Micro-high pressure reactor bodies are generally made of steel (or lining). The materials, stirring devices, heating methods, shaft seal structures, volume sizes, temperatures, pressures, etc. used in the reactors have similarities and differences, and there are many types. Their basic characteristics are as follows:
Structure: The structure of the reactor is basically the same. In addition to the reactor body, there are also transmission devices, stirring and heating (or cooling) devices, etc., which can improve the heat transfer conditions and control the reaction temperature more uniformly without enhancing the mass transfer process.
Operating pressure: The reactor has a higher operating pressure. The pressure in the kettle is caused by a chemical reaction or is formed by an increase in temperature. The pressure fluctuates greatly, and sometimes the operation is unstable. The sudden pressure increase may exceed the normal pressure several times, so most reactors are pressure vessels.
Operating temperature: The operating temperature of the reactor is relatively high, and chemical reactions usually need to be carried out under certain temperature conditions, so the reactor is both under pressure and temperature. There are usually the following methods to obtain high temperature:
Water heating can be used when the temperature is not high. The heating system has two types: open type and closed type. The open type is simple. It consists of a circulating pump, a water tank, a pipeline and a regulator that controls the valve. When high-pressure water is used, the equipment requires high mechanical strength. The outer surface of the reactor is welded with a coiled tube. The resistance increases and the heat transfer effect decreases.
Steam heating When the heating temperature is below 100, it can be heated with steam below one atmospheric pressure: in the range of 100~180℃, use saturated steam; when the temperature is higher, use pressure cooker hot steam.
When heating several processes with other media must operate at high temperatures or avoid the use of high-pressure heating systems, other media can be used to replace water and steam.
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