Centrifugal extraction machine in the manufacture of nylon 66 phenol wastewater treatment
Nylon 66 by adipic acid and adipic amine polycondensation, and the preparation of adipic acid mainly using phenol method, based on phenol as raw material, so in the production of nylon 66 would produce huge amounts of waste water containing phenol, phenol wastewater is very serious harm to human beings, therefore, the phenol removal is very necessary to study the water.
In order to further improve the phenol wastewater treatment efficiency, in recent years, the treatment of wastewater containing phenol at home and abroad scholars do a lot of research work, and develop a variety of processing methods.
This article mainly introduced during the preparation of nylon 66 centrifugal extraction machine processing technology of wastewater containing phenol.
Introduction of nylon 66
Chinese alias: polyamide 66 short fiber;
Gather adipic acid hexamethylenediamine;
Nylon 66 resins;
Poly has two acyl hexamethylenediamine;
nylon 66 performance nylon 66 fatigue strength and high rigidity, good heat resistance, low friction coefficient, good wear resistance, but hygroscopicity and dimensional stability is not enough.
Usually applied in the medium load, using temperature characteristics
nylon 66 1.
Excellent mechanical properties.
Nylon high mechanical strength, good toughness.
Since the embellish sex, good frictional resistance.
Nylon has the very good since embellish sex, small friction coefficient, thus, its service life is long as the driving part.
Good elasticity, fatigue resistance is good, can withstand the double deflection of tens of thousands of times 4.
Corrosion resistant performance is good, not bad, not afraid decay, have the ability of alkali resistance, but no acid and oxidant 5.
Dyeing performance good 6.
Relative density is small, only 1.
14, in addition to the polyolefin fiber, fiber is the lightest of phenol waste water produced in the production of nylon 66 the cause of nylon 66 by adipic acid and adipic amine polycondensation.
Its main production process of monomer synthesis, preparation of nylon 66 salt and polycondensation three processes.
due to the preparation of adipic acid mainly using phenol method, based on phenol as raw material, using rainie nickel as catalyst, in 140 - l50 ℃ and 2 ~ 3 mpa pressure, hydrogen generation cyclohexanol, then with nitric acid of 60% ~ 65% concentration, in the presence of copper or vanadium catalyst, in 55 ~ 60 ℃ oxide into adipic acid.
So when in the production of nylon 66 contains a small amount of wastewater containing phenol.
centrifugal extraction machine the manufacture of nylon 66 phenol wastewater treatment other than in addition to phenol technology, centrifugal extraction machine the manufacture of nylon 66 phenol wastewater treatment has a large capacity, less energy consumption, small pollution, quick removal and the advantages of the recycled, the method dealing with short process, simple operation, convenient, and can achieve a higher rate of removing phenol and recovery.
With the development of adsorbent modified and theoretical research thorough, the extraction method and treatment of industrial wastewater containing phenol in the eutrophication of water body is bound to play an important role.