CN101530737A - Method for processing waste water/gas from tungsten smelting and a device thereof - Google Patents
Method for processing waste water/gas from tungsten smelting and a device thereof Download PDFInfo
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- CN101530737A CN101530737A CN200910111195A CN200910111195A CN101530737A CN 101530737 A CN101530737 A CN 101530737A CN 200910111195 A CN200910111195 A CN 200910111195A CN 200910111195 A CN200910111195 A CN 200910111195A CN 101530737 A CN101530737 A CN 101530737A
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Abstract
The invention relates to a method for processing waste water/gas from tungsten smelting and a device thereof. The method is to directly implement the processing of the waste water/gas by utilizing alkali waste water, which is generated by extracting ammonium tungstate from tungsten ores by an ion exchange method, and by utilizing smoke gas generated by a boiler furnace, and the method comprises the following steps of: cyclone dust removal, spray dust removal, desulfurization, deamination, controlling the temperature of the primarily dust-removed smoke gas of the boiler furnace in a range from 140-200 DEG C, diffusing from bottom to top the air quantity of 13000-18000 m<3>/H and controlling the flow quantity from top to bottom in a range from 13-15 m<3>H, spraying the alkali waste water for exchange absorption for removing fine particle dusts and SO2 in the smoke gas and free ammonia in the alkali waste water, exhausting net gas after the spraying absorption to the air and discharging purified water after deposition; the device for realizing the method for processing waste water/gas from tungsten smelting comprises; a water pump, a multitubular cyclone dust extractor, a dust-removing desulfurization deamination nitrogen column and a water processing pond. The invention has the advantages of simple technological steps, small investment of the device, easy operation, low processing cost and primary standard exhaust of the waste water/gas.
Description
One. technical field
The present invention relates to metallurgical technology field, especially a kind of method for processing waste water/gas from tungsten smelting and device thereof.
Two. background technology
In recent years, along with country to the attention of environmental protection work and the reinforcement of national environmental protection code enforcement dynamics, follow cleaner production, the principle of pollutant qualified discharge and overall control promotes disposal of three wastes level comprehensively, really realizes energy-saving and emission-reduction, cleaner production.The production technology major part of present domestic APT (ammonium paratungstate English is write a Chinese character in simplified form) is an ion-exchange process, because in the waste water that the APT ion-exchange is produced, ammonia content reaches 400mg/l, pH value 12-13 belongs to the high concentration alkali wastewater, SO in the boiler smoke
2Content reaches 1350mg/m
3National grade one discharge standard requires: ammonia content≤15mg/l in the waste water; SO in the waste gas
2Content≤1200mg/m
3Smoke content≤250mg/m
3At present domestic waste water and the waste gas that production APT is produced generally adopts the way of separately handling, and the ammonia in the waste water adopts mechanical aeration+stripping tower to remove the SO in the boiler smoke
2Adopt water film dedusting tower to remove with dust.Need heating with stripping tower, the consumption coal; Remove SO in the boiler smoke with water film dedusting tower
2And dust, need to consume a large amount of water.To reach the needed environmental protection treatment cost of discharge standard higher so exist for, energy consumption height, the SO in the flue gas
2Treatment effect is not good, has restricted the development of environment protection treating technology to a certain extent.At home and abroad there is no the technology that desulfurization and dedusting simultaneously removes ammonia at present, therefore seek environment-friendly treatment method and equipment that a kind of APT of comprehensive utilization factory effluent and boiler smoke combine and seem particularly urgent and important.
Three. summary of the invention
The object of the present invention is to provide a kind of method for processing waste water/gas from tungsten smelting and device thereof, promptly reach environmental requirement, the purpose that reach energy-saving and cost-reducing again, reduces cost.
For reaching this purpose, the present invention mainly finishes in the following way:
Method for processing waste water/gas from tungsten smelting is to utilize ion-exchange to carry out the waste water and gas processing from the alkaline sewage of tungsten ore refinement para-tungstic acid amine generation and the flue gas of boiler generation, comprises the following steps:
A. cyclone dust removal is carried out cyclone dust removal earlier with boiler smoke, to remove crude particle dust;
B. spraying and dedusting desulfurization deamination is controlled at 140～200 ℃, air quantity 13000～18000m with the boiler smoke temperature behind the one-time dedusting
3/ H spread from bottom to top and with flow-control from the top down at 13～15m
3The absorption of/H spray alkaline sewage is to remove particle dust, the SO in the flue gas
2With the free ammonia in the alkaline sewage, the pure qi (oxygen) after the spray absorption is to airborne release, the discharging of water purification post precipitation.
This method further comprises:
Precipitation purifies, and makes its natural sedimentation, the water purification discharging after the waste water after the spray absorption further being handled heavy metal such as lead.
