CN207581401U - A kind of device of method treatment of acidic wastewater using concentration stripping - Google Patents
A kind of device of method treatment of acidic wastewater using concentration stripping Download PDFInfo
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- CN207581401U CN207581401U CN201721427904.8U CN201721427904U CN207581401U CN 207581401 U CN207581401 U CN 207581401U CN 201721427904 U CN201721427904 U CN 201721427904U CN 207581401 U CN207581401 U CN 207581401U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000002378 acidificating effect Effects 0.000 title claims abstract description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 38
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000001704 evaporation Methods 0.000 claims abstract description 32
- 230000008020 evaporation Effects 0.000 claims abstract description 32
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002253 acid Substances 0.000 claims abstract description 23
- 239000011552 falling film Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005485 electric heating Methods 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 238000003763 carbonization Methods 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 26
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract description 12
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- 239000012141 concentrate Substances 0.000 abstract description 5
- 239000012153 distilled water Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 241001417490 Sillaginidae Species 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910003978 SiClx Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model belongs to technical field of sewage treatment equipment, and in particular to a kind of device of method treatment of acidic wastewater using concentration stripping.It is made of evaporation concentration system and stripping condenser system, the evaporation concentration system includes tetrafluoro heat exchange condensers, horizontal tank, silicon carbide falling film evaporation tower, silicon carbide preheater, the first gas-liquid separator, feed pump, forced circulation pump and vapour compression machine, and electric heating equipment is equipped in the horizontal tank；The stripping condenser system includes stripping tower, the second gas-liquid separator, cooling tower and condenser.Acid waste water is after concentration and evaporation system according to distilled water：Concentrate is more than 7：3 ratio realization is concentrated to give concentrate, so as to mitigate the energy consumption of stripping workshop section.Concentrate is separable into sulfuric acid and hydrochloric acid or hydrofluoric acid containing heavy metal after entering stripping workshop section, and the sulfuric acid containing heavy metal, which can return, smelts workshop section's recycling, and hydrochloric acid or hydrofluoric acid can be utilized after processing as hydrochloric acid product, save resource.
Description
Technical field
The utility model belongs to technical field of sewage treatment equipment, and in particular to a kind of method processing using concentration stripping
The device of acid waste water.
Background technology
MVR evaporators, English Mechanical Vapor Recompression abbreviations, referred to as " mechanical steam is pressed again
Contracting " evaporator.It is a kind of novel high-efficiency and energy-saving evaporation equipment that developed later 1990s.MVR evaporators are
Low temperature is used, for " electric energy ", to generate steam with low-pressure steam steaming technique and clean energy resource, the moisture in medium is separated.At present
MVR is state-of-the-art evaporation technique in the world, is the upgraded product for substituting conventional evaporator.There was only North America and Europe at present
Application of this technology in various fields has been grasped Deng some developed countries.
At present, the domestic acid waste water containing heavy metal to smelting, electroplating industry（Main acid is sulfuric acid, according to raw material not
It is same to contain a small amount of hydrochloric acid or hydrofluoric acid）Processing is mostly using neutralisation treatment, and not only high energy consumption, drug dosage are big for neutralisation treatment method,
Acid can be recycled by also wasting simultaneously, cause the waste of resource.Preferable recovery acid is had no in the prior art
The equipment of acid in property waste water, so that the processing of acid waste water is rested on always in original Process ba- sis.It introduces
New equipment and thinking carries out concentration to acid waste water, and a recyclable sulfuric acid containing heavy metal component, two can obtain work
Industry grade hydrochloric acid or hydrofluoric acid solve to realize recycling while environmental problem.
Utility model content
The purpose of this utility model is to solve the deficiencies in the prior art, and MVR evaporators are applied to acidity well
In wastewater treatment, so as to obtain a kind of device of the method treatment of acidic wastewater using concentration stripping.
