CN209508361U - A kind of production of zinc calcine and smoke processing system - Google Patents
A kind of production of zinc calcine and smoke processing system Download PDFInfo
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- CN209508361U CN209508361U CN201821920416.5U CN201821920416U CN209508361U CN 209508361 U CN209508361 U CN 209508361U CN 201821920416 U CN201821920416 U CN 201821920416U CN 209508361 U CN209508361 U CN 209508361U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
A kind of production of zinc calcine and smoke processing system, including zinc calcine production unit and fume treatment unit, wherein zinc calcine production unit includes rotary kiln, the kiln tail setting feed inlet and exhanst gas outlet of rotary kiln, feeding device is set at its middle charging aperture, and exhanst gas outlet connects fume treatment unit；Fume treatment unit includes sequentially connected expansion chamber and water purification spray column, exhaust outlet and leakage fluid dram are provided on water purification spray column, wherein exhaust outlet is connect by pipeline with lye spray column, the flue gas that exhaust outlet comes out discharges after being handled by lye spray column, leakage fluid dram is sequentially connected stirring pool and sedimentation basin by pipeline, the liquid that leakage fluid dram comes out is carried out entering in sedimentation basin after heavy zinc reacts in stirring pool and be precipitated, and the sludge after precipitating is used by being delivered in the feed inlet after filter press filters pressing as feedstock circulation.The utility model tectonic sieving is reasonable, and large-scale production reduces environmental pollution while providing the zinc metallurgy raw material zinc calcine that quality is stable, rate containing zinc is high.
Description
Technical field
The present invention relates to zinc calcines to produce and process technical field, and in particular to a kind of production of zinc calcine and fume treatment system
System.
Background technique
In recent years, China's one side zinc resource demand gap is very big, on the other hand various largely containing the useless lime-ash of Zn Cr coating
Be directly discharged in environment with the material of dangerous waste containing zinc, cause the energy, resource waste again while can environment cause greatly
It pollutes and destroys, the cost recovery in existing production technology due to these containing Zn scrap returns is high, benefit is low, recovery technology is unqualified,
Utilising zinc containing waste residue can not be recycled on a large scale and is transformed into quality stabilization, using the high zinc metallurgy raw material of degree, and then is solved
Resource gap is reduced while environmental pollution.Flue dust during existing metal and intermediate raw material are in smelting process for production simultaneously
It is larger to discharge environmental pollution, if large-scale production, smoke contamination are bigger.
Summary of the invention
The present invention is directed to be improved to the above problem, provide it is a kind of it is low in the pollution of the environment, product yield is high, productivity effect
High, sweeping zinc calcine production and smoke processing system.
Technical problem solved by the invention is realized using following technical scheme:
A kind of production of zinc calcine and smoke processing system, including zinc calcine production unit and fume treatment unit, wherein
Zinc calcine production unit includes rotary kiln, and rotary kiln includes kiln hood and kiln tail, and discharge port, discharging is arranged in the kiln hood
Mouth is connect by conveying pipeline with material-gathering device, and material-gathering device is for collecting zinc calcine product, the kiln tail setting feed inlet and cigarette
Gas exports, and feeding device is arranged at middle charging aperture, and exhanst gas outlet connects fume treatment unit；
Fume treatment unit includes sequentially connected expansion chamber and water purification spray column, is provided with exhaust outlet on water purification spray column
And leakage fluid dram, wherein exhaust outlet is connect by pipeline with lye spray column, and the flue gas that exhaust outlet comes out passes through at lye spray column
It is discharged after reason, leakage fluid dram is sequentially connected stirring pool and sedimentation basin by pipeline, and the liquid that leakage fluid dram comes out carries out in stirring pool
Enter precipitating in sedimentation basin after heavy zinc reaction, the sludge after precipitating is by being delivered to conduct in the feed inlet after filter press filters pressing
Feedstock circulation uses.
