Coal fired boiler novel combustion system

A combustion system and coal-fired boiler technology, applied in combustion methods, combustion equipment, combustion technology mitigation and other directions, can solve the problems of insufficient boiler combustion, waste of resources, large power consumption of fans, etc., to save energy, reduce emissions, ensure full burn effect

Inactive Publication Date: 2020-10-16
王苗苗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of insufficient boiler combustion in the prior art and the wa

Method used

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  • Coal fired boiler novel combustion system
  • Coal fired boiler novel combustion system
  • Coal fired boiler novel combustion system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1, taking a 40T coal-fired boiler as an example, when the boiler produces the same amount of water vapor, the comparison results of the relevant parameters of the new combustion system of the coal-fired boiler and the relevant parameters of the existing combustion system are shown in Table 1 :

[0036] Table 1

[0037]

[0038]

[0039] Change the blower 7 from two or more to one, the power of the blower 7 from 110kW to 22kW, and the flow of the blower 7 from 47000 to 83000m 3 / h is changed to 7700~9500m 3 / h; the pressure of the blower 7 is changed from the original low pressure 4200~2900Kpa to the high pressure 7300~6600Kpa.

[0040] The motor power of the induced draft fan 9 is changed from the original 335KW to 37KW; the flow rate of the induced draft fan 9 is changed from the original 73000 to 174000m 3 / h is changed to 13000~17000m 3 / h. The oxygen content in the combustion zone of the boiler 1 is increased by using water vapor with oxygen molec...

Embodiment 2

[0041] Example 2, taking a 12T coal-fired boiler as an example, when the boiler produces the same amount of water vapor, the comparison results of the relevant parameters of the new combustion system of the coal-fired boiler and the relevant parameters of the existing combustion system are shown in Table 2 :

[0042] Table 2

[0043] Combustion system related parameters existing combustion system this invention Coal seam thickness 14-16 cm about 9 cm Feeding frequency 40-50Hz 35-45Hz Blower power 37-45kW 5.5kW Induced fan power 90-110kW 11kW

Embodiment 3

[0044] Example 3, taking a 20T coal-fired boiler as an example, when the boiler produces the same amount of water vapor, the comparison results of the relevant parameters of the coal-fired boiler using the new combustion system and the relevant parameters of the existing combustion system are shown in Table 3 :

[0045] table 3

[0046] Combustion system related parameters existing combustion system this invention Coal seam thickness 16-19 cm about 11 cm Feeding frequency 40-50Hz 35-45Hz Blower power 55kW-70kW 7.5kW Induced fan power 120-150kW 20kW

[0047] The flue gas treatment device 8 includes a connected denitration device 8-1, a deammonization device 8-2, a wet electrostatic precipitator 8-3 and a denitrification device 8-4. The flue gas treatment device 8 also includes a desulfurizer and the like.

[0048] The steam generator 5 is connected with an automatic water supply device 6 .

[0049]The steam generator 5 is...

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Abstract

The invention relates to a coal fired boiler novel combustion system. The coal fired boiler novel combustion system comprises a boiler and further comprises a steam outlet pipe and a flue which are connected with the boiler. The flue is connected with a chimney, and a pipeline between the flue and the chimney is provided with a hot air generator, a water steam generator, an air blower, a smoke treatment device and an induced draft fan. The hot air generator is connected with the air blower and an air inlet pipe of the boiler. The water steam generator is connected with the air inlet pipe of the boiler. The pipeline between the flue and the chimney is provided with the water steam generator, waste heat of smoke is utilized for converting water into the steam state from the liquid state, thewater steam is connected with the air inlet pipe of the boiler, and accordingly, the content of water steam in the boiler is increased. The water steam is used for adsorbing oxygen molecules in air,the oxygen content in the boiler is increased, sufficient combustion of fuel is guaranteed, accordingly, the oxygen content in smoke is reduced, and energy is saved; and waste heat of the smoke is utilized for heating air entering the boiler, and heat consumption of the boiler is reduced.

Description

technical field [0001] The invention relates to the technical field of industrial boilers, in particular to a novel combustion system of a coal-fired boiler. Background technique [0002] The main working principle of the boiler is a thermal device that uses the heat energy released after fuel combustion or the waste heat in industrial production to transfer to the water in the container to make the water reach the required temperature or steam at a certain pressure. [0003] The combustion condition of the boiler has an important impact on the thermal economy, safety and environmental protection of the whole system. If the combustion condition is poor, the efficiency of the boiler will be low. At the same time, the fly ash contains high carbon and oxygen content, which will aggravate the wear and tear of the heating surfaces of the furnace. The mechanical wear of the SCR catalyst, and the high-carbon combustibles adhering to the SCR catalyst, the corrugated plate of the air...

Claims

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Application Information

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IPC IPC(8): F23L7/00F22B1/18F23J15/02F23J15/06F23J15/04B01D53/50B01D53/60
CPCB01D53/50B01D53/60F22B1/18F23J15/02F23J15/04F23J15/06F23J2215/10F23J2215/20F23L7/005Y02E20/30
Inventor 王苗苗王昕王皓堃王浩晨王芝岭王济塘
Owner 王苗苗
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