Abstract:
A system for digesting biodigestible feed that preferably includes the steps of comminuting the feed, introducing feed, an oxygen-containing gas, an accelerant, and bacteria into a digestion zone, the bacteria being suitable for digesting the feed under aerobic, anaerobic, and anoxic conditions. The contents of the digestion zone can be changed from aerobic operation to either anoxic or anaerobic operation, or vice versa, without changing the bacteria in the digestion zone.
Abstract:
A sustainable closed loop system with zero waste for cogeneration of electric and thermal energy using woodfuel from a closeby energy plantation of quick growing trees such as Gliricidia Sepium. In addition to the energy plantation sub-system, the system includes a biomass fuel preparing sub-system and a steam and power generation sub-system for use with a biological wastewater treatment sub-system. No chemicals are used for wastewater treatment.
Abstract:
A glycerin burning system having a specialized atomizing burner capable of combusting a continuous feed of crude or pure glycerin. The burner preferably includes an impingement nozzle. The nozzle has an internal distributor which mixes two fluid feed streams (glycerin and air) and expels the fluid through an orifice. The distributor has channels which cause the air to swirl before mixing with the glycerin. An impingement pin is provided outside the orifice. The rapidly ejected glycerin/air mixture strikes a target surface on the impingement pin which transforms the mixture into a fine mist having a reduced velocity. The nozzle is located on the central axis of a turbulator which surrounds the atomized spray with rapidly revolving air. An outlet choke is provided on the combustion chamber to limit the speed of the flow so that steady combustion is maintained.
Abstract:
An apparatus for treating waste material that comprises four major cooperating subsystems, namely a pyrolytic converter (24), a two-stage thermal oxidizer (26), a steam generator (28) and a steam turbine (30) driven by steam generated by the steam generator. In operation, the pyrolytic converter is uniquely heated without any flame impinging on the reactor component and the waste material to be pyrolyzed is transported through the reaction chamber of the pyrolytic converter by a pair of longitudinally extending, side-by-side material transporting mechanisms (42, 43).
Abstract:
Process for destroying organic matter, in which said organic matter in ground form is introduced into a reactor and subjected to flameless combustion at a temperature of 240 to 400° C. under a pressure of 100 to 300 bar, in the presence of an oxygen-containing oxidizer for at least 20 minutes, while stirring the medium, and process for generating energy, in which the energy generated by the combustion is furthermore recovered.
Abstract:
A system and method of recycling non-hazardous waste materials is provided, wherein the method first comprises reducing the size of said non-hazardous waste materials. The method further includes incinerating the non-hazardous waste material within an incineration unit having at least one hearth and a flue gas stack, and transferring the non-hazardous waste liquids and the water to a storage tank. The method further comprises providing a clean water source to a steam generation unit, wherein the steam generation unit receives heated flue gas from the incineration unit, and operating the steam generation unit to produce steam. The steam is directed through one or more heating coils within the storage tank and transfers heat from the steam to the storage tank. Additionally, the non-hazardous waste liquids and water can be recirculated through an evaporator to progressively remove undesired substances from the non-hazardous waste liquid and water, and a first portion of the non-hazardous waste liquid and water can be redirected to the incineration unit to control temperature within the incineration unit. Finally, steam and undesired substances from the evaporator can be redirected to the flue gas stack to flash off undesired substances.
Abstract:
Process for solid waste treatment, and particularly municipal solid waste, with recovery of the thermal energy, which is based on the general pyrolysis process modified in order to improve, on the one hand, the energy yield and, on the other, to reduce the quantity of unusable solid residues to be sent to the waste disposal, the unusable solid waste being limited to 10-15% of the total weight of the initial residue. The process and relative plant include a boosted treatment of the incoming waste, with a preliminary separation into three solid fractions, the first one of which is separately subjected to a preliminary drying step and the third one undergoes further shredding. The process and relative plant also include a section for recovering energy from the pyrolysis coke, wherein the latter is subjected to a thermochemical treatment with the production of a further quantity of synthesis gas.
Abstract:
A process to transform solid, low-level, radioactive waste produced from oil and gas production into a form that may be safely disposed of, such as by re-injection into geologic formations in the Earth.
Abstract:
A system for disposing of municipal solid waste provides commercially-available equipment that is modified to initially remove identifiable unwanted components from the waste, and then chop the waste into small pieces of a size suitable for handling, separation and combustion. The moisture content of the waste is reduced in a closed system by passing dry air through the waste in a confined space to absorb moisture and produce moist air, which is then dehumidified via refrigeration equipment. The dehumidified air is recycled through the waste repeatedly through the closed system until the water content has reached the predetermined amount. The waste is stored in a bunker for later use or is immediately combusted in a two-step process by first gasifying the dried waste to produce combustible syngas and then immediately or later combusting the gas in a gas turbine or other engine to produce electricity that is partly used to power the process and partly sold commercially.
Abstract:
A heat exchanger tube 41 includes: a first cover layer 44 provided on an outer side of a tube main body 42 to partly or completely cover a tube main body 42; and a second cover layer 45 provided on an outer side of the first cover layer 44 to partly or completely cover the first cover layer 44. The first cover layer 44 is formed by overlay-welding a material higher in ductility than the second cover layer 45 to the tube main body 42. The second cover layer 45 is formed by overlay-welding a material higher in hardness than the first cover layer 44 to the first cover layer 44.