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    Processes for controlling the ph of a sulfur dioxide scrubbing system
    1.
    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

    Deionization process
    3.
    发明授权
    Deionization process 失效
    分解过程

    公开(公告)号：US3589999A

    公开(公告)日：1971-06-29

    申请号：US3589999D

    申请日：1968-10-25

    Applicant: IONICS

    Inventor： MCRAE WAYNE A ,  KATZ WILLIAM E

    IPC: B01D15/04 ,  B01J39/04 ,  B01J47/04 ,  B01J49/00

    CPC classification number: B01J47/04 ,  B01J39/04 ,  B01J49/08 ,  B01J41/04

    Abstract: THE INVENTION IS DIRECTED TO THE DEIOIZATION OF WATER BY EMPLOYING CATION EXCHANGE RESINS IN THE ALKALINE EARTH FORM SUCH AS CALCIUM AND ANION EXCHANGE RSINS IN THE CARBONATE FORM. THE CALCIUM AND CARBONATE IONS RELEASED FROM THE RESIN DURING THE DEIONIZATION PROCESS PRECIPITATES OUT AS INSOLUBLE CALCIUM CARBONATE TO GIVE AN EFFLUENT FROM THE RESIN EXCHANGER OF POTABLE WATER. REGENERATION OF THE RESINS BACK TO THEIR INITIAL IONIC FORM MAY BE ACCOMPLISHED IN A MIXED BED WITHOUT THE NECESSITY OF SEPARATING THE RESINS. REGENERATION IS PREFORMED BY CONTACTING THE BED WITH A LIME SLURRY, RINSING FREE OF UNABSORBED CALCIUM AND HYDROCIDE IONS AND THEN TREATING WITH CO2. TO CARBONATE THE ANION RESIN. THE RESIN IS THEN READY FOR ANOTHER DEIONIZATION CYCLE.

    Removal of acidic gases from gas streams
    6.
    发明授权
    Removal of acidic gases from gas streams 失效
    从气体流中去除酸性气体

    公开(公告)号：US3554895A

    公开(公告)日：1971-01-12

    申请号：US3554895D

    申请日：1969-05-19

    Applicant: IONICS

    Inventor： MCRAE WAYNE A ,  BROWN DANIEL L ,  MCCRIFF STUART G

    IPC: B01D53/14 ,  B01D13/02

    CPC classification number: B01D53/1468 ,  B01D53/1481 ,  B01D53/1493

    Abstract: THIS IS A CYCLIC PROCESS FOR THE REMOVAL AND RECOVERY OF SULFUR DIOXIDE FROM WASTE STACK GASES TO LESSEN ATMOSPHERIC POLLUTION. THE PROCESS INVOLVES: (A) ELECTROLYTICALLY CONVERTING A SALT SOLUTION INTO AN ACID AND BASE; (B) EMPLOYING THE BASE TO ABSORB THE SULFUR DIOXIDE FROM THE WASTE GAS; (C) NEUTRALIZING THE RESULTING SPENT BASE WITH THE ELECTROLYTICALLY PRODUCED ACID TO REFORM THE ORIGINAL SALT SOLUTION AND TO REALEASE THE ABSORBED SULFUR DIOXIDE GAS, AND

    (D) RECYCLING THE SALT SOLUTION TO THE ELECTROLYTIC CELL AND RECOVERING SULFUR DIOXIDE GAS.

    Method and apparatus for separating weakly ionizable substances from fluids containing the same
    10.
    发明授权
    Method and apparatus for separating weakly ionizable substances from fluids containing the same 失效
    用于从含有该物质的液体中分离弱电离物质的方法和装置

    公开(公告)号：US3896015A

    公开(公告)日：1975-07-22

    申请号：US74715868

    申请日：1968-07-24

    Applicant: IONICS

    Inventor： MCRAE WAYNE A

    IPC: B01D53/32 ,  B01D61/42 ,  C10G31/11 ,  C10G32/02 ,  B01D13/02 ,  B01K1/00

    CPC classification number: C10G32/02 ,  B01D53/326 ,  B01D61/445 ,  B01D61/50 ,  B01D69/06 ,  C10G31/11

    Abstract: This invention is directed to apparatus and methods for separating weakly ionizable substances from mixtures of the same such as carbon dioxide from an enclosed atmosphere. One method employs a four compartment electrolytic cell comprised of end electrodes, a planar anion exchange membrane therebetween, a corrugated cation exchange membrane between and in contact with the anode electrode and the planar membrane and a corrugated anion exchange membrane between and in contact with the cathode electrode and the planar membrane. The projections of each corrugated membrane make point contact with the adjacently placed electrode and planar membrane to form an anode, stripper, scrubber and cathode compartment. In operation the CO2 contaminated air is passed into the scrubber compartment; water is passed through the remaining compartments and a D.C. current is passed between the electrodes to result in the recovery of partially purified air from the scrubber compartment.

    Abstract translation: 本发明涉及从弱封闭气氛中分离弱离子化物质与二氧化碳混合物的方法。 一种方法采用四端电解池，其中包括端电极，其间的平面阴离子交换膜，阳极电极和平面膜之间并与阴极接触的波纹阳离子交换膜和与阴极接触的波纹状阴离子交换膜 电极和平面膜。 每个波纹膜的突起与相邻放置的电极和平面膜接触点形成阳极，汽提器，洗涤器和阴极室。 在操作中，CO2污染的空气进入洗涤室; 水通过剩余的隔室，直流电流在电极之间通过，导致从洗涤室回收部分净化的空气。

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