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Pulverized coal boiler

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Overview
Benefit
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Overview

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Pulverized coal boiler use pulverized coal as fuel. The coal powder will be fed into fire chamber with air, and burning in suspended state. Except the very poor quality coal, most of other coal could be burned completely in this boiler, combustion efficiency could achieve to 88~93%. Most of large coal fired boiler for power plant adopts this kind combustion mode, it also suit for big capacity (≥35t/h) industrial used boiler.

Construction

Pulverized coal boiler is made up by fire chamber, burner and ignite device, etc. Coal powder is fed to fire chamber by primary fan, air will be fed by secondary fan. After be preheated, dried, volatile de-volatilization, it will be ignited close to burner’s outlet and burning. Some of the bigger ash will fall in to the ash bucket, most small ash will be taken by flue gas. This kind boiler must assemble high efficiency dust collector.

Benefit

1. Friendly working environment: whole system is closed running, automatic coaling, centralized ash discharge, without dust spilling

2. Easy to start and shut down: boiler could be started and shut down quickly. It needs only 30 seconds to achieve normal running condition, and then cut off the incendiary source. If need to shut down the boiler, just stop feeding the pulverized coal.

3. High monitoring level: monitor and adjust working data automatically to make whole system in best running condition. Mean while, reduce the running risk by human factor.

4. High efficiency and saving energy: pulverized coal could be combusted completely. Boiler has great heating exchange effect, small air excess coefficient and higher heating efficiency. For big power equipments’ frequency converter, the energy saving effect is much clearer.

5. Clean emission: boiler could process desulphurization in furnace. Burner use low temperature air grade design, burning temperature field is uniform to avoid parts temperature is high, which make the content of SO2 and NOx is lower in the process. Reduce dust concentration of the exhaust by bag filter. The collected ash will be discharged from a closed system, no secondary pollution.

6. Optimal land utilization: no need storage yard for coal and ash. Saving land and investment.

Specifications

Boiler model		WNS2-1.25-AIII	WNS4-2.5-AIII	WNS6-1.25-AIII	WNS10-1.25-AIII	SZS2-1.25-AIII	SZS4-2.5-AIII	SZS6-1.25-AIII	SZS8-1.25-AIII	SZS10-1.6-AIII	SHS20-1.25-AIII
Rated steam capacity	t/h	2	4	6	10	2	4	6	8	10	20
Rated working pressure	Mpa	1.25	2.5	1.25	1.25	1.25	2.5	1.25	1.25	1.25	1.25
Rated steam temperature	℃	194	223	194	194	194	223	194	194	194	194
Rated feed water temperature	℃	20	20	105	105	20	20	105	105	105	105
Combustion type	/	Chamber combustion
Heating efficiency	%	≥87
Fuel consumption	kg/h	236	475	615	1005	236	475	615	815	1015	2030
Shipping weight of the biggest part	t	11	27	39	45	17	27	39	42	48	In bulk
Shipping dimension of the biggest part	mm	5865x 2894 x3426	5860x 3060 x3525	8865x 2894 x3426	11400x 3230 x3700	5865x 2894 x3426	63700x 3060 x3525	8290x 3080 x3514	8790x 3200 x3576	9560x 3580 x3580	10100x 4850 x4825

Note:
The fuel consumption is calculated as Qdw=26.3MJ/Kg (6300kcal/kg)
This form is only for your reference, please ask the latest data if you need.

Hot water boiler

Boiler model		WNS1.4 -0.7/95 /70-AIII	WNS2.8 -0.7/95 /70-AIII	WNS4.2 -0.7/95 /70-AIII	WNS7.0 -1.0/115 /70-AIII	SZS1.4 -0.7/95 /70-AIII	SZS2.8 -0.7/95 /70-AIII	SZS4.2 -0.7/95 /70-AIII	SZS5.6 -0.7/95 /70-AIII	SZS7.0 -1.0/115 /70-AIII	SZS14 -1.25/130 /70-AIII
Rated thermal power	MW	1.4	2.8	4.2	7.0	1.4	2.8	4.2	5.6	7.0	14
Rated working pressure	Mpa	0.7	0.7	0.7	1.0	0.7	0.7	0.7	0.7	1.0	1.25
Rated water output temperature	℃	95	95	95	115	95	95	95	95	115	130
Rated feed water temperature	℃	70	70	70	70	70	70	70	70	70	70
Combustion type	/	Chamber combustion
Heating efficiency	%	≥87
Fuel consumption	kg/h	220	440	660	1080	220	440	660	880	1085	2172
Shipping weight of the biggest part	t	10	23	37	43	15	23	37	40	43	In bulk
Shipping dimension of the biggest part	mm	5620x 2100 x2450	7430x 2540 x3080	8410x 2880 x3322	11416x 3230 x3682	5620x 2890 x3470	6330x 3060 x3525	8290x 3080 x3510	8790x 3200 x3572	9544x 3580 x3572	10080x 4850 x4825

Note:
The fuel consumption is calculated as Qdw=26.3MJ/Kg (6300kcal/kg)
This form is only for your reference, please ask the latest data if you need.

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