CN102826513A - Production process of hydrofluoric acid - Google Patents
Production process of hydrofluoric acid Download PDFInfo
- Publication number
- CN102826513A CN102826513A CN2012103206007A CN201210320600A CN102826513A CN 102826513 A CN102826513 A CN 102826513A CN 2012103206007 A CN2012103206007 A CN 2012103206007A CN 201210320600 A CN201210320600 A CN 201210320600A CN 102826513 A CN102826513 A CN 102826513A
- Authority
- CN
- China
- Prior art keywords
- hydrofluoric acid
- calcium fluoride
- production process
- fluoride
- fluorspan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 18
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000001117 sulphuric acid Substances 0.000 claims abstract description 6
- 235000011149 sulphuric acid Nutrition 0.000 claims abstract description 6
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims abstract description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000002351 wastewater Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 239000011698 potassium fluoride Substances 0.000 abstract 1
- 235000003270 potassium fluoride Nutrition 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a production process of hydrofluoric acid. The production process comprises the following steps of: taking industrial sulphuric acid, calcium fluoride and water as raw materials, wherein the ratio of the calcium fluoride to the sulphuric acid is 1:1.25; adding the calcium fluoride into a converter through a charging hole and conveying the calcium fluoride to a mixing bin; adding the sulphuric acid into the mixing bin, and conveying mixed materials into a converter barrel; heating up to a temperature of 600 DEG C by using open fire; inducing hydrogen fluoride gas obtained by reacting to an absorption tower to be absorbed by an induced draft fan to obtain a hydrofluoric acid product; and absorbing a small quantity of tail gas by using a potassium hydroxide solution, wherein waste water is applied mechanically in potassium fluoride production process. The production process of the hydrofluoric acid has the advantages of simple technology, low production cost, good social, economic and environmentally friendly benefits and easiness of popularization and application.
Description
Technical field
The present invention relates to a kind of production technique of hydrofluoric acid, belong to chemical technology field.
Background technology
Because the ability of hydrofluoric acid dissolution oxide compound, it plays an important role in the purification of aluminium and uranium.Hydrofluoric acid also is used for etching glass, can depiction, mark scale and literal; Semi-conductor industry uses it to remove the oxide compound of silicon face, and it can be as the catalyzer of the alkylated reaction of Trimethylmethane and butane in refinery, removes in " pickling " process of oxygenate impurity of stainless steel surface and also can use hydrofluoric acid.Hydrofluoric acid also is used for the synthetic of multiple organic fluorocompound, also has the cooling agent of one type of freonll-11 such as Teflon (tetrafluoroethylene).Therefore the hydrofluoric acid demand is very big, and existing manufacturing technique exists the weak point that production cost is big, the environmental protection cost is high.
Summary of the invention
The objective of the invention is to overcome the weak point of prior art, a kind of production technique of hydrofluoric acid is provided.
The production technique of hydrofluoric acid of the present invention comprises the steps: that with industrial sulphuric acid, Calcium Fluoride (Fluorspan) and water be raw material, and wherein Calcium Fluoride (Fluorspan) and sulfuric acid proportioning are 1:1.25; Calcium Fluoride (Fluorspan) is added in the converter through charging opening, is transported to blending bunker, in blending bunker, add sulfuric acid; The material that mixes is transported in the stove tube; Be heated to 600 degrees centigrade with naked light, the hydrogen fluoride gas that reaction obtains is drawn out to the absorption tower by induced draft fan and absorbs, and obtains the hydrofluoric acid product; A small amount of tail gas absorbs with potassium hydroxide solution, and waste water is applied mechanically in the Potassium monofluoride production process.
The production technique of hydrofluoric acid of the present invention has following technique effect: technology is simple, production cost is low, has good society, economy and environmental benefit, is easy to apply.
Embodiment
Embodiment 1
The production technique of the hydrofluoric acid of present embodiment comprises the steps: that with industrial sulphuric acid, Calcium Fluoride (Fluorspan) and water be raw material, and wherein Calcium Fluoride (Fluorspan) and sulfuric acid proportioning are 1:1.25; Calcium Fluoride (Fluorspan) is added in the converter through charging opening, is transported to blending bunker, in blending bunker, add sulfuric acid; The material that mixes is transported in the stove tube; Be heated to 600 degrees centigrade with naked light, the hydrogen fluoride gas that reaction obtains is drawn out to the absorption tower by induced draft fan and absorbs, and obtains the hydrofluoric acid product; A small amount of tail gas absorbs with potassium hydroxide solution, and waste water is applied mechanically in the Potassium monofluoride production process.
