An online soot blowing device for a sintered vertical cooling waste heat boiler

Abstract

The invention relates to an online soot blowing device for a sintered vertical cooling waste heat boiler. The soot blowing device includes a waste heat boiler, a steam drum, a vertical cooling furnace, an induced draft fan, and a purge assembly. The waste heat boiler adopts a vertical arrangement, and the steam drum is installed on The top of the waste heat boiler is arranged on the boiler support near the vertical cooling furnace. The purging assembly includes three purging devices, namely a high temperature purging device, a low temperature purging device and an economizer purging device. There are high-temperature evaporators, low-temperature evaporators and economizer evaporators, and a desuperheating water tank is arranged on the bottom side of the waste heat boiler. An outlet pump is installed at the outlet of the desuperheating water tank, and three sets of corresponding temperature adjustments are installed at the outlet of the outlet pump. components. This solution can automatically adjust the purging direction of the purging device, and has its own temperature measuring device. By adding an endoscope, it can realize functions such as online monitoring of dust accumulation status and purging effect.

Description

technical field [0001] The invention relates to a soot blowing device, in particular to an online soot blowing device for a sintering vertical cooling waste heat boiler, which belongs to the technical field of sintering waste heat power generation devices. Background technique [0002] At present, the vast majority of domestic sintering waste heat power generation systems are pure low-temperature waste heat power generation systems. In this system, the hot air taken from the front of the cooling section of the ring cooler passes through the dust removal equipment and enters the waste heat boiler, and then exchanges with the waste heat boiler feed water. Heat, so as to produce superheated steam, and the superheated steam enters the turbo generator through the pipe network to generate power and generate economic benefits. [0003] The high-temperature flue gas produced by the sintering vertical cooling furnace at 450°C is dedusted once and then enters the high-temperature evap...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of using industrial compressed air for purging are: because the temperature of the compressed air before entering the waste heat boiler is normal temperature, the temperature of the boiler’s high-pressure and low-pressure heating surfaces exceeds 100°C, and the temperature of the high-temperature evaporator is higher at about 400°C. Compressed air at normal temperature, Or compressed air with water directly enters the high-temperature heating surface for purging, (relative heat and cold exchange) will cause great equipment damage to the heating surface of the evaporator, seriously affect the service life of the waste heat boiler, affect the evaporation heat transfer efficiency of the boiler, and affect the steam quality

Conventional locking sound wave rapping and compressed air blowing have poor blowing effect on the evaporation heating surface of the waste heat boiler, the pressure is not enough, the blowing effect is not known, and the blowing situation cannot be seen intuitively; therefore, a new one is urgently needed Solution to the technical problem

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