The utility model is achieved by the following technical solution：
The device of a kind of method treatment of acidic wastewater using concentration stripping, by evaporation concentration system and stripping condenser system
Composition, it is pre- that the evaporation concentration system includes tetrafluoro heat exchange condensers, horizontal tank, silicon carbide falling film evaporation tower, silicon carbide
Hot device, the first gas-liquid separator, feed pump, forced circulation pump and vapour compression machine, the horizontal tank is interior to be equipped with electrical heating
Equipment；The tetrafluoro heat exchange condensers, silicon carbide falling film evaporation tower, silicon carbide preheater are shell-and-tube heat exchanger, tetrafluoro
Heat exchange condensers tube side import is connected with feed pump, in tetrafluoro heat exchange condensers tube side outlet to horizontal tank；It is described
The first gas-liquid separator inlet communication road horizontal tank inside, the first gas-liquid separator device outlet to both vapor compression
Machine；The forced circulation pump is communicated to horizontal tank bottom, and the outlet of forced circulation pump is divided into two, and one is connected by valve
Stripping condenser system is led to, in addition one is communicated in silicon carbide preheater import；The outlet of the silicon carbide preheater connects
The import of silicon carbide falling film evaporation tower is led to, in the outlet to horizontal tank of silicon carbide falling film evaporation tower；The steam
Compressor outlet pipe is divided into two, and the import of a shell side for being communicated to silicon carbide falling film evaporation tower, in addition one is communicated to carbon
The import of SiClx preheater shell side；The outlet of the shell side of silicon carbide falling film evaporation tower and the outlet of silicon carbide preheater shell side are common
It is communicated to tetrafluoro heat exchange condensers shell side import；The outlet of tetrafluoro heat exchange condensers shell side to distillation water storage tank；Described
Stripping condenser system includes stripping tower, the second gas-liquid separator, cooling tower and condenser, and it is empty to be equipped with stripping in the stripping tower
Tracheae, the inlet end of stripping air hose are equipped with electric heater；In the second gas-liquid separator inlet communication road stripping tower
Portion, outlet are connected with the import of condenser；Condenser bottom is exported equipped with acid solution, and cooling jacket is additionally provided on condenser, cold
But the outlet road cooling tower top of the coolant in chuck, the import of the coolant in cooling jacket are communicated to by water pump
Cool down tower bottom；The stripping tower bottom is additionally provided with discharge nozzle, and residing discharge nozzle is stored up by the Pump for giving-out communication channel concentrated sulfuric acid
Tank；The outlet for being communicated to the forced circulation pump of stripping condenser system is connected with stripping tower.
The vapour compression machine is lining tetrafluoro Roots's vapour compression machine.
The power of the electric heating equipment is 30-60Kw.
The condensing tower is tube shell type structure.
Compared with prior art, the utility model provides a kind of dress of the method treatment of acidic wastewater using concentration stripping
It puts, acid waste water is after concentration and evaporation system according to distilled water：Concentrate is more than 7：3 ratio realization is concentrated to give concentration
Liquid, so as to mitigate the energy consumption of stripping workshop section.Concentrate enter after stripping workshop section be separable into sulfuric acid containing heavy metal and hydrochloric acid or
Hydrofluoric acid, the sulfuric acid containing heavy metal, which can return, smelts workshop section's recycling, and hydrochloric acid or hydrofluoric acid can conducts after subsequent processing
Hydrochloric acid product is utilized, and has saved resource；By introducing MVR evaporators, the secondary use of heat is realized, reduces energy consumption；
By in compressor inside lining anti-corrosive layer so that the utility model can be handled strongly acid wastewater, and applicability is wide；Using carbon
SiClx pipe is as heat exchanger tube so that heat exchange efficiency improves 7 times or more；In addition, the utility model also has reasonable design, operation letter
The features such as single, is handled acid waste water using the utility model, is not needed to addition drug and is neutralized, while also recycle
Discarded acid, significantly reduces production cost.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model,
In figure：1- cooling towers, 2- condensers, the second gas-liquid separators of 3-, 4- stripping towers, 5- stripping air hoses, 6- electricity add
Hot device, 7- Pump for giving-out, 8- water pumps, 9- silicon carbide preheaters, 10- silicon carbide falling film evaporation towers, 11- vapour compression machines, 12- first
Gas-liquid separator, 13- horizontal tanks, 14- electric heating equipments, 15- horizontal tanks bottom, 16- tetrafluoro heat exchange condensers, 17- into
Material pump, 18- forced circulation pumps, 19- valves.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples, but the scope of protection of the utility model is not
It is limited by embodiment.
