I’d like to ask everyone: is low temperature required in most cases in fine chemical production?
Thread Content
I work with frozen saline. Recently, a client asked me whether producing fine chemicals always requires operating at low temperatures. Since I’m not familiar with this, I’m seeking advice from everyone here
Not all fine chemicals require low temperatures; some types actually need high temperatures. It is only certain production processes that demand low temperatures.
Depending on the different processes, some of the reactions are low-temperature reactions that require cooling with brine or even liquid nitrogen； The crystallization process generally involves cooling with brine or at low temperatures to induce crystallization ； Additionally, the reflux reaction and distillation condensation also require brine.
If there is a rise in temperature, then there must be a drop as well. If the heat release is severe, low-temperature freezing is of course necessary ； If the crystallization temperature is low, the yield is high; of course, freezing is necessary. It depends on the process.
If energy consumption and low-temperature production costs are taken into account, different material properties need to be considered based on actual conditions; it is not possible to simply operate at low temperatures
Different processes result in different varieties; the temperatures vary as well
I think generally, more reaction occurs with heating and less with freezing, because cooling can also be done using water. Moreover, instead of using a calcium chloride aqueous solution, organic solvents such as ethanol aqueous solutions can be used; calcium chloride can be considered for use as a desiccant.
In fine chemical industries, the flow rate of the medium is relatively low; primary cooling is mostly achieved using chilled brine, while secondary cooling makes use of circulating water. In oil refining plants, air coolers are generally used
Generally, factories that produce fine chemical products need to have appropriate refrigeration equipment.
No~~~ The synthesis of many nanomaterials requires medium or high temperatures……
Fine chemical processing mostly involves heating, while cooling generally takes place during the post-treatment stage, but not at low temperatures. Low-temperature treatment is generally used in special industries!
They all have them. Low temperatures are used for controlling heat release, recrystallization for purification, etc. As for high temperatures, there are many applications.