CN101716457A - Method for treating calcination fume and vanadium-deposition waste water in vanadium extracting production - Google Patents
Method for treating calcination fume and vanadium-deposition waste water in vanadium extracting production Download PDFInfo
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- CN101716457A CN101716457A CN200910273471A CN200910273471A CN101716457A CN 101716457 A CN101716457 A CN 101716457A CN 200910273471 A CN200910273471 A CN 200910273471A CN 200910273471 A CN200910273471 A CN 200910273471A CN 101716457 A CN101716457 A CN 101716457A
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Abstract
The invention provides a method for treating calcination fume and vanadium-deposition waste water in vanadium extracting production, which comprises the following four steps: wet dust removal, alkaline process dechlorination, crystallization by evaporation and ammonia desulfurization. The four steps are realized by utilizing a compound purification tower, thereby solving the problems that the prior vanadium extracting technology often treats the calcination fume by direct discharge or simple treating facilities, can only catch large-grain dust, and can not effectively absorb chlorine, chlorine hydride, sulfur dioxide and other noxious gases so as to cause serious pollution, the exhaust gas can not be discharged according to the standard, and the vanadium-deposition waste water can not be treated.
Description
Technical field
The present invention relates to vanadium extraction produce in the comprehensive treatment technique of baking flue gas and vanadium wastewater.
Background technology
Existing vanadium extraction industry adopts in line or simple and easy treatment facility to baking flue gas, can only capture big dust particle, can not effectively absorb pernicious gases such as chlorine, hydrogen chloride, sulfur dioxide, pollutes greatly, and waste gas can not qualified discharge, and vanadium wastewater can't be handled.
Summary of the invention
In order to solve existing vanadium extraction industry to the in line or simple and easy treatment facility of the many employings of baking flue gas, can only capture big dust particle, can not effectively absorb pernicious gases such as chlorine, hydrogen chloride, sulfur dioxide, pollute big, waste gas can not qualified discharge, and the problem that can't handle of vanadium wastewater, the present invention propose a kind of vanadium extraction produce in the processing method of baking flue gas and vanadium wastewater.
Technical scheme of the present invention is: the processing method of baking flue gas and vanadium wastewater during vanadium extraction is produced, it is characterized in that: comprise wet dust removal, alkaline process dechlorination, evaporative crystallization, 4 steps of the ammonia process of desulfurization, these 4 steps utilize the composite purification tower to realize, the composite purification tower, comprise the chimney of giving vent to anger, last tower body, gas-liquid separator, spiral deflector, following tower body, air inlet, spray equipment, vacuum filtration device, alkali liquid tank, vanadium wastewater jar composition, the chimney of giving vent to anger is welded on the tower body; Last tower body top is cone, and the bottom is a cylinder, and riveted joint has gas-liquid separator in the cone, cylinder middle and lower part welding spiral deflector; Last tower body is connected by flange with following tower body; Air inlet is welded on down the top tangential direction of tower body, and 20 ° of angles have a down dip; Following tower body top and following tower body bottom are established spray equipment No. one time, external vanadium wastewater jar and alkali liquid tank; The secondary spraying device is established in last tower body middle and upper part, external vacuum filtration device, and connect the vanadium wastewater jar; Use the Plastic Steel Pipe thermal weld between shower and pump and the fluid reservoir, fix with the glass tube flange with reservation socket on the tower body; Flue gas enters the purifying column lower body from the counterclockwise tangent line of air inlet, and the vanadium wastewater by the one-level spray equipment of storing in 20 ° the rotation of spiral deflector and inner ring ancient piece of jade, round, flat and with a hole in its centre water conservancy diversion backspin tangent line and the following tower body of respectively having a down dip contacts; Because liquid wave shape wave turn in the pneumatic power effect, tower, flue gas fully contacts with liquid, in the crude particle dust in the flue gas sinks liquid along a tower ancient piece of jade, round, flat and with a hole in its centre rapidly owing to centrifugal action and by the liquid-soaked parcel; Cl in the flue gas
2, HCl, SO
2The pernicious gas aquation and with liquid in the NaOH neutralization that pumps into by alkali liquid tank; The rising of the flue gas of tower body enters in the tower body under going out, and last tower body middle part is provided with the disconnected shape spiral deflector of three interlayers, and air-flow is still done the rotation rising, and the liquid on the deflector is flowed atomizing, and under the effect of one-level spray, the dust of catching at large is collected simultaneously.And owing to atomizing and spray effect, the flowing fluid ratio surface area increases, and prolongs with the raising of flue gas contact area, time of contact, and the pernicious gas in the flue gas further is neutralized, absorbs formation salt and brought into down in the tower body by liquid; The one-level spray liquid is with the aqueous solution of precipitation vanadium wastewater and NaOH; The flue gas that continue to rise contacts with the atomized liquid that the secondary spray equipment sprays in last tower body middle and upper part, and the dust that a small amount of pernicious gas that wherein contains and Ta Nei secondary are kicked up is captured once more, absorption is after gas-liquid separation device is isolated most of moisture is effluxed by flue again; Cl in the discharged gas fume
2, HCl, SO
2Pernicious gas and dust control in the standard limited value fully, realize qualified discharge.
