초록

This invention relates to an improved process for the reprocessing of carbon containing wastes by pretreating the same thermally in the presence or absence of hydrogen, followed by hydrogenation of the pretreated material at elevated temperature and at least 200 bar hydrogen pressure.

대표청구항 ▼

In an improved process for the treatment of waste materials comprising carbon containing, synthetic organic materials with hydrogen, hydrogen containing gases, hydrogen donor solvents or mixtures thereof with or without a catalyst, the improvement comprises: (a) pretreating the waste materials at le

In an improved process for the treatment of waste materials comprising carbon containing, synthetic organic materials with hydrogen, hydrogen containing gases, hydrogen donor solvents or mixtures thereof with or without a catalyst, the improvement comprises: (a) pretreating the waste materials at least in part by exposing said materials to hydrogen, hydrogen containing gases, hydrogen donor solvents or mixtures thereof at a temperature of 75°-600°C., at a pressure of 1 to 600 bar, and at a residence time of 1 minute to 6 hours, or to an inert atmosphere, at a temperature of 75°to 600°C., at a pressure of 1 to 600 bar, and at a residence time of 1 minute to 6 hours, and then, conveying the thus treated material to a separate vessel and (b) hydrogenating the pretreated material from (a) with hydrogen, hydrogen-containing gases, hydrogen donor solvents or mixtures thereof at a temperature of 200°to 600°C., at a pressure of 30 to 500 bar, and a residence time of 1 minute to 8 hours.