Embodiment 1
The device of a kind of method treatment of acidic wastewater using concentration stripping, by evaporation concentration system and stripping condenser system
Composition, it is pre- that the evaporation concentration system includes tetrafluoro heat exchange condensers, horizontal tank, silicon carbide falling film evaporation tower, silicon carbide
Hot device, the first gas-liquid separator, feed pump, forced circulation pump and vapour compression machine, the horizontal tank is interior to be equipped with electrical heating
Equipment；The tetrafluoro heat exchange condensers, silicon carbide falling film evaporation tower, silicon carbide preheater are shell-and-tube heat exchanger, tetrafluoro
Heat exchange condensers tube side import is connected with feed pump, in tetrafluoro heat exchange condensers tube side outlet to horizontal tank；It is described
The first gas-liquid separator inlet communication road horizontal tank inside, the first gas-liquid separator device outlet to both vapor compression
Machine；The forced circulation pump is communicated to horizontal tank bottom, and the outlet of forced circulation pump is divided into two, and one passes through valve
Stripping condenser system is communicated to, in addition one is communicated to by valve in silicon carbide preheater import；The silicon carbide preheating
The outlet of device to silicon carbide falling film evaporation tower import, in the outlet to horizontal tank of silicon carbide falling film evaporation tower；
The vapour compression machine outlet is divided into two, the import of a shell side for being communicated to silicon carbide falling film evaporation tower, and in addition one
Root is communicated to the import of silicon carbide preheater shell side；The outlet of the shell side of silicon carbide falling film evaporation tower and silicon carbide preheater shell side
Outlet be communicated to tetrafluoro heat exchange condensers shell side import jointly；The outlet of tetrafluoro heat exchange condensers shell side is stored up to distilled water
Tank；The stripping condenser system includes stripping tower, the second gas-liquid separator, cooling tower and condenser, in the stripping tower
Equipped with stripping air hose, the inlet end of stripping air hose is equipped with electric heater；The second gas-liquid separator inlet communication
Inside road stripping tower, outlet be connected with the import of condenser；Condenser bottom is exported equipped with acid solution, is additionally provided on condenser cold
But chuck, the outlet road cooling tower top of the coolant in cooling jacket, the import of the coolant in cooling jacket pass through
Water pump is communicated to cooling tower bottom；The stripping tower bottom is additionally provided with discharge nozzle, and residing discharge nozzle is connected by Pump for giving-out
Road concentrated sulfuric acid storage tank；The outlet for being communicated to the forced circulation pump of stripping condenser system is connected with stripping tower.
The vapour compression machine is lining tetrafluoro Roots's vapour compression machine.
The power of the electric heating equipment is 30Kw.
The condensing tower is tube shell type structure.
Experimental example 1
The acid waste water of certain smeltery is handled by the equipment of embodiment 1, it is specific as follows：
Feed Zn in pump inlet spent acid2+Content is 2460ppm, sulfuric acid content 5.1%, content of hydrochloric acid 0.2%.
The heating and temperature control of electric heating equipment is 98 DEG C.
The temperature control of electric heater is 102 DEG C.
Following material is obtained after treatment：
（1）Distillation water storage tank obtains Cl-Content is 15ppm, Zn2+Content is 0.02ppm, SO4 2-Content is 0.05ppm's
Distilled water；
（2）Concentrated sulfuric acid storage tank obtains Zn2+The acid solution that content is 5740ppm, sulfuric acid concentration is 11.8%；
（3）Storage tank Inner obtains hydrochloric a concentration of 59.8% hydrochloric acid solution.
Experimental example 2
Acid waste water caused by certain electroplating enterprise is handled by the equipment of embodiment 1, it is specific as follows：
Feed Zn in pump inlet spent acid2+Content is 3678ppm, sulfuric acid content 6.8%, content of hydrochloric acid 1.2%.
The heating and temperature control of electric heating equipment is 99 DEG C.
The temperature control of electric heater is 104 DEG C.
Following material is obtained after treatment：
（1）Distillation water storage tank obtains Cl-Content is 16.3ppm, Zn2+Content is 0.04ppm, SO4 2-Content is 0.06ppm
Distilled water；
（2）Concentrated sulfuric acid storage tank obtains Zn2+The acid solution that content is 6369ppm, sulfuric acid concentration is 12.4%；
（3）Storage tank Inner obtains hydrochloric a concentration of 61.2% hydrochloric acid solution.
