CN105836952A - Solar silicon washing waste acid treatment device and method - Google Patents
Solar silicon washing waste acid treatment device and method Download PDFInfo
- Publication number
- CN105836952A CN105836952A CN201610353643.3A CN201610353643A CN105836952A CN 105836952 A CN105836952 A CN 105836952A CN 201610353643 A CN201610353643 A CN 201610353643A CN 105836952 A CN105836952 A CN 105836952A
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- Prior art keywords
- retort
- waste acid
- silicon
- race element
- reaction
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a solar silicon washing waste acid treatment device and a solar silicon washing waste acid treatment method. The solar silicon washing waste acid treatment device comprises a reaction tank, a filter press and an evaporation drier, wherein the filter press is connected with the reaction tank; the evaporation drier is connected with the filter press; a feeding hole is formed in the reaction tank; an acid inlet tube is arranged on the reaction tank; a spraying tube is arranged inside the reaction tank; the acid inlet tube is connected with the spraying tube. The solar silicon washing waste acid treatment method comprises the following steps: 1) putting at least one of carbonate, bicarbonate and inorganic base together with silicon washing waste acid into a reaction tank for sufficient reaction; 2) adjusting the pH value; 3) conveying slurry generated in the reaction into the filter press for filter pressing; 4) delivering waste dregs generated from filter pressing out to be used in production of ceramic, cement and concrete; 5) feeding a waste liquid generated from filter pressing into the evaporation drier for evaporation crystallization, and collecting the crystal substances. By adopting the device and the method, silicon washing waste acid can be effectively treated, reaction products can be retreated and recycled, industrialization and automation of silicon waste acid treatment can be facilitated, wastes generated from silicon washing waste acid treatment can be recycled, and the wastes can be turned into wealth.
Description
Technical field
The present invention relates to a kind of solar power silicon and wash Waste acid treating device and method.
Background technology
The method that the conventional process inorganic spent acid containing F, N mainly uses acid-base neutralization, it is simple, but the filter mud stickiness produced after reaction is big, and work consuming during handling, cost is the highest.In current existing industrial waste acid processing means, although can solve the problem that automatic charging, automatic discharging, the problem such as vent gas treatment, but along with spent acid treating capacity increase, the problem being difficult to coordinate to solve reaction rate with treatment effeciency.It addition, the spent acid because producing in solar power silicon plate process technique is different with other industrial waste acid, it contains substantial amounts of F, N element, can be only achieved discharge standard after needing to reprocess product.
Therefore, how effectively can be efficiently treated through the spent acid containing F, N element, meanwhile, the product recycling after processing, is to affect solar power silicon to wash two problems crucial, that need solution badly that spent acid processes.
Summary of the invention
It is an object of the invention to provide a kind of solar power silicon and wash Waste acid treating device and method.
The technical solution used in the present invention is:
A kind of solar power silicon washes Waste acid treating device, including retort, the pressure filter being connected with retort, the evaportor being connected with pressure filter；
Wherein, retort is provided with charging aperture and acid inlet tube, is provided with shower in retort；Acid inlet tube is connected with shower.
Described retort includes inner core and urceolus.
Cooling system it is provided with between inner core and urceolus.
Also include the scrubbing tower being connected with retort top.
Retort top is provided with pressure monitor, temperature monitoring and pH monitor；Retort is additionally provided with agitator.
Water inlet pipe and outlet pipe it is additionally provided with in described retort；Slag notch it is additionally provided with on pressure filter.
Utilize said apparatus to process the method that silicon washes spent acid, comprise the following steps:
1) bottom retort, fill out at least one paving carbonate, bicarbonate, inorganic base from charging aperture, then silicon is washed spent acid and is transported to shower by acid inlet tube, and then spray is to filling out on the material being laid on bottom, static reaction；Turn on agitator stirs, monitoring pressure, temperature and pH value, fully reacts；
2) add inorganic base, regulate pH；
3) the slurry transportation entrance pressure filter produced in course of reaction carries out filter pressing；
4) the waste residue output that filter pressing produces, can be applicable in the middle of the production of pottery, cement, concrete；
5) waste liquid that filter pressing produces is sent into evaportor and is evaporated crystallization, collects crystal.
In step 1), described carbonate is at least one in the carbonate of the carbonate of I A race element, II A race element；Described bicarbonate is at least one in the bicarbonate of the bicarbonate of I A race element, II A race element；Described inorganic base is at least one in the hydroxide of the hydroxide of I A race element, II A race element.
In step 1), the waste gas produced in course of reaction is sent in scrubbing tower and is carried out basification.
Step 2) in, described inorganic base is at least one in the hydroxide of the hydroxide of I A race element, II A race element.
