A Catalyst for Pyrolyzing Coking Wastewater Using Converter High-temperature Flue Gas

Abstract

The invention relates to a catalyst for pyrolyzing coking wastewater by using converter high-temperature flue gas and an application method thereof, belonging to the technical field of ferrous metallurgy and chemistry. The chemical formula of the catalyst comprises the following materials in percentage by weight: 6.50-12.50% of titanium potassium oxalate, 4.80-10.00% of 18-niobium tungsten manganese phosphate, and the balance of water. After the materials are weighted according to determined formula contents, the titanium potassium oxalate is added into the water to uniformly stir firstly, then the 18-niobium tungsten manganese phosphate is weighted and added into the water, and the obtained product is uniformly stirred. The application method is implemented through the steps of when the catalyst is used, adding the catalyst into coking wastewater in a ratio that the catalyst accounts for 0.1% mass percent of the coking wastewater, and then uniformly stirring the obtained product. The invention provides a catalyst and preparation and application methods thereof, and the catalyst is simple in formula, remarkable in effect, lower in cost, simple in application method, and suitable for pyrolyzing coking wastewater by using converter high-temperature flue gas; and by using the catalyst, the pyrolyzing efficiency of coking wastewater in converter high-temperature flue gas can be effectively improved.

Description

Technical field: [0001] The invention relates to a catalyst for pyrolyzing coking waste water by using converter high-temperature flue gas, and belongs to the technical field of iron and steel metallurgy and chemical industry. Background technique: [0002] In the converter dedusting system, after the flue gas passes through the heat exchange boiler in the flue system, the temperature of the flue gas is 850 ° C ~ 1000 ° C. A large amount of water is sprayed into this position to evaporate and cool the flue gas to cool the flue gas. To about 200 ℃, this process not only conducts dust electrification conditioning treatment on the flue gas, but also performs coarse dust removal, but the cooling process causes a large amount of sensible heat loss of the flue gas and consumes a large amount of water resources. The water consumption is about 0.1 m3 / ton of steel. [0003] It is difficult to meet the emission targets of coking wastewater through biochemical treatment, especially th...

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Problems solved by technology

[0005] In view of the incomplete pyrolysis of organic matter in coking wastewater in the prior art in the high-temperature flue gas of the converter, the present invention provides a catalyst for pyrolyzing coking wastewater by using the high-temperature flue gas of the converter