H4-VV-23-D mpre hensive service THE PERFECT COUPLING FOR T Helical gear boxes H4

Flender/Flender Gear Units/Helical gear boxes H4

gende lndustrie (CVA . The pilot plant has operated successfully for over 1,0 hours in the interim, with more than 1,0 kg of lasticwaste, rubberparts, oilsand, oil shaleandsewajesludgebeingprocessed. It has been slown that the product gas released from liquid pro ucts is suitable or indirect heating of the fluidised bed, thus enabling energy-autonomous operation. Combustion of the as in radiant heating pi es generates lower carbon monoxide and nitro- gen oxide emission?evels than conventionarcombustion plants. Other emissions do not occur in the closed process cle Depending on the feedstock used, between 1 and 5% by weight soot contaminated wit[ sand is produced as solid waste,which contains practicallyall the fillers and heavy metals originally present in the starting material. The results of this project prompted Messrs. DRP (Deutsche Reifen- und Kunststoffpyrolyse GmbH,asubsidiaryof Messrs.. . Ecke1mann)toconstructandcommissionan industrial-scale plant with capacityof 5 tpa in 1,with sponsorshi from the BMFT. The plantwas built in Ebenhausen, near Ingolstadt,and contains two fluidisexbed reactorsequipped with radiant heating pipes for the pyrolysis of plastic waste and old tyres. An initial trial run was performed for polyethylene waste. However, this trial run revealed problems, particularly in the~feeding of the plastic, oil separation and soot discharge. Messrs. Brown Boveri & Cie., now known as Asea Brown Boveri (ABB),tookoveltheplantin 1and,withsponsorshipfromtheBMFT,convert- ed and improved it to such an extent that demonstration operation became possible. 2. Working steps Various types of plastic were pyrolysed during the trial operation in 1: Polyethylene PE: Granules, lumps, films, drums, oil containers Polyethylene terephthalate (polyester) PET: Chips from Trevira production waste Polyvinylidene chloride PVDC: Pyrolysed together with PE as model substance for PFC Plastic from domestic refuse, consisting primarily of PE: