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A kind of presulfurization method of hydrogenation catalyst

A hydrogenation catalyst and pre-sulfurization technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of difficulty in controlling the degree of sulfidation and long curing time, and achieve a controllable degree of pre-sulfurization , high degree of vulcanization, the effect of reducing pollution

Active Publication Date: 2020-06-09
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The main purpose of the present invention is to provide a method for presulfurization of hydrogenation catalysts, so as to overcome the defects that the existing in-vehicle vulcanization method is difficult to control the vulcanization degree and the vulcanization time is long

Method used

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  • A kind of presulfurization method of hydrogenation catalyst

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preparation example Construction

[0025] The concrete steps of the preparation method of hydrogenation catalyst of the present invention and presulfurization treatment method are as follows:

[0026] (1) Preparation of catalyst carrier:

[0027] Using alumina carrier, according to the molding method of conventional carrier, knead aluminum hydroxide powder into strip or granular shape, dry and roast to make particles of certain shape and size;

[0028] (2) Loading of active component metals:

[0029] Prepare a solution of the soluble oxygen-containing salt of Group VIB metal Mo or W and Group VIII metal Co or Ni, impregnate the carrier prepared in step (1) by equal volume impregnation method or saturated impregnation method, and heat at 80-140°C Dry for 2 to 16 hours;

[0030] (3) Pre-vulcanization:

[0031] Presulfurize the catalyst impregnated with soluble oxygen-containing salt prepared in step (2), add hydrogenation catalyst, hydrogenation active gas and one or more sulfur-containing compounds into the r...

Embodiment 1

[0034] Embodiment 1: the preparation of catalyst carrier

[0035] Weigh 100g of aluminum hydroxide powder, add 2.2g of scallop powder, mix well, add 70ml of 2wt% nitric acid aqueous solution for acid activation, fully knead into a gel, and extrude it into a clover with a diameter of 2.0mm on an extruder Shaped strips were dried in an oven at 110° C. for 10 hours to obtain a dry carrier. Then, the obtained carrier was broken into strips, and the strips with a length of 3-5 mm were taken and calcined in an air atmosphere at 550° C. in a muffle furnace for 4 hours to obtain a catalyst carrier A.

Embodiment 2

[0036] Embodiment 2: preparation of supported Mo, Co metal catalyst

[0037] Weigh 11g of ammonium molybdate tetrahydrate, add 30ml of deionized water and 15ml of ammonia water, stir and dissolve, then add 3.3g of cobalt nitrate, stir and dissolve to form a solution. Use this solution to impregnate 100 g of the carrier A prepared in Example 1. After the impregnation, put it in an oven at 110°C and dry it for 10 hours, and place the dried catalyst in a muffle furnace at 500°C for 4 hours to obtain the carrier A loaded with Mo, Co metal catalyst B, the catalyst MoO 3 , CoO loadings are: 10wt% and 3wt%.

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Abstract

The invention discloses a pre-sulfurization method of a hydrogenation catalyst, comprising the specific steps of mixing the hydrogenation catalyst with one or more sulfur-bearing compounds, adding the mixture into a reactor, introducing hydrogenation active gas into the reactor, maintaining the inner pressure of the reactor to 1.5-4 MPa, sealing the reactor, and pre-sulfurizing at 220-380 DEG C for 1-6 hours. The pre-sulfurization process is performed in the sealed reactor, the sulfur-bearing compounds may be released massively and instantly during heating, the formed H2S gas has high pressure and concentration, sulfurization can be finished within a short time, and sulfurization degree is high; in addition, by controlling the usage of the catalyst and sulfur-bearing compounds in the reactor, it is possible to achieve controllable pre-sulfurization degree; all the sulfur-bearing materials are nearly consumed, and no pollutant is produced.

Description

technical field [0001] The invention relates to the technical field of preparation of hydrogenation catalysts in the field of petrochemical industry, in particular to an in-still presulfurization method of hydrogenation catalysts. Background technique [0002] In recent years, with the increasing trend of inferior crude oil worldwide, the content of sulfur, nitrogen and aromatics in petroleum products is increasing day by day; (One of the key indicators: sulfur content ≤ 10μg / g), which will be implemented ahead of schedule on January 1, 2017, and oil refining companies are facing severe pressure to upgrade the quality of oil products. Hydrogenation technology is the most effective means to solve the above problems, among which, the preparation technology of efficient hydrogenation catalyst is the key to hydrogenation technology. [0003] Hydrogenation catalysts are generally composed of Group VIB and Group VIII metals or metal oxides with hydrogenation functions and support...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20B01J27/051B01J27/043
CPCB01J27/043B01J27/051B01J37/20
Inventor 李阳兰玲姜增琨吕忠武钟海军侯远东马健波袁晓亮刘坤红康宏敏王书芹葛少辉鞠雅娜朴佳锐赵秦峰
Owner PETROCHINA CO LTD
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