摘要:
An apparatus and process for recovering elemental sulfur from a H2S-containing waste gas stream are disclosed, along with a method of making a preferred catalyst for catalyzing the process. The apparatus preferably comprises a short contact time catalytic partial oxidation reactor, a cooling zone, and a sulfur condenser. According to a preferred embodiment of the process, a mixture of H2S and O2 contacts the catalyst very briefly (i.e, less than about 200 milliseconds). Some preferred catalyst devices comprise a reduced metal such as Pt, Rh, or Pt—Rh, and a lanthanide metal oxide, or a pre-carbided form of the metal. The preferred apparatus and process are capable of operating at superatmospheric pressure and improve the efficiency of converting H2S to sulfur, which will reduce the cost and complexity of construction and operation of a sulfur recovery plant used for waste gas cleanup.
摘要:
A method, system and catalysts for improving the yield of syngas from the catalytic partial oxidation of methane or other light hydrocarbons is disclosed. The increase in yield and selectivity for CO and H2 products results at least in part from the substitution of H2S partial oxidation to elemental sulfur and water for the combustion of light hydrocarbon to CO2 and water.
摘要:
A method for generating syngas having a H2:CO ratio of less than 2:1 including selecting a predetermined desired syngas H2:CO molar ratio, selecting a hydrocarbon with a natural H2:CO molar ratio less than the desired ratio, selecting a hydrocarbon with a natural H2:CO molar ratio greater than the desired ratio, mixing the two hydrocarbons such that the natural H2:CO molar ratio of the mixture is the desired ratio, and catalytically partially oxidizing the mixture to produce syngas with the desired ratio.
摘要:
A process and catalyst are disclosed for reducing coking in hydrocarbon processing reactions. The preferred embodiments employ a sulfur-containing material such as hydrogen sulfide to reduce catalyst susceptibility to deactivation from carbon deposits formed during processing.
摘要:
A process and system for producing synthesis gas by a SPOC® enhanced catalytic partial oxidation process is disclosed. Light hydrocarbons in a H2S-containing feed gas are partially oxidized to produce hydrogen and carbon monoxide over a catalyst that simultaneously oxidizes the H2S to produce elemental sulfur. A reaction in which H2S is partially oxidized to elemental sulfur and water takes place instead of a secondary reaction in which a portion of the light hydrocarbon feed is combusted to form CO2 and water. An increase in yield and selectivity for CO and H2 products results, and readily recoverable elemental sulfur is also produced.
摘要:
A multistage oxygen-added catalytic partial oxidation process and apparatus for converting H2S in an acid gas stream to elemental sulfur and water are disclosed. Each staged addition of oxygen or air at the top of the catalyst bed and at points along the catalyst bed maintain oxygen-limited H2S catalytic partial oxidation conditions whereby incidental SO2 production is minimized.
摘要翻译:公开了一种用于将酸性气流中的H 2 S转化为元素硫和水的多级加氧催化部分氧化方法和装置。 在催化剂床的顶部和沿着催化剂床的点处分阶段加入氧气或空气保持氧气限制的H 2 N 2催化部分氧化条件,由此附带的SO 2 生产最小化。
摘要:
Apparatus and process for recovering elemental sulfur from a H2S-containing waste gas stream are disclosed. The apparatus preferably comprises a first reaction zone for carrying out the catalytic partial oxidation of H2S, a second reaction zone for the catalytic partial reduction of any incidental SO2 produced in the first reaction zone, and a cooling zone including a sulfur condenser. According to a preferred embodiment of the process, a mixture of H2S and O2 contacts a catalyst in the first reaction zone very briefly (i.e, less than about 200 milliseconds) producing primarily S0 and H2O. Some SO2 is also present in the first stage product gas mixture. A reductant gas (e.g. CO, or CH4 or natural gas) is fed together with the first stage product gas mixture to a second catalytic reaction zone where the partial reduction of the SO2 component to elemental sulfur and CO2 is carried out.
摘要:
A process for purifying a light hydrocarbon stream containing H2S is disclosed in which the selective catalytic partial oxidation of the H2S component is carried out while the hydrocarbon components slip through substantially unconverted. A catalyst that favors the partial oxidation of H2S over conversion of the hydrocarbon component of a gaseous H2S-light hydrocarbon mixture is employed. Apparatus for selectively cleaning up light hydrocarbon streams containing low concentrations (e.g., less than 25 vol. %), and apparatus for selectively cleaning up light hydrocarbon streams having higher concentrations (e.g., greater than 25 vol. %) of H2S are also disclosed.
摘要翻译:公开了一种用于纯化含有H 2 S的轻质烃流的方法,其中进行H 2 S 2组分的选择性催化部分氧化,同时烃组分滑过 基本未转换 采用有利于H 2 S 2部分氧化的催化剂超过气态H 2 S-S / S轻烃混合物的烃组分的转化。 用于选择性清洗含有低浓度(例如小于25体积%)的轻烃流的装置,以及用于选择性清洗具有较高浓度(例如大于25体积%)H 2的轻质烃流的装置 还公开了S。
摘要:
The disclosed sulfur recovery system and process avoid some of the operational problems of conventional Claus plants and processes by replacing the reaction burner and furnace tube of a conventional Claus plant with a more efficient short contact time catalytic reactor assembly containing a SPOC™ catalyst that operates efficiently at elevated temperatures. Such Claus plant modification also reduces or avoids the negative effects of hydrocarbons, CO2 and ammonia in Claus sulfur plant feeds, and permits efficient processing of dilute to concentrated H2S feeds. The disclosed modification makes possible the expansion of Claus plant capacity at lower cost.
摘要翻译:公开的硫回收系统和方法通过用更有效的短接触时间催化反应器组件代替传统的克劳斯设备的反应燃烧器和炉管来避免常规克劳斯设备和方法的一些操作问题,所述反应器包含SPOC TM催化剂, 在高温下有效运行。 克劳斯植物改性还可以降低或避免克劳斯硫磺植物饲料中碳氢化合物二氧化碳和氨的负面影响,并允许有效处理稀释至浓缩的H 2 S 2饲料 。 所公开的修改使得可以以较低的成本扩展克劳斯设备的容量。
摘要:
A process is disclosed for removing/recovering sulfur from a gas stream using a Claus-type reactor followed by contact with a regenerable sorbent and recycle of SO2 from the sorbent regeneration to the Claus-type reactor feed.