Horizontal type double-flue industrial coal powder boiler

Abstract

The invention relates to an industrial coal powder boiler which is characterized by comprising a transversely arranged cylindrical boiler casing, wherein a front end plate and a back end plate are respectively arranged at the front part and the rear part in the boiler casing; two precombustion chambers abreast and axially penetrate the middle part of the front end plate, the outlet ends of the two precombustion chambers are respectively communicated with ends of two horizontal boiler flues abreast and transversely arranged in the boiler casing and other ends of the two boiler flues are respectively communicated with the back end plate; a front smokebox is formed between the front end of the boiler casing and the front end plate, the rear end of the boiler casing and the back end plate are divided into an upper part and a lower part through a partition board and a rear smokebox and a smoke collection chamber are respectively formed at the lower part and the upper part; a water wall circuit is vertically arranged in the rear smokebox and a chimney is communicated at the top of the smoke collection chamber; and a group of two-pass smoke pipes communicated with the front smokebox and the rear smokebox is axially arranged at the lower parts in the middles of the two boiler flues and a group of three-pass smoke pipes communicated with the front smokebox and the smoke collection chamber is axially arranged at the upper parts of the two boiler flues. The invention can be widely used in any situation where the small and medium-sized industrial coal powder boilers are required.

Description

technical field [0001] The invention relates to an industrial boiler, in particular to a horizontal industrial pulverized coal boiler with double furnaces. Background technique [0002] At present, traditional industrial coal-fired boilers are generally divided into layer-fired furnaces, chamber-fired furnaces and fluidized fluidized furnaces, among which layer-fired furnaces (including reciprocating furnaces, chain furnaces, etc.) are the most widely used. These boilers generally use raw coal in the form of lump coal and mixed coal as fuel, and cannot directly use fine-grained coal powder as fuel, so the fuel combustion efficiency is low. At the same time, the existing structure of the large power plant pulverized coal boilers used in power plants cannot be directly applied to small and medium-sized industrial pulverized coal boilers due to the different requirements on the scale of use. However, general oil-fired and gas-fired shell boilers have different structures and d...

AI Technical Summary

Problems solved by technology

These boilers generally use raw coal in the form of lump coal and mixed coal as fuel, and cannot directly use fine-grained coal powder as fuel, so the fuel combustion efficiency is low

At the same time, due to the different requirements for the scale of use of large-scale power plant pulverized coal boilers used in power plants, their existing structural forms cannot be directly applied to small and medium-sized industrial pulverized coal boilers.

However, general oil and gas shell boilers use different fuels, and their structures and delivery methods are also different. Therefore, fuel oil and gas boilers cannot be directly used as fine-grained pulverized coal boilers.

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