Hydrochlorination: Hydrochlorination fluidized bed reactor

This question is phrased a bit awkwardly. The raw materials for the cold hydrogenation reactor are HCl, H2, silicon tetrachloride, and silicon powder. The raw materials for the chlorohydration reactor are HCl and silicon powder.

Please, the original poster, break down the question more clearly; it’s a bit vague

The poster’s question is correct; it is said that the chlorohydration process carried out by CNN involves HCL + H2 + SI. What the poster referred to is likely the grid plates in the reactor, which serve to achieve stirring and fluidization effects

The reaction between HCL and silicon powder on the 2nd floor is called synthesis. Chlorohydration involves one additional reactant, HCl, compared to cold hydrogenation; what the original poster said is correct.

Fluidized bed reactors are efficient, but they cause significant equipment wear. Dust removal can be achieved using built-in cyclones, bag filters, or wet dust removal methods.

As the core component of cold hydrogenation, the reaction zone of the fluidized bed can be constructed in various ways, with different materials being used; different reactor designs are required depending on the specific process requirements. 1. For cold hydrogenation, it is preferable that the fluidized bed reactor not have a cyclone dust collector, and this design is widely used abroad； 2. Omitting cyclone dust removal can reduce a lot of hassle, but it requires increasing the length-to-diameter ratio of the reactor ； 3. Foreign experiments have shown that when the length-diameter ratio exceeds 18, the separation effects provided by cyclone dust removal and the expanded section of the reactor become very small ； 4. Internal cyclone dust removal is only used in situations where it is necessary to recover expensive catalysts; its installation and maintenance are very complicated, so it is not recommended ； 5. In China, only the chlorohydration unit of Huanghe Hydropower uses an internal cyclone dust collector; however, the length-to-diameter ratio of the chlorohydration fluidized bed reactor at Huanghe Hydropower is very small, so the use of an internal cyclone may be reasonable in this case.

As the core component of cold hydrogenation, the reaction zone of the fluidized bed can be constructed in various ways, with different materials being used; different reactor designs are required depending on the specific process requirements. 1. For cold hydrogenation, it is preferable that the fluidized bed reactor not have a cyclone dust collector, and this design is widely used abroad； 2. Omitting cyclone dust removal can reduce a lot of hassle, but it requires increasing the length-to-diameter ratio of the reactor ； 3. Foreign experiments have shown that when the length-diameter ratio exceeds 18, the separation effects provided by cyclone dust removal and the expanded section of the reactor become very small ； 4. Internal cyclone dust removal is only used in situations where it is necessary to recover expensive catalysts; its installation and maintenance are very complicated, so it is not recommended ； 5. In China, only the chlorohydration unit of Huanghe Hydropower uses an internal cyclone dust collector; however, the length-to-diameter ratio of the chlorohydration fluidized bed reactor at Huanghe Hydropower is very small, so the use of an internal cyclone may be reasonable in this case.

What are the structural and functional differences between internal cyclone dust removal and external cyclone dust removal?