Principle of the present invention is: mainly be water and NH in the vanadium wastewater
4Cl, NaOH energy and NH
4The Cl reaction generates NaCl+NH
3.H
2O, ammoniacal liquor are beneficial to desulfurization (SO
2+ H
2O+xNH
3→ xSO
3, x=1.2-1.4), simultaneously, NaOH can also absorption portion CO
2The salts substances (mainly being carbonate, sulfate and sodium salt) that neutralization, absorption back form is emitted in the tower body bottom, can turn back to burden process after vacuum filtration, and the water that filters the back cleaning is used for circulated sprinkling, also can turn back to burden process and make the batching supplementing water.The gas approach temperature is at 200 ℃-295 ℃, and vanadium wastewater in the evaporated and purified tower effectively solves vanadium wastewater and handles problems in a large number.The chemically treated key reaction formula of pernicious gas is in the flue gas:
Cl
2+H
2O→HClO+HCl
Cl
2+NaOH→NaClO+NaCl+H
2O
HCl+NaOH→NaCl+H
2O
SO
2+H
2O+xNH
3→(NH
4)xH-HSO
3
NaOH+NH
4Cl→NaCl+NH
3.H
2O
NaOH+CO
2→ Na
2CO
3+ H
2O (CO
2On a small quantity)
NaOH+CO
2→ NaHCO
3(CO
2Excessive)
According to above principle, shaft kiln baking flue gas qualified discharge of the present invention; The evaporation vanadium wastewater does not efflux factory effluent; Filter residue is recycled.Solved existing vanadium extraction industry to the in line or simple and easy treatment facility of the many employings of baking flue gas, can only capture big dust particle, can not effectively absorb pernicious gases such as chlorine, hydrogen chloride, sulfur dioxide, pollute big, waste gas can not qualified discharge, and the problem that can't handle of vanadium wastewater.Make the baking flue gas capture rate more than 98%, chlorine gas concentration 35.56mg/Nm in the discharged gas fume
3, hydrogen cloride concentration 21.38mg/Nm
3, sulfur dioxide concentration 302.26mg/Nm
3, dust concentration 14.95mg/Nm
3
Description of drawings
Fig. 1 is the structural representation of composite purification tower among the present invention.
