Formaldehyde solution
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Are there any special requirements for the formaldehyde solution storage tank?
As far as I know, formaldehyde solution storage tanks require heat exchange devices, because the solution tends to undergo self-polymerization at low temperatures; especially in winter when the temperature is low, heating is necessary.
It’s not a simple heat exchange process; insulation is required, as well as temperature controls. It is best to use a heating tape. With temperature control. It polymerizes at low temperatures and decomposes at high temperatures
Another point is that formaldehyde volatilizes very easily at room temperature; therefore, in addition to the considerations mentioned above, the storage tank for formaldehyde solutions must also take into account the issue of volatilization, which requires the use of a nitrogen blanket
In fact, formaldehyde storage tanks are usually 37% aqueous solutions, and few facilities install additional devices for protection
Industrial formaldehyde is an aqueous solution with a concentration of 36% to 37%. It is highly toxic, corrosive, and flammable. When a aqueous solution of formaldehyde is disturbed, formaldehyde gas is released, and it forms an explosive mixture when exposed to air. It reacts with nitrogen oxides at around 180°C, causing an explosion. It can also react violently with perchloric acid, benzene, formic acid, nitromethane, magnesium carbonate, and hydrogen peroxide. Therefore, given its characteristics, a corrosion-resistant material should be chosen for the storage tank ； To prevent air from entering the tank, it is necessary to avoid the entry of substances such as nitrogen oxides, perchloric acid, benzene, performic acid, nitromethane, magnesium carbonate, and hydrogen peroxide into the tank.