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Process for selective ethylene oligomerization with antifouling components

A selective, anti-fouling technology, applied in chemical instruments and methods, physical/chemical process catalysts, bulk chemical production, etc., can solve problems such as runaway polymerization, loss of cooling capacity, process shutdown, etc.

Active Publication Date: 2019-08-16
SAUDI ARABIAN OIL CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Known problem with oligomeric systems: polymer formation
If left unchecked, hot spots can eventually lead to process shutdown due to loss of cooling capacity, runaway polymerization, or both

Method used

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  • Process for selective ethylene oligomerization with antifouling components
  • Process for selective ethylene oligomerization with antifouling components
  • Process for selective ethylene oligomerization with antifouling components

Examples

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example

[0072] Various embodiments of the antifouling catalyst system and performance of the antifouling compound injection system will be additionally illustrated by the following examples. The examples are illustrative in nature and should not be construed as limiting the subject matter of the present disclosure.

[0073] To evaluate the antifouling effect of the antifouling catalyst system and method, an ethylene dimerization reaction was performed and evaluated. A number of sample antifouling catalyst systems were formulated and tested according to the methods of the present disclosure. A method of selective ethylene dimerization with an antifouling component and an associated antifouling compound injection system was compared to a baseline comparison system. Specifically, using an antifouling compound injection system, the cocatalyst and antifouling agent are premixed in an antifouling compound mixing vessel and then injected into the process reactor as a separate stream from th...

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Abstract

A process for selectively producing 1-butene comprises contacting at least one antifouling agent with at least one aluminum alkyl compound to form at least one antifouling compound in a first step. The antifouling compound may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. The process further comprises feeding the antifouling compound, an additional amount of the aluminum alkyl compound, at least one titanate compound, and ethylene into a reactor to dimerize ethylene in a second step. The titanate compound is fed as a stream separated from the streams of the antifouling compound and the additional amount of the aluminum alkyl compound. The molar ratio of the sum of the aluminum alkyl compound to the titanatecompound is equal to or higher than 1.5 and equal to or lower than 3.0.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 62 / 431,049, filed December 7, 2016, which is incorporated herein by reference. technical field [0003] Embodiments of the present disclosure relate generally to methods and catalyst systems for ethylene oligomerization, and more particularly, to methods and antifouling catalyst systems for reducing undesired polymerization of ethylene oligomerization. Background technique [0004] 1-Butene and 1-hexene are important petrochemical products, especially for the production of polyethylene. The reaction of ethylene with other alpha-olefins, especially 1-butene and 1-hexene, forms various grades of linear low density polyethylene (LLDPE), which are useful commercial polymers. The source of 1-butene is the butene fraction of the effluent from a hydrocarbon cracker, such as a steam cracker or a fluid catalytic cracker. However, methods of isolatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/32C07C11/08
CPCC07C2/32C07C2531/14C07C2531/22Y02P20/52C07C11/08C07C2/30B01J31/22B01J31/143B01J2531/46
Inventor 十河研治索赫尔·K·谢赫张忠林徐伟柏女世平
Owner SAUDI ARABIAN OIL CO
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