The specific embodiment
The processing method of baking flue gas and vanadium wastewater during vanadium extraction is produced, comprise wet dust removal, alkaline process dechlorination, evaporative crystallization, 4 steps of the ammonia process of desulfurization, these 4 steps utilize composite purification tower (as Fig. 1) to realize, the composite purification tower, comprise the chimney 1 of giving vent to anger, go up tower body 2, gas-liquid separator 3, spiral deflector 4, tower body 5, air inlet 6, spray equipment 7 and 12, vacuum filtration device 8, alkali liquid tank 9, vanadium wastewater jar 10 are formed down, it is characterized in that: the chimney 1 of giving vent to anger is welded on the tower body 2; Last tower body 2 tops are cone, and the bottom is a cylinder, and riveted joint has gas-liquid separator 3 in the cone, cylinder middle and lower part welding spiral deflector 4; Last tower body 2 is connected by flange 11 with following tower body 5; Air inlet 6 is welded on down the top tangential direction of tower body 5, and 20 ° of angles have a down dip; Following tower body 5 tops and following tower body 2 bottoms are established spray equipment 7 No. one time, external vanadium wastewater jar 10 and alkali liquid tank 9; Secondary spraying device 12 is established in last tower body 2 middle and upper parts, external vacuum filtration device 8, and connect vanadium wastewater jar 10; , fixing by fiberglass flange 16 between shower 13 and the fluid reservoir 14 with reservation socket on the tower body with Plastic Steel Pipe 15 thermal welds.Flue gas enters purifying column lower body 5 from air inlet 6 counterclockwise tangent lines, and the vanadium wastewater by one-level spray equipment 7 pump people of storing in 20 ° the rotation of spiral deflector 4 and inner ring wall water conservancy diversion backspin tangent line and the following tower body 5 of respectively having a down dip contacts.Because liquid wave shape wave turn in the pneumatic power effect, tower, flue gas fully contacts with liquid, in the crude particle dust in the flue gas sinks liquid along the tower wall rapidly owing to centrifugal action and by the liquid-soaked parcel.Cl in the flue gas
2, HCl, SO
2The pernicious gas aquation and with liquid in the NaOH alkaline matter neutralization that pumps into by alkali liquid tank 9.The rising of the flue gas of tower body enters in the tower body under going out, and last tower body middle part is provided with the disconnected shape spiral deflector 4 of three interlayers, and air-flow is still done the rotation rising, and the liquid on the deflector is flowed atomizing, and under the effect of one-level spray equipment 7, the dust of catching at large is collected simultaneously.And owing to atomizing and spray effect, the flowing fluid ratio surface area increases, and prolongs with the raising of flue gas contact area, time of contact, and the pernicious gas in the flue gas further is neutralized, absorbs formation salt and brought into down in the tower body by liquid.The one-level spray liquid is based on vanadium wastewater and NaOH solution.The flue gas that continue to rise contacts with the atomized liquid that secondary spray equipment 12 sprays in last tower body middle and upper part, and the dust that a small amount of pernicious gas that wherein contains and Ta Nei secondary are kicked up is captured once more, absorption is after gas-liquid separation device is isolated most of moisture is effluxed by flue again.Cl in the discharged gas fume
2, HCl, SO
2Pernicious gas and dust control in the standard limited value fully, realize qualified discharge. Flue gas enters the purifying column lower body from the counterclockwise tangent line of air inlet, and the vanadium wastewater by the one-level spray equipment of storing in 20 ° the rotation of spiral deflector and inner ring ancient piece of jade, round, flat and with a hole in its centre water conservancy diversion backspin tangent line and the following tower body of respectively having a down dip contacts; Because liquid wave shape wave turn in the pneumatic power effect, tower, flue gas fully contacts with liquid, in the crude particle dust in the flue gas sinks liquid along a tower ancient piece of jade, round, flat and with a hole in its centre rapidly owing to centrifugal action and by the liquid-soaked parcel; Cl in the flue gas
2, HCl, SO
2The pernicious gas aquation and with liquid in the NaOH neutralization that pumps into by alkali liquid tank; The rising of the flue gas of tower body enters in the tower body under going out, and last tower body middle part is provided with the disconnected shape spiral deflector of three interlayers, and air-flow is still done the rotation rising, and the liquid on the deflector is flowed atomizing, and under the effect of one-level spray, the dust of catching at large is collected simultaneously.And owing to atomizing and spray effect, the flowing fluid ratio surface area increases, and prolongs with the raising of flue gas contact area, time of contact, and the pernicious gas in the flue gas further is neutralized, absorbs formation salt and brought into down in the tower body by liquid; The one-level spray liquid is with the aqueous solution of precipitation vanadium wastewater and NaOH; The flue gas that continue to rise contacts with the atomized liquid that the secondary spray equipment sprays in last tower body middle and upper part, and the dust that a small amount of pernicious gas that wherein contains and Ta Nei secondary are kicked up is captured once more, absorption is after gas-liquid separation device is isolated most of moisture is effluxed by flue again; Cl in the discharged gas fume
2, HCl, SO
2Pernicious gas and dust control in the standard limited value fully, realize qualified discharge.
