沸石法苦卤提钾工艺研究

doi:10.11962/1006-4990.2019-0153

Abstract

Abstract:

Based on ion exchange technology,the potassium extraction technology from bittern was studied.The modified clinoptilolite and sodium chloride solution were respectively as ion exchanger and eluent.The single-column experiments showed higher elution temperature,higher concentration of eluent and appropriate flow rate were beneficial to potassium enrichment.The adsorption adopted the simulated moving bed process,which feeding order was low concentration solution and bittern in turn.The average adsorption rate of potassium ion was above 95%.The elution adopted fixed bed process,which feeding order was high concentration solution,middle concentration solution,low concentration solution after adsorption and sodium chloride solution of 25%（mass fraction）.Average mass concentration of potassium chloride in the potassium-rich brine was 35.39 g/L,which rose 2.7 times higher than the bittern.At the same time of potassium enrichment,the impurities had been effectively removed in bittern,such as magnesium ion and sulfate ion.This research lays a foundation for high efficiency and energy saving on potassium ion extraction of bittern.

Key words: potassium enrichment, bittern, modified clinoptilolite, simulated moving bed

CLC Number:

TQ131.13

Wang Mucun,Guo Xiaofu,Zhao Yingying,Yuan Junsheng. Process of potassium extraction from bittern with modified clinoptilolite[J]. Inorganic Chemicals Industry, 2020, 52(2): 23-29.

Figures/Tables 20

References 18

[1]	沈镭, 武娜, 钟帅 , 等. 经济新常态下中国矿业供给侧改革发展战略研究[J]. 中国人口、资源与环境, 2017,27(7):8-17.
[2]	陈峥, 刘素芹, 张金娜 . 高纯氧化镁的研究与开发[J]. 盐科学与化工, 2017,46(4):32-35.
[3]	袁俊生, 吴举, 邓会宁 , 等. 中国海盐苦卤综合利用技术的开发进展[J]. 盐业与化工, 2006,35(4):33-37.
[4]	李东洋, 李先国, 冯丽娟 , 等. 卤水中钾和镁的利用[J]. 无机盐工业, 2011,43(11):12-14.
[5]	王世忠 . 以苦卤为原料制取氯化钾的兑卤新工艺[J]. 盐业与化工, 2014,43(5):1-3.
[6]	张浩, 祝桂林, 李明达 . 食用氯化钾生产工艺节能改造[J]. 无机盐工业, 2014,46(2):51-53.
[7]	田凤超, 王惠霞 . 苦卤脱硫改善氯化钾生产工艺的实验研究[J]. 盐业与化工, 2015,44(11):40-42.
[8]	詹光, 郭占成 . 从KCl-NaCl浸出液中分离提纯氯化钾的多效蒸发结晶能耗分析研究[J]. 计算机与应用化学, 2014,31(5):555-561.
[9]	袁俊生, 纪志永, 陈建新 . 海水化学资源利用技术的进展[J]. 化学工业与工程, 2010: 27, 110-116.
[10]	袁俊生, 郭小甫, 王士钊 , 等. 一种基于耦合技术的大型富钾的方法及其装置:中国,107673372A[P]. 2018 -02-09.
[11]	袁俊生, 吕铮 . 一种沸石法从海水提取硫酸钾的方法:中国,1386704A[P]. 2002 -12-25.
[12]	谢英惠, 王维佳, 袁俊生 , 等. 模拟移动床连续处理含钙废水[J]. 非金属矿, 2017(1):89-92.
[13]	王士钊 . 斜发沸石对钾离子交换特性的研究[D]. 天津:河北工业大学, 2002.
[14]	袁俊生 . 离子交换法海水提钾技术的应用基础研究[D]. 天津:天津大学, 2005.
[15]	袁俊生, 王静康 . 型斜发沸石Na⁺-K⁺离子交换特性研究（Ⅰ）——离子交换过程热力学特性[J]. 离子交换与吸附, 2004,20(6):541-547.
[16]	Yuan J S, Zhao Y Y, Li Q H , et al. Preparation of potassium ionic sieve membrane and its application on extracting potash from sea-water[J]. Separation and Purification Technology, 2012,99:55-60.
[17]	袁俊生, 王静康 . 钠型斜发沸石Na⁺-K⁺离子交换特性研究（Ⅱ）——过程传质模型及动力学特性研究[J]. 离子交换与吸附, 2005,21(2):127-136.
[18]	Guo X F, Ji Z Y, Yuan J S , et al. Recovery of K⁺ rom concentrates from brackish and seawater desalination with modified clinoptilo-lite[J]. Desalination and Water Treatment, 2016,57(15):6829-6837.

