Liquid nano-catalysis desulfurizer for new dry process cement kiln and preparation method thereof

Abstract

The invention discloses a liquid nano-catalysis desulfurizer for a new dry process cement kiln and a preparation method thereof. The liquid nano-catalysis desulfurizer, which is prepared from nano cerium oxide, nano thorium oxide, nano titanium oxide, nano nickel oxide, nano calcium oxide, nano calcium carbonate, carbomite, potassium permanganate, sodium bismuthate, AEO9, octyl phenol polyoxyethylene ether, PEG 200, polymaleic acid, fatty acid polyglycol ester, and diethylene glycol; the allowance is water. In the technical scheme, europium oxide, ferric acetylacetonate and polyoxyethylene ether are added. The desulfurization degree of the liquid nano-catalysis desulfurizer is 100%; sulfur dioxide in smoke gas can be discharged to zero.

Description

technical field [0001] The invention belongs to the technical field of energy saving and environmental protection, and in particular relates to a novel liquid nano catalytic desulfurizer for dry-process cement kilns and a preparation method thereof. Background technique [0002] my country is a big cement producing country. From January to December 2016, the output of cement was 2.4 billion tons. Cement has played a pivotal role in the development of human beings and society. At the same time, it has also brought harm to human beings and the ecological environment, including the emission of dust and harmful gases. , seriously damaged the atmospheric environment and human health. Especially the emission of sulfur dioxide in the atmosphere is more serious to environmental pollution. After sulfur dioxide is oxidized in the atmosphere, it will form sulfate aerosol, and its toxicity can be increased by more than 10 times, which can cause cough, chest tightness, eye irritation, dy...

AI Technical Summary

Problems solved by technology

After sulfur dioxide is oxidized in the atmosphere, it will form sulfate aerosol, and its toxicity can be increased by more than 10 times, which can cause cough, chest tightness, eye irritation, dyspnea, etc. Plant growth; and acid rain produced by sulfur dioxide will reduce soil fertilizer efficiency and damage soil structure

Among them, the FGD wet desulfurization technology occupies a large area, generally requiring about 500m2; the investment cost is high, with a one-time investment of 15-20 million yuan, and the operating cost is high, above 6 yuan / ton of clinker

The dry desulfurization technology occupies a small area, generally about 30m2; the investment cost is low, and the desulfurization efficiency is low, only 60-70%; the operating cost is high, and at least 8 yuan / ton of clinker is required; short-term sulfur fixation cannot be continuously and stably up to the standard , resulting in fluctuations in the composition

Ammonia desulfurization technology has low investment costs, poor thermal stability of ammonium sulfate, and secondary decomposition causes cyclic enrichment, which cannot be continuously and stably up to the standard; the formation of ammonium sulfate aerosol has a great impact on dust collection, and equipment corrosion and ammonia escape cannot be controlled; some cement plants spray NOX significantly increased after ammonia

The desulfurizers currently on the market have the disadvantages of high requirements on operation and equipment, high energy consumption, high cost, and unsatisfactory desulfurization effect.

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