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Paraffin alkylation

A technology of alkylation and alkylate, which is applied in the field of alkylation and can solve problems such as increasing octane

Inactive Publication Date: 2008-01-16
CHEM RES & LICENSING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although this method requires the use of strong acids, no other method is as effective and it remains the primary method used worldwide to increase octane alkylation

Method used

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Examples

Experimental program
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Embodiment

[0078] To demonstrate the advantages of using a vaporization section in the overall process, a pilot setup was in which a single reactor was configured with a first mixing / reaction zone and a vaporization zone. The experimental device operates in the "transition" or "pulse" flow region in the vaporization zone. The test is run as follows:

[0079] a) the device is configured as a downflow reactor;

[0080] b) using a single packing section in which a total of 28 0.3m x 7.62cm (1 foot long x 3 inches) diameter packets were packed into the combined mixing zone (first reaction zone) and vaporization zone;

[0081] c) the packing used is provided in the mixing and vaporization zone for the continuous phase of acid and allows the continuous phase of hydrocarbons to leave the vaporization zone and enter the coalescer;

[0082] d) introducing liquid, recycle acid and hydrocarbons to the mixing zone;

[0083] e) using only one recycle hydrocarbon stream, which will reach the top of...

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Abstract

A liquid acid process is disclosed in which a hydrocarbon component containing an olefin, an olefin precursor or mixture and an isoalkane and a liquid acid catalyst is fed to a downflow reaction zone containing a disperser, under conditions to induce pulse flow at or near the outlet to react the isoalkane and olefin to produce a reaction product and feeding the reaction product to a vaporization zone containing a disperser under conditions to induce pulse flow at or near the outlet of the vaporization zone. A pressure drop across the disperser in the vaporization zone causes partial vaporization of the hydrocarbon which quenches the heat reaction and cooling the unvaporized portion of said reaction product, which is recovered and allowed to separate into an acid phase and hydrocarbon phase containing the alkylate. The acid catalyst and hydrocarbons may be fractally fed to the reaction zone.

Description

[0001] Statement on Government Sponsored Research and Development [0002] This invention was made with government support under DOE Cooperative Agreement No. DE-FC36-04GO14152 awarded by the DOE. The government has the necessary rights in this invention. technical field [0003] The present invention relates to the alkylation of a paraffinic feedstock. The present invention simultaneously provides improvements in operating conditions and feedstocks for the alkylation of acidic paraffins. The present invention further provides a method to achieve more efficient mixing of olefin, paraffin and liquid acid catalyst. Background technique [0004] A common goal of most alkylation processes is to intimately contact isoparaffins (or aromatics) and light olefins with an acid catalyst to produce an alkylation product. The acid-catalyzed alkylation of aliphatic hydrocarbons with olefins is a well-known process in the petroleum refining industry. Alkylation is the reaction of paraf...

Claims

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Application Information

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IPC IPC(8): C07C2/62C07C9/14
CPCC07C2/62C10G29/205C07C2527/054C07C9/16C10G11/06B01J27/053
Inventor 威廉·M·小克罗斯劳伦斯·A·小史密斯
Owner CHEM RES & LICENSING CO
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