Is it necessary to install blast vents on exhaust pipes?
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Experts recommend installing blast vents on exhaust pipes, not because of high pressure in these pipes, but to prevent them from exploding in case of a fire. Even in cases of process pipes with higher levels of risk, such measures are not taken; so why are such strict requirements imposed on exhaust pipes? Is there any documentary evidence for this?
All furnaces are equipped with explosion vents; waste gas pipelines are more prone to explosions than process pipelines, as specified in the documents
The production system is a sealed, anaerobic environment. High air content in the exhaust pipeline
This post was last edited by CHANGBAISHI on 2022-9-15 07:11. To be blunt, aside from technical considerations, even from an administrative perspective, if your authority exceeds that of the expert, you can consider removing that expert – no specific criteria are needed for that. If you are under the guidance of an “expert,” it’s best to follow their instructions. Technically, it’s better to explain it from a principle perspective. It is not advisable to reject it on the grounds of other high-risk process pipeline designs, especially without understanding the design principles. From a security perspective, there is a saying: \"It is better to assume it exists than to assume it does not.\" ”Prevent problems before they occur. If you were the boss, you might consider the investment aspect and decide not to install it. For employees who are not managers, the more such safety facilities there are, the better for those who operate them – so why not make use of them? For reference.
Exhaust gases can explode when the concentration of organic substances is high
Judging from your IP address, it seems you are in Jiangsu Province. The Emergency Management Department of Jiangsu Province has issued a document regarding the \"Safety Technical Requirements for Regenerative Thermal Oxidizer (RTO) Systems (Draft for Comment)\\": 4.3.5.2 Pressure relief valves should be installed on the intake pipes of the RTO system, while pressure relief doors should be installed inside the furnace chamber. The vented gas should be released to a safe location, away from areas where people are present and other process facilities. Therefore, there is a basis for installing vent pipes on exhaust gas pipelines. However, as for how to implement this requirement, no effective solutions have been found yet. In the fine chemical industry where I work, most exhaust gas pipelines are made of antistatic non-metallic materials. The pressure inside these pipelines is usually slightly positive or slightly negative. It is not clear at present how to set the pressure threshold for the vent valves installed there. Moreover, in cases of accidents involving exhaust gas pipelines, what I have seen, as well as incidents that have occurred at nearby companies, are mostly fires; extremely violent explosions have not been observed yet. So, the companies here have adopted some rather crude methods: they install a tee fitting on the exhaust pipe and place a diaphragm with very low pressure on it; when the pressure inside the exhaust pipe rises slightly, the diaphragm is pushed aside. It’s not known what the actual effectiveness of this approach is!
It's sufficient to install a flame arrester on the exhaust pipe in front of the incinerator; this is what major design firms do.
What is an antistatic non-metallic material? Our experts require the export of static electricity; due to the special nature of the material, it is not possible to find non-metallic materials that can conduct static electricity
Really? Can a flame arrester prevent explosions?
Have the experts provide the standards and guidelines; if they exist, they must be followed.