W-shaped boiler oil-saving and wind-resistant type bispin burner port ignition device

Abstract

The invention discloses a W-shaped boiler oil-saving and wind-resistant type bispin burner port ignition device. The W-shaped boiler oil-saving and wind-resistant type bispin burner port ignition device comprises two sets of symmetrically-arranged coal dust cyclone separators and two sets of symmetrically-arranged ignition spray guns. The bend end of each coal dust cyclone separator is provided with a hanging pipe extending to a coal dust nozzle. Each coal dust nozzle is provided with a despinning blade. Each despinning blade is installed at one end of the corresponding hanging pipe in a sleeving mode. The other end of each hanging pipe is provided with a hanging pipe adjusting wheel disc. Each hanging pipe is of a hollow tubular structure. The ignition spray guns are arranged in inner cavities of the hanging pipes in an embedded mode. Each ignition spray gun comprises a gun head and a gun body. Each gun head is provided with a bubble chamber and a nozzle located at the end of the bubble chamber. The tail end of each gun head is connected with the corresponding gun body through an oil-gas distributor. An inner pipe and an outer pipe which are isolated from each other are coaxially arranged in each gun body. Each inner pipe and the corresponding outer pipe are connected with an oil inlet and an atomization gas inlet correspondingly. According to the W-shaped boiler oil-saving and wind-resistant type bispin burner port ignition device, the oil guns are moved to the midpoints of the coal dust nozzles; oil gun flames fully cover coal dust airflow; the ignition effect of the oil flames on coal dust is very high; the oil-saving effect that less oil is burnt, and more coal dust is burnt can be achieved; and the oil-saving rate is 60% or above.

Description

technical field [0001] The invention relates to components on a W-type boiler, in particular to an oil-saving and wind-resistant double-rotary burner ignition device for a W-type boiler. Background technique [0002] W-type boilers generally use anthracite coal, which has very poor ignition performance and pulverized coal is not easy to ignite. This has led to the fact that the W-type boiler must burn a large amount of fuel oil during the start-up phase, most of which are expensive light diesel oil. After the furnace temperature is heated to a very high temperature, the pulverized coal can be ignited normally. A 600MW-class W-type boiler consumes about 120 tons of fuel for ignition, and the ignition cost is very high. Due to structural reasons, the existing oil guns of W-type boilers are arranged on the edge of the pulverized coal nozzle, and the distance from the pulverized coal nozzle is relatively long. The contact part between the flame of the oil gun and the pulverized...

AI Technical Summary

Problems solved by technology

Due to structural reasons, the existing oil guns of W-type boilers are arranged on the side of the pulverized coal nozzle, and the distance from the pulverized coal nozzle is relatively long. The contact part between the flame of the oil gun and the pulverized coal flow is less than 1 / 3. The ignition effect of the flame on the pulverized coal is not strong, which leads to the prominent problem of large fuel consumption for ignition of the W-type boiler.

Images