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1. 发明专利

JP2004002166A Manufacturing method for sodium hydrogencarbonate crystal particle with low caking property, and sodium hydrogencarbonate crystal 有权
公开(公告)号：JP2004002166A
公开(公告)日：2004-01-08
申请号：JP2003091444
申请日：2003-03-28
申请人： Asahi Glass Co Ltd , 旭硝子株式会社
发明人： HIRANO HACHIRO , YOKOYAMA KOICHI , YAMAMOTO KIYOSHI , NARIZUKA TEIJI
IPC分类号： C01D7/42 , C01D7/00
CPC分类号： C01D7/42
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method and a wrapping method for sodium hydrogencarbonate (sodium bicarbonate) crystal particles having low caking properties, needing no addition of an anticaking agent, and suitable for the fields of food, medicines, and bath salts.
SOLUTION: The potassium concentration in sodium hydrogencarbonate crystals with an average particle size of 50-500 μm is lowered to 50 mass ppm or lower, preferably to as low as possible, and the carbonate ion concentration (in terms of sodium carbonate) in the crystal particles is lowered to 1 mass% or lower. Such crystal particles can be obtained by washing sodium hydrogencarbonate crystals with water or an aqueous sodium hydrogencarbonate solution and drying or can be obtained by lowering the potassium concentration in a mother liquor to 400 mass ppm or lower in manufacturing the sodium hydrogencarbonate crystal particles by causing the particles to settle from the mother liquor. Thus obtained sodium hydrogencarbonate is sealed with a wrapping material with a moisture permeability (according to JIS Z0208) at 40°C of 5 g/m
2 /day or lower.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004203673A Production method for hardly caking sodium hydrogencarbonate 有权
标题翻译：生产氢化钠的生产方法
公开(公告)号：JP2004203673A
公开(公告)日：2004-07-22
申请号：JP2002374581
申请日：2002-12-25
申请人： Asahi Glass Co Ltd , 旭硝子株式会社
发明人： KIKUCHI SHINTARO , YOKOYAMA KOICHI , HIRANO HACHIRO , SAKURAI SHIGERU
IPC分类号： C01D7/42
摘要： PROBLEM TO BE SOLVED: To provide a method for producing hardly caking sodium hydrogencarbonate (sodium bicarbonate) suitable in the fields of food, medicine, and bath salts and requiring no addition of an anticaking agent.
SOLUTION: (1) Wet sodium hydrogencarbonate particles are kept in contact, for 1-20 min, with a drying gas containing at least 5 vol% carbon dioxide gas, having a water content corresponding to a dew point of 50°C or lower, and being kept at 50-400°C. Otherwise, (2) wet sodium hydrogencarbonate particles are kept in contact, for 1-120 min, with a first drying gas containing at least 5 vol% carbon dioxide gas, having a water content corresponding to a dew point of 55°C or lower, and being kept at 50-400°C and then are brought into contact, for 1-120 min, with a second drying gas containing at least 3 vol% carbon dioxide gas, having a water content corresponding to a dew point not higher than that of the first drying, and being kept at 350°C or lower and at a temperature lower than that of the first drying gas.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：待解决的问题：提供一种适用于食品，药物和浴盐领域的不结块碳酸氢钠（碳酸氢钠）的方法，并且不需要添加抗结块剂。 <1>解决方案：（1）将湿碳酸氢钠颗粒与含有至少5体积％二氧化碳气体的干燥气体保持接触1-20分钟，其含水量相当于露点为50℃ 或更低，并保持在50-400℃。否则，（2）湿碳酸氢钠颗粒与含有至少5体积％二氧化碳气体的第一干燥气体保持接触1-120分钟，其含水量相当于露点为55℃或更低并保持在50-400℃，然后与含有至少3体积％二氧化碳气体的第二干燥气体接触1-120分钟，其含水量不高于第一次干燥，并保持在350℃以下且温度低于第一干燥气体的温度。版权所有（C）2004，JPO＆NCIPI

