Process for the production of concentrated sulfuric acid and/or oleum
from a wet sulfur dioxide feed
    1.
    发明授权
    Process for the production of concentrated sulfuric acid and/or oleum from a wet sulfur dioxide feed 失效
    用于从湿二氧化硫进料生产浓硫酸和/或发烟硫酸的方法

    公开(公告)号:US4064223A

    公开(公告)日:1977-12-20

    申请号:US655027

    申请日:1976-02-03

    CPC分类号: C01B17/7655

    摘要: Concentrated sulfuric acid and/or oleum is prepared by the catalytic oxidation of sulfur dioxide to sulfur trioxide using a gas containing water vapor, SO.sub.2 and oxygen. The catalytic oxidation is carried out in two stages. After the first stage an intermediate cooling of the reaction gas, and absorption of the water vapor content and an intermediate absorption of the sulfur trioxide formed in the first stage are performed. In the second stage the unreacted SO.sub.2 is catalytically oxidized to SO.sub.3 in the absence of water vapor, this SO.sub.3 being absorbed in sulfuric acid. An apparatus for carrying out the process is disclosed including a primary catalysis stage, means for the intermediate cooling of the reaction gas, means for the removal of the water vapor content, means for the intermediate absorption of the SO.sub.2 of the first stage, a secondary stage for the catalytic oxidation of the unreacted sulfur dioxide in the absence of water and an end absorption unit for SO.sub.2 absorption produced in the secondary stage.

    摘要翻译: 通过使用含有水蒸汽,SO 2和氧气的二氧化硫催化氧化成三氧化硫来制备浓硫酸和/或发烟硫酸。 催化氧化分两个阶段进行。 在第一阶段之后,进行反应气体的中间冷却,以及在第一阶段中形成的水​​蒸气含量的吸收和三氧化硫的中间吸收。 在第二阶段,在没有水蒸气的情况下,未反应的SO 2被催化氧化成SO 3,该SO 3被吸收在硫酸中。 公开了一种用于实施该方法的装置,包括一级催化级,用于中间冷却反应气体的装置,用于除去水汽含量的装置,用于中间吸收第一级SO2的装置,二级 在不存在水的情况下催化氧化未反应的二氧化硫的阶段,以及在次级阶段产生的SO 2吸收的终端吸收单元。

    Process of producing concentrated sulfuric acid
    2.
    发明授权
    Process of producing concentrated sulfuric acid 失效
    生产浓硫酸的工艺

    公开(公告)号:US4368183A

    公开(公告)日:1983-01-11

    申请号:US203285

    申请日:1980-11-03

    CPC分类号: C01B17/775

    摘要: SO.sub.2 -containing, hot gases are catalytically converted in part in a first contacting stage. The water and the SO.sub.3 formed is removed from the reaction gas. The remaining gas is heated and then supplied to the second contacting stage. The water vapor content in the reaction gas delivered by a first contacting stage corresponds to an H.sub.2 O/SO.sub.3 mole ratio below 1. The reaction gas delivered by the first contacting stage is precooled by an indirect heat exchange to such a temperature that the wall temperatures of the heat exchanger are above the dew point temperature of the reaction gas. The precooled reaction gas entering a condensing stage is contacted in a venturi with cocurrent sulfuric acid of 98.0 to 100% concentration and a temperature of at least 95.degree. C. The exit temperature of the gas from the condensing stage is maintained at least at 120.degree. C. The gas rises in a succeeding absorption stage through a packing layer, which is contacted with trickling sulfuric acid having a concentration of 98 to 100% and a temperature of 70.degree. to 120.degree. C. The dry gas which leaves the absorption stage and has been freed from SO.sub.3 is maintained at a temperature which is as high as or slightly higher than the temperature of the acid as it initially contacts the packing in the absorption stage. The sulfuric acid concentration is controlled by a supply of water into the sulfuric acid in the condensing and/or absorption stage.

