Environment-friendly energy-saving type chain-grate boiler

Abstract

The invention discloses an environment-friendly energy-saving type chain-grate boiler. The environment-friendly energy-saving type chain-grate boiler comprises a pulverized coal grinding machine and a chain-grate boiler body. The pulverized coal grinding machine is provided with an air conveying device. The chain-grate boiler body is provided with a tail gas output pipe. A tail gas recycling pipe is arranged between the tail gas output pipe and the pulverized coal grinding machine. One end of air inlet pipe communicates with the tail gas output pipe from the side wall of the tail gas output pipe, and the other end of the air inlet pipe communicates with an inner cavity of a grinding assembly of the pulverized coal grinding machine. The further improvement is that the environment-friendly energy-saving type chain-grate boiler further comprises an electrical control assembly; a temperature sensor is arranged in the chain-grate boiler; the tail gas output pipe and the air inlet pipe are provided with electromagnetic distribution valves; an electromagnetic adjusting valve is arranged in the air inlet pipe; and the temperature sensor, the electromagnetic distribution valves and the electromagnetic adjusting valve are electrically connected with the electrical control assembly. Through intelligent control, recycling of tail gas is achieved, lots of heat in the tail gas is recycled, and emission is reduced.

Description

technical field [0001] The invention relates to the field of coal-fired boilers, in particular to a chain boiler. Background technique [0002] At present, coal-fired boilers are the main boilers used in the production of small and medium-sized enterprises in my country and in urban central heating, most of which are chain boilers. In order to improve combustion efficiency, the existing chain boilers are generally equipped with pulverized coal grinders to grind coal into pulverized coal. Finally, the pulverized coal is atomized through the pulverized coal delivery pipeline and then input into the furnace of the chain boiler. The existing chain boilers have the following defects: one is that the tail gas is directly discharged through the tail gas output pipe, which not only pollutes the environment relatively large, but also loses a lot of heat in the tail gas; At the same time, air is input, which increases the oxygen input in the furnace, causing excess oxygen and affectin...

AI Technical Summary

Problems solved by technology

The existing chain boilers have the following defects: one is that the tail gas is directly discharged through the tail gas output pipe, which not only pollutes the environment relatively large, but also loses a lot of heat in the tail gas; At the same time, air is input, which increases the oxygen input in the furnace, resulting in excess oxygen, which affects the combustion of the chain boiler

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