| abstract |
3, 5 dichloro 4 (1, 1, 2, 2 tetrafluoro ethyoxyl), refined apparatus for producing of aniline relates to the production technical field of chemical products. Passing through the blow -down valve and connecting the difluoro ether delivery pipe being equipped with bottom that outer jacket established the rectifying still of agitator in, pass through valve and corresponding pipeline at the top of rectifying still and receive with DMF collection tank, fine work respectively and jar is connected, the rectifying still still is equipped with the crude and inserts mouth and vacuum pump connection mouth. The off -the -shelf purity of fluorine ether after refined can reach 99.5%, and problem that the mode of this rectification had avoided toluene to re -refine the solvent recovery that arouses reduces the production of tar, accords with environmental protection and safe requirement more. Easy operation, the energy consumption is also low. |