    摘要翻译: 含SO 2的热气体部分地在第一接触阶段被催化转化。 所形成的水和SO 3从反应气体中除去。 将剩余气体加热,然后供给到第二接触级。 由第一接触阶段输送的反应气体中的水蒸汽含量对应于低于1的H 2 O / SO 3摩尔比。由第一接触阶段输送的反应气体通过间接热交换预冷至如此温度 热交换器高于反应气体的露点温度。 进入冷凝阶段的预冷反应气体在文氏管中与98.0至100%浓度的并流硫酸和至少95℃的温度接触。来自冷凝级的气体的出口温度保持在至少120℃ C.气体在接下来的吸收阶段通过填充层升高,该填充层与浓度为98-100%,温度为70-120℃的滴流硫酸接触。离开吸收阶段的干燥气体 已被除去的SO3保持在与吸收阶段最初接触填料时酸的温度高或略高的温度。 通过在冷凝和/或吸收阶段向硫酸中供应水来控制硫酸浓度。

    Safety means for a vertical connection of two members
    3.
    发明授权
    Safety means for a vertical connection of two members 失效
    两个构件垂直连接的安全手段

    公开(公告)号:US07232274B2

    公开(公告)日:2007-06-19

    申请号:US10814086

    申请日:2004-03-31

    IPC分类号: F16D9/00

    摘要: A locking device is provided in order to prevent a ceiling-mounted stand comprising one or two arms and one stand head and being part of a ceiling-mounted medical supply unit from falling down should a pivot connection of two arms tear apart. The locking device comprises at least two shell segments (1) that reach around the pivot connection and are provided with a first and a second segment end (3, 4) and with an upper and a lower edge (5, 6) adjacent to each of which an engaging section (7, 8) facing the pivot connection is provided, as well as an upper and a lower washer (9, 29) that is assembled of at least first and second washer segments (11, 12) that are, in the installed state, connected to the pivot connection above and below said pivot connection, whereby the washer segments each comprise engaging sections (13, 14) that are associated with the engaging sections (7, 8) of the shell segments.

    摘要翻译: 提供了一种锁定装置,以便防止包括一个或两个臂和一个支架头的天花板安装架,并且当天花板安装的医疗供应单元的一部分在两个臂的枢轴连接分开时落下。 锁定装置包括至少两个到达枢转连接的壳段(1),并且具有第一和第二分段端(3,4)以及与每一个相邻的上边缘和下边缘(5,6) 其中设置有面向枢转连接的接合部分(7,8),以及由至少第一和第二垫圈段(11,12)组装的上部和下部垫圈(9,29) 在安装状态下,连接到所述枢轴连接件上方和下方的枢轴连接,由此垫圈段各自包括与壳段的接合部分(7,8)相关联的接合部分(13,14)。

    Manufacture of porous carbon membranes
    6.
    发明授权
    Manufacture of porous carbon membranes 失效
    多孔碳膜的制造

    公开(公告)号:US4919860A

    公开(公告)日:1990-04-24

    申请号:US218280

    申请日:1988-07-13

    摘要: The invention relates to a process for making porous carbon membranes and membranes which can made by this process. As starting material, a porous membrane from an acrylonitril-polymer is used. The starting material is pretreated with a hydrazine solution, followed by preoxidation and carbonization. The process enables carbon membranes to be made with selectively adjusted pore sizes and tight pore size distribution. The pore sizes can lie in the ultrafiltration or microfiltration range. The membranes are suitable for separation processes, in which chemically aggressive media are used and for high-temperature processes. They can be used wherever electrical conductivity of the membranes is required.

    摘要翻译: 本发明涉及通过该方法制造多孔碳膜和膜的方法。 作为原料,使用来自丙烯腈聚合物的多孔膜。 原料用肼溶液预处理,然后进行预氧化和碳化。 该方法使得可以选择性地调节孔径和紧密的孔径分布来制备碳膜。 孔径可以在超滤或微滤范围内。 该膜适用于分离过程,其中使用化学腐蚀性介质和高温过程。 它们可以在需要电导率的地方使用。

    SYSTEM COMPRISING A HOUSEHOLD APPLIANCE AND A PEDESTAL OR BASE ASSEMBLY
    8.
    发明申请
    SYSTEM COMPRISING A HOUSEHOLD APPLIANCE AND A PEDESTAL OR BASE ASSEMBLY 审中-公开
    系统包括家用电器和底座或基座组件

    公开(公告)号:US20070249212A1

    公开(公告)日:2007-10-25

    申请号:US11737431

    申请日:2007-04-19

    IPC分类号: H01R13/62

    摘要: A system includes a household appliance, a pedestal and an interface. The household appliance includes a controller and a control panel. The control panel has a control element disposed therein. The pedestal includes a housing having an upper part providing a support surface for the household appliance. The pedestal also includes a drawer disposed in the housing, the drawer including a front panel covering a front of the housing and including a locking device operatively connected by a cable for locking and unlocking the locking device. The interface connects the cable to the pedestal and includes a male/female connector. A first part of the male/female connector is disposed on an underside of the household appliance, and a corresponding part of the male/female connector is disposed on the upper part of the housing of the pedestal so as to contact with the first part of the male/female connector.

