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1. 发明授权

US4668495A Process for obtaining potassium nitrate from potassium chloride and nitric acid 失效
标题翻译：从氯化钾和硝酸中获得硝酸钾的方法
公开(公告)号：US4668495A
公开(公告)日：1987-05-26
申请号：US771294
申请日：1985-08-30
申请人： Luis S. Portela
发明人： Luis S. Portela
IPC分类号： C01D9/04 , C01D9/16 , C01B21/48 , C01F11/38
CPC分类号： C01D9/16 , C01D9/04
摘要： The present invention provides a process for manufacture of potassium nitrate from potassium chloride and nitric acid. A source of potassium chloride may be screened and separated into fine and coarse fractions, or the screening may be eliminated and the source may be separated into equal coarse fractions. The coarse fraction, when screening has occurred, or one of the equal fractions, where no screening has occurred, is dissolved in a dilute solution of nitric acid prior to any reaction. Thereafter, either the fine fraction (if screening occurred) or the other equal fraction (if no screening occurred) reacts with the dilute nitric acid-potassium chloride solution and additional nitric acid having a concentration of about 60% at ambient temperature. The resulting solution may be crystallized with or without the prior separation of solid potassium nitrate. Nitric acid is recovered by solvents from a residual brine solution after crystallization. The recovered nitric acid is washed to provide a nitric acid solution having a concentration of 3% to 10% which is recycled for use at the beginning of the process to dissolve the coarse fraction of potassium chloride prior to the reaction stage.
摘要翻译：本发明提供从氯化钾和硝酸制造硝酸钾的方法。氯化钾的来源可以筛选并分离成精细和粗级分，或者筛选可以被去除，并且源可以分离成相等的粗级分。当发生筛选时，粗级分或其中没有发生筛选的相等级分之一在任何反应之前溶解在稀硝酸溶液中。此后，细小部分（如果发生筛选）或其他相等的分数（如果没有筛选发生）在环境温度下与稀硝酸 - 氯化钾溶液和浓度约为60％的另外的硝酸反应。所得到的溶液可以在或不先前分离固体硝酸钾的情况下结晶。结晶后，硝酸由残留的盐水溶液通过溶剂回收。回收的硝酸被洗涤以提供浓度为3％至10％的硝酸溶液，其在该方法开始时被循环使用，以在反应阶段之前溶解氯化钾的粗级分。

2. 发明授权

US11332379B2 Industrial waste salt resourceful treatment method and device 有权
公开(公告)号：US11332379B2
公开(公告)日：2022-05-17
申请号：US17384827
申请日：2021-07-26
申请人： GO HIGHER ENVIRONMENT GROUP CO., LTD.
发明人： Futai Chen , Yongqian Chu , Yan Yang , Liqiang Bai
IPC分类号： B01D1/26 , B01D9/00 , B01D61/14 , C01D5/16 , C01D9/16 , C02F9/00 , C02F11/14 , C02F1/04 , C02F1/20 , C02F1/28 , C02F1/44 , C02F1/52 , C02F1/56 , C02F1/66 , C01D3/16 , C02F11/148 , C02F101/30
摘要： An industrial waste salt resourceful treatment method comprises the following steps: the industrial waste salt is sequentially subject to dissolving, chemical pre-purification, deep purification, organic matter concentration reduction, adsorption and oxidation decolorization and multi-effect evaporative crystallization to respectively obtain sodium sulfate, sodium chloride and sodium nitrate crystals; the crystallization temperature of sodium sulfate is in a range of 75° C. to 85° C.; the crystallization temperature of sodium chloride is in a range of 60 to 70° C.; and the crystallization temperature of sodium nitrate is in a range of 45° C. to 55° C. An industrial waste salt resourceful treatment device is further provided.

