The Use of Corona Discharge for Rubber Crush Drier Exhaust Control

Abstract

The rubber crush drier exhaust contains mainly styrene, ethylbenzene, cumene, diizopropylbenzene, alkylphenols, monocyclic terpenes and technological additives as stearic acid, oils an colophony. For possible application of d.c. corona discharge to control styrene in exhaust, the reaction of styrene with additives and air in various d.c. corona discharge tubes was studied. The change of styrene content in the gas phase was measured by IR absorption spectrometry. The decrease of styrene concentration was minimum 83% and reached the 98,970 efficiency. No aromatic compounds remain after corona discharge action in gas phase. The structure of solid products was specified with reflection IR absorption spectrometry and compared with a calibration polystyrene foil (300 pm). The main product has been of malein anhydride-styrene copolymer character for a negative corona discharge and of phenol or quinone-styrene copolymer character for a positive corona discharge.

Removal of cyclohexanone in transition electric discharges at atmospheric pressure

“…Many recent papers deal with the removal of various aliphatic and mainly aromatic hydrocarbons. The most frequent nonthermal plasma techniques used for VOC decomposition are electron beams, dc and pulsed coronas, dielectric barrier discharges, ferroelectric packed bed reactors etc, sometimes combined with catalysts [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. The initial parameters, such as the treated VOC and its input concentration, residence time in the reactor, etc, vary widely.…”

The Conversion of NOx in a Corona Discharge with an Electrode Material Variation

“…Apart form a polarity and a gas filling, we also varied the HV electrode (wire) material, while LV electrode material was kept the same. Totally, we observed the discharge in 16 From the experimental results follows: 1. The o n s e t d i s c h a r g e v o l t a g e of the negative corona was comparably lower than the positive one (approx.…”