Further, the expansion chamber includes the first expansion chamber and the second expansion chamber, and flue gas successively passes through the first expansion chamber
With enter water purification spray column after the second expansion chamber, be additionally provided with discharge gate on the first expansion chamber and the second expansion chamber, discharge gate with
The sludge lead content of sludge drying device connection, discharge gate discharge is high, and outer sell can be packaged after sludge drying device is handled.Sedimentation
The use scope of room are as follows: to dust size>15 μm, temperature<400 DEG C, for partial size be 50 μm dust efficiency of dust collection be 96%,
It is 16% for 5 μm of dust efficiency of dust collections, is 3% for 1 μm of dust efficiency of dust collection, and metallurgical gas dust particle
Particle size range is 0.001~100 μm, and total efficiency of dust collection of gravity settling chamber is 40%~50%.In rotary kiln flue gas of the present invention
Dust particles partial size be distributed in 20~100 μm more；About 300 DEG C of kiln exit gas, flue gas characteristic in the gravitational settling scope of application,
Therefore as pre-dedusting device.
It further, is matrix pattern structure inside the water purification spray column, water purification spray column includes the first spray chamber, second
Spray chamber, third spray chamber and the 4th spray chamber, are provided with atomizer at the top of each spray chamber, and flue gas is from the first spray chamber
Bottom enters, then in turn through lye absorption tower is entered after the second spray chamber, third spray chamber and the 4th spray chamber, wherein the
Air-introduced machine is provided on four spray chambers.
Further, the water purification spray column is provided with matched first circulation pond, and the waste water in spray column after elution exists
It can enter the recycling of water purification spray column after ammonium hydrogen carbonate stirring and precipitation process are added in first circulation pond, the useless mud of generation is logical
Enter sludge drying device after crossing filter press filters pressing.
Further, the lye spray column is consistent with water purification spray tower structure, the atomizer at the top of lye spray column
External alkali liquor pipe is connected, flue gas enters from the first spray chamber bottom, then in turn through the second spray chamber, third spray chamber and the
It is discharged after four spray chambers, is again provided with air-introduced machine on the 4th spray chamber.
Further, the lye spray column is provided with matched second circulation pond, and the waste water in second circulation pond is used
NaOH solution adjusts PH to 10~12 and can enter the recycling of lye spray column after filtering, and the useless mud that lye spray column generates is logical
Enter sludge drying device after crossing filter press filters pressing.Lye absorption tower uses NaOH solution for absorbent, and waste water is through after spray
Two circulatory pools are recycled.Its cleaning principle is using NaOH liquid as diluent, is carried out in lye spray column with flue gas
Come into full contact with, collide, react, thus by the harmful ions such as sulphur, chlorine in flue gas be converted into can Precipitation sodium salt, including powder
Dirt and other harmful components, then sediment is discharged by filter plant.
Further, it is provided with grinding device between the discharge port and material-gathering device of the kiln hood, grinding device is provided with pair
The dust-extraction unit answered.
Further, it is provided with gas gathering mask on the exhanst gas outlet, for handling the fume centralized in rotary kiln.
Zinc calcine production and flue gas processing method are completed using zinc calcine as above production and smoke processing system, including
Following steps:
S1, pretreatment of raw material: raw material is granulated into the feed particulate material that particle size range is 0.2~20mm；
S2, roasting: feed particulate material is continuously put into rotary kiln from kiln tail, at the same by heavy oil from rotary kiln end with court
It is injected into rotary kiln to the direction of kiln tail, feed particulate material is mobile from kiln tail to kiln hood with the rotation of rotary kiln；It returns
It is divided into preheating section and conversion zone in rotary kiln, feed particulate material successively passes through the dehydration, preheating and the roasting of conversion zone of preheating section
After obtain zinc calcine crude product and rotary kiln flue gas, zinc calcine crude product discharges from kiln hood, rotary kiln flue gas through fume treatment unit at
It is discharged after reason；
S2, the finishing of zinc calcine crude product: it after the cooling of zinc calcine crude product, is crushed with grinding device, by grinding device
The retention material of treated crushed material and dust-extraction unit is mixed to get zinc calcine product, and the zinc content of zinc calcine product is greater than
65%.
