CN204619726U - Copper making ring collection flue gas desulfur device - Google Patents
Copper making ring collection flue gas desulfur device Download PDFInfo
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- CN204619726U CN204619726U CN201520296552.1U CN201520296552U CN204619726U CN 204619726 U CN204619726 U CN 204619726U CN 201520296552 U CN201520296552 U CN 201520296552U CN 204619726 U CN204619726 U CN 204619726U
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- flue gas
- hydrogen peroxide
- ring collection
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Abstract
The utility model relates to Copper making environmental technology field, the device of Copper making ring collection flue gas desulfurization specifically.This device comprises flue gas classification pretreatment unit and desulfurizer, pretreatment unit comprise in cleaning dust equipment, heat energy recovery equipment, humidification washing facility, defogging equipment one or more, hydrogen peroxide desulfurizer comprises hydrogen peroxide desulfurizing tower, desulfur pump, dioxygen tank, dioxygen water pump.Its operating procedure first carries out classification process to sulfur-bearing ring collection flue gas, reclaim the dust, heat energy etc. containing valuable element, remove sulfur trioxide or acid mist, finally remove the sulfur dioxide in flue gas, discharge sulfur dioxide in flue gas can be reduced to below 20mg/Nm3, and the dilute sulfuric acid that by-product can be recycled returns process units use.
Description
Technical field
The utility model relates to the environmental technology field of Copper making industry, specifically for the device of Copper making ring collection flue gas desulfurization.
Background technology
Sulfur dioxide is the main pollution factor in atmosphere pollution, and the discharge of sulfur dioxide can cause acid rain, causes acidifying and corrosion, cause huge economic loss to water body, crops, environment, building etc.The high speed development of the nonferrous smelting industries such as China's copper, lead, zinc, nickel, bring serious sulfur dioxide pollution, carrying capacity of environment is difficult to bear, and the discharge standard of every profession and trade tightened step by step in recent years, bring restriction to the development of every profession and trade, the reduction of discharging of sulfur dioxide is day by day urgent.
Copper making industry ring collection flue gas because of large-minded, dust concentration is high, the sulfur dioxide concentration fluctuation problem such as large, existing sulfur removal technology is the method for abandoning, namely alkaline process, calcium method, magnesium oxide method etc. are adopted, exist outstanding problem be desulfuration efficiency not good enough, waste the Sulphur ressource in tail gas and create again three new waste products, commercial Application exist very large limitation.Especially the national standard that faced by, every profession and trade improves constantly and regional discharge standard requirement, above problem more needs to cause enterprise to pay attention to.
Peroxide passivation desulfurization is emerging high-efficiency desulfurization method, but directly apply to the flue gas desulfurization of Copper making industry ring collection, there is outstanding problem to have: in flue gas, the existence of dust impurities (heavy metal class etc.) easily causes decomposing hydrogen dioxide solution to lose and produces the possibility of explosion danger, by-product dilute sulfuric acid is not because recycling containing heavy metal or other impurity, in flue gas, sulfur trioxide or acid mist exceed standard, fume emission sense organ difference etc.
Utility model content
For the object solving the above problem, the utility model discloses a kind of method being applicable to the flue gas desulfurization of Copper making ring collection, with high-efficiency desulfurization, reduces and pollutes and comprehensive utilization of resources.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of Copper making ring collection fume desulphurization method, is characterized in that, said method comprising the steps of: 1) pre-treatment step: carry out pretreatment to the flue gas collected from Copper making production, 2) desulfurized step: will through pretreated flue gas input hydrogen peroxide desulfurizing tower, hydrogen peroxide is adopted to absorb the sulfur dioxide in flue gas as desulfurizing agent, produce the tail gas through desulfurization, and by-product dilute sulfuric acid is discharged, wherein in pre-treatment step, classification pretreatment is carried out to the flue gas collected, this step comprises flue gas cool-down and heat recovery and utilization, dust recycle and sulfur trioxide or acid mist purification in any one or any combination, in desulfurized step, hydrogen peroxide is adopted to carry out recycling elution to flue gas, content of sulfur dioxide in desulfidation tail gas is reduced to 20mg/Nm
3below.The hydrogen peroxide concentration adopted in desulfurized step is 0.01-70%, and in some embodiments, hydrogen peroxide concentration is preferably 0.01-10%, more preferably 0.01-1%, more preferably 0.01-0.1%.And in other embodiments, hydrogen peroxide concentration is preferably 27-70%, more preferably 27-50%.In our practical operation, lower hydrogen peroxide concentration can reach extraordinary desulfurized effect, and also have very large advantage to be exactly that hydrogen peroxide residual volume in by-product dilute sulfuric acid is extremely low, below detectability of being everlasting, this makes by-product sulfuric acid just can may be used for the application of some hydrogen peroxide sensitiveness through less process, expand the range of application of byproduct, there is higher value.And higher hydrogen peroxide concentration can be less operation can reach higher desulfurized effect, hydrogen peroxide itself is without the need to process, running cost is low, by-product sulfuric acid concentration is higher, but hydrogen peroxide residue amount can be higher, but be through reducing agent process and also can reach the object removing hydrogen peroxide residue, in the process that therefore by-product dilute sulfuric acid is discharged, also comprise the step that by-product dilute sulfuric acid is contacted with reducing agent.Thus adopt how high hydrogen peroxide concentration for concrete, the purposes that can set target and finished product according to desulfurization is accepted or rejected.Equally, after hydrogen peroxide desulfurization, by-product dilute sulfuric acid concentration can remain on 0-55%, preferred 10-40%, more preferably 25-30%.In addition, by-product dilute sulfuric acid can also be returned to pre-treatment step reuse at least partly, such as, as fresh water (FW), absorption water etc. as sulfur trioxide.
