High-pressure air ash removal device for multi-gun of rotary air pre-heater

Abstract

The invention discloses a rotary air pre-heater multi-port gun high-pressure air deashing device which comprises a boiler rotary air pre-heater, a multi-port gun assembly, an air storage tank and an air compressor unit, the boiler rotary air pre-heater can rotate, one end of the multi-port gun assembly extends into the boiler rotary air pre-heater, the other end of the multi-port gun assembly is connected with the air storage tank, and the air compressor unit is connected with the air storage tank. And the air compressor unit is connected with the air storage tank. In the implementation process, compared with various conventional soot blowers, the high-pressure air soot cleaning device for the multi-port cannon is a novel soot cleaning device system adopting air as a medium and a multi-port power spray pipe as a key structure; air with the pressure of at least 20 bar or above is provided as power energy through the ultrahigh-pressure air compressor unit, the blasting frequency is controlled through the control system, and after the air pre-heater completes proper rotation times, effective cleaning of a full-sector area of the air pre-heater is achieved, the smoke temperature is reduced, the boiler efficiency is improved, and the safety and economical efficiency of boiler operation are achieved.

Description

technical field [0001] The invention belongs to the technical field of a high-pressure air ash cleaning device for a rotary air preheater multi-port cannon, in particular to a rotary air preheater multi-port gun high-pressure air ash cleaning device. Background technique [0002] In the actual operation process of coal-fired power plant boilers, the ash on the rear heating area is a common and inevitable phenomenon. When the ash in the heating area is serious, the heat transfer efficiency of the flue heat exchanger will decrease, the exhaust gas temperature will increase, and the boiler efficiency will decrease; will affect the safe operation of the boiler. Therefore, the existence of ash deposits in the operation of coal-fired power station boilers requires that appropriate soot blowers must be equipped during boiler design and operation. [0003] Due to the advantages of compact structure, saving steel and space, and convenient installation and arrangement, rotary air pr...

AI Technical Summary

Problems solved by technology

However, due to the particularity of its structure, dust accumulation is prone to occur. Excessive dust accumulation will cause heat transfer deterioration, increase resistance, and in severe cases, it will cause blockage of the heating surface, reduce boiler output and even cause shutdown accidents; steam blowing is usually used. Ash, acetylene shock blowing, sonic blowing

However, steam soot blowing technology, due to the characteristics of the structure and medium, the soot blowing gun tube is prone to jamming, failure, steam leakage, etc., consumes high-quality steam, increases the moisture content of the flue gas, etc.; the gas shock soot blower needs to use Acetylene has high operating costs and certain risks. The system is relatively complicated, and there may be squibs, tempering, and carbon deposits during operation; sonic sootblowers have poor sootblowing effects due to insufficient energy. Cannot remove existing dust accumulation

Images