CN110157923A - A kind of electric furnace zinc smelting and vent gas treatment reuse method and device - Google Patents
A kind of electric furnace zinc smelting and vent gas treatment reuse method and device Download PDFInfo
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- CN110157923A CN110157923A CN201910590354.9A CN201910590354A CN110157923A CN 110157923 A CN110157923 A CN 110157923A CN 201910590354 A CN201910590354 A CN 201910590354A CN 110157923 A CN110157923 A CN 110157923A
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- zinc
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000011701 zinc Substances 0.000 title claims abstract description 114
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000003723 Smelting Methods 0.000 title claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 239000012716 precipitator Substances 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 138
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 239000002737 fuel gas Substances 0.000 claims description 18
- 238000009858 zinc metallurgy Methods 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 10
- 239000010865 sewage Substances 0.000 claims description 10
- 239000006227 byproduct Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 230000003020 moisturizing effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000047 product Substances 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 15
- 239000000843 powder Substances 0.000 description 8
- 239000003517 fume Substances 0.000 description 7
- XOSXWYQMOYSSKB-LDKJGXKFSA-L water blue Chemical compound CC1=CC(/C(\C(C=C2)=CC=C2NC(C=C2)=CC=C2S([O-])(=O)=O)=C(\C=C2)/C=C/C\2=N\C(C=C2)=CC=C2S([O-])(=O)=O)=CC(S(O)(=O)=O)=C1N.[Na+].[Na+] XOSXWYQMOYSSKB-LDKJGXKFSA-L 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D7/00—Sublimation
- B01D7/02—Crystallisation directly from the vapour phase
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/08—Production of synthetic natural gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/04—Obtaining zinc by distilling
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a kind of electric furnace zinc smelting and vent gas treatment reuse method and device, the reaction product that electric furnace zinc smelting is obtained passes through chiller Quench, obtain crude zinc and tail gas, and tail gas is made to pass sequentially through cyclone separator, fiber bag precipitator, tail gas buffer, steam useless pot system, liquid piston compressor, separator, the further recycling of zinc particle and energy regenerating are utilized with realizing.Electric furnace zinc smelting and vent gas treatment reuse method of the invention and device have the advantages such as product yield is high, cost is small, energy-saving and emission-reduction, energy utilization rate height.
Description
Technical field
The present invention relates to zinc metallurgy and tail gas recycles to utilize technical field, and in particular to a kind of electric furnace zinc smelting and vent gas treatment are returned
Use method and apparatus.
Background technique
In modern industry, zinc has indelible status.Zinc is both auto industry, chemical engineering industry and war industry etc.
The basic non-ferrous raw material of development, and the basic raw material closely related with people's lives.Currently, zinc is in non-ferrous metal
Consumption in be only second to copper and aluminium, be the third-largest non-ferrous metal.Zinc metal has good calenderability, wearability and anti-corrosion property,
The more excellent alloy of physical and chemical properties can be made with various metals.
China is led-zinc-silver deposit big country important in the world, and zinc technology development is more early, and zinc technology processed is more mature, China
Zn Cr coating is mainly made of mining, ore dressing and smelting three parts.Since nineteen ninety, China remove a small amount of special Zinc material still need to according to
Outside import, zinc concentrate, smart zinc and kirsite net export quantity high speed are incremented by, and are in higher developing state.
Zn Cr coating is minerals processing industry, belongs to traditional non-ferrous metal reparation technology, Zn Cr coating belong to it is traditional " highly energy-consuming,
Maximum discharge, high pollution " industry, environmental pollution is very big in smelting process.The zinc amount that China was discharged into atmosphere in 2017
It is 289000 tons, wherein there are about 30% smelting processings from zinc.
Traditional electric furnace zinc smelting method is that zinc ore, reducing agent and additive are added in electric furnace to heat, electric furnace output
1050~1200 DEG C of zinc fume.Zinc vapor condensing is obtained by crude zinc by splash condenser again.Tail gas passes through dry method or wet
Method further removes direct emission atmosphere after solid particle.
Such method has following problem:
1. it is liquid/solid zinc that splash condenser, which is by zinc vapor condensing, long-play is easily blocked.Operation is steady
Qualitative difference.
2. 1050~1200 DEG C need using a large amount of circulating waters, a large amount of higher calorific value wastes, while increasing a large amount of electricity
Consumption and water consume.
