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Structural characteristics of small reactor

By GCM September 28th, 2023 138 views
The structure of the small reactor is basically the same. In addition to the reactor, 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 strengthening the mass transfer process.
Structural features
1. Operating pressure
Small reactors operate at higher pressures. The pressure in the kettle is generated by chemical reaction or formed by temperature rise. The pressure fluctuates greatly, sometimes the operation is unstable, and the sudden pressure rise may exceed several times the normal pressure. Therefore, most reactors are pressure vessels.
2. Operating temperature
The operating temperature of the small reactor is relatively high, and usually the chemical reaction needs to be carried out under certain temperature conditions, so the reactor is under both pressure and temperature.

There are usually several ways to obtain high temperature:
1. Water heating
It can be used when the temperature is not high, and its heating system has two types: open type and closed type.
2. Steam heating
3. Heating with other media
If the process requires to operate at high temperature or to avoid the use of high-pressure heating system, other media can be used instead of water and steam.
4. Electric heating
The resistance wire is wound on the insulating layer of the reactor cylinder, or installed on an ad hoc insulator some distance away from the reactor, so a small space gap is formed between the resistance wire and the reactor body.
The first three methods to obtain high temperature all need to add a jacket on the kettle body. Due to the large range of temperature changes, the jacket and shell of the kettle are subjected to temperature changes to generate temperature difference pressure. When using electric heating, the equipment is lighter and simpler, the temperature is easier to adjust, and there is no need for pumps, stoves, chimneys and other facilities, it is also very simple to start, the risk is not high, and the cost is low, but the operating cost is higher than other heating methods.
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