Parallel operation of ammonia synthesis towers
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For the parallel operation of ammonia synthesis towers, is it generally done by connecting two towers in series or in parallel? Which method is better? How should the process be designed specifically?
Parallel operation; if it is series operation, the resulting effect will be poor!
It depends on what the original poster’s goal is I have seen documentation describing a series-connected process for ammonia synthesis, which is the method used by the Feicheng Fertilizer Factory in Shandong.
Generally, two towers are operated in parallel, which increases the capacity of the synthesis tower. If they are operated in series, on the one hand the system resistance becomes too high, and on the other hand cooling and separation devices must be installed between the towers, resulting in high investment costs.
It is generally operated in parallel; series operation is also used. The tower at the back is a radial tower, as this helps to reduce resistance. It seems that Nanjing Guochang has implemented this approach in Feicheng and Dongping in Shandong Province.
It is advantageous to use a series configuration for ammonia synthesis towers; this allows the design pressure difference of the circulation pump to be utilized, with one circulation pump serving both towers. The resistance in these two towers is not equal to the sum of their individual resistances. Zhengyuan Group does an excellent job in this regard, and I recommend that you collaborate with Shijiazhuang Zhengyuan Tower Equipment Co., Ltd. However, this response is not intended as advertising.
At present, there is only one φ1000 tower, with a capacity of around 220 tons per tower. The goal is to increase this capacity to around 330 tons, while keeping the investment low. It is also necessary to determine whether a single φ1000 tower can meet the requirements, and what additional equipment is needed Thanks