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Inferior diesel hydrogenation catalyst

A low-quality diesel oil and hydrogenation treatment technology, which is applied in the direction of refining to remove heteroatoms, can solve the problems of diesel yield decline, diesel cracking, etc., and achieve the goal of increasing cetane number, high hydrogenation activity, and high diesel yield Effect

Inactive Publication Date: 2006-05-31
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the above hydroconversion catalysts all use Y-type zeolite (or ZSM-5, mordenite or beta zeolite) or amorphous silica-alumina with relatively strong acidity, which will lead to different degrees of partial cracking of diesel oil, and the yield of diesel oil decline

Method used

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preparation example Construction

[0029] The preparation method of catalyst of the present invention is as follows:

[0030] 1) Mix molecular sieve and aluminum hydroxide dry glue, add additives (such as nitric acid, etc.), additives (one or more compounds of titanium, magnesium, zirconium, lanthanum, phosphorus, silicon, boron) and an appropriate amount Water mixed extrusion molding. Drying at 80-160°C for 2-10 hours, calcining at 400-650°C for 2-10 hours to prepare the carrier.

[0031] 2) The soluble salts of tungsten and nickel, one or more compounds of titanium, magnesium, zirconium, lanthanum, iron, phosphorus, silicon, boron and (or) soluble compounds of fluorine, citric acid, tartaric acid, etc. One or more organic acids are dissolved in water to prepare a stable metal impregnation solution.

[0032] 3) The carrier prepared in (1) is impregnated with the solution described in (2), dried at 80-160° C. for 2-10 hours, and calcined at 400-650° C. for 2-10 hours to prepare a catalyst.

[0033] The shape...

Embodiment 1

[0037] Take 200g of GA-383 alumina dry powder (produced by Jiangyan Chemical Auxiliary Factory in Jiangsu Province), add 15g of nitric acid and 200ml of deionized water, knead and extrude it into a strand, dry at 120°C for 4 hours, and bake at 550°C for 4 hours to make a carrier. Catalyst A was prepared by using ammonium metatungstate and nickel nitrate to prepare a metal impregnation solution, impregnating the above-mentioned carrier (see Table 1 for loading capacity, the same below), drying at 120°C for 4 hours, and calcining at 500°C for 4 hours.

Embodiment 2

[0039] Get 200g aluminum oxide dry powder (with embodiment 1) and 30g molecular sieve (ETS-10 and 15g AlPO of 15g hydrogen type 4 -5) Add 15g of nitric acid and 200ml of deionized water, knead and extrude into a rod, dry at 120°C for 4 hours, and bake at 550°C for 4 hours to make a carrier. Prepare the metal impregnation solution with ammonium metatungstate and nickel nitrate, impregnate the above carrier, dry at 120°C for 4 hours, and bake at 500°C for 4 hours to obtain catalyst B.

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Abstract

A hydrotreating catalyst of inferior diesel consists of alumina 20.0í½80.0wt% and molecular sieve 3.0í½60.0w%. The catalyst is prepared by loading at least one Fe, Co and Ni metal of ó° family and MO and W metal of ó÷B family as metal active component and adding one or above oxide or fluorinated compound of titanium, magnesium, zirconium, lanthanum, iron, phosphorus, silicon and boron as active auxiliaries. It can decrease content of sulfur and arenes and increase cetyl value in products. It can be used for cryogenic hydrogenation desulfurization, denitridation and hydrogenation dearomatization.

Description

technical field [0001] The invention relates to a low-quality diesel oil hydrotreating catalyst. technical background [0002] In order to realize the deep desulfurization and dearomatization of diesel oil and produce clean diesel oil, most foreign countries adopt a two-stage process. Tungsten) catalyst to remove most of the sulfur, while in the second stage, a noble metal (platinum) catalyst with strong hydrogenation saturation capacity is used to improve the properties of the oil through deep removal of aromatics. However, this hydrogenation process is relatively complicated, and the original device also needs to be partially modified, and a noble metal catalyst is also used, so the cost is relatively high. In addition, CN01134272.2 also describes a method for deep desulfurization and dearomatization of diesel oil, which is that the raw material oil and hydrogen are mixed into the first reactor, and the hydrogenation reforming catalyst (using zeolite, amorphous silica alu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08
Inventor 赵野张文成申宝剑李会峰王刚张志华沈师孔郭巧霞胡胜刘玉鹏刘文勇曾鹏晖张庆武孙大勇于春林
Owner PETROCHINA CO LTD
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