Choice of heating methods! ! ! !
Thread Content
Nowadays, intermittent production generally uses steam for heating. If the reaction temperature is controlled below 80 degrees, can electric heating water circulation control be used? What are the costs of the two methods? I hope everyone will discuss it! ! ! !
Both steam and electric heating can be used, but electric heating is easy to break. It is recommended to use low-pressure steam heating.
The choice of heating method cannot be generalized and depends on the specific situation, such as: How big is the heat supply? Intermittent heating, how long does each heating last? Are there any temperature requirements for steam, hot water or other media providing heat sources? What are the raw materials and energy used to make steam and hot water? What is the price? Only based on these data and a comprehensive technical and economic comparison can a more suitable heating method be determined.
Why is the electric heating water circulation prone to breakage? Wouldn't it be better if the temperature difference from the reaction temperature is small?
Steam heating speed is fast, but it is difficult to control and has serious hysteresis. Hot water is easy to control, but has the disadvantage of slow heating speed. You must comprehensively consider your actual situation. As the experts on the third floor said, the hot water must also be added with a circulation pump, and whether the steam is ready or newly added... If the reaction requires continuous heating, an atmospheric pressure boiler may be suitable. The hot water may need to be heated to more than 90 degrees, so it is recommended to use steam.
Considering that LZ is an intermittent production, if there is a long-term source of steam, use steam, which is more stable (if the temperature is adjusted well). If there is no steam source, use electricity. It feels more economical, you can stop whenever you want, which is convenient.
Going back to the people upstairs, we use someone else's steam, and the price is very high. One ton of steam costs more than 200 yuan, so I want to see if electricity is suitable! ! !
If you really want to choose electric heating, you must be careful when choosing an electric heater manufacturer. Nowadays, there is a mixed bag. The quality cannot be guaranteed, and it usually breaks down after two or three years.
Most of the steam is readily available, but hot water requires additional equipment, and the process temperature must be heated to 80 degrees, but the water temperature cannot reach 100 degrees. I have seen water used at 60 degrees. Electric heating is not as good as thermal oil. There are more mature equipment available for purchase, the operating margin is large, and it seems to be safer.
Heating with medium frequency electric furnace, the temperature is better controlled
Nowadays, steam is generally used for intermittent production heating. If the reaction temperature is controlled below 80 degrees, electric heating can be used for water circulation control or steam. The cost of the two methods is of course that electric heating is cheaper!
Whether the factory has a steam pipe network or a gas production system, if so, priority should be given to it, which can improve the economic benefits of the main plant.
Consider using condensate water for heating.