Desorption reflux condenser
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What kind of water is used as the cooling medium for the desorption unit and the reflux condenser in your factory? What are the concentrations of NH3 and CO2 in the liquid exiting the reflux condenser? What is its crystallization temperature?
This post was last edited by ythwangbo on 2010-7-11 at 10:39. Semi-hermetical circulating water cooling: 24.2% CO2, 26.6% NH3; the crystallization temperature is approximately between 25 and 30
Direct cooling with circulating water. The components are similar to those on the upper floor.
Reply to 3# Xishui: Direct cooling of circulating water can easily lead to crystallization; it is better to use a semi-closed-loop circulation system
This post was last edited and replied to by Wang Li on 2010-7-12 21:02. Reply to 4# 1025199692: I am also thinking about this issue. The key is to know the composition of the material exiting the reflux condenser. To determine the melting point of the material here. Our factory is in the south. This month, the temperature of the circulating water is around 26 degrees. The winter temperature is around 0 degrees. They said that under normal circumstances, crystallization of the liquid coming out of the reflux condenser does not occur.
An exhaust pipe is installed at the bottom of the reflux condenser, and a flushing line is also provided at the desorption gas inlet; ammonia water is used for flushing and dilution when crystallization occurs in the reflux condenser or when the system is shut down. During shutdown, the outlet pipeline of the reflux pump is prone to crystallization and blockage; this can be prevented by adding ammonia to the reflux condenser, with the ammonia being sent to the circulation system via the reflux pump, thereby keeping the fluid in the pipelines in motion and avoiding crystallization and blockages in the equipment and pipelines. The melting point of the reflux condensate is between 25 and 30°C. To prevent crystallization within the reflux condenser, and to avoid crystallization blockages caused by the drop in temperature resulting from direct introduction of circulating water into the condenser, a semi-closed temperature control water system is employed in the design (see Figure 4-19). The inlet temperature of the cooling water is generally adjusted so as to prevent crystallization in the condenser. The exact words from the book: please look