Technical improvement method for optimizing nitrate reduction of vanadium-titanium pellet gas

Abstract

The invention relates to the technical field of pellet gas, and discloses a technical improvement method for optimizing nitrate reduction of vanadium-titanium pellet gas. Combustion characteristics ofblast furnace gas are matched with that of coke oven gas. When the blast furnace gas is added and mixed, the pressure difference between the blast furnace gas and the coke oven gas is reduced as muchas possible, so that the blast furnace gas and the coke oven gas can be effectively mixed; before the blast furnace gas is mixed in, after normal ignition of pure coke oven gas, high furnace gas withthe appropriate ratio is gradually added, the ratio of the blast furnace gas to the coke oven gas is 2:1, the blast furnace gas is gradually added appropriately, and adding and observation are simultaneously carries out step by step. By means of the technical improvement method for optimizing nitrate reduction of vanadium-titanium pellet gas, the generation amount of the thermal NOx in the flue gas after combustion is reduced, meanwhile, a partition wall of a circular cooler is reformed, so that the temperature of the return air is increased, stable increase of the temperature in a rotary kiln is guaranteed, the phenomenon that the combustion is insufficient because the return temperature is too low is avoided, the roasting effect of briquettes is guaranteed, and the generation amount ofthe NOx is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of pellet gas, in particular to a technical improvement method for optimizing and reducing nitrification of vanadium-titanium pellet gas. Background technique [0002] Vanadium and titanium, as rare metals, have a wide range of uses. It is understood that vanadium is mainly used in alloys to improve the performance of steel. At the same time, vanadium batteries have been commercially used in wind power energy storage, Photovoltaic energy storage and power grid peak shaving, titanium is widely used in traditional fields such as bleaching, paint and paper making, and processed titanium is used in high-end aerospace, military and other fields. Experts have predicted that with the rapid development of new energy With the development and improvement of steel performance requirements, the future application prospects of the two materials will be very broad. On August 15, 2017, the pellet workshop introduced natura...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a technical improvement method for optimizing the reduction of nitrification of vanadium-titanium pellet gas, which has the advantages of ensuring the roasting effect and reducing the generation of thermal NOX in the flue gas, and solves the problem of mixed use of natural gas. Or pure coke oven gas, the flame is concentrated and the combustion temperature is high, causing a large amount of thermal NOX in the flue gas, and the NOX content in the coke oven gas is high, causing the flue gas to fail to meet the emission standards and increasing the burden on environmental protection