3. splash cooler is dividing wall type heat exchanger, heat exchange efficiency is low, and the zinc product yield for reaching considerable can make cold
But device enormous size.Increase investment and land occupation.
4. containing fuel gas such as the preferable carbon monoxide of a large amount of calorific values in tail gas, but because wherein still containing high-content
Zinc powder can only can not be discharged on the spot directly using wherein heat, waste of energy while, will cause serious environmental pollution.
5. thering is about 2% zinc to pass through exhaust emissions to atmosphere, waste is serious after traditional electric furnace zinc smelting technique.
6. being to be recycled by washer shower, but pass through washer when removing the remaining zinc in tail gas using wet process
The substance recycled is water blue powder, and the main component of water blue powder is zinc oxide, and water blue powder need to pass through precipitating, salvaging, granulation again
After drying, then melting is melted down, such treatment process repeatedly considerably increases the cost of electric furnace zinc smelting, and this passes through water
The zinc recovery of shower method can only achieve 94%, and Zn content is more in the exhaust gas being discharged after water shower, and direct emission is to air
It is seriously polluted；The water blue powder that water shower generates is salvaged after needing a large amount of man power and material to precipitate, the water salvaged
Blue powder needs to melt down melting after granulation and drying again, and constantly melt down melting generation sewage quantity it is more, deal with compared with
Difficulty, handling are very expensive；It is excessively complicated to melt down melting process, wastes a large amount of man power and material, and melts down melting again
Will increase the consumption of electric energy, and melt down every time melting all can some zinc be discharged into air, be unfavorable for environmental protection, also not
Conducive to energy conservation, the purpose of energy-saving consumption-reducing is not achieved, does not meet the principle of energy-saving and emission-reduction completely.
Summary of the invention
In view of this, the invention is directed to the method and dress of a kind of Novel electric furnace zinc metallurgy and vent gas treatment reuse
It sets, for this kind of technique compared with existing smelting process and vent gas treatment reuse method, having can be improved system run all right, energy
Source utilization rate and zinc yield processed, while sewage discharge can be reduced, cost is reduced, related device can be used to newly-built electric furnace zinc smelting dress
It sets, original electric furnace zinc smelting device can also be transformed, it is practical.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of electric furnace zinc smelting and vent gas treatment reuse method, include the following steps:
Step 1: raw material carries out zinc metallurgy reaction in electric furnace, obtained reaction product enter chiller mixed with recyclegas it is sharp
It is cold, obtain the mixed gas of including zinc particles；
Step 2: the mixed gas for the including zinc particles that step 1 generates enters cyclone separator, is consolidated by cyclonic action
Gas separation, obtains zinc particle and the first tail gas；
Step 3: the first tail gas that step 2 generates enters fiber bag precipitator, through being further separated by filtration to obtain zinc
Grain and the second tail gas；
Step 4: the second tail gas that step 3 generates enters tail gas buffer, after sufficient standing sedimentation, obtains zinc particle and the
Three tail gas；On the one hand the setting of tail gas buffer can make the zinc powder in the second tail gas f carry out sufficient standing, zinc powder is able to separate simultaneously
It is settled down to device bottom, on the other hand since electric furnace outlet pressure and flowed fluctuation are larger, setting tail gas buffer be can protect
Upstream furnace operation is unaffected, while it is also ensured that subsequent tail gas pressure charging system (mainly by compressor and separator group at)
Inlet pressure and outlet pressure it is relatively steady.
Step 5: the third tail gas that step 4 obtains enters the useless pot system of steam, obtains steam and the 4th tail gas；It has passed through
After cyclone separator 2, efficient fabric sack cleaner 3 and tail gas buffer 4, the zinc content in third tail gas is very low
Sensible heat in high-temperature tail gas is fully converted into vapour latent heat by (< 1%), the pot system that can be given up at this time by steam, is allowed entire
Technique calorific value utilization is more reasonable, and the steam of by-product can use by oneself or sell outside, also can be improved economic benefit.
Step 6: the 4th tail gas that step 5 generates enters liquid piston compressor, obtains pressurization tail gas through pressurization；Liquid-ring type pressure
Contracting machine improves tail gas pressure, increases convenient degree and flexibility that wherein the incendivities gas such as CO, H2 utilizes, can in practical operation
Liquid piston compressor outlet pressure is freely determined with fuel gas pressure condition according to actual needs.
