CN112547663A - Silicon edge leather cleaning process - Google Patents
Silicon edge leather cleaning process Download PDFInfo
- Publication number
- CN112547663A CN112547663A CN202011330091.7A CN202011330091A CN112547663A CN 112547663 A CN112547663 A CN 112547663A CN 202011330091 A CN202011330091 A CN 202011330091A CN 112547663 A CN112547663 A CN 112547663A
- Authority
- CN
- China
- Prior art keywords
- silicon edge
- acid
- silicon
- edge leather
- leather material
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
Abstract
The invention relates to a silicon edge leather cleaning process, which firstly starts an acid cleaning procedure: dissolving mixed acid in water to form acid liquor, wherein the mixed acid comprises strong acid and weak acid, and placing the silicon edge leather material in the acid liquor for soaking for a certain time; and (3) carrying out a water washing procedure on the silicon edge leather: placing the silicon edge skin material in a water washing tank, then spraying the silicon edge skin material by using a pump through a water pipe and a spray head, and cleaning the silicon edge skin material by using ultrasonic waves in the process; putting the silicon edge leather material into a water tank, and rinsing the silicon edge leather material; further carrying out water bath treatment on the silicon edge leather material; finally, vacuumizing the silicon edge leather material after water bath: and placing the silicon edge leather material subjected to water bath in a vacuum box, vacuumizing the vacuum box to enable the silicon edge leather material to be in a vacuum environment, and taking away the silicon edge leather material after vacuumizing. The invention provides a silicon edge leather cleaning process, which reduces the pollution to the environment by using weak acid, improves the working efficiency and saves the production cost.
Description
Technical Field
The invention relates to the field of silicon material cleaning, in particular to a silicon edge leather cleaning process.
Background
Silicon is a non-metallic element and is a main raw material of a semiconductor material, a solar cell and an LED lamp; can also be used for manufacturing semiconductor devices and integrated circuits; has wide application in industrial production.
In the process of producing the silicon material, the silicon rod or the silicon ingot is cut to be square, and the leftover is called as a flaw-piece material; the silicon material can be recycled, so the cut off offcut leather material needs to be recovered; the cutting fluid, metal ions, fingerprints, incidental impurities and other dirt are remained on the surface of the boundary leather material in the processing process, so that the boundary leather material must be cleaned, the traditional boundary leather material cleaning process adopts strong acid to clean the polluted environment, and the old cleaning process has low working efficiency.
Disclosure of Invention
The purpose of the invention is: provides a silicon edge leather cleaning process, and solves the problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a silicon edge leather cleaning process comprises the following process steps:
s1, first, the pickling process is started: dissolving mixed acid in water to form acid liquor, wherein the mixed acid comprises strong acid and weak acid, and placing the silicon edge leather material in the acid liquor for soaking for a certain time;
s2, washing the silicon edge leather: placing the silicon edge skin material in a water washing tank, then spraying the silicon edge skin material by using a pump through a water pipe and a spray head, and cleaning the silicon edge skin material by using ultrasonic waves in the process;
s3, putting the silicon edge leather material into a water tank, and rinsing the silicon edge leather material;
s4, further carrying out water bath treatment on the silicon edge leather material;
s5, finally, vacuumizing the silicon edge leather material after water bath: and placing the silicon edge leather material subjected to water bath in a vacuum box, vacuumizing the vacuum box to enable the silicon edge leather material to be in a vacuum environment, and taking away the silicon edge leather material after vacuumizing.
Furthermore, the content of the mixed acid in the acid liquid formed by adding water to the mixed acid is 1% -50%, the strong acid is hydrofluoric acid, and the weak acid is citric acid.
Furthermore, the content of the mixed acid in the acid liquid formed by adding water to the mixed acid accounts for 10% -50%, and the hydrofluoric acid and the citric acid are mixed according to a certain proportion.
Further, the hydrofluoric acid and the citric acid are mixed according to the ratio of 1:99, and the silicon edge leather is pickled at normal temperature after the hydrofluoric acid and the citric acid are mixed.
Furthermore, a plurality of water tanks are needed during washing, and an industrial pump is used as spraying power during washing.
