I would like to ask about the issue of online instrument monitoring in the combustion process control of refinery combustion heaters (reformers, crackers, etc.)
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In the control of the combustion process in refinery heating furnaces (reformers, crackers, etc.), in order to optimize combustion efficiency, it is generally necessary to monitor CO and O2 levels in the flue gases online. The best monitoring point would be at the outlet of the radiation chamber, right? Are there any other locations that need to be monitored? In the various units of refineries, the temperatures in the radiation chambers of combustion furnaces such as reformers, cracking furnaces, coking furnaces, and conversion furnaces used in hydrogen production systems are likely to vary. Could you please tell me what the approximate combustion temperature parameters are for the furnaces in these different units? I would like to learn more about the online monitoring of boiler combustion instruments; if any teacher has relevant materials, I would appreciate it if they could share them. Thank you for your guidance!
The furnace temperature should generally be between 1300–1400°C. The temperature at the flue gas outlet is controlled depending on the type of installation and the load level. Monitoring is usually carried out by measuring oxygen content and the negative pressure in the furnace; if flue gas analysis is required, sulfur dioxide, ammonia nitrogen, and dust levels are also measured