PLASMA PROCESS TO CONVERT SPENT POT LINING (SPL) TO INERT SLAG, ALUMINUM FLUORIDE AND ENERGY

    公开(公告)号:WO2021189133A1

    公开(公告)日:2021-09-30

    申请号:PCT/CA2021/050377

    申请日:2021-03-22

    Abstract: Apparatus for converting Spent Pot Lining (SPL) into inert slag, aluminum fluoride and energy includes a plasma arc furnace such that the destruction of SPL occurs therein. The furnace generates an electric arc within the waste, which arc travels from an anode to a cathode and destroys the waste due to the arc's extreme temperature, thereby converting a mineral fraction of SPL into vitrified inert slag lying within a crucible of the furnace. The furnace gasifies the carbon content of the SPL and produces a well-balanced syngas. The gasification takes place due to the controlled intake of air and steam into the furnace. The gasification reaction liberates a significant amount of energy. Steam captures this excess energy, to provide part of the oxygen requirement for gasification and to contribute to raise the syngas H2 content. Steam also contributes to converting some SPL fluorides (NaF and Al2F3) into hydrogen fluoride. The plasma SPL processing system is compact (occupying less area than some competitive methods of SPL treatment), can be installed in close proximity to the aluminium plant (minimizing transportation of SPL and AlF3), and requires only electricity as its energy source and thus no fossil fuels.

    METHOD AND APPARATUS FOR THE PRODUCTION OF HIGH PURITY SPHERICAL METALLIC POWDERS FROM A MOLTEN FEEDSTOCK

    公开(公告)号:WO2019178668A1

    公开(公告)日:2019-09-26

    申请号:PCT/CA2019/000034

    申请日:2019-03-18

    Abstract: An apparatus for producing metallic powders from molten feedstock includes a heating source for melting a solid feedstock into a molten feed, and a crucible for containing the molten feed. A liquid feed tube is also provided to feed the molten feed as a molten stream. A plasma source delivers a plasma stream, with the plasma stream being adapted to be accelerated to a supersonic velocity and being adapted : to then impact the molten stream for producing metallic powders. The feed tube extends from the crucible to a location where a supersonic plasma plume atomizes the molten stream. The plasma source includes at least two plasma torches provided with at least one supersonic nozzle aimed towards the molten stream. The multiple plasma torches are disposed symmetrically about the location where the supersonic plasma plumes atomize the molten stream, such as in a ring-shaped configuration.

    PLASMA FIRED STEAM GENERATOR SYSTEM
    3.
    发明申请
    PLASMA FIRED STEAM GENERATOR SYSTEM 审中-公开
    等离子火焰发电机系统

    公开(公告)号:WO2015035502A1

    公开(公告)日:2015-03-19

    申请号:PCT/CA2014/000679

    申请日:2014-09-12

    CPC classification number: F22B1/30 F22B37/48 F22B37/54

    Abstract: A system for generating high pressure steam from dirty water uses a combination of submerged plasma arcs and electrical resistive heating. Dirty water from steam assisted gravity drainage, or other dirty water producing process, which needs to be converted into high pressure steam, is fed directly without any pre-treatment, into a plasma fired steam generator, powered by submerged electrodes. The combination of electric arc plasma and resistive heating is created between the submerged electrodes. The heat so generated will boil the water portion of the dirty water feed to generate steam that is collected in a steam space and then removed therefrom. The solids and other residues (residual sludge) present in the feed water settle down at the bottom of the steam generator and are removed via a blow-down stream. The plasma arcs are used to intermittently remove any scaling or solid deposits that can accumulate on the electrodes.

    Abstract translation: 用于从脏水产生高压蒸汽的系统使用浸没等离子体电弧和电阻加热的组合。 需要转化为高压蒸汽的蒸汽辅助重力排水或其他脏水生产过程中的脏水直接进料而不经过任何预​​处理,进入由浸没电极供电的等离子体燃烧蒸汽发生器。 在浸没电极之间产生电弧等离子体和电阻加热的组合。 所产生的热将使脏水进料的水部分沸腾,产生收集在蒸汽空间中然后从其中除去的蒸汽。 供水中的固体和其他残留物(残留污泥)沉淀在蒸汽发生器的底部,并通过排放流除去。 等离子弧用于间歇地去除可能积聚在电极上的任何结垢或固体沉积物。

    HYDROGEN PRODUCTION FROM HYDROCARBONS BY PLASMA PYROLYSIS

    公开(公告)号:WO2022087708A1

    公开(公告)日:2022-05-05

    申请号:PCT/CA2021/000099

    申请日:2021-11-01

    Abstract: A method for producing hydrogen and carbon powder from the plasma pyrolysis of hydrocarbons is disclosed and includes a DC n on-transferred electric arc plasma torch, a hot-wall reactor, for example lined with refractory or a graphite (slippery material), and a cyclone. The cyclone is adapted to recover heavier carbon particles and allow part of the hydrogen, unconverted hydrocarbon and lighter carbon particles to be recycled to the reactor to improve the overall yield of hydrogen. The prolonged contact with the plasma plume provides a typically complete conversion to hydrogen and carbon powder due to the hot walls of the reactor. The carbon powder leaving the plasma plume solidifies into a graphite- like powder in the reactor. A turbulence inside the reactor is adapted to prevent the buildup of soot on a reactor surface via the recycling of hydrogen, hydrocarbon gas or carbon powder or a mix of thereof to the reactor.

