Requirements for the SH3009 acidic flare

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There are several requirements in SH3009 regarding acidic flare heads, such as the following: 9.2.5 Flare heads used to handle acidic gases should be equipped with wind shields. The provisions note that 9.2.4 focuses on the burnout rate of toxic and harmful substances in the gases for acidic gas flares. The acidic gases from petrochemical enterprises are mainly hydrogen sulfide-containing gases. Currently, in the design of acidic gas flares, a low velocity along with maintaining an appropriate combustion temperature is commonly used; alternatively, a high-velocity flare tip at 0.5 Mach can be employed to ensure thorough mixing of the acidic gases with air, thereby meeting the requirements for complete combustion of hydrogen sulfide. Therefore, I would like to ask whether the acidic torch in SH3009 refers to gases containing hydrogen sulfide? For other types of acid gases that do not contain hydrogen sulfide, such as acrylic acid gas and propionic acid gas, if they are vented to a flare, is it necessary to comply with the requirements for acid flares specified in SH3009? Do these gases also need to be defined as acidic flares? Most of the information available online indicates that an acidic flare generally refers to hydrogen sulfide, but there is no specific definition of an acidic flare in any regulatory documents. I hope engineers with experience in torches or from torch manufacturing factories can provide an answer.