Device and method for treatment of calcination tail gas

Abstract

A device and method for treatment of a calcination tail gas. A first foam-removing grating, a second foam-removing grading and a surfactant in a four-stage spraying column (wherein the surfactant includes 0.01% of sodium dodecyl benzene sulfonate and 0.29% of Na2SO4) are employed in a cooperative manner so that PM2.5 micro-particles in the end tail gas can be reduced by more than 95%. Through four-stage spraying treatment, including a first-stage spraying treatment, a second-stage spraying treatment, a third-stage spraying treatment, and a fourth-stage spraying treatment, harmful gases, such as nitric oxides, carbonic oxides, sulfides and the like, can be reduced by more than 99%. In the device, through arrangement of a waste liquid circulating tank, comprehensive recycle of a waste liquid can be achieved. Waste water formed by ammonia water, which is employed in the spraying process, after the ammonia water absorbing the acidic gases can be used as a source of raw materials of production of chemical fertilizers. By means of the method for treatment of the calcination tail gas, deficiencies in an industrial tail gas treatment method in the prior art is improved. The method and the device are quite good in economic benefit and social benefit.

Description

technical field [0001] The invention relates to a tail gas treatment device and a treatment method thereof, in particular to an industrial calcination tail gas treatment device and a treatment method thereof. Background technique [0002] In the process of industrialization, more and more people pay more and more attention to the harm of the exhaust gas emitted by industrial production to the environment. The tail gas produced by industrial calcination mainly contains nitrogen oxides, carbon oxides, sulfides and tiny solid particles. At present, the commonly used tail gas methods include bag dust removal method and electrostatic dust removal method. The electrostatic precipitator method has huge equipment and high price; the bag filter method requires high filter cloth due to the acid gas contained in the tail gas, and is not suitable for large-scale application. Contents of the invention [0003] The invention provides a calcination tail gas treatment device and a treat...

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Problems solved by technology

[0003] The invention provides a calcination tail gas treatment device and a treatment method thereof which are simple in operation, small in floor area, large in amount of tail gas to be treated, low in comprehensive production cost and convenient in maintenance, so as to solve the shortcomings of the existing calcination tail gas treatment technology

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