What about formaldehyde

summary

Many people want to know what to do with formaldehyde. Now I'll tell you. Now the air quality is worse and worse, formaldehyde is everywhere, how to produce formaldehyde, how to eliminate it

What about formaldehyde

First of all, decoration materials, new combination furniture and cement wall with water reducer are the main sources of formaldehyde pollution. The adhesives of plywood, big core board, medium density fiberboard and particleboard (particleboard) in decoration materials and furniture release formaldehyde when they meet with heat and deliquescence, which is the main indoor formaldehyde emission source.

Secondly, small ways to remove formaldehyde: at the beginning, pay attention to ventilation, generally more than 3 months. Then you can choose some products to remove formaldehyde. At home, you can use herbal dialin spray. Finally, you can buy some plants, such as Chlorophytum and activated carbon, as long-term absorption products for wardrobes, furniture, beds, etc. Finally, you should remind that you still need more ventilation at ordinary times, That's good.

Finally, formaldehyde is prepared by catalytic oxidation of methanol in industry, that is, the mixture of methanol vapor and air is absorbed by water through silver catalyst at 600 ~ 700 ℃. After a part of methanol is evaporated from the solution, the aqueous solution of formaldehyde is obtained, which contains 40% formaldehyde and 8% ~ 10% methanol. This aqueous solution is called formalin. If the air containing 5% - 10% methanol vapor is passed through the catalyst of iron oxide and molybdenum oxide, the obtained formaldehyde almost contains no methanol.

matters needing attention

Formaldehyde is prepared by catalytic oxidation of methanol in industry. That is to say, the mixture of methanol vapor and air passes through silver catalyst at 600 ~ 700 ℃. The generated formaldehyde and the unreacted methanol are absorbed by water. After a part of methanol is evaporated from the solution, the aqueous solution of formaldehyde is obtained, which contains 40% formaldehyde and 8% ~ 10% methanol. This aqueous solution is called formalin. If the air containing 5% - 10% methanol vapor is passed through the catalyst of iron oxide and molybdenum oxide, the obtained formaldehyde almost contains no methanol. Hope to help you solve the problem of removing formaldehyde.