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ZIP:324000
TEL:+86-570-3865703
FAX:+86-570-3865781
SITE:www.dshtech.cn
E_MAIL:dshchem@aliyun.com
ADD:NO.75 ,Fushi Road,Quzhou City,Zhejiang Province,China

   
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The introduction of know-how and processing technology

of annual output 25,000 tons of Anhydrous Hhydrogen Fluoride (AHF)

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1.  Date of AHF

1.1  Name: Anhydrous hydrogen fluoride; Hydrofluoric; AHF 

1.2  Molecular formula: HF

1.3  Molecular Weight: 20.01

1.4  Physicochemical property: it is colorless transparent liquid in low temperature, boiling point 19.54, melting point -83.37, density 1.13g/cm3(25). It is volatile into smog in room temperature and normal temperature. The chemical property is very active. It can react with alkali, metal, oxide and silicate etc. Under certain conditions, it can be freely mixed with water into hydrofluoric acid. Has a strong pungent smell, it has a strong corrosive effect on eyes, ears, nose, and throat mucosa, serious corrosive effect and as well make calcification on the person's teeth and bones. The max allowed consistency in the air is 1mg钱柜999登录queous solution is high corrosive. Severe toxicity.

钱柜999登录AHF is widely used in atomic energy, chemical, petroleum and other industries. It is a strong oxidant. It is the basic raw material of a variety of fluorine refrigerant, inorganic fluoride and all kinds of organic fluoride. It also can be confected into various uses of hydrofluoric acid with water. It is used in making graphite and catalyst in making organic compounds, glass etching agent etc..

2.  Technology and process

2.1  Technical Principle

Calcium fluoride react with sulphuric acid makes hydrogen fluoride and calcium sulphate

CaF2 + H2SO4  →  2HF + CaSO4

2.2  The process diagram at attached

 

3.  Requirement on raw materials

3.1  Calcium fluoride: CaF297%CaCO31.0%SiO21.5%

3.2  98% sulphuric acid: industrial grade

3.3  105% Oleum: industrial grade

3.4  Lime: industrial grade

 

 

4. Consumption of Raw Material and Utility for 1 mt AHF Production

4.1 Raw material consumption

Raw Material

Guaranteed

H2SO4 and Oleum, (calculated as 100% H2SO4)

2,590kg

Calcium fluoride, (CaF2≥ 97%, dry)

(CaCO3 and SiO2 max.1% each)

2,160kg

Lime, CaO.

30kg

4.2 Utility consumption

Electrical energy

approx.260 kWh

Steam (6 bar)

approx.400 kg

Cooling water (32°C)

approx.30 m3

Process water (20°C)     

approx.1 m3

Coal Gas,

approx.4.5×106 kJ

Refrigeration Energy (-10°C)    

approx.1.7×106 kJ

 

5.  The advantages of Dingsheng Company proprietary technology

5.1  The most advanced technology in the world.

5.2  Compared with other processes, it reduce 10% on energy and raw materials consumption

5.3  High quality of Hydrofluoric, HF99.95%

5.4  Automation control system by DCS.

5.5  Clean production, no polluted

6.  Dingsheng company provides design and services as following

6.1   The basic design of P&ID

6.2   The basic design of all non-standard equipments

6.3   Material balance Diagram and Energy balances Diagram

6.4   Condition list of electrical and instrument

6.5   General equipment selection

6.6   General Plan Design

6.7   Basic information for construction, Fire, safety, environmental protection, etc.

6.8   Process Manuals.

6.9   Commissioning assistance at plant site and staffs training on this technology.

 

 

 

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TEL:+86-570-3865782  SITE:www.dshtech.cn ADD:NO.75 ,Fushi Road,Quzhou City,Zhejiang Province,China
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