公开(公告)号：US6106796A

公开(公告)日：2000-08-22

申请号：US310995

申请日：1999-05-13

申请人： Robin Phinney ,  Mark Hantke

发明人： Robin Phinney ,  Mark Hantke

IPC分类号： C01C1/24 ,  C01D7/02 ,  C01D7/18 ,  C01D7/00

CPC分类号： C01C1/24 ,  C01D7/02 ,  C01D7/18

摘要： A process is provided for recovering sodium bicarbonate and ammonium sulfate from a solution containing sodium sulfate derived from a process for removing sulfur contaminants out of a gas with sodium bicarbonate reagent. Sodium bicarbonate is precipitated and removed from the solution. Sodium sulfate or ammonium bicarbonate is added to the solution to form a second precipitate of sodium bicarbonate, which is removed from the solution. The solution is conditioned by either heating the solution to 95.degree. C. to liberate ammonia and carbon dioxide or by adding sulfuric acid to the solution to decompose any carbonates. The solution is cooled to a temperature between -2 to 2.degree. C. to form a third precipitate of sodium bicarbonate. Sulfuric acid is added to the solution to decompose any carbonate minerals, and purified ammonium sulfate solution is recovered.

摘要翻译： 提供了一种从含有硫酸钠的溶液中回收碳酸氢钠和硫酸铵的方法，该硫酸钠衍生自用碳酸氢钠试剂从气体中除去硫污染物的方法。 从溶液中沉淀并除去碳酸氢钠。 向溶液中加入硫酸钠或碳酸氢铵，形成碳酸氢钠的第二沉淀，将其从溶液中除去。 通过将溶液加热至95℃以释放氨和二氧化碳或通过向溶液中加入硫酸来分解任何碳酸酯来调节溶液。 将溶液冷却至-2至2℃的温度以形成第三碳酸氢钠沉淀物。 将硫酸加入到溶液中以分解任何碳酸盐矿物，并回收纯化的硫酸铵溶液。

公开(公告)号：US5830422A

公开(公告)日：1998-11-03

申请号：US547773

申请日：1995-10-25

申请人： Steve Kresnyak ,  Jake Halldorson ,  Mark Hantke

发明人： Steve Kresnyak ,  Jake Halldorson ,  Mark Hantke

IPC分类号： B01D53/50 ,  C01C1/244 ,  C01D7/02 ,  C01D7/12 ,  C01D7/18 ,  C01F11/46 ,  C01D7/37

CPC分类号： C01C1/244 ,  B01D53/502 ,  C01D7/02 ,  C01D7/18

摘要： A process for producing sodium bicarbonate and sodium carbonate. The process includes reacting within a reactor sodium sulfate in aqueous solution with ammonia and carbon dioxide to precipitate sodium bicarbonate and form a first mother liquor. The sodium bicarbonate is separated and dried to produce sodium bicarbonate product. Alternatively, the sodium bicarbonate may be calcined to convert it to sodium carbonate. The first mother liquor may be evaporated to precipitate unreacted sodium sulfate, with the formation of a second mother liquor. The second mother liquor may be cooled to precipitate a double salt of sodium sulfate/ammonium sulfate and water. A third mother liquor is formed from this process. The latter-mentioned liquor from the precipitation of the double salt is evaporated to precipitate a substantial pure ammonium sulfate in a purity of greater than approximately 75 wt %. A fourth mother liquor is formed. The double salt is added to the first mother liquor from the precipitation of sodium bicarbonate prior to the evaporation step and the fourth mother liquor is added to the second mother liquor from the evaporation to precipitate unreacted sodium sulfate.

