Disclosed is a system and method for the combustion of biomass material employing a swirling fluidized bed combustion (SFBC) chamber, and preferably a second stage combustion carried out in a cyclone separator. In the combustion chamber, primary air is introduced from a bottom air box that fluidizes the bed material and fuel, and staged secondary air is introduced in the tangential direction and at varied vertical positions in the combustion chamber so as to cause the materials in the combustion chamber (i.e., the mixture of air and particles) to swirl. The secondary air injection can have a significant effect on the air-fuel particle flow in the combustion chamber, and more particularly strengthens the swirling flow, promotes axial recirculation, increases particle mass fluxes in the combustion chamber, and retains more fuel particles in the combustion chamber. This process increases the residence time of the particle flow. The turbulent flow of the fuel particles and air is well mixed and mostly burned in the combustion chamber, with any unburned waste and particles being directed to the cyclone separator, where such unburned waste and particles are burned completely, and flying ash is divided and collected in a container connected to the cyclone separator, while dioxin production is significantly minimized if not altogether eliminated. The system exhaust is directed to a pollutant control unit and heat exchanger, where the captured heat may be put to useful work.

A recuperative burner (20) for introducing a process air (A) to be treated into the combustion space (15) of the combustion chamber of a thermal process air treatment device (10) and for discharging the flue gas (E) from the combustion space (15) comprises a heat transfer sector (40) having an internal space (46) in which a plurality of process air tubes (43) for introducing the process air (A) to the combustion space (15) extend. It is proposed to equip the recuperative burner (20) with at least one flue gas tube (60) for discharging the flue gas (E) from the combustion space (15), comprising an open input opening (61) in the combustion space (15) and passing into the heat transfer sector (40) and comprising, in the section inside the heat transfer sector (40), at least one tube wall opening (63) for introducing the flue gas (E) into the internal space (46) of the heat transfer sector (40), through which the process air tubes (43) pass, for the purpose of heat transfer from the discharging flue gas (E) to the inflowing process air (A).

A system and method to prevent an oxidizer overheating using cold side bypass for a volatile organic compounds (VOCs) treatment system with a series rotor are described, which is mainly used in the organic waste air treatment system. The system is equipped with a thermal oxidizer (to), a first heat exchanger, a second heat exchanger, a third heat exchanger, a first cold-side transporting pipeline, a first adsorption rotor, a second adsorption rotor, and a chimney. A cold-side proportional damper is installed between the first desorption-treated air pipeline and the first cold-side transporting pipeline, or it is installed on the first desorption-treated air pipeline. When the VOCs concentration becomes higher, the cold-side proportional damper can regulate the airflow to adjust the heat-recovery amount or concentration, when treating the organic waste air, it can prevent the thermal oxidizer from being overheated due to high oxidizer temperature, and protect from thermal oxidizer shut-down.

A low nitrogen coupling combustion system for the disposal of waste stink gas and solid waste, including a waste pit, at least one stink gas incineration equipment and a waste incinerator, wherein the waste pit is equipped with stink gas outlets and the stink gas incineration equipment is provided with an incineration chamber for burning stink gas, as well as a stink gas inlet, a fuel inlet and a burned stink gas outlet which are connected with the incineration chamber; the stink gas inlet is connected with the stink gas outlet of the waste pit through a stink gas delivery pipe, and the fuel inlet is connected with a fuel source through a fuel delivery pipe; the burned stink gas outlet is connected with a combustion-supporting air inlet of the waste incinerator through a flue gas discharge pipe.

A multi-stage product gas generation system converts a carbonaceous material, such as municipal solid waste, into a product gas which may subsequently be converted into a liquid fuel or other material. One or more reactors containing bed material may be used to conduct reactions to effect the conversions. Unreacted inert feedstock contaminants present in the carbonaceous material may be separated from bed material using a portion of the product gas. A heat transfer medium collecting heat from a reaction in one stage may be applied as a reactant input in another, earlier stage.

