Coal-fired hot-blast stove capable of improving combustion rate

Abstract

The invention relates to a coal-fired hot-blast stove capable of improving the combustion rate. The coal-fired hot-blast stove comprises a stove body, wherein the upper portion of the stove body is connected with a heat exchange bin arranged on one side through a smoke exhaust pipe, and used for conducting heat exchange on cold air in a heat exchange pipe in the heat exchange bin; and the outer wall of the stove body is fixedly connected with a feeding hopper used for crushing coal briquettes into coal particles or pulverized coal. According to the coal-fired hot-blast stove, a crusher in thefeeding hopper rotates, rises and falls along a single-circle spiral net, a conical column at the upper half part of the crusher drives a blade to primarily process coal briquettes to cut the coal briquettes into coal briquettes of smaller sizes, and then heavy pressing is carried out on a leaking net by a pressing table at the lower half part of the crusher to press the coal briquettes into pulverized coal or coal particles meeting the specification, so that combustion is facilitated. An original feeding hopper of the coal-fired hot-blast stove is changed into a device for processing the coalbriquettes into the pulverized coal, so that the loss during pulverized coal transportation is avoided, the problem that the efficiency of directly burning the coal briquettes is low is solved, and the combustion rate of the hot-blast stove is improved.

Description

technical field [0001] The invention relates to the technical field of hot blast stoves, in particular to a coal-fired hot blast stove with improved combustion rate. Background technique [0002] There are many varieties and series of hot blast stoves. They are divided into two types: hand-fired and machine-fired by the way of adding coal; It is indirect type and direct type, and can be divided into combined type and split type according to the arrangement of heat exchangers, and coal pulverizers are equipped on large furnaces. Working principle: The coal-fired pulverizer is processed into pulverized coal or coal particles, sprayed into the combustion chamber, and fully burned in the combustion chamber through the air. The hot air after combustion passes through the heat exchanger to exchange the heat for fresh The cold air can make the fresh air temperature reach high temperature for heating and drying of materials. [0003] Some existing coal-fired hot blast stoves use c...

AI Technical Summary

Problems solved by technology

[0003] Some existing coal-fired hot blast stoves use coal to burn. Since the combustion efficiency of coal is lower than that of coal powder, the efficiency of this kind of hot blast stove that directly burns coal is lower than that of burning coal, but Pulverized coal is inconvenient to transport and is prone to large transport losses

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