摘要:
Pour pouvoir fournir des granulés de combustibles solides à des petits consommateurs, en particulier à des ménages, les granulés sont chargés dans un entrepôt central (1) dans une citerne (3) d'un camion (2) subdivisée en récipients individuels (4, 5) et sont transportés chez le consommateur. Le combustible est transféré pneumatiquement dans un petit entrepôt approprié (13) qui comprend un silo à granulés combustibles (14) et un silo à cendres (15). Après avoir vidé le récipient (5), les cendres sont amenées pneumatiquement du silo à cendres (15) vers le récipient (5) qui vient d'être vidé de façon que les cendres soient évacuées par le même camion (2). Un réservoir (52), approvisionné pneumatiquement à partir du silo à granulés (13), alimente directement le foyer (53). Les cendres accumulées dans le cendrier (55) du foyer (53), sont évacuées pneumatiquement dans un dépôt intermédiaire (23) duquel elles sont aspirées dans le camion de transport (2).
摘要:
A method for recovering high-grade, preferably sulphur-free fuel from bituminous or pyrobituminous mineral-fuel materials, such as coal, oil shale and alum shale, said method comprising finely-dividing the raw material and dividing said material into at least one fuel concentrate and a residual product which is bound to a durable agglomerate form by means of a binder. The method is characterized in that the raw material, subsequent to finely-dividing the same to a sufficient particle size physically, is divided into a high-grade, preferably sulphur-free fuel concentrate containing a given quantity of ash-forming minerals adjusted relative to the content of ash-forming minerals of the raw material, and into a residual product comprising substantial ash-forming minerals. A binder for hydraulically binding the residual product to a durable agglomerate is produced from the fuel concentrate by combusting the same while using the fuel content of said concentrate.
摘要:
Emissions of mercury, NOx, and/or SOx are reduced by enzyme treating coal before combustion, optionally with further treatment of the coal with certain non-bromine containing powder sorbents. y using the steps together, mercury can be reduced by 40% or more, and NOx by 20% or more. Advantageously, no bromine is introduced with the remediation steps.
摘要:
An object of the invention is to provide a method for controlling an NOx concentration in an exhaust gas in a combustion facility that uses a pulverized coal, which can easily control the NOx concentration in the exhaust gas to be discharged from a fuel facility that uses the pulverized coal as the fuel to or below a regulation value according to the Air Pollution Control Law and the like, and can also reduce an amount of a denitrifying agent or the like to be used, which is necessary for the control, by controlling the NOx concentration on the basis of the properties of the pulverized coal beforehand. The invention further includes: measuring a reaction velocity of each of chars corresponding to a plurality of types of pulverized coals beforehand; determining a relationship between the NOx concentration in the exhaust gas and the reaction velocity in advance; blending the plurality of the types of the pulverized coals so that the reaction velocity of the char becomes such a value as to correspond to a target NOx concentration or below, on the basis of the relationship; and supplying the blended pulverized coal to the combustion facility as the fuel of the combustion facility.
摘要:
Method for monitoring, sampling and control of a plant for producing wood pellets. The plant preferably comprises at least, one chip dryer, one hammer mill, one dosing device for additives, one mixing device, one humidity adjusting device, one dosing screw for a pellet press, one pellet press, and a pellet cooling device and is characterized by that the sampling is done on the wood pellets, and that sampling, control measurement of the sample regarding predefined control parameters, evaluation of the test results, possible adjustment of appropriate control parameter based on the test results, is performed according to predetermined frequency and fully automated during operation of the plant, to control the quality level of the wood pellets.
摘要:
Provided is a carbon fuel pneumatic dryer in which synthesis gas generated in a reactor is fed and cooled, including: a feeding part formed as a narrow pipe, via which synthesis gas and carbon fuel are fed; a drying part formed as a pipe having a larger diameter than the feeding part, in which the hot synthesis gas fed via the feeding part is cooled and the moisture content of the carbon fuel is lowered; and a conveying part formed as a pipe having a smaller diameter than the drying part such that the flow velocity of the synthesis gas and the carbon fuel having passed the drying part is increased, wherein the conveying part includes a bend so that the flow direction of the synthesis gas and the carbon fuel is changed.
摘要:
Die Verbrennungsanlage umfasst eine Feuerungsanla.ge (1), eine Trocknungsanlage (4) mit einem Bandtrockner (5) und einem Rotortrockner (7) sowie eine Materialaufgabe (3), welche über die Trocknungsanlage (4) mit der Feuerungsanlage (1) verbunden ist. Eine Heissgasführung verbindet eine Luftzuführung (24) über den Rotortrockner (7) und den Bandtrockner (5) mit einem Kamin (22). In Strörriungsrichtung des Heissgases vor der Trocknungsanlage (4) mündet eine von der Feuerungsanlage (1) ausgehende Rauchgasleitung (14) in dieselbe. Dies ermöglicht die Herstellung eines Rauchgas-Luft-Gemisches als Heissgas mit einer gewünschten. Temperatur. In der Trocknungsanlage (4) gibt dasselbe Wärme an das Material ab und unterstützt dadurch die Trocknung desselben. Dabei durchströmt das Heissgas im Bandtrockner (5) ein oberes Trum eines Siebbandes (8) und eine auf diesem liegende Materialschicht, wobei es zugleich gefiltert und entstaubt wird.
摘要:
A system includes a solid feed pump 10 having a housing, a rotor disposed in the housing, a curved passage 33 disposed between the rotor and the housing, a solid feed inlet 14 coupled to the curved passage, and a solid feed outlet 16 coupled to the curved passage. Also, a solids packing device is coupled to the solid feed inlet of the solid feed pump. The solids packing device includes a first channel configured to receive a solid feed with a first range of sizes, a second channel configured to receive transport assisting particles (TAP) with a second range of sizes. The first range is different from the second range. A third channel is configured to receive and mix the solid feed and the TAP to provide a solid feed-TAP mixture with the TAP filling interspatial spaces between the solid feed. The third channel is coupled to the solid feed inlet.
摘要:
Biomass is quickly becoming an important feedstock for energy generation in power plants. Due to their composition and nature, certain biomass fuels contribute to slagging, fouling, and corrosion. This invention provides a novel method of reducing or suppressing slag deposition and/or cleaning deposited slag in energy production processes in which potassium-containing solid fuels are combusted. Besides acting as a slag suppressant, further advantages of this invention are that the additive has no detrimental side-effects on capital equipment, increases slag friability, decreases slag fouling rate, reduces heat transfer corrosion as well as increasing the lifetime of the selective catalytic reduction catalyst.