电窑炉与火焰窑炉的比较

Comparison of electric furnace and flame kiln

⑴从热工基本原理上比较

The comparison from the basic principle of thermal.

火焰窑炉需要燃料燃烧供热，所以需进行燃料燃烧计算和燃烧设备计算；燃料燃烧需要供给助燃空气、燃烧产物需要排出窑外，所以需计算窑内气体流量、流动阻力、各种压头的转变、计算通风设备等。电热窑炉一般是通过电热元件把电能转变成热能，要进行电热元件的选择、电热元件尺寸的计算、供电与控制设备的选择与计算；由于没有燃料燃烧的问题，所以不需考虑供给空气、排除燃烧产物等通风设备。在窑内传热方面，火焰窑炉主要是燃烧产物的气体辐射传热和强制对流传热，电热窑炉主要是电热体的固体辐射传热及自然对流传热，即这两类窑炉窑内主要传热的基本方式不同。但若要求在电热窑炉内强制冷却制品或排除制品在烧成过程中产生的气体以及要求维持窑内一定的压力制度时，则需要进行电热窑炉的通风设备的计算，窑内也存在着强制对流传热。

Flame furnace fuel combustion heating, so the need for the calculation and calculation of combustion equipment and combustion of fuel; fuel combustion to supply combustion air, combustion products need to be discharged outside the kiln, so need to calculate the kiln gas flow, flow resistance, pressure head transformation, calculation of ventilation equipment etc.. Electric heating furnace is generally through the electric heating element converts electrical energy into heat energy to electric heating element selection, element size calculation, power supply and control equipment selection and calculation of fuel burning; because there is no problem, so there is no need to c***ider the supply of air, excluding the combustion products and ventilation equipment. In the kiln heat, flame furnace is the main combustion product gas radiation heat transfer and forced convection heat transfer, electric furnace is mainly solid heat radiation and natural convection heat transfer of electric heater, which is the basic way of the two kinds of kiln in the main heat transfer of different. But if the requirements of the electric furnace cooling products or exclude products in the burning gas generated in the process and maintain the pressure inside the kiln system, calculation of ventilation equipment need heating kiln, the kiln has forced convection heat transfer.

⑵从结构与操作的主要优缺点上比较

The main advantages and disadvantages from the structure and operation comparison

电热窑炉不需要燃烧设备，一般不需要通风设备，结构简单，占地面积小，加热空间紧凑，空间热强度较高，热***，窑内制品不受烟气及灰渣等影响，温度便于实现***控制，故产品烧成质量好，窑内可在任何压力条件（高压或真空）或特殊气氛条件下加热制品，可以获得火焰窑炉难以达到的2000℃以上的高温。电热窑炉的断面尺寸不能太大，否则窑断面上温度分布比火焰窑炉更不均匀，故电热窑炉对烧成大件、厚壁等制品不利，产量也不大，电热窑炉附属电器设备比较复杂，电热元件消耗也多，电费较贵，而且有些电热元件要在一定的保护气氛下使用。

Electric heating furnace without burning equipment, do not need ventilation equipment, generally has the advantages of simple structure, small occupied area, heating space, space thermal high strength, high thermal efficiency, the kiln products from flue gas and ash and so on, to achieve precise control of temperature, so the product quality is good firing in the kiln, at any pressure conditi*** (high pressure or vacuum heating) products or special conditi***, can obtain high temperature flame furnace to achieve the above 2000 DEG C. Not electric furnace section size is too large, otherwise the kiln section temperature distribution more uneven than the flame furnace, the heating furnace of the firing of large, thick wall products such as negative, yield is not large, the electric furnace attached to electrical equipment complex, electric heating element c***umption, electricity is expensive, and some to use electric heating element in the protective atmosphere.

⑶从成本费用上比较

The comparison from the cost

一般来说，燃料窑炉的设备费和操作费用均较低；而电热窑炉的设备费和操作费用则较高。但就窑内气氛和温度控制来说，电窑则较为***。因此，非可控气氛的高温窑炉多为燃料窑，而且窑的容积越大，燃料窑炉占的比例就越多。体积小、售价高的陶瓷产品，如特种陶瓷或需要用可控气氛处理的制品，倾向于用电热窑炉。此外，电资源丰富的地区，电价便宜，也可考虑使用电热窑炉。

Generally speaking, the equipment and operating costs of the fuel furnace are relatively low, while the equipment and operating costs of the electric heating furnace are relatively high. But in the kiln atmosphere and temperature control, the electric furnace is more advantageous. Therefore, the non controllable atmosphere of high temperature furnace is mostly fuel furnace, and the larger the capacity of the kiln, the more proportion of the fuel furnace. Ceramic products with small size and high prices, such as special ceramics or products that need to be treated with controlled atmosphere, are inclined to use electric heating furnace. In addition, the electricity resource rich region, the price is cheap, but also c***ider the use of electric heating furnace.

宜兴市兴强炉业有限公司

Yixing City Hing strong furnace industry Co., Ltd.

***的窑炉制造公司

Professional kiln manufacturing company