A kind of utilization method of waste hydrogenation catalyst

A waste hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., to achieve strong anti-coking ability, good stability, and weak Acid effect

Active Publication Date: 2019-07-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only utilizes the hydrogenation active metal components and carrier components in the spent hydrogenation catalyst, but also makes full use of the hydrogenation activity of the spent hydrogenation catalyst, which solves the pollution problem of the spent catalyst, saves resources and improves efficiency. It is technically easy to implement, and the resulting catalyst for ethanol dehydration to ethylene has excellent performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of the catalyst, the steps are as follows:

[0042] The waste hydrodesulfurization HDS catalyst of the fixed-bed residual oil hydrogenation industrial unit was selected, extracted with petroleum ether solvent for 40 hours, dried at 110°C for 8 hours, and roasted at 600°C for 3 hours to obtain the pretreated waste catalyst (containing MoO 3 : 11.0 wt%, NiO: 5.7 wt%, V 2 o 5 : 3.0 wt%, Al 2 o 3 : 69.0 wt%, SiO 2 : 10.3 wt%). Add 92g of the pretreated spent catalyst into the autoclave, raise the temperature to 400°C under hydrogen atmosphere, treat it at 0.3MPa for 4h, drop to the reaction temperature, add 400g of sorbitol solution with a mass concentration of 20%, and then adjust the hydrogen Pressure to 3MPa, react at 260°C for 3h, after the reaction, filter the catalyst, dry at room temperature until there is no liquid phase on the surface of the carrier; then add it to an aqueous solution containing 16.8g of citric acid, stir at 40°C until the sol...

Embodiment 2

[0048] (1) Preparation of the catalyst, the steps are as follows:

[0049] The waste hydrodesulfurization HDS catalyst of the fixed-bed residual oil hydrogenation industrial unit was selected, extracted with petroleum ether solvent for 40 hours, dried at 110°C for 8 hours, and roasted at 600°C for 3 hours to obtain the pretreated waste catalyst (containing MoO 3 : 11.0 wt%, NiO: 5.7 wt%, V 2 o 5 : 3.0 wt%, Al 2 o 3 : 69.0 wt%, SiO 2 : 10.3 wt%). Add 88g of the pretreated spent catalyst to the autoclave, raise the temperature to 400°C under a hydrogen atmosphere, treat it at 0.3MPa for 4h, drop to the reaction temperature, add 400g of sorbitol solution with a mass concentration of 20%, and then adjust the hydrogen Pressure to 3MPa, react at 260°C for 3h, after the reaction, filter out the catalyst, dry at room temperature until there is no liquid phase on the surface of the carrier; then add it to an aqueous solution containing 31.7g of citric acid, stir at 40°C until the...

Embodiment 3

[0053] (1) Preparation of the catalyst, the steps are as follows:

[0054] The waste hydrodesulfurization HDS catalyst of the fixed-bed residual oil hydrogenation industrial unit was selected, extracted with petroleum ether solvent for 40 hours, dried at 110°C for 8 hours, and roasted at 600°C for 3 hours to obtain the pretreated waste catalyst (containing MoO 3 : 11.0 wt%, NiO: 5.7 wt%, V 2 o 5 : 3.0 wt%, Al 2 o 3 : 69.0 wt%, SiO 2 : 10.3 wt%). Add 85g of the pretreated spent catalyst to the autoclave, raise the temperature to 400°C under hydrogen atmosphere, treat it at 0.3MPa for 4h, drop to the reaction temperature, add 400g of sorbitol solution with a mass concentration of 20%, and then adjust the hydrogen Pressure to 3MPa, react at 260°C for 3h, after the reaction, filter the catalyst, dry at room temperature until there is no liquid phase on the surface of the carrier; then add it to an aqueous solution containing 45.2g of citric acid, stir at 40°C until the solut...

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PUM

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Abstract

The present invention discloses a waste hydrogenation catalyst utilization method, which comprises: pre-treating a waste hydrogenation catalyst; in a high pressure reaction kettle, reducing with hydrogen gas; adding a polyol and / or a furfural solution to the high pressure reaction kettle, and carrying out a hydrogenation reaction; and drying the material obtained after the reaction until the surface is liquid-free, sequentially contacting an organic acid, ammonium or ammonia, and loading a heteropoly acid to produce the catalyst for ethylene preparation through ethanol dehydration. According to the present invention, with the method, the hydrogenation activity metal component and the carrier component in the waste hydrogenation catalyst are utilized, the hydrogenation activity of the waste hydrogenation catalyst is completely utilized, the pollution problem of the waste catalyst is solved, and the obtained catalyst for ethylene preparation through ethanol dehydration has the excellent performance.

Description

technical field [0001] The invention relates to a method for utilizing a waste hydrogenation catalyst, in particular to a method for preparing a catalyst for ethanol dehydration to ethylene from a waste residue oil hydrogenation treatment catalyst. Background technique [0002] Every year, a large amount of spent catalysts that cannot be regenerated are produced all over the world, and hydrogenation catalysts account for a considerable proportion. Residue hydrotreating catalysts have a short service life, and cannot be regenerated after inactivation due to the deposition of a large amount of impurities such as metal Ni and V, especially in waste residue hydrodesulfurization catalysts, which contain molybdenum, Valuable metal oxides such as cobalt and nickel, if these waste catalysts are discarded or used as fillers in construction and other industries, it will not only cause waste of resources, but also cause certain pollution to the environment due to the loss of metals, es...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18B01J27/188C07C11/04C07C1/24
CPCY02P20/52
Inventor 金浩孙素华朱慧红杨光
Owner CHINA PETROLEUM & CHEM CORP
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