설명 | Description: Paraffin is charged together with pure chlorine to the chlorination section. About 20% of the paraffin is chlorinated in a specially designed pipe reactor that assures a high selectivity to monochloro paraffins. Anhydrous hydrogen chloride gas is separated from the paraffin-chloroparaffin mixture which then goes to the alkylation section. Benzene and aluminum chloride catalyst slurry are added to the alkylation reactors. The recycle catalyst activity is carefully controlled by addition of fresh aluminum or aluminum chloride so as to yield a high purity alkyl benzene product. Anhydrous hydrogen chloride gas is evolved in alkylation, joining the gas from chlorination. The combined HCI stream can be processed for regeneration of pure chlorine. The catalyst slurry is separated from the total raw alkylate and recycled. The raw alkylate is neutralized before fractionation. The raw alkylate containing benzene, paraffin, detergent alkylate and heavy alkylate is separated by fractionation in a manner to recycle dry benzene and paraffin back to the reactors. The detergent alkylate is separated as a heart cut fraction, and depending on product requirement may be further treated. The alkylate produced is high quality linear alkylbenzene (LAB) which is used to produce biodegradeable detergents.
Operating requirements (per metric ton of linear alkyl benzene):
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