Citric Acid → Tricalcium Citrate

HRID 248212

反応式

HRID 248212 の反応式
[C:1]([OH:13])(=[O:12])[CH2:2][C:3]([CH2:8][C:9]([OH:11])=[O:10])([C:5]([OH:7])=[O:6])[OH:4].[OH-].[Ca+2:15].[OH-]>O>[C:1]([O-:13])(=[O:12])[CH2:2][C:3]([CH2:8][C:9]([O-:11])=[O:10])([C:5]([O-:7])=[O:6])[OH:4].[Ca+2:15].[C:1]([O-:13])(=[O:12])[CH2:2][C:3]([CH2:8][C:9]([O-:11])=[O:10])([C:5]([O-:7])=[O:6])[OH:4].[Ca+2:15].[Ca+2:15]

参加物

4

反応物 2

HCID 311Citric Acid4 回HCID 6093208Calcium Hydroxide4 回

生成物 1

HCID 13136Tricalcium Citrate

試薬・触媒・溶媒 1

HCID 962Water溶媒4 回

反応条件

温度
134 fahrenheit

実験手順

A calcium citrate sample was prepared by reacting 2763.8 lbs. of citric acid with 1600 lbs. calcium hydroxide (97-98% Ca(OH)2 by analysis) in the presence of 1250.5 gallons of water. The mole ratio of calcium hydroxide to citric acid was very slightly less than 3:2, actually 2.92:2. The citric acid (Pfizer fine granular, food grade) was mixed in a large batch tank with 600 gallons of cold water. The calcium hydroxide (Mississippi Lime, hydrated lime, food codex) was mixed in a separate batch tank with 600 gallons of cold water. The calcium hydroxide slurry is then pumped into the citric acid solution at a rate to deliver the entire slurry in 10-15 minutes. It is necessary to have good agitation during the entire reaction and mixing process. The remaining 50.5 gallons of water is used to rinse the calcium hydroxide tank and transport lines. Due to the heat of reaction, the temperature of the resultant slurry was increased from an initial value of 15° C. (60° F.) to a maximum of 57° C. (134° F.). After the reaction is complete, the batch is cooled to 80°-90° F. The final pH of this concentrated slurry should fall within the range 3.8-4.6 or can be adjusted up or down using the reacting ingredients. The slurry is then dried via spray drying utilizing a rotary wheel (7600 rpm). The outlet temperature was adjusted to 225° F. and the inlet temperature was 450° F.

後処理

  1. customin 10-15 minutes
  2. customduring the entire reaction
  3. additionmixing process
  4. washto rinse the calcium hydroxide tank and transport lines
  5. temperatureDue to the heat of reaction
  6. temperaturethe batch is cooled to 80°-90° F
  7. customThe slurry is then dried via spray
  8. customdrying
  9. customwas adjusted to 225° F.
  10. customwas 450° F.

出典と根拠

ORDレコード
ord-0157df14b03d4a8eb75b4a5c6de27790
出典データセット
uspto-grants-1993_05
特許番号
US05208372

関連ノート

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