Views: 0 Author: Site Editor Publish Time: 2020-12-21 Origin: Site
At present, many people are very worried about the decoration of the house and will often encounter problems in the process of decoration, so that problems need to be solved, which also wastes a lot of your time. This is the problem of removing formic acid in the interior when decorating the house.
Formic acid (chemical formula HCOOH, molecular formula CH2O2, molecular weight 46.03), commonly known as formic acid, is a simple carboxylic acid. A colorless, irritating liquid. Weak electrolyte, melting point 8.6 C, boiling point 100.8 C. It is very acidic and corrosive and can stimulate skin blistering. It is found in the secretions of bees, certain ants and caterpillars. It is an organic chemical raw material and also used as a disinfectant and preservative.
For everyone in the process of removing formaldehyde, to provide some useful reference, including methods of removing formaldehyde:
The acetic acid obtained by removing a small amount of formic acid from monoacetic acid conforms to GB/T 1628-2008 industrial glacial acetic acid standard. The method is simple, low cost and high production efficiency. The technical scheme adopted by the invention is as follows: acetic anhydride is added to acetic acid containing a small amount of formic acid, and the qualified product standard of glacial acetic acid for industrial use can be obtained by reaction at 90 ~120 C for 1~8 hours. The content of formic acid is less than 0.3%. The acetic acid containing no more than 5.0% formic acid, wherein the formic acid content is preferably 0.3% - 5.0%.
Second, my reaction system is formic acid, using inorganic acid as catalyst, after the reaction, I want to remove inorganic acid first, and then rotate to remove formic acid. Otherwise, the concentration of inorganic acid in the process of rotate steaming is increasing, resulting in carbonization of the product.
The three decorated rooms are suitable for the decorated places with light odor and good ventilation conditions, which can be ventilated for a long time. For a long time, it is difficult to get rid of odor in heavily polluted and poorly ventilated living places.
Tetrandra, Aloe Vera and Tiger tail orchid can absorb a large amount of indoor formic acid and other pollutants to eliminate and prevent indoor air pollution. The substances secreted by jasmine, clove, honeysuckle, morning glory and other flowers can remove some bacteria in the air, inhibit the growth of tuberculosis and typhoid bacteria, and make indoor air clean and hygienic. Most plants photosynthesize during the day, absorb carbon dioxide and release oxygen; breathe at night, absorb oxygen and release carbon dioxide. On the contrary, some plants, such as cactus, release carbon dioxide during the day and absorb carbon dioxide at night, release oxygen, so that cactus indoors at night, can supplement oxygen, conducive to sleep.
Fifthly, it should be remembered that the removal of formic acid from acetic acid by traditional process mainly adopts high tray number distillation unit to separate the two, so as to obtain products conforming to GB/T1628-2008 industrial glacial acetic acid standard. With this method, the cost of equipment investment is high, and the production efficiency is low, which is not very economical.
Qingdao Hisea Chem Co., Ltd which located in the northwest of China, is the largest salt in China, potassium chemicals production ranked fourth in the world. The main products are Glacial acetic acid, Nitric Acid, Formic Acid, Hydrogen peroxide, Potassium hydroxide, , Caustic Soda, sodium sulphide etc. annual production capacity is 6,000,000 tons. In order to increase product export, our company sets up the branch and the construction of the logistics center in Qingdao port, welcome general customers come to visit.