Be used to realize the device of method for processing waste water/gas from tungsten smelting, this device comprises:
A water pump, its water inlet insert and refine interior, the delivery port pipeline connection dust-removal and desulfurizing ammonia nitrogen removal top of tower of cesspool that para-tungstic acid amine produces alkaline sewage, and described water pump is used for carrying alkaline sewage;
A multicyclone, its air inlet pipeline connect boiler chimney, the air outlet pipeline connects boiler induced-draft fan and connects dust-removal and desulfurizing ammonia nitrogen removal tower bottom again, and described multicyclone is used for the flue gas primary dust removing;
A dust-removal and desulfurizing ammonia nitrogen removal tower, its top is provided with two mouths, one of them mouthful pipeline connects pump outlet, introducing alkaline sewage sprays downwards, another mouthful pipeline connects boiler chimney, with the pure qi (oxygen) after the spray absorption to airborne release, the bottom also is provided with two mouths, one of them mouthful pipeline connects the boiler induced-draft fan air outlet, the flue gas that introducing makes progress behind primary dust removing, another mouthful pipeline leads directly to water treating pond, the waste water after the absorption of discharging spray, described dust-removal and desulfurizing ammonia nitrogen removal tower is used for making alkaline sewage spray smoke treatment, and SO in the flue gas is removed in absorption
2, the free ammonia in dust and the waste water;
A water treating pond, described water treating pond are used for accepting the sewage after dust-removal and desulfurizing ammonia nitrogen removal tower is handled, the discharging of post precipitation water purification.
After testing, by this method and the ammonia content≤15mg/l, the SO that install in processing back water purification and the pure qi (oxygen)
2Content≤1200mg/m
3, smoke content≤250mg/m
3, reach national grade one discharge standard.
Advantage of the present invention:
1. utilize the waste heat of boiler smoke, saved the consumption of coal.
2. utilize the APT ion to change SO in the direct smoke treatment of alkaline waste water of explained hereafter
2And flue dust, also saved great lot of water resources.
3. processing step is brief, plant investment is few, easy operating, processing cost are low.
4. one-level qualified discharge after the sewage exhaust-gas treatment.
Four. description of drawings
Fig. 1 is according to method for processing waste water/gas from tungsten smelting schematic diagram provided by the invention.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Five. the specific embodiment
As shown in Figure 1, method for processing waste water/gas from tungsten smelting is to utilize ion-exchange directly to carry out the sewage exhaust-gas treatment from the alkaline sewage of tungsten ore refinement para-tungstic acid amine generation and the flue gas of boiler generation, comprises the following steps:
A. cyclone dust removal is carried out cyclone dust removal earlier with boiler smoke, to remove crude particle dust;
B. spraying and dedusting desulfurization deamination is controlled at 140～200 ℃, air quantity 13000～18000m with the boiler smoke temperature behind the one-time dedusting
3/ H spread from bottom to top and with flow-control from the top down at 13～15m
3The absorption of/H spray alkaline sewage is to remove particle dust, the SO in the flue gas
2With the free ammonia in the alkaline sewage, the pure qi (oxygen) after the spray absorption is to airborne release, the discharging of water purification post precipitation.
This method further comprises:
Precipitation purifies, and makes its natural sedimentation, the water purification discharging after the waste water after the spray absorption further being handled heavy metal such as lead.
Be used to realize the device of method for processing waste water/gas from tungsten smelting, this device comprises:
A water pump, its water inlet insert and refine interior, the delivery port pipeline connection dust-removal and desulfurizing ammonia nitrogen removal top of tower of wastewater disposal basin that para-tungstic acid amine produces alkaline sewage, and described water pump is used for carrying alkaline sewage;
A multicyclone, its air inlet pipeline connect boiler chimney, the air outlet pipeline connects boiler induced-draft fan and connects dust-removal and desulfurizing ammonia nitrogen removal tower bottom again, and described multicyclone is used for the flue gas primary dust removing;
A dust-removal and desulfurizing ammonia nitrogen removal tower, its top is provided with two mouths, one of them mouthful pipeline connects pump outlet, introducing alkaline sewage sprays downwards, another mouthful pipeline connects boiler chimney, with the pure qi (oxygen) after the spray absorption to airborne release, the bottom also is provided with two mouths, one of them mouthful pipeline connects the boiler induced-draft fan air outlet, the flue gas that introducing makes progress behind primary dust removing, another mouthful pipeline leads directly to water treating pond, the waste water after the absorption of discharging spray, described dust-removal and desulfurizing ammonia nitrogen removal tower is used for making alkaline sewage spray smoke treatment, and SO in the flue gas is removed in absorption
2, the free ammonia in dust and the alkaline sewage;
A water treating pond, described water treating pond are used for accepting the sewage after dust-removal and desulfurizing ammonia nitrogen removal tower is handled, the discharging of post precipitation water purification.