In the method, the classification pretreatment of flue gas comprises any one or any combination in following aspect:
For higher than the ring collection flue gas of 160 DEG C, adopt cooling measure, and recovered flue gas heat, by-product low-pressure steam reclaims the energy, and then carries out wet method tail gas desulfurization;
For dust higher than 10mg/Nm
3sulfur-bearing ring collection flue gas, take dry-method bag-type dust collecting or wet scrubbing dust suppression, the dust in ring collection flue gas be down to 10mg/Nm
3below, and then carry out wet method tail gas desulfurization;
For containing sulfur trioxide higher than 30mg/Nm
3ring collection flue gas, take pre-humidification, then adopt high-pressure electrostatic electrostatic precipitator that acid mist is reduced to 5mg/Nm
3below, then truncate desulfurization.
In desulfurized step, process hydrogen peroxide processed with stabilizing agent can also be comprised in the cyclic process of hydrogen peroxide, that is add in hydrogen peroxide and hydrogen peroxide cyclic process in driving, make hydrogen peroxide contact to make stabilized hydrogen peroxide with stabilizing agent.
The invention also discloses the device for above method, that is a kind of device for the flue gas desulfurization of Copper making ring collection, described device comprises Copper making ring collection Flue Gas Pretreatment Device and hydrogen peroxide desulfurizer, wherein Copper making ring collection Flue Gas Pretreatment Device comprises one or more in cleaning dust equipment, heat energy recovery equipment, humidification washing facility, defogging equipment, and hydrogen peroxide desulfurizer comprises hydrogen peroxide desulfurizing tower, desulfur pump, dioxygen tank, dioxygen water pump.
Wherein desulfur pump is responsible for circulation and the discharge of the absorbing liquid produced in hydrogen peroxide desulfurizing tower, preferably discharges on route at it and is also provided with reduction tower, for carrying out reduction treatment to the by-product dilute sulfuric acid produced in sweetening process.
Beneficial effect: the utility model and existing copper are smelted compared with the sulfur method that ring collection flue gas applies, can to classify the recovered flue gas energy: i.e. fully recovered flue gas heat, dust valuable element, elimination acid mist endangers, have that desulfuration efficiency is high, by-product can the dilute sulfuric acid of reuse, the advantages such as operating cost is low, workable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model Copper making ring collection flue tail gas desulfurizer.
In the drawings: 1, cleaning dust tower; 2, heat energy recovery equipment; 3, washing pump; 4, conditioning Tower; 5, be humidified washing pump; 6, electrostatic precipitator; 7, desulfurizing tower; 8, stabilizing agent device; 9, desulfur pump; 10, dioxygen water pump; 11, reduction tower; 12, dioxygen tank.
Detailed description of the invention
The purpose of this utility model is to provide Copper making ring collection fume desulphurization method and device, and first the method classifies and pretreatment to Copper making ring collection flue gas.
For higher than the ring collection flue gas of 160 DEG C, preferably adopt waste heat boiler recovered flue gas heat, byproduct steam reclaims the energy, more preferably adopts heat pipe boiler, reduces cold end corrosion, and then carries out wet method tail gas desulfurization.
For dust higher than 10mg/Nm
3sulfur-bearing ring collection flue gas take dry-method bag-type dust collecting or wet scrubbing dust suppression, the dust in ring collection flue gas is down to 10mg/Nm
3below, more preferably 5mg/Nm is reduced to
3below, and then carry out wet method tail gas desulfurization.The dust that this part dry method and wet method are collected takes collection, filter type is reclaimed, and has namely reclaimed the valuable element of dust, has again returned smelting system and do raw materials for metallurgy.
