Explosion in a sulfuric acid production plant using the high-temperature pyrolysis wet process
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The high-temperature pyrolysis wet process for sulfuric acid production is a supporting facility for the further processing of C4 compounds. With stricter environmental regulations in place, it is gradually becoming a standard facility in enterprises that use the sulfuric acid method for alkylation. So, can an explosion occur in the process of regenerating waste acid through high-temperature pyrolysis? If an explosion is possible, what factors cause it? The experts can share their opinions, and I will also gradually add my own insights.
This post was last edited by Clauspolunit on 2016-11-3 08:40. Since acid regeneration units require fuel gas, there is a risk of flash explosions in places where fuel gas is present; however, this is not necessarily related to the process itself.
In the high-temperature pyrolysis of waste acid to produce sulfuric acid, in addition to natural gas posing a risk of direct explosion, too low an oxygen level during the production process can also lead to an explosion in the facility. For example, when the oxygen level is too low, biochemical sulfur is generated as a result of the high-temperature treatment of waste acid; at the same time, incomplete combustion of the fuel gas produces carbon monoxide. Once carbon monoxide is generated and reaches its explosive limit, it can trigger an explosion throughout the entire facility. Abnormally high risk
Yes, fuel gas can cause explosions, and carbon monoxide produced by the incomplete combustion of fuel gas can also lead to explosions; the risk level is very high.
This risk exists wherever fuel gas is used; it has nothing to do with the high-temperature pyrolysis process itself. I’m not sure what you mean by that
Bro, what I want to say is that regarding the waste acid processing process, what factors can cause an explosion? The direct factors include explosions caused by fuel gas, as well as improper operation of the process itself, which can lead to carbon monoxide explosions.
The spent acid regeneration unit requires an oxygen content of over 3%; otherwise, elemental sulfur is likely to be generated, leading to issues such as system blockage. Therefore, carbon monoxide is unlikely to be produced during combustion.
This process should include electrostatic mist removal equipment; insufficient oxygen content during pyrolysis leads to the formation of carbon monoxide, which enters the electrostatic mist remover, and explosions can occur under high pressure
Well, yes, it comes with electric demisting equipment.
Damage to the insulation layer of the oxygen tank in oxygen-enriched combustion can easily lead to physical explosions. The mixing ratio of oxygen and fuel gas, as well as sealing issues, can also lead to deflagration