盐硝联产芒硝水不溶物的产生与控制

doi:10.19964/j.issn.1006-4990.2021-0649

Abstract

Abstract:

In view of the excessive content of water insoluble matter in the five?effect evaporation process of vacuum NaCl-Na₂SO₄ co?production，which leads to excessive brine turbidity and affects the quality of sodium sulfate，it is of great significance to study and analyze the source of water insoluble substance and find out the method to control the water insoluble substance.X-ray diffraction（XRD），scanning electron microscopy（SEM-EDS） and infrared spectroscopy（FT-IR） modern analysis techniques were used to analyze the phase composition and morphology characteristics of water insolubles in sodium sulfate.It was determined that the main component of water insoluble in sodium sulfate was calcite calcium carbonate.It was found that the formation of water insoluble matter was mainly due to the high calcium ion concentration in the salt system.At this time，the solution was in an unstable state with high supersaturation，rapid precipitation of calcium carbonate，large number of crystals and small particles.The small particle calcium carbonate floated in the circulating brine and entered the sodium sulfate system through brine transfer，which was added with the calcium carbonate produced by the sodium sulfate system itself，resulting in the content of insoluble matter in sodium sulfate exceeding the standard.Aiming at this problem，the scheme of source regulation was put forward.In the purification process，when the addition amount of sodium carbonate was adjusted from 1.32 g/L to 1.35~1.38 g/L，the balance between calcium and carbonate in brine could be controlled，and the calcium ion concentration in salt and sodium sulfate system could be reduced，so as to control the excessive content of water insoluble substances.In the new round of industrial production，using the method of source control，the water insoluble matter in sodium sulfate had been effectively controlled，and the quality of sodium sulfate had been significantly improved.

Key words: vacuum salt making, co-production of salt and sodium sulfate, sodium sulfate, water insoluble substance

CLC Number:

TQ131.12

ZHENG Sanqiang,LI Xingbin,LUO Xingguo,WEI Chang,HUANG Xing,DENG Zhigan,LI Minting. Production and control of water insoluble substance in sodium sulfate produced by NaCl-Na₂SO₄ co?production[J]. Inorganic Chemicals Industry, 2022, 54(8): 90-95.

Figures/Tables 8

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

References 17

1	苏家庆.真空制盐［M］.北京：轻工业出版社，1983：1-5.
	SU Jiaqing.Vacuum salt［M］.Beijing：Light Industry Press，1983：1-5.
2	李宏伟，罗兴国，杨丽梅，等.真空蒸发盐硝联产换热系统结垢分析［J］.中国井矿盐，2021，52（4）：15-18.
	LI Hongwei， LUO Xingguo， YANG Limei，et al.Scaling analysis of heat exchange system for salt and mirabilite co⁃production by va⁃
	cuum evaporation［J］.China Well and Rock Salt，2021，52（4）：15-18.
3	彭赛军，李家强.芒硝型卤水原卤热法分离盐硝工艺研究建议［J］.中国井矿盐，2021，52（2）：1-3.
	PENG Saijun， LI Jiaqiang.Study suggestion on separation of salt nitrat by thermal method of raw brine of mirabilite type brine［J］.China Well and Rock Salt，2021，52（2）：1-3.
4	王卫，席洋，李荣.盐硝联产改五效真空制盐工艺改造［J］.中国井矿盐，2018，49（4）：3-6.
	WANG Wei， XI Yang， LI Rong.Salt⁃nitre production transforming into five⁃effect vacuum salt making technique［J］.China Well and Rock Salt，2018，49（4）：3-6.
5	王倩倩.碳酸钙矿物的晶型调控试验研究［D］.包头：内蒙古科技大学，2020.
	WANG Qianqian.Study on crystal regulation of calcium carbonate mineral［D］.Baotou：Inner Mongolia University of Science & Technology，2020.
6	KETRANE R， SAIDANI B， GIL O，et al.Efficiency of five scale inhibitors on calcium carbonate precipitation from hard water：Effect of temperature and concentration［J］.Desalination，2009，249（3）：1397-1404.
7	WU Zhen， DAVIDSON J H， FRANCIS L F.Effect of water chemistry on calcium carbonate deposition on metal and polymer surfac⁃
	es［J］.Journal of Colloid and Interface Science，2010，343（1）：176-187.
8	YANG Xiaodeng， XU Guiying， CHEN Yijian，et al.CaCO₃ crystallization controlled by（2-hydroxypropyl-3-butoxy） propylsuccinyl chitosan［J］.Powder Technology，2012，215/216：185-194.
9	GOPI S P， VIJAYA P， SUBRAMANIAN V K.Morphological and crystallization process of CaCO₃ in the presence of Aqua soft 330（AS 330）［J］.Powder Technology，2012，225：58-64.
10	DINAMANI M， KAMATH P V， SESHADRI R.Electrochemical synthesis of calcium carbonate coatings on stainless steel substrates［J］.Materials Research Bulletin，2002，37（4）：661-669.
11	斯泽浩.结晶热力学及成核动力学数值化建模与分析［D］.上海：华东理工大学，2021.
	SI Zehao.Numerical model and analysis for crystallization thermodynamics and nucleation kinetics［D］.Shanghai：East China University of Science and Technology，2021.
12	杜智英.井矿盐注、采卤管道结垢的影响因素及阻垢剂遴选［D］.东营：中国石油大学（华东），2017.
	DU Zhiying.The influence factors of pipeline scaling and selection of scale inhibitors［D］.Dongying：China University of Petroleum（Huadong），2017.
13	崔红艳.基于成核动力学理论的EDTA对不同种类水垢形成的影响及机理研究［D］.呼和浩特：内蒙古大学，2021.
	CUI Hongyan.The study of the effect and mechanism of EDTA on the formation of different forms scale based on nucleation kinetics theory［D］.Hohhot：Inner Mongolia University，2021.
14	KELLAND M A.Effect of various cations on the formation of calcium carbonate and Barium sulfate scale with and without scale inhibitors［J］.Industrial & Engineering Chemistry Research，2011，50（9）：5852-5861.
15	TUNG N P， PHONG N T P， LONG B Q K，et al.Scale inhibitors for co⁃deposited calcium sulfate and calcium carbonate in squeeze doi: 10.2118/87467-
	process in white tiger oilfield［C］∥All Days.May 26-27，2004.Aberdeen，United Kingdom.SPE，2004.Doi：10.2118/87467- doi: 10.2118/87467-
	MS. doi: 10.2118/87467-
16	柳月浩，张德州，刘烨，等.真空制盐过程结垢与阻垢研究进展［J］.中国井矿盐，2021，52（5）：18-21.
	LIU Yuehao， ZHANG Dezhou， LIU Ye，et al.Research progress of scale and scale inhibition in vacuum salt production［J］.China Well and Rock Salt，2021，52（5）：18-21.
17	郝玉，陈证旭.阻垢剂作用机理介绍及应用前景［J］.化学工程师，2020，34（11）：58-61.
	HAO Yu， CHEN Zhengxu.Mechanism of scale inhibitor and its application prospect［J］.Chemical Engineer，2020，34（11）：58- 61.