The processing method of fume treatment unit processing are as follows:
1) settle: flue gas, which successively passes through, carries out two-stage natural subsidence in the first expansion chamber and the second expansion chamber, which uses
In making particle thicker in flue gas settle down；
2) spray: the flue gas after sedimentation enters water purification spray column, and the liquid-gas ratio of water purification spray column is 0.8~0.9 L/m3,
Flue gas is set after passing sequentially through the first spray chamber, the second spray chamber, third spray chamber and the 4th spray chamber in water purification spray column
The air-introduced machine being placed on the 4th spray chamber is drawn；The step is for reducing thinner particle in flue gas；
3) lye absorbs: the flue gas after spray process enters lye spray column, flue gas in lye spray column successively
Pass through the air inducing being arranged on the 4th spray chamber after the first spray chamber, the second spray chamber, third spray chamber and the 4th spray chamber
Power traction goes out, and then discharges.
Further, the raw material includes secondary zinc oxide and zinc content is 30~55% containing Zn scrap returns, packet containing Zn scrap returns
It includes and belongs to the waste containing zinc of HW23 range, the non-ferrous metal metallurgy waste that belongs to HW48 range, belongs to the leaded useless of HW31 range
One or more of object, the surface treatment waste for belonging to HW17 range.
The utility model has the advantages that zinc calcine production of the present invention and smoke processing system, can contain Zn scrap returns, big rule using various
Mould production provides the zinc metallurgy raw material zinc calcine that quality is stable, rate containing zinc is high, can be reduced the resource gap of zinc metallurgy raw material, and produced
Flue gas is dealt carefully in journey, low in the pollution of the environment, can be mass produced and be promoted the use of in the actual production process, with tradition
Production is compared entirely different and has marked improvement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of zinc calcine production and smoke processing system in the present invention.
Fig. 2 is the structural schematic diagram of water purification spray column in the present invention.
Wherein: 1, rotary kiln；2, heavy oil injection apparatus；3, grinding device；4, dust-extraction unit；5, material-gathering device；6, it feeds
Device；7, the first expansion chamber；8, the second expansion chamber；9, sludge drying device；10, lye spray column；11, second circulation pond；12,
Water purification spray column；121, the first spray chamber；122, the second spray chamber；123, third spray chamber；124, the 4th spray chamber；125,
Air-introduced machine；13, first circulation pond；14, stirring pool；15, sedimentation basin；16, plate and frame filter press；17, kiln hood；18, kiln tail；19, pre-
Hot arc；20, conversion zone.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
Zinc calcine production as shown in Figure 1 and smoke processing system comprising zinc calcine production unit and fume treatment list
Member, wherein zinc calcine production unit includes rotary kiln 1, and rotary kiln 1 includes kiln hood 17 and kiln tail 18, and discharging is arranged on kiln hood 17
Mouthful, discharge port is successively connect with grinding device 3 and material-gathering device 5 by conveying pipeline, and grinding device 3 is roller mill, for zinc
Calcining crude product carries out retrofit, and preferably to meet client's needs, material-gathering device 5 crushes dress for collecting zinc calcine product
It sets to also set up on 3 and is additionally provided with corresponding dust-extraction unit 4 on grinding device 3, dust-extraction unit 4 equally connect with material-gathering device 5, removes
Dirt device 4 is for being filtered and intercepting to the air with dust that roller mill generates in crushing process, thus by containing zinc
Dust is collected, and increases product yield, and prevent from dust from entering air to prevent air pollution.
Feed inlet and exhanst gas outlet are set in the kiln tail 18 of rotary kiln 1, feeding device 6, feeding device 6 are set at feed inlet
For feeder, and it is provided with gas gathering mask on exhanst gas outlet, is merged into capable place for collecting the flue gas in rotary kiln 1 to the greatest extent
Reason.
