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    Recovery and regeneration of spent MHD seed material by the formate process
    2.
    发明授权
    Recovery and regeneration of spent MHD seed material by the formate process 失效
    通过甲酸过程回收和再生废弃的MHD种子材料

    公开(公告)号：US5057294A

    公开(公告)日：1991-10-15

    申请号：US421617

    申请日：1989-10-13

    申请人： Atul C. Sheth ,  Jeffrey K. Holt ,  Darryll G. Rasnake ,  Robert L. Solomon ,  Gregory L. Wilson ,  Howard R. Herrigel

    发明人： Atul C. Sheth ,  Jeffrey K. Holt ,  Darryll G. Rasnake ,  Robert L. Solomon ,  Gregory L. Wilson ,  Howard R. Herrigel

    IPC分类号： H02K44/08

    CPC分类号： H02K44/08

    摘要： The specification discloses a spent seed recovery and regeneration process for an MHM power plant employing an alkali metal salt seed material such as potassium salt wherein the spent potassium seed in the form of potassium sulfate is collected from the flue gas and reacted with calcium hydroxide and carbon monoxide in an aqueous solution to cause the formation of calcium sulfate and potassium formate. The pH of the solution is adjusted to supress formation of formic acid and to promote precipitation of any dissolved calcium salts. The solution containing potassium formate is then employed to provide the potassium salt in the form of potassium formate or, optionally, by heating the potassium formate under oxidizing conditions to convert the potassium formate to potassium carbonate.

    摘要翻译： 该说明书公开了使用碱金属盐种子材料如钾盐的MHM发电厂的废种子回收和再生方法，其中从烟道气中收集硫酸钾形式的废钾种子并与氢氧化钙和碳 一氧化碳在水溶液中引起硫酸钙和甲酸钾的形成。 调节溶液的pH以抑制甲酸的形成并促进任何溶解的钙盐的沉淀。 然后使用含有甲酸钾的溶液提供甲酸钾形式的钾盐，或任选地通过在氧化条件下加热甲酸钾将甲酸钾转化为碳酸钾。

    Prevention of solute deposition fouling in membrane processes
    3.
    发明授权
    Prevention of solute deposition fouling in membrane processes 失效
    防止膜过程中溶质沉积污染

    公开(公告)号：US4207183A

    公开(公告)日：1980-06-10

    申请号：US904981

    申请日：1978-05-11

    申请人： Howard R. Herrigel

    发明人： Howard R. Herrigel

    IPC分类号： B01D61/04 ,  B01D9/02 ,  B01D61/52 ,  B01D61/54 ,  B01D65/08 ,  C02F1/44 ,  C02F1/46 ,  C23F20060101 ,  B01D13/02

    CPC分类号： B01D65/08 ,  B01D2311/04 ,  B01D2321/168

    摘要： A method for preventing fouling in apparatus used to separate a solvent from a solute which includes a semi-permeable membrane barrier is disclosed. The method comprises providing a quantity of nucleation crystals in the fluid stream passing through the separation apparatus which causes preferential precipitation of the solute thereby eliminating the formation of deposits on the membrane barrier. An apparatus for carrying out the process of the invention is also disclosed.

    摘要翻译： 公开了一种防止在包括半透膜隔离层的溶质中分离溶剂的设备中的结垢的方法。 该方法包括在通过分离装置的流体流中提供一定量的成核晶体，其导致溶质的优先沉淀，从而消除膜屏障上的沉积物的形成。 还公开了一种用于实施本发明的方法的设备。

    Method of maintaining adequate seed crystal in preferential precipitation systems
    4.
    发明授权
    Method of maintaining adequate seed crystal in preferential precipitation systems 失效
    在优先沉淀系统中维持足够晶种的方法

    公开(公告)号：US4618429A

    公开(公告)日：1986-10-21

    申请号：US682441

    申请日：1984-12-14

    申请人： Howard R. Herrigel

    发明人： Howard R. Herrigel

    IPC分类号： B01D65/08 ,  C02F1/04 ,  B01D13/00

    CPC分类号： C02F1/042 ,  B01D61/08 ,  B01D61/46 ,  B01D65/08 ,  B01D2321/00

    摘要： A method for ensuring an adequate amount of seed crystal in solution concentration systems employing preferential precipitation to control scaling and fouling over relatively low concentration factors. In systems concentrating solutions at concentration factors between 1 and 2, the method comprises determining the minimum amount of seed crystal necessary for the solution being concentrated at a concentration factor of about 10 or greater and introducing into the feeds solution a percentage of this amount according to the equation, % introduced=25.times.(C.F.).times.(C.F..sub.MAX /C.F..sub.MAX -1).

    摘要翻译： 一种确保在采用优先沉淀的溶液浓度系统中足够量的晶种以控制比较低浓度因子的结垢和结垢的方法。 在浓度为1和2之间的浓度系数的系统浓缩溶液中，该方法包括确定浓度为约10或更大的浓缩溶液所需的晶种的最小量，并根据 方程式，％引入= 25x（CF）x（CFMAX / CFMAX-1）。