CN109888424A - A kind of processing system of waste and old lead acid accumulator electrolyte - Google Patents
A kind of processing system of waste and old lead acid accumulator electrolyte Download PDFInfo
- Publication number
- CN109888424A CN109888424A CN201910214158.1A CN201910214158A CN109888424A CN 109888424 A CN109888424 A CN 109888424A CN 201910214158 A CN201910214158 A CN 201910214158A CN 109888424 A CN109888424 A CN 109888424A
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- China
- Prior art keywords
- electrolyte
- concentrate
- effect evaporation
- evaporation
- processing system
- Prior art date
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 65
- 239000002253 acid Substances 0.000 title claims abstract description 44
- 239000002699 waste material Substances 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 51
- 238000001704 evaporation Methods 0.000 claims abstract description 46
- 230000008020 evaporation Effects 0.000 claims abstract description 46
- 239000012141 concentrate Substances 0.000 claims abstract description 37
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000005119 centrifugation Methods 0.000 claims abstract description 9
- 238000010612 desalination reaction Methods 0.000 claims abstract description 9
- 238000005265 energy consumption Methods 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000013078 crystal Substances 0.000 claims abstract description 5
- 239000013618 particulate matter Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A kind of processing system of waste and old lead acid accumulator electrolyte, it include: the filter press for removing broken impurity and large particulate matter in electrolyte, preheated device is preheated, enter triple effect evaporation after the preheated device preheating of electrolyte, electrolyte is by triple effect evaporation acid strength by 20% or so concentrate to 50%, electrolyte enters multiple 1st effective evaporator after triple effect evaporation, concentration is by 50% concentrate to 70% after acid solution is answered an effect evaporation, electrolyte goes centrifuge to carry out centrifugation desalination after multiple effect evaporation and concentrating, treated, and electrolyte comes back to surge tank progress next process concentrate evaporation, acid is dense by 70 ± 2% concentrates to technical grade sulfuric acid after the processing of concentrate evaporator, it decrystallizes object storage tank by the crystal that centrifuge twice separates.Sulfuric acid boiling point reduces under negative pressure state, can save steam energy consumption, reduces production cost, while sulfuric acid can be provided to commercial acid from 20-25% using multiple-effect evaporation, improves the utility value of sulfuric acid.
Description
Technical field
The present invention relates to electrolyte process field, in particular to a kind of processing system of waste and old lead acid accumulator electrolyte.
Background technique
China becomes whole world lead-acid storage battery production and most commonly used country.The yield of China's lead-acid accumulator accounts for entirely
The 1/3 of world wide production, the annual lead-acid accumulator learies in China are up to 2,000,000 tons or more at this stage.It is electric in lead-acid accumulator
Liquid accounting about 20-25% is solved, most acid solution can be deposited during lead-acid accumulator dismantling, if processing or disposition
It is improper, arbitrarily topple over, the serious contaminated soil of meeting and water source are directly detrimental to health.
Simultaneously as concentration of electrolyte is low, without direct utility value；Because its harmfulness, and cannot arbitrarily discharge.Cause
It is larger for the accounting of electrolyte, promote each lead-acid accumulator processing enterprise to turn waste into wealth by every means.Benefit is being brought to company
Environment can be protected while profit again, responds national environmental protection policy.
Though CN107670315A technology is sulphuric acid concentration technology, in accumulator electrolyte containing more impurity and again
Metal ion, this technology cannot be guaranteed system even running.And the waste heat of steam condensate is underused in this technology.While this
Technology dynamics facility is more, and energy consumption is big, high production cost.
