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公开(公告)号：US07850822B2
公开(公告)日：2010-12-14
申请号：US10977137
申请日：2004-10-29
IPC分类号： D21H11/02
摘要： A wet oxidation process is used to control the concentration of reduced sulfur compounds from a viscose process. The wet oxidation process oxidizes the reduced sulfur compounds to convert such reduced sulfur compounds to an alkali sulfate and/or thiosulfate species. The alkali sulfate stream is recycled to the viscose process. Oxidation is performed under elevated temperature and pressure conditions such that the offgas has an oxygen concentration of between about 2% to 18% and the alkali sulfate stream has a pH of about 2 to 10.
摘要翻译： 湿法氧化法用于控制粘胶工艺中还原硫化合物的浓度。 湿氧化过程氧化还原的硫化合物以将这种还原的硫化合物转化为碱硫酸盐和/或硫代硫酸盐物质。 将碱金属硫酸盐流再循环至粘胶工艺。 在升高的温度和压力条件下进行氧化，使得废气的氧浓度为约2％至18％，碱式硫酸盐流的pH为约2至10。
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公开(公告)号：US5234607A
公开(公告)日：1993-08-10
申请号：US872200
申请日：1992-04-22
CPC分类号： C02F11/08
摘要： The invention is a process for starting up a wet oxidation system using essentially pure oxygen for oxidation of a concentrated wastewater. Flow of startup water and air is established through the wet oxidation system at an elevated temperature and pressure. An incremental increase in flow of oxygen and wastewater to the system commences while simultaneously an incremental decrease in flow of startup water and air occurs, raising system temperature in a controlled fashion. The incremental changes in flows are repeated until the wastewater and pure oxygen have reached about 100 percent of selected operating flows, the startup water and air flows have decreased to zero, and the system has attained the selected operating temperature, while maintaining a selected oxygen residual in the offgases.
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公开(公告)号：US08734648B2
公开(公告)日：2014-05-27
申请号：US12677642
申请日：2008-09-11
CPC分类号： C02F11/08 , C02F1/008 , C02F1/02 , C02F1/44 , C02F1/66 , C02F3/00 , C02F3/02 , C02F2103/365 , C02F2209/06
摘要： Systems and methods are provided for the treatment of caustic wastewater. Specifically, systems and methods are provided for combining refinery spent caustic and ethylene spent caustic solutions and treating the combined spent caustic mixture using a wet air oxidation process.
摘要翻译： 提供了用于处理苛性废水的系统和方法。 具体地说，提供了用于组合炼油废碱和乙烯废碱溶液的系统和方法，并使用湿空气氧化方法处理组合的废碱混合物。
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公开(公告)号：US20100252500A1
公开(公告)日：2010-10-07
申请号：US12677642
申请日：2008-09-11
IPC分类号： C02F1/72 , C02F1/66 , C02F3/02 , C02F101/30 , C02F101/32
CPC分类号： C02F11/08 , C02F1/008 , C02F1/02 , C02F1/44 , C02F1/66 , C02F3/00 , C02F3/02 , C02F2103/365 , C02F2209/06
摘要： Systems and methods are provided for the treatment of caustic wastewater. Specifically, systems and methods are provided for combining refinery spent caustic and ethylene spent caustic solutions and treating the combined spent caustic mixture using a wet air oxidation process.
摘要翻译： 提供了用于处理苛性废水的系统和方法。 具体地说，提供了用于组合炼油废碱和乙烯废碱溶液的系统和方法，并使用湿空气氧化方法处理组合的废碱混合物。
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公开(公告)号：US5262060A
公开(公告)日：1993-11-16
申请号：US845567
申请日：1992-03-04
CPC分类号： C02F11/08
摘要： This is a process for wet oxidation of an ammonium salt containing waste liquor which prevents plugging of the vapor-carrying lines of the wet oxidation system. The vapor-carrying lines are maintained in an unobstructed condition by adding sufficient liquid water to dissolve condensed ammonium salt which can plug these lines. This provides for safe operation of the wet oxidation system.
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公开(公告)号：US5192453A
公开(公告)日：1993-03-09
申请号：US817172
申请日：1992-01-06
CPC分类号： C02F11/08 , C02F1/72 , C02F2101/38 , Y10S210/904 , Y10S210/908
摘要： A process is disclosed which limits the corrosion of the materials of construction of a wet oxidation system treating wastewaters. The process is particularly useful in the wet oxidation treatment of ammonium sulfate containing wastes such as acrylonitrile wastewaters. The wastewater is mixed with an oxygen containing gas such that a substantial residual oxygen gas concentration is maintained from before the stream-gas mixture is heated for wet oxidation until after the oxidized stream-gas mixture is cooled and separated. Preferably, in the treatment of acrylonitrile waste water the shutdown procedure comprises cooling said waste stream by introducing an aqueous liquid substantially free of organic impurities and containing a basic material.
摘要翻译： 公开了一种限制用于处理废水的湿氧化系统的构造材料的腐蚀的方法。 该方法在含有硫酸铵的废弃物如丙烯腈废水的湿式氧化处理中特别有用。 将废水与含氧气体混合，使得在流 - 气混合物被加热以进行湿式氧化之前，直到氧化的流 - 气体混合物被冷却和分离之后，维持相当大的残余氧气浓度。 优选地，在丙烯腈废水的处理中，关闭方法包括通过引入基本上不含有机杂质并含有碱性物质的水性液体来冷却所述废物流。
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公开(公告)号：US06190564B1
公开(公告)日：2001-02-20
申请号：US09164557
申请日：1998-10-01
IPC分类号： C02F174
CPC分类号： C02F11/086 , C02F1/74
摘要： A process is disclosed for producing an oxidized liquid effluent containing minimal dissolved gases therein, from a subcritical wet oxidation treatment system. The oxidation mixture exiting from the treatment system is separated into a first oxidized liquid effluent and a first gaseous phase as the mixture a first separator vessel operated at a relatively low superatmospheric pressure. Sufficient pressure is maintained in the first gaseous phase to provide the motive force for transport to further treatment or discharge. The first oxidized liquid effluent flows to a second separator vessel operated at essentially atmospheric pressure, where remaining dissolved gases separate from the first oxidized liquid effluent. The second gaseous phase is discharged and the second oxidized liquid effluent is suitable for storage or further treatment. Provision for adjusting the pH of the oxidized liquid effluent during the separation process is also disclosed.