摘要翻译： 一种生产碳酸氢钠和碳酸钠的方法。 该方法包括在反应器内在水溶液中的硫酸钠与氨和二氧化碳反应以沉淀碳酸氢钠并形成第一母液。 将碳酸氢钠分离并干燥以产生碳酸氢钠产物。 或者，可以将碳酸氢钠煅烧以将其转化为碳酸钠。 可以蒸发第一母液以沉淀未反应的硫酸钠，形成第二母液。 可以将第二母液冷却以沉淀出硫酸钠/硫酸铵和水的双重盐。 第三母液是从这个过程中形成的。 将后者提及的来自双盐沉淀的液体蒸发以沉淀出纯度大于约75重量％的基本上纯的硫酸铵。 形成第四母液。 在蒸发步骤之前，从沉淀碳酸氢钠将双重盐加入到第一母液中，并将第四母液从蒸发中加入到第二母液中以沉淀未反应的硫酸钠。

公开(公告)号：US5730875A

公开(公告)日：1998-03-24

申请号：US749742

申请日：1996-11-15

申请人： Thomas L. Grisham ,  Janet K. Peters ,  Keith W. Sharp ,  Edward E. Ebel

发明人： Thomas L. Grisham ,  Janet K. Peters ,  Keith W. Sharp ,  Edward E. Ebel

IPC分类号： B01J4/04 ,  B01J10/00 ,  C01D7/18 ,  C02F1/38 ,  C01D7/00

CPC分类号： C01D7/18 ,  B01J10/00 ,  B01J4/04

摘要： A method of optimizing and controlling gas-liquid phase chemical reactions includes the steps of introducing a liquid reactant to the hollow interior of a cylindrical porous tube in a thin film following a spiral flow pattern around and along the wall of the tube; controlling the physical characteristics of the liquid film and the flow pattern followed by the film through the tube; mixing a gas reactant and an inert gas in preselected proportion; sparging the mixture of gas reactant and inert gas through the wall of the tube and into the liquid film to form a multiplicity of gas bubbles in interfacial contact with the gas; allowing the gas reactant and the liquid reactant to chemically react; segregating the remaining gas from the liquid within the tube; and separating the cleaned liquid stream from the contaminant laden gas stream.

摘要翻译： 优化和控制气 - 液相化学反应的方法包括以下步骤：在围绕并沿着管壁的螺旋流动模式下将液体反应物引入薄膜中的圆柱形多孔管的中空内部; 通过管子控制液膜的物理特性和随后的膜流动模式; 以预选比例混合气体反应物和惰性气体; 将气体反应物和惰性气体的混合物通过管壁喷射到液体膜中以形成与气体界面接触的多个气泡; 使气体反应物和液体反应物发生化学反应; 将剩余气体与管内的液体分离; 以及将清洁的液体流与载有污染物的气流分离。

公开(公告)号：US5275794A

公开(公告)日：1994-01-04

申请号：US796263

申请日：1991-11-20

申请人： Raymundo R. Luna

发明人： Raymundo R. Luna

IPC分类号： C01D7/18 ,  C01D7/02

CPC分类号： C01D7/18

摘要： Production of sodium bicarbonate from natural soda deposits that may occur as natural brines or solid soda salts is disclosed. The alkalinity in these natural soda deposits consists of carbonates and bicarbonates. The carbonates are converted to bicarbonates by reacting sodium carbonate with ammonium bicarbonate which acts as a carbon dioxide carrier until all the sodium carbonate is exhausted. The solubility of the sodium bicarbonate is lowered by the presence of non-alkaline sodium salts, e.g., sodium chloride. The regeneration of the cyclic reagent (NH.sub.3) is done using the sodium bicarbonate formed by the double decomposition of sodium chloride and ammonium bicarbonate giving a final soda free brine exempt of contaminants foreign to its original components.

摘要翻译： 公开了可能作为天然盐水或固体钠盐生产的天然苏打沉积物中的碳酸氢钠的生产。 这些天然苏打矿中的碱度由碳酸盐和碳酸氢盐组成。 碳酸钠通过碳酸钠与碳酸氢铵反应而转化成碳酸氢盐，碳酸氢铵充当二氧化碳载体，直至碳酸钠全部耗尽。 通过存在非碱性钠盐，例如氯化钠，降低碳酸氢钠的溶解度。 循环试剂（NH 3）的再生是使用通过氯化钠和碳酸氢铵的双重分解形成的碳酸氢钠进行的，得到最终的无碱盐水，免除其原始组分外来的污染物。