By experimental example 1 and 2 it is found that can efficiently be received the hydrochloric acid in acid waste water and sulfuric acid by the utility model
Collection, while lime slag is not generated, other medicaments will not be consumed in production process, so as to reduce production cost.
Claims (4)
1. a kind of device of method treatment of acidic wastewater using concentration stripping, by evaporation concentration system and stripping condenser system group
Into, which is characterized in that the evaporation concentration system include tetrafluoro heat exchange condensers, horizontal tank, silicon carbide falling film evaporation tower,
Silicon carbide preheater, the first gas-liquid separator, feed pump, forced circulation pump and vapour compression machine are set in the horizontal tank
There is electric heating equipment；The tetrafluoro heat exchange condensers, silicon carbide falling film evaporation tower, silicon carbide preheater are pipe shell type heat exchange
Device, tetrafluoro heat exchange condensers tube side import are connected with feed pump, tetrafluoro heat exchange condensers tube side outlet to horizontal tank
It is interior；Inside the inlet communication road horizontal tank of first gas-liquid separator, the first gas-liquid separator device outlet to steaming
Vapour compressor；The forced circulation pump is communicated to horizontal tank bottom, and the outlet of forced circulation pump is divided into two, and one logical
It crosses valve and is communicated to stripping condenser system, in addition one is communicated to by valve in silicon carbide preheater import；The carbonization
The outlet of silicon preheater is to the import of silicon carbide falling film evaporation tower, the outlet of silicon carbide falling film evaporation tower to horizontal storage
In tank；The vapour compression machine outlet is divided into two, the import of a shell side for being communicated to silicon carbide falling film evaporation tower, separately
An outer import for being communicated to silicon carbide preheater shell side；The outlet of the shell side of silicon carbide falling film evaporation tower and silicon carbide preheater
The outlet of shell side is communicated to tetrafluoro heat exchange condensers shell side import jointly；The outlet of tetrafluoro heat exchange condensers shell side to distillation
Water storage tank；The stripping condenser system includes stripping tower, the second gas-liquid separator, cooling tower and condenser, the stripping
Stripping air hose is equipped in tower, the inlet end of stripping air hose is equipped with electric heater；The second gas-liquid separator import
Inside communication channel stripping tower, outlet be connected with the import of condenser；Condenser bottom is exported equipped with acid solution, is also set on condenser
There is a cooling jacket, the outlet road cooling tower top of the coolant in cooling jacket, the import of the coolant in cooling jacket
Cooling tower bottom is communicated to by water pump；The stripping tower bottom is additionally provided with discharge nozzle, and residing discharge nozzle passes through Pump for giving-out
It is communicated to concentrated sulfuric acid storage tank；The outlet for being communicated to the forced circulation pump of stripping condenser system is connected with stripping tower.
2. a kind of device of method treatment of acidic wastewater using concentration stripping according to claim 1, which is characterized in that
The vapour compression machine is lining tetrafluoro Roots's vapour compression machine.
3. a kind of device of method treatment of acidic wastewater using concentration stripping according to claim 1, which is characterized in that
The power of the electric heating equipment is 30-60KW.
4. a kind of device of method treatment of acidic wastewater using concentration stripping according to claim 1, which is characterized in that
The condensing tower is tube shell type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427904.8U CN207581401U (en) | 2017-10-31 | 2017-10-31 | A kind of device of method treatment of acidic wastewater using concentration stripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427904.8U CN207581401U (en) | 2017-10-31 | 2017-10-31 | A kind of device of method treatment of acidic wastewater using concentration stripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207581401U true CN207581401U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721427904.8U Withdrawn - After Issue CN207581401U (en) | 2017-10-31 | 2017-10-31 | A kind of device of method treatment of acidic wastewater using concentration stripping |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321193A (en) * | 2021-08-03 | 2021-08-31 | 清大国华环境集团股份有限公司 | Method for recovering nitric acid from nitric acid waste liquid |
-
2017
- 2017-10-31 CN CN201721427904.8U patent/CN207581401U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321193A (en) * | 2021-08-03 | 2021-08-31 | 清大国华环境集团股份有限公司 | Method for recovering nitric acid from nitric acid waste liquid |
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Granted publication date: 20180706 Effective date of abandoning: 20230830 |
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