Summary of the invention
For above-mentioned deficiency in the prior art, the present invention provides a kind of processing systems of waste and old lead acid accumulator electrolyte
It unites, under vacuum state, material is evaporated by differential pressure step by step in system flow, saves power device；Simultaneously under negative pressure state
Sulfuric acid boiling point reduces, and can save steam energy consumption, reduces production cost, while sulfuric acid can be provided from 20-25% using multiple-effect evaporation
To 93% commercial acid, the utility value of sulfuric acid is improved.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows:
A kind of processing system of waste and old lead acid accumulator electrolyte, comprising: broken impurity and large particulate matter in removal electrolyte
Filter press, preheated device preheated, and enters triple effect evaporation after the preheated device preheating of electrolyte, electrolyte passes through triple effect evaporation
Acid strength is by 20% or so concentrate to 50%, and electrolyte enters multiple 1st effective evaporator after triple effect evaporation, and acid solution is through a multiple effect
Concentration is gone centrifuge to carry out centrifugation desalination, is handled by 50% concentrate to 70%, electrolyte after multiple effect evaporation and concentrating after evaporation
Electrolyte afterwards comes back to surge tank and carries out the evaporation of next process concentrate, and electrolyte is by answering after an effect is evaporated directly into concentrate
Evaporator, acid is dense by 70 ± 2% concentrates to technical grade sulfuric acid after the processing of concentrate evaporator, and electrolyte is after concentrate is evaporated
Centrifuge is gone to carry out last centrifugation desalination, progress product is cooling after product pans buffering, and then pump is delivered to product storage tank,
It decrystallizes object storage tank by the crystal that centrifuge twice separates.
Further, an effect is heated using steam, and steam condensate goes preheater to provide heat source.
Further, the steam that two effect and triple effect imitate evaporation using one provides heat source.
Further, the multiple 1st effective evaporator is heated using steam, and steam condensate goes preheater to provide heat source.
Further, the concentrate evaporator is heated using steam, and steam condensate goes preheater to provide heat source.
Further, when electrolyte is evaporated through triple effect evaporation to a multiple effect, secondary steam is separately connected gas-liquid separator 1, gas
Liquid/gas separator 2, gas-liquid separator 3, the tail gas generated in the process is after tail gas condenser 1 and tail gas condenser 2 are handled, through vacuum
After device processing, qualified discharge.
Further, the processing system of the electrolyte uses negative pressure operating condition, reduces acid solution boiling point, saves energy consumption.
The invention has the benefit that
Electrolyte passes through multiple-effect evaporation, and system vacuumizes, and heat source is low-pressure steam, under vacuum state, in process flow material according to
It is evaporated by differential pressure step by step, saves power device；Sulfuric acid boiling point reduces under negative pressure state simultaneously, can save steam energy consumption, drops
Low production cost, while sulfuric acid can be provided to from 20-25% using multiple-effect evaporation by 93% commercial acid, improve the utilization of sulfuric acid
Value considers that salt precipitation is attached to influence heat transfer effect in pipeline and heat exchanger in evaporation process, using centrifuge to process
Electrolyte carries out centrifugation salt extraction, guarantees production continuous and steady operation, while using multi-effect evaporation system, basic three-waste free discharge,
Few containing acidic materials in vacuum tail gas, the tail gas that system generates carries out acid gas wash, standard discharge after system is collected.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Further illustrate a specific embodiment of the invention with reference to the accompanying drawing.Wherein identical components are with identical
Appended drawing reference indicates.
It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to
Direction in attached drawing, word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.
In order that the present invention can be more clearly and readily understood, following will be combined with the drawings in the embodiments of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described.
As shown in Figure 1, a kind of processing system of waste and old lead acid accumulator electrolyte, comprising: broken miscellaneous in removal electrolyte
The filter press of matter and large particulate matter, preheated device are preheated, and enter triple effect evaporation, electrolysis after the preheated device preheating of electrolyte
For liquid by triple effect evaporation acid strength by 20% or so concentrate to 50%, electrolyte enters multiple effect evaporation after triple effect evaporation
Device, acid solution after a multiple effect evaporation concentration by 50% concentrate to 70%, electrolyte gone after a multiple effect evaporation and concentrating centrifuge into
Row centrifugation desalination, treated, and electrolyte comes back to surge tank progress next process concentrate evaporation, and electrolyte is by a multiple effect
Directly into concentrate evaporator after evaporation, acid is dense by 70 ± 2% concentrates to technical grade sulfuric acid, electrolysis after the processing of concentrate evaporator
Liquid goes centrifuge to carry out last centrifugation desalination after concentrate is evaporated, and progress product is cooling after product pans buffering, then
Pump is delivered to product storage tank, decrystallizes object storage tank by the crystal that centrifuge twice separates.
