添加剂对结晶法净化磷酸的影响研究

Abstract

Abstract: Suspension crystallization was adopted to purify phosphoric acid with industrial grade phosphoric acid as raw material.Influences of sulfuric acid,hydrochloric acid,hydrofluoric acid,polyacrylic acid,tartaric acid,citric acid,EDTA-2Na，and sodium dodecylbenzensulfonate on phosphoric acid purification effect were investigated respectively.Experimental results indicated that the effects of hydrochloric acid and hydrofluoric acid on purification were better than others.Then the influences of their mass fractions on phosphoric acid purification were studied,it was found that the optimal mass fractions of hydrochloric acid and hydrofluoric acid were 0.2% and 0.8% respectively.Under those optimal conditions, phosphoric acid was re-crystallized.Results showed that there was a better purification effect with hydrofluoric acid as the additive and the concentration of Fe3⁺ and Al³⁺ were both under 1 mg/kg.

Key words: phosphoric acid, additive, crystallization, purification

CLC Number:

TQ126.35

WANG Bao-Ming, LI Jun, LUO Jian-Hong, LUO Ni. Study on effects of additives on purifying phosphoric acid by crystallization[J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(2): 26-.

[1]	BAI Chaopeng, PENG Hui, CHEN Yuting, LUO Jiang, ZHANG Shengming. Research progress of recovery，purification and recycling of ruthenium from scrap ruthenium materials [J]. Inorganic Chemicals Industry, 2024, 56(4): 24-33.
[2]	TAO Longhai, WANG Yongjie, DUAN Jiatang, SHU Yizhou, WAN Banglong, HUANG Chengdong, ZHANG Yueqiang, LU Zhenya. Research progress and prospect of sludge acid and raffinate acid by-product of wet-process phosphoric acid [J]. Inorganic Chemicals Industry, 2024, 56(3): 12-18.
[3]	SU Xin, LAI Dongmei, ZHOU Yuan, ZHU Xiaping. Study on preparation process of strontium rich functional salt from Zigong underground brine [J]. Inorganic Chemicals Industry, 2024, 56(3): 45-50.
[4]	ZHANG Li, ZHANG Dan, PAN Hongyan, DONG Yonggang, LI Wenfei, QIN Hong. Study on preparation of low ash activated carbon by phosphoric acid method [J]. Inorganic Chemicals Industry, 2024, 56(2): 95-103.
[5]	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.
[6]	CHEN Xu, YANG Gang, LI Haitao. Study on preparation of multistage pore nano-SAPO-34 molecular sieves and its methanol to olefin performance [J]. Inorganic Chemicals Industry, 2024, 56(1): 134-140.
[7]	JIN Shengshi, LIU Kaijie, LIU Qiuwen, ZHANG Yibo, YANG Xiangguang. Study on catalytic performance of phosphoric acid modified CeO₂ nanorod supported Pt catalyst for propane combustion [J]. Inorganic Chemicals Industry, 2024, 56(1): 141-148.
[8]	ZHANG Ying, LI Jun, JIN Yang, HUANG Meiying. Study on pyrolysis regeneration of activated carbon for Tributyl phosphate decolorization [J]. Inorganic Chemicals Industry, 2024, 56(1): 59-66.
[9]	GAN Shunpeng, DING Ding, SUN Chenggao, JIANG Shipeng, GUAN Junfang. Study on cold decomposition crystallization process of underground primary high-sodium carnallite ore [J]. Inorganic Chemicals Industry, 2024, 56(1): 67-72.
[10]	XIONG Xiaoyun, CAO Gengzhen, DU Xuemin, WANG Jiujiang, HU Qingxun. Preparation of macroporous in situ crystallized FCC catalyst by carbon black template method [J]. Inorganic Chemicals Industry, 2023, 55(9): 134-139.
[11]	LI Yan, MA Zhen, SONG Xingfu. New development advance and industrial development proposals of chloride-type salt lake potassium resources in Qinghai [J]. Inorganic Chemicals Industry, 2023, 55(8): 84-90.
[12]	LI Jiaqiang, LI Jun, JIN Yang, CHEN Ming. A gas chromatographic analysis method for acetic acid content in phosphoric acid and acetic acid mixed system [J]. Inorganic Chemicals Industry, 2023, 55(5): 115-120.
[13]	CHEN Xinyi, ZHANG Hua, FANG Wei, XU Xiaofeng. Application of metal-organic frameworks in fields of natural gas purification and storage [J]. Inorganic Chemicals Industry, 2023, 55(4): 13-19.
[14]	LAN Yinghua, CHEN Yanmei, MA Ruixiao, ZHANG Yanhui. Preparation and photocatalytic performance of Ce-Ti oxide-attapulgite composites [J]. Inorganic Chemicals Industry, 2023, 55(4): 133-140.
[15]	WANG Song, WANG Jiawei, GOU Bibo, YANG Pan, HE Yue, YANG Chunyuan, WANG Haifeng. Study on distribution law of magnesium in leaching solution of rhodochrosite by complex salt crystallization method [J]. Inorganic Chemicals Industry, 2023, 55(4): 65-71.

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on effects of additives on purifying phosphoric acid by crystallization

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0