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1. 发明授权

US3944500A Production of low bulk density product from sodium bicarbonate 失效
标题翻译：从碳酸氢钠生产低体积密度产品
公开(公告)号：US3944500A
公开(公告)日：1976-03-16
申请号：US540615
申请日：1975-01-13
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/35 , C01D7/00 , C11D3/10 , C09K3/00
CPC分类号： C11D3/10 , C01D7/00
摘要： Low bulk density products containing at least 10% Wegscheider's Salt (Na.sub.2 CO.sub.3.3NaHCO.sub.3), by weight, in needlelike form are produced from sodium bicarbonate by heating in two distinct steps an aqueous feed mixture comprising by weight at least about 50% sodium bicarbonate and about 3 to 25% Wegscheider's Salt.
摘要翻译：含有至少10％的Wegscheider's盐（Na 2 CO 3·3H 2 CO 3）的低体积密度产物，以重量计，由碳酸氢钠通过在两个不同的步骤中加热制备含有至少约50％碳酸氢钠和约 3至25％Wegscheider's Salt。

2. 发明授权

US4021526A Soluble silicate reduction in calcined trona liquors 失效
标题翻译：煅烧天然碱液中的可溶性硅酸盐还原
公开(公告)号：US4021526A
公开(公告)日：1977-05-03
申请号：US587585
申请日：1975-06-17
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/37 , C01D7/00
CPC分类号： C01D7/37
摘要： In the process of making sodium carbonate from trona by the method involving crushing the trona, calcining it and dissolving it in an aqueous medium for purification by crystallization, soluble silicate contamination of the crystallization liquor is reduced by an improvement which involves: (a) segregating the calcined trona into a coarse and a fine fraction; (b) separately dissolving the coarse and fine fractions to obtain aqueous solutions of sodium carbonate, sodium silicates and insoluble impurities; (c) optionally adding to the solution of the fine fraction insoluble impurities which have been separated from a solution of such fine fraction in a previous operation; followed by (d) digesting the solution of the fine fraction containing added insolubles at elevated temperature to insolubilize soluble silicates and separating the digested solution from insoluble impurities.
摘要翻译：在通过包括粉碎天然碱的方法制备碳酸钠的过程中，将其煅烧并将其溶解在水性介质中以通过结晶进行纯化，结晶液的可溶性硅酸盐污染通过改进降低，其包括：（a）分离将煅烧的天然碱变成粗和细级分; （b）分别溶解粗细级分，得到碳酸钠，硅酸钠和不溶性杂质的水溶液; （c）任选地在以前的操作中向已经从这种细级分溶液中分离出的细小级不溶性杂质溶液中加入; 然后（d）在升高的温度下将含有不溶物的细小级分的溶液消化，使可溶性硅酸盐不溶解并将消化的溶液与不溶性杂质分离。

3. 发明授权

US4044097A Recovery of soda values from sodium carbonate crystallizer purge liquors 失效
标题翻译：从碳酸钠结晶器清洗液中回收苏打水
公开(公告)号：US4044097A
公开(公告)日：1977-08-23
申请号：US723681
申请日：1976-09-16
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/00 , C01D7/24
CPC分类号： C01D7/00
摘要： Soda values from the crystallizer mother liquor purge in the process of making sodium carbonate from trona are recovered by (1) mixing the purge with treating agent of magnesium oxide, aluminum oxide, bauxite, certain fine particle size calcined trona, insoluble impurities obtained in the trona-soda ash process, or mixtures thereof, (2) evaporating the resulting mixture to dryness and calcining it to insolubilize soluble silicates and to reduce contamination with carbonaceous impurities, and (3) leaching the calcined mixture with water or aqueous sodium carbonate solution.
摘要翻译：（1）将吹扫与氧化镁，氧化铝，铝土矿，某些细粒度的煅烧天然碱的处理剂混合，得到的不溶性杂质，可以回收来自三氯生碳酸钠的过程中结晶器母液吹扫的苏打值（2）将所得混合物蒸发至干，并煅烧以使可溶性硅酸盐不溶解，并减少含碳杂质的污染，和（3）用水或碳酸钠水溶液浸提煅烧的混合物。

