摘要:
The invention relates to an apparatus for treating aluminum comprising at least one device for mixing (20, 22, 30. 40) aluminum ore with limestone and sodium and/or potassium carbonate to obtain a mixture and a calcination reactor (60) for producing the calcine. A circulating fluidized bed reactor (50) is arranged between the device for mixing(20, 22, 30. 40) and the calcination reactor (60) and in which the mixture is pre-calcined.
摘要:
Изобретение относится к неорганической химии и к химической технологии, которую применяют для получения смеси из ультрадисперсных и нанодисперсных порошков оксида и гидроксида алюминия, которую используют в процессе дезактивации жидких отходов атомных электростанций (АЭС), содержащих ионы цезия-137 ( 137 Cs) и/или стронция-90 ( 90 Sr) путем коагулирования последних. С., при котором полость сосуда- реактора заполняют водой, размещают в полости сосуда-реактора слой металлических гранул и выполняют их электроэрозионное диспергирование (ЭЭД) в воде, для чего воздействуют на слой гранул электрическими импульсами через электроды, одни концы которых размещают в полости реактора с возможностью касания металлических гранул, а вторые концы подключают к соответствующим выходам генератора импульсов, постепенно разрушают гранулы под действием искровых разрядов между ними до образования мелкодисперсного порошка - коагулянта, накапливаемого на дне реактора, а , в соответствии с изобретением, полость реактора заполняют предварительно очищенной водой и выполняют ЭЭД в воде гранул металлического алюминия через электроды, изготовленные из металлического алюминия, а накопленный на дне реактора коагулянт в виде смеси из ультрадисперсных и нанодисперсных порошков оксида и гидроксидов алюминия извлекают из сосуда- реактора и используют в качестве коагулянтов при дезактивации жидких радиоактивных отходов атомных электростанций, содержащих ионы цезия- 137 ( 137 Cs) и/или стронция-90 ( 90 Sr). В основу изобретения поставлена задача создания такого С себестоимость которого была бы меньше, а эффективность выше, чем у прототипа, за счет создания условий для получения коагулянта заранее определенного состава и в количестве, достаточном для очистки требуемой порции (объема) жидких отходов АЭС за один цикл очистки путем применения для получения порошков, активность которых в отношении ионов цезия-137 ( 137 Cs) и стронция-90 ( 90 Sr) превышает активность порошков оксида и гидроксида алюминия, полученных традиционными методами.
摘要:
The present invention generally relates to systems and methods for pressure driven flow crystallization. In some embodiments, the system comprises a comprising a cavity and a mixing mechanism. In some embodiments, one or more inlets facilitate the transfer of one or more reagent streams to the cavity. In some such embodiments, the mixing mechanism mixes the first and second reagent streams such that a continuous crystallization and/or generation of a product (e.g., solid particles) in the fluid.
摘要:
The invention relates to a process for the production of thermoplastic moulding compounds, in particular ABS, wherein at least a first reagent (11) and a second reagent (12) of the thermoplastic moulding compounds are fed to a gear pump (10) which comprises a housing and at least a first gear wheel that is rotatable relative to the housing about a first axis, and a second gear wheel that is rotatable relative to the housing about a second axis, wherein a loop conduit (29) is provided, and wherein the reagents (11, 12) are pressed in a loop through the loop conduit (29) and passing the gear wheels, whereby the reagents (11, 12) are dispersed to form a dispersion (15) in the gear pump (10). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.
摘要:
The invention provides a method for dispersing particles within a reaction field, the method comprising confining the particles to the reaction field using a standing wave. The invention also provides a system for coating particles, the system comprising a reaction zone; a means for producing fluidized particles within the reaction zone; a fluid to produce a standing wave within the reaction zone; and a means for introducing coating moieties to the reaction zone. The invention also provides a method for coating particles, the method comprising fluidizing the particles, subjecting the particles to a standing wave; and contacting the subjected particles with a coating moiety.
摘要:
The invention relates to a process of alkylating aromatic hydrocarbons, and more particularly a process of making paraxylene by alkylation of benzene and/or toluene with methanol and/or dimethyl ether, and to an apparatus for carrying out said process, the improvement comprising staged injection of one of the reactants, with the stages separated by structured packing so as to minimize at least one of gas phase back-mixing, by-pass phenomena, and gas bubble size.
摘要:
The composite continuous countercurrent fluidized moving bed (FMB) and/or expanded moving bed (EMB) for carrying out processes such as recovery, purification or reaction of single or multiple component/s of interest, by contacting liquid phase containing the said component/s with the solid adsorbent in continuous countercurrent mode. In this composite fluidized moving bed and/or expanded moving bed system the net movement of the solids is against the liquid flowing in upward direction through the stages/columns, and sedimenting solids from the one stage/column are continuously fed to the top of the another stage/column placed below or alongside of previous stage/column, and also operating in fluidized/expanded bed mode, wherein its countercurrent contact with up flowing liquid is carried out. The system described herein consists of number of stages/column as per requirement of the process. The sedimenting adsorbent solids from the last fluidized bed or expanded bed stage/column are taken out continuously and fed back to the top of the first stage/column, through a feed hopper to which the adsorbent solids are transported by means of pump or liquid solid ejector, or any other suitable device. The feed hopper is suitably designed and operated, so as deliver solid adsorbents to the top of the first stage/column continuously in a controlled manner. The flow of solid adsorbent through the said solid downcomer tube/s is controlled using valves appropriate to afford control over the downward adsorbent flow. The FMB/EMB system can be used in processes for continuous recovery, purifications or reactions of various products.
摘要:
Provided is a catalyst converter for purifying exhaust gas and a method for manufacturing the catalyst converter, in which a heater is disposed between inner/outer monoliths, to thereby heighten a heat transfer efficiency and induce a uniform catalytic reaction, and to thereby enhance a processing performance, and minimize an electric power consumption and miniaturize a device. The catalyst converter includes: a heater having a winding portion which is wound so as to have a space therein and a pair of electric power terminals; inner and outer monoliths which are inserted in the inner and outer circumferential portions of the heater winding portion wherein each of the inner and outer monoliths includes a number of hollow cells on the surfaces of which catalysts have been coated and which are formed in the lengthy direction; and a housing in which a support assembly is assembled.
摘要:
Dispositif d'injection de fluides à l'intérieur d'un fluidifié rotatif ou les jets de fluides sont orientés dans le sens de la rotation du lit fluidifié et entourés d'au moins un déflecteur délimitant autour de ces jets espace généralement convergent puis divergent et en amont de ces jets passages par ou les particules en suspension dans le lit fluidifie rotatif peuvent pénétrer afin de se mélanger aux jets de fluides qui leur transfèrent une partie de leur énergie cinétique avant de sortir de cet espace.
摘要:
A slurry polymerization process wherein olefin monomer is fed to a continuous loop reactor at two or more points, allowing operation at higher and steadier monomer concentrations in the circulating slurry. A loop reactor apparatus has two or more monomer feeds and may have two or more catalyst feeds and/or two or more product take-offs, and each feed may have its own associated control scheme.