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    Process for production of sodium bisulfite
    3.
    发明授权
    Process for production of sodium bisulfite 失效
    亚硫酸氢钠生产工艺

    公开(公告)号：US07985396B2

    公开(公告)日：2011-07-26

    申请号：US12171792

    申请日：2008-07-11

    Applicant: James Kisielewski ,  Don Robertson

    Inventor： James Kisielewski ,  Don Robertson

    IPC: C01B17/62 ,  C01B17/42

    CPC classification number: C01D5/14

    Abstract: Processes for producing sodium bisulfite from sodium sulfite purge streams are disclosed which enable recovery of additional resource material including sodium bisulfite.

    Abstract translation: 公开了从亚硫酸钠吹扫流产生亚硫酸氢钠的方法，其可以回收包括亚硫酸氢钠在内的其它资源材料。

    Apparatus for continuous calcining in noxious gas
    4.
    发明授权
    Apparatus for continuous calcining in noxious gas 失效
    用于连续煅烧有害气体的设备

    公开(公告)号：US5096675A

    公开(公告)日：1992-03-17

    申请号：US446029

    申请日：1989-12-05

    Applicant: Youngbae Park

    Inventor： Youngbae Park

    IPC: B01J6/00 ,  C01B17/42 ,  C09K11/56 ,  F27B9/04 ,  F27B9/26 ,  F27D3/00

    CPC classification number: C09K11/567 ,  B01J6/001 ,  C01B17/42 ,  F27B9/26 ,  F27D3/0033

    Abstract: Materials to be calcined are introduced through an outer entrance into a front chamber while keeping an inner entrance closed. The outer entrance is then closed, the inner entrance is opened, and the materials are advanced into a calcining furnace through the inner entrance and are calcined therein. The calcined materials are then advanced into a rear chamber through an inner exit while an outer exit is kept closed. The inner exit then is closed, the outer exit is opened, and the calcined materials are carried out of the rear chamber through the outer exit. The calcining apparatus includes a tubular calcining furnace. A feed pipe and an exhaust pipe for reaction gases are attached to both ends of the furnace. The apparatus also includes a front chamber and a rear chamber, each having an inner entrance/exit and an outer entrance/exit. The front chamber and the rear chamber are also attached to the exhaust pipe. Finally, the calcining apparatus includes a carrier containing the materials to be calcined which is passed through the front chamber, the tubular calcining furnace, and the rear chamber, consecutively.

    Abstract translation: 将要煅烧的材料通过外部入口引入前室，同时保持内部入口封闭。 然后关闭外部入口，内部入口打开，并且材料通过内部入口进入煅烧炉中并在其中煅烧。 煅烧后的材料然后通过内部出口进入后室，而外部出口保持关闭。 然后关闭内部出口，打开外部出口，并且煅烧的材料通过外部出口从后室进行。 煅烧装置包括管状煅烧炉。 用于反应气体的进料管和排气管连接到炉的两端。 该装置还包括前室和后室，每个具有内入口/出口和外入口/出口。 前室和后室也连接到排气管。 最后，煅烧装置包括一个载体，它含有通过前室，管状煅烧炉和后室的待煅烧材料。

    Production of polysulfide with PTFE coated catalyst
    7.
    发明授权
    Production of polysulfide with PTFE coated catalyst 失效
    用PTFE涂层催化剂生产多硫化物

    公开(公告)号：US4024229A

    公开(公告)日：1977-05-17

    申请号：US468471

    申请日：1974-05-09

    Applicant: Glen C. Smith ,  Frederick W. Sanders

    Inventor： Glen C. Smith ,  Frederick W. Sanders

    IPC: C01B17/34 ,  C01D1/04 ,  C01B17/42

    CPC classification number: C01B17/34 ,  C01D1/04

    Abstract: Sodium polysulfide is prepared by the oxidation of sodium sulfide or sodium hydrosulfide, and by using new procedures and systems described, the production of thiosulfate can be markedly reduced and, in some cases, eliminated. The oxidant is air, oxygen or oxygen in mixture with other gases, the reductant is aqueous sodium sulfide or sodium hydrosulfide and the reaction is carried out with both reactants in non-flooded contact with a solid catalyst material, of which a typical example is a particulate carbon treated with polytetrafluoroethylene (PTFE). The reaction is typically conducted at atmospheric pressure and without the application of heat, with the oxidant and the reductant being in interfacial contact with each other, but only, insofar as possible, at sites where both are simultaneously in contact with a catalyst which is prevented from being flooded by either the oxidant or reductant. Sodium polysulfide and sodium hydroxide are produced, and are useable in treatment of lignocellulose materials. Various arrangements, materials and processes are also disclosed.

    Abstract translation: 通过硫化钠或硫氢化钠的氧化制备多硫化钠，并且通过使用所述的新方法和体系，硫代硫酸盐的生产可以显着降低，并且在某些情况下被消除。 氧化剂是与其他气体混合的空气，氧气或氧气，还原剂是硫化钠水溶液或氢硫化钠，并且两种反应物都与固体催化剂材料非淹没接触进行反应，其典型的例子是 用聚四氟乙烯（PTFE）处理的颗粒碳。 反应通常在大气压下进行并且不施加热量，氧化剂和还原剂彼此界面接触，但只要尽可能在两者同时与催化剂接触的位置处被阻止 不被氧化剂或还原剂淹没。 生产多硫化钠和氢氧化钠，可用于木质纤维素材料的处理。 还公开了各种布置，材料和工艺。

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