公开(公告)号：UST970008I4

公开(公告)日：1978-05-02

申请号：US794269

申请日：1977-05-05

申请人： John J. Kohler ,  Joe Gautney ,  Yong K. Kim ,  John F. McCullough

发明人： John J. Kohler ,  Joe Gautney ,  Yong K. Kim ,  John F. McCullough

IPC分类号： B01D53/50

CPC分类号： B01D53/507

摘要： a process for the removal and recovery of sulfur oxides from gas streams by contacting the gas stream with an aqueous suspension of melamine containing an oxidation inhibitor such as para-phenylenediamine whereupon a mixture of solid, hydrated melamine sulfites and solid, hydrated melamine sulfate is formed. The solids are then separated from the reaction product and the clarified liquid recycled. The solids are then heated to temperatures up to 200.degree. C to decompose the hydrated melamine sulfites into free melamine, gaseous water, and sulfur dioxide, and the gaseous water and sulfur dioxide withdrawn as product. The hot solids are cooled and split into two portions. One portion is recycled and the other portion is treated with an aqueous inorganic base stronger than melamine such as ammonia or potassium hydroxide to decompose the contained melamine sulfate into free melamine and a basic sulfate salt solution. The basic sulfate salt solution is separated from the melamine and withdrawn as product and the melamine is recycled to the process.

公开(公告)号：US2256593A

公开(公告)日：1941-09-23

申请号：US35928640

申请日：1940-10-01

申请人： JOHN J KOHLER

发明人： FOREST HILL WALTER

IPC分类号： A01B33/02

CPC分类号： A01B33/021

公开(公告)号：US4139597A

公开(公告)日：1979-02-13

申请号：US850784

申请日：1977-11-11

申请人： John J. Kohler ,  Joe Gautney ,  Yong K. Kim ,  John F. McCullough

发明人： John J. Kohler ,  Joe Gautney ,  Yong K. Kim ,  John F. McCullough

IPC分类号： B01D53/50 ,  C01B17/00

CPC分类号： B01D53/507

摘要： A process for the removal and recovery of sulfur oxides from gas streams by contacting the gas stream with an aqueous suspension of melamine whereupon a mixture of solid, hydrated melamine sulfites, hydrated melamine sulfate is formed. The solids are separated from the reaction product and the clarified liquid recycled. The solids are then heated to temperatures up to 200.degree. C. to decompose the hydrated melamine sulfites into free melamine, gaseous water, and sulfur dioxide, and the gaseous water and sulfur dioxide withdrawn as product. The hot solids are cooled and split into two portions. One portion is recycled and the other portion is treated with a base stronger than melamine to decompose the contained melamine sulfate into free melamine and a basic sulfate salt solution. The basic sulfate salt solution is separated from the melamine and withdrawn as product and the melamine is recycled to the process.

摘要翻译： 通过使气流与三聚氰胺的水悬浮液接触来形成从气流中除去和回收硫氧化物的方法，由此形成固体，水合三聚氰胺三聚氰胺硫酸盐的混合物。 将固体与反应产物分离，再循环澄清液体。 然后将固体加热至高达200℃的温度，以将水合的三聚氰胺亚硫酸盐分解成游离三聚氰胺，气态水和二氧化硫，并将气态水和二氧化硫作为产物取出。 将热固体冷却并分成两部分。 一部分被再循环，另一部分用比三聚氰胺更强的碱处理以将含有的三聚氰胺硫酸盐分解成游离三聚氰胺和碱式硫酸盐溶液。 将碱性硫酸盐溶液与三聚氰胺分离并作为产物取出，并将三聚氰胺再循环至该方法。

公开(公告)号：UST969003I4

公开(公告)日：1978-04-04

申请号：US807842

申请日：1977-06-20

申请人： John F. Phillips, Jr. ,  John J. Kohler

发明人： John F. Phillips, Jr. ,  John J. Kohler

IPC分类号： C05G3/00

CPC分类号： C05G3/0041 ,  C05G3/00 ,  C05B7/00 ,  C05C1/00 ,  C05C9/00 ,  C05D1/02 ,  C05G3/0064 ,  C05G3/0082

摘要： liquid fertilizers having controlled release properties are prepared from fertilizer solutions and oil-surfactant mixtures. An invert surfactant is dissolved in an oil such as kerosene. The amount of surfactant used can vary over a wide range. Use of between 0.6 and 1.0 percent surfactant in the fertilizer formulation yields fertilizers with acceptable release rates. Liquid fertilizer is slowly added to the oil-surfactant mixture with vigorous agitation causing a water-in-oil emulsion to form. Mixtures containing 80 to 90 percent liquid fertilizer and 10 to 20 percent oil made excellent products.The final fertilizer product is an invert emulsion containing 80 to 90 percent liquid fertilizer, 10 to 20 percent oil, and 0.6 to 1.0 percent surfactant. The product consists of small droplets of liquid fertilizer solution surrounded by a thin but essential impenetrable oil-surfactant layer. Water slowly dissolves the surfactant from the oil, thus breaking the emulsion and allowing the liquid fertilizer to be released. Ammonium phosphate, ammonium polyphosphate, ammonium nitrate, potassium chloride, uran solutions, and mixtures thereof, may be used as liquid fertilizers.