Chloromethane training equipment

Chloromethane training equipmentChloromethane, with the chemical formula CH3C1, is widely used in industry for the production of chlorine

In the fields of siliconization, paraffin wax, ethylene production, and solvents.

Raw material preparation

The main raw materials for chloromethane are methane (CH4) and chlorine gas (C12), with a molar ratio of 1:2. In the production process, high-purity methane and chlorine gas need to be used to ensure the quality of production

The quality of the produced chloromethane is stable.

reactor

The production of chloromethane is usually synthesized by reacting hydrogen chloride with methane, as shown in the following reaction equation:

CH4+12 → CH3C1 + HC1

The reaction needs to be carried out at a certain temperature and pressure. In order to improve the reaction rate and conversion rate,

Aluminum oxide is often used as a catalyst. The reactor is made of stainless steel and the reaction temperature is400~500 degrees Celsius, reaction pressure is 1~3MPa.

refrigeration system

In order to maintain a constant reaction temperature inside the reactor, a refrigeration system needs to be established around the reactor.

The refrigeration system uses refrigerant-Ammonia is used for refrigeration to control the temperature of the reactor.

Separation and Purification

After the reaction is complete, the reaction product needs to be separated and purified to produce high-purity chloromethane.

The separation process uses a distillation tower to separate chloromethane by utilizing its boiling point lower than that of hydrogen chloride and methane. The separated chloromethane contains many impurities, and before proceeding to the next purification step, it is necessary to absorb the hydrogen chloride gas through an absorber. The absorber uses high-purity water for absorption, absorbs hydrogen chloride, filters out impurities, and finally obtains high-purity chloromethane.

control scheme

Key monitoring process parameters:Reactor temperature and pressure; Flow of incoming and outgoing materials; Concentration of flammable and toxic gases;deviceTemperature and pressure, etc.

Basic requirements for safety control:Temperature, pressure, liquid level, flow alarm and interlock; Emergency interlock cut-off device; Under accident conditionsDangerous gasAbsorption neutralization system; Combustible and toxic gas detection and alarm devices, etc.

Control method:Translate into EnglishreactorpressuretemperatureOnce an interlocking relationship is formed, the system will establish an interlocking parking system. Safety facilities, including safety valves, high-pressure valves, emergency discharge valves, level gauges, one-way valves, and emergency shut-off devices.