-
公开(公告)号：DE4324112C1
公开(公告)日：1995-02-02
申请号：DE4324112
申请日：1993-07-20
Applicant: BASF AG
Inventor： STABEL UWE DR , WOERZ HELMUT DR , KOTKAMP RUEDIGER DR , FRIED ANDREAS DR
Abstract: A process for recycling plastics in a steam cracker, for example a blow moulded fraction composed of bottles, containers, etc., including possible soiling, sticky label materials, fillers, residual contents, etc., wherein - the comminuted, dry plastic waste is stored in a storage container, - the plastic waste is metered by means of a conveyor into a stirred container equipped with a heating jacket, - the plastic waste is melted at about 300-350 DEG C in the stirred container, - the melt is fed into a steam cracker, where the polymers are converted at about 400-450 DEG C into products (feed materials) which can be vaporised and cracked in a conventional way in the steam cracker, - the above products are separated by means of a 1st column installed directly downstream of the steam cracker into - a bottom product obtained at about 330-380 DEG C which, after removal of the residues and solids, is on the one hand returned directly to the steam cracker and on the other hand is fed as heating medium through the stirred container and through the heating jacket of the stirred container and returned to the steam cracker, and - a top product obtained at about 240 DEG C which, after partial condensation, is fed into a 2nd column at about 110 DEG C, - the liquid/gas mixture obtained after the partial condensation is separated by means of the above 2nd column into - a ... at the bottom of the 2nd column ... Original abstract incomplete.
-
公开(公告)号：CZ9300640A3
公开(公告)日：1994-06-15
申请号：CZ64093
申请日：1993-04-14
Applicant: BASF AG
Inventor： STABEL UWE DR , WUNSCH GERD DR , WOERZ HELMUT DR , FRIED ANDREAS DR , KOTKAMP RUEDIGER DR
-
Search Results
12
records
(took 0.02 seconds)