Step 7: the pressurization tail gas that step 6 obtains enters separator, obtains fuel gas and sewage containing zinc through gas-liquid separation, and one
Part of fuel gas leads to fuel gas pipe network, and another part fuel gas flows into chiller as recyclegas.
Further, the fiber bag precipitator of step 3 is at least provided with 2, when a bag filter stops working, switching
It works on to another spare fiber bag precipitator.
Further, the steam of step 5 gives up pot system at least provided with 2 useless pots, and is sequentially communicated between useless pot, step 4
Obtained third tail gas enters the useless pot system of steam, while carrying out moisturizing to useless pot, obtains the tail gas byproduct steam of different grades.
Byproduct steam grade and overheat condition are freely deployed according to full factory situation condition, settable multiple useless pots are efficiently to utilize heat in tail gas
Amount.
Further, the tail gas buffer bottom of step 4 is equipped with manhole, when system stalls, by zinc particle from tail
The manhole of gas surge tank is dug out.
Further, the volume of the tail gas buffer of step 4 can meet 10~15 minute buffer time of tail gas.The setting can
Settle tail gas sufficient standing in surge tank.
A kind of electric furnace zinc smelting and vent gas treatment reclamation set, including be sequentially communicated electric furnace, chiller, cyclone separator,
The useless pot system of bag filter, tail gas buffer, steam, water ring compressor and separator, further include fuel pipe network connecting pipe,
The chiller and fuel pipe network connecting pipe respectively be connected at the top of separator.
Further, the connecting path of the separator and chiller is equipped with the first valve, the fuel pipe network connection
Pipeline is equipped with the second valve.Two-way gas flow is controlled by the first valve, the second valve respectively.
Further, the separator is connected with water pipe.When the water level of separator is relatively low, pass through water pipe
Moisturizing is carried out into separator.
It further, further include water cooler, the water cooler is connected to liquid piston compressor, separator respectively.
The water temperature that the pressurization tail gas obtained through liquid piston compressor enters separator and will lead in separator increases, in reality
In the course of work, the water cooled device of a part of water flow of separator returns to water ring compressor and carries out tail gas pressurization, and heat therein is logical
It crosses water cooler and takes system out of.
Liquid piston compressor and separator group at tail gas pressure charging system have three major functions, one are as follows: will enter and increase
4th tail gas of pressure system is pressurized, and tail gas is finally changed into the fuel gas and recyclegas that can be recycled；Secondly
Are as follows: using the working principle of liquid piston compressor, water is brought into system while pressurization, cleans remaining trace zinc in tail gas
Powder, and gas-liquid-solid three-phase separation is finally completed in the separator, fuel gas exports at the top of separator, and a small amount of of including zinc particles gives up
Water is exported from separator bottom；Thirdly are as follows: will final unserviceable tail gas heat quantity (steam gives up 100 of output after pot system
DEG C or so tail gas) be sufficiently transferred in process water, and take system out of eventually by water cooler.
Steam gives up the setting of pot system in the separators such as cyclone separator, bag filter, tail gas buffer and liquid-ring type
Between compressor, the zinc granule in avoidable tail gas, which remains in useless pot, results in blockage or damages useless pot, and in addition tail gas passes through steam
Temperature is greatly reduced after useless pot system, while improving capacity usage ratio, high-temperature tail gas is avoided to be directly entered tail gas pressurization system
System causes a large amount of recirculated water to be lost.
Compared with the existing technology, a kind of electric furnace zinc smelting and vent gas treatment reuse method described in the invention and device,
It is advantageous that:
(1) a kind of electric furnace zinc smelting and vent gas treatment reuse method and device provided by the invention, will by Quench mixer
Zinc fume is condensed into rapidly solid zinc, is able to solve the blockage problem of splash cooler in traditional smelting process, provides more preferable
Operation stability；In addition because not using splash cooler in device, gross investment can be largely reduced under identical yield.
(2) a kind of electric furnace zinc smelting and vent gas treatment reuse method and device provided by the invention, can be given up pot by steam
The higher calorific value of electric furnace gas is fully converted into byproduct steam by system, and can carry out personal settings according to full factory's steam grade,
Operating flexibility is good, and energy utilization rate is high, and the steam of by-product can be good in economic efficiency independently using can also sell outside；
(3) a kind of electric furnace zinc smelting and vent gas treatment reuse method and device provided by the invention are, it can be achieved that zinc metallurgy tail gas
All of, it is personal as fuel gas or outside sell, with extraordinary economic benefit；Meanwhile it changing in conventional process flow
The direct outlet atmosphere of tail gas avoids particulate matter and pernicious gas pollution environment.