名称	化学组成/（g·L^-1）					密度/ （g·cm^-3）
名称	ρ （KCl）	ρ （MgCl₂）	ρ （CaSO₄）	ρ （MgSO₄）	ρ （NaCl）	密度/ （g·cm^-3）
苦卤	13.01	117.51	0.20	67.77	166.60	1.25
洗脱剂	—	—	—	—	295	1.18

床层高度/m	吸附过程	洗脱过程
床层高度/m	平均吸附率/%	氯化钾质量浓度峰值/（g·L^-1）	富钾卤水体积/L	氯化钾平均质量浓度/（g·L^-1）
3	32.46	27.13	0.50	27.13
6	36.26	30.07	1.50	27.57
9	46.35	34.56	4.00	31.14
12	48.98	35.72	4.00	31.94

化学组成/（g·L^-1）					密度/ （g·cm^-3）
ρ（KCl）	ρ（MgCl₂）	ρ（CaSO₄）	ρ（MgSO₄）	ρ（NaCl）	密度/ （g·cm^-3）
35.40	10.08	0.99	1.52	251.60	1.20

周期	吸附过程	洗脱过程
周期	平均吸附率/%	氯化钾质量浓度峰值/（g·L^-1）	富钾卤水体积/L	氯化钾平均质量浓度/（g·L^-1）
1	44.30	40.69	5.00	34.17
2	45.47	41.20	5.00	34.58

周期	吸附过程	洗脱过程
周期	平均吸附率/%	氯化钾质量浓度峰值/（g·L^-1）	富钾卤水体积/L	氯化钾平均质量浓度/（g·L^-1）
1	45.86	34.96	4.00	31.10
2	44.74	35.47	4.00	32.15

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Process of potassium extraction from bittern with modified clinoptilolite

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 20

References 18

Related Articles 8

Metrics

Comments

Recommended 10

工艺	氯化钾质量浓度峰值/（g·L^-1）	富钾卤水体积/ L,提升比例	氯化钾平均质量浓度/（g·L^-1）,提升比例
未改进	34.56	4.00,—	31.14,—
工艺1	41.20	5.00,25%	35.93,15.38%
工艺2	35.47	4.00,0%	32.15,3.24%

[1]	Zhao Chuang,Fan Jingxin,Guo Chunlei,Li Ben,Li Bin,Zang Jiazhong,Wang Yang,Hou Liwei,Sun Zhenhai. Study on deactivation of diesel aromatic adsorbent [J]. Inorganic Chemicals Industry, 2020, 52(8): 98-102.
[2]	Li Yuanchao,Li Qiuxia,Yang Ruiguang,Xu Wenhui. Determination of sulfate ion content in high concentration bittern by ion chromatography [J]. Inorganic Chemicals Industry, 2019, 51(6): 69-71.
[3]	YANG Zhao-Juan, CUI Zhen-Hua, CUI Xiang-Mei, LI Xiao-Kun. Study on evaporation process of salt lake brine raw material of magnesium products [J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(3): 25-.
[4]	ZHANG Yi-Yong, SHI Min, YU Xue-Feng, HU Cheng-Yin. Comparison of preparation technologies of high purity magnesia by limestone-bittern method and ammonia method [J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(1): 45-47.
[5]	Zhang Mei;Yang Haining;Zhang Xiaoxia;Wang Chuanying. Preparation of polyaluminium ferrous chloride by using cryolite mother liquor [J]. INORGANICCHEMICALSINDUSTRY, 2010, 0(3): 0-0.
[6]	Cao Guojin;Wu Zhiming;Pang Yuna;Zhou Yuan. Effects of borate on determination of sulfate radical by barium sulfate gravimetric method in high boron bittern system [J]. INORGANICCHEMICALSINDUSTRY, 2009, 0(2): 0-0.
[7]	Zhang Zixing;Liu Hailong;Yang Fengling;Cheng Fangqin. Study on decoloration of bittern by hydrogen peroxide oxidative [J]. INORGANICCHEMICALSINDUSTRY, 2008, 0(3): 0-0.
[8]	Zhao Xiuping. Impact of organics in bittern on the quality of BaSO4 products [J]. INORGANICCHEMICALSINDUSTRY, 2008, 0(11): 0-0.