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Catalytic composite and improved process for dehydrogenation of hydrocarbons

A composite material, dehydrogenation technology, applied in chemical instruments and methods, catalysts, dehydrogenation to hydrocarbons, etc., can solve problems such as bad, affecting the total yield of olefin products, and short duration of regeneration cycle.

Inactive Publication Date: 2017-10-13
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the short duration of the regeneration cycle, there is a high potential for vertical temperature gradients and pressure drops to develop across the catalyst bed, which adversely affects the overall yield of olefin products

Method used

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  • Catalytic composite and improved process for dehydrogenation of hydrocarbons
  • Catalytic composite and improved process for dehydrogenation of hydrocarbons
  • Catalytic composite and improved process for dehydrogenation of hydrocarbons

Examples

Experimental program
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preparation example Construction

[0056] figure 2 A method of preparing a catalytic composite material according to one embodiment is shown. A commercially available Catofin STD extruded catalyst was ground into powder form and subsequently physically mixed with the exothermic material semi-metal powder. Afterwards, the catalyst-semimetal powder mixture and the catalyst support were granulated and then sieved through a mesh screen.

[0057] In certain embodiments, the dehydrogenation catalyst comprises 0.5-5.0 wt.%, preferably 1.0-4.0 wt.%, more preferably 1.0-3.0 wt.% of the catalytic composite. The semi-metal accounts for 1-50 wt.%, preferably 2-40 wt.%, more preferably 5-35 wt.% of the catalytic composite. Alternatively, the semi-metal comprises 5-35 wt.%, preferably 7-30 wt.%, more preferably 8-25 wt.% of the support. In one embodiment, 24 wt.% of the semi-metallic station carrier.

[0058] In some embodiments, the catalytic composite further comprises a promoter selected from the group consisting of ...

Embodiment approach 1

[0067] Embodiment 1: A catalytic composite material suitable for the cyclic process of alkanes adiabatic, non-oxidative dehydrogenation to olefins, comprising: a dehydrogenation catalyst; a semimetal; and a carrier supporting the dehydrogenation catalyst and the semimetal; wherein the semimetal is for Dehydrogenation is inert and releases heat when exposed to at least one of the reduction and oxidation phases of the cyclic process.

Embodiment approach 2

[0068] Embodiment 2: The catalytic composite material of Embodiment 1, wherein the semimetal is at least one of boron, silicon, germanium, arsenic, antimony, tellurium, polonium, and astatine.

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Abstract

A catalytic composite for a cyclic process of adiabatic, non-oxidative dehydrogenation of an alkane into an olefin, comprises a dehydrogenation catalyst, a semimetal and a carrier supporting the catalyst and the semimetal. During the reduction and / or regeneration stages of the adiabatic process, the semimetal releases heat which can be used to initiate the dehydrogenation reactions, which are endothermic in nature, thereby reducing the need for hot air flow and combustion of coke as heat input. The semimetal is inert towards the dehydrogenation reaction itself, alkane feed and olefin product as well as other side reactions of the cyclic process such as cracking and decoking.

Description

technical field [0001] The present disclosure relates to catalytic composites for use in dehydrogenation processes. More specifically, the present disclosure relates to catalytic composites incorporating at least one catalytically inert semimetal and adiabatic, non-oxidative cyclic dehydrogenation processes in which these catalytic composites are used. Background technique [0002] The "Background" description provided herein is for the purpose of generally presenting the context of the disclosure. The inventor's work, to the extent it is described in this Background section, and aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly accepted as relative to the present invention. current technology. [0003] The dehydrogenation of hydrocarbons involves the breaking of two carbon-hydrogen (C-H) bonds and the simultaneous formation of molecular hydrogen (H 2 ) and molecules containing double carbon-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/26B01J23/62B01J23/644B01J23/843B01J27/057C07C5/32B01J35/00
CPCB01J23/26B01J23/622B01J23/644B01J23/6445B01J23/843B01J23/8435B01J27/0576C07C5/324B01J35/30B01J38/06B01J38/12C07C5/325C07C2523/644Y02P20/584B01J35/50B01J2235/15C07C11/02B01J8/02B01J21/04B01J23/18B01J23/6522B01J2208/027C07C2523/652
Inventor 卡尔蒂克·钱德拉·蒙达尔迪帕巴利·罗伊·乔杜里韦拉尤坦·萨拉瓦南
Owner SABIC GLOBAL TECH BV