The invention has the beneficial effects as follows:
The technique of the present invention can efficiently process silicon and wash spent acid, simultaneously, recycle after product can be reprocessed, so not only contribute to solar power silicon and wash industrialization and the automatization that spent acid processes, and can also realize that silicon is washed spent acid and process the recycling waste produced, reach to turn waste into wealth, the effect of effectively save resource.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this device；
1: urceolus；2: inner core；3: charge door；4: acid inlet tube；5: shower；6: seal lid；7: rate controlling agitator；8: pressure monitor；9: temperature monitoring；10:pH monitor；11: vacuum pump；12: scrubbing tower；13: scrub raffinate outlet；14: air vent；15: pressure filter；16: slag notch；17: evaportor；18: crystallization outlet；19: water inlet pipe；20: outlet pipe.
Detailed description of the invention
A kind of solar power silicon washes Waste acid treating device, including retort, the pressure filter 15 being connected with retort, the evaportor 17 being connected with pressure filter 15；Evaportor 17 is provided with crystallization outlet 18；Pressure filter 15 is provided with slag notch 16；
Wherein, retort is provided with charging aperture 3 and acid inlet tube 4, is provided with shower 5 in retort；Acid inlet tube 4 is connected with shower 5；
Preferably, described retort includes inner core 2 and urceolus 1；It is provided with cooling system between inner core 2 and urceolus 1；
Preferably, the scrubbing tower 12 being connected with retort top is also included；The pipeline that scrubbing tower 12 is connected with retort top is provided with vacuum pump 11；Scrubbing tower 12 is provided with scrub raffinate outlet 13 and air vent 14；
Preferably, retort top is provided with pressure monitor 8, temperature monitoring 9 and pH monitor 10；Retort is additionally provided with rate controlling agitator 7；Retort is sealed by the sealing lid 6 at top；
Preferably, described retort is additionally provided with water inlet pipe 19 and outlet pipe 20.
Utilize said apparatus to process the method that silicon washes spent acid, comprise the following steps:
1) bottom retort, fill out at least one paving carbonate, bicarbonate, inorganic base from charging aperture, then silicon is washed spent acid and is transported to shower by acid inlet tube, and then spray is to filling out on the material being laid on bottom, static reaction；Turn on agitator stirs, monitoring pressure, temperature and pH value, fully reacts；
2) add inorganic base, regulate pH；
3) the slurry transportation entrance pressure filter produced in course of reaction carries out filter pressing；
4) the waste residue output that filter pressing produces, can be applicable in the middle of the production of pottery, cement, concrete, such as with clay, shale manufacturing bricks by mixing；
5) waste liquid that filter pressing produces is sent into evaportor and is evaporated crystallization, collects crystal.
Preferably, in step 1), described carbonate is at least one in the carbonate of the carbonate of I A race element, II A race element；Described bicarbonate is at least one in the bicarbonate of the bicarbonate of I A race element, II A race element；Described inorganic base is at least one in the hydroxide of the hydroxide of I A race element, II A race element；
It is further preferred that in step 1), from charging aperture to filling out at least one spread following material bottom retort: at least one in magnesium hydroxide, calcium hydroxide, magnesium carbonate, calcium carbonate, magnesium bicarbonate, calcium bicarbonate.
Preferably, in step 1), the waste gas produced in course of reaction is sent in scrubbing tower and is carried out basification；
Preferably, in step 1), the time of static reaction is 120-180min；
Preferably, in step 1), after turn on agitator, reaction temperature controls below 80 DEG C；
Preferably, step 2) in, described inorganic base is at least one in the hydroxide of the hydroxide of I A race element, II A race element；Preferably, at least one in sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide；It is further preferred that be at least one in sodium hydroxide, potassium hydroxide, calcium hydroxide.
Preferably, described silicon is washed in spent acid, and HF concentration is 10～30%；HNO3Concentration is 5～30%.
Below in conjunction with embodiment, the technological process of the present invention is described further:
Embodiment:
Silicon washes spent acid I: (HF concentration is 13.46～16.30% to the spent acid that process solar power silicon plate produces；HNO3Concentration is 8.33～16.66%), pH value < 0.
(R=3.5m in reaction in charging aperture, h=5m) compound alkali (calcium hydroxide, calcium carbonate, the mixture of calcium bicarbonate) 3 t of bottom tiling, then with vacuum air pump, spent acid is sprayed on compound alkali layer by pipeline equably, after static reaction 120-180min, turn on agitator stirs, and stirring reaction 30-60min monitors pressure and temperature simultaneously, is allowed to fully react, when not having smog to produce in whole reaction tank, i.e. reaction is completely (now pH value is 5.0 ~ 5.5).Add sheet aqueous slkali or pH value is transferred to 8.0 ~ 9.0 by lime cream.Waste gas (the mainly CO that air exhauster will produce in retort is opened in course of reaction2, a small amount of HF and HNO3Gas) extract out, deliver to basification in gas shower scrubbing tower, in the process, maintain and whole course of reaction keeps in retort negative pressure.After reaction terminates, open pressure filter and the mud in retort is carried out filter pressing, after filter pressing, obtain waste residue, it is made pottery, cement, concrete etc. after clay, shale mixing.Waste liquid utilizes heat energy to evaporate in then delivering to evaporation drying machine, and collects crystal, after purification can be as the feedstock circulation recycling making chemical fertilizer, chemical reagent etc..