A ground supported power boiler is described combining a refractory lined and insulated conical floor; an insulated cylindrical combustion chamber; a cylindrical furnace with water tube wall; a rectangular convective section; a single vertical steam drum; tangential injection of the fuel and combustion air; means for fluidizing the fuel bed; means for selectively stripping particulates from the flue gases; multi-stage particulate stripping and filtering from flue gases, means for using the walls of steam drum as steam/water droplet separator, means for recirculating and capturing heat from the flue gases; means for pressurizing the interior of the boiler above atmospheric pressure; means for heating and drying fuel prior to feeding the fuel to the boiler; means for creating hydrogen shift reaction; means for eliminating any need for sootblowing; and designed to not require the use of an induced draft fan.

The present invention relates to reaction equipment for the treatment of organic and/or inorganic waste of refineries or petrochemical plants comprising: a drying and pyrolysis device (4) which rotates around its longitudinal, tilted rotation axis (A), a gasification device (6) which rotates around its longitudinal, horizontal rotation axis (B), a combustion device (14) comprising a burner (13) having a longitudinal horizontal axis (C), at least one settling chamber (15) for the collection of intermediate solid residues and the accumulation of intermediate gaseous reaction products, at least one outlet duct of the gaseous end-products (16), at least one outlet duct of the solid end-products (7), and at least one inlet duct of the feedstock (2) said combustion device (14), drying and pyrolysis device (4), gasification device (6) are physically separated and positioned on three different levels, the longitudinal rotation axis (A) of the drying and pyrolysis device (4) is tilted with respect to both the longitudinal rotation axis (B) of the gasification device (6) and also with respect to the longitudinal axis (C) of the combustion device (14), the longitudinal rotation axis (B) of the gasification device (6) is parallel to the longitudinal axis (C) of the combustion device (14), the combustion device (14) is in fluid communication with the drying and pyrolysis device (4), the drying and pyrolysis device (4) comprises, in its interior, a first indirect heat exchange device (3) in which the combustion fumes coming from the combustion device (14) flow, at least one settling chamber (15) in fluid communication with said drying and pyrolysis device (4) and with said gasification device (6) and with said combustion device (14), conveying means (5) are positioned in the settling chamber (15) and put the drying and pyrolysis device (4) in fluid communication with the gasification device, it comprises a second heat exchange device (12) in fluid communication with the first indirect heat exchange device (3) and the combustion device (14), it comprises means for the suction of the intermediate gaseous reaction products, said means being positioned in the settling chamber (15).

A multi-stage product gas generation system converts a carbonaceous material, such as municipal solid waste, into a product gas which may subsequently be converted into a liquid fuel or other material. One or more reactors containing bed material may be used to conduct reactions to effect the conversions. Unreacted inert feedstock contaminants present in the carbonaceous material may be separated from bed material using a portion of the product gas. A heat transfer medium collecting heat from a reaction in one stage may be applied as a reactant input in another, earlier stage.

A treatment apparatus for treating an effluent gas comprising:includes a combustion chamber; a burner; an inlet for receiving secondary combustion air; an exhaust gas outlet for outputting exhaust gases from the combustion chamber; and a heat exchanger. The heat exchanger is configured to exchange heat between a first fluid and a second fluid flowing through respective first and second fluid flow paths. The first fluid flow path is connected to the inlet such that the secondary combustion air flows from the inlet into the first fluid flow path and the second fluid flow path is connected to the outlet such that the exhaust gases received at the outlet flow into the second fluid flow path. The heat exchanger comprises a fluid flow communication path for providing a path for flow of a portion of the exhaust gases from the second fluid into the first fluid; and at least one inlet aperture for inputting the first fluid to the combustion chamber.

A crematorium (10) comprising sequentially interconnected primary (20), secondary (28), plenum (22) and tertiary (24) chambers, the a primary chamber (20) being a combustion chamber shaped and sized to accommodate a human body and comprising one or more burners (30) adapted, in use, to ignite, and sustain the combustion of, a human body placed inside the primary combustion chamber (20); the secondary (28) and tertiary (24) chambers each comprising one or more additional burners (32, 34) adapted, in use, to re-heat flue gasses expelled from the primary chamber (20), and wherein the plenum chamber (22) is located adjacent the primary chamber (20) such that re-heated flue gasses expelled from the secondary chamber (28) heat at least one wall (50) of the primary chamber (20).