3. 发明专利

JP2010159208A Method for producing sodium hydrogencarbonate crystal particle having low caking property 有权
标题翻译：用于生产具有低开关性能的氢氧化钠晶体颗粒的方法
公开(公告)号：JP2010159208A
公开(公告)日：2010-07-22
申请号：JP2010049663
申请日：2010-03-05
申请人： Asahi Glass Co Ltd , 旭硝子株式会社
发明人： HIRANO HACHIRO , YOKOYAMA KOICHI , YAMAMOTO KIYOSHI , NARIZUKA TEIJI
IPC分类号： C01D7/42 , C01D7/00
CPC分类号： C01D7/42
摘要： PROBLEM TO BE SOLVED: To provide a method for producing and packaging sodium hydrogencarbonate (baking soda) crystal particles having a low caking property, which do not need the addition of a caking inhibitor thereto and are suitable for use in the fields of food, pharmaceuticals and bath agents.
SOLUTION: Sodium hydrogencarbonate crystal particles having a mean particle diameter of 50-500 μm are produced by deposition from mother liquor of an aqueous solution containing sodium hydrogencarbonate having potassium concentration of ≤400 mass ppm, and the sodium hydrogencarbonate crystal particles are dried using a dry gas having carbon dioxide concentration of ≥3 vol.% to produce sodium hydrogencarbonate crystal particles having potassium concentration of ≤50 mass ppm and carbonate ion concentration of ≤1 mass% in terms of sodium carbonate.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种生产和包装具有低结块性的碳酸氢钠（小苏打）晶体颗粒的方法，其不需要在其上添加结块抑制剂，并且适用于食品，药品和浴剂。解决方案：平均粒径为50-500μm的碳酸氢钠晶体颗粒是通过从含有钾浓度≤400质量ppm的碳酸氢钠的水溶液的母液中沉积而生成的，并且将碳酸氢钠晶体颗粒干燥使用二氧化碳浓度≥3体积％的干燥气体，制成钾浓度≤50质量ppm的碳酸氢钠结晶粒子，碳酸钠的碳酸根离子浓度≤1质量％。版权所有（C）2010，JPO＆INPIT

4. 发明专利

CA1254715A PROCESS FOR PRODUCING ANHYDROUS SODIUM CARBONATE 未知
公开(公告)号：CA1254715A
公开(公告)日：1989-05-30
申请号：CA463397
申请日：1984-09-17
申请人： ASAHI GLASS CO LTD
发明人： NAKAYA KEIICHI , TANAKA KUNIO , YOKOYAMA KOICHI
IPC分类号： C01D7/12
摘要： A process for producing anhydrous sodium carbonaate by the pyrolysis of wet sodium bicarbonate, which comprises (a) a step of forming a complex salt selected from the group consisting of Na2CO3.3NaHCO3 and Na2CO3.NaHCO3.2H2O by the pyrolysis of wet sodium bicarbonate under such temperature and pressure conditions that said complex salt is stable, and (b) a step of forming anhydrous sodium carbonate by the pyrolysis of said complex salt under such temperature and pressure conditions that the anhydrous sodium carbonate is stable.

5. 发明专利

JP2546292B2 失效
公开(公告)号：JP2546292B2
公开(公告)日：1996-10-23
申请号：JP24808687
申请日：1987-10-02
申请人： ASAHI GLASS CO LTD
发明人： NAKAYA KEIICHI , HASEGAWA HARUMITSU , YOKOYAMA KOICHI
IPC分类号： C01B35/06

6. 发明专利

JPS63170214A PARALLEL PRODUCTION FOR CHLORINATED HYDROCARBON AND ALKALINE BICARBONATE 失效
公开(公告)号：JPS63170214A
公开(公告)日：1988-07-14
申请号：JP184087
申请日：1987-01-09
申请人： ASAHI GLASS CO LTD
发明人： NAKAYA KEIICHI , YOKOYAMA KOICHI
IPC分类号： C07C17/156 , C01D7/18 , C07C17/00 , C07C19/045 , C07C67/00
摘要： PURPOSE:To efficiently produce chlorinated hydrocarbon in parallel with alkaline bicarbonate, by producing the alkaline bicarbonate and an ammonium chloride with a reaction which is occurred with NH3, alkaline chloride, gaseous carbon dioxide and water, and using the obtained ammonium chloride as a raw material for production of the chlorinated hydrocarbon. CONSTITUTION:Sodium bicarbonate 40 and ammonium chloride 4 are formed by introducing an aq. soln. of sodium chloride 1, gaseous ammonia 10 and gaseous carbon dioxide 20 into a carbonation column B and the sodium bicarbonate 40 is separated and recovered with a separation equipment C. And the gaseous ammonia and a hydrochloride of amine are formed by introducing the ammonium chloride 4 into a multistage column H and bringing to react with the volatile amine (e.g. t-buthyl amine). Then the gaseous ammonia 115 is repeatedly used for the reaction of sodium bicarbonate formation. On the other hand, the chlorinated hydrocarbon (e.g. 1,2-dichloroethane) is produced by introducing the hydrochloride of amine 130 into a reactor M via an oxidation reactor T and allowing to react with ethylene.

