China's industrial and domestic low pressure industrial hot stove consumes nearly 6 billion tons of standard coal per year. If 50% of users can directly reuse the condensate water with high calorific value as hot stove water supply, it will be an important measure of energy saving and emission reduction. It can obviously reduce fuel consumption and soften water output of hot blast stove, reduce steam production cost, and improve the water quality of hot blast stove after reuse of condensate water. It can also reduce the heat loss of hot blast stove and improve the thermal efficiency of hot blast stove. In a sense, the social benefits of water saving, energy saving and environmental protection may even exceed the direct economic benefits.
At the present stage, the state is constantly improving the implementation of the national policy of energy conservation and emission reduction. It is proposed that in the process of social development, energy conservation is not simply to reduce the use of energy, but to improve the utilization of energy through the adoption of new energy-saving technologies, new processes and new equipment. As a common equipment, hot stove is imperative for energy saving and emission reduction. Today, let's talk about it in detail.
There are many unique problems in China. Although some factories adopt imported hot blast stoves, the pipelines are carbon steel. Oxygen corrosion and carbon dioxide corrosion are serious, which leads to the problem of excessive iron ions in condensate water. High content of iron ion water is an unsafe factor in hot blast stove, which causes pitting and pitting corrosion of hot blast stove wall and causes perforation and scrap of hot blast stove. 在中高压工业热风炉中，铁离子含量相对比较低，常采用牺牲树脂和活性炭复合双层膜，以及保安过滤方式去除冷凝水中的铁离子。冷凝水含铁超过国家热风炉水质标准，不能直接回用的另一个危害是：60%-70%以上的低压热风炉排污率高于15%-25%，而国家标准是5-10%，大的高温水排污是我国热风炉能耗高的主要原因。已经引起相关部门的重视，是亟待解决的难题。
In medium and high pressure industrial hot blast stoves, the iron ion content is relatively low. Sacrifice resin and activated carbon composite double-layer membranes are often used to remove iron ions from condensate water by security filtering. The condensate water contains more iron than the National hot blast stove water quality standard. Another hazard that can not be directly reused is that the discharge rate of low pressure hot blast stoves with 60% - 70% or more is higher than 15% - 25%, while the national standard is 5 - 10%. Large high temperature water discharge is the main reason for high energy consumption of hot blast stoves in China. It has caused the attention of relevant departments and is a difficult problem to be solved.
With the development of science and technology, the innovation of hot blast stove's filtration mode, filter material selection and backwashing mode has been reformed, and the condensate iron removal technology suitable for China's national conditions has been developed. With this technology, the high temperature condensate can be directly recycled, and the sewage rate will be reduced by 7%-15% in the past. The investment cost can be recovered through the reuse of condensate water 3-6 months after the use of the equipment, which is of great significance for energy saving and water saving in the operation of industrial hot blast stoves.
标签:   热风炉 环氧地坪漆 环氧地坪 地坪 环氧地坪施工