Automatic helical feeding combustion boiler

An automatic feeding and boiler technology, applied in the field of boilers, can solve the problems of black smoke from the chimney, insufficient combustion of the coal seam, high slag temperature, etc., and achieve the effect of saving maintenance costs, considerable economic benefits, and improving economic benefits

Inactive Publication Date: 2011-05-18
何忠海
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chain furnace is the process of transporting coal from the low-temperature area to the high-temperature area with the movement of the grate until it is burned. Since the continuous transmission distance of the chain grate is relatively long, it slowly rises from the low temperature and actually starts from the initial temperature. This process The middle grate needs to absorb heat again, so that the temperature of the entire furnace is reduced (about 100-150°C), and the coal seam cannot be fully burned, and a large amount of volatile matter is precipitated and cannot be fully burned, forming chemical incomplete combustion. Heat loss and black smoke from the chimney are unavoidable disadvantages of the chain furnace
The carbon content of the slag is as high as 50% or more. With the transmission of the grate, the temperature of the slag is high. Therefore, the whole process leads to incomplete combustion of fuel and serious heat loss in exhaust smoke.

Method used

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  • Automatic helical feeding combustion boiler
  • Automatic helical feeding combustion boiler
  • Automatic helical feeding combustion boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, with reference to attached Figure 1 to Figure 10 , the fuel for the boiler (usually small granular briquettes and biomass particles) is sent into the furnace through the screw rod in front of the furnace, and the motor on the grate is controlled by frequency conversion, which can control the speed and amount of feed in time. We pass Adjust the air supply at the bottom of the grate so that the fuel can be fully ignited and burned in the furnace. Sensible heat and intermediate products such as H2, CH4, CnHm, Co and other combustible components are produced during this process; the air is blown through the bottom of the grate and directly enters the high-temperature combustion chamber for complete combustion and releases heat.

[0027] The combustion principle is divided into the following stages:

[0028] 1. Dehydration: The moisture in the fuel evaporates and gasifies when heated, and escapes from the fuel.

[0029] 2. Precipitation and combustion of vol...

Embodiment 2

[0034] Embodiment 2, with reference to attached Figure 1 to Figure 10, when the spiral automatic feeding boiler of the present invention is applied to a vertical boiler, the discharge port of the screw propeller (16) is directly facing the boiler inlet, and the combustion chamber (6) of the boiler does not need to extend the plate (13), and the corners do not Build inclined plane (4), screw propeller (16) outer end connects electric motor (15), and the top surface of screw propeller (16) is feeding device (14), and the structure at this moment is that grate (9) face is Fuel, above the fuel is a combustion chamber (6), above the combustion chamber (6) are a furnace and a fire pipe, the fire pipe is connected to the water tank, and the water pipe is connected to a steam outlet and a hot water outlet. Coal, firewood, orange stalks are used to make granules for combustion. The fuel burns in the combustion chamber (6) almost in a static state, and the remaining small amount of as...

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Abstract

The invention discloses an automatic helical feeding combustion boiler which comprises a boiler body and a boiler wall. The automatic helical feeding combustion boiler is characterized in that a helical propeller is arranged at a boiler feeding hole, the outer end of the helical propeller is connected with a motor and a feeding device, the feeding device is arranged on the top surface of the helical propeller, the inner end of the helical propeller is arranged at a combustion chamber feeding hole, the bottom surface of a combustion chamber is provided with a fire grate, and fuel is arranged on the top surface of the fire grate. The invention has the advantages that the fuel directly combusts on the fire grate and stays for a long time, thus the ventilating combustion-supporting effect is good, the fuel is saved, boiled water and steam are rapidly obtained, and the temperature of a hearth reaches above 1150 DEG C; and the heat efficiency is high, emission of smoke, harmful gases SO2, NOx and the like is reduced, and various indexes and energy-saving indexes are greatly superior to the standard specified in China.

Description

technical field [0001] The invention relates to a boiler, in particular to a spiral automatic feeding combustion boiler. Background technique [0002] Most of the existing boilers are chain furnaces, and the important factors affecting the thermal efficiency of boilers are incomplete combustion of fuel and heat loss of exhaust smoke. This type of furnace is fed from the front of the furnace with a lower temperature. The chain furnace is the process of transporting coal from the low-temperature area to the high-temperature area with the movement of the grate until it is burned. Since the continuous transmission distance of the chain grate is relatively long, it slowly rises from the low temperature and actually starts from the initial temperature. This process The middle grate needs to absorb heat again, so that the temperature of the entire furnace is reduced (about 100-150°C), and the coal seam cannot be fully burned, and a large amount of volatile matter is precipitated a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23B40/00
Inventor 何忠海
Owner 何忠海
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