Method for hot and supercritical water oxidation of material with
addition of specific reactants
    4.
    发明授权
    Method for hot and supercritical water oxidation of material with addition of specific reactants 失效
    添加特定反应物的材料的热和超临界水氧化方法

    公开(公告)号:US5837149A

    公开(公告)日:1998-11-17

    申请号:US621746

    申请日:1996-03-22

    摘要: This invention relates to a process for the decomposition of material selected from the group consisting of organic compounds, inorganic compounds, or combinations thereof to compounds which are environmentally acceptable, or are amenable to further degradation by conventional disposal systems to produce environmentally acceptable products, which process comprises: (a) conveying an aqueous solution or an aqueous slurry of material into a reaction zone capable of withstanding the temperatures and pressures of decomposition of the material; (b) contacting the material in the reaction zone with aqueous sodium carbonate as a reactant in an amount effective to decompose the material under hot water or supercritical water oxidation conditions of between about 300.degree. and 600.degree. C. and a pressure of between about 20 and 400 atmospheres for between 0.1 and 120 min, wherein the sodium carbonate at the reaction conditions is present at about 10% or less as a water soluble salt as compared to the solubility of the salt at ambient conditions, wherein the process occurs in the presence of a gaseous oxidant present in an amount of between about 0.1 and 50% by weight of the material; (c) producing about 99% or greater of the decomposition of the material, or 99% or greater conversion of the material to compounds which are environmentally acceptable or to compounds which are amendable to further degradation; and (d) optionally degrading further the compounds produced in step (c) by reaction to environmentally acceptable products. Preferably, the specific reactant is sodium carbonate and the oxidant is oxygen or air.

    摘要翻译: 本发明涉及将选自有机化合物,无机化合物或其组合的材料分解成环境可接受的化合物或通过常规处理系统进一步降解以生产环境可接受的产物的方法,其中 方法包括:(a)将材料的水溶液或水性浆料输送到能够承受材料分解的温度和压力的反应区; (b)使反应区中的材料与碳酸钠水溶液作为反应物接触,其量可以有效地在约300℃至600℃的热水或超临界水氧化条件下分解该材料,压力为约20℃ 和400个大气压在0.1和120分钟之间,其中在反应条件下的碳酸钠与盐在环境条件下的溶解度相比以约10%或更低的水溶性盐存在,其中该方法在存在下发生 的气态氧化剂,其量为所述材料的约0.1至50重量%; (c)产生约99%或更多的材料分解,或99%或更多的材料转化为环境可接受的化合物或可修饰为进一步降解的化合物; 和(d)通过与环境可接受的产物反应,任选进一步降解步骤(c)中产生的化合物。 优选地,特定反应物是碳酸钠,氧化剂是氧气或空气。

    Method and system for forming carbon dioxide from carbon-containing
materials in a molten bath of immiscible metals
    8.
    发明授权
    Method and system for forming carbon dioxide from carbon-containing materials in a molten bath of immiscible metals 失效
    含碳材料中含二氧化碳的方法和系统在易燃金属的熔化浴中

    公开(公告)号:US5177304A

    公开(公告)日:1993-01-05

    申请号:US557561

    申请日:1990-07-24

    摘要: A method and a system for converting carbon-containing feed to atomic carbon and for oxidizing atomic carbon to carbon dioxide is disclosed. Carbon-containing feed, such as municipal garbage, low grade fuel oil and organic or inorganic sludge is introduced to a molten metal bath. The molten metal bath includes a first molten metal phase having a significant solubility of atomic carbon and a second molten metal phase, substantially immiscible in the first molten metal phase and having a solubility of atomic carbon less than that of the first molten metal phase. Carbon in the carbon-containing feed is catalytically converted to atomic carbon. The atomic carbon are oxidized in the first molten metal phase to carbon monoxide which is then directed to the second molten metal phase. Carbon monoxide in the second molten metal phase is oxidized to form carbon dioxide. The carbon dioxide is released to the atmosphere. Other atomic free radicals formed in the molten metal both are substantially converted to oxides and other stable compounds.

    摘要翻译: 公开了一种用于将含碳原料转化为原子碳并将原子碳氧化成二氧化碳的方法和系统。 含有碳的饲料如市政垃圾,低级燃料油和有机或无机污泥被引入到熔融金属浴中。 熔融金属浴包括具有明显的原子碳溶解度和第二熔融金属相的第一熔融金属相,其基本上不混溶在第一熔融金属相中,并且原子碳的溶解度小于第一熔融金相的溶解度。 含碳进料中的碳被催化转化成原子碳。 原子碳在第一熔融金属相中被氧化成一氧化碳,然后被引导到第二熔融金属相。 第二熔融金相中的一氧化碳被氧化形成二氧化碳。 二氧化碳被释放到大气中。 在熔融金属中形成的其它原子自由基基本上转化为氧化物和其它稳定的化合物。