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A new industrial process of NaHCO3 and its crystallization kinetics by using the common ion effect of Na2CO3
Jiang, Shifeng1,2; Zhang, Yuande1; Li, Zhibao2
2019-03-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume360Pages:740-749
Abstract

Sodium bicarbonate (NaHCO3) has been conventionally manufactured by a carbonation synthesis from the reaction of sodium carbonate (Na2CO3) and CO2 in a carbonation column. To enhance the quality and the production yield of NaHCO3, it is imperative to carefully control supersaturation in the carbonation crystallization process and make NaHCO3 concentration of filtrate obtained from column bottom possibly least. A new method of NaHCO3 production was proposed with help of common ion effect by adding Na2CO3 as feed in filtering liquor. A cooling crystallizer was incorporated in the system after the carbonation tower to generate more NaHCO3. The crystallization kinetics of NaHCO3 including nucleation and crystal growth was experimentally and theoretically investigated in a continuous mixed-suspension-mixed-product removal (MSMPR) crystallizer cooled from 353 to 308 K. The effect of Na2CO3 concentration and additives on the crystallization of NaHCO3 was studied. The growth and nucleation rate G(V) = 6.618 x 10(-15)sigma(0.290), B = 2.560 x 10(-32) G(V)(-3.82) M-T(1.11) were determined by moments analysis based on the experimental crystal size distribution (CSD) data. The kinetic parameters in two empirical equations were estimated by linear regression with the 0.290 of the relative supersaturation rate order, indicating that the meant surface integration and diffusion play an equally importance to the growth of NaHCO3 crystal. The growth rate order of -3.82 suggested that nucleation of NaHCO3 from the Na2CO3-rich solution in the MSMPR crystallizer was particle size-limiting.

KeywordSodium Bicarbonate Sodium Carbonate Growth Nucleation Kinetics
DOI10.1016/j.cej.2018.12.028
Language英语
WOS KeywordSodium-bicarbonate ; Precipitation Kinetics ; System ; Nucleation ; Carbonate ; Solubility ; Water
Funding ProjectJinjing (Group) Corporation Co., Ltd. ; Shandong Haitian Biological Chemical Co., Ltd. ; National Natural Science Foundation of China[21476235] ; National Natural Science Foundation of China[21506218]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationJinjing (Group) Corporation Co., Ltd. ; Shandong Haitian Biological Chemical Co., Ltd. ; National Natural Science Foundation of China
WOS IDWOS:000460964000075
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28286
Collection中国科学院过程工程研究所
Corresponding AuthorJiang, Shifeng; Li, Zhibao
Affiliation1.Jinjing Grp Corp, Qingdao Fanen Technol Co Ltd, Qingdao 266042, Shandong, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Shifeng,Zhang, Yuande,Li, Zhibao. A new industrial process of NaHCO3 and its crystallization kinetics by using the common ion effect of Na2CO3[J]. CHEMICAL ENGINEERING JOURNAL,2019,360:740-749.
APA Jiang, Shifeng,Zhang, Yuande,&Li, Zhibao.(2019).A new industrial process of NaHCO3 and its crystallization kinetics by using the common ion effect of Na2CO3.CHEMICAL ENGINEERING JOURNAL,360,740-749.
MLA Jiang, Shifeng,et al."A new industrial process of NaHCO3 and its crystallization kinetics by using the common ion effect of Na2CO3".CHEMICAL ENGINEERING JOURNAL 360(2019):740-749.
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