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燃气热风炉的热度值重要吗?

2019-10-25 来源:http://www.dwurp.cn 发布人:admin 浏览量:
  在使用和操作煤气热风炉时,需要特别注意大量的数据。例如,燃烧热值就是其中之一。但是煤气炉的热值真的重要吗?它的主要功能是什么?下面可以跟着热风炉生产厂家小编一起看看这个问题的答案。
  When using and operating the gas stove, we need to pay special attention to a large number of data. For example, the calorific value of combustion is one of them. But is the calorific value of the gasifier really important? What is its main function? Let's follow Xiaobian to see the answer to this question.
  燃料的燃烧热可以用它的HHV(高热值)或LHV(低热值)来表示。高热值的燃烧热是产品的水蒸气凝结成液态后的燃烧热,加上水的凝结潜热。低热值的燃烧热是产品的水蒸汽在不考虑水的凝结潜热的情况下仍然保持气态时,燃烧后的燃烧热。
  The combustion heat of the fuel can be expressed by its HHV (high calorific value) or LHV (low calorific value). The heat of combustion with high calorific value is the heat of combustion after the water vapor of the product condenses into liquid state, plus the latent heat of condensation of water. The combustion heat of low calorific value is the combustion heat after combustion when the water vapor of the product is still in gas state without considering the condensation latent heat of water.
  1. 降低空气预热器的漏风率,特别是旋转空气预热器的漏风率。
  1. Reduce the air leakage rate of air preheater, especially the air leakage rate of rotary air preheater.
  2. 严格控制锅炉水的水质指标。当水冷壁管内水垢达到400mg/m时,应及时进行酸洗。
  2. Strictly control the water quality index of boiler water. When the scale in the water wall reaches 400mg / m, acid cleaning shall be carried out in time.
  3、尽量使用含硫量低的优质煤,降低空气预热器进口空气温度,现代大容量发电锅炉均装有空气预热器,防止空气预热器冷锋受热面凝结,造成空气预热器低温腐蚀。
  3. Try to use high-quality coal with low sulfur content to reduce the air temperature at the inlet of air preheater. Modern large capacity power generation boilers are equipped with air preheater to prevent the condensation of air preheater cold front heating surface, causing low-temperature corrosion of air preheater.
  热损失包括化学不完全燃烧损失、机械不完全燃烧损失、排烟损失、灰分热损失、炉膛热损失等。值得注意的是,炉体的热损失和烟气损失主要影响炉体的热效率。
  Heat loss includes chemical incomplete combustion loss, mechanical incomplete combustion loss, smoke exhaust loss, ash heat loss, furnace heat loss, etc. It is worth noting that the heat loss and flue gas loss of the furnace mainly affect the thermal efficiency of the furnace.
  (1)炉体散热
  (1) heat dissipation of furnace body
热风炉生产厂家
  通常外墙的平均温度不高于室温20左右。在冬季,热损失相对较大。350000千卡天然气热高炉用保温材料表面可以节省2公斤每小时的煤炭,相当于搭建一个规模相当大的废热利用换热器在300烟气的温度,没有大的面积的问题,所造成的阻力损失和大型投资增加热交换器。
  Generally, the average temperature of the exterior wall is not higher than about 20 ℃ of the room temperature. In winter, the heat loss is relatively large. The surface of insulating material for 350000 kcal natural gas hot blast furnace can save 2 kg of coal per hour, which is equivalent to building a large-scale waste heat utilization heat exchanger at 300 flue gas temperature, without large-scale problems, resulting in resistance loss and large-scale investment to increase the heat exchanger.
  (2)烟气带走的热量
  (2) heat taken away by flue gas
  从理论上讲,这种煤气炉的热效率可以达到100%。烟,换句话说,温度可以下降到零,但热风炉换热面积无穷,特别是在400年烟气温度、传热面积大幅增加,相应的增加维护成本,增加阻力损失,热效率的计算,必须严格控制天然气炉相关数值参数是不正确的,那么将严重影响后期的使用效果,因此,如果我们使用,能更好的掌握一些计算方法,对以后的使用或有帮助。
  In theory, the thermal efficiency of the gasifier can reach 100%. Smoke, in other words, the temperature can be reduced to zero, but the heat exchange area of the hot blast furnace is infinite, especially in 400 years, the temperature and heat transfer area of the flue gas increase greatly, and the corresponding increase of maintenance cost, increase of resistance loss, calculation of thermal efficiency, it is not correct to strictly control the relevant numerical parameters of the natural gas furnace, which will seriously affect the later use effect. Therefore, if we use it, we can better master it. Some calculation methods may be helpful for future use.
  以上是对燃气热风炉燃烧热值重要性的分析。读完它,你应该知道它对煤气炉有多重要。
  The above is an analysis of the importance of the combustion calorific value of the gas stove. After reading it, you should know how important it is to the gas stove.
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