Claims (1)
1. the production technique of a hydrofluoric acid is characterized in that, comprises the steps: that with industrial sulphuric acid, Calcium Fluoride (Fluorspan) and water be raw material; Wherein Calcium Fluoride (Fluorspan) and sulfuric acid proportioning are 1:1.25, and Calcium Fluoride (Fluorspan) is added in the converter through charging opening, are transported to blending bunker; In blending bunker, add sulfuric acid, the material that mixes is transported in the stove tube, is heated to 600 degrees centigrade with naked light; The hydrogen fluoride gas that reaction obtains is drawn out to the absorption tower by induced draft fan and absorbs; Obtain the hydrofluoric acid product, a small amount of tail gas absorbs with potassium hydroxide solution, and waste water is applied mechanically in the Potassium monofluoride production process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103206007A CN102826513A (en) | 2012-09-03 | 2012-09-03 | Production process of hydrofluoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103206007A CN102826513A (en) | 2012-09-03 | 2012-09-03 | Production process of hydrofluoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102826513A true CN102826513A (en) | 2012-12-19 |
Family
ID=47329864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103206007A Pending CN102826513A (en) | 2012-09-03 | 2012-09-03 | Production process of hydrofluoric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102826513A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177867A (en) * | 2014-09-15 | 2014-12-03 | 安徽工业大学 | A modification method of nano-SiO2 |
| CN108609586A (en) * | 2018-08-08 | 2018-10-02 | 宣城亨泰电子化学材料有限公司 | A kind of reagent stage hydrofluoric acid producing device |
| CN110498430A (en) * | 2019-10-08 | 2019-11-26 | 内蒙古星汉氟都化工有限公司 | A method of potassium fluoride is produced by raw material of Fluorspar Powder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104494A (en) * | 1984-05-18 | 1986-12-10 | 阿托化学公司 | Sulfuric acid and fluorite are produced the method for hydrofluoric acid at the rotary oven internal reaction |
| CN101913565A (en) * | 2010-08-12 | 2010-12-15 | 衢州市鼎盛化工科技有限公司 | Method for preparing hydrogen fluoride from flousper powder and sulfuric acid |
| CN102026912A (en) * | 2008-04-22 | 2011-04-20 | 苏威氟有限公司 | Preparation of hydrogen fluoride from fluorspar or calcium fluoride containing waste material |
| CN102502502A (en) * | 2011-11-08 | 2012-06-20 | 湖南有色郴州氟化学有限公司 | Method for preparing hydrogen fluoride gas from 98% sulphuric acid |
| CN102556973A (en) * | 2012-02-22 | 2012-07-11 | 中南大学 | Method for producing hydrofluoric acid from fluorite as raw material |
-
2012
- 2012-09-03 CN CN2012103206007A patent/CN102826513A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104494A (en) * | 1984-05-18 | 1986-12-10 | 阿托化学公司 | Sulfuric acid and fluorite are produced the method for hydrofluoric acid at the rotary oven internal reaction |
| CN102026912A (en) * | 2008-04-22 | 2011-04-20 | 苏威氟有限公司 | Preparation of hydrogen fluoride from fluorspar or calcium fluoride containing waste material |
| CN101913565A (en) * | 2010-08-12 | 2010-12-15 | 衢州市鼎盛化工科技有限公司 | Method for preparing hydrogen fluoride from flousper powder and sulfuric acid |
| CN102502502A (en) * | 2011-11-08 | 2012-06-20 | 湖南有色郴州氟化学有限公司 | Method for preparing hydrogen fluoride gas from 98% sulphuric acid |
| CN102556973A (en) * | 2012-02-22 | 2012-07-11 | 中南大学 | Method for producing hydrofluoric acid from fluorite as raw material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177867A (en) * | 2014-09-15 | 2014-12-03 | 安徽工业大学 | A modification method of nano-SiO2 |
| CN104177867B (en) * | 2014-09-15 | 2015-09-23 | 安徽工业大学 | A modification method of nano-SiO2 |
| CN108609586A (en) * | 2018-08-08 | 2018-10-02 | 宣城亨泰电子化学材料有限公司 | A kind of reagent stage hydrofluoric acid producing device |
| CN108609586B (en) * | 2018-08-08 | 2021-11-02 | 宣城亨泰电子化学材料有限公司 | Reagent-grade hydrofluoric acid manufacturing device |
| CN110498430A (en) * | 2019-10-08 | 2019-11-26 | 内蒙古星汉氟都化工有限公司 | A method of potassium fluoride is produced by raw material of Fluorspar Powder |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121219 |