Method of removing organic sulfur compounds from alkylate

A technology of organic sulfur and compounds, applied in the field of processing alkylation products

Inactive Publication Date: 2006-07-19
CHEM RES & LICENSING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method of removing organic sulfur compounds from alkylate

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Embodiment

[0017] Crude alkylate containing about 22% normal C4 was blended with butyl bisulfate to 31.5 wppm total sulfur. This feed is processed in three ways:

[0018] 1) Untreated filler

[0019] The feedstock was first flowed vertically at approximately 20 LHSV (liquid hourly space velocity) (approximately 600 cc) through a 6 foot by 1 / 2 inch Teflon tube filled with untreated fiberglass / 305SS co-braided de-entrainment material. The effluent has the same sulfur content as the feed.

[0020] 2) by H 2 SO 4 wet filler

[0021] Fill the bottom 2 / 3 with 98% H 2 SO 4 Wet, and drain filling completely. Feedstock flows up through the packed 6 inch tube at about 20 LHSV (about 1400 cc). Using only 2 / 3 of the bed, the effluent contains only 1.3 (at 1000 cc) - 1.6 (at 1400 cc) wppm of total sulfur.

[0022] 3) Section H 2 SO 4 processing method

[0023] Combine 65cc of feed with 10cc of 98% H 2 SO 4 Shake vigorously together for about 1-2 minutes and allow the phases to separate....

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Abstract

A process for the removal of organic sulfur compounds, primarily oxygenated organic compounds, such as sulfates and sulfonic esters from a hydrocarbon liquid is disclosed which comprises contacting the hydrocarbon liquid with a coalescer comprising a mesh material which has been wetted by sulfuric acid. The hydrocarbon liquid may be the product from a sulfuric acid catalyzed alkylation process and contain sufficient sulfuric acid to remove the sulfates and sulfonic esters. Sulfuric acid may be added to the coalescer vessel counter current to the hydrocarbon liquid to improve the efficiency of the contacting and removal.

Description

field of invention [0001] The present invention relates to a process for the treatment of alkylation products resulting from the reaction of n-alkenes with isoalkanes in the presence of sulfuric acid to produce alkylation products. More particularly, the present invention relates to a process wherein the effluent from an alkylation reactor is passed through a de-entrainment unit to remove sulfuric acid by coalescence while simultaneously being treated to remove oxygen-containing organosulfur compounds. Background technique [0002] The acid-catalyzed alkylation of aliphatic hydrocarbons with olefins is a well known process in the petroleum processing industry. Alkylation is the reaction of paraffins, usually isoparaffins, with olefins in the presence of strong acids, which can produce, for example, paraffins with a higher octane number than the starting material and which boil in the gasoline boiling range. In petroleum processing, the reaction is usually C 2 -C 5 The rea...

Claims

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Application Information

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IPC IPC(8): C07C2/62C07C2/58
CPCC10G31/00C07C2/62C07C7/005C07C7/171C07C9/21C07C2527/054C07C7/00C10G17/06
Inventor 小劳伦斯·A·史密斯
Owner CHEM RES & LICENSING CO
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