Chlorination reaction (related to the 15 major hazardous processes listed by the Work Safety Administration)
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Is sulfur dichloride a chlorinating agent? Is the reaction between sulfur dichloride and phenol to form chlorophenol a chlorination reaction? I would appreciate your guidance: handshake
In my personal opinion, since there is a word meaning \"equal\" in the relevant provisions, it seems that this is covered by it. The reaction you mentioned should be considered a substitution reaction – chlorine replacing a hydrogen atom... For an authoritative explanation, it’s best to consult the safety supervision authorities, preferably the national authority in charge.
Reply to 1# siena2008: The list of special operations specified in Order No. 30 issued by the State Administration of Work Safety includes 15 hazardous processes and one type of operation related to chemical automation control instruments for the safe handling of hazardous chemicals. The description for chlorination processes reads as follows: “It refers to the operations carried out at positions involved in the storage, vaporization, and chlorination of liquid chlorine.” Suitable for operations in processes such as substitution chlorination, addition chlorination, and oxychlorination. ”Therefore, your processing operation falls under the chlorination process, and the operators are considered special-type workers who need to hold relevant certificates to work.
Actually, **these fifteen designated hazardous processes are a bit ridiculous – some very simple reactions are labeled as hazardous processes!**
To be honest, most of these fifteen processes are quite dangerous; they are mostly exothermic reactions (while cracking is an endothermic reaction). Of course, it cannot be said that all reactions are dangerous (different materials result in different heat release amounts, and thus different levels of risk). However, policies and regulations cannot cover every possible scenario. If a company believes that the risk level associated with its production facilities is not high and that automated control systems or safety interlocks are not necessary, it can invite experts to conduct an assessment. Nevertheless, I still recommend that companies carry out automation control upgrades; if such upgrades are effective, they can at least reduce the workload.
Reply to 5# jingsan: Haha, let me give a simple example. For instance, the Mannich reaction – a reaction in which compounds with active hydrogen atoms react with aldehydes and amines – is also classified as an ammoniation reaction according to the definition of 15 hazardous processes. But where lies the hazard in this process? How many more companies use ammonia, chlorine, and the like, replacing them directly with ammonia and chlorine gas? If that were the case, companies would have long been eliminated from market competition!
What was said upstairs is correct, but the regulations set by the safety supervision agency are more reasonable. What does it mean to put people first? (Of course, there are some issues in the actual implementation by these safety supervision agencies), but people should be given top priority. This is also why **there are constitutions and other laws.
First, understand the spirit of the document before checking it; one cannot simply judge based on the name. The considerations are mainly based on factors such as whether there are high temperature and pressure, intense heat release, and the possibility of the reaction getting out of control. Otherwise, the rusting of a kitchen knife is also an oxidation reaction, and it represents a dangerous process as well