摘要翻译： 公开了一种从亚临界湿式氧化处理系统生产含有最少溶解气体的氧化液体流出物的方法。 从处理系统排出的氧化混合物被分离为第一氧化液体流出物和作为混合物的第一气相，第一分离器容器在相对低的超大气压力下操作。 在第一气相中保持足够的压力以提供用于运输以进一步处理或排放的动力。 第一氧化液体流出物流到在基本上大气压下操作的第二分离容器，其中剩余的溶解气体与第一氧化液体流出物分离。 排出第二气相，第二氧化液体流出物适于贮存或进一步处理。 还公开了在分离过程中调节氧化液体流出物的pH的规定。
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公开(公告)号：US5389264A
公开(公告)日：1995-02-14
申请号：US089463
申请日：1993-07-12
申请人： Richard W. Lehmann , Mark A. Clark
发明人： Richard W. Lehmann , Mark A. Clark
IPC分类号： B01D19/00
CPC分类号： B01D19/0036 , Y10T137/86324
摘要： This invention relates to a process and apparatus for dissipating the energy of a wet oxidation mixture after that stream traverses a pressure control valve. The depressurized stream is discharged into a phase separator vessel containing a gas phase and a liquid phase. The pressure control valve is positioned to discharge the oxidation mixture at a selected orientation below the surface level of the liquid phase in the vessel. This dissipates the energy of the mixture and prevents erosion of the phase separator vessel. The apparatus of the invention includes the separator vessel with gas and liquid phase exits, a control device for maintaining the liquid phase at the selected level in the vessel, a pressure control valve positioned at an aperture in the vessel for discharging the mixture below the surface level of the liquid phase in the vessel, and sealing device between the control valve and the separator vessel.
摘要翻译： 本发明涉及一种在流过压力控制阀之后耗散湿氧化混合物的能量的方法和装置。 将减压流排出到含有气相和液相的相分离器容器中。 压力控制阀被定位成将氧化混合物以低于容器中液相表面水平的选定取向排出。 这消散了混合物的能量并防止相分离器容器的腐蚀。 本发明的装置包括具有气体和液相出口的分离器容器，用于将液相保持在容器中选定水平的控制装置，位于容器中的孔处的压力控制阀，用于将混合物排放到表面下方 容器中液相的水平，以及控制阀和分离器容器之间的密封装置。
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公开(公告)号：US5651897A
公开(公告)日：1997-07-29
申请号：US740174
申请日：1996-10-28
申请人： Richard W. Lehmann
发明人： Richard W. Lehmann
CPC分类号： C02F11/08
摘要： Disclosed is a process for wet oxidation treatment of high strength liquor or wastewater to destroy a substantial portion of the pollutants and produce an effluent stream containing a high solids content for recovery or disposal. The liquor is treated by wet oxidation and separate vapor and liquid streams are removed from the wet oxidation reactor. The vapor stream is cooled and separated to give a liquid condensate phase and a gaseous phase. The liquid stream from the reactor is cooled and divided, with a portion of the liquid effluent sent to recovery or disposal, and a portion combined with the condensate phase. This low pollutant content stream is used to dilute the raw feed liquor and maintain a high solids concentration in the liquid effluent stream.
摘要翻译： 公开了一种用于高强度液体或废水的湿氧化处理以破坏大部分污染物并产生含有高固体含量以用于回收或处置的流出物流的方法。 通过湿氧化处理液体，并从湿式氧化反应器中除去分离的蒸气和液体流。 将蒸气流冷却并分离，得到液体冷凝物相和气相。 来自反应器的液体物流被冷却并分离，一部分液体流出物被送至回收或处置，以及与冷凝物相结合的部分。 这种低污染物流用于稀释原料进料液体并在液体流出物流中保持高固体浓度。
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公开(公告)号：US5240619A
公开(公告)日：1993-08-31
申请号：US16229
申请日：1993-02-11
IPC分类号： C02F11/08
CPC分类号： C02F11/086 , C02F11/08
摘要： A two-stage wet oxidation process for COD removal from high strength wastewater is disclosed. The wastewater stream is treated in a first stage subcritical wet oxidation zone at temperatures between about 250.degree. and 374.degree. C. to remove a substantial portion of the COD. Subsequently, all or a portion of the first stage oxidized waste stream is treated in a second stage supercritical wet oxidation zone at temperatures of 374.degree. to about 600.degree. C. to remove any remaining COD content. Both stages of wet oxidation treatment are carried out at essentially the same system pressure.
摘要翻译： 公开了一种用于从高强度废水中去除COD的两阶段湿氧化方法。 在约250℃至374℃的温度下，在第一级亚临界湿氧化区中处理废水流，以除去大部分的COD。 随后，在374度至约600℃的温度下，在第二级超临界湿式氧化区中处理全部或一部分第一级氧化废物流，以除去任何剩余的COD含量。 湿式氧化处理的两个阶段在基本相同的系统压力下进行。
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