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化学工业与工程
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��ѧ��ҵ�빤�� 2007, Vol. 24 Issue (5) :420-423    DOI:
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Separation Process of Sodium Chloride from Synthesized Betaine by Extraction Crystallization
WANG Shuang-ping~1,JIN Deng-chao~2,HU Jun-feng~3,WANG Fu-min~1(1.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;2.Department of Electromechanical Engineering,Tianjin Agricultural University, Tianjin 300084,China;3.Jinan Branch,China-Bluestar Petroleum Co.,Ltd.,Jinan 250101,Shandong Province,China)
(1.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;2.Department of Electromechanical Engineering,Tianjin Agricultural University, Tianjin 300084,China;3.Jinan Branch,China-Bluestar Petroleum Co.,Ltd.,Jinan 250101,Shandong Province,China
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Abstract�� Extraction crystallization,a new method for the separation of sodium chloride in betaine synthesis process,was introduced.Methanol was selected as the extractant to make the sodium chloride separate out to improve the purity of betaine.The results of the phase diagram and experiments indicated that after the disposal of ordinary distillation,the more the composition approached the saturated composition(m(betaine)��m(sodium chloride)��m(water)=3��1��1),the more sodium chloride was separated out.Furthermore,when the dosage of methanol was 75.3% in total,the crystal amount of the sodium chloride reached the most.
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Received 2007-09-15; published 2007-09-15
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��˫ƽ;���dz�;������;������;.��ȡ�ᾧ������ϳ���˼����Ȼ���[J].  ��ѧ��ҵ�빤��, 2007,24(5): 420-423
WANG Shuang-ping~1,JIN Deng-chao~2,HU Jun-feng~3,WANG Fu-min~1.Separation Process of Sodium Chloride from Synthesized Betaine by Extraction Crystallization[J].  Chemcial Industry and Engineering, 2007,24(5): 420-423
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