Fume treatment unit includes sequentially connected expansion chamber and water purification spray column, and middle setting chamber includes the first expansion chamber
7 and second expansion chamber 8, flue gas successively enter water purification spray column 12 after the first expansion chamber 7 and the second expansion chamber 8, first is heavy
It is additionally provided with discharge gate on drop room 7 and the second expansion chamber 8, discharge gate is connect with sludge drying device 9, the sludge of discharge gate discharge
Lead content is high, and outer sell can be packaged after the processing of sludge drying device 9.More points of dust particles partial size in rotary kiln flue gas of the present invention
Cloth is at 20~100 μm；About 300 DEG C of kiln exit gas, flue gas characteristic is in the gravitational settling scope of application, therefore as pre- dedusting
Device, in the present embodiment, setting two-stage settles the pretreatment efficiency to particulate matter, Pb, As and its compound in rotary kiln flue gas
It is 40~45%.
Exhaust outlet is provided on water purification spray column 12, exhaust outlet is connect by pipeline with lye spray column 10, and exhaust outlet goes out
The flue gas come discharges after being handled by lye spray column 10, is wherein matrix pattern structure inside water purification spray column 12, such as Fig. 2 institute
Showing, water purification spray column 12 includes the first spray chamber 121, the second spray chamber 122, third spray chamber 123 and the 4th spray chamber 124,
Atomizer is provided at the top of each spray chamber, flue gas enters from 121 bottom of the first spray chamber, then in turn through the second spray
Enter lye absorption tower 10 after drenching room 122, third spray chamber 123 and the 4th spray chamber 124, wherein setting on the 4th spray chamber 124
Air-introduced machine is equipped with for guiding flue gas to be discharged, its particle disposal rate reaches 60~64% by the flue dust of multiple cleaning；This
In invention, water purification spray column 12 is provided with matched first circulation pond 13, and the waste water in water purification spray column 12 after elution is first
Addition ammonium hydrogen carbonate is stirred and be can enter in water purification spray column 12 after precipitation process and is recycled in circulatory pool 13, the useless mud of generation
Then by entering sludge drying device 9 after filter press filters pressing, outer sell is packaged as lead mud after drying.
And lye spray column 10 is consistent with 12 structure of water purification spray column, the atomizer connection at 10 top of lye spray column is outer
Portion's alkali liquor pipe, therefore the flue gas by purification spray column processing enters from the first spray chamber bottom of lye spray column 10, then
It is successively discharged after the second spray chamber, third spray chamber and the 4th spray chamber, is again provided with air-introduced machine on the 4th spray chamber.
Lye spray column 10 is provided with matched second circulation pond 11, and the waste water in second circulation pond 11 adjusts PH to 10 with NaOH solution
~12 and it can enter the recycling of lye spray column 10 after filtering, the useless mud that lye spray column 10 generates is by after filter press filters pressing
Into sludge drying device 9.Lye absorption tower uses NaOH solution for absorbent, and waste water is recycled through second circulation pond 11 after spray
It uses.Its cleaning principle is come into full contact with, is touched with tail gas in lye spray column as diluent using NaOH liquid
Hit, react, thus by the harmful ions such as sulphur, chlorine in tail gas be converted into can Precipitation sodium salt, including dust and other have
Evil ingredient, then sediment is discharged by filter plant.
It is 99% to total treatment effeciency of particulate matter in rotary kiln flue gas in the present embodiment, to SO2, HCl, fluoride it is total
Treatment effeciency is 90%, flue dust, SO after fume treatment unit is handled2, HCl, fluoride, NOx, Pb, Zn, As concentration be respectively
12.94mg/m3、13.33mg/m3、5.95mg/m3、4.97mg/m3、0.049mg/m3、2.14mg/m3、0.14mg/m3。
Setting is also provided with leakage fluid dram on water purification spray column 12, and leakage fluid dram is sequentially connected stirring pool 14 by pipeline and sinks
Shallow lake pond 15, the liquid that leakage fluid dram comes out is carried out entering in sedimentation basin 15 after heavy zinc reacts in stirring pool 14 and be precipitated, after precipitating
Sludge is used by being delivered in feeder after filter press filters pressing as feedstock circulation.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of zinc calcine production and smoke processing system, which is characterized in that including zinc calcine production unit and fume treatment list
Member, wherein
Zinc calcine production unit includes rotary kiln, and rotary kiln includes kiln hood and kiln tail, and discharge port is arranged in the kiln hood, and discharge port is logical
It crosses conveying pipeline to connect with material-gathering device, material-gathering device goes out for collecting zinc calcine product, the kiln tail setting feed inlet and flue gas
Mouthful, feeding device is set at middle charging aperture, and exhanst gas outlet connects fume treatment unit；
Fume treatment unit includes sequentially connected expansion chamber and water purification spray column, is provided with exhaust outlet and row on water purification spray column
Liquid mouth, wherein exhaust outlet is connect by pipeline with lye spray column, after the flue gas that exhaust outlet comes out is handled by lye spray column
Discharge, leakage fluid dram are sequentially connected stirring pool and sedimentation basin by pipeline, and the liquid that leakage fluid dram comes out carries out heavy zinc in stirring pool
Enter precipitating in sedimentation basin after reaction, the sludge after precipitating after filter press filters pressing by being delivered in the feed inlet as raw material
It is recycled.
