CN105800752A - Treatment method of high-concentration hydrofluoric acid - Google Patents
Treatment method of high-concentration hydrofluoric acid Download PDFInfo
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- CN105800752A CN105800752A CN201610135854.XA CN201610135854A CN105800752A CN 105800752 A CN105800752 A CN 105800752A CN 201610135854 A CN201610135854 A CN 201610135854A CN 105800752 A CN105800752 A CN 105800752A
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- Prior art keywords
- hydrofluoric acid
- carrier
- water
- high concentration
- solid
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/22—Fluorides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to a treatment method of a high-concentration hydrofluoric acid. The method comprises the following four steps: injecting a reaction carrier; purifying the high-concentration hydrofluoric acid; carrying out solid-liquid separation, recycling the product and the like. The technology is simple; the control performance is good; on the one hand, the purifying efficiency of high-concentration hydrofluoric acid waste and the comprehensive recovery utilization ratio of resources can be effectively improved; on the other hand, the harm of the high-concentration hydrofluoric acid waste to an operator and equipment can be effectively avoided; the safety of the purifying operation is improved; the service lifetime of the equipment is prolonged; and meanwhile, the pipe blockage phenomenon which is easily caused in a traditional high-concentration hydrofluoric acid waste treatment process can be effectively overcome, so that the purifying operation efficiency and the safety of the high-concentration hydrofluoric acid waste are greatly improved; and the treatment cost is effectively reduced.
Description
Technical field
The present invention relates to a kind of high concentration of hydrofluoric acid processing method, belong to fluohydric acid gas purification treatment technology field.
Background technology
Fluohydric acid. (HF) is the aqueous solution of hydrogen fluoride gas, colourless, irritant abnormal smells from the patient.There is strong corrosivity.It is dissolved in water with fluohydric acid gas and obtains.It also can be used to thinning, etching glass, removes the oxide of silicon face, is main industrial chemicals in photovoltaic, solar energy industry processing procedure；Fluohydric acid. is after thinning, having etched, and containing other pollutant, is not suitable for producing reuse, thus environment easily causes serious pollution, and production equipment and personal security is constituted a threat to, for this problem, is currently mostly employing Ca (OH)2As flocculant, high concentration fluohydric acid gas pollutant are carried out purified treatment, although can effectively by fluohydric acid gas pollutant purification, but in decontamination process, substantial amounts of heat and solid deposits can be produced, thus causing that on the one hand the purification apparatus phenomenon that suffers erosion is serious, thus causing cleaning equipment shorter for service life, substantial amounts of solid deposits easily causes the pipeline blockage of cleaning system on the other hand, have a strong impact on and purify carrying out smoothly of operation, and it is easily caused the generation of pollutant leakage phenomenon, serious threat fluohydric acid gas pollutant purification processes work efficiency and the safety of operation.
Summary of the invention
The object of the invention is that and overcomes above-mentioned deficiency, it is provided that a kind of high concentration of hydrofluoric acid processing method.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of high concentration of hydrofluoric acid processing method, it is characterised in that: described high concentration of hydrofluoric acid processing method comprises the following steps:
The first step, injects reaction carriers, the capacity according to Fluohydric acid. garbage purification apparatus, injects water as purified treatment carrier is carrier, keep constant level in purified treatment reaction chamber；
Second step, high concentration of hydrofluoric acid purifies, after completing the first step, high concentration of hydrofluoric acid garbage is incorporated in the reaction chamber of Fluohydric acid. garbage purification apparatus by mode of jet, and the flow according to high concentration of hydrofluoric acid garbage adds entrance Ca (OH) in proportion simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus2Reactant, and make high concentration of hydrofluoric acid garbage and Ca (OH)2Reactant is sufficiently mixed with as the water processing carrier is carrier and reacts, the CaF that will produce after reaction2Solid deposits, moisture content and the mixed liquor constituted as the water processing carrier is carrier pass through Pipeline transport to solid-liquid separating equipment place, the heat produced time simultaneously by reaction is reclaimed by heat exchanger, and in the process, in the reaction chamber of Fluohydric acid. garbage purification apparatus, add water simultaneously keep the constant level of purified treatment carrier is carrier；
3rd step, solid-liquid separation, the mixed liquor obtained through second step is passed through equipment for separating liquid from solid place, CaF2 solid deposits in mixed liquor and water body are easily separated, and the F-ion concentration in the water body after separating and water PH value are detected, and the F-ion concentration in water body and water PH value are regulated to achievement level by medicament；
4th step, recycle, the CaF2 solid deposits obtained after the 3rd step solid-liquid separation is individually deposited, the water body obtained after solid-liquid separation is added to as purified treatment carrier is carrier by circulation line simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus again with.
Further, in the described first step, water water level is the 1/4 1/2 of purified treatment reaction chamber dischargeable capacity height.
