Gecko type efficient air ash removal system of rotary air pre-heater

Abstract

The invention discloses a rotary air pre-heater gecko-type efficient air ash removal system which comprises an air compressor set, an air storage tank and a gecko-type power spray pipe, the air compressor set is connected with the air storage tank through a pipeline, the gecko-type power spray pipe is connected with the air storage tank, and the gecko-type power spray pipe is located in a boiler rotary air pre-heater. The boiler rotary air pre-heater is of a multi-layer structure, and the number of the air storage tanks and the number of the gecko type power spray pipes are the same as the number of layers of the boiler rotary air pre-heater. Furthermore, the gas storage tank boiler rotary air pre-heater is provided with three layers. In the implementation process, air with proper pressure is provided as power energy through the air compressor unit, the air source pressure of the gecko power spray pipe is controlled through the control system, continuous cleaning in the rotating working process of the air pre-heater is achieved along with rotation of the air pre-heater, adjustment is conducted according to the dust deposition condition, accurate and efficient dust cleaning of the air pre-heater is achieved, and the cleaning efficiency of the air pre-heater is improved. And the flue gas 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 gecko-type high-efficiency air ash cleaning system of a rotary air preheater, in particular to a gecko-type high-efficiency air ash cleaning system of a rotary air preheater. 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 superheater, reheater, economizer and air preheater will decrease, the exhaust gas temperature of the boiler will increase, the efficiency of the boiler will decrease, and the heating surface will be overheated, which will aggravate the corrosion of the heating surface. , shorten the life of the heating surface, and in severe cases will affect the normal operation of the boiler, and even affect the personal safety of inspection personnel. Therefore, ash deposition is a difficult proble...

AI Technical Summary

Problems solved by technology

However, due to the particularity of its structure, it is prone to ash accumulation. Excessive ash accumulation will deteriorate heat transfer and increase resistance. In severe cases, it will cause blockage of the heating surface, reduce boiler output and even cause shutdown accidents.

[0004] Steam sootblowing technology, due to the characteristics of the structure and medium, the sootblower barrel is prone to jamming, failure, steam leakage, etc., consumes high-quality steam, increases the moisture in the flue gas, etc.; the gas shock sootblower uses acetylene, The operation cost is high, and it is dangerous. During the operation, there may be squibs, tempering, and carbon deposits; the sonic soot blower, due to insufficient energy, has poor soot blowing effect, and basically cannot remove the existing deposits. Ash

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