Further, the water tank for washing is used in turn, and the industrial pump comprises a chemical pump, a pulse pump, a magnetic pump and a pneumatic diaphragm pump.
Further, the silicon edge leather after the water bath is placed in a plurality of vacuum boxes for vacuumizing.
Further, a plurality of the vacuum boxes are connected in parallel or in series.
The invention has the beneficial effects that: the silicon edge leather material cleaning process has the advantages that the silicon edge leather material is quickly cleaned through the steps of phase acid cleaning, water cleaning, rinsing, water bath, vacuumizing and the like, the pollution to the environment is reduced by weak acid, the working efficiency is improved, and the production cost is saved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A silicon edge leather cleaning process comprises the following process steps:
s1, first, the pickling process is started: dissolving mixed acid in water to form acid liquor, wherein the mixed acid comprises strong acid and weak acid, and placing the silicon edge leather material in the acid liquor for soaking for a certain time for pickling the edge leather material;
s2, washing the silicon edge leather: placing the silicon edge leather material in a water washing tank, then spraying the silicon edge leather material through a water pipe and a spray head by using a pump for washing weak acid and residues after acid washing, cleaning the silicon edge leather material by using ultrasonic waves in the process, and shaking off solid residues on the edge leather material by using the ultrasonic waves to keep the solid residues in the water tank;
s3, putting the silicon edge leather material into a water tank, and rinsing the silicon edge leather material for washing away residues;
s4, further carrying out water bath treatment on the silicon edge skin material, and heating the silicon edge skin material to evaporate water on the surface of the silicon edge skin material;
s5, finally, vacuumizing the silicon edge leather material after water bath: the silicon edge skin material after the water bath is placed in the vacuum box, the vacuum box is vacuumized to enable the silicon edge skin material to be in a vacuum environment, evaporated water vapor and other gases are pumped away to achieve the purpose of obtaining clean silicon, and the silicon edge skin material is taken away after the vacuumizing is finished, so that clean silicon is obtained.
The content of the mixed acid in the acid liquid formed by adding water to the mixed acid is 1% -50%, the strong acid is hydrofluoric acid, and the weak acid is citric acid, so that the optimal cleaning effect is achieved.
The content of the mixed acid in the acid liquid formed by adding water to the mixed acid is 10% -50%, and the hydrofluoric acid and the citric acid are mixed according to a certain proportion.
And mixing the hydrofluoric acid and the citric acid according to the proportion of 1:99, and pickling the silicon edge leather material at normal temperature after mixing the hydrofluoric acid and the citric acid.
Need a plurality of water tanks during washing for ensure that the effect of washing meets the requirements, use the industrial pump to act as the power that sprays during washing, be used for increasing the efficiency and the thorough degree of washing.
The water tank for washing is used in sequence, and the industrial pump comprises a chemical pump, a pulse pump, a magnetic pump and a pneumatic diaphragm pump.
And the silicon edge leather after the water bath is placed in a plurality of vacuum boxes for vacuumizing, so that the thoroughness of the vacuumizing process is ensured.
The vacuum boxes are connected in parallel or in series and are used for increasing the vacuum pumping efficiency.
The above examples are intended to further illustrate the present invention, but are not intended to limit the invention to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.
Claims (8)
1. A silicon edge leather cleaning process is characterized by comprising the following steps: the process comprises the following steps:
s1, first, the pickling process is started: dissolving mixed acid in water to form acid liquor, wherein the mixed acid comprises strong acid and weak acid, and placing the silicon edge leather material in the acid liquor for soaking for a certain time;
s2, washing the silicon edge leather: placing the silicon edge skin material in a water washing tank, then spraying the silicon edge skin material by using a pump through a water pipe and a spray head, and cleaning the silicon edge skin material by using ultrasonic waves in the process;
s3, putting the silicon edge leather material into a water tank, and rinsing the silicon edge leather material;
s4, further carrying out water bath treatment on the silicon edge leather material;
s5, finally, vacuumizing the silicon edge leather material after water bath: and placing the silicon edge leather material subjected to water bath in a vacuum box, vacuumizing the vacuum box to enable the silicon edge leather material to be in a vacuum environment, and taking away the silicon edge leather material after vacuumizing.
