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Method for preparing prevulcanized hydrofining catalyst

A technology for hydrorefining and manufacturing methods, which is applied in the directions of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of decreased dispersion, low activity recovery rate of regenerated catalysts, etc., and achieves good activity recovery. , No irritating odor, no pollution to the production environment

Active Publication Date: 2015-06-03
JIANGSU KECHUANG PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the technical solution disclosed in this patent effectively solves the problem of conventional coke regeneration in the prior art, it leads to the aggregation of the original highly dispersed metal components in the new catalyst, which leads to a decrease in dispersion and a low activity recovery rate of the regenerated catalyst.

Method used

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  • Method for preparing prevulcanized hydrofining catalyst
  • Method for preparing prevulcanized hydrofining catalyst
  • Method for preparing prevulcanized hydrofining catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1: KF-848 standby catalyst for production of presulfided hydrotreating catalyst

[0075] KF-848 is a catalyst prepared by STARS (Super Type II Active Reaction Sites) technology. This invention is used to regenerate and pre-vulcanize the old KF-848 agent with an oil content of ≤5%. Prepare a vulcanized oil additive according to Case 1. KF- The mass ratio of 848 regenerated catalyst and sulfurized oil additive is 100:14. The experimental data are shown in Table 2.

[0076] The experimental data that table 2KF-848 waits for living catalyst to do

[0077]

Embodiment 2

[0078] Example 2: Production of presulfided hydrofining catalyst with DC-2118 spent catalyst

[0079] DC-2118 is a catalyst prepared by Criterion Company of the United States using Cetinel technology. The invention is used to regenerate and pre-vulcanize the old DC-2118 agent with an oil content of ≤5%. Ratio of auxiliary agent DPTT to prepare vulcanized oil additive, the mass ratio of DC-2118 regenerated catalyst and sulfurized oil additive is 100:16.

[0080] Table 3DC-2118 experimental data done by the catalyst to be born

[0081]

[0082] As shown in Table 2 and Table 3, the active metal redispersion represented by the data is a qualified product after chemical treatment, and the experiment has achieved the expected effect.

[0083] The activity evaluation results of KF-848 and DC-2118 presulfided hydrofining catalysts of the present invention are shown in Table 4.

[0084] Table 4 Evaluation results of KF-848 and DC-2118 presulfided hydrotreating catalysts

[0085] ...

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Abstract

The invention belongs to the technical field of application of hydrogenation catalysts and discloses a method for preparing a prevulcanized hydrofining catalyst. The method comprises the following steps: firstly, carrying out charring treatment on a deactivated spent catalyst so as to obtain a regenerated catalyst; then, adding a vulcanized oil aid into the regenerated catalyst; and finally, drying so as to obtain the prevulcanized hydrofining catalyst. According to the invention, the out-of-device prevulcanization of STARS and CENTINEL type catalysts by using a hydrogenation catalyst is realized in China for the first time, such defects of unit in-device prevulcanization as long time, large cost, serious pollution and difficult operation are overcome; and in a lab, an organic sulfur compound is selected as an intermediate additive, and a contrast optimization test under various process conditions proves that the prevulcanized hydrofining catalyst has the advantages of high quality, short prevulcanization time, no pungent smell, no pollution to the production environment and the like; and the prevulcanized hydrofining catalyst also has high strength, good activity recovery and great practical value.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation catalyst application, and relates to a manufacturing method of a presulfided hydrogenation refining catalyst, in particular to a hydrogenation catalyst combined with conventional burnt regeneration and chemical treatment activation for special treatment outside the reactor Methods. Background technique [0002] Catalyst is the core of hydrogenation process, catalyst regeneration is an important application technology to restore its activity, and presulfurization is a follow-up supporting technology of modern hydrogenation process. Regeneration and reuse of deactivated hydrogenation catalysts are also important measures to save resources and reduce production costs. [0003] In hydrogenation catalysts, active metal components such as chromium, molybdenum, nickel, and cobalt are dispersed on the carrier in the form of oxides before use, which has low activity and poor stability. Only after pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20C10G45/04
Inventor 顾齐欣孙建宜
Owner JIANGSU KECHUANG PETROCHEM
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