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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：US4812243A
公开(公告)日：1989-03-14
申请号：US254070
申请日：1988-10-06
CPC分类号： C02F11/08 , Y10S210/904
摘要： A method for operating a continuous wet oxidation system for destroying cyanide in caustic cyanide and metal wastes which scale upon heating. Raw waste is introduced into the wet oxidation reactor without heating while a mixture of heated dilution water and oxygen containing gas is introduced into the reactor by a separate inlet. The reactor is fitted with a pair of valved effluent lines and corresponding valved lines for introducing dilute mineral acid into each effluent line at system pressure. Oxidized effluent and offgases exit through a first effluent line while dilute mineral acid flows through a second effluent line into the reactor to prevent scale buildup. Periodically the flows are alternated such that oxidized effluent and offgases exit through the second effluent line and dilute mineral acid flows through the first effluent line into the reactor to remove scale. The oxidized effluent and offgases are then cooled and separated.
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公开(公告)号：US4387084A
公开(公告)日：1983-06-07
申请号：US314859
申请日：1981-10-26
CPC分类号： B01D19/0005 , C01B17/0253
摘要： A process for treating thiosulfate containing liquors such as coke oven gas scrubbing liquors by first adding acid, preferably sulfuric acid, to convert thiosulfate to elemental sulfur and bisulfite, separating and removing the elemental sulfur, and subjecting the remaining liquor to wet oxidation.
摘要翻译： 通过首先加入酸（优选硫酸）处理含硫醇硫酸盐的液体，例如焦炉气体洗涤液，以将硫代硫酸盐转化为元素硫和亚硫酸氢盐，分离和除去元素硫，并使剩余的液体经受湿氧化。
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9.发明授权
公开(公告)号：US4372940A
公开(公告)日：1983-02-08
申请号：US314860
申请日：1981-10-26
IPC分类号： C01B17/02
CPC分类号： C01B17/0253
摘要： A process and apparatus for treating thiosulfate containing liquors such as coke oven gas scrubbing liquors in two stages of wet oxidation with intermediate removal of elemental sulfur. Mild oxidation conditions in the first stage results in conversion of thiosulfate sulfur to elemental sulfur, which is removed prior to second stage wet oxidation of the liquors to substantially reduce the liquor oxygen demand.
摘要翻译： 一种用于处理含硫代硫酸盐的液体的方法和设备，该方法和设备在两步骤的湿式氧化中除去元素硫，用于将焦化炉气体洗涤液进行处理。 第一阶段的轻度氧化条件导致硫代硫酸盐硫转化为元素硫，在硫酸二次硫酸化之前，将其除去，以显着降低液体氧需求。
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公开(公告)号：US5340473A
公开(公告)日：1994-08-23
申请号：US166064
申请日：1993-12-14
CPC分类号： B01J4/001 , B01F5/045 , B01J10/00 , Y10S261/75
摘要： An apparatus for mixing pressurized air with pressurized waste liquor at the inlet of a wet oxidation system heat exchanger device is disclosed. The apparatus is a T-shaped piping member with an inline first inlet and outlet and a second inlet oriented at about a right angle to said inline first inlet. The outlet is connected to an inlet tube of a tube and shell heat exchanger. A conduit supplies a pressurized waste liquor stream to the piping member through the second inlet. An oxygen-containing gas supply conduit, with circumferential sealing means, extends from exterior the T-shaped member, through the first inlet and terminates at a point beyond the intersection of the first and second inlets. The circumferential sealing means seals to the first inlet. The liquor entering the T-shaped member is heated to a selected elevated temperature prior to contacting a pressurized oxygen-containing gas supplied from the gas supply conduit.
摘要翻译： 公开了一种用于在湿氧化系统热交换器装置的入口处混合加压废气和加压废液的装置。 该装置是具有在线第一入口和出口的T形管道构件，以及与所述在线第一入口大致成直角定位的第二入口。 出口连接到管壳式换热器的入口管。 管道通过第二入口将加压的废液流提供给管道构件。 具有周向密封装置的含氧气体供应管道从T形部件的外部延伸穿过第一入口并且终止于超过第一和第二入口的相交点的点。 圆周密封装置密封到第一入口。 在接触从气体供应导管供应的加压含氧气体之前，将进入T形构件的液体加热至选定的升高温度。
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