摘要:
A method and an apparatus for producing sodium borohydride that have excellent energy efficiency and production efficiency are provided. Using a production apparatus 20 comprising: a cylindrical reaction container 21; a cylindrical reaction portion 22 which is rotatably held in this reaction container 21 and in which sodium metaborate that is a raw material 1 and granular aluminum are housed together with a grinding medium 2; and a hydrogen introduction portion 23 for introducing hydrogen gas into the reaction portion 22 directly or via the reaction container 21, the sodium metaborate and the granular aluminum are reacted under a hydrogen atmosphere, while being rolled and ground with the grinding medium, to obtain sodium borohydride.
摘要:
The invention relates to a method for producing metal chloride M' + Cl " - , in which method metal carbonate (1) in solid form is reacted using phosgene, diphosgene and/or triphosgene (2) to form metal chloride M x+ Cl x - (1'), the metal M being selected from the group containing alkali metals, alkaline earth metals, Al and Zn, preferably Li and Mg, especially preferably Li, and x corresponding to the valency of the metal cations. The invention also relates to apparatus (R) for carrying out said method.
摘要翻译:本发明涉及生产金属氯化物M'+ Cl - - 的方法,其中使用光气,双光气和/或三光气(2)使固体形式的金属碳酸盐(1)反应以形成金属氯化物M x + Cl x - (1')中,金属M选自碱金属,碱土金属,Al和Zn,优选Li和Mg,特别优选Li,x相应于金属阳离子的化合价。 涉及用于执行所述方法的设备(R)。
摘要:
An apparatus and method sinters or partially sinters green pellets in a selected temperature range to make proppant particles as the green pellets pass through a first central portion of the first vortex gas flow and exit the second end of the first cylindrical vessel and/or pass through a second central portion of the second vortex flow and exit the fourth end of the second cylindrical vessel.
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:
The invention relates to a reactor (1) for carrying out a continuous oxide hydrogenation of a feed gas flow (2) of saturated hydrocarbons, which has been previously mixed with a gas flow (3) containing oxygen, on a moving catalyst bed (4) arranged between two concentric cylindrical holding devices (5, 6) in the longitudinal direction of the reactor, leaving a central inner space (7) and an intermediate space (8) between the moving catalyst bed (4) and the inner envelope of the reactor, in order to obtain a reaction gas mixture. Said reactor (1) is characterised in that it comprises at least two reactor sections which are separated from each other and split into sub-sections by means of alternating disk-type deflector plates (10) arranged in the central inner space (7) and annular deflector plates (11) arranged in the intermediate space between the moving catalyst bed (4) and the inner envelope of the reactor. The reactor sections each comprise a mixing device (12) which is arranged in the direction of flow of the reaction gas mixture upstream of the moving catalyst bed (4), said mixing device being formed from the following elements: two or three successively arranged rows of tubes (13) comprising turbulence generators on the outer side thereof, which narrow the cross-section for the passage of the feed gas flow (2) to between 1/2 and 1/10 of the free cross-section, the oxygen-containing gas flow (3) being guided through the tubes and sprayed into the feed gas flow (2) through holes (14) in the tubes (13); in addition to a perforated plate (17) mounted upstream of the tubes (13); and a perforated plate (18) mounted downstream of the tubes (13).
摘要:
This invention provides a reactor (1) for carbon nano- fibre production comprising a generally horizontal elongate cylindrical reaction vessel (902) arranged to rotate about its cylindrical axis and containing in use a particulate catalyst-containing reaction bed (72), said reaction vessel having a gas inlet port (1001) and a gas outlet port (1002) positioned such that one of said inlet and outlet ports is in said bed and the other is outside said bed.
摘要:
A bubble column-type slurry bed reaction system is provided in which an operating system, which synthesizes liquid hydrocarbons by the Fischer-Tropsch (FT) synthesis reaction and separates and derives a catalyst and liquid hydrocarbon products from a slurry composed of gas, liquid and solid phases, can be simplified, and deterioration of catalyst particles caused by attrition and so forth can be reduced. In this FT synthesis reaction system, a bubble column-type slurry bed Fischer-Tropsch synthesis reaction process, in which synthesis gas supplied continuously from the bottom of a reactor and suspended catalyst particles are contacted to form liquid hydrocarbons, gaseous hydrocarbons and water, a process in which a slurry of suspended liquid products formed in the Fischer-Tropsch synthesis reaction process and catalyst particles moves from the reactor to the lower portion of a separation vessel through a downwardly inclined transfer pipe to separate the catalyst particles and gaseous products, a process in which the liquid products formed in the Fischer-Tropsch synthesis reaction process is sent to the separation vessel through a horizontal connecting pipe installed above the downwardly inclined transfer pipe and derived from its apex, a process in which liquid products are derived from the separation vessel, and a process in which a slurry in which catalyst particles are concentrated is derived from the bottom of the separation vessel and circulated to the bottom of the reactor, are driven by the driving force of synthesis gas introduced from the bottom of the reactor and which rises through the slurry bed reactor without using an external drive power source for circulation, and the formed liquid hydrocarbon products, gaseous hydrocarbon products and water are separated and derived without using an external drive power source for separation.
摘要:
The invention relates to a method for producing a storage-resistant ivy leaf extract by using an extracting agent, said extract comprising at least the ingredients hederacoside C and a-hederin. According to the inventive method, a certain quantity of ivy leaves is first comminuted, whereupon the comminuted quantity of ivy leaves is vaporized with hot steam, and the extracting agent is added and extracted. The obtained extract can optionally be dried.