One effect is heated using steam, and steam condensate goes preheater to provide heat source.Two effect and triple effect are using an effect
The steam of evaporation provides heat source.The multiple 1st effective evaporator is heated using steam, and steam condensate goes preheater to provide heat source.It is described
Concentrate evaporator is heated using steam, and steam condensate goes preheater to provide heat source.Electrolyte is evaporated through triple effect evaporation to a multiple effect
When, secondary steam is separately connected gas-liquid separator 1, gas-liquid separator 2, gas-liquid separator 3, and the tail gas generated in the process is through tail gas
After condenser 1 and tail gas condenser 2 are handled, after vacuum plant is handled, qualified discharge.The processing system of the electrolyte uses
Negative pressure operating condition reduces acid solution boiling point, saves energy consumption.
The processing system route of electrolyte:
1, after lead-acid accumulator is handled in storage battery dicang and vibrating feeder, electrolyte is gone after filter press pre-processes after collecting
Except in electrolyte broken impurity and large particulate matter deposit to tank bottom, carry out the removal for the first time for electrolyte impurity；
2, storage tank electrolyte inside by potential difference be delivered to system processing, into system before preheated device using it is each effect evaporator steam
Lime set is preheated, and thermal energy is made full use of；
3, enter triple effect evaporation after the preheated device preheating of electrolyte, an effect is heated using steam, and steam condensate goes preheater to provide
Heat source, two effects and triple effect provide heat source using the steam of prime evaporation, guarantee making full use of for thermal energy, and electrolyte is steamed by triple effect
Acid strength is sent out by 20% concentrate to 50%；
4, electrolyte enters multiple 1st effective evaporator after triple effect concentrate, and multiple 1st effective evaporator is heated using steam, steam condensate
Preheater is gone to provide heat source, concentration is by 50% concentrate to 70% after acid solution is answered an effect evaporation；
5, electrolyte goes centrifuge to carry out centrifugation desalination after multiple effect evaporation and concentrating, and treated, and that electrolyte comes back to is slow
It rushes tank and carries out the evaporation of next process concentrate；
6, electrolyte enters concentrate evaporator after multiple 1st effective evaporator concentrate, and concentrate evaporator is heated using steam, steam
Lime set goes preheater to provide heat source, and concentration is by 70 ± 2% concentrates to technical grade sulfuric acid after acid solution is answered an effect evaporation；
7, electrolyte goes centrifuge to carry out last centrifugation desalination after concentrate is evaporated, and guarantees the quality of sulfuric acid product；
8, the final products sulfuric acid by above-mentioned processing carries out product cooling after going product pans to buffer, then pump is delivered to
Product storage tank is sold outside；
9, it decrystallizes object storage tank by the crystal that centrifuge twice separates.
The above description is only a preferred embodiment of the patent of the present invention, is not intended to limit the invention patent, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the invention patent within the spirit and principle of patent of invention
Protection scope within.
Claims (7)
1. a kind of processing system of waste and old lead acid accumulator electrolyte characterized by comprising the broken impurity in removal electrolyte
With the filter press of large particulate matter, preheated device is preheated, and enters triple effect evaporation, electrolyte after the preheated device preheating of electrolyte
By triple effect evaporation acid strength by 20% or so concentrate to 50%, electrolyte enters multiple 1st effective evaporator after triple effect evaporation,
Acid solution after a multiple effect evaporation concentration by 50% concentrate to 70%, electrolyte gone after a multiple effect evaporation and concentrating centrifuge carry out from
Heart desalination, treated, and electrolyte comes back to surge tank progress next process concentrate evaporation, and electrolyte is evaporated by a multiple effect
Afterwards directly into concentrate evaporator, acid is dense by 70 ± 2% concentrates to technical grade sulfuric acid, electrolyte warp after the processing of concentrate evaporator
The last centrifugation desalination of centrifuge progress is removed after crossing concentrate evaporation, product cooling is carried out after product pans buffering, is then pumped defeated
It send to product storage tank, decrystallizes object storage tank by the crystal that centrifuge twice separates.