(4) using Novel electric furnace zinc metallurgy provided by the invention and vent gas treatment reuse method and device, than traditional zinc metallurgy work
The zinc yield of skill improves 5%, and the crude zinc of output is the drying solid-state zinc powder being easily recycled；
(5) Novel electric furnace smelting process provided by the invention, can under same zinc yield compared with traditional smelting process
Water blue powder amount is 3. reduced 1. reducing quantity of wastewater effluent containing zinc and 2. improving the content of water blue powder in sewage.Traditional handicraft is being washed
During can generate the sewage of a large amount of aqueous blue powders, these sewage intercepting wells get up to be spent human and material resources very much.
(6) cooling means that Novel electric furnace smelting process provided by the invention uses is Quench combined cooling, i.e., largely
Low temperature Quench gas contact cooling with zinc fume, mass transfer and heat transfer while carrying out, the zinc fume by Quench can cool down rapidly
For the crude product zinc of uniform particle diameter, the crude product zinc granule diameter than traditional splash cooler output is evenly distributed, and shapeliness, benefit
Continue to purify in downstream.
(7) Novel electric furnace smelting process device provided by the invention is easy to operate, safety and environmental protection, and total occupied area is small.Nothing
It is transformed all by for creating electric furnace zinc smelting device, or to original electric furnace zinc smelting device with very strong operability.
(8) Novel electric furnace smelting process provided by the invention is to all kinds of electric furnace strong applicabilities, do not need to electric furnace itself into
Row transformation replacement can be transformed using smelting process provided by the invention.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of electric furnace zinc smelting and vent gas treatment recovering process flow figure described in the embodiment of the present invention.
Description of symbols:
1- chiller；2- cyclone separator；3- bag filter；4- tail gas buffer；5- liquid piston compressor；6- gas-liquid
Separator；7- electric furnace；8- steam gives up pot system；9- water pipe；10- water cooler；11- fuel pipe network connecting pipe；12- first
Valve；The second valve of 13-；14- supply line；
A- reaction product；B- recyclegas；The mixed gas of c- including zinc particles；D- zinc particle；The first tail gas of e-；F- second
Tail gas；G- third tail gas；H- recirculated water；I- high-grade steam；The low-grade steam of j-；The 4th tail gas of k-；M- is pressurized tail gas；N- is clean
Net fuel gas；P- exotic fuels gas；Q- sewage containing zinc.
Specific embodiment
Below in conjunction with embodiment come the present invention will be described in detail create.
Embodiment:
As shown in Figure 1, a kind of electric furnace zinc smelting and vent gas treatment reuse method, the Novel electric furnace zinc metallurgy of use and vent gas treatment
Reclamation set includes the electric furnace 7 being sequentially communicated, chiller 1, cyclone separator 2, bag filter 3, tail gas buffer 4, steam
Useless pot system 8, water ring compressor 5 and separator 6, further include fuel pipe network connecting pipe 11, chiller 1 is connected with fuel pipe network
Pipeline 11 is connected with the top of separator 6 respectively, and the connecting path of separator 6 and chiller 1 is equipped with the first valve 12, combustion
Expects pipe net connecting pipe 11 is equipped with the second valve 13.Separator 6 is connected with water pipe 9.It further include water cooler 10, water cooling
Device 10 is connected to liquid piston compressor 5, separator 6 respectively.
When carrying out zinc metallurgy and vent gas treatment reuse, raw material carries out zinc metallurgy reaction in electric furnace 7 first, and obtaining temperature is 1050
~1200 DEG C of reaction product a, reaction product a are by the gas compositions such as zinc fume, CO and a small amount of CO2, CH4, and wherein zinc fume contains
Amount about 75~80%.Reaction product a subsequently enters chiller 1 and mixes Quench with a large amount of recyclegas b, makes reaction product a
In gaseous state zinc be quickly cooled under the efficient cooling effect of recyclegas b as zinc particle, to obtain the mixed of including zinc particles
Close gas c；
The mixed gas c of including zinc particles enters cyclone separator 2, and in cyclone separator 2,97% or more zinc particle is logical
It crosses cyclonic action to be separated, zinc particle d discharges from the lower section of cyclone separator 2, obtains the crude zinc of solid-state and drying, has
First tail gas e of a small amount of zinc particle (about 3%) is exported from the top of cyclone separator 2.The first tail gas e enters cloth-bag type later
Deduster 3 is further separated by filtration to obtain zinc particle d and the second tail gas f；For the continuous operation of system, cloth-sack-type dust removal
Device 3 is equipped with 2, and opens 1 using 1 for formula design, when carrying out cloth bag cleaning, when a bag filter 3 stops working, switches
It works on to another spare fiber bag precipitator 3.