This device further comprises: fill ceramic packing in dust-removal and desulfurizing ammonia nitrogen removal tower, to reach better stripping effect.
Example one
Be that 12-13, ammonia content are discharged in the alkaline waste water pond for the 385g/l alkaline waste water, with water pump the top of waste water from the dust-removal and desulfurizing deammoniation tower added again that wastewater flow is controlled at 13-15m to the pH value of ion-exchange process APT production line earlier
3/ H.By air-introduced machine boiler smoke is extracted out from boiler, flue gas is sent into from the bottom of dust-removal and desulfurizing deammoniation tower after removing crude particle dust through multicyclone earlier, and flue-gas temperature 160-200 ℃, air quantity is controlled at 13000-15000m
3/ H, in the dust-removal and desulfurizing deammoniation tower, flue gas portion's diffusion from lower to upper, waste water portion from top to bottom sprays, gas by spray absorption is discharged by boiler chimney from the top of dust-removal and desulfurizing deammoniation tower, and liquid enters the post precipitation discharging of effluent cycle pond from the bottom of dust-removal and desulfurizing deammoniation tower.After testing: the water ammonia content 12mg/l of discharging, the gas SO of discharging
2Content 322mg/m
3, smoke content 81mg/m
3, reach the national grade one discharge standard requirement.
Embodiment two
Processing step, device are identical with embodiment one, and just alkaline waste water ammonia content and flow, flue-gas temperature are different with four kinds of parameters of air quantity, and promptly alkaline waste water pH value 12-13, ammonia content are that 395g/l, alkaline waste water flow-control are at 15-16m
3/ H; Flue-gas temperature is controlled at 140-160 ℃, air quantity and is controlled at 15000-18000m
3/ H.After testing: the water ammonia content 11mg/l of discharging, the gas SO of discharging
2Content 400mg/m
3, smoke content: 90mg/m
3, reach the national grade one discharge standard requirement.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (4)
1. method for processing waste water/gas from tungsten smelting is to utilize ion-exchange directly to carry out the sewage exhaust-gas treatment from the alkaline sewage of tungsten ore refinement ammonium paratungstate generation and the flue gas of boiler generation, comprises the following steps:
A. cyclone dust removal is carried out cyclone dust removal earlier with boiler smoke, to remove crude particle dust;
B. spraying and dedusting desulfurization deamination is controlled at 140～200 ℃, air quantity 13000～18000m with the boiler smoke temperature behind the one-time dedusting
3/ H spread from bottom to top and with flow-control from the top down at 13～15m
3/ H spray alkaline sewage exchange absorption is to remove particle dust, the SO in the flue gas
2With the free ammonia in the alkaline sewage, the pure qi (oxygen) after the spray absorption is to airborne release, the discharging of water purification post precipitation.
2. method for processing waste water/gas from tungsten smelting according to claim 1, this method further comprises:
Precipitation purifies, and makes its natural sedimentation, the water purification discharging after the sewage after the spray absorption further being handled heavy metal such as lead.
3. be used to realize the device of method for processing waste water/gas from tungsten smelting, this device comprises:
A water pump, its water inlet insert and refine interior, the delivery port pipeline connection dust-removal and desulfurizing ammonia nitrogen removal top of tower of cesspool that ammonium paratungstate produces alkaline sewage, and described water pump is used for carrying alkaline sewage;
A multicyclone, its air inlet pipeline connect boiler chimney, the air outlet pipeline connects boiler induced-draft fan and connects dust-removal and desulfurizing ammonia nitrogen removal tower bottom again, and described multicyclone is used for the flue gas primary dust removing;
A dust-removal and desulfurizing ammonia nitrogen removal tower, its top is provided with two mouths, one of them mouthful pipeline connects pump outlet, introducing alkaline sewage sprays downwards, another mouthful pipeline connects boiler chimney, with the pure qi (oxygen) after the spray absorption to airborne release, the bottom also is provided with two mouths, one of them mouthful pipeline connects the boiler induced-draft fan air outlet, the flue gas that introducing makes progress behind primary dust removing, another mouthful pipeline leads directly to water treating pond, the waste water after the adsorption precipitation of discharging spray, described dust-removal and desulfurizing ammonia nitrogen removal tower is used for making waste water spray smoke treatment, and SO in the flue gas is removed in absorption
2, the free ammonia in dust and the alkaline sewage;
A water treating pond, described water treating pond are used for accepting the sewage after dust-removal and desulfurizing ammonia nitrogen removal tower is handled, the discharging of post precipitation water purification.
