Abstract:
The proposed method of reprocessing biogenic waste sediment involves heat treatment of a suspension of sediments (15) at a temperature of 150-220 DEG C and pressure of 0.5-3.0 mPa for 10-120 minutes; alkalization of the suspension thus treated to produce a pH of more than 10 (17); and subsequent treatment with an oxygen-containing gas (18) at a temperature of 150-220 DEG C and pressure of 1.5-5.0 mPa for between 20 and 180 minutes. Once the pressure has fallen to atmospheric pressure and the temperature has dropped below 100 DEG C, the reaction material is divided (2) into a liquid-phase organo-mineral complex and an insoluble sediment component. Treatment with oxygen-containing gas is carried out in a device for reprocessing biogenic waste sediments (gas lift apparatus) (18) which facilitates mass-exchange processes in three-phase systems (liquid-gas-solid). The insoluble sediment component contains heavy metal salts and organic substances chemically bonded to those salts and can be used as raw material in the production of construction materials. The liquid product is a solution of organo-mineral complex containing water-soluble salts of high-molecular carboxylic acids with the properties of humic substances. The organo-mineral complex can be used in various areas of technology and agriculture.
Abstract:
A process for thermochemically converting fluid or fluidisable compounds (charge), in particular organic or complex toxic compounds, into low-molecular organic or inorganic compounds, has a preliminary step, during which the energy required for the conversion reaction is generated, and at least one subsequent main step during which the conversion reaction takes place. In the preliminary step, the reaction partners that are subjected to an overpressure and form an exothermic mixture are completely mixed during a mixing phase without being able to react during the mixing phase. Only at the end of the mixing phase both reaction partners react with a high reaction speed and energy density that depend on the overpressure. During the main step of the process, a second mixture to be reacted that consists of the charge and of a reactive receives the energy required for the reaction by being mixed with the reaction products from the first partial reaction that are in a high temperature and pressure state.
Abstract:
A method for the chemical conversion of complex chemical structures in a supercritical medium is disclosed. One or more chemical structures (20) may be converted by means of a reduction reaction in a supercritical solvent (22). The method is useful for destroying hazardous products, processing industrial effluents and natural products, and altering molecular structures.
Abstract:
The present invention provides an experimental device and method for simulating dynamics of hydrocarbon generation and expulsion in geological process. The experimental device comprises a reaction system. The reaction system comprises a reactor having a sample chamber formed therein for placing a sample, a sample sleeve being arranged within the sample chamber for receiving the sample. The sample sleeve comprises a cylindrical body enclosing the sample in a circumferential direction, an outer side wall of the cylindrical body being in engagement with an inner side wall of the reactor, and the cylindrical body being perforated to form a channel for product circulation between an outer side wall of the sample and the inner side wall of the reactor.
Abstract:
Disclosed are a method of preparing conjugated diene and a device therefor. More particularly, disclosed a method of preparing conjugated diene, wherein generated gas including butadiene is cooled and then water discharged at a lower part is not directly treated as waste water and subjected to byproduct removal and steam-extraction to utilize converted steam, and an installation issue of an existing biological waste water disposal equipment due to an excessive amount of byproducts can be resolved, and a device therefor are disclosed.
Abstract:
A method of forming polycrystalline diamond includes encapsulating diamond particles, carbon monoxide, and carbon dioxide in a container. The encapsulated diamond particles, carbon monoxide, and carbon dioxide are subjected to a pressure of at least 4.5 GPa and a temperature of at least 1400° C. to form inter-granular bonds between the diamond particles. A cutting element includes polycrystalline diamond material comprising inter-bonded grains of diamond. The polycrystalline diamond material is substantially free of graphitic carbon and metallic compounds. The polycrystalline diamond material exhibits a density of at least about 3.49 g/cm3 and a modulus of at least about 1000 GPa. An earth-boring tool may include such a cutting element secured to a body.
Abstract:
Offenbart wird ein Verfahren zur Abtrennung von Phosphor aus Biomasse, insbesondere aus Klärschlamm, wobei zunächst eine hydrothermale Karbonisierung durchgeführt wird, dann der entstandene Kohleschlamm ohne eine vorausgehende Fest-Flüssigtrennung im pH-Wert abgesenkt wird, anschließend nur eine Fest-Flüssigtrennung zur Abscheidung der Flüssigphase vorgenommen wird und schließlich die Flüssigphase einer Phosphoreliminierung unterzogen wird. Sowie eine Vorrichtung, insbesondere zur Durchführung des vorbeschriebenen Verfahrens umfassend ein durchbeaufschlagtes Reaktionsvolumen zur Durchführung der hydrothermalen Karbonisierung 1 ein Reaktionsgefäß mit Rührwerk und Säurezufuhr 2, 3 in direkter Verbindung mit 1 oder mit einer Einrichtung zur gravimetrischen Eindickung, eine Fest-Flüssig-Trenneinrichtung 4 ein Behältnis zur Phosphoreliminierung durch Abscheidung mittels Fällung / Kristallisation 7 bzw. durch Wasserverdampfung einen Auslass für den phosphorhaltigen Feststoff 8 / das phosphorhaltige wässrige Konzentrat, ggf. unter Weiterverarbeitung durch Entwässerung und/oder Trocknung und/oder Granulierung,einen Auslass für Kohle 5.
Abstract:
In a method for the continuous precipitation of lignin from black liquor black liquor is provided so as to flow as a pressurized flow in a reactor (2) with a dwell time of less than 300s,—an acidifying agent selected from the group of carbon dioxide, acid and their combinations is led to the flow at one or more feeding sites (2a) to lower the pH of black liquor,—the pH is allowed to decrease by the effect of the acidifying agent in the pressurized flow to the precipitation point of lignin, the pressure of the pressurized flow is abruptly released, and lignin particles are separated from black liquor.
Abstract:
A system (1) for producing a raw material for a recycled resin composition, comprising: - a decomposition reaction apparatus (2) for decomposing a thermosetting resin, comprising: an introduction section (222) for introducing a resin composition containing the thermosetting resin and a solvent containing a monomer component of the thermosetting resin or a derivative of the monomer component; a decomposition reaction section (221) for obtaining a first treated recovery product containing a recycled resin formed of the thermosetting resin having a reduced molecular weight, a solid residue and a low-boiling-point component containing the solvent, by heating and pressurizing the resin composition and the solvent and bringing the solvent into a supercritical state or a subcritical state, and the decomposition reaction section (221) being comprised of a tube-type reactor (22) which is adapted to perform the decomposition treatment with the resin composition and the solvent, and a discharge section (223) for discharging the first treated recovery product, wherein the decomposition reaction apparatus (2) is adapted to continuously perform the introduction of the resin composition and the solvent into the introduction section (222), the decomposition treatment of the thermosetting resin in the decomposition reaction section (221) and the discharge of the first treated recovery product from the discharge section (223), a first separating unit (51) serving as a solid-liquid separator, wherein the first separating unit (51) is designed for separating and removing the solid residue from the first treated recovery product, a second separating unit (52) serving as a gas-liquid separator, wherein the second separating unit (52) is designed for separating and extracting the recycled resin with the reduced molecular weight as well as the low-boiling-point component containing the solvent from the first treated recovery product from which the solid residue has been removed, wherein the first separating unit (51) and the second separating unit (52) are connected to the discharge section (223) of the decomposition reaction apparatus (2) in the named sequence.