Chlorohydrin process propylene oxide spray chlorination unit
Thread Content
Is there any expert in chlorohydrin-process propylene oxide spray chlorination devices in the industry who can help us with a design? If possible, leave your contact information; we’d like to make some modifications.
Is your chlorine dissolution effect not good? Is there too much by-product dichloropropane? Don’t rush to modify the chlorine dissolution unit; try adjusting the amount of circulating propylene and the process water volume. Be careful not to let the reaction temperature exceed the limit in summer.
Thank you to the person above; it’s true that there are more by-products. We use a simple chlorine dissolving device, and we hope it will be possible to modify this device. The amounts of circulating propylene and water, as well as the temperature, have all been adjusted, but the effect is not significant; there is still a considerable gap compared to advanced levels.
This is a technically complex issue that falls under classified technology； In the past, the chlorination reactors used, also known as chlorine pre-dissolution reactors, were of the straight-through type. Later, starting in the 1990s, various producers of propylene oxide using the chlorohydrin process adopted Japanese technology and phased out the existing domestic production methods. However, judging from the process introduced by Tianjin Chemical Plant from Mitsui East Asia, the chlorination reactor is not very different from those we used before; the only difference is that the external circulation system for hypochlorous acid treatment is better, and there is no chlorine gas injection device ； I’m not sure about other manufacturers ； The production technology introduced by Jinxi Chemical Plant from Asahi Shoko’s Japanese subsidiary ； Jinling Petrochemical Plant No. 2 adopted the technology from Japan’s Showa Denko Company ； If necessary, the poster can get in touch with their engineers.
To explain, I used to work at the Jiamusi Petrochemical Plant, as the head of the Two Alkanes Workshop (which was responsible for the production of ethylene oxide and propylene oxide using the chlorohydrin process). As chemical plants across the country began to adopt foreign technologies, our state-owned factory was shut down in 1998 due to various reasons. But I have a deep affection for propylene oxide produced by the chlorohydrin method.