Other

Metallgesellschaft Aktiengesellschaft

J&ouml;rg Schmalfeld

Udo Zentner

Ralf Goedecke

Ingo Dreher

Willibald Serrano

Tobias Groschang

Hans-J&uuml;rgen Weiss

Werner Fuss

Hans J&uuml;rgen Weiss

Egbert Sch&ouml;la

Udo Gropp

The present invention relates to a process of recovering monomeric esters of substituted or unsubstituted acrylic acid from polymer material having corresponding structural units by depolymerization by means of a fine-grained heat-transfer medium which is maintained above the depolymerization temperature of the polymer material. In a reactor, the polymer material is brought in contact with hot, mechanically fluidized heat-transfer medium. The resulting vapors are withdrawn and condensed, where the hot heat-transfer medium is continuously supplied at one end of the reactor, and cooled heat-transfer medium is discharged at the other end.

Method for depolymerizing polymethylmethacrylate

High temperature flash distillation, for treating residual oils originating from crude oil refining, natural bitumen and/or tar sands, comprises feeding the oil to a mixer with granular hot coke, which serves as a thermal transfer medium. In mixing, 60-90% of the oil is vaporized. The non-vaporized fraction includes metal-containing asphaltenes. This fraction is further converted in the mixer, to oil vapor, gas and coke. Gases and vapor are withdrawn from the mixer, separately from the coke. The vapor phase is cooled and condensed to produce product oil. The gas itself is a further product. The coke is reheated and recycled to the mixer as the thermal transfer medium.

Method for high-temperature short-time distillation of residual oils

Growing community of inventors

Bad Homburg, Germany

Jörg Schmalfeld

Growing community of inventors

Bad Homburg, Germany

J&ouml;rg Schmalfeld

Jörg Schmalfeld