Process for incinerating solid wastes and a process for treating solid
wastes and a process for treating gases generated through incineration
of these wastes
    1.
    发明授权
    Process for incinerating solid wastes and a process for treating solid wastes and a process for treating gases generated through incineration of these wastes 失效
    焚烧固体废物的方法和处理固体废物的方法以及处理这些废物焚烧产生的气体的方法

    公开(公告)号:US5159885A

    公开(公告)日:1992-11-03

    申请号:US645262

    申请日:1991-01-24

    摘要: The present invention relates to a process for incinerating burnable wastes, such as plastics, and to the treatment of the gases generated by such incineration. The waste materials are buried in a landfill, combustion is initiated with an explosion which simultaneously creates a combustion chamber as well as initiating incineration. A fuel and an oxidizing gas are supplied to the combustion chamber and conduits are provided for discharging the gases formed during the incineration process. The angle of introduction of the fuel and/or fuel and air mixture controls the direction of the incineration process. Landfill gases can be fed into the fuel conduit pipe for utilization as a combustion fuel. In addition, when using a liquid fuel, good results have been achieved by combining a suspension of a carbonate or bicarbonate in the fuel which serves to reduce chloride gases such as phosgene which are generated during the decomposition of plastics such as polyvinylchloride. Incineration gases are let into the treatment apparatus for conversion into non-toxic gases which are subsequently catalytically treated to remove environmentally harmful substances.

    摘要翻译: 本发明涉及一种焚烧可燃废物如塑料的方法,以及对这种焚化产生的气体的处理。 废料被埋在垃圾填埋场中,燃烧起爆,同时产生燃烧室以及启动焚烧。 燃料和氧化气体被供应到燃烧室,并且设置管道用于排放在焚烧过程中形成的气体。 燃料和/或燃料和空气混合物的引入角度控制焚烧过程的方向。 垃圾填埋气体可以进入燃料管道,用作燃烧燃料。 此外,当使用液体燃料时,通过将碳酸盐或碳酸氢盐的悬浮液组合在用于减少在诸如聚氯乙烯的塑料分解过程中产生的氯气等光气的燃料中已经获得了良好的结果。 将焚烧气体放入处理设备中以转化成无毒气体,随后进行催化处理以去除对环境有害的物质。

    Method for desulfurizing a gas
    2.
    发明授权
    Method for desulfurizing a gas 失效
    气体脱硫方法

    公开(公告)号:US5389351A

    公开(公告)日:1995-02-14

    申请号:US970695

    申请日:1992-11-04

    摘要: A foul gas containing H.sub.2 S is brought into the presence of SO.sub.2 in a first stage to permit the reaction between SO.sub.2 and H.sub.2 S to form water and elemental sulfur. The SO.sub.2 is solubilized in an absorbent composition which includes a solvent for both SO.sub.2 and H.sub.2 S so that the H.sub.2 S in the foul gas is first solubilized in the absorbent composition where it is then brought into contact with the solubilized SO.sub.2 for reaction between a major portion of the H.sub.2 S and the solubilized SO.sub.2 to form elemental sulfur. The gas is then passed to a second stage where any remaining H.sub.2 S is removed by aqueous catalytic reaction of the type conventional in the prior art. The apparatus utilized to carry out the present invention preferably includes a two stage column in which the first stage provides the absorbent material containing solubilized SO.sub.2 for reaction with the H.sub.2 S of the foul gas. During the SO.sub.2 extraction stage the major portion of the H.sub.2 S is removed from the foul gas. The gas is then conveyed from the first stage to a second stage which comprises a conventional aqueous catalytic scrubbing operation where the remainder of the H.sub.2 S is removed. The absorbent composition utilized in the process comprises solvents that dissolve SO.sub.2 and/or H.sub.2 S which can be heated to a temperature above the melting point of sulfur without detrimentally affecting the solvent so that it may be recycled through the system.

    摘要翻译: 含有H 2 S的恶臭气体在第一阶段进入SO 2存在,以允许SO 2和H 2 S之间的反应形成水和元素硫。 SO 2溶解在包含SO 2和H 2 S的溶剂的吸收剂组合物中,使得臭气中的H 2 S首先溶解在吸收剂组合物中,然后与溶解的SO 2接触,以便在大部分 H2S和溶解的SO2形成元素硫。 然后将气体通入第二阶段,其中通过现有技术中常规类型的水性催化反应除去任何剩余的H 2 S. 用于实施本发明的装置优选包括两级塔,其中第一级提供含有溶解的SO 2的吸收材料,用于与恶劣气体的H 2 S反应。 在SO2萃取阶段,H2S的主要部分被从气体中除去。 然后将气体从第一阶段输送到第二阶段,其包括常规的水性催化洗涤操作,其中除去剩余的H 2 S. 在该方法中使用的吸收剂组合物包括溶解SO 2和/或H 2 S的溶剂,其可以被加热到高于硫的熔点的温度,而不会有害地影响溶剂,使得其可以通过系统再循环。

    Process for the production of hydrogen
    3.
    发明授权
    Process for the production of hydrogen 失效
    生产氢气的方法

    公开(公告)号:US5286473A

    公开(公告)日:1994-02-15

    申请号:US11740

    申请日:1993-02-01

    摘要: In accordance with the invention an alkali metal is reacted with an ionizable hydrogen compound selected from the group consisting of hydrochloric acid, water or mixtures thereof to produce hydrogen and an alkali metal chloride or alkali metal hydroxide, depending upon whether hydrochloric acid or water is used to react with the alkali metal. The alkali metal chloride produced directly as a by-product of the hydrogen production step, or subsequently from the alkali metal hydroxide, is heated in the presence of aluminum to produce the alkali metal for reuse in the process and aluminum chloride. The aluminum chloride is hydrolyzed to aluminum hydroxide and hydrochloric acid. The hydrochloric acid can be recycled to produce hydrogen by reaction directly with the alkali metal or can be used to convert the alkali metal hydroxide formed during the hydrogen production step to the alkali metal chloride which can be recycled back into the process. The aluminum hydroxide thus formed can be electrolyzed to aluminum metal and water to provide a method of recovering aluminum metal from aluminum scrap which previously has not be readily recyclable.

    摘要翻译: 根据本发明,碱金属与选自盐酸,水或其混合物的可离子化氢化合物反应以产生氢和碱金属氯化物或碱金属氢氧化物,这取决于是使用盐酸还是水 与碱金属反应。 作为氢制造步骤的副产物或随后从碱金属氢氧化物中直接制备的碱金属氯化物在铝的存在下加热以产生碱金属以在该方法中再利用和氯化铝。 将氯化铝水解成氢氧化铝和盐酸。 盐酸可以通过与碱金属直接反应而再生生成氢,也可以用于将在氢气制备步骤中形成的碱金属氢氧化物转化成碱性金属氯化物,其可循环使用。 如此形成的氢氧化铝可以电解为铝金属和水,以提供从铝废料中回收铝金属的方法,其先前不易回收。