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Chemical regeneration method of catalyst for oxo-synthesis of butanol and octanol

A technology for chemical regeneration and catalysts, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of large amount of propargyl alcohol and propargyl alcohol not disclosed publicly And other issues

Active Publication Date: 2014-09-10
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] The activity of the mother liquor catalyst of the butanol carbonyl synthesis catalyst in the butanol plant suddenly drops, which is manifested by a decrease in the operating load, while the partial pressures of propylene, hydrogen and carbon monoxide increase significantly. The catalyst was poisoned, and the activity test of the catalyst in the reactor confirmed that the activity had been reduced to 26%.

[0020] In view of the above situation, the following methods are used to chemically regenerate the butanol carbonyl synthesis catalyst:

[0021] (1) Remove the free S in the mother liquor of the butanol oxo catalyst 2- And Cl - , The specific steps are: under the non-production state of butanol oxo reaction process conditions, the regenerant A and the butanol oxo catalyst mother liquor are uniformly mixed, and the free state existing in the butanol oxo catalyst mother liquor S 2- And Cl - Carry out washing to separate the butanol oxo catalyst phase and the regenerant A pha...

Embodiment 2

[0027] The catalyst activity of the butanol carbonyl synthesis catalyst mother liquor in the butanol plant suddenly decreases, which is manifested by a decrease in the operating load, while the partial pressures of propylene, hydrogen, and carbon monoxide increase significantly. The catalyst was poisoned, and the activity test of the catalyst in the reactor confirmed that the activity had been reduced to 28%.

[0028] In view of the above situation, the following methods are used to chemically regenerate the butanol carbonyl synthesis catalyst:

[0029] (1) Remove the free S in the mother liquor of the butanol oxo catalyst 2- And Cl - , The specific steps are: under the non-production state of butanol oxo reaction process conditions, the regenerant A and the butanol oxo catalyst mother liquor are uniformly mixed, and the free state existing in the butanol oxo catalyst mother liquor S 2- And Cl - Carry out washing to separate the butanol oxo catalyst phase and the regenerant A phase...

Embodiment 3

[0035] Some elements in the mother liquor of the butanol oxo catalyst after poisoning 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] In view of the above situation, the following methods are used to chemically regenerate the butanol carbonyl synthesis catalyst:

[0037] (1) Remove the free S in the mother liquor of the butanol oxo catalyst 2- And Cl - , The specific steps are: under the non-production state of butanol oxo reaction process conditions, the regenerant A and the butanol oxo catalyst mother liquor are uniformly mixed, and the free state existing in the butanol oxo catalyst mother liquor S 2- And Cl - Carry out washing to separate the butanol oxo catalyst phase and the regenerant A phase in the catalyst mother liquor. S 2- And Cl - Transfer to the regenerator A phase, retain the butanol oxo catalyst phase, and drain the regenerator A phase, the re...

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Abstract

The invention discloses a chemical regeneration method of a catalyst for oxo-synthesis of butanol and octanol. The chemical regeneration method includes the following steps that (1) free S<2-> and Cl<-> in a mother solution of the catalyst for oxo-synthesis of butanol and octanol are removed; (2) impurities in noble metal complexes formed by complexation of impurities and noble metals in the mother solution of the catalyst for oxo-synthesis of butanol and octanol are removed; (3) a regenerant C and an excessive amount of regenerant B are added into the mother solution of the catalyst, wherein the regenerant C is organic acid; (4) the mother solution of the catalyst for oxo-synthesis of butanol and octanol is washed several times through a regenerant A till the remaining regenerant B and the remaining regenerant C in the mother solution are washed away. Through the method, metal ions such as Fe<3+> and Ne<2+> and S<2-> in the catalyst for oxo-synthesis of butanol and octanol are reduced, permanently poisoned ions in the catalyst for oxo-synthesis of butanol and octanol are reduced, and the catalytic activity is stimulated.

Description

Technical field [0001] The present invention relates to a method for chemical regeneration of a permanently poisoned catalyst, and particularly relates to a method for chemical regeneration of a butanol carbonyl synthesis catalyst. Background technique [0002] After the catalyst mother liquor in the butanol carbonyl synthesis unit is operated from the original feed, as the catalyst mother liquor runs for a long time, the catalytic activity will gradually decrease, and at the same time, the reaction raw materials (syngas, propylene) and solvent (butyraldehyde) will be brought in. Some of the poisons and inhibitors (such as S, Cl, etc.) will cause the catalytic activity to decrease rapidly. For poisons, the production process has strict control indicators for the toxic components in the raw materials (syngas, propylene), and the butanol carbonyl synthesis reaction process has designed purification devices for the raw materials, implemented strict detoxification processes, and cata...

Claims

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Application Information

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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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