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    Electric arc oven for treating molten metals with a gas and a process therefor
    1.
    发明授权
    Electric arc oven for treating molten metals with a gas and a process therefor 失效
    用于用气体处理金属的电弧炉及其工艺

    公开(公告)号：US5067693A

    公开(公告)日：1991-11-26

    申请号：US492140

    申请日：1990-03-13

    申请人： Etienne Lepoutre ,  Michel Devaux ,  Bruno Hirschberg ,  Franz A. Petio ,  Paul Weitzer

    发明人： Etienne Lepoutre ,  Michel Devaux ,  Bruno Hirschberg ,  Franz A. Petio ,  Paul Weitzer

    IPC分类号： B22D1/00 ,  C21C5/52 ,  F27D11/08

    CPC分类号： C21C5/5217 ,  B22D1/00 ,  B22D1/005 ,  Y02P10/216

    摘要： Electric arc oven for melting scrap iron of the type comprising a vat lined with an inner coating made of refractory material which is called the sole of the oven, lateral walls, a vault capping the upper opening of the vat, openings provided in the vault through which the electrodes extend, and a tapping nozzle or eccentric tapping hole. In this oven, the sole is provided with at least one device for injecting gas to stir the molten metal. The injection device includes a low injector formed of a compact block made of dense non-porous refractory material through which extend one or a plurality of, preferably less than 50, hollow metallic tubes or slits or channels along its entire height in the direction of gaseous blowing and permitting gas to pass therethrough. The low injector is surmounted by a body of porous rammed earth whose initial thickness is 50 to 300 mm, is composed of unshaped refractory material in the form of granular particles having a diameter of at least 10 mmg, and the granulometry of the porous rammed earth has a permeability between 100 and 300 Namoperm after fritting under heat. A process of melting scrap iron using this oven is also disclosed. The gas is sent in the molten metal by first passing through the low injector then through the layer of porous rammed earth, Gas flows through at a feeding pressure of at most 10 bars and a flow rate of at least 20 Nm.sup.3 /h after fritting under heat.

    摘要翻译： 用于熔化废铁的电弧炉，其包括一个内衬有由耐火材料制成的内部涂层的桶，所述内部涂层被称为烘箱的底部，侧壁，覆盖桶的上部开口的保险库，在库中设置的开口通过 电极延伸，以及攻丝喷嘴或偏心攻丝孔。 在该烘箱中，鞋底设置有至少一个用于喷射气体以搅拌熔融金属的装置。 注射装置包括由致密无孔耐火材料制成的紧凑块形成的低喷射器，通过该喷射装置沿气体方向的整个高度延伸一个或多个，优选小于50个中空的金属管或狭缝或通道 吹气并允许气体通过。 低喷射器由初始厚度为50至300mm的多孔夯土体组成，由直径至少为10mm的颗粒形状的不定形耐火材料组成，多孔夯土的粒度 在热处理后具有100至300纳米管的渗透率。 还公开了使用该烘箱熔化废铁的方法。 气体通过首先通过低喷射器然后穿过多孔夯土的一部分被送入熔融金属中，气体以最多10巴的进料压力流过，并且在熔化之后的流速为至少20Nm 3 / h 热。

    Method of heating the charge of a glass furnace
    4.
    发明授权
    Method of heating the charge of a glass furnace 失效
    加热玻璃熔炉装料的方法

    公开(公告)号：US5853448A

    公开(公告)日：1998-12-29

    申请号：US764878

    申请日：1996-12-16

    申请人： Eric Duchateau ,  Louis Philippe ,  Dominique Jouvaud ,  Robert Plessier ,  Claude Pivard ,  Etienne Lepoutre ,  Jean-Thierry Duboudin

    发明人： Eric Duchateau ,  Louis Philippe ,  Dominique Jouvaud ,  Robert Plessier ,  Claude Pivard ,  Etienne Lepoutre ,  Jean-Thierry Duboudin

    IPC分类号： F23L7/00 ,  C03B3/02 ,  C03B5/235 ,  F23N1/00 ,  C03B5/435

    CPC分类号： C03B5/2353 ,  Y02P40/55 ,  Y02P40/57

    摘要： Method of heating the charge of a glass furnace in which at least one burner is placed in a wall of a furnace so as to heat the bath of glass, characterized in that at least one assembly consisting of a first and a second burner which are fed with fuel gas and with oxidizer gas containing at least 50 vol. % of oxygen is arranged in one of the walls of the furnace at a distance (D) at least equal to approximately 3 meters from each other, in that an oxygen lance is arranged between the first and second burners, the first burner, the second burner and the lance forming a combustion assembly and in that from approximately 30 vol. % to approximately 80 vol. % of oxidizer gas is sent into the lance and from approximately 20 vol. % to approximately 70 vol. % of oxidizer gas is sent to the first and second burners in substantially equal proportions, so as to create a retarded combustion of the fuel and oxidizer gases and to extend substantially the length of the flame compared with the length of the flame obtained with no oxidizer gas injected into the lance.

    摘要翻译： 一种加热玻璃熔炉的装料的方法，其中将至少一个燃烧器放置在炉壁中以便加热玻璃浴，其特征在于，由第一和第二燃烧器组成的至少一个组件 燃料气体和氧化剂气体至少含有50vol。 氧气的百分比以至少等于大约3米的距离（D）设置在炉的一个壁中，因为氧喷枪设置在第一和第二燃烧器之间，第一燃烧器，第二燃烧器 燃烧器和喷枪形成燃烧组件，其中约30体积％ ％至约80体积％ 氧化剂气体的百分比被送入喷枪中，从约20体积 ％至约70体积％ 氧化剂气体的百分比以基本相等的比例被输送到第一和第二燃烧器，以便产生燃料和氧化剂气体的延迟燃烧，并且与无氧化剂获得的火焰的长度相比基本上延长了火焰的长度 气体注入喷枪。

    Method for delivering a variable flow of hydrogen peroxide to a bleaching vessel
    5.
    发明授权
    Method for delivering a variable flow of hydrogen peroxide to a bleaching vessel 有权
    将可变的过氧化氢流输送到漂白容器的方法

    公开(公告)号：US06340410B1

    公开(公告)日：2002-01-22

    申请号：US09142795

    申请日：1999-04-01

    申请人： Etienne Lepoutre

    发明人： Etienne Lepoutre

    IPC分类号： D21C916

    CPC分类号： C01B15/023 ,  C01B15/01 ,  D21C9/163

    摘要： A unit (4) consumes hydrogen peroxide at a predetermined concentration C1 and at a rate variable from 0 to D1. The apparatus (1) generates hydrogen peroxide at a concentration C2>C1 and at a rate variable between two values D2 and D3. The generated hydrogen peroxide is fed to a buffer (2) from which a variable flow is drawn, optionally diluted (at 3) and fed to the consumer unit (4). The system is useful for delivering hydrogen peroxide to paper pulp bleaching units.

    摘要翻译： 单元（4）以预定浓度C1和以0至D1的变化率消耗过氧化氢。 装置（1）产生浓度为C2> C1且以两个值D2和D3之间变化的速率的过氧化氢。 将产生的过氧化氢进料到缓冲液（2），从其中抽出可变流量，任选地稀释（3）并进料到消费单元（4）。 该系统可用于将过氧化氢输送到纸浆漂白装置。