Movable impulse type compressed air soot blower and using method thereof

Abstract

The invention discloses a movable impulse type compressed air soot blower and a using method thereof. The movable impulse type compressed air soot blower comprises an air compressor and an air storage tank, wherein an air outlet of the air compressor is communicated with an air inlet of the air storage tank through a communication pipe, a refrigeration dryer, a filter and a heater are sequentially installed on the communication pipe, an air feeding header pipe bent upwards is communicated with the upper end of the outer wall of the air storage tank, a manual main control valve and a pressure sensor are installed on the horizontal section of the air feeding header pipe from left to right in sequence, a plurality of air feeding branch pipes which are horizontally distributed at intervals are communicated with the longitudinal section of the air feeding header pipe, a first manual branch control valve, a pressure stabilization air chamber, an electromagnetic pulse valve and a second manual branch control valve are installed on each air feeding branch pipe from left to right in sequence, a plurality of blowing components which are distributed in parallel at intervals are perpendicularly communicated with the portion, at the right side of the second manual branch control valve, of each air feeding branch pipe in a penetrating mode, and the blowing components conduct blowing facing the space above an SCR reactor catalyst. By the adoption of the movable impulse type compressed air soot blower, ash removal can be achieved automatically, the effect is stable, and the service life of the catalyst is not affected.

Description

Technical field: [0001] The invention relates to a cement kiln SCR denitrification system, in particular to an active pulse type compressed air soot blower and a using method thereof. Background technique: [0002] With the increasingly stringent requirements for nitrogen oxide emissions from cement production lines, the use of selective catalytic reduction (SCR) for denitrification is the main research direction for denitrification of cement production lines. Since the cement kiln flue gas contains dust, when the flue gas passes through the catalyst bed, the dust will deposit on the surface of the catalyst, block the pores of the catalyst, and reduce the denitrification efficiency. In order to prevent dust from depositing on the catalyst layer and improve the denitrification efficiency, a soot blowing device should be installed on each layer of catalyst. [0003] Commonly used sootblowers include sonic sootblowers, steam sootblowers and compressed air sootblowers. Due to ...

AI Technical Summary

Problems solved by technology

Due to the strong viscosity of the flue gas in the flue gas of the cement kiln, the surface of the catalyst layer is easy to slag. It has been proved in engineering practice that the soot blowing strength of the sonic soot blower is not high, and the use effect is unstable, so it is not suitable for the denitrification soot blowing system of the cement kiln.

Steam soot blower increases flue gas humidity, accelerates catalyst deactivation, and affects catalyst service life

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