Qualification of air separation unit

At the installation site of the air separation plant, we may see a variety of operation methods. We may be a little surprised when we first see it. We may get used to it if we see it many times. However, many accidents are caused by our negligence and carelessness. The following are some common sense of safe construction, hoping to be helpful to everyone: 1. Workers must wear safety helmets correctly when entering the construction site, because the construction site is often chaotic. Some equipment installation site, several construction teams are constructing at the same time, it is impossible to completely guarantee that there is no falling objects. 2. Use personal protective equipment correctly, and seriously implement safety protection measures. Safety belts must be fastened when constructing on high places, cliffs and steep slopes without protective facilities. 3. It is forbidden to climb the scaffold, safety protection facilities, etc. It is strictly prohibited to take the ele...

The expansion air volume entering the upper tower increases, and the reflux ratio of the distillation section decreases correspondingly. In order to achieve the required purity of nitrogen products, more tower plates need to be set. When the reflux ratio is reduced to countless Tower plates needed to be set to make the purity of nitrogen reach the required value, then the reflux ratio is called the minimum reflux ratio. The expansion air volume entering the upper tower is first limited by the minimum reflux ratio. The closer the reflux ratio is to the minimum reflux ratio, the faster the number of tower plates needed to ensure the product purity increases, which will lead to the increase of investment, the increase of tower plate resistance, the increase of Operation pressure and the increase of energy consumption. Therefore, the reflux ratio after the inflated air enters the tower should be larger than the minimum reflux ratio. When the purity of nitrogen is required to be low, the...