公开(公告)号：US4217330A

公开(公告)日：1980-08-12

申请号：US613439

申请日：1975-09-15

申请人： Keiichi Nakaya ,  Kimihiko Sato ,  Kenji Konishi

发明人： Keiichi Nakaya ,  Kimihiko Sato ,  Kenji Konishi

IPC分类号： B01J8/22 ,  C01D7/18 ,  B01J10/00

CPC分类号： C01D7/18

摘要： Sodium bicarbonate is produced in an apparatus comprising a reactor system for the production of sodium bicarbonate which comprises a housing having a plurality of reaction zones being placed in sequence from a last zone to a first zone, each being in liquid and gas flow communication with each adjacent zone; carbon dioxide inlet means being disposed at the bottom of the last zone so that carbon dioxide introduced into said last zone moves upwardly through said zone, and is discharged through a gas-liquid separator at the top of said zone and is then introduced into the bottom of the next adjacent zone, until said gas reaches the top of the first zone where it is discharged through a carbon dioxide gas outlet; inlet means for feeding an ammoniacal brine or a mother liquor to be carbonated into the top of the first zone, counter-currently to the upward movement of the carbon dioxide gas in said first zone, wherein said brine or mother liquor is passed downwardly through said first zone and flows sequentially into each of said adjacent zones in countercurrent contact with the upward moving CO.sub.2 in each of said zones; recirculation means being associated with each zone which directs the downward flow of liquid within said zone, said means having a liquid inlet situated at the top of said zone and a liquid outlet at the bottom of said zone; CO.sub.2 sparger means situated at the bottom of each zone through which CO.sub.2 is introduced into each zone at sufficient force such that a portion of the liquid within said zone is forced upwardly into proximity of the inlet to the recirculation means so that a portion of the liquid is continually introduced into said recirculation means; a gas-liquid separator disposed between each of said adjacent zones which prevents the upwardly forced liquid from re-entering the preceding zone by redirecting said upwardly forced liquid back to said zone, and which permits the unabsorbed CO.sub.2 to be removed from said zone; means for introducing said CO.sub.2 discharged from said gas-liquid separator into the next adjacent zone; and product outlet means disposed in proximity to the bottom of said last zone for recovery of the crystallized sodium bicarbonate-containing slurry.

公开(公告)号：US3887689A

公开(公告)日：1975-06-03

申请号：US34459973

申请日：1973-03-26

申请人： ICI LTD

发明人： CARDING JOHN RAYMOND ,  PEOVER CYRIL

IPC分类号： C01D7/18

CPC分类号： C01D7/18

摘要： Carbonation of ammoniacal sodium chloride brine in the ammonia soda process wherein a phenol-free or phenol deficient ammonia is used as make-up ammonia, the improvement being that one or more phenolic compounds are added to the process in an amount sufficient to reduce the carbon dioxide content of waste gas leaving the carbonation stage to less than 12 percent carbon dioxide.

摘要翻译： 氨化钠盐水在氨苏打法中的碳酸化，其中使用无酚或苯酚缺乏的氨作为补充氨，改进之处在于一种或多种酚类化合物以足以减少碳的量加入到该方法中 离开碳酸化阶段的废气的二氧化物含量低于12％的二氧化碳。

公开(公告)号：US3329479A

公开(公告)日：1967-07-04

申请号：US36147364

申请日：1964-04-21

申请人： EDMOND HUSTINX

发明人： EDMOND HUSTINX

IPC分类号： C01D7/18

CPC分类号： C01D7/18

公开(公告)号：US3014782A

公开(公告)日：1961-12-26

申请号：US76228058

申请日：1958-09-22

申请人： ASAHI CHEMICAL IND

发明人： HIDEO ARITA ,  HIROYUKI KUSAKA

IPC分类号： C01C1/16 ,  C01D7/18

CPC分类号： C01C1/164 ,  C01D7/18

公开(公告)号：US2946653A

公开(公告)日：1960-07-26

申请号：US60803356

申请日：1956-09-05

申请人： DIAMOND ALKALI CO

发明人： MYERS CLYDE B

IPC分类号： C01D7/18

CPC分类号： C01D7/18

公开(公告)号：US2893833A

公开(公告)日：1959-07-07

申请号：US52450455

申请日：1955-07-26

申请人： DIAMOND ALKALI CO

发明人： DEUTSCH ZOLA G

IPC分类号： C01D7/12 ,  C01D7/18

CPC分类号： C01D7/123 ,  C01D7/18