Abstract: In a process for isoparaffin-olefin alkylation, a feed comprising at least one olefin and at least one isoparaffin is contacted under alkylation conditions in the presence of a solid acid catalyst comprising a crystalline microporous material of the MWW framework type to produce an alkylated product. The alkylated product comprises a C8? fraction, which is useful as a gasoline blending stock, and a C9+ fraction, which is separated from the alkylated product and at least partially recycled to the alkylation step.

Abstract: A process for the catalytic alkylation of an olefin with an isoparaffin is described in which a feed comprising at least one olefin and at least one isoparaffin is contacted with a solid acid catalyst under alkylation conditions effective for reaction between the olefin and the isoparaffin to produce an alkylated product. The solid acid catalyst comprises a crystalline microporous material of the MWW framework type, the feed comprises at least one C5+ olefin and/or at least one C5+ isoparaffin and the alkylated product comprises at least 20% wt % of C10+ branched paraffins.

Abstract: A process for the catalytic alkylation of an olefin with an isoparaffin comprises: contacting an olefin-containing feed with an isoparaffin-containing feed under alkylation conditions in the presence of a solid acid catalyst comprising a crystalline microporous material of the MWW framework type, wherein the olefin-containing feed comprises propylene and at least one other C4 to C12 olefin.

Abstract: A process for the catalytic alkylation of an olefin with an isoparaffin comprises contacting an olefin-containing feed with an isoparaffin-containing feed under alkylation conditions in a reaction zone containing a fixed bed of a solid acid catalyst comprising a crystalline microporous material of the MWW framework type, wherein the reaction zone contains at least 100 kg of the catalyst and the catalyst has a cycle length of at least 150 days.

Abstract: An HF olefin/isoparaffin alkylation process is carried out in an alkylation unit with a settling vessel in which the alkylate product is separated from the HF acid catalyst containing water and acid soluble oil (ASO). The density of the liquids in the settling vessel is measured at different levels by means of a nuclear density profile analyzer. The acid strength of the acid phase is determined from the density measurement and an optional temperature measurement. The proportion of water in the acid phase may also be measured separately by measurement of its electrical conductivity to determine the respective contributions of the water and the ASO to the density of the HF acid phase.

Abstract: An HF alkylation process for producing gasoline boiling range alkylate product by the alkylation in an HF alkylation unit of a light olefin reactant with an isoparaffin reactant in the presence of a hydrogen fluoride/sulfolane alkylation catalyst mixture in which fresh sulfolane feed having a Total Acid Number (TAN, ASTM D974) not more than 2 mq./L and optimally not more than 1 meq./L. is added to the hydrogen fluoride/sulfolane alkylation catalyst circulating in the unit. Control over the acidic components of the sulfolane feed is appropriately maintained by monitoring and pretreatment with an ion exchange resin to remove acidic components from the feed.

Abstract: An HF olefin/isoparaffin alkylation process is carried out in an alkylation unit with a settling vessel in which the alkylate product is separated from the HF acid catalyst containing water and acid soluble oil (ASO). The density of the liquids in the settling vessel is measured at different levels by means of a nuclear density profile analyzer. The acid strength of the acid phase is determined from the density measurement and an optional temperature measurement. The proportion of water in the acid phase may also be measured separately by measurement of its electrical conductivity to determine the respective contributions of the water and the ASO to the density of the HF acid phase.

Abstract: The regeneration of HF alkylation acid in an alkylation unit is improved by withdrawing a vapor stream from the HF regenerator tower and condensing the stream to form a liquid fraction which is accumulated in a side distillation zone; the collected liquid fraction, comprising HF acid, water and some stripping medium is distilled in a batch or continuous type operation to drive off the HF acid (along with stripping medium) and the vapor is returned to the regenerator-stripper vessel. The distillation of the sidedraw liquid is continued until the composition of the liquid attains the azeotropic value or as near to that value as desired. The azeotrope, comprising water and acid can then be dropped out of the distillation vessel for disposal by neutralization in the conventional way.

Abstract: An HF alkylation process for producing gasoline boiling range alkylate product by the alkylation of a light olefin with an isoparaffin in the presence of hydrogen fluoride as an alkylation catalyst, in which the content of organic fluorides in the alkylation product stream is reduced by recontact with additional HF alkylation acid after which the hydrocarbon phase and the denser acid-containing phase are separated in a hydrocyclone. The use of the hydrocyclone enables the acid inventory of the unit to be significantly reduced which still achieving satisfactory removal of the unwanted fluoride by-products.

Abstract: The regeneration of HF alkylation acid in an alkylation unit is improved by withdrawing a vapor stream from the HF regenerator tower and condensing the stream to form a liquid fraction which is accumulated in a side distillation zone; the collected liquid fraction, comprising HF acid, water and some stripping medium is distilled in a batch or continuous type operation to drive off the HF acid (along with stripping medium) and the vapor is returned to the regenerator-stripper vessel. The distillation of the sidedraw liquid is continued until the composition of the liquid attains the azeotropic value or as near to that value as desired. The azeotrope, comprising water and acid can then be dropped out of the distillation vessel for disposal by neutralization in the conventional way.

Abstract: An HF alkylation process for producing gasoline boiling range alkylate product by the alkylation of a light olefin with an isoparaffin in the presence of hydrogen fluoride as an alkylation catalyst, in which the content of organic fluorides in the alkylation product stream is reduced by recontact with additional HF alkylation acid after which the hydrocarbon phase and the denser acid-containing phase are separated in a hydrocyclone. The use of the hydrocyclone enables the acid inventory of the unit to be significantly reduced which still achieving satisfactory removal of the unwanted fluoride by-products.