Dear netizens, which chemical processes that are under strict supervision are included in the chemical reaction equations below?
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Dear netizens, the chemical reaction equations below include those chemical processes that are under strict supervision; I would appreciate some guidance!
It’s a simple diazotization reaction. Diazonium salts are generally used in the next synthetic step without being separated after preparation, as they are not stable and require storage at low temperatures; dry diazonium salts are even less stable and prone to explosion. In this reaction, nitrite is somewhat toxic.
Is there no chlorination reaction involved in this?
Amino and nitro groups form a nitrogen-nitrogen double bond; this is the diazotization process.
Bro, this reaction is undoubtedly a diazotization reaction, but it’s not certain whether a chlorination reaction occurred after the diazotization.
The “chlorination process” among hazardous chemical processes that are not subject to strict supervision.
Yes, I have this doubt as well. It’s undisputed that a diazotization reaction takes place, but it’s not entirely clear whether chlorination is also involved. If both of these reactions occur, then two sets of DCS systems would need to be installed in one reactor. After conducting HAZOP and LOPA analyses, if SIS systems are required, then two sets of those as well would be necessary. It’s not certain whether this reaction can be carried out in two steps; if it can, then it’s possible to set up the systems separately.
Chlorination is a reaction in which chlorine atoms are introduced into the molecules of compounds; the technological process that involves chlorination reactions is known as the chlorination process. Look, chlorine is on the final product.
When a reactor involves two or more different hazardous chemical processes simultaneously, separate automatic control systems (including safety instrumented systems) should be installed, or it should have the capability for switch control, with appropriate technical and managerial safety measures put in place for such switching. Jiangsu has similar requirements; these are processes that respond in different ways, so it is necessary to implement different interlocks in the system for switching purposes, rather than having two separate DCS systems. What’s the point of having two sets of DCS for two hazardous chemical processes that react simultaneously? With the same interlock values and actions, could there be conflicts between the two DCS systems?
In other words, if there are two different hazardous chemical reactions taking place in one reactor, the temperature and pressure need to be set separately; one set of temperature and pressure values is required for the first reaction, and another set for the second reaction, is that what it means?