Process of catalytic cracking of solid waste from pine derivatives industry

A process of catalytic cracking of waste originating from pine processing industry, which may, or not, contain plastics, paper or glue residues for obtaining chemical products, which are stable, sustainable and cost-effective, comprising the following steps:

• a) grinding waste originating from pine processing industry into a particle size between 0.5 mm and 75 mm;
• b) spraying a solution of a solvent selected, from crude glycerol and glycerol derivatives, lactates and respective citrates, fatty acids, Tall oil, as well as esters or lactones thereof, glycerol carbonate, solketal among others, said solvents being used pure or in mixtures, and a catalyst in homogeneous phase over the waste originating from pine processing industry;
• c) introducing the mixture of step b) into a first reactor at temperatures between 80° C. and 250° C.;
• d) maintaining the mixture of step b) under vigorous stirring at atmospheric pressure in a first reactor for a period of time between 30 minutes and 180 minutes;
• e) removing the solid residues obtained from the mixture of step d) by physical processes;
• f) reintroducing the solid residues obtained in step e) into the first reactor;
• g) introducing the liquid fraction obtained in step e) into a second reactor at temperatures between 80° C. and 250° C.;
• h) maintaining the liquid fraction of step e) in the second reactor for a period of time between 30 minutes and 180 minutes;
• i) removing the solid residues obtained from the mixture of step h) by physical processes;
• j) storing the liquid mixture obtained in step i) in a storage tank, the liquid mixture i.e. bio-oil;
• wherein, in order to avoid thermo-oxidative degradation, all the process is carried out under a nitrogen atmosphere with flow rates between 3 m3/h and 5 m3/h.