Novel anti-scum slag hopper of large-sized coal-fired power plant slag-tap boiler

Abstract

The invention discloses a novel anti-scum slag hopper of a large-sized coal-fired power plant slag-tap boiler. The novel anti-scum slag hopper of the large-sized coal-fired power plant slag-tap boilercomprises a slag hopper body; a common castable heat insulation layer is arranged on the internal wall of the slag hopper body; a corundum heat insulation layer is arranged on the external wall of one side of the common castable heat insulation layer; a waste gas pipe is arranged on the external wall of one side of the slag hopper body; an inclined mounting opening is formed in the external wallof one side of the slag hopper body; a slag pond monitoring system is fixedly connected to the internal wall of the mounting opening; a granulated water nozzle is formed in the internal wall of the slag hopper body; a slag cleaning access door is formed in the external wall of one side of the slag hopper body; and the slag pond monitoring system comprises a mobile guide rail. According to the novel anti-scum slag hopper of the large-sized coal-fired power plant slag-tap boiler, by preventing air leakage and heat insulation to increase the temperature of the slag hopper, the granulating effectof a high temperature slag liquid is enhanced, and a situation that the slag liquid is solidified to cause scum collection and even scum blockage due to slag chamber temperature reduction is prevented. Meanwhile, by additionally arranging the slag pond monitoring system and the slag cleaning access door, the monitoring ability and processing ability of the machine unit in responding to scum and slag blockage situations are improved.

Description

technical field [0001] The invention relates to the technical field of liquid slag discharge boilers in coal-fired power plants, in particular to a novel anti-scum hopper for liquid slag discharge boilers in large coal-fired power plants. Background technique [0002] Large-scale coal-fired power plant liquid slag boilers use high furnace temperature to melt ash into a fluid form, and capture the ash in the flue gas through the slag screen, so that most of the ash will form a molten slag that passes through the bottom of the furnace The slag flow mouth falls into the slag pool, so as to achieve the purpose of reducing the volume and volume of the ash and slag. However, due to the liquid slag discharge characteristics of the liquid slag discharge boiler, when the high-temperature slag liquid enters the slag tank, as the slag liquid cools and the slag tank cooling water vaporizes, it is easy to form scum on the water surface of the slag tank. It hinders the slag liquid from f...

AI Technical Summary

Problems solved by technology

However, due to the liquid slag discharge characteristics of the liquid slag discharge boiler, when the high-temperature slag liquid enters the slag tank, as the slag liquid cools and the slag tank cooling water vaporizes, it is easy to form scum on the water surface of the slag tank. It hinders the slag liquid from falling smoothly into the slag pool, and finally blocks the slag hopper, which seriously affects the safe operation of the boiler. This has become an urgent problem to be solved for large coal-fired power plant liquid slag discharge boilers

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