A retractable soot blower

Abstract

The invention provides an extensible soot blower comprising a support system, air inlet systems, a transmission system and a soot blowing pipe component. The air inlet systems are mounted at two ends of the soot blowing pipe component, and each air inlet system comprises an electromagnetic valve, an air inlet pipe and an air inlet chamber. The soot blowing pipe component comprises an outer soot blowing pipe, an inner soot blowing pipe, a soot blowing nozzle, pressing plates and sealing mechanisms, the outer soot blowing pipe and the inner soot blowing pipe are coaxially arranged, the pressing plates are arranged at two ends of the inner soot blowing pipe, and an air inlet hole is formed in the center of each pressing plate. Two ends of the outer soot blowing pipe are movably connected with the inner soot blowing pipe, and the soot blowing nozzle is mounted on the inner soot blowing pipe; an elongated hole is formed in the position, corresponding to the soot blowing nozzle, on the outer soot blowing pipe; the soot blowing nozzle penetrates out from the elongated hole to be exposed outside the outer soot blowing pipes, two ends of the outer soot blowing pipe are connected with the air inlet chamber, and the air inlet pipe, the air inlet chamber, the air inlet holes in the pressing plates, the inner soot blowing pipe and the outer soot blowing pipe are communicated in sequence to form an air passage. A soot blowing area of the soot blowing nozzle is enlarged, soot blowing dead space is eliminated, and soot blowing effect is improved.

Description

technical field [0001] The invention relates to a retractable soot blower used in tubular heating furnaces in petroleum refining and petrochemical fields. Background technique [0002] With the change of crude oil properties and the increase of sulfur content, the problem of ash deposition and scaling on the heating surface of the convection section of the heating furnace in domestic petrochemical enterprises is becoming more and more serious. Once the heating surface accumulates dust, it will seriously affect the heat transfer effect of the heating surface. In the case of serious ash in the convective area, the heat transfer capacity will be reduced by about 30% to 50%, which will reduce the thermal efficiency of the heating furnace by more than 5%, and the fuel energy consumption of the heating furnace accounts for 30% to 40% of the total energy consumption of the refinery. %, so the dust accumulation in the convection section of the domestic petrochemical heating furnace...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the technical problems that the existing sootblowers have relatively fixed sootblowing points, dead angles in the sootblowing area, and poor sootblowing effect.

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