4. 发明授权

US4022867A Soluble silicate reduction in sodium carbonate crystallizer mother liquors 失效
标题翻译：可溶性硅酸钠还原在碳酸钠结晶器母液中
公开(公告)号：US4022867A
公开(公告)日：1977-05-10
申请号：US587575
申请日：1975-06-17
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/37 , C01D7/00
CPC分类号： C01D7/37
摘要： In the process for making sodium carbonate from trona, the soluble silicate content of crystallizer mother liquor from which sodium carbonate precursor crystals are obtained by evaporative crystallization is reduced by the method which comprises:1. digesting said mother liquor at elevated temperature for time sufficient to reduce soluble silicates, in the presence as treating agent of insolubles which have been obtained by (a) calcination of crushed trona, (b) segregation of a fine particle size fraction from the calcined trona, (c) dissolution of said fine particle size fraction in an aqueous medium to obtain a solution comprising sodium carbonate and insolubles, followed by (d) separating insolubles, and2. separating the insolubles from the digested mother liquor, and recycling the mother liquor to the process.
摘要翻译：在从天然碱制造碳酸钠的方法中，通过蒸发结晶获得碳酸钠前体晶体的结晶器母液的可溶性硅酸盐含量通过以下方法减少：

5. 发明授权

US3991160A Recovery of soda values from sodium carbonate crystallizer purge liquors 失效
标题翻译：从碳酸钠结晶器清洗液中回收苏打水
公开(公告)号：US3991160A
公开(公告)日：1976-11-09
申请号：US587581
申请日：1975-06-17
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/00 , C01D7/12
CPC分类号： C01D7/00 , C01D7/126
摘要： Soda values from the crystallizer mother liquor purge in the process of making sodium carbonate from trona are recovered by (1) mixing the purge with treating agent of magnesium oxide, aluminum oxide, bauxite, certain fine particle size calcined trona, insoluble impurities obtained in the trona-soda ash process, or mixtures thereof, (2) evaporating the resulting mixture to dryness and calcining it to insolubilize soluble silicates and to reduce contamination with carbonaceous impurities, and (3) leaching the calcined mixture with water or aqueous sodium carbonate solution.
摘要翻译：（1）将吹扫与氧化镁，氧化铝，铝土矿，某些细粒度的煅烧天然碱的处理剂混合，得到的不溶性杂质，可以回收来自三氯生碳酸钠的过程中结晶器母液吹扫的苏打值（2）将所得混合物蒸发至干，并煅烧以使可溶性硅酸盐不溶解，并减少含碳杂质的污染，和（3）用水或碳酸钠水溶液浸提煅烧的混合物。

6. 发明授权

US4151261A Method of preparing sodium liquors low in calcium 失效
标题翻译：制备低钙的钠液的方法
公开(公告)号：US4151261A
公开(公告)日：1979-04-24
申请号：US587579
申请日：1975-06-17
申请人： Rustom P. Poncha , Alan B. Gancy
发明人： Rustom P. Poncha , Alan B. Gancy
IPC分类号： C01D7/00
CPC分类号： C01D7/00
摘要： A method for dissolving calcined trona containing calcareous impurities, to obtain an aqueous sodium carbonate solution having low calcium content involves contacting calcined trona in countercurrent flow, desirably under specific temperature conditions, with dilute sodium carbonate solution. Sodium carbonate solutions thus obtained have reduced tendency to form calcium deposits in processing equipment.
摘要翻译：用于溶解含有钙质杂质的煅烧天然碱的方法，以获得具有低钙含量的碳酸钠水溶液，包括将煅烧的天然碱与特定温度条件下的逆流流动与稀碳酸钠溶液接触。由此获得的碳酸钠溶液具有减少在加工设备中形成钙沉积物的倾向。

7. 发明授权

US4115525A Absorptive low bulk density product from sodium sesquicarbonate 失效
标题翻译：来自倍半碳酸钠的吸收性低体积密度产物
公开(公告)号：US4115525A
公开(公告)日：1978-09-19
申请号：US356663
申请日：1973-05-02
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/14 , C01D7/35 , C01D7/37
CPC分类号： C01D7/14 , C01D7/35
摘要： Conversion of sodium sesquicarbonate particles to particles of lower bulk density, as low as 180 grams per liter, with high absorption property capable of absorbing as much as 40 percent of wetting agent and with good resistance to breakage and attrition and with mild alkalinity of less than 9.9 pH to a pH approaching 9.4 without loss of particulate identity, by passing the particles through a reaction zone at a temperature of 70.degree. to 105.degree. C. and introducing a gas mixture containing 15-85 percent CO.sub.2 and 15-80 percent water vapor and maintaining the gas mixture in contact with the particles until the particles contain at least 10 percent Wegscheider's Salt and continuing the reaction to produce particles containing 20 to in excess of 95 percent Wegscheider's Salt with a water content of less than 12 percent, said particles being characterized by being in needle-form which in turn are composed of randomly oriented Wegscheider's Salt micro needles.
摘要翻译：将倍半碳酸钠颗粒转化为低体积密度的颗粒，低至180克/升，具有高吸收性能，能够吸收多达40％的润湿剂，并且具有良好的耐断裂和磨损，并且具有小于等于通过使颗粒通过反应区，在70至105℃的温度下，将pH值调节至接近9.4的pH，而不损失颗粒状态，并引入含有15-85％CO 2和15-80％水蒸气的气体混合物并保持气体混合物与颗粒接触，直到颗粒含有至少10％的Wegscheider's Salt，并继续反应以产生含水量低于12％的20至超过95％Wegscheider's盐的颗粒，所述颗粒为其特征在于呈针状，其又由随机取向的Wegscheider的盐微针组成。

