What are the multifunctional deliming agent

The "Multifunctional deliming agent" is not a standardized product, and its specific type and composition highly depend on the application scenario (such as leather processing, boiler cleaning, metal surface treatment, or oil refining process). The functions and compositions of the "ash remover" in different fields vary significantly. Multi functional ash removers are mainly used in the process of removing ash from bare skin after soaking in leather, and their use must comply with modern leather technology standards,

In the leather industry, traditional ash removers mainly use ammonium salts (such as ammonium sulfate and ammonium chloride) or organic acids (such as lactic acid and formic acid) to neutralize the residual alkali during the ash leaching process; Modern "multifunctional" environmentally friendly products often refer to nitrogen free ash removal agents? (such as formulas based on organic acids or carbon dioxide systems), with the functions of ash removal, softening, and reducing ammonia nitrogen emissions. Some product names, such as "Hongrui 95" (95% organic acid ash removal agent), are not generic brand names.

In boiler/industrial flue ash cleaning, the so-called "ash cleaning agent" or "slag removal and combustion aid" (such as three in one combustion aid slag removal and ash cleaning agent, SN type cigarette ash cleaning agent) contains nitrate, ammonium salt, iron oxide, boron anhydride, etc. Its function is to promote the oxidation and removal of ash scale, improve combustion efficiency, and belong to combustion additives? Instead of traditional "ash removal", and not used in biological or leather scenes.
In metal processing (such as aluminum alloy), "ash remover" refers to the removal of residual ash film after anodizing? Acidic solution? (containing nitric acid, sulfuric acid or organic acid+corrosion inhibitor+surfactant), some products claim to be "multifunctional" (also capable of ash removal, polishing, and oxidation prevention), such as certain environmentally friendly formulas containing chromium or chromium free.
In the refining unit, "multifunctional ash removal and settling agent" is a specialized additive (such as the product developed by CNOOC Tianjin Institute) used to suppress equipment scaling and promote catalyst ash settling. Its composition is a trade secret and usually contains chelating agents, dispersants, and corrosion inhibitors. It is only suitable for industrial processes.
There is no true concept of "Multifunctional deliming agent" in the daily household or general cleaning field; The so-called "anti graying drugs" (such as Liangjia and Jiakangnuo) are actually antifungal topical preparations used for the treatment of onychomycosis, and are not related to the "de graying" chemical process; Although "concrete floor hardener" is called "ash removal", it is actually a sealing and curing agent, mainly composed of silicates or resins.
Note that "multifunctional" is often a marketing statement, and the actual functionality is defined by the application scenario. If referring to leather graying, attention should be paid to pH adjustment and nitrogen free environmental protection; If referring to boiler ash cleaning, it belongs to combustion additives; Metal ash removal focuses on surface activation. There is no cross domain universal "Multifunctional deliming agent", and the selection must clearly specify the usage scenario. If specific industries are involved (such as leather making, oil refining, metal processing), it is recommended to provide detailed operating conditions for accurate identification.