Principle of the present invention is: mainly be water and NH in the vanadium wastewater
4Cl, NaOH energy and NH
4The Cl reaction generates NaCl+NH
3.H
2O, ammoniacal liquor are beneficial to desulfurization (SO
2+ H
2O+xNH
3→ xSO
3, x=1.2-1.4), simultaneously, NaOH can also absorption portion CO
2The salts substances (mainly being carbonate, sulfate and sodium salt) that neutralization, absorption back form is emitted in the tower body bottom, can turn back to burden process after vacuum filtration, and the water that filters the back cleaning is used for circulated sprinkling, also can turn back to burden process and make the batching supplementing water.The gas approach temperature is at 200 ℃-295 ℃, and vanadium wastewater in the evaporated and purified tower effectively solves vanadium wastewater and handles problems in a large number.The chemically treated key reaction formula of pernicious gas is in the flue gas:
Cl
2+H
2O→HClO+HCl
Cl
2+NaOH→NaClO+NaCl+H
2O
HCl+NaOH→NaCl+H
2O
SO
2+H
2O+xNH
3→(NH
4)xH-HSO
3
NaOH+NH
4Cl→NaCl+NH
3.H
2O
NaOH+CO
2→ Na
2CO
3+ H
2O (CO
2On a small quantity)
NaOH+CO
2→ NaHCO
3(CO
2Excessive)
According to above principle, shaft kiln baking flue gas qualified discharge of the present invention; The evaporation vanadium wastewater does not efflux factory effluent; Filter residue is recycled.Solved existing vanadium extraction industry to the in line or simple and easy treatment facility of the many employings of baking flue gas, can only capture big dust particle, can not effectively absorb pernicious gases such as chlorine, hydrogen chloride, sulfur dioxide, pollute big, waste gas can not qualified discharge, and the problem that can't handle of vanadium wastewater.Make the baking flue gas capture rate more than 98%, chlorine gas concentration 35.56mg/Nm in the discharged gas fume
3, hydrogen cloride concentration 21.38mg/Nm
3, sulfur dioxide concentration 302.26mg/Nm
3, dust concentration 14.95mg/Nm
3
Claims (1)
1. the processing method of baking flue gas and vanadium wastewater during vanadium extraction is produced, it is characterized in that:: comprise wet dust removal, alkaline process dechlorination, evaporative crystallization, 4 steps of the ammonia process of desulfurization, these 4 steps utilize the composite purification tower to realize, the composite purification tower, comprise the chimney of giving vent to anger, last tower body, gas-liquid separator, spiral deflector, following tower body, air inlet, spray equipment, vacuum filtration device, alkali liquid tank, vanadium wastewater jar composition, the chimney of giving vent to anger is welded on the tower body; Last tower body top is cone, and the bottom is a cylinder, and riveted joint has gas-liquid separator in the cone, cylinder middle and lower part welding spiral deflector; Last tower body is connected by flange with following tower body; Air inlet is welded on down the top tangential direction of tower body, and 20 ° of angles have a down dip; Following tower body top and following tower body bottom are established spray equipment No. one time, external vanadium wastewater jar and alkali liquid tank; The secondary spraying device is established in last tower body middle and upper part, external vacuum filtration device, and connect the vanadium wastewater jar; Use the Plastic Steel Pipe thermal weld between shower and pump and the fluid reservoir, fix with the glass tube flange with reservation socket on the tower body; Flue gas enters the purifying column lower body from the counterclockwise tangent line of air inlet, and the vanadium wastewater by the one-level spray equipment of storing in 20 ° the rotation of spiral deflector and inner ring ancient piece of jade, round, flat and with a hole in its centre water conservancy diversion backspin tangent line and the following tower body of respectively having a down dip contacts; Because liquid wave shape wave turn in the pneumatic power effect, tower, flue gas fully contacts with liquid, in the crude particle dust in the flue gas sinks liquid along a tower ancient piece of jade, round, flat and with a hole in its centre rapidly owing to centrifugal action and by the liquid-soaked parcel; Cl in the flue gas