3. 发明申请

US20130323156A1 METHOD AND APPARATUS FOR SEQUENCING-BATCH PURIFICATION OF POTASSIUM NITRATE FROM SOLID WASTE PRODUCED BY GLASS-STRENGTHENING PROCESS 有权
标题翻译：用于通过玻璃加固工艺生产的固体废物对硝酸钾进行排序的方法和装置
公开(公告)号：US20130323156A1
公开(公告)日：2013-12-05
申请号：US13743837
申请日：2013-01-17
申请人： NATIONAL FORMOSA UNIVERSITY
发明人： Min-Hui YANG
IPC分类号： C01D9/16
CPC分类号： C01D9/16
摘要： Provided is a method and an apparatus for purifying potassium nitrate from the solid waste produced by a chemical glass-strengthening process. In the method, the solid waste is melted into a liquid waste at first. Potassium nitrate of various purity grades can be obtained by batch processing the liquid waste through stepwise cooling processes of cooling the liquid waste to a first temperature facilitating the potassium nitrate contained in the liquid waste to be crystallized at a first rate and then cooling the liquid waste to a second temperature close to the freezing point of the potassium nitrate at a second rate that is slower than the first rate. The recovered potassium nitrate from the solid waste can be recycled and reused.
摘要翻译：本发明提供一种通过化学玻璃强化工艺制备的固体废物中的硝酸钾的净化方法和装置。在该方法中，首先将固体废物熔化成废液。可以通过将液体废物冷却到第一温度的逐步冷却方法将液体废物分批处理成第一温度，从而使废液中所含的硝酸钾以第一速率结晶，然后冷却液体废物，从而获得各种纯度等级的硝酸钾以比第一速率慢的第二速率接近硝酸钾的冰点的第二温度。来自固体废物的回收的硝酸钾可以回收再利用。

4. 发明授权

US2852351A Continuous zone-refining 失效
公开(公告)号：US2852351A
公开(公告)日：1958-09-16
申请号：US66775457
申请日：1957-06-25
申请人： BELL TELEPHONE LABOR INC
发明人： PFANN WILLIAM G
IPC分类号： C01D9/16 , C30B13/00 , H01L21/00
CPC分类号： C30B13/005 , C01D9/16 , H01L21/00

5. 发明授权

US08956424B2 Method and apparatus for sequencing-batch purification of potassium nitrate from solid waste produced by glass-strengthening process 有权
标题翻译：用于通过玻璃强化过程产生的固体废物对硝酸钾进行批量纯化的方法和装置
公开(公告)号：US08956424B2
公开(公告)日：2015-02-17
申请号：US13743837
申请日：2013-01-17
申请人： National Formosa University
发明人： Min-Hui Yang
IPC分类号： C01D9/16
CPC分类号： C01D9/16
摘要： Provided is a method and an apparatus for purifying potassium nitrate from the solid waste produced by a chemical glass-strengthening process. In the method, the solid waste is melted into a liquid waste at first. Potassium nitrate of various purity grades can be obtained by batch processing the liquid waste through stepwise cooling processes of cooling the liquid waste to a first temperature facilitating the potassium nitrate contained in the liquid waste to be crystallized at a first rate and then cooling the liquid waste to a second temperature close to the freezing point of the potassium nitrate at a second rate that is slower than the first rate. The recovered potassium nitrate from the solid waste can be recycled and reused.
摘要翻译：本发明提供一种通过化学玻璃强化工艺制备的固体废物中的硝酸钾的净化方法和装置。在该方法中，首先将固体废物熔化成废液。可以通过将液体废物冷却到第一温度的逐步冷却方法将液体废物分批处理成第一温度，从而使废液中所含的硝酸钾以第一速率结晶，然后冷却液体废物，从而获得各种纯度等级的硝酸钾以比第一速率慢的第二速率接近硝酸钾的冰点的第二温度。来自固体废物的回收的硝酸钾可以回收再利用。