    摘要翻译: 系统包括家用电器,基座和接口。 家用电器包括控制器和控制面板。 控制面板具有设置在其中的控制元件。 基座包括具有提供家用电器的支撑表面的上部的壳体。 基座还包括设置在壳体中的抽屉,抽屉包括覆盖壳体的前部的前面板,并且包括通过电缆可操作地连接的锁定装置,用于锁定和解锁锁定装置。 该接口将电缆连接到基座,并包括一个公/母连接器。 阳/阴连接器的第一部分设置在家用电器的下侧,并且阳/阴连接器的对应部分设置在基座的壳体的上部,以便与第一部分接触 公/母连接器。

    Ultrafiltration membrane of polyamide
    9.
    发明授权
    Ultrafiltration membrane of polyamide 失效
    聚酰胺超滤膜

    公开(公告)号:US4595503A

    公开(公告)日:1986-06-17

    申请号:US659072

    申请日:1984-10-10

    CPC分类号: B01D71/56 B01D69/06

    摘要: A membrane is disclosed of polyamide, a copolyamide or a mixture of polyamides, suitable for ultrafiltration and composed of an ultrafiltration skin and a backing layer. The pore size in the backing layer increases with distance from the ultrafiltration skin. The membrane is prepared by dissolving a polyamide in at least 75% formic acid, applying a casting solution, containing about 12-22% by weight polyamide and about 1-7% by weight polyethylene glycol in formic acid which has been brought to a temperature of below about 18.degree. C., as a thin layer onto a carrier foil resistant to the components of the solution, introducing the casting solution on the carrier foil into a precipitation and washing bath, withdrawing the casting solution as a coagulated and washed membrane from the carrier foil, stretching in at least one direction and subsequently drying this coagulated and washed membrane.

    摘要翻译: 公开了适用于超滤并由超滤皮肤和背衬层组成的聚酰胺,共聚酰胺或聚酰胺混合物的膜。 背衬层中的孔径随着超滤皮肤的距离而增加。 通过将聚酰胺溶解在至少75%的甲酸中制备膜,将浇铸溶液施加到含有约12-22重量%聚酰胺和约1-7重量%聚乙二醇的甲酸中,所述甲酸已经达到温度 低于约18℃,作为对溶液成分耐受的载体箔上的薄层,将载体箔上的浇铸溶液引入沉淀和洗涤浴中,将浇铸溶液作为凝结和洗涤的膜从 载体箔,至少沿一个方向拉伸,随后干燥该凝结和洗涤的膜。

    Procedure for the thermal treatment of powdered and granulated catalysts
and the like
    10.
    发明授权
    Procedure for the thermal treatment of powdered and granulated catalysts and the like 失效
    粉末和粒状催化剂等的热处理步骤

    公开(公告)号:US4399350A

    公开(公告)日:1983-08-16

    申请号:US273197

    申请日:1981-08-21

    IPC分类号: B01J8/16 B01J37/08 F27B9/06

    CPC分类号: B01J8/16 B01J37/08

    摘要: Process for the thermal treatment of powdered and granulated catalysts, catalyst intermediate products, and inorganic substances, which are usable as constituents of catalysts or as auxiliary agents for the production of catalysts. The known process material is placed on a heated vibrating conveyor and there, in the form of a thin layer, in which the particles of the process material are moved with a larger horizontal and a smaller vertical component, heated and allowed to cool either outside the vibrating conveyor or in a separate vibrating conveyor or in the outlet portion of the first vibrating conveyor.

    摘要翻译: 用于粉末和颗粒化催化剂,催化剂中间产物和无机物质的热处理方法,其可用作催化剂的成分或作为催化剂生产的辅助剂。 将已知的处理材料放置在加热的振动输送机上,并且其中以薄层的形式,处理材料的颗粒以较大的水平和较小的垂直分量移动,加热并允许其在 振动输送机或在单独的振动输送机中或在第一振动输送机的出口部分中。