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    Process gas cooler
    1.
    发明授权
    Process gas cooler 失效
    工艺气体冷却器

    公开(公告)号：US3915224A

    公开(公告)日：1975-10-28

    申请号：US47998674

    申请日：1974-06-17

    申请人： UHDE GMBH FRIEDRICH

    发明人： RICHTER HANS-H ,  MUNDO KLAUS

    IPC分类号： F22G1/00 ,  F22B1/18 ,  F22G3/00 ,  F28D7/08 ,  F28D7/04

    CPC分类号： F22B1/1884 ,  F28D7/08 ,  Y10S165/408

    摘要： A cooler for process gas of temperatures in excess of 750* C in which the gas passes through tubes, the cooling length of which is subdivided into three sections. The sections comprise; first, a hot or inlet section where the tubes are surrounded by a vaporizing liquid; secondly, a medium temperature or intermediate section where the tubes are arranged in a steam space and cooled by the saturated steam produced; and, thirdly, a cool discharge section where the tubes are surrounded by the vaporizing liquid. The tubes are of inverted U-shape and preferably are of serpentine form where one arm of the U has portions overlapping the other arm for greater heat exchange. Vaporizing liquid is recirculated, added to, and cooled by feedwater.

    摘要翻译： 用于气体通过管的超过750℃的过程气体的冷却器，其冷却长度被细分为三个部分。 这些部分包括 第一，热管或入口部分，其中管被汽化液体包围; 其次，中间温度或中间部分，其中管被布置在蒸汽空间中并由产生的饱和蒸汽冷却; 以及第三，冷却放电部分，其中管被汽化液体包围。 管是倒U形的，并且优选地是蛇形形式，其中U的一个臂具有与另一个臂重叠的部分以进行更大的热交换。 蒸发液再循环，加入并由给水冷却。

    Process for the concentration and defluorination of phosphoric acid
    2.
    发明授权
    Process for the concentration and defluorination of phosphoric acid 失效
    磷酸浓度和定义的方法

    公开(公告)号：US3781410A

    公开(公告)日：1973-12-25

    申请号：US3781410D

    申请日：1971-07-12

    申请人： UHDE GMBH FRIEDRICH

    发明人： VON SEMEL G

    IPC分类号： B01D3/34 ,  C01B25/234 ,  C01B25/26

    CPC分类号： B01D3/346 ,  C01B25/2343

    摘要： A PROCESS FOR RAISING THE CONCENTRATION OF PHOSPHORIC ACID FROM THE 30 TO 40 PERCENT TO 70 PERCENT AND MORE AT LOW ENERGY REQUIREMENTS WHILE REMOVING ANY FLUORINE COMPONENTS. WEAK PHOSPHORIC ACID IS CONTACTED AND STRIPPED WITH A LOW BOILING SUBSTANCE THAT IS SUBSTANTIALLY INSOLUBLE IN WATER AND PHOSPHORIC ACID. THE VAPORS ARE THEN CONDENSED, THE CONDENSATES COLLECTED AND SEPARATED, THE WATER EXPELLED IS DISCHARGED, AND THE SUBSTANCE IS RECYCLED IN THE PROCESS.

    Process for the recovery of co2 of very high purity
    6.
    发明授权
    Process for the recovery of co2 of very high purity 失效
    回收非常高纯度的co2的方法

