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299 条记录 (耗时 0.012 秒)

    Process for the treatment of carburizing salt wastes
    81.
    发明授权
    Process for the treatment of carburizing salt wastes 失效
    渗碳盐废物处理工艺

    公开(公告)号：US3953570A

    公开(公告)日：1976-04-27

    申请号：US537448

    申请日：1974-12-30

    申请人： Wolfgang Muller ,  Lothar Witzke

    发明人： Wolfgang Muller ,  Lothar Witzke

    IPC分类号： B09B3/00 ,  A62D3/33 ,  A62D101/40 ,  A62D101/45 ,  C01D3/06 ,  C01F11/18 ,  C02F1/04 ,  C02F1/62 ,  C02F1/66 ,  C02F9/00 ,  C02F11/00 ,  C23C8/40 ,  C01F1/00

    CPC分类号： A62D3/33 ,  C01D3/06 ,  C01F11/188 ,  C02F1/048 ,  C02F1/66 ,  C23C8/40 ,  A62D2101/40 ,  A62D2101/45 ,  C01P2006/34 ,  C02F2101/18

    摘要： This invention relates to a process for the treatment of the reaction mass produced during the joint elimination of barium-containing nitrite-/nitrate-bearing carburizing salt wastes and cyanide-/cyanate-bearing wastes by ignition of the dry mixture at elevated temperatures, comprising suspending the reaction mass in water and eitherA. neutralizing the alkaline suspension obtained with concentrated nitric acid to a pH value of 6, the feed velocity of the acid and conditions of agitation being so selected that the pH value of the suspension will at no time fall below pH 6, and separating the barium carbonate,OrB. freeing the alkaline suspension obtained from barium carbonate, and neutralizing the filtrate with concentrated nitric acid to a pH value of 7.2, the feed velocity of the acid and conditions of agitation being so selected that the pH value of the suspension will at no time fall below pH 7.2, and separating the precipitated sodium bicarbonate,Concentrating the clear solutions obtained according to (a) or (b) to a water content of 10 - 20% by weight, separating precipitated sodium chloride, and evaporating the residual solution to dryness.

    摘要翻译： 本发明涉及一种处理在含钡亚硝酸盐/硝酸盐的渗碳盐废物和含氰化物/含氰酸盐的废物中通过在高温下点燃该混合物而产生的反应物质的方法，该方法包括 将反应物料悬浮在水中，然后将A.将用浓硝酸获得的碱性悬浮液中和至PH值为6，酸的进料速度和搅拌条件如此选择，以使悬浮液的pH值在任何时间 低于pH6，并分离碳酸钡或B.B。从碳酸钡中获得的碱性悬浮液，并将浓缩的硝酸将过滤器中和至PH值为7.2，酸的进料速度和搅拌条件为 选择悬浮液的pH值在任何时候都不会低于pH 7.2，并分离沉淀的碳酸氢钠，浓缩清除溶液 根据（A）或（B），以重量计10 - 20％的水分含量，分离氯化钠，并将剩余溶液蒸发干燥。

    Crystallization of nacl from mgcl2 solution
    83.
    发明授权
    Crystallization of nacl from mgcl2 solution 失效
    来自MGCL2解决方案的NACL的结晶

    公开(公告)号：US3743483A

    公开(公告)日：1973-07-03

    申请号：US3743483D

    申请日：1971-05-28

    申请人： CHEMICAL CONSTRUCTION CORP

    发明人： SHAH I

    IPC分类号： C01D3/06 ,  C01F5/30 ,  C01D1/30

    CPC分类号： C01D3/06 ,  C01F5/30

    摘要： AN AQUEOUS BRINE CONTAINING DISSOLVED SODIUM CHLORIDE AND MAGNESIUM CHLORIDE IS CONCENTRATED TO PRODUCE SELECTIVE CRYSTALLIZATION OF SODIUM CHLORIDE IN A MAGNESIUM CHLORIDE-RICH CONCENTRATED BRINE, BY PASSING THE AQUEOUS BRINE THROUGH A VENTURI CONTACTOR FOR EVAPORATION OF WATER BY DIRECT CONTACT WITH A HIGH VELOCITY HOT GAS STREAM.

