Desulfurization-denitrification integrated flue gas purification equipment and use method thereof

Abstract

The invention relates to the technical field of flue gas purification, in particular to desulfurization-denitrification integrated flue gas purification equipment. The equipment comprises a combustion heating mechanism, a denitrification mechanism, a desulfurization mechanism and a fuel gas storage tank, wherein supporting mechanisms are fixedly arranged at the bottoms of the denitrification mechanism, the desulfurization mechanism and the fuel gas storage tank; the bottom of the combustion heating mechanism communicates with the denitration mechanism through a first communicating pipe; the upper portion of the combustion heating mechanism communicates with the fuel gas storage tank through a gas conveying pipe; and the denitration mechanism communicates with the desulfurization mechanism through a second communicating pipe. According to the equipment, purification treatment of gas desulfurization and denitrification is achieved through combination of mechanical parts of simple structures; the equipment is small in size, easy to manufacture and operate and low in manufacturing cost; and further purification treatment of gas is achieved through a filter plate arranged in a filter structure and spraying treatment, so the pollution degree of gas emission is effectively reduced, and an air environment is protected.

Description

technical field [0001] The invention relates to a flue gas purification device, in particular to a flue gas purification device integrated with desulfurization and denitrification and a method for using the same, belonging to the technical field of flue gas purification. Background technique [0002] Smoke is a mixture of gas and smoke, which is the main cause of air pollution in residential areas. The composition of smoke is very complex, including water vapor, SO2, N2, O2, CO, CO2, hydrocarbons, and nitrogen oxides. Smoke and dust Including fuel ash, coal particles, oil droplets and high-temperature cracking products, etc. Therefore, the pollution of flue gas to the environment is the compound pollution of various poisons. The harm of smoke to the human body is related to the size of the particles. Flying dust with a diameter of less than 10 microns, especially 1-2.5 microns, is the most harmful; [0003] The harm to the human body depends on the composition, concentratio...

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Problems solved by technology

[0006] Chinese patent application number CN108176204A flue gas simultaneous desulfurization and denitrification integrated purification system and purification method, the purification system includes desulfurization and denitrification agent metering feeding system, circulating fluidized bed, spray water supply equipment, gas-solid separation equipment and discharge equipment, desulfurization and denitrification The agent metering feeding system is connected with the circulating fluidized bed, the circulating fluidized bed is provided with a flue gas inlet, the circulating fluidized bed is provided with a spray head, and the gas outlet of the circulating fluidized bed is connected with the gas-solid separation equipment , the gas outlet of the gas-solid separation equipment is connected to the discharge equipment. The purification system desulfurizes and denitrates the flue gas simultaneously through the same circulating fluidized bed, which reduces the cost of flue gas desulfurization and denitrification; the purification method is aimed at coal-fired flue gas and steel industry sintering Due to the low temperature of the flue gas, calcium-based absorbents and sodium bicarbonate are used as desulfurization and denitrification agents to simultaneously desulfurize and denitrate the flue gas. The purified flue gas meets the relevant emission standards, and the by-products have certain economic benefits; but this purification equipment Larger volume, difficult to manufacture, higher cost

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