The issue of transporting liquid chlorine
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This post was last edited by sunjl1981 on 2013-1-6 at 23:55. Many new chlor-alkali plants today are equipped with environmentally friendly \"chlorine balance\" systems that integrate processes such as the production of caustic soda, PVC, methyl chlorides, silicones, and more. However, the chlorine produced by caustic soda is not pure enough, so it needs to be liquefied and then vaporized. What is the maximum pipeline transmission distance for liquid chlorine? What material should be used, and what safety considerations are necessary? ? What about chlorine? What issues should be considered in gasification and liquefaction? # ， ， &
We use 16Mn pipes for our liquid chlorine. There is **no specific requirement** regarding the maximum transmission distance; however, the shorter the distance, the better. If it is too far, first, the risk increases, and second, the investment required also rises.
We also use 16Mn pipes for our liquid chlorine. The transmission distance is around 800 meters; if it’s too long, it’s better to use double-layer pipes for greater safety.
Your question is too general; as mentioned above, it’s difficult to understand. I hope you can refine your question to make it more specific and targeted. How do you expect them to answer you about what to pay attention to when liquefying and vaporizing chlorine?
The problem is quite clear; those who are familiar with it can understand it at a glance. However, I was wondering if there are any standards that can be referred to
HZGGP is an expert after all – how can you not understand that? :Lol, your question is really too big; it would take several papers to answer it
Precautions during vaporization: 1. The feed to the vaporizer must be supplied in accordance with specified requirements to prevent excessive feeding. 2. Direct heating with steam is strictly prohibited during the vaporization process; the temperature of the hot water used for heating should be below 80 degrees, to avoid rapid vaporization of liquid chlorine, which could lead to high pressure and an increased separation coefficient between liquid chlorine and nitrogen trichloride. 3. The frequency and amount of waste discharge from the vaporizer should be adjusted based on the nitrogen trichloride content in the raw chlorine gas and liquid chlorine, in order to prevent explosions caused by the accumulation of nitrogen trichloride. Precautions during liquefaction: Explosions may occur due to high hydrogen content, so it is necessary to strictly control the purity of the raw chlorine as well as its hydrogen content； The liquefaction efficiency is controlled based on the hydrogen content in the liquefied off-gases. FRP is used for wet chlorine, with good performance; TI can be used for high-pressure wet chlorine, while carbon steel is suitable for dry chlorine. 16Mn is used for liquid chlorine
Many problems were solved while creating the command diagram! Additionally, in my opinion, it is advisable to avoid long-distance transportation of liquid chlorine; vaporization stations should be established nearby, and chlorine in gaseous form should be used for transportation, along with supporting systems for evacuation and accident handling. Imagine a liquid chlorine pipeline with a DN50 diameter: 1000 meters of such a pipeline can hold 2.8 tons of liquid chlorine. If something goes wrong, the consequences would be severe; therefore, using gaseous chlorine for transportation provides a higher safety factor. As for liquefaction, gasification, and material selection, these are all standard configurations with plenty of available reference materials; the poster just needs to spend some time on it. :lol