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热风炉热工作原理?如何提高热风炉的工作效率?

2018-11-10 16:25:50 常州市星火铝艺制品有限公司 阅读

如何提高热风炉的工作效率?我们在日常使用热风炉过程中常常只是一味的按部就班操作,日积月累炉子的性能难免受到影响,那么热风炉热力工作到底都受和影响呢?如何才能更高的提高工作效率呢?做好下面几点会让大大提高热风炉的工作效率。

How to improve the efficiency of hot blast stove? In our daily use of hot blast stoves, we often just operate in accordance with the schedule, and the performance of the stoves is unavoidably affected over time. So how about the thermal work of hot blast stoves? How can we improve work efficiency? The following points will greatly improve the efficiency of the hot stove. 首先是煤炭的水分。煤炭的水分越高发热量越低,所以在使用燃煤热风炉过程当中,煤炭入炉前对煤粉要经过干燥处理,以减少水分对发电热风炉燃烧带来的影响。

First is the moisture content of coal. The higher the moisture content of coal, the lower the calorific value. Therefore, in the process of using coal-fired hot blast stove, the pulverized coal must be dried before entering the stove to reduce the influence of moisture on the combustion of power generation hot blast stove.

第二、煤炭的灰分。灰分高会使火焰传播速度减慢,燃点推迟,燃烧温度下降,燃烧稳定性变差,甚至造成灭火,同时灰分过高.还容易加剧设备的磨损,缩短设备使用寿命。因为一定要选用质量好的低灰分的煤炭作为燃料。

Second, the ash content of coal. The high ash content will slow down the flame propagation speed, delay the ignition point, decrease the combustion temperature, worsen the combustion stability, even cause fire extinguishing, at the same time, the high ash content will easily aggravate the wear and tear of the equipment and shorten the service life of the equipment. Because it is necessary to choose good quality low ash coal as fuel.

第三、煤炭的硫分。硫燃烧后生成S02和S03,他们极易与烟气中的水蒸气化合成酸性物质腐蚀设备,所以一定要选择低硫分的煤炭作为燃料使用。

Third, sulfur content of coal. Sulphur burns to produce S02 and S03, which are easy to corrode equipment by synthesizing acidic substances with water vaporization in flue gas. Therefore, coal with low sulphur content must be selected as fuel.

当然影响热风炉的因素很多,不止以上三点,但只要做好以上主要三点就可以大大提高热风炉的工作效率以及使用寿命。

Of course, there are many factors affecting the hot stove, not only the above three points, but as long as the above three main points are well done, the working efficiency and service life of the hot stove can be greatly improved.

热风炉热工作原理:

Hot working principle of hot blast stove:

1、直接式高净化热风炉

1, direct type high purification hot stove.

就是采用燃料直接燃烧,经高净化处理形成热风,而和物料直接接触加热干燥或烘烤。该种方法燃料的消耗量约比用蒸汽式或其他间接加热器减少一半左右。因此,在不影响烘干产品品质的情况下,完全可以使用直接式高净化热风。

It uses direct combustion of fuel to form hot air after high purity treatment, and directly contacts with materials to heat, dry or bake. The consumption of fuel by this method is about half as much as that of steam or other indirect heaters. Therefore, the direct type high purification hot air can be used without affecting the quality of the drying product.

燃料可分为:

Fuel can be divided into:

① 固体燃料,如煤、焦炭。

(1) solid fuels, such as coal and coke.

② 液体燃料,如柴油、重油

2. Liquid fuels, such as diesel oil and heavy oil.

③ 气体燃料,如煤气、天然气、液体气。

3. Gas fuels, such as gas, natural gas and liquid gas.

燃料经燃烧反应后得到的高温燃烧气体进一步与外界空气接触,混合到某一温度后直接进入干燥室或烘烤房,与被干燥物料相接触,加热、蒸发水分,从而获得干燥产品。为了利用这些燃料的燃烧反应热,必须增设一套燃料燃烧装置。如:燃煤燃烧器、燃油燃烧器、煤气烧嘴等。

The high-temperature combustion gases obtained by combustion reaction further contact with the outside air, mix to a certain temperature and then directly enter the drying chamber or baking room, contact with the dried materials, heat and evaporate water, so as to obtain the dried products. In order to make use of the combustion reaction heat of these fuels, a fuel burning device must be added. Such as: coal burner, fuel burner, gas burner and so on.

2、间接式热风炉

2. Indirect hot-air stove

主要适用于被干燥物料不允许被污染,或应用于温度较低的热敏性物料干燥。如:奶粉、制药、合成树脂、精细化工等。此种加热装置,即是将蒸气、导热油、烟道气等做载体,通过多种形式的热交换器来加热空气。

It is mainly suitable for drying materials which are not allowed to be polluted, or for drying heat sensitive materials with lower temperature. Such as: milk powder, pharmaceuticals, synthetic resins, fine chemicals, etc. The heating device uses steam, heat conducting oil and flue gas as carriers to heat air through various forms of heat exchangers.

间接式热风炉的最本质问题就是热交换。热交换面积越大,热转换率越高,热风炉的节能效果越好,炉体及换热器的寿命越长。反之,热交换面积的大小也可以从烟气温度上加以识别。烟温越低,热转换率越高,热交换面积就越大。

The most essential problem of indirect hot stove is heat exchange. The larger the heat exchange area, the higher the heat transfer rate, the better the energy saving effect of the hot blast stove, and the longer the life of the furnace body and heat exchanger. Conversely, the size of the heat exchange area can also be identified from the temperature of the flue gas. The lower the smoke temperature, the higher the heat transfer rate, the greater the heat exchange area.

来源:无锡海腾钢管 
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