Technological parameters of pyrolysis of waste polytetrafluoroethylene

Meissner, Egbert; Wróblewska, Agnieszka; Milchert, Eugeniusz

doi:10.1016/s0141-3910(03)00259-3

Cited by 37 publications

(45 citation statements)

References 4 publications

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“…A recent paper [13] establishes the influence of technological parameters (temperature (in the range 600-800 8C), pressure (100-760 mmHg), PTFE feeding rate (250-1000 g/h) and nitrogen flow (0-200 L/h)) on PTFE pyrolysis, using statistical methods of experimental design.…”

Section: Introductionmentioning

confidence: 99%

Products obtained in the fuel-rich combustion of PTFE at high temperature

García

Viciano

Font

2007

Journal of Analytical and Applied Pyrolysis

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Section: Introductionmentioning

confidence: 99%

Products obtained in the fuel-rich combustion of PTFE at high temperature

García

Viciano

Font

2007

Journal of Analytical and Applied Pyrolysis

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“…10 Recently research was done on the optimization of TFE, HFP, and C 4 F 8 isomers. 11 This research was done on a batch type reactor with a flow rate of 250-1000 g h À1 PTFE and nitrogen as a carrier gas or as a partial pressure reducer. The product was frozen in sample holders and analyzed by means of a gas chromatograph.…”

Section: Introductionmentioning

confidence: 99%

Depolymerization of clean unfilled PTFE waste in a continuous process

Walt

Bruinsma

2006

J of Applied Polymer Sci

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A continuous process is described whereby waste PTFE was converted into tetrafluoroethylene (C2F4, TFE), hexafluoroethane (C2F6, HFE), hexafluoropropylene (C3F6, HFP), and octafluorocyclobutane (c‐C4F8, OFCB). The waste PTFE was depolymerized inside a reactor that was heated by a radiofrequency induction generator. The reactor was capable of operating at various temperatures (600–900°C) as well as various reduced pressures (5–80 kPa). The depolymerization reaction conditions could be changed while the reactor was in operation in order to manipulate the reaction product composition. Under certain conditions, high yields of TFE (> 94%) and low concentrations of by‐products were formed. The PTFE was fed vertically downward from the hopper, with the screw feeder, into the reactor where the depolymerization process took place. The hot intermediate products were continuously evacuated through a self‐cleaning quench probe, where it was quenched to form the final products. The depolymerized products were analyzed with a gas chromatograph. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 2752–2759, 2006

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“…TFE and HFP were prepared by the pyrolysis of waste PTFF in accordance with the literature description [26]. Iodine, KF, ICl were purchased from POCh Gliwice, Poland; 2,2 0 -azobis(isobutyronitrile) (AIBN) and benzoyl peroxide (BP) from Fluka.…”

Section: Raw Materialsmentioning

confidence: 99%

“…Some of the practical applications of telomers especially in the production of the surface-active agents for galvanizing bath and fire-extinguishing agents are given in [19].…”

Section: Introductionmentioning

confidence: 99%