Abstract:
Das Verfahren dient der Rückgewinnung von Phosphorprodukten aus biologischem Abfallmaterial. Um ein wirtschaftliches Verfahren zur Rückgewinnung von Phosphor zu ermöglichen, wird vorgeschlagen, biologische Abfallmaterialien mit einem Schüttgut aus alkalischem Material oder einem mit alkalischem Material versetzten Schüttgut zu vermischen. Die erzeugte Mischung wird in einen Ofen gegeben, in welchem unter reduktiven Gesamtbedingungen die kohlen- und Wasserstoffhaltigen Verbindungen der Abfallmaterialien zu Synthesegas umgewandelt werden, wobei am oberen Ende des Ofens das Synthesegas abgezogen und am unteren Ende des Ofens die Schüttung mit sauerstoffhaltigem Gas auf eine Temperatur von weniger als 500 °C abgekühlt und in wenigstens zwei Fraktionen getrennt wird, wobei die feinkörnigere Fraktion als phosphorhaltiger Wertstoff entnommen wird.
Abstract:
Mineral additive blend compositions and a method for operating a furnace are provided in order to avoid combustion problems such as agglomeration, deposition, corrosion and reducing emissions. A method for operating a furnace, such as a fluidized bed reactor, pulverized-fuel combustor, grate combustor includes introducing fuel and a mineral additive blend comprising a clay and a functional mineral into the furnace. The method further includes heating at least a portion of the inorganic compound-containing material and clay, such that at least a portion of the clay is at least partially calcined and the at least partially calcined clay and functional mineral adsorbs at least a portion of the inorganic volatile compounds present in the furnace and react with the ash produced during fuel combustion increasing its refractoriness. The method further includes removing at least a portion of the at least partially calcined clay and adsorbed inorganic compounds from the furnace.
Abstract:
A combustion process wherein a fuel, a comburent and component A) are fed to a combustor, component A) comprising low-melting salts and/or oxides having a melting temperature ≤ 1,450 K, the ratio by moles A' /(A" -A') ≥ 0.01, being: A' the sum by moles between the amount of metals, under the form of low-melting salts and/or low-melting oxides present in the component A) and the amount of metals under the form of the low-melting salts and/or low-melting oxides or their low-melting mixtures, contained in the fuel, A" is the sum of the amount of all the metals contained in the fuel and of those contained in component A), in which the combustor is isothermal type and flameless.
Abstract:
Plume is mitigated by targeting treatment chemicals to locations in a furnace, which are connected with plume opacity. The effectiveness of targeted in furnace injection, in fuel introduction and in furnace introduction of slag and/or corrosion and/or plume control chemicals are determined, as are the effectiveness of targeted in furnace injection, in fuel introduction and in furnace introduction of combustion catalysts. Then, the effectiveness of various combinations of the above treatments are determined, and a treatment regimen employing one or more of the above treatments is selected. Preferred treatment regimens will contain at least two and preferably three of the treatments. Chemical utilization and boiler maintenance can improved as LOI carbon, slagging and/or corrosion are also controlled.
Abstract:
Die Erfindung betrifft ein Verfahren zur energetischen Nutzung von Ersatzbrennstoffen, insbesondere Abfällen, welches eine Pyrolyse der Ersatzbrennstoffe umfasst. Es wird vorgeschlagen, dass der entstehende Pyrolysekoks in einer Feuerungsanlage (10) verfeuert wird, die von der Stelle (11) räumlich getrennt ist, an der die entstehenden Pyrolysegase verwertet werden. Ein weiterer Aspekt der Erfindung betrifft eine Pyrolyseanlage zur Pyrolyse von Ersatzbrennstoffen und zur Lieferung von Pyrolysegasen an einen Pyrolysegasverbraucher zur Verwertung der Pyrolysegase, wobei eine Feuerungsanlage (10) zum Verfeuern des entstehenden Pyrolysekoks vorgesehen ist, die vom Pyrolysegasverbraucher räumlich getrennt ist. Schliesslich betrifft die Erfindung eine Kombination aus einer derartigen Pyrolyseanlage und einer Feuerungsanlage (1) zur Verfeuerung der entstehenden Pyrolysegase, wobei eine von dieser Feuerungsanlage (1) räumlich getrennte, weitere, der Verbrennung des Pyrolysekoks dienende Feuerungsanlage (10) vorgesehen ist.
Abstract:
A method of incinerating waste liquid utilizing industrial combustion equipment, comprising the steps of examining a pre-application inspection item (171), a pre-application prerequisite item (172), and an application examination item (173) and performing a post-application operation item (174) and a post-application check item (175) to eliminate a dioxin producing environment, whereby dioxin can be prevented from occurring in the incinerating treatment of waste liquid utilizing the industrial combustion equipment.
Abstract:
The invention relates to a sludge treatment method, according to which additives are added to the sludge in order to improve draining of the sludge and to facilitate a thermal utilization or removal of the sludge. According to the invention, light-weight plastic materials and/or natural fibers are introduced into the sludge as the additives.
Abstract:
A method for treating a combustion ash of coal containing an ingredient derived from limestone by admixing it with water, characterized in that the combustion ash and the water to be admixed are controlled to have different temperatures; and a method for desulfurization characterized in that a desulfurizing agent obtained by a method wherein, in a treatment of a combustion ash from a dust collector by admixing it with water in a coal combustion boiler, the combustion ash and the water to be admixed are controlled to have different temperatures, is fed to a coal combustion furnace for recycling. The method exhibits a sulfurization performance, in the desulfurization of a coal combustion boiler, being superior to that of a conventional method using a substance obtained by hydrating a combustion ash with water or steam.