Waste to Energy By Way of Hydrothermal Decomposition and Resource Recycling
OwnerRobert Van Naarden, Marco Bonilla +5inventors
InventorsRobert Van Naarden, Marco Bonilla, Hans Jasper, Robert Jasper, Kuni Yoshikawa, Toshifumi Yamada, Matthew Song
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Abstract
A method and an apparatus for disposing wastes comprising the steps of conducting a hydrothermal decomposition reaction of the wastes, separating the products into a solid fuel and waste water, combusting the solid fuel, scrubbing the combustion gas, generating steam using the heat generated by the combustion, and purifying the waste water, exhibit a high energy-efficiency, while exhibiting a high removal rate of the pollutants generated during the combustion.
Claims14
A method for disposing wastes comprising the steps of:
- (a) conducting a hydrothermal decomposition reaction of the wastes using 170-250° C. and 18-25 bar steam;
- (b) separating the product of step (a) into a liquid residue and a solid product using gravity, centrifuging, or applied pressure;
- (c) drying the solid product separated in step (b) to obtain a solid fuel;
- (d) combusting the solid fuel obtained in step (c);
- (e) scrubbing the combustion gas generated in step (d);
- (f) generating 170-250° C. and 18-25 bar steam to be supplied to step (a), by using the heat generated in step (d);
- and
- (g) purifying the separated liquid residue in step (b), followed by discharging.
An apparatus for disposing wastes comprising:
- (a) a reactor for hydrothermally treating the wastes with 170-250° C. and 18-25 bar steam;
- (b) a separator for separating the product of the reactor (a) into a liquid residue and a solid product by using gravity, centrifuging, or applied pressure;
- (c) a dryer for drying the solid product separated in the separator (b) to obtain a solid fuel;
- (d) a combustion chamber for combusting the solid fuel obtained in the dryer (c);
- (e) a scrubber for scrubbing the combustion gas generated in the combustion chamber (d);
- (f) a boiler for generating 170-250° C. and 18-25 bar steam to be supplied to the reactor (a) by using the heat generated in the combustion chamber (d);
- and
- (g) a purifier for purifying the liquid separated in the separator (b), followed by discharging.
Dependencies are inferred from the claim text.