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    Process for defouling anion exchange resins with chlorine dioxide
    101.
    发明授权
    Process for defouling anion exchange resins with chlorine dioxide 失效
    用氯仿二氧化硅去除阴离子交换树脂的方法

    公开(公告)号：US3787339A

    公开(公告)日：1974-01-22

    申请号：US3787339D

    申请日：1972-09-07

    Applicant: IONICS

    Inventor： HODGDON R ,  ROACH E

    IPC: B01J49/00 ,  B01D15/06 ,  C02B1/76

    CPC classification number: B01J49/57

    Abstract: A process for treating fouled anion exchange resins with a stabilized chlorine dioxide solution for the purpose of regenerating the same for reuse. The process is especially useful for treating anion exchange membranes which have become fouled when employed in the electrodialysis of solutions containing large organic molecules.

    Abstract translation: 用稳定的二氧化氯溶液处理污垢阴离子交换树脂的方法，用于将其再生用于再利用。 该方法对于处理当用于含有大有机分子的溶液的电渗析中时已被弄脏的阴离子交换膜特别有用。

    Ion exchange membranes having a macroporous surface area
    102.
    发明授权
    Ion exchange membranes having a macroporous surface area 失效
    离子交换膜具有大面积的面积

    公开(公告)号：US3749655A

    公开(公告)日：1973-07-31

    申请号：US3749655D

    申请日：1971-06-21

    Applicant: IONICS

    Inventor： HODGDON R

    IPC: B01D67/00 ,  B01D69/02 ,  C08J5/22 ,  C25B13/04 ,  H01M2/16 ,  B01D13/02

    CPC classification number: B01D67/0006 ,  B01D61/46 ,  B01D2321/00 ,  C08J5/2243 ,  C08J2353/02 ,  H01M2/1653

    Abstract: THIS INVENTION IS DIRECTED TO ELECTRODIALYSIS EQUIPMENT PARTICULARLY TO COMPONENTS COMPRISING THE ION EXCHANGE MEMBRANES. THESE MEMBRANES ARE FABRICATED WITH A POLYMERIC MACROPOROUS SURFACE AS CONTRASTED TO THE PRIOR ART MICROPOROUS "GEL" TYPE MEMBRANES. THE MACROPOROUS MEMBRANE SURFACE OR LAYER LESSENS THE TENDENCY FOR MEMBRANES ESPECIALLY THE ANION SELECTIVE TYPE TO FOUL WHEN EMPLOYED IN THE ELECTRODIALYSIS OF SOLUTIONS CONTAINING FOULING CONSTITUENTS. THE MACROPOROUS MEMBRANES ARE OBTAINING BY POLYMERIZING THE LIQUID MONOMERS IN THE PRESENCE OF A NON-POLYMERIZABLE SOLVENT PAIR OF DILUENT COMPRISED OF BOTH A "GOOD" AND A "POOR" SOLVENT, SAID SOLVENT CHARACTERIZED WITH RESPECT TO THE SOLVENTS ABILITY TO SWELL THE CROSSLINKED POLYMER THAT IS FORMED.

    Temperature-compensated current reference
    103.
    发明授权
    Temperature-compensated current reference 失效
    温度补偿电流参考

    公开(公告)号：US3700934A

    公开(公告)日：1972-10-24

    申请号：US3700934D

    申请日：1971-09-23

    Applicant: IONICS

    Inventor： SWAIN CHARLES GARDNER

    IPC: G05F3/24 ,  H03K17/00

    CPC classification number: G05F3/245

    Abstract: Electrical circuits are described that can be connected in series with a voltage source and a load in the same manner as a field-effect current-regulator diode to supply the load with a constant current having a temperature coefficient below 0.01%/*C. from 0* to 60* C. at current levels as low as 10 microamperes and having a voltage coefficient below 0.1%/volt from 5 to 12 volts. Very precise temperature compensation can be achieved at the desired current by adjustment of two resistors in these circuits.

