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New reactor flowscheme for dehydrogenation of propane to propylene

A dehydrogenation reactor, a technology for propane dehydrogenation, which is applied in the field of propane dehydrogenation and can solve problems such as catalyst deactivation

Inactive Publication Date: 2012-12-05
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method also leads to coking and deactivation of the catalyst

Method used

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  • New reactor flowscheme for dehydrogenation of propane to propylene

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Embodiment Construction

[0010] Dehydrogenation of hydrocarbons is important for the production of olefins. Olefins are important for a variety of products such as polymer plastics, or the use of olefins in the formation of alkylaryl compounds. A method for propane dehydrogenation is presented. The process includes passing a preheated propane feed stream into a dehydrogenation reactor. The feed stream is contacted with the fluidized catalyst in a dehydrogenation reactor, thereby producing a product stream comprising propylene. The reactor is a fast fluidized reactor, where the reactor is operated in flow mode to turbulently mix the catalyst and feed streams. The catalyst and product streams are passed upwardly through the reactor and separated in a separation section whereby a product stream comprising propylene exits the reactor. The spent catalyst is passed into a catalyst regeneration unit to regenerate the catalyst for return to the dehydrogenation reactor.

[0011] The fast fluidized reactor ...

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Abstract

A process for the dehydrogenation of paraffins is presented. The process utilizes a rapid recycling of dehydrogenation catalyst between the dehydrogenation reactor and the catalyst regeneration unit. The process comprises preheating a combined hydrogen and paraffin hydrocarbon feedstream and passing the combined stream to a dehydrogenation reactor. The hydrocarbon feedstream and the catalyst pass through the reactor at a rate to limit the average residence time of the catalyst in the reactor. The catalyst is cycled to a regeneration unit, and passed through the regeneration unit to limit the average residence time of the catalyst in the regeneration unit.

Description

[0001] priority statement [0002] This application claims priority to US Application No. 12 / 728,543, filed March 22, 2010. field of invention [0003] This invention relates to the production of light olefins from paraffins. In particular, the invention relates to the dehydrogenation of propane in the production of propylene. Background of the invention [0004] Continuous catalytic conversion process in the petrochemical industry. Fluid catalytic cracking of hydrocarbons is an important process for the production of lighter hydrocarbon components, and it is an important process for the production of ethylene and propylene. The fluid catalytic cracking process continuously circulates fluidized catalyst between the reactor and the regenerator. [0005] Another route to the production of propylene is obtained by dehydrogenating propane by catalytic dehydrogenation. Dehydrogenation catalysts generally comprise noble metal catalysts on acidic supports such as alumina or sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/333C07C11/06B01J8/18
CPCC07C5/3332C07C5/333C07C11/06B01J8/18Y02P20/584
Inventor G·P·陶勒尔C·K·齐默尔曼
Owner UOP LLC
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