By in the second tail gas f obtained after separation of fiber bag precipitator 3 only residue 1% or so little particle zinc powder, should
Second tail gas f enters tail gas buffer 4 and obtains zinc particle and third tail gas g after sufficient standing sedimentation；By adequately settling,
Small zinc particle is settled down to 4 bottom of tail gas buffer, and 4 bottom of tail gas buffer is equipped with manhole can be by zinc when system shutdown
Grain d is dug out from the manhole of tail gas buffer 4.The zinc obtained by cyclone separator 2, bag filter 3 and tail gas buffer 4
Grain d finally converges, and so far, all to dry the crude zinc of solid-state form output, output, crude zinc yield have been 99%.
After tail gas buffer 4 further removes the zinc particle in tail gas, it is useless that obtained third tail gas g enters steam
Pot system 8, the useless pot system 8 of steam includes 2 useless pots being sequentially communicated, while third tail gas g gives up pot system 8 by steam
Useless pot is given to carry out moisturizing by supply line 14, to obtain high-grade steam i, low-grade steam j and the 4th tail gas k；
The 4th tail gas k temperature after steam gives up pot system 8 reduces, and is down to 100 DEG C or so, the 4th tail gas k is with laggard
Enter liquid piston compressor 5 to be pressurized, obtains pressurization tail gas m；Pressurization tail gas m subsequently enters separator 6 and carries out gas-liquid separation, obtains
To clean fuel gas n and sewage containing zinc q, fuel gas n is exported at the top of separator 6, and the q of sewage containing zinc is from 6 bottom of separator on a small quantity
Portion's output.The fuel gas n exported at the top of separator 6 points are two-way, lead to combustion by fuel gas pipe net interface channel 11 all the way
Expect gas pipe network, another way is passed through chiller 1 as recyclegas b again, and two-way gas flow is respectively by the second valve 13, first
Valve 12 is controlled.The water cooled device 10 of a part of water flow of separator 6 returns to water ring compressor 5, final unserviceable tail
Gas heat is sufficiently transferred in recirculated water h, and takes system out of eventually by water cooler 10.
Above-mentioned Novel electric furnace zinc metallurgy and vent gas treatment reuse method and device can be applicable to Large Electric Furnace (5000kW) or in
On small-sized furnace device (500~2500kW).
Respectively by taking the electric furnace of 500kW, 3000kW as an example, above-mentioned novel process and traditional handicraft comparison are shown in Table 1:
Wherein traditional handicraft refers to for zinc ore, reducing agent and additive to be added in electric furnace and heat, electric furnace output 1050~
1200 DEG C of zinc fume, then zinc vapor condensing is obtained by crude zinc by splash condenser, the tail gas of generation is rushed by washer
Leaching further removes solid particle, later direct emission atmosphere.
Table 1:
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (9)
1. a kind of electric furnace zinc smelting and vent gas treatment reuse method, which comprises the steps of:
Step 1: raw material carries out zinc metallurgy reaction in electric furnace, and obtained reaction product enters chiller and mixes Quench with recyclegas,
Obtain the mixed gas of including zinc particles；
Step 2: the mixed gas for the including zinc particles that step 1 generates enters cyclone separator, carries out solid gas point by cyclonic action
From obtaining zinc particle and the first tail gas；
Step 3: the first tail gas that step 2 generates enters fiber bag precipitator, be further separated by filtration to obtain zinc particle and
Second tail gas；
Step 4: the second tail gas that step 3 generates enters tail gas buffer and obtains zinc particle and third tail after sufficient standing sedimentation
Gas；
Step 5: the third tail gas that step 4 obtains enters the useless pot system of steam, obtains steam and the 4th tail gas；
Step 6: the 4th tail gas that step 5 generates enters liquid piston compressor, obtains pressurization tail gas through pressurization；
Step 7: the pressurization tail gas that step 6 obtains enters separator, obtains fuel gas and sewage containing zinc through gas-liquid separation, a part
Fuel gas leads to fuel gas pipe network, and another part fuel gas flows into chiller as recyclegas.