    Ascending multi-stage distillation apparatus and method utilizing a feed-liquid-lift system
    84.
    发明授权
    Ascending multi-stage distillation apparatus and method utilizing a feed-liquid-lift system 失效
    升级多级蒸馏装置和使用进料液体系统的方法

    公开(公告)号：US3647638A

    公开(公告)日：1972-03-07

    申请号：US3647638D

    申请日：1968-07-05

    申请人： HYDRO CHEM & MINERAL CORP

    发明人： OSDOR ASRIEL

    IPC分类号： B01D3/06 ,  C01D3/06 ,  C02F1/10 ,  B01D1/14

    CPC分类号： B01D3/06 ,  B01D3/065 ,  C01D3/06 ,  C02F1/10 ,  Y02A20/128 ,  Y10S159/33

    摘要： A MULTI-STAGE DISTILLATION SYSTEM, PARTICULARLY USEFUL FOR DESALINATION OF SEA WATER, IS DESCRIBED COMPRISING A PLURALITY OF EVAPORATORS AND CONDENSERS DISPOSED AT ELEVATIONS INCREASING FROMTHE FIRST STAGE OF HIGHEST TEMPERATURE AND PRESSURE TO THE LAST STAGE OF LOWEST TEMPERATURE AND PRESSURE, THE FEED LIQUID BEING MOVED UPWARDLY AGAINST GRAVITY THROUGH THE EVAPORATORS BY THE ENERGY OF VAPORIZATION AND DIFFERENCE IN PRESSURE BETWEEN STAGES, AND THE COOLING LIQUID MOVING DOWNWARDLY BY GRAVITY THROUGH THE CONDENSERS AGAINST INCREASING PRESSURE. A FEED-LIQUID-LIFT SYSTEM IS DESCRIBED INCLUDING A DOWNFLOWING LIQUID COLUMN OF THE FEED LIQUID CONTINUOUSLY DRIVING A LONGER UP-FLOWING BOILING-MIXTURE COLUMN OF THE FEED LIQUID MIXED WITH VAPOR, WHILE LIQUID AT THE LOWER AND OF THE UP-FLOWING BOILING-MIXTURE COLUMN CONTINUOUSLY EFFECT A HYDRAULIC SEAL BETWEEN ADJACENT STAGES.

    Process for the selective recovery of potassium and magnesium values from aqueous salt solutions containing the same
    85.
    发明授权
    Process for the selective recovery of potassium and magnesium values from aqueous salt solutions containing the same 失效
    从含有它的水溶液中选择性恢复钾和镁值的方法

    公开(公告)号：US3615174A

    公开(公告)日：1971-10-26

    申请号：US3615174D

    申请日：1968-06-28

    申请人： NL INDUSTRIES INC

    发明人： LEWIS WILLIAM J

    IPC分类号： C01D3/06 ,  C01F5/26 ,  C05D1/02 ,  B03B1/00 ,  B03D1/02

    CPC分类号： C05D1/02 ,  C01D3/06 ,  C01F5/26

    摘要： Kainite immersed in brine in equilibrium converted to carnallite by cooling to about 10C. or under. Carnallite so obtained purified by cold flotation. Purified carnallite water leached to yield magnesium chloride brine and potassium chloride salt. Latter optionally converted to potassium sulfate by reaction with kainite, or by reacting the carnallite with kainite. Naturally occurring brine concentrated to precipitate principally sodium chloride, mother liquor warm concentrated to precipitate kainite, cooled under mother liquor for conversion to carnallite. A crude kainite fraction purified by warm flotation and a crude carnallite fraction purified by cold flotation reacted together to yield magnesium chloride brine and potassium sulfate salt.