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公开(公告)号：US4417996A
公开(公告)日：1983-11-29
申请号：US418879
申请日：1982-09-16
CPC分类号： C02F1/5245 , C01G49/009
摘要： Aqueous basic polyaluminum-iron halide solutions, useful as coagulants in waste water treatment are disclosed. The polyaluminum-iron halide solution is prepared by reacting an aqueous polyaluminum halide solution with one or more members of the group consisting of ferrous halide and ferric halide resulting in a solution containing a concentration of metal ions ranging from about 1.35 to 4.5 mol/liter as a dissolved salt of the formulaAl.sub.1-x Fe.sub.x.sup.III Fe.sub.y.sup.II (OH).sub.3+2y-z Hal.sub.zwherein Hal is chlorine, bromine, iodine or mixtures thereof; (x+y)(1-x) is about 0.2 to 1.5; (3+2y-z)(3+2y) is about 0.24 to 0.67; and z is less than 3+2y wherein x/y is about 0 to 1. Alternatively, the coagulant solution is prepared by reacting an aqueous aluminum halide solution or low basic polyaluminum halide solution with iron. Preferably the halide employed is chloride.
摘要翻译： 公开了用作废水处理中的絮凝剂的水性碱性聚铝 - 卤化铁溶液。 聚铝 - 卤化铝溶液是通过使聚卤化铝水溶液与卤化亚铁和卤化铁的一种或多种成分反应制得的，得到含有浓度为约1.35-4.5mol /升的金属离子浓度的溶液， 式Al1-xFexIIIFeyII（OH）3 + 2y-zHalz的溶解盐，其中Hal为氯，溴，碘或其混合物; （x + y）（1-x）为约0.2〜1.5; （3 + 2y-z）（3 + 2y）为约0.24〜0.67; 并且z小于3 + 2y，其中x / y为约0至1.或者，通过使卤化铝水溶液或低碱性聚铝卤化物溶液与铁反应制备凝结剂溶液。 所用的卤化物最好是氯化物。
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公开(公告)号：US4362643A
公开(公告)日：1982-12-07
申请号：US218984
申请日：1980-12-22
CPC分类号： C01G49/009 , C02F1/5245 , C01P2006/10 , C01P2006/60
摘要： Aqueous basic polyaluminum-iron halide solutions, useful as coagulants in waste water treatment are disclosed. The polyaluminum-iron halide solution is prepared by reacting an aqueous polyaluminum halide solution with one or more members of the group consisting of ferrous halide and ferric halide resulting in a solution containing a concentration of metal ions ranging from about 1.35 to 4.5 mol/liter as a dissolved salt of the formulaAl.sub.1-x Fe.sub.x.sup.III Fe.sub.y.sup.II (OH).sub.3+2y-z Hal.sub.zwherein Hal is chlorine, bromine, iodine or mixtures thereof; (x+y)/(1-x) is about 0.2 to 1.5; 3+2y-z/3+2y is about 0.24 to 0.67; and z is less than 3+2y. Alternatively, the coagulant solution is prepared by reacting an aqueous aluminum halide solution or low basic polyaluminum halide solution with iron. Preferably the halide employed is chloride.
摘要翻译： 公开了用作废水处理中的絮凝剂的水性碱性聚铝 - 卤化铁溶液。 聚铝 - 卤化铝溶液是通过使聚卤化铝水溶液与卤化亚铁和卤化铁的一种或多种成分反应制得的，得到含有浓度为约1.35-4.5mol / l的金属离子的溶液， 式Al1-xFexIIIFeyII（OH）3 + 2y-zHalz的溶解盐，其中Hal为氯，溴，碘或其混合物; （x + y）/（1-x）为约0.2〜1.5; 3 + 2y-z / 3 + 2y为约0.24〜0.67; z小于3 + 2y。 或者，通过使卤化铝水溶液或低碱性聚铝卤化物溶液与铁反应制备凝结剂溶液。 所用的卤化物最好是氯化物。
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3.发明授权Recovery of soda values and heat from sodium carbonate crystallizer purge liquors 失效从碳酸钠结晶器清洗液回收苏打值和热量
公开(公告)号：US4039617A
公开(公告)日：1977-08-02
申请号：US587583
申请日：1975-06-17
申请人： Vincent H. S. Kuo
发明人： Vincent H. S. Kuo
CPC分类号： C01D7/00
摘要： Soda values from the crystallizer purge liquor from the process of making sodium carbonate from trona are recovered by cooling the purge liquor to temperature below about 32.degree. C. to effect crystallization of sodium carbonate decahydrate crystals therefrom, and recovering the decahydrate crystals. Optionally, the decahydrate crystals may be heated to convert them to sodium carbonate monohydrate crystals. Sensible heat of the crystallizer purge liquor and/or sensible heat and latent heat of vaporization of the sodium carbonate process crystallizer vapors may be recovered by using it to heat the sodium carbonate decahydrate crystals to convert them to sodium carbonate monohydrate crystals.
摘要翻译： 通过将清洗液冷却至低于约32℃至低于约32℃的温度来回收来自通过来自天然碱制备碳酸钠的过程的结晶器清洗液的苏打值，以使其中的十水合碳酸钠晶体结晶，并回收十水合物晶体。 任选地，可以加热十水合物晶体以将其转化为碳酸钠一水合物晶体。 结晶器清洗液的显热和/或碳酸钠工艺结晶器蒸气的显热和蒸发潜热可以通过使用它来加热碳酸钠十水合物晶体以将其转化为碳酸钠一水合物晶体来回收。
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