2. zinc calcine according to claim 1 production and smoke processing system, which is characterized in that the expansion chamber includes the
One expansion chamber and the second expansion chamber, flue gas successively after the first expansion chamber and the second expansion chamber enter water purification spray column, first
It is additionally provided with discharge gate on expansion chamber and the second expansion chamber, discharge gate is connect with sludge drying device, the sludge of discharge gate discharge
Lead content is high, and outer sell can be packaged after sludge drying device is handled.
3. zinc calcine production according to claim 1 and smoke processing system, which is characterized in that in the water purification spray column
Portion is matrix pattern structure, and water purification spray column includes the first spray chamber, the second spray chamber, third spray chamber and the 4th spray chamber, often
Be provided with atomizer at the top of a spray chamber, flue gas enters from the first spray chamber bottom, then in turn through the second spray chamber,
Enter lye absorption tower after third spray chamber and the 4th spray chamber, wherein being provided with air-introduced machine on the 4th spray chamber.
4. zinc calcine production according to claim 3 and smoke processing system, which is characterized in that the water purification spray column is set
It is equipped with matched first circulation pond, ammonium hydrogen carbonate stirring is added simultaneously in the waste water in water purification spray column after elution in first circulation pond
It can enter the recycling of water purification spray column after precipitation process, the useless mud of generation is by entering sludge drying dress after filter press filters pressing
It sets.
5. zinc calcine according to claim 3 production and smoke processing system, which is characterized in that the lye spray column and
It is consistent that water purification sprays tower structure, and atomizer at the top of lye spray column connects external alkali liquor pipe, and flue gas is from the first spray chamber bottom
Portion enters, and then in turn through discharging after the second spray chamber, third spray chamber and the 4th spray chamber, equally sets on the 4th spray chamber
It is equipped with air-introduced machine.
6. zinc calcine production according to claim 5 and smoke processing system, which is characterized in that the lye spray column is set
It is equipped with matched second circulation pond, the waste water in second circulation pond can enter after adjusting PH to 10~12 and filtering with NaOH solution
Lye spray column is recycled, and the useless mud that lye spray column generates is by entering sludge drying device after filter press filters pressing.
7. zinc calcine production according to claim 1 and smoke processing system, which is characterized in that the discharge port of the kiln hood
Grinding device is provided between material-gathering device, grinding device is provided with corresponding dust-extraction unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821920416.5U CN209508361U (en) | 2018-11-21 | 2018-11-21 | A kind of production of zinc calcine and smoke processing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821920416.5U CN209508361U (en) | 2018-11-21 | 2018-11-21 | A kind of production of zinc calcine and smoke processing system |
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| CN209508361U true CN209508361U (en) | 2019-10-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266845A (en) * | 2018-11-21 | 2019-01-25 | 桂阳银龙科技有限责任公司 | A kind of production of zinc calcine and smoke processing system and method |
-
2018
- 2018-11-21 CN CN201821920416.5U patent/CN209508361U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266845A (en) * | 2018-11-21 | 2019-01-25 | 桂阳银龙科技有限责任公司 | A kind of production of zinc calcine and smoke processing system and method |
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