NOVELTY - A high pressure hydrothermal processing system for processing pumpable feedstock raw material, comprises pressurizing section (2) including pressurizing unit (17) for pressurizing feedstock (7) at 100-400 bar; processing section (3) including processing unit (20) for heating feedstock at 250-400 degrees C by heating unit (25) to form raw product stream (8); and output section (4) where raw product stream is depressurized by depressurizing unit (44). The processing unit allows raw product stream to be cooled to ambient or near ambient temperature before exiting processing section.    USE - A high pressure hydrothermal processing system used for processing pumpable feedstock raw material (claimed) for removing contaminants from organic or contaminated material comprising delignitized timber, biomass, algae or dry cleaning sludge, and producing fuel source material.    ADVANTAGE - The system can be more accurately controlled. The need to use heat resistant valves in areas of high temperature is avoided. The system and process match pressure on each side of valves to reduce wear on valves and improve reliability. Because the raw product stream is at ambient or near ambient pressure, the outlet valve is subject to less wear and is more reliable than if the raw product stream was discharged through outlet valve under high pressure. The processing vessels are of different lengths to suit particular raw material used, desired residence time in processing vessel and desired outcome of process.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for continuous process for treating raw material.    DESCRIPTION OF DRAWING(S) - The drawing shows a diagrammatic view of a high pressure, high temperature processing system of waste and/or organic material.    Pressurizing section (2)    Processing section (3)    Output section (4)    Feedstock (7)    Raw product stream (8)    Pressurizing unit (17)    Processing unit (20)    Heating unit (25)    Depressurizing unit (44)