8. 发明授权

US4039618A Treatment of sodium carbonate crystallizer mother liquors 失效
标题翻译：处理碳酸钠结晶器母液
公开(公告)号：US4039618A
公开(公告)日：1977-08-02
申请号：US587584
申请日：1975-06-17
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/00
CPC分类号： C01D7/00
摘要： In the process for making sodium carbonate from trona, the soluble silicate content of crystallizer mother liquor from which sodium carbonate precursor crystals are obtained by evaporative crystallization is reduced by digesting the mother liquor at elevated temperature in the presence of certain activated insolubles, followed by separating the insolubles from the digested mother liquor. These activated insolubles are obtained by calcining crushed trona, dissolving the calcined trona in an aqueous medium to obtain a solution of sodium carbonate containing insolubles, separating the insolubles and activating them by calcination at elevated temperature.
摘要翻译：在从天然碱制造碳酸钠的方法中，通过蒸发结晶获得碳酸钠前体晶体的结晶器母液的可溶性硅酸盐含量通过在某些活化的不溶物存在下在高温下消化母液而降低，然后分离消化的母液中的不溶物。这些活化的不溶物通过煅烧压碎的天然碱，将煅烧的天然碱溶解在水性介质中以获得含有不溶物的碳酸钠溶液，分离不溶物并通过在升高的温度下煅烧来活化而得到。

9. 发明授权

US3984527A Production of low bulk density product from sodium bicarbonate by the use of an inert gas stream 失效
标题翻译：通过使用惰性气流从碳酸氢钠生产低体积密度产品
公开(公告)号：US3984527A
公开(公告)日：1976-10-05
申请号：US540614
申请日：1975-01-13
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
IPC分类号： C01D7/35 , C01D7/00 , C01D7/14
CPC分类号： C01D7/00
摘要： Low bulk density products containing at least 10% Wegscheider's Salt, by weight, in needlelike form are produced from sodium bicarbonate by heating in the presence of a slow inert gas stream an aqueous feed mixture comprising, by weight, at least about 50% sodium bicarbonate and about 15 to 30% Wegscheider's Salt.
摘要翻译：含有至少10％重量的针刺状的Wegscheider's盐的低堆积密度产物由碳酸氢钠通过在缓慢惰性气流的存在下加热含水进料混合物而制备，所述含水进料混合物包含至少约50重量％的碳酸氢钠和约15至30％的Wegscheider's Salt。

10. 再颁专利

USRE32609E Continuous process for the manufacture of calcium magnesium acetate deicer 失效
标题翻译：连续生产醋酸镁醋酸除冰机
公开(公告)号：USRE32609E
公开(公告)日：1988-02-23
申请号：US4384
申请日：1986-11-06
申请人： Alan B. Gancy
发明人： Alan B. Gancy
IPC分类号： C09K3/18
CPC分类号： C09K3/185
摘要： Finely divided lime, at any degree of slaking, is introduced in a steady stream into an agitated reactor designed to produce pellets or aggregates. Concentrated acetic acid is simultaneously introduced in a steady stream at a rate equal to the chemical combining rate required to produce calcium magesium acetate. Water content of the reaction stream is critical; the mol ratio of water, including water of neutralization, to the calcium magnesium acetate product must fall in the range 3.3-7.0 in order to form the desired pellets and to avoid sticking, caking, and dust emanation from the reactor. Product pellets are drawn off in a stream from the reactor and dried for use as a non-polluting roadway and walkway deicer. Traction agent is optionally incorporated into the deicer pellets by introducing a steady stream of traction agent to the reactor simultaneous with raw materials introduction. Magnesium-to-calcium ratios greater than one are achieved by blending dolime with magnesium-rich ore.

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