Mononitrobenzene

Mononitrobenzene, obtained from Benzene with Nitric Acid in the presence of Sulfuric Acid by the adiabatic process, is the starting material for aniline which is a valuable raw material for the plastics chemistry (MDI, polyurethane) and the dyeing chemistry (aniline derivatives).

Meissner's adiabatically working MNB plants are characterized by application of tube reactors, which minimize the formation of by-products (Nitrophenol, Picric Acid and Dinitrobenzene) by optimum intermixing of the reactants, practically excluding any back mixing in the tube reactor. Due to the adiabatic technology, the reconcentration of the Sulfuric Acid accruing after separation of MNB is performed directly in the plant.

The raw Mononitrobenzene is automatically fed to the washing section consisting of Meissner compact washing units performing the washing as well as the separation of the product from the respective washing medium.

In the subsequent stripping unit the residual Benzene contained in the purified Mononitrobenzene is separated by means of steam from the Mononitrobenzene and returned into the process.

Meissner as main contractor offers, along with the MNB plant, also the Aniline plant as well as the economical waste water regeneration plant for the removal of the toxic nitrocresols and Picric Acid to obtain a biologically degradable waste water.