How to operate a chlorine storage facility?
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This post was last edited by sunjl1981 on 2013-1-6 at 22:44. I would like to know the specific procedures for operating chlorine storage facilities: 1. When liquid chlorine is released from the cylinders, does the pipeline freeze or do the cylinders freeze themselves? Is it necessary to heat the cylinders with steam or water? 2. How is the alkaline solution accident tank used? Is its use still permitted today? If anyone has piping diagrams or single-pipe diagrams or something similar, please share them; I would be extremely grateful. # hcbbs
Is it a liquid chlorine storage tank? It’s normal for the pipes to freeze; this is caused by the moisture in the cooled air
May I ask the original poster what a chlorine gas storage facility is? In the case of liquid chlorine storage tanks, freezing of the release pipe or discharge pipe refers to freezing on the outside of the pipeline; this does not affect operation, so there is no need to heat it or pour hot water on it. On the contrary, insulating materials should be used to maintain insulation on the outside.
This post was last edited by xygw on 2009-11-18 at 20:47. Liquid chlorine vaporizes very easily when heated; the temperature of its vapor is extremely high, and such uncontrolled heating is dangerous. Moreover, the pressure inside liquid chlorine cylinders is very high, so heating them in this way can easily lead to accidents! As for freezing, it is caused by the heat absorption that occurs when liquid chlorine vaporizes, which leads to the condensation of moisture in the surrounding air!
The poster is a user of liquid chlorine. First, when using chlorine, you need to consider whether it is taken from the gas phase or the liquid phase, as well as the pressure conditions downstream. If the pressure at the downstream side is high, for example, reaching 3–6 kilograms, then neither the cylinders nor the pipes will freeze, whether in the gas phase or liquid phase. On this point, I’m sure you understand the relationship between saturation temperature and saturation pressure. Secondly, it is absolutely not allowed to heat the gas cylinder directly with steam; hot water at a temperature not exceeding 60 degrees Celsius can be used for heating, and the cylinder itself can also be sprayed with hot water. This temperature complies with the safety regulations for chlorine. As for why 60 degrees is specified, please go to the Standard Section of the Haichuan Forum to search for and download the safety regulations, where it is clearly stated. Thirdly, an accident alkali tank is necessary. Its function is to push the steel cylinders into this tank when there is a severe and uncontrollable leak, thereby preventing chlorine from spreading and causing a disaster of widespread toxic gas dispersion. Fourth, the steel cylinder warehouse you mentioned is not the same concept as the process for vaporizing liquid chlorine; in other words, the liquid chlorine warehouse cannot be located right next to the vaporization process – a certain distance of separation is required. In actual production, if the inventory of heavy bottles is small, for example just a few cylinders, they can be placed in the chlorine vaporization process; if the quantity is large, a dedicated storage area for heavy liquid chlorine bottles is necessary.