Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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1. Purpose 

According to the production task AHF prepared into electronic-grade hydrofluoric acid, and canned to special containers. 

2. Scope of application:

It is suitable for the operation of electronic grade hydrofluoric acid production. 

3. Responsibilities

Manufacturing Department: Responsible for the reaction AHF chemical reaction from the hengyuan acid tank, and through the rectification made after the qualified AHF, according to the proportion of ultra-pure water after treatment, made of qualified electronic-grade hydrofluoric acid, to help canned Personnel will enter the finished product storage tank.

4. Drive product indicators and control indicators:

Ultra-pure water acid index: HF(hydrofluoric acid)% = 49.0% ± 0.5%

Feed amount: 300 kg /h

B. Distillation column pressure: 42 ± 4KPa

C. Distillation tower temperature: 40 ± 3 ℃

D. Distillation column pressure: 42 ± 4KPa

E. Temperature in the distillation column: 35 ± 3 ℃

F. Distillation column top pressure: 40 ± 4KPa

G. Distillation column top temperature: 35 ± 3 °C

H. Cold water temperature: 7-10 ℃

I. Cooling water flow rate: 100m3/h

J. Dilution tank temperature: ≤50 ℃

K. Mixer AHF Flow: 269.5 kg /h (reference)

L Pure water flow into the mixer: 280.5kg /h (reference)

M. Hot water temperature: 60-70 ℃

Distillation column residual acid emissions: every 2 hours 40 kg