Combined rake type soot blower and control method

Abstract

The invention discloses a combined rake type soot blower and a control method, and relates to the technical field of waste gas treatment. The problems that resources are wasted and operation is unstable due to the fact that the opening and closing state of a lifting valve of a rake type soot blower is achieved through mechanical impact are solved. The soot blower comprises a first air cylinder arranged at one end of a rack and used for enabling compressed air to enter an inner pipe when a lifting valve is opened, a second air cylinder, a running vehicle and a PLC. The inner pipe is arranged at one side of the rack, and the other end of the inner pipe extends into an outer pipe; and the second air cylinder is connected with two clamping grooves and used for driving the two clamping grooves to be opened and closed in a sealed manner. The running vehicle is hung below the rack through rollers; the PLC sends opening signals to the second air cylinder, the first air cylinder, the lifting valve and the running vehicle in sequence, so that in the process that the second air cylinder drives the two clamping grooves to be opened, the lifting valve is driven by the first air cylinder to fill the compressed air into the inner pipe; and when the two clamping grooves are in an open state, the running vehicle drives the outer pipe to move back and forth along the inner pipe and sprays the compressed air.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, and more specifically relates to a combined rake type soot blower and a control method. Background technique [0002] As the core component of cement SCR denitrification, the rake soot blower directly affects the service efficiency and life of the catalyst, and may even cause the catalyst to be blocked due to poor soot blowing effect, resulting in the shutdown of the entire cement production line. The rake sootblower products currently on the market are transplanted from the supporting boilers in the power industry and SCR denitrification, so there are certain disadvantages in the use of the process characteristics and flue gas properties of the cement industry. [0003] In practical application, because the air supply of the compressed air poppet valve of the rake sootblower is realized by mechanical impact, it is impossible to realize the reasonable utilization and free adjustment c...

AI Technical Summary

Problems solved by technology

[0003] In practical application, because the air supply of the compressed air poppet valve of the rake sootblower is realized by mechanical impact, it is impossible to realize the reasonable utilization and free adjustment control of the compressed air during the blowing process, resulting in waste of resources; the mechanical switch has no signal transmission and cannot The realization of remote fault alarm brings inconvenience to daily maintenance and repair. The sports car can only hit the crank connecting rod mechanism to open the poppet valve after it moves. There is always an idle stroke, which leads to the failure of some catalysts to be injected and affects the denitrification efficiency.

[0004] To sum up, the existing rake sootblowers rely on mechanical impact to realize the switch state of the poppet valve, which has the problems of waste of resources and unstable operation.

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