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Method for reactivating used hydrogenation treatment titania catalyst, and regenerated hydrogenation treatment titania catalyst

A titanium dioxide and catalyst technology, which is applied in the field of regenerating titanium dioxide catalysts for hydroprocessing, can solve problems such as unfavorable economic aspects

Inactive Publication Date: 2015-03-25
CHIYODA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, although these titania catalysts for hydrotreatment using a titania carrier make full use of the excellent characteristics of the titania carrier and overcome their defects to a certain extent, they have not been overcome from an industrial point of view, especially the lack of beneficial to such issues as the economic

Method used

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  • Method for reactivating used hydrogenation treatment titania catalyst, and regenerated hydrogenation treatment titania catalyst
  • Method for reactivating used hydrogenation treatment titania catalyst, and regenerated hydrogenation treatment titania catalyst

Examples

Experimental program
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Effect test

preparation example Construction

[0082] [Preparation of Titanium Dioxide Catalyst for Hydrotreating]

[0083]

[0084] Prepare the whole amount of raw material liquid required for the operation of the following instructions respectively: A liquid formed by adding water in a ratio of 1030g to 970g of aluminum chloride hexahydrate; The B liquid that is formed, is 16.6 mass % at Ti concentration, and Cl concentration is 32.3 mass % titanium tetrachloride solution 198g, add water to make 1.8 liters (L) of C liquid, and add water to 14% ammonia water 231g 1.8 L of liquid D was prepared, and liquid E was obtained by adding 733 g of hydrochloric acid and 13 g of water to 1520 g of a titanium tetrachloride solution having a Ti concentration of 16.7% by mass and a Cl concentration of 32.6% by mass.

reference example 1

[0086]

[0087] (a) Put 14 liters of water in a 19 L enamel container, and heat to 80° C. while stirring. 850 g of liquid A was added to this enamel container and kept for 5 minutes. The pH of the liquid at this time (hereinafter referred to as "synthesis solution") was 2.5. Next, liquid B in an amount to bring the pH of the synthesis solution to 7.5 was added to the enamel container and kept for 5 minutes (the number of pH swings was the first time).

[0088] (b) Then, add 850 g of A solution, adjust the pH of the synthetic solution to 3.0 and keep it for 5 minutes, then add the B solution that makes the pH of the synthetic solution reach 7.5, and keep it for 5 minutes (the second time of pH swing).

[0089] (c) Next, chloride ions and ammonium ions which are inclusions are washed and removed to obtain alumina hydrate particles with a pH swing of 2 times.

[0090]

[0091] 122 g of the above-obtained alumina hydrate particles were collected on an oxide basis, and stirre...

Embodiment 1

[0102] The used hydrotreating titanium dioxide catalyst HBT-1 recovered from the gas oil hydrodesulfurization unit operated for about one year was cleaned with toluene solvent, and then dried at 120° C. for 10 hours in an air atmosphere to remove the solvent. The catalyst at this time contained 14.7 wt% of carbon components and 8.5 wt% of sulfur components.

[0103] While rotating the dried catalyst in the rotary kiln, the low oxygen concentration gas with the oxygen concentration adjusted to 2.0% was circulated in the furnace by diluting the air with nitrogen, and at the same time, the temperature in the furnace was kept at 350° C. After maintaining for 3 hours, the temperature was gradually increased, and the temperature was maintained at 500° C. for 3 hours to perform a coke removal treatment (coke removal step). The calcined catalyst contained 0.87% of carbon components and 0.62% of sulfur components. The catalyst after the coke removal treatment was referred to as RHBT-1...

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Abstract

Provided is a method for reactivating a used hydrogenation treatment titania catalyst, wherein the hydrogenation treatment titania catalyst is produced by supporting a catalyst component on a titania carrier and the used catalyst is one which has been used in a hydrogenation treatment of a hydrocarbon oil and therefore has a reduced catalytic activity, said method enabling the catalytic activity of the used catalyst to be increased to a level that is almost the same as that of a newly prepared, unused fresh titania catalyst. A method for reactivating a used hydrogenation treatment titania catalyst, wherein the hydrogenation treatment titania catalyst is produced by supporting a catalyst component on a titania carrier and the used catalyst is one which has been used in a hydrogenation treatment of a hydrocarbon oil and therefore has a reduced catalytic activity, said method comprising: a coke removal step of heating the used catalyst under an oxygen-containing gas atmosphere to remove a carbonaceous component; an impregnation step of impregnating a carbonaceous-component-removed catalyst obtained in the coke removal step with a sugar-containing solution (i.e., a solution containing a sugar); and a drying step of drying a sugar-impregnated catalyst produced in the impregnation step to produce a catalyst on which the sugar is supported.

Description

technical field [0001] The present invention relates to a method for reactivating a used titanium dioxide catalyst for hydrotreatment for reactivating a used titanium dioxide catalyst for hydrotreatment which has been used in the hydrotreatment of hydrocarbon oil and whose catalytic activity has been reduced, and Reactivated regenerated titanium dioxide catalyst for hydrotreating. Background technique [0002] When fossil fuels such as petroleum and coal are burned, sulfur oxides (SOx), nitrogen oxides (NOx), and sulfates (sulfates) derived from sulfur components in fossil fuels, soot (carbon; graphite), SOF (Soluble Organic Fraction (solvent-soluble components) and other particulates are released into the atmosphere together with exhaust gas, and sulfur oxides have a significant adverse effect on the global environment, such as becoming the cause of acid rain and destroying the natural environment of forests, lakes, etc. , and have a greater impact on the ecosystem. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/48B01J27/19B01J27/28B01J38/12B01J38/52B01J38/68C10G45/08
CPCB01J38/12B01J38/48B01J27/19B01J27/28C10G45/04C10G2300/708B01J38/02B01J38/50B01J23/882B01J38/52B01J21/04B01J21/063B01J21/20B01J27/285B01J31/38B01J31/4053
Inventor 井上慎一和田幸隆武藤昭博
Owner CHIYODA CORP
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