The present invention addresses the processing of waste and low-value products to produce useful materials in reliable purities and compositions, at acceptable cost, without producing malodorous emissions, and with high energy efficiency. In particular, the invention comprises a multi-stage process that converts various feedstocks such as offal, animal manures, municipal sewage sludge, tires, and plastics, that otherwise have little commercial value, to useful materials including gas, oil, specialty chemicals, and carbon solids. The process subjects the feedstock to heat and pressure, separates out various components, then further applies heat and pressure to one or more of those components. Various materials produced at different points in the process may be recycled and used to play other roles within the process. The invention further comprises an apparatus for performing a multi-stage process of converting waste products into useful materials, and at least one oil product that arises from the process.

Process For Conversion of Organic, Waste, or Low-Value Materials Into Useful Products

Integrated catalytic gasification processes are provided involving generating steam for converting carbonaceous materials to combustible gases, such as methane. Generally, steam generated from the combustion of a biomass is provided to a catalytic gasifier, wherein under appropriate temperature and pressure conditions, a carbonaceous feedstock is converted into a plurality of product gases, including, but not limited to, methane, carbon monoxide, hydrogen, and carbon dioxide.

Steam Generation Processes Utilizing Biomass Feedstocks

The present invention relates to processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam and an oxygen-rich gas stream. The processes comprise using at least one catalytic methanator to convert carbon monoxide and hydrogen in the gaseous products to methane and do not recycle carbon monoxide or hydrogen to the catalytic gasifier.

Processes for gasification of a carbonaceous feedstock

Particulate compositions are described comprising an intimate mixture of a biomass, such as switchgrass or hybrid poplar, a non-biomass carbonaceous material, such as petroleum coke or coal, and a gasification catalyst, where the gasification catalyst is loaded onto at least one of the biomass or non-biomass for gasification in the presence of steam to yield a plurality of gases including methane and at least one or more of hydrogen, carbon monoxide, and other higher hydrocarbons are formed. Processes are also provided for the preparation of the particulate compositions and converting the particulate composition into a plurality of gaseous products.

Biomass Compositions for Catalytic Gasification

The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of a carbonaceous feedstock in the presence of steam, syngas, a hydromethanation catalyst and an oxygen-rich gas stream.

Processes for hydromethanation of a carbonaceous feedstock

PROBLEM TO BE SOLVED: To produce a methane-based fuel by treating organic wastes with a high gasification efficiency and at the same time, to recover energy in the form of electricity, heat or the like. SOLUTION: Fuel gas is produced by the method comprising (1) a process in which liquid organic matters are charged into the first reactor of a pressurized heated state via a loading apparatus capable of adjusting the inner pressure, and solid organic components are solubilized, (2) a process in which the gas-liquid mixture formed in the previous process is treated for gas-liquid separation, and (3) a process in which catalytic cracking is performed in the presence of a metallic supported catalyst to produce a gas mainly composed of methane gas while keeping the temperature and pressure so that at least a part of the separated liquid phase obtained in the previous process holds a liquid phase in the second reactor.

Production of fuel gas

PROBLEM TO BE SOLVED: To collectively treat org. solid waste and water with high decomposition efficiency and to recover power or heat energy. SOLUTION: This treatment method is composed of a process of subjecting a liquid mixture of org. solid waste and liquid waste to wet oxidation treatment in the presence of oxygen in a first reactor at 100 deg.C or higher while holding pressure keeping a liquid phase, a process of removing formed sludge and/or a metal component from the first reactor, a process of subjecting a high temp. and high pressure treated liquid to gas-liquid separation, a process of removing sludge and/or a metal component from the liquid phase and mixing a part of the liquid phase with the liquid waste to circulate the same to the first reactor and a process of subjecting the remainder of the liquid phase and the gas phase to catalytic wet oxidation treatment at liquid linear velocity of 0.1cm/sec or more at 100 deg.C or higher under pressure keeping a liquid phase.

Simultaneous treatment of organic solid waste and liquid waste

PURPOSE:To perfectly and inexpensively decompose cyan by subjecting a cyan compd., a nitrogen compd. or the like in waste water to wet oxidation treatment in the presence of oxygen and separating and removing sludge and/or metal components from the treated soln. and adding sulfuric acid, sulfur or the like to the treated soln. before applying wet oxidation treatment thereto. CONSTITUTION:The cyan-containing waste water from a waste water storage tank 1 is mixed with the oxygen-containing gas from a compressor 22 to be supplied to a primary reaction tower 5. The quantity of oxygen added to this waste water is set to below theoretical oxygen quantity necessary for decomposing a cyan compd., a nitrogen compd. or the like into harmless products. The treated soln. issued from the reaction tower 5 is sent to a gas-liquid separator 6 through a heat exchanger 3 and a cooling tower 7 and the separated liquid phase component 10 is separated into a primary treated soln. 12 and a solid 3 by a solid-liquid separator 11 and a part of the primary treated soln. 12 is allowed to meet with the treated soln. of the reaction tower 5 and the remainder thereof is sent to an intermediate storage tank 16 and mixed with sulfuric acid supplied from a sulfuric acid storage tank 14. The resulting soln. mixed with oxygen-containing gas is sent to a secondary reaction tower 20 packed with a catalyst and subjected to wet oxidation treatment.

道夫二川

Papers

Production of fuel gas

Simultaneous treatment of organic solid waste and liquid waste

Treatment of waste water containing metal cyan complex ion

道夫 二川

Papers

Production of fuel gas

Simultaneous treatment of organic solid waste and liquid waste

Treatment of waste water containing metal cyan complex ion

道夫二川