Further, in described second step mixed liquor be incorporated in solid-liquid separating equipment in the duct flow velocity be not less than 3 meter per seconds, temperature is not more than 30 DEG C.
Present invention process is simple, handling is good, can effectively improve the purification working performance of high concentration of hydrofluoric acid garbage on the one hand, resource comprehensive utilization utilization rate, can effectively avoid the harm that operator's human body and equipment are caused by high concentration of hydrofluoric acid garbage on the other hand, purify the safety of operation and the service life of equipment, also can effectively overcome the line clogging phenomenon of easily outlet in tradition Fluohydric acid. offal treatment process simultaneously, thus greatly improving purified treatment working performance and the safety of high concentration of hydrofluoric acid garbage, and effectively reduce processing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Embodiment 1
A kind of high concentration of hydrofluoric acid processing method as shown in Figure 1, it is characterised in that: described high concentration of hydrofluoric acid processing method comprises the following steps:
The first step, injects reaction carriers, the capacity according to Fluohydric acid. garbage purification apparatus, injects water as purified treatment carrier is carrier, and water level is concordant with 1/3 position of purified treatment reaction chamber height in purified treatment reaction chamber.
Second step, high concentration of hydrofluoric acid purifies, after completing the first step, high concentration of hydrofluoric acid garbage is incorporated in the reaction chamber of Fluohydric acid. garbage purification apparatus by mode of jet, flow velocity is 5m/s, and the flow according to high concentration of hydrofluoric acid garbage adds entrance Ca (OH) in proportion simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus2Reactant, and make high concentration of hydrofluoric acid garbage and Ca (OH)2Reactant is sufficiently mixed with as the water processing carrier is carrier and reacts, the CaF that will produce after reaction2Solid deposits, moisture content and the mixed liquor constituted as the water processing carrier is carrier pass through Pipeline transport to solid-liquid separating equipment place, and mixed liquor flow velocity is 3m/s, temperature is 25 DEG C, the heat produced time simultaneously by reaction is reclaimed by heat exchanger, and in the process, in the reaction chamber of Fluohydric acid. garbage purification apparatus, add water simultaneously keep the constant level of purified treatment carrier is carrier；
3rd step, solid-liquid separation, the mixed liquor obtained through second step is passed through equipment for separating liquid from solid place, CaF2 solid deposits in mixed liquor and water body are easily separated, and the F-ion concentration in the water body after separating and water PH value are detected, and the F-ion concentration in water body and water PH value are regulated to achievement level by medicament；
4th step, recycle, the CaF2 solid deposits obtained after the 3rd step solid-liquid separation is individually deposited, the water body obtained after solid-liquid separation is added to as purified treatment carrier is carrier by circulation line simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus again with.
Embodiment 2
A kind of high concentration of hydrofluoric acid processing method as shown in Figure 1, it is characterised in that: described high concentration of hydrofluoric acid processing method comprises the following steps:
The first step, injects reaction carriers, the capacity according to Fluohydric acid. garbage purification apparatus, injects water as purified treatment carrier is carrier, and water level is concordant with 1/2 position of purified treatment reaction chamber height in purified treatment reaction chamber.
Second step, high concentration of hydrofluoric acid purifies, after completing the first step, high concentration of hydrofluoric acid garbage is incorporated in the reaction chamber of Fluohydric acid. garbage purification apparatus by mode of jet, flow velocity is 10m/s, and the flow according to high concentration of hydrofluoric acid garbage adds entrance Ca (OH) in proportion simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus2Reactant, and make high concentration of hydrofluoric acid garbage and Ca (OH)2Reactant is sufficiently mixed with as the water processing carrier is carrier and reacts, the CaF that will produce after reaction2Solid deposits, moisture content and the mixed liquor constituted as the water processing carrier is carrier pass through Pipeline transport to solid-liquid separating equipment place, and mixed liquor flow velocity is 5m/s, temperature is 30 DEG C, the heat produced time simultaneously by reaction is reclaimed by heat exchanger, and in the process, in the reaction chamber of Fluohydric acid. garbage purification apparatus, add water simultaneously keep the constant level of purified treatment carrier is carrier；
3rd step, solid-liquid separation, the mixed liquor obtained through second step is passed through equipment for separating liquid from solid place, CaF2 solid deposits in mixed liquor and water body are easily separated, and the F-ion concentration in the water body after separating and water PH value are detected, and the F-ion concentration in water body and water PH value are regulated to achievement level by medicament；
4th step, recycle, the CaF2 solid deposits obtained after the 3rd step solid-liquid separation is individually deposited, the water body obtained after solid-liquid separation is added to as purified treatment carrier is carrier by circulation line simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus again with.
