Abstract:
The present invention relates to a process for producing, heat, power and combustible gases from the solid wastes, such as sorted / unsorted municipal solid wastes, industrial wastes including waste water treatment plant sludge, leather industry residues, agricultural wastes etc., comprising the steps of feedstock preparation (4, 5, 7, 10, 11), gasification (12), syngas (known as leangas) cleaning up (17, 19, 21, 22), heat and power generation (28) and optionally valuable chemicals production.
Abstract:
The method aims at obtaining from waste and more particularly from municipal solid waste (MSW) the energy contained therein at the highest level for industrial use by means of natural technologies and with low environmental impact. The method, denoted by the acronym NEW (Natural Energy from Waste) operates through the following process phases: a) aerobic digestion of the putrescible biological part to produce stabilised waste which is easy to handle, b) separation of a fraction rich in materials with a high heat value, c) storage of the residue, rich in biodegradable and inert substances, compacted into appropriate geometrical shapes in bioreactors which can be activated and sealed, d) activation of the bioreactors with water and their service in time during anaerobic digestion to supply biogas to be used for the production of energy, e) bio-stabilisation and dehydration of the residual material of the anaerobic treatment with air, f) possible recovery of the materials produced in this way. In this way the energy contained in the waste, is extracted at the most refined level in the form of plastic, plastic/paper and methane for energy uses with maximum yield and reduced production of ash, and the end material leaving the bioreactors is fully exhausted of its energy content and inertised.
Abstract:
The present invention relates apparatus and method for extracting flammable gases from wastes. Wastes are continuously separated into carbon and flammable gases with no oxygen by heating indirectly flammable gases-containing material including industrial wastes and city wastes. This extracting process consists of six steps, characterizing that extract only flammable gases produced in heat degradation step not to inflow any gases. The present invention has superior effect in reuse of resource and conservation of environment.
Abstract:
A garbage incinerating system comprises a pretreatment apparatus (1) and an incineration fusing apparatus (2). The incineration fusing apparatus (2) includes an incineration chamber (3) and a fusing chamber (5) that are integrally formed with a partition (7) therebetween so as to enable continuously transferring unburnt remanants. Particles pulverized in the pretreatment apparatus (1) are fed as a fuel to a powder burner (4) for fusion in the fusing chamber (5). Accordingly, a heat source for fusion is obtained from garbage, and unburnt remanants in a non-cooled condition directly from the incineration chamber (3) is heated and fused, whereby it is possible to efficiently treat garbage at low cost.
Abstract:
Es wird eine Zerkleinerungsvorrichtung (20) zum Verarbeiten von im Wesentlichen halmförmiger Biomasse, insbesondere Strohballen, beschrieben. Die Zerkleinerungsvorrichtung umfasst mehrere Schneckenwellen (22a, 22b, 22c, 22d) mit jeweils einer Schneckenwendel, entlang deren Umfang eine Vielzahl von Schneidmessern in Umfangsrichtung abstehen. Ferner umfasst die Zerkleinerungsvorrichtung (20) ein Lochsieb mit einer Vielzahl von Löchern. Dabei sind die Schneckenwellen (22a, 22b, 22c, 22d) derart in einem Rahmen (24) angeordnet, dass die Schneckenwellen (22a, 22b, 22c, 22d) im Betrieb Stroh aus einem der Zerkleinerungsvorrichtung (20) zugeführten Strohballen herausziehen, in einen Verarbeitungsraum befördern, der durch die Schneckenwellen (22a, 22b, 22c, 22d), den Rahmen (24) und das Lochsieb definiert wird, und das Stroh in dem Verarbeitungsraum so lange zerkleinern, bis dieses durch die Löcher des Lochsiebs abgeführt werden kann.
Abstract:
The method according to the invention comprises the steps of mechanically dehydrating the stabilized sewage sludge; mixing agricultural waste material to the mechanically dehydrated sewage sludge; drying the mixture thus obtained; adding municipal waste material to said mixture in an amount of 30-35%; homogenizing the mixture; feeding the homogenized mixture into a pyrolysis furnace in a continuous mode under control; and gasifying it in the furnace. The pyrolysis furnace used in the method comprises a furnace body, a fluid bed formed in the furnace body and means for feeding air and the material to be gasified as a secondary fuel material, wherein said means for feeding the air and the secondary fuel material comprise at least one rotatory burner arranged circumferentially in the upper part of the furnace, said bumer(s) being adapted to tilt around a horizontal axis.
Abstract:
A system for disposing of municipal solid waste (10) provides commercially-available equipment that is modified to initially remove identifiable unwanted components from the waste (12), and then chop the waste into small pieces (16) of a size suitable for handling and combustion. The moisture content of the waste is reduced in a closed system (20) by passing dry air through the waste in a confined space (30) to absorb moisture and produce moist air, which is then dehumidified via refrigeration equipment (34). The dehumidified air is recycled (30, 40) through the waste repeatedly through the closed system (20) until the water content has reached the predetermined amount. The waste is stored in a bunker (41) for later burning, or is immediately burned in a furnace (24) to produce heat that is used to produce steam (50), which drives a generator (26) to produce electricity (52) that is partly used to power the process and partly sold commercially.