I would like to ask the seniors: What should be done in case of a sudden power outage at a chlor-alkali plant?

This book, “Proceedings of the 2nd International Symposium on Power Quality”, should not be referred to as ‘senior’

With so many factories around, how can there be no accident plans? For routine operations, just follow the accident response plan; of course, one needs to be clever, otherwise it will be too late. Also, the scope is a bit large

Establish emergency response plans and follow them, develop operating procedures, and strengthen employee training, etc

Just don’t release chlorine gas and PVC monomers

Just don’t expose it to chlorine gas. I was exposed to chlorine gas today. Depressed

Also, is it a power outage or a high-voltage outage?

It’s my fault for not asking clearly! I’m sorry~~ What I mainly wanted to know is how a company’s headquarters should deal with, handle, and implement emergency plans! It’s my first time working in this industry... hehe~`

First, notify the hydrogen chloride synthesis unit to initiate accident chlorine treatment, shut down hydrogen chloride synthesis, and vent hydrogen; meanwhile, add a terminator to the PVC polymerization reactor and discharge the material into the accident tank. Second, the acetylene process is protected by nitrogen gas; third, the electrolytic cells are protected with brine (in the case of diaphragm cells). Thermal power plants are not very familiar with this

Is your thermoelectric system used to power the electrolyzers? If so, and if it’s a problem with the power plant, it should be possible to connect to the external grid (if that’s feasible). If not, then some of the electrolyzers need to be shut down first; of course, a plan must be in place beforehand. At the same time, inform those responsible for chlorine hydrogen, vinyl chloride, and PVC. That’s roughly it.

Generally, both chlor-alkali systems and PVC systems are equipped with interlock control systems; that is, when the chlor-alkali system stops operating, the PVC hydrochloric acid synthesis, acetylene generation, and VCM synthesis systems also stop operating as a result of the interlock. For facilities that are equipped both with a calcium carbide plant and a cogeneration system, if the electrical load of the calcium carbide plant is sufficient to meet the thermal needs, there is no need to interlock the chemical processing system with the cogeneration system. Otherwise, when the chlor-alkali system stops operating, the chemical processing system should also interlock to shut down the cogeneration system. However, under normal circumstances in companies, it is unlikely that only the chlor-alkali system will experience a power outage; rather, it is usually the entire production system that loses power at the same time. In such cases, the system automatically switches to the emergency power supply system to ensure the basic power supply required for safe operations.

This is generally how power outages are handled in cases involving caustic soda: 1. Electrolysis: 1. The chief operator immediately locks down the electrolysis cell. N2 is purged into the system, and at the same time the system begins to cycle. The team leader informed the dispatcher to 2. divert chlorine to the detoxification pipeline. 3. Notify the chlorine-hydrogen process to switch the chlorine pump for pest control. 4. The operator checks the liquid levels in various tanks on site, as well as the status of the instruments. 5. The operation of the primary brine system must not be stopped.

Every factory has backup power generation equipment, so LZ doesn’t need to worry

It’s all specified in the factory’s operating procedures; however, the situation described by the original poster could never happen even once in ten thousand years! Typical factories are equipped with triple power supply systems to ensure no power outages!