Present invention process is simple, handling is good, can effectively improve the purification working performance of high concentration of hydrofluoric acid garbage on the one hand, resource comprehensive utilization utilization rate, can effectively avoid the harm that operator's human body and equipment are caused by high concentration of hydrofluoric acid garbage on the other hand, purify the safety of operation and the service life of equipment, also can effectively overcome the line clogging phenomenon of easily outlet in tradition Fluohydric acid. offal treatment process simultaneously, thus greatly improving purified treatment working performance and the safety of high concentration of hydrofluoric acid garbage, and effectively reduce processing cost.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (3)
1. a high concentration of hydrofluoric acid processing method, it is characterised in that: described high concentration of hydrofluoric acid processing method comprises the following steps:
The first step, injects reaction carriers, the capacity according to Fluohydric acid. garbage purification apparatus, injects water as purified treatment carrier is carrier, keep constant level in purified treatment reaction chamber；
Second step, high concentration of hydrofluoric acid purifies, after completing the first step, high concentration of hydrofluoric acid garbage is incorporated in the reaction chamber of Fluohydric acid. garbage purification apparatus by mode of jet, and the flow according to high concentration of hydrofluoric acid garbage adds entrance Ca (OH) in proportion simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus2Reactant, and make high concentration of hydrofluoric acid garbage and Ca (OH)2Reactant is sufficiently mixed with as the water processing carrier is carrier and reacts, the CaF that will produce after reaction2Solid deposits, moisture content and the mixed liquor constituted as the water processing carrier is carrier pass through Pipeline transport to solid-liquid separating equipment place, the heat produced time simultaneously by reaction is reclaimed by heat exchanger, and in the process, in the reaction chamber of Fluohydric acid. garbage purification apparatus, add water simultaneously keep the constant level of purified treatment carrier is carrier；
3rd step, solid-liquid separation, the mixed liquor obtained through second step is passed through equipment for separating liquid from solid place, CaF2 solid deposits in mixed liquor and water body are easily separated, and the F-ion concentration in the water body after separating and water PH value are detected, and the F-ion concentration in water body and water PH value are regulated to achievement level by medicament；
4th step, recycle, the CaF2 solid deposits obtained after the 3rd step solid-liquid separation is individually deposited, the water body obtained after solid-liquid separation is added to as purified treatment carrier is carrier by circulation line simultaneously in the reaction chamber of Fluohydric acid. garbage purification apparatus again with.
2. a kind of high concentration of hydrofluoric acid processing method according to claim 1, it is characterised in that: in the described first step, water water level is the 1/4 1/2 of purified treatment reaction chamber dischargeable capacity height.
3. a kind of high concentration of hydrofluoric acid processing method according to claim 1, it is characterised in that: in described second step mixed liquor be incorporated in solid-liquid separating equipment in the duct flow velocity be not less than 3 meter per seconds, temperature is not more than 30 DEG C.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135854.XA CN105800752A (en) | 2016-03-10 | 2016-03-10 | Treatment method of high-concentration hydrofluoric acid |
| TW106104523A TW201731772A (en) | 2016-03-10 | 2017-02-10 | Method for treating high concentration of hydrofluoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135854.XA CN105800752A (en) | 2016-03-10 | 2016-03-10 | Treatment method of high-concentration hydrofluoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105800752A true CN105800752A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610135854.XA Pending CN105800752A (en) | 2016-03-10 | 2016-03-10 | Treatment method of high-concentration hydrofluoric acid |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105800752A (en) |
| TW (1) | TW201731772A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362475A (en) * | 2020-06-01 | 2020-07-03 | 湖南大青生态科技有限公司 | High concentration fluorine chlorine waste water resourceful treatment device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439898A (en) * | 2007-09-21 | 2009-05-27 | 三洋电机株式会社 | Hydrofluoric acid treatment apparatus |
| CN101565227A (en) * | 2008-04-23 | 2009-10-28 | 力晶半导体股份有限公司 | Treatment method of fluorin-contained wastewater and wastewater treatment system |
| CN202072566U (en) * | 2011-05-18 | 2011-12-14 | 无锡市新都环保设备有限公司 | Treatment system for waste water containing high-concentration hydrofluoric acid |
-
2016
- 2016-03-10 CN CN201610135854.XA patent/CN105800752A/en active Pending
-
2017
- 2017-02-10 TW TW106104523A patent/TW201731772A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439898A (en) * | 2007-09-21 | 2009-05-27 | 三洋电机株式会社 | Hydrofluoric acid treatment apparatus |
| CN101565227A (en) * | 2008-04-23 | 2009-10-28 | 力晶半导体股份有限公司 | Treatment method of fluorin-contained wastewater and wastewater treatment system |
| CN202072566U (en) * | 2011-05-18 | 2011-12-14 | 无锡市新都环保设备有限公司 | Treatment system for waste water containing high-concentration hydrofluoric acid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362475A (en) * | 2020-06-01 | 2020-07-03 | 湖南大青生态科技有限公司 | High concentration fluorine chlorine waste water resourceful treatment device |
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| Publication number | Publication date |
|---|---|
| TW201731772A (en) | 2017-09-16 |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160727 |