4. the device of method for processing waste water/gas from tungsten smelting according to claim 3, this device further comprises:
In dust-removal and desulfurizing ammonia nitrogen removal tower, fill ceramic packing, to reach better stripping effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910111195A CN101530737A (en) | 2009-03-03 | 2009-03-03 | Method for processing waste water/gas from tungsten smelting and a device thereof |
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| CN200910111195A CN101530737A (en) | 2009-03-03 | 2009-03-03 | Method for processing waste water/gas from tungsten smelting and a device thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862584A (en) * | 2010-06-24 | 2010-10-20 | 四川泸天化股份有限公司 | Novel process for comprehensive treatment of ammonium nitrate wastewater and flue gas |
| CN102161520A (en) * | 2011-04-08 | 2011-08-24 | 江西稀有金属钨业控股集团有限公司 | Device for processing tungsten smelting smoke and ion exchange waste water and processing method thereof |
| CN103785263A (en) * | 2014-02-14 | 2014-05-14 | 赣州华茂钨材料有限公司 | Ammonia-containing tail gas treatment recycling method |
| CN104944644A (en) * | 2015-06-29 | 2015-09-30 | 江西稀有稀土金属钨业集团有限公司 | Comprehensive treatment method for tungsten smelting wastewater |
| CN106178812A (en) * | 2016-06-28 | 2016-12-07 | 安徽华翼金属集团有限公司 | During secondary aluminium is smelted, dust flue gas high-efficiency environment friendly processes technique |
| CN107174937A (en) * | 2017-07-11 | 2017-09-19 | 宣城新威华化工科技有限公司 | Flue gas desulfurization and dedusting equipment |
| CN108097011A (en) * | 2017-12-20 | 2018-06-01 | 大余县东宏锡制品有限公司 | A kind of industrial waste gas filtration, purification system |
| CN108588418A (en) * | 2018-06-07 | 2018-09-28 | 江西理工大学 | The device and method that divalent recovery of sulfur is born in tungstate solution |
| CN112705002A (en) * | 2021-01-13 | 2021-04-27 | 厦门钨业股份有限公司 | Tail gas treatment method for tungsten ore decomposition |
| CN114772824A (en) * | 2022-04-06 | 2022-07-22 | 许煜 | A waste water waste gas integration treatment facility for environmental protection |
-
2009
- 2009-03-03 CN CN200910111195A patent/CN101530737A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862584A (en) * | 2010-06-24 | 2010-10-20 | 四川泸天化股份有限公司 | Novel process for comprehensive treatment of ammonium nitrate wastewater and flue gas |
| CN101862584B (en) * | 2010-06-24 | 2012-08-22 | 四川泸天化股份有限公司 | Novel process for comprehensive treatment of ammonium nitrate wastewater and flue gas |
| CN102161520A (en) * | 2011-04-08 | 2011-08-24 | 江西稀有金属钨业控股集团有限公司 | Device for processing tungsten smelting smoke and ion exchange waste water and processing method thereof |
| CN102161520B (en) * | 2011-04-08 | 2012-12-26 | 江西稀有金属钨业控股集团有限公司 | Device for processing tungsten smelting smoke and ion exchange waste water and processing method thereof |
| CN103785263B (en) * | 2014-02-14 | 2016-01-20 | 赣州华茂钨材料有限公司 | A kind of method that ammonia vent gas treatment reclaims |
| CN103785263A (en) * | 2014-02-14 | 2014-05-14 | 赣州华茂钨材料有限公司 | Ammonia-containing tail gas treatment recycling method |
| CN104944644A (en) * | 2015-06-29 | 2015-09-30 | 江西稀有稀土金属钨业集团有限公司 | Comprehensive treatment method for tungsten smelting wastewater |
| CN106178812A (en) * | 2016-06-28 | 2016-12-07 | 安徽华翼金属集团有限公司 | During secondary aluminium is smelted, dust flue gas high-efficiency environment friendly processes technique |
| CN107174937A (en) * | 2017-07-11 | 2017-09-19 | 宣城新威华化工科技有限公司 | Flue gas desulfurization and dedusting equipment |
| CN108097011A (en) * | 2017-12-20 | 2018-06-01 | 大余县东宏锡制品有限公司 | A kind of industrial waste gas filtration, purification system |
| CN108588418A (en) * | 2018-06-07 | 2018-09-28 | 江西理工大学 | The device and method that divalent recovery of sulfur is born in tungstate solution |
| CN108588418B (en) * | 2018-06-07 | 2019-07-26 | 江西理工大学 | The device and method of negative divalent recovery of sulfur in tungstate solution |
| CN112705002A (en) * | 2021-01-13 | 2021-04-27 | 厦门钨业股份有限公司 | Tail gas treatment method for tungsten ore decomposition |
| CN114772824A (en) * | 2022-04-06 | 2022-07-22 | 许煜 | A waste water waste gas integration treatment facility for environmental protection |
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Application publication date: 20090916 |