Waste gas, waste liquid, waste residue etc. are repeatedly tested, and pH value is 7.0, and fluoride 1.62 mg/L(standard is limited to 10 mg/L), effect stability.
Claims (10)
1. a solar power silicon washes Waste acid treating device, it is characterised in that: include retort, the pressure filter being connected with retort, the evaportor being connected with pressure filter；
Wherein, retort is provided with charging aperture and acid inlet tube, is provided with shower in retort；Acid inlet tube is connected with shower.
A kind of solar power silicon the most according to claim 1 washes Waste acid treating device, it is characterised in that: described retort includes inner core and urceolus.
A kind of solar power silicon the most according to claim 1 and 2 washes Waste acid treating device, it is characterised in that: it is provided with cooling system between inner core and urceolus.
A kind of solar power silicon the most according to claim 3 washes Waste acid treating device, it is characterised in that: also include the scrubbing tower being connected with retort top.
5. wash Waste acid treating device according to a kind of solar power silicon described in claim 1 or 4, it is characterised in that: retort top is provided with pressure monitor, temperature monitoring and pH monitor；Retort is additionally provided with agitator.
A kind of solar power silicon the most according to claim 5 washes Waste acid treating device, it is characterised in that: it is additionally provided with water inlet pipe and outlet pipe in described retort；Slag notch it is additionally provided with on pressure filter.
7. the device utilizing claim 1 or 6 processes the method that silicon washes spent acid, it is characterised in that: comprise the following steps:
1) bottom retort, fill out at least one paving carbonate, bicarbonate, inorganic base from charging aperture, then silicon is washed spent acid and is transported to shower by acid inlet tube, and then spray is to filling out on the material being laid on bottom, static reaction；Turn on agitator stirs, monitoring pressure, temperature and pH value, fully reacts；
2) add inorganic base, regulate pH；
3) the slurry transportation entrance pressure filter produced in course of reaction carries out filter pressing；
4) the waste residue output that filter pressing produces, can be applicable in the middle of the production of pottery, cement, concrete；
5) waste liquid that filter pressing produces is sent into evaportor and is evaporated crystallization, collects crystal.
Method the most according to claim 7, it is characterised in that: in step 1), described carbonate is at least one in the carbonate of the carbonate of I A race element, II A race element；Described bicarbonate is at least one in the bicarbonate of the bicarbonate of I A race element, II A race element；Described inorganic base is at least one in the hydroxide of the hydroxide of I A race element, II A race element.
9. according to the method described in claim 7 or 8, it is characterised in that: in step 1), the waste gas produced in course of reaction is sent in scrubbing tower and is carried out basification.
Method the most according to claim 9, it is characterised in that: step 2) in, described inorganic base is at least one in the hydroxide of the hydroxide of I A race element, II A race element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610353643.3A CN105836952A (en) | 2016-05-25 | 2016-05-25 | Solar silicon washing waste acid treatment device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610353643.3A CN105836952A (en) | 2016-05-25 | 2016-05-25 | Solar silicon washing waste acid treatment device and method |
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| CN105836952A true CN105836952A (en) | 2016-08-10 |
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| CN201610353643.3A Pending CN105836952A (en) | 2016-05-25 | 2016-05-25 | Solar silicon washing waste acid treatment device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052610A (en) * | 2018-09-12 | 2018-12-21 | 嘉善欣达胶业有限公司 | It is a kind of to repeat to neutralize acid waste liquid device using carbon dioxide |
| CN111499051A (en) * | 2020-05-28 | 2020-08-07 | 马鞍山市华清环保工程有限公司 | Hydrofluoric acid waste liquid treatment reaction kettle and treatment method thereof |
| CN114014471A (en) * | 2022-01-05 | 2022-02-08 | 天津海关动植物与食品检测中心 | Digestion waste acid absorption treatment device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052610A (en) * | 2018-09-12 | 2018-12-21 | 嘉善欣达胶业有限公司 | It is a kind of to repeat to neutralize acid waste liquid device using carbon dioxide |
| CN111499051A (en) * | 2020-05-28 | 2020-08-07 | 马鞍山市华清环保工程有限公司 | Hydrofluoric acid waste liquid treatment reaction kettle and treatment method thereof |
| CN114014471A (en) * | 2022-01-05 | 2022-02-08 | 天津海关动植物与食品检测中心 | Digestion waste acid absorption treatment device |
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Application publication date: 20160810 |
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