When the reaction kettle of the reactor circulation heating device is operated, the temperature requirement is relatively high. Then, how much do you know about the heating of the reactor in the reactor heating device?
The reactor circulation heating device has a high operating temperature, and usually the chemical reaction needs to be carried out under a certain temperature condition, so the reactor is subjected to both pressure and temperature. The method of heating the water is adopted when the temperature of the reactor heating device is not high, and the heating system has two types: open type and closed type. The open type is relatively simple. It consists of a circulating pump, a water tank, a pipe and a regulator for controlling the valve. When high pressure water is used, the mechanical strength of the equipment is high, the outer surface of the reactor is welded with a coil, and the coil has a gap with the wall of the kettle. The thermal resistance increases and the heat transfer effect decreases.
When the steam heating temperature is below 100 °C, it can be heated by steam below one atmosphere; in the range of 100~180 °C, saturated steam is used; when the temperature is higher, high pressure superheated steam can be used. In the state where other media is heated, if the process requires high temperature operation or if high pressure heating system is to be avoided, other media may be used instead of water and steam, such as mineral oil (275-300 ° C), diphenyl ether mixture ( The boiling point of 258 ° C), molten salt (140 ~ 540 ° C), liquid lead (melting point 327 ° C) and so on. When the reactor heating device obtains high temperature, it is necessary to add a jacket on the kettle body. Due to the large temperature variation, the jacket and the casing of the kettle are subjected to temperature changes to generate temperature difference pressure.
If the temperature change range of the reactor heating device is relatively large, the reactor circulation heating device is required to be relatively advanced in configuration, wide in temperature range, high in precision, and good in use performance.