2. a kind of processing system of waste and old lead acid accumulator electrolyte according to claim 1, it is characterised in that: described one
Effect is heated using steam, and steam condensate goes preheater to provide heat source.
3. a kind of processing system of waste and old lead acid accumulator electrolyte according to claim 1, it is characterised in that: described two
The steam that effect and triple effect imitate evaporation using one provides heat source.
4. a kind of processing system of waste and old lead acid accumulator electrolyte according to claim 1, it is characterised in that: described multiple
1st effective evaporator is heated using steam, and steam condensate goes preheater to provide heat source.
5. a kind of processing system of waste and old lead acid accumulator electrolyte according to claim 1, it is characterised in that: described to mention
Dense evaporator is heated using steam, and steam condensate goes preheater to provide heat source.
6. a kind of processing system of waste and old lead acid accumulator electrolyte according to claim 1, it is characterised in that: electrolyte
When through triple effect evaporation to multiple effect evaporation, secondary steam is separately connected gas-liquid separator 1, gas-liquid separator 2, gas-liquid separator 3,
The tail gas generated in the process is after tail gas condenser 1 and tail gas condenser 2 are handled, after vacuum plant is handled, qualified discharge.
7. a kind of processing system of waste and old lead acid accumulator electrolyte according to claim 1, it is characterised in that: the electricity
The processing system for solving liquid uses negative pressure operating condition, reduces acid solution boiling point, saves energy consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910214158.1A CN109888424A (en) | 2019-03-20 | 2019-03-20 | A kind of processing system of waste and old lead acid accumulator electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910214158.1A CN109888424A (en) | 2019-03-20 | 2019-03-20 | A kind of processing system of waste and old lead acid accumulator electrolyte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109888424A true CN109888424A (en) | 2019-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910214158.1A Pending CN109888424A (en) | 2019-03-20 | 2019-03-20 | A kind of processing system of waste and old lead acid accumulator electrolyte |
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| CN (1) | CN109888424A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755768A (en) * | 2020-07-28 | 2020-10-09 | 韶山润泽新能源科技有限公司 | Waste battery negative electrode powder regeneration treatment system and process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865128A (en) * | 2006-04-14 | 2006-11-22 | 浙江闰土股份有限公司 | Method for utilizing low-concentration waste sulfuric acid through multi-effect concentration and flash evaporation |
| CN102151415A (en) * | 2011-01-18 | 2011-08-17 | 大连理工大学 | Low-temperature multiple-effect evaporation crystallization and filtration process |
| CN205699515U (en) * | 2016-05-17 | 2016-11-23 | 常州泰特环境设备工程有限公司 | A kind of dilute sulfuric acid waste liquid 3+1 negative pressure evaporation enrichment facility |
| CN109200610A (en) * | 2018-11-22 | 2019-01-15 | 南通星球石墨设备有限公司 | A kind of sulphuric acid concentration system |
-
2019
- 2019-03-20 CN CN201910214158.1A patent/CN109888424A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865128A (en) * | 2006-04-14 | 2006-11-22 | 浙江闰土股份有限公司 | Method for utilizing low-concentration waste sulfuric acid through multi-effect concentration and flash evaporation |
| CN102151415A (en) * | 2011-01-18 | 2011-08-17 | 大连理工大学 | Low-temperature multiple-effect evaporation crystallization and filtration process |
| CN205699515U (en) * | 2016-05-17 | 2016-11-23 | 常州泰特环境设备工程有限公司 | A kind of dilute sulfuric acid waste liquid 3+1 negative pressure evaporation enrichment facility |
| CN109200610A (en) * | 2018-11-22 | 2019-01-15 | 南通星球石墨设备有限公司 | A kind of sulphuric acid concentration system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755768A (en) * | 2020-07-28 | 2020-10-09 | 韶山润泽新能源科技有限公司 | Waste battery negative electrode powder regeneration treatment system and process |
| CN111755768B (en) * | 2020-07-28 | 2021-02-19 | 韶山润泽新能源科技有限公司 | Waste battery negative electrode powder regeneration treatment system and process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190614 |