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Hydrodesulfurization catalyst, preparation method and applications thereof

A hydrodesulfurization and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low catalyst activity and few active components, achieve high hydrodesulfurization performance, improve Active, interaction-reducing effects

Active Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Among the above-mentioned supported catalysts, the activity of the catalyst is low due to the low content of the active ingredient

Method used

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  • Hydrodesulfurization catalyst, preparation method and applications thereof
  • Hydrodesulfurization catalyst, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of modified titania-alumina composite support:

[0036] The titania-alumina composite carrier was prepared according to the method in Example 1 of the published patent CN1184289C. Take the specific surface area as 160m 2 / g, 90g of clover-shaped alumina with a pore volume of 0.58ml / g and a most probable pore diameter of 130 angstroms, impregnated with 53ml of titanium sulfate in a 0.557g / ml dilute sulfuric acid solution, stirred for 15 minutes, and dried at 120°C for 8 hours Then, calcined at 900°C for 4 hours to obtain titanium oxide-alumina composite oxide A 1 , namely titania-alumina composite support. The resulting titanium oxide-alumina composite oxide A 1 The titanium oxide content is 10% by weight, and the specific surface area is 144m 2 / g, the pore volume is 0.56ml / g, and the most probable pore diameter is 125 angstroms.

[0037] Get 27.7g of calcium nitrate tetrahydrate and 4.5g of ammonium molybdate tetrahydrate to form a mixed solution, add ...

Embodiment 2

[0041] The steps are the same as in Example 1, except that the immersion solution contains 4.7g of nickel nitrate, 1.70g of diammonium hydrogen phosphate and 1.55g of cerium nitrate. Catalyst data are shown in Table 1.

Embodiment 3

[0043] Preparation of modified titania-alumina composite support:

[0044] The steps are the same as in Example 1, except that the amount of calcium nitrate tetrahydrate in the mixed solution is 15.6g, and the amount of ammonium molybdate tetrahydrate is 8.7g.

[0045] Catalyst preparation:

[0046] The steps are the same as in Example 1, except that 20 ml of an impregnation solution containing 7.1 g of nickel nitrate, 2.61 g of diammonium hydrogen phosphate and 3.70 g of cobalt nitrate is prepared. Catalyst data are shown in Table 1.

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Abstract

The present invention provides a hydrodesulfurization catalyst, which comprises a modified titania-alumina composite carrier and nickel phosphide loaded on the carrier, wherein the modified titania-alumina composite carrier comprises an alkaline earth metal component and a group VIB metal component. The catalyst of the present invention has low temperature hydrogenation activity and good stability when the catalyst is used for the C5-C9 distillate oil hydrodesulfurization process. The present invention further provides a preparation method of the catalyst and a C5-C9 distillate oil hydrodesulfurization method.

Description

technical field [0001] The invention relates to a hydrodesulfurization catalyst, in particular to a hydrodesulfurization catalyst obtained by loading nickel phosphide on a modified composite carrier, its preparation method and its application. Background technique [0002] Petroleum fractions contain impurities such as sulfur, nitrogen, oxygen, and metals. The existence of these impurities will not only affect the properties of the oil, but also release harmful gases that pollute the environment during use and reduce the activity and life of the catalyst. In the hydroprocessing process of petroleum hydrocarbons as raw materials, the raw materials are reacted with hydrogen under high temperature and high pressure conditions to remove harmful substances in the raw materials, such as organic sulfides, organic nitrogen compounds, and organometallic compounds. [0003] At present, catalytic hydrodesulfurization (HDS) technology is the main way to reduce the sulfur content of gaso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19C10G45/08
Inventor 杜周柴忠义纪玉国任玉梅张富春季静
Owner CHINA PETROLEUM & CHEM CORP
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