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Organic sulphur hydrogenation catalyst and preparation and use methods thereof

A hydrogenation catalyst and organic sulfur technology, which is applied in the field of new organic sulfur hydrogenation catalyst and its preparation, can solve the problems of low conversion and removal efficiency of organic sulfides, and achieve the effect of improving conversion efficiency and conversion rate

Active Publication Date: 2013-07-17
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that when the hydrodesulfurization catalyst in the prior art is used to remove organic sulfides such as thiophene in sulfides, the conversion and removal efficiency of organic sulfides is low, and further provides a A Catalyst for Organosulfur Hydrogenation with High Thiophene Conversion and Removal Efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The organosulfur hydrogenation catalyst described in this embodiment includes the following components by weight: Al 2 o 3 Carrier, with Al 2 o 3 ZnO, 36g; Iron oxide, counted as Fe is 4g; Molybdenum oxide, counted as molybdenum is 15g; Graphite nanofiber, 12g, the diameter of described graphite nanofiber is 120-140nm, length is 90- 100 μm.

[0049] The preparation method of organic sulfur hydrogenation catalyst described in this embodiment, its steps comprise:

[0050] (1) Configure an acetic acid solution with a mass fraction of 0.39wt%;

[0051] (2) Add ferric nitrate to the above-mentioned acetic acid solution, heat and stir until the precipitate dissolves, and the addition amount of the initial raw material ferric nitrate is 4g as Fe;

[0052] (3) Add ammonium molybdate to the solution prepared in step (2), and add ammonia water to dissolve the precipitate while stirring. The amount of ammonium molybdate added is 15 g in terms of molybdenum, and an active comp...

Embodiment 2

[0057] The organosulfur hydrogenation catalyst described in this embodiment includes the following components by weight: Al 2 o 3 Carrier, with Al 2 o 3 Calculated as 250g; ZnO, 40g; Iron oxide, 5g as Fe; Molybdenum oxide, 18g as molybdenum; Graphite nanofiber, 18g, the diameter of the graphite nanofiber is 120-140nm, and the length is 90- 100 μm.

[0058] Al described in this example 2 o 3 The carrier is prepared from neutralizing material and hydrate with a mass ratio of 1:1.1, wherein the hydrate is prepared from pseudo-boehmite through slurrying and pressure filtration; the preparation method of the neutralizing material is as follows:

[0059] (a) Mix aluminum hydroxide and LiOH with an equivalent concentration of 2:3 and react at 120°C;

[0060] (b) adding acetic acid to the solution prepared in step (a) for neutralization;

[0061] (c) Taking out the product generated after being neutralized by the acetic acid, washing with water, and pressing to obtain a neutral...

Embodiment 3

[0071] The organosulfur hydrogenation catalyst described in this embodiment includes the following components by weight: Al 2 o 3 Carrier, with Al 2 o 3ZnO, 44g; Iron oxide, 6g as Fe; Molybdenum oxide, 21g as molybdenum; Graphite nanofiber, 15g, the diameter of the graphite nanofiber is 120-140nm, and the length is 90- 100 μm.

[0072] Al described in this example 2 o 3 The carrier is prepared from neutralizing material and hydrate with a mass ratio of 1:1.2, wherein the hydrate is prepared from pseudo-boehmite through slurrying and pressure filtration; the preparation method of the neutralizing material is as follows:

[0073] (a) Mix aluminum hydroxide and KOH with an equivalent concentration ratio of 2:4 and react at 150°C;

[0074] (b) adding citric acid to the solution prepared in step (a) for neutralization;

[0075] (c) Taking out the product generated after neutralization by the citric acid, washing with water and pressure filtering to obtain a neutralized mater...

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Abstract

The invention relates to an organic sulphur hydrogenation catalyst. The catalyst comprises specific parts of Al2O3 carriers, ZnO, iron oxide and molybdenum oxide and graphite nanofibers by weight, wherein the diameters of the graphite nanofibers are 120-140nm, and the lengths of the graphite nanofibers are 90-100micrometers. According to the organic sulphur hydrogenation catalyst, the graphite nanofibers are added to synergize with other active metal constituents, so that the thiophene conversion efficiency is effectively increased; and the graphite nanofibers serve as a material which can absorb hydrogen, the surfaces of the graphite nanofibers are provided with a great quantity of adsorption positions which can store hydrogen, hydrogen molecules are absorbed on the surfaces of the graphite nanofibers, and active hydrogen atoms which are positioned on the surfaces of the graphite nanofibers and among the active metal constituents can effectively hydrogenate thiophene compounds in a hydrogenation catalyzing process, so that the thiophene conversion efficiency is improved.

Description

technical field [0001] The invention relates to a novel organic sulfur hydrogenation catalyst and a preparation method thereof, belonging to the technical field of desulfurizers. Background technique [0002] my country is the largest country in coke production and export. With the continuous improvement of my country's economic level, the coke industry has developed rapidly. However, in the coking process, a large amount of by-product coke oven gas will be produced, and coke oven gas contains H 2 S, CS 2 , thiophene and other harmful impurities, these impurities not only corrode the equipment, block the pipeline, but also lead to the deactivation of the catalyst and affect the catalytic effect. where H 2 S is the most typical impurity, and thiophene is one of the sulfides with the highest chemical stability and the most difficult to remove. Therefore, how to improve the conversion rate of organic sulfur hydrogenation catalysts to thiophene, increase the service life of...

Claims

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Application Information

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IPC IPC(8): B01J23/881C10K1/34
Inventor 赵文涛刘彦芳郭玉峰
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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