[1]	LIU Xiaowen, LI Jun, ZHOU Zhaoan, MAO Anzhang, ZHOU Aiqing. Study on response surface methodology optimization of PAC for deep purification of fluorine ion in high concentration sodium sulfate solution [J]. Inorganic Chemicals Industry, 2024, 56(6): 67-72.
[2]	LI Hongyuan, ZHANG Jianhua. Study on removal process of total organic carbon from industrial waste salts by pyrolysis [J]. Inorganic Chemicals Industry, 2024, 56(10): 95-102.
[3]	WEI Tianshun, JI Lijun, SHENG Yong, CHEN Kui, WU Yanyang, WU Bin. Study on fractional crystallization process of ammonium sulfate and sodium sulfate in high salt wastewater [J]. Inorganic Chemicals Industry, 2024, 56(1): 102-106.
[4]	ZHOU Zhaoan, LI Jun, LIU Xiaowen, ZHOU Aiqing, MAO Anzhang. Study on carbonization and purification process of high COD industrial waste salt [J]. Inorganic Chemicals Industry, 2023, 55(9): 100-105.
[5]	WANG Bingjian,QI Daozheng,CHEN Deng. Degradation processes and mechanism of tricalcium aluminate in different sulfate environment [J]. Inorganic Chemicals Industry, 2022, 54(8): 119-124.
[6]	LIU Zhuang,AN Jimin,LI Yongjun,CHEN Xing,ZHAO Yigang,ZHAI Ruiguo. Effect of impurity in alkaline washing oxidation process on crystal size of sodium sulfate [J]. Inorganic Chemicals Industry, 2022, 54(4): 123-127.
[7]	Tian Haiying,Zhou Fu,Xu Chuan,Tu Mingjiang,Zhong Zhaozi,Liao Shiying,Li Shihong. Application research of Li⁺,Na⁺,K⁺,SO₄^2--H₂O system phase diagram in MVR evaporation process [J]. Inorganic Chemicals Industry, 2021, 53(8): 75-78.
[8]	Wang Yanfei,Jiao Jian,Jiang Shuwan,Xu Shijie. Study on nucleation kinetics of sodium sulfate-water system based on inverse solubility [J]. Inorganic Chemicals Industry, 2021, 53(10): 41-46.
[9]	Zhang Bingbing,Ren Jianpo,Shen Zhihong,Jiang Zhiqiang. Experimental study on tail gas absorption in synthesis of 2,3-pyridinedicarboxylic acid [J]. Inorganic Chemicals Industry, 2020, 52(7): 74-76.
[10]	Liao Enxin,Chen Lifang,Zhang Zeya,Bai Fengxia. Experimental study on preparing potassium sulfate by sodium sulfate and potassium chloride [J]. Inorganic Chemicals Industry, 2020, 52(10): 106-109.
[11]	Chen Xia, Bai Fengxia, Shi Yapeng, Dong Sicheng, Liao Enxin, Li Ying, Miao Shulan. Experimental research of preparation of potassium sulfate from high-salt wastewater in coal chemical industry by double decomposition method [J]. Inorganic Chemicals Industry, 2019, 51(6): 57-61.
[12]	ZHANG Shu-Yang. Novel production process of analytical grade sodium sulfate [J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(7): 48-.
[13]	. China′s anhydrous sodium sulfate industry should gradually achieve misplace development [J]. INORGANICCHEMICALSINDUSTRY, 2015, 47(7): 1-.
[14]	MA Tang-Wen, WANG Zhi-Liang, WANG Li-Chao, ZHAO Yu-Ming. Experimental study on organics in sodium sulfate simulation samples by medium temperature gasification [J]. INORGANICCHEMICALSINDUSTRY, 2015, 47(2): 24-.
[15]	ZHU Zhi-Qing, WANG Ke. Preparation of potassium sulphate from separation of mixed solution of potassium and sodium salts with improved methanol salting-out method [J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(7): 18-.

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Production and control of water insoluble substance in sodium sulfate produced by NaCl-Na₂SO₄ co?production

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 8

References 17

Related Articles 15

Metrics

Comments

Recommended 0

Production and control of water insoluble substance in sodium sulfate produced by NaCl-Na2SO4 co?production