An apparatus and methods to eliminate PFAS from wastewater biosolids through fluidized bed gasification. The gasifier decomposes the PFAS in the biosolids at temperatures of 900-1800° F. Synthesis gas (syngas) exits the gasifier which is coupled to a thermal oxidizer and is combusted at temperatures of 1600-2600° F. This decomposes PFAS in the syngas and creates flue gas. Heat can be recovered from the flue gas by cooling the flue gas to temperatures of 400-1200° F. in a heat exchanger that is coupled with the thermal oxidizer. Cooled flue gas is mixed with hydrated lime, enhancing PFAS decomposition, with the spent lime filtered from the cooled flue gas using a filter system that may incorporate catalyst impregnated filter elements. The apparatus and methods thereby eliminate PFAS from wastewater biosolids and control emissions in the resulting flue gas.

An apparatus and methods to eliminate PFAS from wastewater biosolids through fluidized bed gasification. The gasifier decomposes the PFAS in the biosolids at temperatures of 900-1800° F. Synthesis gas (syngas) exits the gasifier which is coupled to a thermal oxidizer and is combusted at temperatures of 1600-2600° F. This decomposes PFAS in the syngas and creates flue gas. Heat can be recovered from the flue gas by cooling the flue gas to temperatures of 400-1200° F. in a heat exchanger that is coupled with the thermal oxidizer. Cooled flue gas is mixed with hydrated lime, enhancing PFAS decomposition, with the spent lime filtered from the cooled flue gas using a filter system that may incorporate catalyst impregnated filter elements. The apparatus and methods thereby eliminate PFAS from wastewater biosolids and control emissions in the resulting flue gas.

The present invention is intended to provide a gas purification apparatus and a gas purification method with an excellent thermal efficiency and capable of degrading COS at a high degradation rate. A gas purification apparatus configured to purify gas at least including COS, H.sub.2O, CO.sub.2, and H.sub.2S includes a COS treatment device which is provided with a COS conversion catalyst and configured to treat and degrade COS in the gas by hydrolysis, and H.sub.2O adjustment means configured to adjust the concentration of H.sub.2O in the gas to be introduced into the COS treatment device.

The present invention is intended to provide a gas purification apparatus and a gas purification method with an excellent thermal efficiency and capable of degrading COS at a high degradation rate. A gas purification apparatus configured to purify gas at least including COS, H.sub.2O, CO.sub.2, and H.sub.2S includes a COS treatment device which is provided with a COS conversion catalyst and configured to treat and degrade COS in the gas by hydrolysis, and H.sub.2O adjustment means configured to adjust the concentration of H.sub.2O in the gas to be introduced into the COS treatment device.

The present invention relates to a method for gasification of carbon-containing materials including biohazard wastes, and more specifically, to a method for gasification of carbon-containing materials which allows an increase in carbon efficiency and a reduction in carbon dioxide emission, comprising the steps of: biohazard wastes grinding and sterilization, mix with carbon-containing materials for the gasification; and catalytic production of diesel fuel. A system having a movable platform including: material preparation block, gasification and catalytic of diesel fuel production reactors which are structurally and functionally integrated. In the practice of the process, a mixture of carbon-containing materials, a compressed air feed and process steam is fed to the gasifier to produce a synthesis gas. The synthesis gas is fed to the Fischer-Tropsch reactor where it is catalytically reacted to produce heavy hydrocarbons. The outlet from the Fischer-Tropsch reactor is separated into water, a low heating value tail gas, and the desired hydrocarbon liquid product. The water is pressurized and heated to generate process steam. The system further includes a plurality of heat exchangers that enable heat to be recovered from the outlet of the gasifier. The recovered heat is used to make the process steam as well as to preheat the hydrocarbon mix before it is fed to the gasifier and preheat the synthesis gas before it is fed to the Fischer-Tropsch reactor. The method of the present invention greatly increases carbon efficiency and reduces the generation of carbon dioxide.

The present invention relates to a method for gasification of carbon-containing materials including biohazard wastes, and more specifically, to a method for gasification of carbon-containing materials which allows an increase in carbon efficiency and a reduction in carbon dioxide emission, comprising the steps of: biohazard wastes grinding and sterilization, mix with carbon-containing materials for the gasification; and catalytic production of diesel fuel. A system having a movable platform including: material preparation block, gasification and catalytic of diesel fuel production reactors which are structurally and functionally integrated. In the practice of the process, a mixture of carbon-containing materials, a compressed air feed and process steam is fed to the gasifier to produce a synthesis gas. The synthesis gas is fed to the Fischer-Tropsch reactor where it is catalytically reacted to produce heavy hydrocarbons. The outlet from the Fischer-Tropsch reactor is separated into water, a low heating value tail gas, and the desired hydrocarbon liquid product. The water is pressurized and heated to generate process steam. The system further includes a plurality of heat exchangers that enable heat to be recovered from the outlet of the gasifier. The recovered heat is used to make the process steam as well as to preheat the hydrocarbon mix before it is fed to the gasifier and preheat the synthesis gas before it is fed to the Fischer-Tropsch reactor. The method of the present invention greatly increases carbon efficiency and reduces the generation of carbon dioxide.

The biomass gasification device described in this embodiment is equipped with temporary holding sections (10)(20) that temporarily hold and discharge heat carriers (30). The temporary holding section has a vessel (111)(121) and a discharge section (119)(129) for discharging the heat carriers. A baffle (115)(125) within the vessel (111)(121) is provided to form a gap between the main body of the baffle and the interior side wall of the vessel, for the heat carriers (30) to pass through. Alternatively, piping (131)(141) may be provided on the interior side walls of the vessel (111)(121) for passage of the heat carriers.

The biomass gasification device described in this embodiment is equipped with temporary holding sections (10)(20) that temporarily hold and discharge heat carriers (30). The temporary holding section has a vessel (111)(121) and a discharge section (119)(129) for discharging the heat carriers. A baffle (115)(125) within the vessel (111)(121) is provided to form a gap between the main body of the baffle and the interior side wall of the vessel, for the heat carriers (30) to pass through. Alternatively, piping (131)(141) may be provided on the interior side walls of the vessel (111)(121) for passage of the heat carriers.

A system for gasifying biomass is disclosed. The system comprises a water storage tank, a water pump, a heat exchanger, a plasma torch heater, a gasifier, an ash cooler, a spray tower, a dust collector, a deacidification tower, and a desiccator. The water storage tank is connected to the water inlet of the heat exchanger; the vapor outlet of the heat exchanger is connected to the vapor inlet of the plasma torch heater; the vapor outlet of the plasma torch heater is connected to the vapor nozzle of the gasifier; the ash outlet of the gasifier is connected to the ash inlet of the ash cooler; the gas outlet of the gasifier is connected to the gas inlet of the spray tower; and the gas outlet of the spray tower is connected to the gas inlet of the heat exchanger.

A system for gasifying biomass is disclosed. The system comprises a water storage tank, a water pump, a heat exchanger, a plasma torch heater, a gasifier, an ash cooler, a spray tower, a dust collector, a deacidification tower, and a desiccator. The water storage tank is connected to the water inlet of the heat exchanger; the vapor outlet of the heat exchanger is connected to the vapor inlet of the plasma torch heater; the vapor outlet of the plasma torch heater is connected to the vapor nozzle of the gasifier; the ash outlet of the gasifier is connected to the ash inlet of the ash cooler; the gas outlet of the gasifier is connected to the gas inlet of the spray tower; and the gas outlet of the spray tower is connected to the gas inlet of the heat exchanger.