Should a fire-tube heated reboiler be treated as a heating furnace (an open flame source) in terms of fire separation requirements?

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Dear colleagues: We are currently developing a device for the dehydration of triethylene glycol (TEG). The main process involves the counter-current contact between triethylene glycol with low moisture content (lean liquid) and natural gas in an absorption tower; this contact enables the removal of moisture from the natural gas. The dehydrated natural gas is sent to downstream units, while the triethylene glycol that has absorbed water is referred to as rich liquid. In a regeneration tower, heat is supplied via a reboiler, which causes the moisture to be desorbed. The resulting water vapor is discharged outside, while the bottom product of the regeneration tower is lean triethylene glycol, which is then pumped back to the absorption tower to enable continuous absorption and regeneration. Environmental protection, global servers, humor and joy, various locations in Guangxi and Guangdong, information and the electronic world, care for animals, charitable activities, CAD exchanges. The heating mechanism of the reboiler is of the fire-tube type; purified natural gas is used as fuel, which is burned through combustion nozzles. Heat is transferred to the surface of the fire tubes via flame radiation and convection, thereby heating the glycerol-rich fluid and enabling desorption. Are there any spacing requirements between this type of reboiler and other Class A equipment? Section 5.2.3 of GB50160 states that the bottom reboiler and other equipment that is closely connected to the main equipment can be connected directly or arranged in close proximity to it ； Is this kind of reboiler suitable for open-flame equipment? Thank you