The present invention relates to system and method for reducing the volume of sewage sludge, the system comprises a dryer adapted to receive the sewage sludge and a drying gas and produce a mixture comprising a dried sludge component and a gaseous component therefrom. The system further comprises a solid-gas separator for separating the dried sludge component from the gaseous component. The system further comprises a hot air generator connected to said solid-gas separator and the dryer, and adapted to receive a feed gas and at least a portion of said dried sludge component from the solid-gas separator to combust the dried sludge component to produce a heat of combustion and convert, using the heat of combustion, the feed gas to drying gas for supply to the dryer.

Systems and processes provide for a thermal process to transform sludge (and a variety of other natural waste materials) into electricity. Dewatered sludge and other materials containing a high amount of latent energy are dried into a powdered biofuel using a drying gas produced in the system. The drying gas is recirculated and is heated by the biofuel produced in the system, waste heat (from turbines or internal combustion engines), gas (including natural gas or digester gas) and/or oil. The biofuel is combusted in a boiler system that utilizes a burner operable to burn biofuel and produce heat utilized in a series of heat exchangers that heat the recirculating drying air and steam that powers the turbines for electricity production.

An energy-saving sludge drying disposal system is provided. The disposal system includes a vacuum heating unit, an incinerating unit, a vacuum cooling unit and a molten salt heat exchanging unit. The vacuum cooling unit includes a high-temperature gas inlet, a condensed water outlet, a low-temperature gas outlet, a low-temperature liquid inlet and a medium-temperature liquid outlet. The high-temperature gas inlet of the vacuum cooling unit is connected with the vacuum heating unit. The incinerating unit includes an incinerator, an incineration gas inlet, a combustion-supporting gas inlet, a flue gas discharge outlet, a cold molten salt inlet and a hot molten salt outlet. The incineration gas inlet is connected with the low-temperature gas outlet of the vacuum cooling unit. The molten salt heat exchanging unit includes a cold molten salt outlet, a hot molten salt inlet, a medium-temperature liquid inlet and a high-temperature liquid outlet.

An energy-saving sludge drying disposal system is provided. The disposal system includes a vacuum heating unit, an incinerating unit, a vacuum cooling unit and a molten salt heat exchanging unit. The vacuum cooling unit includes a high-temperature gas inlet, a condensed water outlet, a low-temperature gas outlet, a low-temperature liquid inlet and a medium-temperature liquid outlet. The high-temperature gas inlet of the vacuum cooling unit is connected with the vacuum heating unit. The incinerating unit includes an incinerator, an incineration gas inlet, a combustion-supporting gas inlet, a flue gas discharge outlet, a cold molten salt inlet and a hot molten salt outlet. The incineration gas inlet is connected with the low-temperature gas outlet of the vacuum cooling unit. The molten salt heat exchanging unit includes a cold molten salt outlet, a hot molten salt inlet, a medium-temperature liquid inlet and a high-temperature liquid outlet.

Fuel mixed in water is combusted in a reactor having an internal operating pressure and temperature greater than 3200 psi and greater than 374° C., where the combustion of the fuel is exothermic. Air and fuel are pressurized for introduction into the reactor to a pressure greater than the internal operating pressure using energy generated from the combustion of the fuel, and the pressurized air and the pressurized fuel are injected into the reactor. Pressurized water from the reactor is injected into a drive water column that is partially filled with water to increase a pressure of the drive water column, and water at a temperature less than 100° C. is injected into the reactor to replace water from the reactor that is injected into the drive water column. Pressurized water from the drive water column is used to drive a hydroelectric drive system to produce electrical power.

Polygeneration plant, fueled with biomass from various sources and with rated power included between 30 kW and 200 kW, including a plurality of specialised modules, the modules being at least one first module for loading and drying the biomass; at least one second gasification module suitable for producing the syngas starting from the biomass; at least one third module for automating and controlling the polygeneration process associated to the plant. The polygeneration plant includes at least one fourth module including at least one fuel cell, the fuel cell being of the SOFC or MCFC, PEMFC, PAFC, AFC type.

A membrane method processing system and process for a high-concentration salt-containing organic waste liquid incineration exhaust gas is described. The system consists essentially of a waste liquid incinerator (I), a gas-solid separator (II), a heat exchanger (III), an air blower (IV), an anti-caking agent storage tank (V), a membrane method dust cleaner (VI), an induced draft fan (VII), a check valve (VIII), and a desulfurization tower (IX). The present invention introduces the dust collecting membrane into the tail gas treatment system and utilizes the small pore size and high porosity of the dust collecting membrane to prevent inorganic salt particles from entering the internal of the filter material and agglomerating there. When the humidity of the gas entering the dust collector increases during the dust removing process, the anti-caking agent is also introduced into the tail gas treatment system to change the surface structure of the inorganic salt crystal to prevent the crystal from agglomeration.

A method and apparatus for thermal processing of contaminated liquids is disclosed. The system employs an efficient and robust pulse jet burner as its basic energy source. This energy is then used to generate steam which may subsequently be used for a variety of processing and purification steps. A multiple-chamber approach is used: a burner chamber contains the pulse jet burner, a neighboring heat exchanger chamber uses this heat energy to initiate the purification process which started in a third neighboring coagulator chamber into which the contaminated fluids are initially introduced to the system. Combustible liquids which are separated from the contaminated fluids may be used to power the pulse jet for self-contained operation. High temperature flue gases from the pulse jet pass through a supercharger box and then into a vortex dryer which may have a secondary vortex dryer for initial drying of wet solid fuels.

Disclosed is a system and method for the recycling of waste composite feed materials such as printed circuit boards (PCBs), batteries, catalysts, plastic, plastic composites such as food packaging materials, for example Tetra Pak, mattresses, compact disks (CDs, DVDs), automobile shredder residue (ASR), electric cable wastes, liquid display panels, mobile phones of various sizes or combinations of the above using a new pyrolysis system and method.

Implementations of a non-polluting biomass processor, and manufactured processor components are disclosed which at least partly address the local technical problems of a municipality, business, and/or organization, to generate non-polluting emissions, while generating at least one, often two or more, product outputs from biomass feedstocks input into the biomass processor. Examples of the operations of the biomass processor and various combinations of its manufactured processor components are disclosed. The product outputs may include carbon char and/or activated carbon, both of which may be used to increase water retention in climates with hot, dry summers and/or used to remediate water pollution in water reservoirs.