Flue gas dust-removing and sulfur-removing system

Abstract

The invention relates to a flue gas dust-removing and sulfur-removing system. The flue gas dust-removing and sulfur-removing system comprises a flue gas pretreatment device and a flue gas sulfur-removing device which are connected sequentially through a flue gas pipeline. According to the flue gas dust-removing and sulfur-removing system provided by the invention, coarse-particle and fine-particle dust is separated from high-temperature flue gas by filtering for many times by physical filtration and static adsorption methods and by effectively settling, and residual volatile matters and carbon powder of the high-temperature flue gas are combusted, so that the flue gas is purified well and the system is favorable for the load of the subsequent flue gas sulfur-removing equipment; digital detection equipment is also provided and digital detection signals can be output to a main control device, so that the automatic control purpose is achieved. In addition, the sulfur-removing device provided by the invention is simple in structure and convenient to maintain, and greatly reduces the operating cost of a dry method treatment device during flue gas treatment. A slurry discharge port is also provided, so that the intermediate product of the reaction of the ammonia water and sulfur dioxide of the flue gas can be discharged through the slurry discharge port for standby. A good sulfur-removing effect is achieved and a sulfur-removed byproduct can be prepared.

Description

technical field [0001] The invention relates to a waste flue gas dust removal and desulfurization treatment device. Background technique [0002] my country is one of the few countries in the world that use coal as the main energy source. Coal accounts for more than 70% of my country's primary energy production and consumption. The emission of combustion waste gas such as sulfur dioxide and nitrogen oxides has formed a huge environmental pollution. , It is imperative to fundamentally control the pollution caused by the discharge of sulfur dioxide and nitrogen oxides. [0003] Because a large amount of flue gas and fly ash will inevitably be produced in industrial production, and the flue gas also contains a large amount of fine particle dust, the direct discharge of these dusts will cause serious pollution to the environment, cause varying degrees of damage to the ecological environment, and bring harm to people. hazards to health and life. Environmental protection organiza...

AI Technical Summary

Problems solved by technology

[0003] Because a large amount of flue gas and fly ash will inevitably be produced in industrial production, and the flue gas also contains a large amount of fine particle dust, the direct discharge of these dusts will cause serious pollution to the environment, cause varying degrees of damage to the ecological environment, and bring harm to people. harm to health and life

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