Comprehensive treatment device of cement rotary kiln flue gas

Abstract

The invention discloses a comprehensive treatment device of cement rotary kiln flue gas. The comprehensive treatment device of cement rotary kiln flue gas comprises a waste gas inlet pipeline, a denitration device, a dust removal device, a waste gas outlet pipeline and a dust removal bag; wherein the waste gas inlet pipeline is arranged obliquely upward; the denitration device is arranged inside the waste gas outlet pipeline; the dust removal bag is vertically arranged at the back end of the waste gas inlet pipeline; a vibration motor is arranged at the lateral side of the dust removal bag; the waste gas outlet pipeline is communicated with the upper part of the dust removal bag. The comprehensive treatment device is ingenious in structure, simple and practical; in working, containing-dust flue gas levitates upwards along the waste gas inlet pipeline; the containing-dust flue gas must firstly pass through a damp filter screen and then be cut, the denitration efficiency is high; primary cooling and dust removing can be realized, and the effect of the dust removal bag is added, so that the dust removal effect is good; the vibration motor can make the dust removal bag not block; arc-shape vanes can accelerate the gas linear speed when in high speed rotating; the reaction process improves 30 percent to 38 percent, the treating agent can be recycled and reused, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment equipment, and in particular relates to a comprehensive treatment device for flue gas of a cement rotary kiln. Background technique [0002] At present, the emission of nitrogen oxides in my country's cement industry accounts for about 10% of the total emissions, and it is the third largest source of nitrogen oxide emissions in my country. Cement kiln denitrification has become one of the key areas of environmental protection. The state stipulates that the NOx emission concentration at the kiln tail of existing enterprises should not exceed 400mg / Nm3. The current cement enterprises generally adopt various methods such as multi-stage combustion in the kiln and low-nitrogen burners to make it meet the current national standard of 800mg / m3. (standard), with the implementation of the new national standards, the control indicators will be more stringent. At this stage, most small and mediu...

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Problems solved by technology

The state stipulates that the NOx emission concentration at the kiln tail of existing enterprises should not exceed 400mg / Nm3. The current cement enterprises generally adopt various methods such as multi-stage combustion in the kiln and low-nitrogen burners to make it meet the current national standard of 800mg / m3. (standard), with the implementation of the new national standards, the control indicators will be more stringent. At this stage, most small and medium-sized cement enterprises cannot meet the emission requirements stipulated in the standards. Therefore, from the perspective of enterprises, how to maintain economic On the basis of reliability and practicability, find a denitrification and dust removal method suitable for the enterprise

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