A kind of polyvalent metal oxide desulfurizer and preparation method thereof

Abstract

The invention provides a multivalent metal oxide desulfurizer, which is composed of the following components in parts by mass: 70-85 parts of adsorbent, 10-20 parts of reducing agent, and 5-10 parts of grinding aid; The adsorbent is composed of the following components in parts by mass: 15-20 parts of hematite ore, 15-20 parts of magnetite ore, 15-20 parts of soft manganese ore, 20-25 parts of red copper ore, the reducing agent It consists of the following components in parts by mass: 5-10 parts of magnesium powder, 5-10 parts of iron powder, and the grinding aid is composed of the following components in parts by mass: 4-8 parts of anthracite, silicon dioxide 1-2 parts, the raw material cost of the desulfurizer is low, the preparation method is simple, the use conditions are mild, and the desulfurization efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of energy saving and environmental protection, and in particular relates to a multivalent metal oxide desulfurizer and a preparation method thereof. Background technique [0002] The reduction of overcapacity in the coal industry is an important part of the country's economic structural reform. Hydrofining coal pyrolysis synthesis gas to produce high-quality chemical raw materials such as olefins, methanol, and ethylene glycol is an important measure for the sustainable development of coal chemical enterprises. Sulfides in coal pyrolysis synthesis gas such as CS 2 、CH 3 SH, COS and thiophene, etc., can easily poison and deactivate downstream catalysts, shorten catalyst life, and cause economic losses. Existing sulfide removal methods, such as hydrogenation, require higher hydrogen pressure to increase the hydrogen concentration on the surface of the catalyst (hydrogen pressure 2.5-15MPa), and transition me...

AI Technical Summary

Problems solved by technology

Hydrofining coal pyrolysis synthesis gas to produce high-quality chemical raw materials such as olefins, methanol, and ethylene glycol is an important measure for the sustainable development of coal chemical enterprises. Sulfides in coal pyrolysis synthesis gas such as CS 2 、CH 3 SH, COS and thiophene, etc., can easily poison and deactivate downstream catalysts, shorten catalyst life, and cause economic losses

Existing sulfide removal methods, such as hydrogenation, require higher hydrogen pressure to increase the hydrogen concentration on the surface of the catalyst (hydrogen pressure 2.5-15MPa), and transition metals such as Co-Mo, Ni-Mo, and Ni-W are used to support Chemical and physical changes such as hydrocarbon cracking, CO disproportionation, and carbon deposition are prone to occur on the surface of the catalyst, and the operating conditions are high (temperature 280-420°C). High, unsatisfactory desulfurization effect, etc.