What are the different types of stirring methods used in hydrogenation reactors?

The stirring types commonly used in hydrogenation reactors include anchor-type, paddle-type, turbine-type, propeller-type, and ribbon-type agitators. When the reactor has a high aspect ratio, double-layer impellers can be employed; alternatively, the impeller configuration can be customized according to customer specifications. Hydrogenation reactors can be classified into different sealing types based on their sealing mechanisms: rotary seals, mechanical seals, and magnetic seals. As for heating methods, electric heaters are used, while cooling is achieved through jacketed cooling or by means of an internal fan coil system within the reactor.

The hydrogenation reactor unit is designed with a gas feed module, a liquid feed module, a reaction module, and a collection module. The feed gas and feed liquid are mixed in a specific ratio, heated, and then fed into a fixed-bed reactor. The feed gas is metered and controlled by a mass flow controller of the same quality, while the feed liquid is metered using a dosing pump. The reactor is heated by a three-stage induction heating furnace. After exiting the reaction module, the reaction mixture first undergoes gas-liquid separation: the liquid feedstock is directed to a liquid storage tank, whereas the exhaust gases are typically either filtered and discharged or routed to an online analyzer for continuous monitoring.

A hydrogenation reactor is a type of reactor used in laboratory experiments. It is suitable for conducting organic chemical and chemical reactions, and simultaneously enables highly precise synthetic reaction experiments involving the measurement of temperature, the introduction of rare gases, pressure control, electrical conductivity, and redox potential. It is a piece of production or experimental equipment that integrates a reaction vessel, an automated control system for reaction conditions, and systems for feeding raw materials and discharging products.

The temperature control of the hydrogenation reactor relies on adjusting the temperature inside the reactor vessel by regulating the temperature of the heat-transfer oil furnace in the jacket surrounding the hydrogenation reactor. The larger the volume of the heat-transfer medium used in the system, the lower the effective power output available for heating the reactor vessel, and consequently, the slower the temperature-control response becomes.

1. The entire liquid circulation system of the hydrogenation reactor is sealed. The system software includes an expansion vessel, which is thermally insulated from the liquid circulation system and does not participate in the liquid circulation itself—rather, it is merely mechanically connected. Regardless of whether the temperature of the circulating liquid is high or ultra-low, the substance inside the expansion vessel remains below 60 degrees Celsius.

2. The entire liquid circulation system is a closed-loop software system. At ultra-low temperatures, it does not absorb water vapor; when the hydrogenation reactor operates at high temperatures, it does not generate welding fumes. The high-temperature heat transfer oil can operate over a very wide temperature range. With the same equipment and the same heat transfer medium, temperature control can be achieved from -100 degrees to over 200 degrees Celsius.

3. All valves in the entire cycle are mechanical and electronic-free.

Hydrogenation Reactor Operating Procedures:

1. During use and inspection, the connecting components and transmission system parts must be firm and reliable, with no signs of bubbles, seepage, dripping, or leakage.

2. The hydrogenation reactor should be installed on a sturdy, level operating table. The relative height of the operating table should be determined based on application requirements and equipment specifications, and sufficient indoor space—either on the table itself or more—should be reserved. Therefore, installation and maintenance are both extremely important.

3. Installation must comply with specifications, and the transmission shaft must be vertical. The angle of deviation (inclination) of machinery and equipment must not exceed 1/1000 of the overall relative height.