Dust removal device for flue gas waste heat utilization

Abstract

The invention discloses a dust removal device for flue gas waste heat utilization, and belongs to the technical field of flue gas treatment. The device comprises a first pipeline, one end of the firstpipeline is connected with a first connecting pipe, one end of the first connecting pipe is connected with a second pipeline, one end of the first connecting pipe is connected with a third pipeline,one end of the second pipeline and one end of the third pipeline are connected with a second connecting pipe, and one end of the second connecting pipe is connected with a first air outlet pipe. Through the first pipeline, the first connecting pipe, the second pipeline and the third pipeline, on one hand, water in the water pipe is better heated by heat, the cost is better saved, and the utilization efficiency of final waste heat of flue gas is improved; the contact area between the water pipe arranged in an internal spiral cone shape and the heat is increased, so that the water pipe is heatedfaster; through a water inlet pipe and a water outlet pipe on a water tank, water changing and draining can be better carried out; and meanwhile, a heat absorption plate and a heat release plate better collect waste heat in the flue, and the waste heat is collected in a heat collection box in a centralized mode.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a dust removal device for utilizing waste heat of flue gas. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and pyrolysis products. The pollution of flue gas to the environment is the compound pollution of various poisons. The harmfulness of smoke to the human body is related to the size of the particles. The most harmful to the human body is the floating dust with a diameter of less than 10um, especially the 1-2.5um floating dust is the most harmful. [0003] However, the flue gas not only contains a large amount of dust, but also contains a large amoun...

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Problems solved by technology

[0003] However, the flue gas not only contains a large amount of dust, but also contains a large amount of heat. However, some existing equipment cannot effectively utilize the waste heat, resulting in great waste. At the same time, the flue gas containing waste heat affects The efficiency of flue gas dust removal makes work inefficient

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