6. 发明授权

US4574075A Purification of alkali metal nitrates 失效
标题翻译：碱金属硝酸盐的纯化
公开(公告)号：US4574075A
公开(公告)日：1986-03-04
申请号：US678858
申请日：1984-12-06
申请人： Jack D. Rickly , B. Timothy Pennington
发明人： Jack D. Rickly , B. Timothy Pennington
IPC分类号： C01D9/16 , C01F11/36
CPC分类号： C01D9/16 , Y02P20/134
摘要： A process is disclosed for removing heavy metal contaminants from impure alkali metal nitrates containing them. The process comprises mixing the impure nitrates with sufficient water to form a concentrated aqueous solution of the impure nitrates, adjusting the pH of the resulting solution to preferably within the range of between about 2 and about 4, adjusting the nitrite ion concentration to between about 0.07 molar and about 1.0 molar, to effect reduction of the heavy metal contaminants, adjusting the pH of the reduced solution to effect precipitation of heavy metal impurities, and separating the solid impurities from the resulting purified aqueous solution of alkali metal nitrates. The resulting purified solution of alkali metal nitrates may be heated to evaporate water therefrom to produce purified molten alkali metal nitrate suitable for use as a heat transfer medium. If desired, the purified molten form may be granulated and cooled to form discrete solid particles of alkali metal nitrates.
摘要翻译：公开了从含有它们的不纯碱金属硝酸盐中除去重金属污染物的方法。该方法包括将不纯的硝酸盐与足够的水混合以形成不纯的硝酸盐的浓缩水溶液，将所得溶液的pH调节至约2至约4的范围内，将亚硝酸根离子浓度调节至约0.07 摩尔和约1.0摩尔，以实现重金属污染物的减少，调节还原溶液的pH以实现重金属杂质的沉淀，并从所得纯化的碱金属硝酸盐水溶液中分离固体杂质。得到的碱金属硝酸盐的精制溶液可以被加热以从其中蒸发水，以产生适合用作传热介质的纯化的熔融碱金属硝酸盐。如果需要，可以将纯化的熔融形式造粒并冷却以形成离散的碱金属硝酸盐的固体颗粒。

7. 发明授权

US4568352A Alkali metal nitrate purification 失效
标题翻译：碱金属硝酸盐净化
公开(公告)号：US4568352A
公开(公告)日：1986-02-04
申请号：US613667
申请日：1984-05-24
申请人： Louis C. Fiorucci , Michael J. Morgan
发明人： Louis C. Fiorucci , Michael J. Morgan
IPC分类号： C01D9/16 , C01F11/36
CPC分类号： C01D9/16 , Y02P20/134
摘要： A process is disclosed for removing contaminants from impure alkali metal nitrates containing them. The process comprises heating the impure alkali metal nitrates in solution form or molten form at a temperature and for a time sufficient to effect precipitation of solid impurities and separating the solid impurities from the resulting purified alkali metal nitrates. The resulting purified alkali metal nitrates in solution form may be heated to evaporate water therefrom to produce purified molten alkali metal nitrates suitable for use as a heat transfer medium. If desired, the purified molten form may be granulated and cooled to form discrete solid particles of purified alkali metal nitrates.
摘要翻译：公开了从含有它们的不纯碱金属硝酸盐中除去污染物的方法。该方法包括在足以使固体杂质沉淀并从所得到的纯碱金属硝酸盐中分离出固体杂质的温度和时间下，以溶液形式或熔融形式加热不纯的碱金属硝酸盐。可以将所得的溶液形式的纯碱金属硝酸盐加热，从而蒸发水，从而制备适合用作传热介质的纯化的熔融碱金属硝酸盐。如果需要，可以将纯化的熔融形式造粒并冷却以形成分离的纯碱金属硝酸盐的固体颗粒。

