Novel organic sulphur hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and organic sulfur technology are applied in the field of new organic sulfur hydrogenation catalysts and their preparation, which can solve the problems of low conversion and removal efficiency of organic sulfides, reduce the probability of dissolution, stabilize the structure, and improve the activity. Effect

Active Publication Date: 2013-06-19
SHENYANG SANJUKAITE CATALYST
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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 sulf

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 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 200g; ZnO, 36g; iron oxide, calculated as Fe, 4g; molybdenum oxide, calculated as molybdenum, 15g.

[0040] The preparation method of organic sulfur hydrogenation catalyst described in this embodiment, its steps comprise:

[0041] (1) Configure an acetic acid solution with a mass fraction of 0.39wt%;

[0042] (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;

[0043] (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 component solution is prepared;

[0044] (4) Weigh γ-Al 2 o 3 Carrier 200g, then add t...

Embodiment 2

[0047] 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, calculated as Fe, 5g; molybdenum oxide, calculated as molybdenum, 18g.

[0048] Al described in this example 2 o 3 The carrier is prepared by neutralizing material and hydrate with a mass ratio of 1:1.1, which are dried at 120°C for 3 hours, mixed, flaked, and fired at 500°C for 2.5 hours; the hydrate is slurried from pseudoboehmite , pressure filtration preparation; The preparation method of described neutralization material is:

[0049] (a) Mix aluminum hydroxide and LiOH with an equivalent concentration of 2:3 and react at 120°C;

[0050] (b) adding acetic acid to the solution prepared in step (a) for neutralization;

[0051] (c) Taking out the product generated after being neutralized by the acetic acid, washing with water, and pressing to obtain a neutralized material.

[...

Embodiment 3

[0059] 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 300g; ZnO, 44g; iron oxide, 6g as Fe; molybdenum oxide, 21g as molybdenum.

[0060] Al described in this example 2 o 3 The carrier is prepared by neutralizing material and hydrate with a mass ratio of 1:1.2, which are dried at 120°C for 3 hours, mixed, pelletized, and calcined at 500°C for 2.5 hours; the hydrate is slurried from pseudoboehmite , pressure filtration preparation; The preparation method of described neutralization material is:

[0061] (a) Mix aluminum hydroxide and KOH with an equivalent concentration ratio of 2:4 and react at 150°C;

[0062] (b) adding citric acid to the solution prepared in step (a) for neutralization;

[0063] (c) Taking out the product generated after neutralization by the citric acid, washing with water and pressure filtering to obtain the neutralized material.

[0064...

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Abstract

The invention relates to an organic sulphur hydrogenation catalyst, comprising specific parts by weight of Al2O3 carrier, ZnO, iron oxide and molybdenum oxide. ZnO added in the hydrogenation catalyst disclosed by the invention is taken as an assistant, and has excellent synergistic effect together with active components of iron oxide and molybdenum oxide. Compared with the sulphur hydrogenation catalyst in the prior art, the organic sulphur hydrogenation catalyst has high thiofuran conversion and removal efficiency when used for removing organic sulfide such as thiophene in gas.

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 张媛赵素云单鸿飞陈玲玲张楠张婷李博
Owner SHENYANG SANJUKAITE CATALYST
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