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A chemical regeneration method for butyl octanol oxo synthesis catalyst

A chemical regeneration, catalyst technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc. And other issues

Active Publication Date: 2016-06-15
TIANJIN BOHUA YONGLI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent does not disclose a method for inhibiting the polymerization of propargyl alcohol, and the amount of propargyl alcohol used is large, and there are certain difficulties in implementation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Butanol Oxylation Catalyst Mother Liquor Catalyst Activity of Butanol Oxylation Catalyst of Butyl Octanol Unit Dropped Suddenly, Shown as Operating Load Decreased, At the same time, the partial pressure of propylene, hydrogen and carbon monoxide rose obviously. Catalyst poisoning, after testing the activity of the catalyst in the reactor, it is determined that the activity has been reduced to 26%.

[0020] For above-mentioned situation, adopt following method to butanol oxo synthesis catalyst chemical regeneration:

[0021] (1) remove free state S in butanol oxo synthesis catalyst mother liquor 2- and Cl - , the specific steps are: under the oxo-butanol carbonylation reaction process conditions in the non-production state, the regenerant A is uniformly mixed with the oxo-butanol oxo synthesis catalyst mother liquor, and the free state the S 2- and Cl - Carry out washing, make in the catalyst mother liquor, produce butyl octanol carbonylation catalyst phase and regen...

Embodiment 2

[0027] The catalyst activity of the butanol oxo synthesis catalyst mother liquor in the butanol unit suddenly decreased, which was manifested by a decrease in operating load, and at the same time, the partial pressure of propylene, hydrogen, and carbon monoxide increased significantly. Catalyst poisoning, after testing the activity of the catalyst in the reactor, it is determined that the activity has been reduced to 28%.

[0028] For above-mentioned situation, adopt following method to butanol oxo synthesis catalyst chemical regeneration:

[0029] (1) remove free state S in butanol oxo synthesis catalyst mother liquor 2- and Cl - , the specific steps are: under the oxo-butanol carbonylation reaction process conditions in the non-production state, the regenerant A is uniformly mixed with the oxo-butanol oxo synthesis catalyst mother liquor, and the free state the S 2- and Cl - Carry out washing, make in the catalyst mother liquor, produce butyl octanol carbonylation cataly...

Embodiment 3

[0035] Some elements of the poisoned butanol carbonylation catalyst mother liquor exceeded the standard, including S: 0.137%, Na: 62.79ppm, Ni51.2ppm, Fe: 24.77ppm, S exceeded the standard by 1370 times, and Cl exceeded the standard by 4.5 times.

[0036] For above-mentioned situation, adopt following method to butanol oxo synthesis catalyst chemical regeneration:

[0037] (1) remove free state S in butanol oxo synthesis catalyst mother liquor 2- and Cl - , the specific steps are: under the non-production state oxo-oxo reaction process conditions, the regenerant A is uniformly mixed with the oxo-catalyst mother liquor of octyl-butanol, and the free state the S 2- and Cl - Carry out washing, make in the catalyst mother liquor, produce butyl octanol carbonylation catalyst phase and regeneration agent A phase layering, S 2- and Cl - Transfer to the regeneration agent A phase, retain the butyl-octyl alcohol oxo catalyst phase, and drain the regeneration agent A phase, and the...

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Abstract

The invention discloses a chemical regeneration method of butyl octanol oxo synthesis catalyst, which includes the following steps: (1) removing free S2- and Cl- in the mother liquor of butyl octanol oxo synthesis catalyst; (2) removing butyl octyl Impurities in the precious metal complex formed by complexing with precious metals in the alcohol oxo synthesis catalyst mother liquor; (3) Then add regenerant C to the catalyst mother liquor to neutralize excess regenerant B, and the regenerant C is an organic acid; (4) Repeatedly wash the butyl octanol oxo synthesis catalyst mother liquor with regenerant A several times until the remaining regenerant B and regenerant C in the mother liquor are washed away. This method reduces metal ions such as Fe3+, Ne2+ and S2- in the butyl octanol oxo synthesis catalyst, reduces permanently poisoned ions in the butyl octanol oxo synthesis catalyst, and stimulates catalytic activity.

Description

technical field [0001] The invention relates to a chemical regeneration method of a permanently poisoned catalyst, in particular to a method for the chemical regeneration of a butanol oxo synthesis catalyst. Background technique [0002] After the catalyst mother liquor in the butanol oxo synthesis unit is operated from the original feed, with the long-term operation of the catalyst mother liquor, the catalytic activity will gradually decrease, and at the same time, due to the reaction raw materials (synthesis gas, propylene) Some toxic agents and inhibitors (such as S, Cl, etc.) of the catalyst will cause a rapid decrease in catalytic activity. For toxic agents, the production process has strict control indicators for the toxic components in the raw materials (synthesis gas, propylene), and the butanol oxo synthesis reaction process has designed a purification device for the raw materials and implemented strict detoxification processes. activity only slowly declines. Inhi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/40B01J31/24
Inventor 王义龙庞栓林聂增来李亚斌李治水杨力王海侯强赵淑凤张思学
Owner TIANJIN BOHUA YONGLI CHEM IND
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