Hydrofluoric Acid (HF) from FSA



Anhydrous hydrofluoric acid by the (Fluosilicic Acid) FSA process 


AHF from FSA 


See Download - Process Technologies Datasheets - Fluorine Technologies

Optional Technical Features


- Non-pressurized distillation of AHF
- AHF safety storage (non pressurized tanks inside containment tank)
- HF dilution unit
- Arsenic removal unit
- Wastewater neutralization
- AHF Plants with Zero effluents
- Reduced use of strong sulphuric acid
- Major breakthrough: also technology without impact on the water mass balance of the phosphoric acid plant





 Modeling and simulating HF reaction


- Multiphase system
- Electrolyte model, with activity coefficient calculation
- Solids, liquid entrainment
- HF gas phase with species HF, (HF)2, (HF)3, (HF)4, (HF)5, (HF)6, (HF)7
- Species HSO3F, H2SIF6, all P species as POF3, PF5, all As species as AsF3, AsF5, CaSO4 solubility, HCl
- Material and heat balance
- Calculation of consumption figures of Fluosilicic acid, sulphuric acid





Simulation and data reconciliation of HF pilot plant using fluosilicic acid as starting raw material


RESULTS = Mass balance deviation is few percents only.





China Hydrofluoric Acid Industry Report, 2009-2010 Report-Research In China:

The growing tight supply of fluorite resources forced the tycoons in fluorine chemical industry, including Arkema, Stella, Morita, Daikin Industries and INEOS, to transfer the production of hydrofluoric acid to China, established their plants there successively. As of the end of 2009, there were over 60 hydrofluoric acid manufacturers (all state-run enterprises and non-state enterprises with an annual sales income of more than RMB5 million) in China, with the total capacity of around 1.22 million tons. However, due to the weakened demand in the downstream, the hydrofluoric acid output of China was just 600,000 tons or so in 2009, with an operating rate of 50%.


China limits the building of new projects with hydrogen fluoride production equipment (excluding corollary equipment for own use and electronic high-purity hydrogen fluoride equipment) with single set yielding below 10,000 s/year. Out of consideration for scale economy, there has over 75% of hydrofluoric acid manufacturers in China with the annual capacity surpassing 10,000 tons. With the developing technology and weakening industrial entry barriers, the industrial concentration will become much lower in the wake of the increasing entrants in this field. In 2009, Zhejiang YingPeng Group, the largest hydrofluoric acid manufacturer in China, contributed to 11.1% capacity of the total, followed by Shandong Dong Yue Group, Fujian Shaowu Yongfei Chemical Industry Co., Ltd and Zhejiang Sanmei Chemical Industry Co., Ltd with the capacity percentage of 6.6%, 4.2% and 4.1% respectively. And the figures of other enterprises in the industry were all below 4%.

In addition, the electronic-grade hydrofluoric acid of China is limited in terms of both capacity and output by reason of technical barriers. Since 2009, two 1,000-ton-above projects have been put into production successively in China, referring to 6,000 tons/year electronic-grade hydrofluoric acid project of Zhejiang Kaiheng Electronic Materials Co., Ltd and 3,000 tons/year electronic-grade hydrofluoric acid project of Fujian Shaowu Yongfei Chemical Industry Ltd. However, the recovery of electronic industry worldwide stimulated the growing demand for electronic- grade hydrofluoric acid. Thus far, China’s hydrofluoric acid capacity has yet failed to satisfy the domestic market. As of the first half of 2010, the capacity of electronic-grade hydrofluoric acid in China only provided 1.1% of the total roughly. Therefore, China has to meet the domestic demand for hydrofluoric acid through imports.