    NANO-SILICON PARTICLES/WIRE PRODUCTION BY ARC FURNACE FOR RECHARGEABLE BATTERIES

    公开(公告)号:WO2021068054A1

    公开(公告)日:2021-04-15

    申请号:PCT/CA2020/000117

    申请日:2020-10-09

    Abstract: A process and an apparatus using pure silicon as raw material with no other pre- processed material for producing nano-Silicon and/or nano-Silicon-carbon coated composite material in the form of particles, nanowires or a combination of both, for use in a high capacity and high energy efficiency manufacturing of anodes for Lithium-ion batteries. The apparatus comprises a reactor including at least one electrode and adapted to provide at least one arc, e.g. a DC transferred arc, for melting and vaporizing silicon provided in the reactor. A quenching system is provided for delivering a gas for quenching, in the reactor, the so-produced silicon vapour so as to form nano particles and/or nano wires. The reactor is under vacuum. The gas can be injected by a vortex and/or via the electrode that is hollow. The electrode is consumable and vertically movable to control an arc voltage and to compensate for electrode erosion.

    ENERGY EFFICIENT HIGH POWER PLASMA TORCH
    7.
    发明申请
    ENERGY EFFICIENT HIGH POWER PLASMA TORCH 审中-公开
    能源效率高的功率等离子电热管

    公开(公告)号:WO2015172237A1

    公开(公告)日:2015-11-19

    申请号:PCT/CA2015/000325

    申请日:2015-05-19

    Abstract: An apparatus is disclosed wherein an electric arc is employed to heat an injected gas to a very high temperature. The apparatus comprises four internal components: a button cathode and three cylindrical co-axial components, a first short pilot insert, a second long insert and an anode. Vortex generators are located between these components for generating a vortex flow in the gas injected in the apparatus and which is to be heated at very high temperature by the electric arc struck between the anode and cathode. Cooling is provided to prevent melting of three of the internal components, i.e. the cathode, the anode and the pilot insert. However, to limit the heat loss to the cooling fluid, the long insert is made of an insulating material. In this way, more electrical energy is transferred to the gas.

    Abstract translation: 公开了一种使用电弧将注入的气体加热到非常高的温度的装置。 该装置包括四个内部部件:按钮阴极和三个圆柱形同轴部件,第一短引导插入件,第二长插入件和阳极。 涡流发生器位于这些部件之间,用于在注入到设备中的气体中产生涡流,并且通过在阳极和阴极之间的电弧被加热到非常高的温度。 提供冷却以防止三个内部部件即阴极,阳极和引导插入物的熔化。 然而,为了限制对冷却流体的热损失,长插入件由绝缘材料制成。 以这种方式,更多的电能转移到气体中。

    METHOD TO MAXIMIZE ENERGY RECOVERY IN WASTE-TO-ENERGY PROCESSES
    8.
    发明申请
    METHOD TO MAXIMIZE ENERGY RECOVERY IN WASTE-TO-ENERGY PROCESSES 审中-公开
    在废物能源过程中最大限度地恢复能源的方法

    公开(公告)号:WO2012122631A1

    公开(公告)日:2012-09-20

    申请号:PCT/CA2012/000233

    申请日:2012-03-14

    Abstract: In a fossil fuel waste incineration or plasma gasification process, waste heat generated by combustion of waste is captured by a heat transfer fluid and conveyed to an Organic Rankine Cycle (ORC) for energy recovery. In the case of a fossil fuel-fired waste incineration system, the heat transfer fluid captures waste heat from a double-walled combustion chamber, a heat exchanger being used to cool the hot process exhaust (gas cooler). In the case of a plasma waste gasification system, the heat transfer fluid captures waste heat from a plasma torch, a gasification chamber and combustion chamber cooling jackets as well as any other high-temperature components requiring cooling, and then a heat exchanger used to cool the hot process exhaust (gas cooler). The heat exchanger may take on several configurations, including plate or shell and tube configurations.

    Abstract translation: 在化石燃料废物焚烧或等离子体气化过程中,由废物燃烧产生的废热被传热流体捕获并输送到有机兰金循环(ORC)以进行能量回收。 在化石燃料废物焚烧系统的情况下,传热流体捕获来自双壁燃烧室的废热,用于冷却热处理废气(气体冷却器)的热交换器。 在等离子体废气化系统的情况下,传热流体捕获来自等离子体焰炬,气化室和燃烧室冷却夹套的废热以及需要冷却的任何其它高温部件,然后用于冷却的热交换器 热处理废气(气体冷却器)。 热交换器可以具有几种构造,包括板或壳和管构造。

    NON-WATER COOLED CONSUMABLE ELECTRODE VACUUM ARC FURNACE FOR CONTINUOUS PROCESS

    公开(公告)号:WO2020243812A1

    公开(公告)日:2020-12-10

    申请号:PCT/CA2020/000067

    申请日:2020-06-08

    Abstract: A consumable electrode vacuum arc furnace and, more particularly, a direct current consumable electrode vacuum arc furnace is provided, wherein no water cooling is needed to cool down typically neither the electrodes, nor any other parts of the furnace, and this includes the shell, the flanges ports and the electrical connections of the furnace. The present furnace uses non-metallic electrodes, such as graphite electrode, which are suitable for melting metals, smelting of metal ores, and metal oxide to elemental metal where the use of graphite electrodes is a common practice. The present furnace and electrode assemblies render possible to perform a true continuous process of melting and smelting under controlled pressure.

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