    Abstract translation: 描述了可以以与场效应电流调节二极管相同的方式与电压源和负载串联连接的电路，以向负载提供温度系数低于0.01％/℃的恒定电流。 0至60℃，电流水平低至10微安，电压系数从5伏至12伏特的电压系数低于0.1％/伏特。 通过调整这些电路中的两个电阻可以在所需电流下实现非常精确的温度补偿。

    Analysis of organic and inorganic water pollutants
    104.
    发明授权
    Analysis of organic and inorganic water pollutants 失效
    有机无机水污染物分析

    公开(公告)号：US3672841A

    公开(公告)日：1972-06-27

    申请号：US3672841D

    申请日：1970-12-14

    Applicant: IONICS

    Inventor： FREEMAN DONALD C JR ,  ROGERS LOUIS J

    IPC: G01N31/00 ,  G01N33/18 ,  B01J11/02 ,  G01N31/12

    CPC classification number: G01N33/1846 ,  G01N31/005 ,  Y10T436/235

    Abstract: A METHOD IS PROVIDED FOR REPLENISLING THE CATALYST COMPONENT OF AN ANALYZER ADAPTED TO MEASURE THE TOTAL INORGANIC CARBON CONTENT OF A FLUID SAMPLE, THE NEED FOR WATER ANALYSIS HAS BECOME INCREASINGLY IMPORTANT WITH EXPANDING INTEREST IN THE ABATEMENT OF WATER POLLUTION, AND FOR DETERMINING LEAKS IN VESSELS SUCH AS HEAT EXCHANGERS USED IN INDUSTRY. ONE SET OF PARAMETERS

    OF GREAT UTILITY HAS BEEN THE CONCENTRATIONS OF CARBON; ORGANIC, INORGANIC AND TOTAL.

    Processes for controlling the ph of a sulfur dioxide scrubbing system
    106.
    发明授权
    Processes for controlling the ph of a sulfur dioxide scrubbing system 失效
    用于控制二氧化硫硫化物系统的PH的方法

    公开(公告)号：US3654103A

    公开(公告)日：1972-04-04

    申请号：US3654103D

    申请日：1970-08-03

    Applicant: IONICS

    Inventor： MCRAE WAYNE A

    IPC: B01D53/56 ,  C01B17/60 ,  C01D5/04 ,  B01K1/00 ,  C01D7/34

    CPC classification number: C01B17/60 ,  B01D53/56 ,  C01D5/04

    Abstract: THE SOLUTION THEREBY FORMING BISULFITE. THE REDUCING AGENT CONSUMED MAY BE REFORMED BY ELECTROLYTICALLY REDUCING BUSULFITE AND/OR SULFUR DIOXID IN THE CATHODE COMPARTMENT OF AN ELECTROLYIC CELL WITH THE RESULTING REFORMED REDUCING AGENT RECYCLED FOR ADDITIONAL OXIDANT REMOVAL. THE PH OF THE SYSTEM IS CONTROLLED BY ADDING LIME AND SODA ASH EQUIVALENT TO THE AMOUNT OF SULFUR DIOXIDE OXIDIZED OR BY CRYSTALLIZING SULFATE SALTS OUT OF PART OF THE ANOLYTE BISULFATE EFFLUENT FROM THE ELECTROLYTIC CELLS, THEREBY REMOVING AND RECOVERING SULFURIC ACID FROM THE SYSTEM.

    THIS INVENTION IS DIRECTED TO A CONTINUOUS CYCLIC PROCESS FOR THE ABSORPTION OF SULFUR DIOXIDE AND/OR NITROGEN OXIDES (CAPABLE OF OXIDIZING BISULFITE) INTO SOLUTION FROM A GAS CONTAINING MINOR AMOUNTS OF NITROGEN OXIDES, SULFUR DIOXIDE WITH OR WITHOUT OXYGEN AND/OR OTHER OXIDANTS WITH SUBSEQUENT RECOVERY OF A CONCENTRATED SULFUR DIOXIDE GAS STREAM. ELECTROLYTICALLY PRODUCED REDUCING AGENTS SUCH AS SODIUM DITHIONITE ARE ADDED TO THE ABSORBING SOLUTION TO ABSORB NITROGEN OXIDES, TO CONTROL THE PH OF THE SYSTEM AND ALSO TO PREVENT LOSS OF RECOVERABLE SULFUR DIOXIDE FROM THE UNDESIRED OXIDATION OF SAID SULFUR DIOXIDE WHICH OXIDATION OTHERWISE GENERALLY OCCURS WITHIN THE ABSORBER. SUITABLE REDUCING AGENTS ARE THOSE WHICH WILL PREFERENTIALLY REACT WITH AND REMOVE DISSOLVED OXIDANTS PRESENT IN

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