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Waste hydrotreating catalyst utilization method

A hydrogenation treatment and catalyst technology, applied in the direction of catalysts, physical/chemical process catalysts, carbon compound catalysts, etc., to save costs and improve resource utilization

Active Publication Date: 2017-07-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method uses waste hydrotreating catalysts to prepare ethanol dehydration ethylene catalysts. This method not only utilizes the active metals and alumina supports in the waste hydrotreating catalysts, but also makes full use of metals such as Ni and Fe deposited on the waste hydrotreating catalysts. It solves the pollution problem of spent catalysts, saves resources, improves benefits, and is easy to implement technically. 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

[0060] (1) Preparation of catalyst precursor A, the steps are as follows:

[0061] Waste Hydrodemetallization MoNi / Al in Fixed Bed Residue Hydrogenation Industrial Plant 2 o 3 Catalyst (with MoO 3 : 9.7 wt%, NiO: 6.2 wt%, V 2 o 3 : 12.1 wt%, Fe 2 o 3 : 0.6 wt%, Al 2 o 3 : 69.9 wt%), the catalyst was ground to 200 mesh, weighed 100 g of powder, added 250 mL of 98 wt% concentrated sulfuric acid, stirred at a constant temperature of 50 °C to dissolve the solid, collected the filtrate by filtration, and added 22.3 g poly Ethylene glycol 200, then add 26.9 mL of tetraethyl orthosilicate, and add ammonia water, control the pH of the system to 8.0, stir at 70°C until a gel is formed, age the gel at room temperature for 8 h, and then cool the gel at 110°C After being dried for 8 h at high temperature, the obtained solid was calcined at 600 °C for 4 h to obtain catalyst precursor A, and the content of silicon oxide in the carrier was 10 wt%.

[0062] (2) Preparation of catalys...

Embodiment 2

[0069] (1) Preparation of catalyst precursor A, the steps are as follows:

[0070] Waste Hydrodemetallization MoNi / Al in Fixed Bed Residue Hydrogenation Industrial Plant 2 o 3 Catalyst (with MoO 3 : 9.7 wt%, NiO: 6.2 wt%, V 2 o3 : 12.1 wt%, Fe 2 o 3 : 0.6 wt%, Al 2 o 3 : 69.9 wt%), the catalyst was ground to 200 mesh, weighed 100 g of powder, added 250 mL of 98 wt% concentrated sulfuric acid, stirred at a constant temperature of 50 °C to dissolve the solid, collected the filtrate by filtration, and added 22.3 g poly Ethylene glycol 200, then add 21.2 mL of tetraethyl orthosilicate, and add ammonia water, control the pH of the system to 8.0, stir at 70°C until a gel is formed, age the gel at room temperature for 8 h, and then cool the gel at 110°C After being dried for 8 h at high temperature, the resulting solid was calcined at 600 °C for 4 h to obtain catalyst precursor A, and the content of silicon oxide in the carrier was 8 wt%.

[0071] (2) Preparation of catalyst:...

Embodiment 3

[0076] (1) Preparation of catalyst precursor A, the steps are as follows:

[0077] Waste Hydrodemetallization MoNi / Al in Fixed Bed Residue Hydrogenation Industrial Plant 2 o 3 Catalyst (with MoO 3 : 9.7 wt%, NiO: 6.2 wt%, V 2 o 3 : 12.1 wt%, Fe 2 o 3 : 0.6 wt%, Al 2 o 3 : 69.9 wt%), the catalyst was ground to 200 mesh, weighed 100 g of powder, added 250 mL of 98 wt% concentrated sulfuric acid, stirred at a constant temperature of 50 °C to dissolve the solid, collected the filtrate by filtration, and added 22.3 g poly Ethylene glycol 200, then add 12.8 mL of tetraethyl orthosilicate, and add ammonia water to control the pH value of the system to 8.0, stir at 70°C until a gel is formed, age the gel at room temperature for 8 h, and then cool the gel at 110°C After being dried for 8 h at high temperature, the obtained solid was calcined at 600 °C for 4 h to obtain the catalyst precursor A, and the content of silicon oxide in the carrier was 5 wt%.

[0078] (2) Preparation...

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Abstract

The present invention discloses a waste hydrotreating catalyst utilization method, wherein the waste hydrotreating catalyst is prepared into a catalyst for ethylene preparation through ethanol dehydration. The waste hydrotreating catalyst utilization method comprises: preparing a catalyst precursor A from a waste hydrotreating catalyst, and reducing the catalyst precursor A by using hydrogen gas in a high pressure reaction kettle; 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 active metal and the alumina carrier in the waste hydrotreating catalyst are utilized, the metal impurities such as Ni, Fe and the like deposited on the waste hydrotreating catalyst are 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 treatment catalyst, in particular to a method for preparing an ethanol dehydration catalyst for ethylene production from a waste 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 deactivation due to the deposition of a large amount of metal impurities such as Ni and V, especially in waste residue hydrodesulfurization catalysts, which contain 20 wt% to 40 wt% Molybdenum, cobalt, nickel and other valuable metal oxides, 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...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J27/199C07C1/24C07C11/04
CPCY02P20/52B01J27/24B01J27/188B01J27/199C07C1/24C07C2527/188C07C2527/199C07C2527/24C07C11/04
Inventor 金浩孙素华朱慧红杨光
Owner CHINA PETROLEUM & CHEM CORP
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