2. a kind of electric furnace zinc smelting according to claim 1 and vent gas treatment reuse method, it is characterised in that: the cloth of step 3
Sack cleaner is at least provided with 2, when a bag filter stops working, switch to another spare fiber bag precipitator after
Continuous work.
3. a kind of electric furnace zinc smelting according to claim 1 and vent gas treatment reuse method, it is characterised in that: the steaming of step 5
Vapour gives up pot system at least provided with 2 useless pots, and is sequentially communicated between useless pot, and the third tail gas that step 4 obtains enters the useless pot of steam
System, while moisturizing is carried out to useless pot, obtain the tail gas byproduct steam of different grades.
4. a kind of electric furnace zinc smelting according to claim 1 and vent gas treatment reuse method, it is characterised in that: the tail of step 4
Gas buffering pot bottom is equipped with manhole and digs out zinc particle from the manhole of tail gas buffer when system stalls.
5. a kind of electric furnace zinc smelting according to claim 1 and vent gas treatment reuse method, it is characterised in that: the tail of step 4
The volume of gas surge tank can meet 10~15 minute buffer time of tail gas.
6. a kind of electric furnace zinc smelting and vent gas treatment reclamation set, it is characterised in that: including the electric furnace, chiller, rotation being sequentially communicated
The useless pot system of wind separator, bag filter, tail gas buffer, steam, water ring compressor and separator, further include fuel pipe network
Connecting pipe, the chiller and fuel pipe network connecting pipe respectively be connected at the top of separator.
7. a kind of electric furnace zinc smelting according to claim 6 and vent gas treatment reclamation set, it is characterised in that: the separator
It is equipped with the first valve with the connecting path of chiller, the fuel pipe network connecting pipe is equipped with the second valve.
8. a kind of electric furnace zinc smelting according to claim 6 and vent gas treatment reclamation set, it is characterised in that: the separator
It is connected with water pipe.
9. a kind of electric furnace zinc smelting according to claim 6 and vent gas treatment reclamation set, it is characterised in that: further include water cooling
Device, the water cooler are connected to liquid piston compressor, separator respectively.
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| US4200454A (en) * | 1977-04-12 | 1980-04-29 | Metallgesellschaft Ag | Process for the volatilization of zinc and/or lead from metallurgical material |
| CN101492774A (en) * | 2008-01-21 | 2009-07-29 | 中国恩菲工程技术有限公司 | Zinc metallurgy apparatus and process |
| CN102181663A (en) * | 2011-04-27 | 2011-09-14 | 葫芦岛锌业股份有限公司 | Method for producing zinc powder by treating zinc-containing miscellaneous material through electric furnace |
| CN106756096A (en) * | 2016-12-01 | 2017-05-31 | 邓富洪 | A kind of method of the waste gas recovery zinc powder that utilization electric furnace zinc smelting is produced |
| CN107475531A (en) * | 2017-08-23 | 2017-12-15 | 邓富洪 | A kind of system and method for reclaiming zinc powder |
| CN210314436U (en) * | 2019-07-02 | 2020-04-14 | 中国天辰工程有限公司 | Electric furnace zinc smelting and tail gas treatment and recycling device |
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2019
- 2019-07-02 CN CN201910590354.9A patent/CN110157923B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4200454A (en) * | 1977-04-12 | 1980-04-29 | Metallgesellschaft Ag | Process for the volatilization of zinc and/or lead from metallurgical material |
| CN101492774A (en) * | 2008-01-21 | 2009-07-29 | 中国恩菲工程技术有限公司 | Zinc metallurgy apparatus and process |
| CN102181663A (en) * | 2011-04-27 | 2011-09-14 | 葫芦岛锌业股份有限公司 | Method for producing zinc powder by treating zinc-containing miscellaneous material through electric furnace |
| CN106756096A (en) * | 2016-12-01 | 2017-05-31 | 邓富洪 | A kind of method of the waste gas recovery zinc powder that utilization electric furnace zinc smelting is produced |
| CN107475531A (en) * | 2017-08-23 | 2017-12-15 | 邓富洪 | A kind of system and method for reclaiming zinc powder |
| CN210314436U (en) * | 2019-07-02 | 2020-04-14 | 中国天辰工程有限公司 | Electric furnace zinc smelting and tail gas treatment and recycling device |
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