Longitudinally arranged type back-burning energy-saving single-drum horizontal type boiler

Abstract

The invention discloses a longitudinally arranged type back-burning energy-saving single-drum horizontal type boiler. The boiler is provided with a boiler body, wherein the boiler body comprises an upper drum and a hearth; the upper drum is arranged on the top of the boiler body; two longitudinal collection boxes are arranged on the left side and the right side of the bottom of the boiler body; the upper drum is connected with the two longitudinal collection boxes through an outer pipe wall; a middle transverse collection box is arranged below the middle of the upper drum; the hearth is arranged between the middle transverse collection box and the front end of the boiler body; the hearth comprises an inner pipe wall, an upper fire grate and a lower fire grate which are arranged between the upper drum and the two longitudinal collection box; smoke passes through the upper hearth and the upper fire grate and reaches the lower hearth to form a smoke first returning channel; a smoke second returning channel is formed between the inner pipe wall and the outer pipe wall; and a plurality of heat exchange pipes are arranged between a front smoke chamber and a rear smoke chamber in the upper drum to form a smoke third returning channel. A back-burning mode of a multi-layer fire grate pipe structure is adopted; a fireproof material wall is not arranged in the hearth, so that the radiation heated surface arranged in the hearth space is used to the maximum extent; the weight of the boiler body is reduced; and the production efficiency is improved.

Description

technical field [0001] The invention relates to a boiler, in particular to a vertical reverse combustion energy-saving single-drum horizontal boiler. Background technique [0002] The traditional horizontal boiler has a large number of holes drilled on the front and rear tube sheets of the drum, and the tubes are passed through. The heating surface is arranged in the low temperature area, and the refractory mud structure of the front smoke box is placed outside the front. Its disadvantages are large steel consumption, large amount of refractory materials, large volume, heavy weight, large coal consumption, low thermal efficiency, and high transportation costs. Contents of the invention [0003] The technical problem to be solved in the present invention is to address the deficiencies of the prior art, and propose a vertical reverse-firing energy-saving single-drum horizontal boiler with small size, light weight, simplified production process and improved production efficie...

AI Technical Summary

Problems solved by technology

Its shortcomings are large steel consumption, large amount of refractory materials, large volume, heavy weight, large coal consumption, low thermal efficiency, and high transportation costs.

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