摘要:
The present disclosure provides an apparatus for manufacturing a silicon substrate for solar cells using continuous casting, which can improve quality, productivity and energy conversion efficiency of the silicon substrate. The apparatus includes a crucible unit configured to receive raw silicon and having a discharge port, a heating unit provided to an outer wall and an external bottom surface of the crucible unit and heating the crucible unit to form molten silicon, a casting unit casting the molten silicon into a silicon substrate, a cooling unit rapidly cooling the silicon substrate, and a transfer unit disposed at one end of the cooling unit and transferring the silicon substrate. The casting unit includes a casting unit body having a casting space defined therein to be horizontally connected to the discharge port, and an assistant heating mechanism that preheats the casting unit body to control a solidification temperature of the silicon substrate.
摘要:
The present invention uses the principles of electrochemical ion absorption (charging) and ion desorption (discharge), and relates to a continuous flow-electrode system, a high-capacity energy storage system, and a water treatment method using the same, in which high-capacity electric energy is stored as electrode materials of a slurry phase and electrolytes simultaneously flow in a successive manner within a fine flow channel structure formed on an electrode. More specifically, the present invention relates to a continuous flow-electrode system, an energy storage system, and a water treatment method, wherein electrode active materials consecutively flow in a slurry state whereby a high capacity is easily obtained without enlarging or stacking electrodes.
摘要:
A device for a solid oxide fuel cell or a solid oxide electrolysis cell includes an integral one-piece construction of a current collector and a manifold. The device eliminates the need for a brazing or thermal bonding process for joining the manifold with the current collector, and thus makes it possible to prevent breakdown of the junction formed between the manifold and the current collector, which can lead to gas leakage through the junction, and thus can be used for a long period of time.
摘要:
Disclosed is a dry carbon dioxide capturing device which can improve sorption efficiency by supplying sorbent for absorbing carbon dioxide or exhaust gas containing carbon dioxide to a recovery reactor in multistages at various heights. The dry carbon dioxide (CO 2 ) capturing device with multistage supply structure comprises a recovery reactor 102 to recover CO 2 by contacting a solid sorbent with exhaust gas; a recovery cyclone 110 connected to the recovery reactor 102 to discharge a gas while separating the CO 2 -captured solid sorbent only; a regenerator 114 connected to the recovery cyclone 110 to receive the CO 2 -captured solid sorbent and separate CO 2 captured in the solid sorbent; and a pretreatment reactor 122 connected to the regenerator 114 for cooling the solid sorbent free from CO 2 wherein at least one of the exhaust gas supply line and the sorbent supply line has two or more arranged according to the height of the recovery reactor 102.
摘要:
Disclosed is a dry CO 2 capturing device with improved energy efficiency, which utilizes a difference in temperature between a regeneration operation of isolating CO 2 from an sorbent containing CO 2 absorbed therein and a pre-treatment operation of allowing H 2 O to be adsorbed to CO 2 . The dry carbon dioxide (CO 2 ) capturing device, includes a recovery reactor for recovering CO 2 , a recovery cyclone for discharging a gas while separating the CO 2 -captured solid sorbent only, a regenerator for receiving the CO 2 -captured solid sorbent and separating CO 2 captured in the solid sorbent, and a pre-treatment reactor for cooling the solid sorbent free from CO 2 , wherein a first heat exchanger is provided between the recovery cyclone and the regenerator to pass the CO 2 -captured solid sorbent therethrough, and a second heat exchanger is provided between the pre-treatment reactor and the regenerator to pass the solid sorbent free from CO 2 therethrough. The first and second heat exchanger include a first and second heat exchange jacket mounted thereon which are connected to each other in a closed loop state.
摘要:
The present invention relates to a method of manufacturing a cobalt metal foam catalyst including a metal foam coated with cobalt catalyst powder, a cobalt metal foam catalyst manufactured by the method, a thermal medium-circulated heat exchanger type reactor using the cobalt metal foam catalyst, and a method of producing liquid fuel by Fischer-Tropsch synthesis using the reactor. An object of the present invention is to provide a catalyst, which is used to obtain high liquid fuel productivity even at a low CO conversion ratio because the reaction temperature can be kept stable by controlling reaction heat with high efficiency in Fischer-Tropsch synthesis so that the mass transfer characteristics of a catalyst layer can be improved, and a method of manufacturing the catalyst, a reactor filled with the catalyst, and a method of producing liquid fuel using the reactor. The method of manufacturing a cobalt metal foam catalyst includes the steps of: surface-pretreating a metal foam by atomic layer deposition (ALD) using trimethylaluminum ((CH 3 ) 3 Al) and water to form an Al 2 O 3 thin film; preparing a cobalt catalyst slurry composed of a mixture of alumina sol, cobalt catalyst powder and isopropyl alcohol; surface-coating the surface-pretreated metal foam with the cobalt catalyst slurry by dip coating; and drying and calcinating the surface-pretreated metal foam coated with the cobalt catalyst slurry.
摘要:
The present invention provides a method of simultaneously producing ultrapure betulin and highly-pure betulinic acid a from bark of a birch tree, which is configured such that a crude extract including 70 ∼ 83% of betulin, 4 ∼ 8% of betulinic acid and polar pigment components are prepared from the bark (mainly outer bark) of a birch tree naturally growing in the northern hemisphere of 34° north latitude, such as Korea, China, Europe and the like, using a polar organic solvent, and highly-pure betulin included in this crude extract is crystallized using a mixed polar organic solvent to obtain a crystallized product, and then ultrapure betulin, having purity of 99.5% or more and highly-pure betulinic acid having purity of 95% or more are simultaneously produced from the crystallized product including highly-pure betulin as a major component.