Which technology is used in passive ammonia recovery systems?
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I would like to ask everyone: what technologies are currently used in the passive ammonia recovery systems in use? Where was it made? I hope everyone can help.
We used the one from the Institute of Physics and Chemistry, Chinese Academy of Sciences, and it worked pretty well
The traditional ammonia vaporization process is still relatively reliable
HR-type passive ammonia recovery technology – what is the “HR-type” technology?
Shandong Tancheng China Resources Chemical Energy Saving Technology Co., Ltd., Jinxian Tianjie Company, Shandong Jining Chemical Engineering Design Institute, and the Institute of Physical Chemistry, Chinese Academy of Sciences
Is the amount of steam required for ammonia evaporation very high? I heard it’s not very cost-effective
Our company’s also from the Institute of Physics and Chemistry, Chinese Academy of Sciences; no problems have arisen since stable production started, and it seems to be working well.
The unpowered ammonia recovery system used in our plant has one drawback: the recovered ammonia is sent directly to the gaseous ammonia system. If there are issues with the liquid level in the separator, it is easy for high-pressure gas to enter the low-pressure system, which has caused pressure levels in the refrigeration section to rise excessively on several occasions in our plant. The chiller tripped. The only relief is that no parking accident occurred.
This is a design flaw on their part; moreover, there is no shut-off valve for the separator level, which makes it very easy for the phenomenon mentioned on floor 9 to occur.
The \"high-pressure, medium-pressure, and low-pressure ammonia recovery technology\" developed by Tonghua Renhexing Chemical Technology Development Co., Ltd. does not increase the load on refrigeration units nor consume electricity; it enables the recovery of around 70% of the ammonia present in the vent gas as liquid ammonia. It is said to have shown good performance in applications at Yingshang Fertilizer Factory in Anhui Province, Haijin Chemical Co., Ltd. in Liaoning Province, and Fukang Fertilizer Co., Ltd. in Meihekou City, Jilin Province. Does anyone know anything about this?
What is the product? If it’s urea, ammonia can be directly sent to the deep hydrolysis system for ammonia recovery; is it necessary to install a recovery unit in the ammonia synthesis system as well?