8. 发明授权

US4421662A Nonaqueous purification of mixed nitrate heat transfer media 失效
标题翻译：混合硝酸盐传热介质的非水净化
公开(公告)号：US4421662A
公开(公告)日：1983-12-20
申请号：US414725
申请日：1982-09-13
申请人： Louis C. Fiorucci , Michael J. Morgan
发明人： Louis C. Fiorucci , Michael J. Morgan
IPC分类号： C01D9/16 , C01F11/02 , C01F11/18 , C09K5/06 , C01F11/36
CPC分类号： C01D9/16 , C01F11/02 , C01F11/18 , C09K5/063
摘要： A nonaqueous, in-line method for removing carbonate and hydroxide contamination from a molten mixed sodium nitrate/potassium nitrate heat transfer salt. The method comprises dissolving a stoichiometric quantity of anhydrous Ca(NO.sub.3).sub.2 in the melt whereby an insoluble CaCO.sub.3 and Ca(OH).sub.2 precipitate is formed. The precipitate can be removed by settling, filtration or floatation techniques.
摘要翻译：一种用于从熔融混合硝酸钠/硝酸钾/热转移盐中除去碳酸盐和氢氧化物污染物的非水性直列法。该方法包括将化学计量的无水Ca（NO 3）2溶解在熔体中，由此形成不溶的CaCO 3和Ca（OH）2沉淀。可以通过沉降，过滤或漂浮技术除去沉淀物。

9. 发明申请

US20210347649A1 INDUSTRIAL WASTE SALT RESOURCEFUL TREATMENT METHOD AND DEVICE 有权
公开(公告)号：US20210347649A1
公开(公告)日：2021-11-11
申请号：US17384827
申请日：2021-07-26
申请人： GO HIGHER ENVIRONMENT GROUP CO., LTD.
发明人： Futai Chen , Yongqian Chu , Yan Yang , Liqiang Bai
IPC分类号： C01D3/16 , C01D5/16 , C01D9/16 , B01D1/26 , B01D9/00 , C02F9/00 , B01D61/14
摘要： An industrial waste salt resourceful treatment method comprises the following steps: the industrial waste salt is sequentially subject to dissolving, chemical pre-purification, deep purification, organic matter concentration reduction, adsorption and oxidation decolorization and multi-effect evaporative crystallization to respectively obtain sodium sulfate, sodium chloride and sodium nitrate crystals; the crystallization temperature of sodium sulfate is in a range of 75° C. to 85° C.; the crystallization temperature of sodium chloride is in a range of 60 to 70° C.; and the crystallization temperature of sodium nitrate is in a range of 45° C. to 55° C. An industrial waste salt resourceful treatment device is further provided.

10. 发明申请

US20120201737A1 Process For Production Of Commercial Quality Potassium Nitrate From Polyhalite 有权
标题翻译：商业质量硝酸钾的生产方法
公开(公告)号：US20120201737A1
公开(公告)日：2012-08-09
申请号：US13380550
申请日：2010-06-27
申请人： Michael Bonan , Eyal Ginzberg , Akiva Mozes , Eyal Barnea , Hugo Keselman , Gideon Friedman , Ron Frim , Cornelis Petrus Langeveld
发明人： Michael Bonan , Eyal Ginzberg , Akiva Mozes , Eyal Barnea , Hugo Keselman , Gideon Friedman , Ron Frim , Cornelis Petrus Langeveld
IPC分类号： C01D9/16
CPC分类号： C22B3/065 , C05C5/02 , C22B3/20 , C22B26/10 , Y02P10/234
摘要： A method for the production of KNO3 from polyhalite is provided. The method comprises steps of decomposing said polyhalite into syngenite, gypsum, and soluble components, treating the solid decomposition products sequentially with HNO3 and Ca basic compound, precipitating the CaSO4 thus formed, and crystallizing the KNO3 from the solution remaining. The method recovers up to 75% of the potassium present in the raw polyhalite as KNO3 and substantially all of the remainder as a potassium magnesium sulfate salt.
摘要翻译：提供了一种从多卤化物生产KNO3的方法。该方法包括将所述多卤化物分解成顺铂，石膏和可溶组分的步骤，依次用HNO 3和Ca碱性化合物处理固体分解产物，沉淀出由此形成的CaSO 4，并从剩余的溶液中结晶出KNO 3。该方法回收高达75％的原始多卤代黄酮中的钾作为KNO 3，并且基本上剩余的所有钾作为硫酸镁钾盐回收。

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