    公开(公告)号：US3193986A

    公开(公告)日：1965-07-13

    申请号：US10246961

    申请日：1961-04-12

    申请人： UHDE GMBH FRIEDRICH

    发明人： FRITZ FORSTER

    IPC分类号： B01D19/00 ,  C01B32/50 ,  C10K1/10

    CPC分类号： B01D19/0036 ,  C01B32/50 ,  C10K1/101 ,  Y02P20/131

    摘要： Carbon dioxide is recovered from a gas containing CO2 by countercurrently scrubbing the gas with a liquid capable of absorbing carbon dioxide at 5-100 Atm., reducing the pressure of the liquid in a turbine to 20-80% of the scrubber pressure and separating the gas, containing the greater part of non-CO2 gas, in a separator; the liquid is then passed to one or more vessels in which the pressure is reduced to 0.3-3.0 Atm. below the pressure in the separator and each preceding vessel, the gas is separated and the liquid passed to a second turbine at a pressure 0.2-2 Atm. higher than the static pressure of the column of liquid between the second turbine and the gas collector in which pure CO2 is separated from the liquid passing from the second turbine and which is located above this turbine. The scrubbing liquid may be water, an aqueous alkaline solution, or an anhydrous liquid absorbent e.g. an aqueous solution of ammonia or an organic derivative or of an alkali metal salt of a weak acid. Gas containing CO2, CO, H2, N2, A and CH4 at 28 Atm. is mixed with gas from separator 3 containing CO2, CO and H2 which is compressed by 4. The mixed gas containing 29% CO2 is fed to scrubber containing H2O at 28 Atm. and is treated to leave 0.3% CO2. Scrubbing H2O from 1 is passed to turbine 2 at 8.9 Atm. yielding gas to 3. H2O from 3 is passed to vessel 5 at 7 Atm. yielding a gas containing CO2, CO and H2 which is vented to atmosphere. H2O from 5 is fed to turbine 6 at a pressure of the water column from 6 to degasifier 7 where 99.2% pure CO2 is obtained. H2O from > is freed from dissolved gases in 8 by aeration and then returned to 1 via pump 9 driven by motor 10 supplementing turbines 2 and 6.

    Process for the recovery of nitrogen monoxide
    9.
    发明授权
    Process for the recovery of nitrogen monoxide 失效
    回收一氧化氮的方法

    公开(公告)号：US3915675A

    公开(公告)日：1975-10-28

    申请号：US37440773

    申请日：1973-06-28

    申请人： UHDE GMBH FRIEDRICH

    发明人： SCHEIBLER ERICH ,  HOPFER KLAUS

    IPC分类号： C01B21/26 ,  C01B21/40 ,  B01D47/00

    CPC分类号： C01B21/26 ,  Y02P20/129

    摘要： A process for the recovery of very pure nitrogen monoxide from a gas stream originating preferably from an ammonia oxidation process and containing nitric oxides, the acid condensates being processed to obtain nitric acid of medium concentration, and water vapour condensate. A mixture of nitric oxides and steam is cooled by a cooling fluid and scrubbed with condensate from a nitric acid distillation unit. The combined acid condensates are degassed and the gas obtained to the product line ahead of the gas scrubbing unit is recycled. The effluent from the degassing unit is distilled to a nitric acid concentration, and the noncondensible gas components are withdrawn from the condenser of the nitric acid distillation unit and admixed to the hot gas stream ahead of the first process step.

    摘要翻译： 一种从优选由氨氧化过程产生并含有一氧化氮的气流中回收非常纯的一氧化氮的方法，该酸缩合物被加工以获得中等浓度的硝酸和水蒸汽冷凝物。 将一氧化氮和蒸汽的混合物通过冷却流体冷却并用来自硝酸蒸馏装置的冷凝物洗涤。 将合并的酸性冷凝物脱气，并将气体洗涤单元前面的产品线获得的气体再循环。 将来自脱气单元的流出物蒸馏至硝酸浓度，并将不可冷凝气体组分从硝酸蒸馏单元的冷凝器中取出，并在第一工艺步骤之前与热气流混合。

    Process for the recovery of deuterium from hydrogen-rich gas
    10.
    发明授权
    Process for the recovery of deuterium from hydrogen-rich gas 失效
    从富含氢气中恢复氘代的方法

    公开(公告)号：US3821361A

    公开(公告)日：1974-06-28

    申请号：US15824171

    申请日：1971-06-30

    申请人： UHDE GMBH FRIEDRICH

    发明人： WALTER S ,  SCHINDEWOLF U

    IPC分类号： B01D53/34 ,  C01B4/00 ,  C01B1/00

    CPC分类号： B01D53/34 ,  C01B4/00

    摘要： A process for the recovery of deuterium from a gas having deuterium values and oxygen bearing impurities by contacting the gas with a solution of sodium or lithium in ammonia to eliminate oxygen-bearing impurities as sparingly soluble reaction products. The NH3-Na or Li solution contacts the synthesis gas saturated with NH3 having oxygen impurities and deuterium values therein and the deuterium rich ammonia gases from a deuterium enrichment unit in order to achieve saturation of higher deuterium concentration. The ammonia gases saturated with deuterium values are finally passed on to the deuterium enrichment unit to recover deuterium values and to produce ammonia depleted of deuterium. The preparation and/or stock tank for the Na -or Li- solution in NH3 is provided with a lining material selected from the group consisting of copper, non-ferrous metal and plastics because the NH3-Na solution resides in these containers for an extended period of time.