Horizontal dual-drum energy-efficient boiler without fireproofing-material furnace-building process

Abstract

The invention discloses a horizontal dual-drum energy-efficient boiler without a fireproofing-material furnace-building process. The horizontal dual-drum energy-efficient boiler comprises an upper drum, a lower drum and a hearth, wherein the upper drum is connected the lower drum through a plurality of rows of convection pipe bundles, all an outer partition wall, a middle partition wall and an inner partition wall are in water pipe type structures, and fins and/or cast iron hangers are assembled; the hearth is arranged on outside the inner partition wall, and is composed of an upper header, a lower header and a fire grate as well as an outer water pipe wall; a combustion chamber is arranged at the front part of the hearth, a high-temperature smoke chamber is arranged on the rear part of the hearth, a plurality of high-temperature water-passing pipes are vertically arranged in the high-temperature smoke chamber, and the high-temperature smoke chamber has a three-return stroke combustion structure; and a smoke outlet is sequentially connected with a hot air chamber and a chimney of a smoke residual heat recycling device, and a smoke purifying pond can be additionally arranged. Hot air of the hot air chamber is supplied to the hearth, high-temperature water of the smoke residual heat recycling device is replenished for the boiler, thus heat energy utilization rate can be greatly increased, steam yield is high and heat efficiency is high. The energy-efficient boiler has the advantages of light integral weight, convenience and time conservation in hoisting, transporting and installing, and cost conservation.

Description

technical field [0001] The invention relates to a boiler, in particular to a high-efficiency and energy-saving boiler built with horizontal double drums without refractory materials. Background technique [0002] Traditional boilers with fixed grate and manual fireman are all single-drum structures, and multiple walls are built with refractory bricks in the furnace to achieve the purpose of combustion. The method of laying refractory cement is used between the upper and lower rows of water-cooled wall tubes arranged outside the drum to form a secondary return channel. Then it enters the three-return smoke pipe through the front smoke box and is discharged. On the outside of the outer water-cooled wall pipe, a large number of refractory bricks are used to build an insulating wall, and then an insulating layer is filled outside the wall. Great waste. [0003] The backwardness of the boiler structure of the traditional manual fireman fixed grate is that in order to achieve ...

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Problems solved by technology

Great waste

[0003] The backwardness of the boiler structure of the traditional manual fireman fixed grate is that in order to achieve the designed output, a large number of heating surfaces must be arranged, and the utilization rate of the heating surfaces is very low, accounting for only 60% of the arranged heating surfaces

[0004] The backwardness of the boiler structu

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