7. 发明专利

JPH0464733B2 失效
公开(公告)号：JPH0464733B2
公开(公告)日：1992-10-15
申请号：JP23443586
申请日：1986-10-03
申请人： ASAHI GLASS CO LTD
发明人： NAKAYA KEIICHI , YOKOYAMA KOICHI , AIKAWA TAKEO
IPC分类号： B01J2/22

8. 发明专利

JPH0353244B2 失效
公开(公告)号：JPH0353244B2
公开(公告)日：1991-08-14
申请号：JP2437784
申请日：1984-02-14
申请人： ASAHI GLASS CO LTD
发明人： NAKAYA KEIICHI , YOKOYAMA KOICHI
IPC分类号： C01B21/16

9. 发明专利

JPH02141416A PRODUCTION OF WATER GLASS 失效
公开(公告)号：JPH02141416A
公开(公告)日：1990-05-30
申请号：JP29357488
申请日：1988-11-22
申请人： ASAHI GLASS CO LTD
发明人： NAKAYA KEIICHI , YOKOYAMA KOICHI , KANEDA TOMOHARU , ANDO KAZUHIRO , YAMAMOTO TOSHIAKI
IPC分类号： C01B33/32 , C01B39/14 , C01B39/50
摘要： PURPOSE:To improve filterability and to shorten the time required to produce water glass when sodium silicate is dissolved in water to produce water glass by adding seed crystals for increasing the grain size of deposited impurities. CONSTITUTION:Sodium silicate is dissolved in water, seed crystals are added to the resulting soln. to increase the grain size of deposited impurities and the soln. is filtered to produce water glass. Crystals of zeolite contg. Ca and/or Mg as a cation source, e.g., 5A type zeolite are suitable for use as the seed crystals. Even when cullet of sodium silicate glass having a high impurity content obtd. by melting and cooling a mixture of silica sand with soda ash is used as starting material for sodium silicate, water glass can be produced with high work efficiency.

10. 发明专利

JPH01208315A PRODUCTION OF SODIUM BICARBONATE 失效
公开(公告)号：JPH01208315A
公开(公告)日：1989-08-22
申请号：JP3194888
申请日：1988-02-16
申请人： ASAHI GLASS CO LTD
发明人： NAKAYA KEIICHI , YOKOYAMA KOICHI
IPC分类号： C01D7/18
摘要： PURPOSE:To obtain sodium bicarbonate particles having large particle size in high efficiency, by returning a part of mother liquor left after the separation of sodium bicarbonate to a feeding liquid system in the production of NaHCO3 from ammoniacal saline water and a CO2-containing gas and recycling the mother liquor. CONSTITUTION:Ammoniacal saline water 1 is supplied to a preliminary carbonation column A and carbonated to a neutralized ammoniacal saline water 2 with a CO2- containing exhaust gas 9 discharged from a carbonation column C composed of a reaction zone having plural stages. A feeding liquid composed of said neutralized ammoniacal saline water 2 is mixed with a part of mother liquor 7 left after the separation of sodium bicarbonate to obtain a liquid mixture 3. The volume ratio of the mother liquor left after the separation of sodium bicarbonate to the feeding liquid is selected to 0.2-1.5. The liquid mixture is cooled to a prescribed temperature with a cooler B and the obtained feeding liquid 4 is supplied to the carbonation column C. The slurry 5 containing precipitated sodium bicarbonate is separated into sodium bicarbonate 6 and the separated mother liquor 7 with a separator D. As mentioned above, a part of the separated mother liquor 7 is mixed with neutralized ammoniacal saline water and the remaining part of the liquor is sent to a distillation stage.

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