In-situ optimization of titanium-containing blast furnace slag preparation method for photothermal coupling flue gas denitrification catalyst

A denitrification catalyst, photothermal coupling technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve difficult recycling, waste of resources, environmental pollution and other problems, to achieve the effect of simple and easy in-situ optimization process, uniform dispersion, and simple and easy reconstruction process
CN108514876BActive Publication Date: 2021-02-05ANHUI UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI UNIVERSITY OF TECHNOLOGY
Publication Date
2021-02-05

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Abstract

The invention provides a method for in-situ optimization of titanium-containing blast furnace slag to prepare a photothermal coupling flue gas denitrification catalyst, which belongs to the technical field of blast furnace slag application. In this method, titanium-containing blast furnace slag powder and MnO 2 The powder was ground and mixed evenly and placed in a crucible, heated to a molten state and kept for 1 hour, then naturally cooled to obtain in-situ optimized titanium-containing blast furnace slag, and then the in-situ optimized titanium-containing blast furnace slag powder was mixed with Na 2 CO 3 The powder is mixed and ground evenly and placed in a crucible to obtain reconstituted titanium-containing blast furnace slag. Put the reconstituted titanium-containing blast furnace slag powder in hydrochloric acid solution, stir and react for 20-80 minutes at a temperature of 20-60°C, and then filter and washed with water until neutral, and dried to obtain a photothermal coupling flue gas denitrification catalyst. The invention is simple and easy to operate, effectively realizes the recovery and utilization of the Ti component in the titanium-containing blast furnace slag, increases the added value of the titanium-containing blast furnace slag, and broadens the application field of the blast furnace slag; Reach 93% denitrification efficiency.
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Description

Technical field:

[0001] The invention belongs to the technical field of blast furnace slag application, and in particular relates to a method for preparing a photothermal coupling flue gas denitrification catalyst by using titanium-containing blast furnace slag as a raw material. Background technique:

[0002] With the progress of society and the development of science and technology, and the continuous improvement of the quality of life, human demand for non-renewable mineral resources has increased sharply, and a large amount of metallurgical solid waste and toxic and harmful gases have been produced in metal smelting. For example: Panzhihua Iron and Steel mainly adopts the blast furnace smelting process to smelt vanadium-titanium magnetite, which produces a large amount of titanium-containing blast furnace slag, accompanied by the discharge of a large amount of toxic and harmful waste water and waste gas. Although scientists have done a lot of research on it, they have no...

Claims

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