2. The silicon edge trim cleaning process according to claim 1, characterized in that: the content of the mixed acid in the acid liquid formed by adding water to the mixed acid is 1% -50%, the strong acid is hydrofluoric acid, and the weak acid is citric acid.
3. The silicon edge trim cleaning process according to claim 2, characterized in that: the content of the mixed acid in the acid liquid formed by adding water to the mixed acid is 10% -50%, and the hydrofluoric acid and the citric acid are mixed according to a certain proportion.
4. The silicon edge trim cleaning process according to claim 3, characterized in that: and mixing the hydrofluoric acid and the citric acid according to the proportion of 1:99, and pickling the silicon edge leather material at normal temperature after mixing the hydrofluoric acid and the citric acid.
5. The silicon edge trim cleaning process according to claim 1, characterized in that: a plurality of water tanks are needed during washing, and an industrial pump is used as spraying power during washing.
6. The silicon edge trim cleaning process according to claim 5, characterized in that: the water tank for washing is used in sequence, and the industrial pump comprises a chemical pump, a pulse pump, a magnetic pump and a pneumatic diaphragm pump.
7. The silicon edge trim cleaning process according to claim 1, characterized in that: and the silicon edge leather after the water bath is placed in a plurality of vacuum boxes for vacuumizing.
8. The silicon edge trim cleaning process according to claim 7, characterized in that: the vacuum boxes are connected in parallel or in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330091.7A CN112547663A (en) | 2020-11-24 | 2020-11-24 | Silicon edge leather cleaning process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330091.7A CN112547663A (en) | 2020-11-24 | 2020-11-24 | Silicon edge leather cleaning process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112547663A true CN112547663A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011330091.7A Pending CN112547663A (en) | 2020-11-24 | 2020-11-24 | Silicon edge leather cleaning process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090081108A1 (en) * | 2007-09-04 | 2009-03-26 | Mitsubishi Materials Corporation | Clean bench and method of producing raw material for single crystal silicon |
| CN101531366A (en) * | 2009-03-09 | 2009-09-16 | 常州有则科技有限公司 | Method for cleaning polycrystalline silicon material |
| CN102266859A (en) * | 2011-07-25 | 2011-12-07 | 营口晶晶光电科技有限公司 | Method and device for cleaning cauliflower-shaped polycrystalline silicon raw material with oxides on surface thereof |
| CN103589538A (en) * | 2013-08-30 | 2014-02-19 | 横店集团东磁股份有限公司 | Cleaning liquid of solar silicon wafer as well as using method thereof |
| CN104445208A (en) * | 2014-12-05 | 2015-03-25 | 江西赛维Ldk太阳能高科技有限公司 | Method for removing impurities from polycrystalline silicon cast ingot leftovers |
| CN109701947A (en) * | 2019-01-04 | 2019-05-03 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of cleaning device and cleaning method of polycrystalline silicon material |
-
2020
- 2020-11-24 CN CN202011330091.7A patent/CN112547663A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090081108A1 (en) * | 2007-09-04 | 2009-03-26 | Mitsubishi Materials Corporation | Clean bench and method of producing raw material for single crystal silicon |
| CN101531366A (en) * | 2009-03-09 | 2009-09-16 | 常州有则科技有限公司 | Method for cleaning polycrystalline silicon material |
| CN102266859A (en) * | 2011-07-25 | 2011-12-07 | 营口晶晶光电科技有限公司 | Method and device for cleaning cauliflower-shaped polycrystalline silicon raw material with oxides on surface thereof |
| CN103589538A (en) * | 2013-08-30 | 2014-02-19 | 横店集团东磁股份有限公司 | Cleaning liquid of solar silicon wafer as well as using method thereof |
| CN104445208A (en) * | 2014-12-05 | 2015-03-25 | 江西赛维Ldk太阳能高科技有限公司 | Method for removing impurities from polycrystalline silicon cast ingot leftovers |
| CN109701947A (en) * | 2019-01-04 | 2019-05-03 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of cleaning device and cleaning method of polycrystalline silicon material |
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Application publication date: 20210326 |