Cupola Furnace

a) Melting system 
Raw materials are melting in cupola furnace with water cooling system. Lava flows out

Cupola Furnace

a)       Melting system

Raw materials are melting in cupola furnace with water cooling system. Lava flows out from the side hole at lower part of cupola furnace, and then lava flows through fix launder, and flows into movable launder and falls on centrifuge. Lava will be fiberized under the centrifugal force produced by centrifuge rotating at high speed and high speed air flow from air ring. There is level controller installed at the top of cupola furnace, it can keep the cupola furnace material in level and control the temperature of waste gas in steady. The composition of waste gas contains: CO2, CO, SO2 and dust.

For controlling the contamination, saving energy and increasing the melting temperature and promote the stability of lava, the cupola furnace needs to be installed with waste gas burning and preheating system of combustion support air of cupola furnace, as dust remover, waste gas burning furnace and heat exchanger. This system will separate the dust out from waste gas and burns the harm composition as CO and H2S, and then the air will be released into atmosphere. In order to make full use of energy, the high temperature waste will be intook into heat exchanger to preheat the combustion support air which will be blown into cupola furnace to assist burning.

i.      Furnace frame (Three layers of platform) 1 unit

Use heavy steel which is firm and wear well. With repairing platform of centrifuge, it facilitates producing, repairing and centralizing control.

ii.      Cupola furnace 1unit

Adopt new melting furnace which saves energy. The melting process is steady. And it can produce continuously. Also its repairing cost is low. This melting system is equipped with waste gas burning furnace and heat exchanger. The waste gas produced when melting will be through dust removing, waste gas burning and heat exchanging process, so the content of dust and CO will be reduced greatly to protect environment.

iii.      Cupola furnace material level control system 1set

iv.      Dust catcher  1 unit

We use dust remover in vortex type which is used to remove the dust. This dust remover can reduce the dust granule released from melting furnace effectively.

v.      Waste gas burning furnace   Autoignition    1 unit

Waste gas through dust removing, and then go into burning furnace which will burn the CO contained in waste gas by natural gas or oil. This system, firstly, it reduces the contamination to air, secondly, it increases the temperature of waste gas and supplies the heat energy for heat exchanger.

vi.      Waste gas intake pipeline        1set  Inc. valve

vii.      Waste gas intake fan 1set  Heat resisting fan

viii.      Heat exchanger  1unit

The heat exchanger is the place where the waste gas with high temperature exchanges heat energy with clean air. The waste gas released from melting furnace will be burnt in the burning furnace and then flows into heat exchanger. So the waste gas will exchanges heat energy with the clean air led in to the heat exchanger by fan. And then the clean air with high temperature will be lead into the melting furnace.

ix.      Control cabinet 1set

x.      Cooling system of cupola furnace (Inc. the pipeline and valves) 1set

xi.      Air supply fan of cupola furnace(Inc. valves) 1 unit

Type: 9-26-7.1C

Air supply pipeline of cupola furnace 1set
 

Model(mm)	QM0.8	QM1.0	QM1.2	QM1.5	QM1.6	QM1.8	QM2.0	QM2.4	QM2.6	QM3.0	QM3.2
Chamber diameter(m)	800	1000	1200	1500	1600	1800	2000	2400	2600	3000	3200
Hearth active surface	0.5	0.785	1.13	1.77	2.01	2.54	3.14	4.52	5.31	7.07	8.03
Suirable fuel	weak coherent gas carbon,anotherracite,burnt carbon
Fuel granularity(mm)	25-80
Fuel consumption quantitykg/h	40-100	70-140	120-190	160-350	350-460	500-600	500-720	700-1040	850-1200	1700-2000	1800-2200
Gasifying agent	Air ,steam Coal gasification is the process of producing coal gas, a type of syngas-a mixture of carbon monoxide (CO), hydrogen (H2), carbon dioxide (CO2) and water vapour (H2O)-from coal and water. Coal gas, which is a combustible gas, was traditionally used as a source of energy for municipal lighting and heat before the advent of industrial-scale production of natural gas, while the hydrogen obtained from gasification can be used for various purposes such as making ammonia, powering a hydrogen economy, or upgrading fossil fuels
Gas yieldNm³/h)	140-350	245-490	420-670	560-1200	1200-1600	1500-2100	1750-2500	2500-3600	3000-4300	6000-7000	6500-7500
Gas calorific valu(Kj/Nm³	5020-5670				5020-6000
Water jacket heating area()	4.02	5.02	6.78	10.37	11.06	12.44	17.58	21.87	23.69	30.16	38.4
Steam output (kg/h)	60	80	130	200	220	260	350	420	600	840	880
Gas outlet temperature()	(400-500)Plants related with the coal					(400-500)Plants related with the coal
Gas outlet pressure(Pa)	1000					980-1470			1470-1960
Gas exportation diameter(mm)	219	325	325	426	426	529	630	720	820	1020	1050
Air pressure(Pa)	3000					4000					4000
Saturated air temperature()	50-60					50-65
Ashpan rotational speed(r/h)	0.177-1.77
Equipment gross weight(t)	3.5	4.5	5	7.5	10	20	23.4	29.8	32	37.6	43.6
Motor power (kw)	6	6	6	7	8	10	14	20	20	27	32

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