2, HCl, SO
2The pernicious gas aquation and with liquid in the NaOH neutralization that pumps into by alkali liquid tank; The rising of the flue gas of tower body enters in the tower body under going out, and last tower body middle part is provided with the disconnected shape spiral deflector of three interlayers, and air-flow is still done the rotation rising, and the liquid on the deflector is flowed atomizing, and under the effect of one-level spray, the dust of catching at large is collected simultaneously.And owing to atomizing and spray effect, the flowing fluid ratio surface area increases, and prolongs with the raising of flue gas contact area, time of contact, and the pernicious gas in the flue gas further is neutralized, absorbs formation salt and brought into down in the tower body by liquid; The one-level spray liquid is with the aqueous solution of precipitation vanadium wastewater and NaOH; The flue gas that continue to rise contacts with the atomized liquid that the secondary spray equipment sprays in last tower body middle and upper part, and the dust that a small amount of pernicious gas that wherein contains and Ta Nei secondary are kicked up is captured once more, absorption is after gas-liquid separation device is isolated most of moisture is effluxed by flue again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910273471A CN101716457A (en) | 2009-12-30 | 2009-12-30 | Method for treating calcination fume and vanadium-deposition waste water in vanadium extracting production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910273471A CN101716457A (en) | 2009-12-30 | 2009-12-30 | Method for treating calcination fume and vanadium-deposition waste water in vanadium extracting production |
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| Publication Number | Publication Date |
|---|---|
| CN101716457A true CN101716457A (en) | 2010-06-02 |
Family
ID=42431151
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910273471A Pending CN101716457A (en) | 2009-12-30 | 2009-12-30 | Method for treating calcination fume and vanadium-deposition waste water in vanadium extracting production |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173474A (en) * | 2011-03-25 | 2011-09-07 | 东南大学 | Device for prolonging retention time of liquid drops in desulfurization wastewater evaporator |
| CN103205574A (en) * | 2012-01-17 | 2013-07-17 | 四川格瑞化工科技发展有限公司 | Comprehensive control and utilization method of vanadium precipitation waste water and kiln and furnace flue gas |
| CN103276195A (en) * | 2013-05-08 | 2013-09-04 | 北京神雾环境能源科技集团股份有限公司 | Stone coal vanadium ore shaft roasting method and system |
| CN112811660A (en) * | 2021-01-05 | 2021-05-18 | 长沙有色冶金设计研究院有限公司 | Treatment process for waste gas and alum precipitation wastewater generated in integration of stone coal navajoite and navajoite |
-
2009
- 2009-12-30 CN CN200910273471A patent/CN101716457A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173474A (en) * | 2011-03-25 | 2011-09-07 | 东南大学 | Device for prolonging retention time of liquid drops in desulfurization wastewater evaporator |
| CN102173474B (en) * | 2011-03-25 | 2013-06-05 | 东南大学 | Device for prolonging retention time of liquid drops in desulfurization wastewater evaporator |
| CN103205574A (en) * | 2012-01-17 | 2013-07-17 | 四川格瑞化工科技发展有限公司 | Comprehensive control and utilization method of vanadium precipitation waste water and kiln and furnace flue gas |
| CN103276195A (en) * | 2013-05-08 | 2013-09-04 | 北京神雾环境能源科技集团股份有限公司 | Stone coal vanadium ore shaft roasting method and system |
| CN103276195B (en) * | 2013-05-08 | 2015-07-01 | 北京神雾环境能源科技集团股份有限公司 | Stone coal vanadium ore shaft roasting method and system |
| CN112811660A (en) * | 2021-01-05 | 2021-05-18 | 长沙有色冶金设计研究院有限公司 | Treatment process for waste gas and alum precipitation wastewater generated in integration of stone coal navajoite and navajoite |
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Open date: 20100602 |