For containing sulfur trioxide higher than 30mg/Nm
3ring collection flue gas, take pre-humidification, then adopt high-pressure electrostatic electrostatic precipitator that acid mist is reduced to 5mg/Nm
3below, then tail gas desulfurization is carried out; Accordingly, for containing sulfur trioxide higher than 30mg/Nm
3ring collection flue gas, also directly first can carry out wet method tail gas desulfurization, after desulfurization, tail gas adopts high-pressure electrostatic electrostatic precipitator that acid mist in flue gas after desulfurization is reduced to 30mg/Nm again
3below, more preferably 5mg/Nm is reduced to
3below.
Tail gas is after above-mentioned classification pretreatment, and adopt peroxide passivation sulfur removal technology to carry out desulfurization, in sulfur-containing tail gas, content of sulfur dioxide can be reduced to 20mg/Nm
3below, reclaimed the dilute sulfuric acid of by-product, sour position is used in the acidleach, electrolysis etc. of the sulfuric acid apparatus or nonferrous smelting that all turn back to Copper making simultaneously.As mentioned above, through the classification pretreatment to ring collection flue gas, the existence eliminating dust impurities in flue gas (heavy metal etc.) easily causes decomposing hydrogen dioxide solution to lose and produces the possibility of explosion danger, and eliminates the problem of by-product dilute sulfuric acid because not recycling containing heavy metal or other impurity.
Nonferrous smelting ring collection fume desulphurization method comprises the following steps:
Step one, classification pretreatment, wherein comprises: flue gas cool-down and heat recovery and utilization, dust are recycled, the purification etc. of sulfur trioxide or acid mist;
For higher than the ring collection flue gas of 160 DEG C, as the gas melting furnace flue of Copper making, the measures such as surface-cooler heat radiation, spray cooling or boiler cooling can be adopted, preferred employing waste heat boiler recovered flue gas heat, by-product low-pressure steam reclaims the energy, more preferably adopt heat pipe boiler, reduce cold end corrosion, and then the method tail gas desulfurization that dries;
For dust higher than 10mg/Nm
3sulfur-bearing ring collection flue gas, the ring collection flue gas etc. of equipment operating mouth as each in Copper making, takes dry-method bag-type dust collecting or wet scrubbing dust suppression, the dust in ring collection flue gas is down to 10mg/Nm
3below, more preferably 5mg/Nm is reduced to
3below, and then the method tail gas desulfurization that dries;
For containing sulfur trioxide higher than 30mg/Nm
3ring collection flue gas, as earth of positive pole hydrometallurgy flue gas etc., take pre-humidification, then adopt high-pressure electrostatic electrostatic precipitator that acid mist is reduced to 5mg/Nm
3below, then truncate desulfurization; Accordingly, for containing sulfur trioxide higher than 30mg/Nm
3ring collection flue gas, also can directly to wet method tail gas desulfurization, after desulfurization, tail gas adopts high-pressure electrostatic electrostatic precipitator that acid mist in flue gas after desulfurization is reduced to 5mg/Nm again
3below;
When certain ring collection flue gas possesses two or more feature simultaneously, above pretreated two or more method can be taked, to meet the needs of follow-up desulfurization to flue gas condition.
Step 2, desulfurization, comprises the recycling of desulfurization and dilute sulfuric acid.In desulphurization plant, adopt hydrogen peroxide to carry out desulfurization to ring collection flue gas after above-mentioned pretreatment.Desulfurizing tower can adopt packed tower, void tower or hypergravity machine etc. to be conducive to the safe and reliable equipment of efficient mass transfer absorption.Hydrogen peroxide concentration can select 0.01-10%, preferred 0.01-1%, more preferably 0.01-0.1%.Dilute sulfuric acid concentration can remain on 0-55%, preferred 10-40%, more preferably 25-30%.
The utility model carries out classification pretreatment by Copper making to ring collection flue gas, reclaims heat energy and valuable element, eliminates acid mist, and then adopts the further scrubbing CO_2 of peroxide passivation sulfur removal technology, and reclaim utilizable dilute sulfuric acid.
The utility model and existing copper are smelted compared with the sulfur method that ring collection flue gas applies, can to classify the recovered flue gas energy: i.e. fully recovered flue gas heat, dust valuable element, elimination acid mist endangers, have that desulfuration efficiency is high, by-product can the dilute sulfuric acid of reuse, the advantages such as operating cost is low, workable.
Below in conjunction with accompanying drawing and example, the utility model is further illustrated.
Fig. 1 is device flow chart of the present utility model, and signal has marked point kind processing device and the peroxide passivation desulfurizer of ring collection flue gas in FIG.
Classification treatment step comprise the ring collection flue gas (as Copper making industry) containing dust, higher temperature or higher sulfur trioxide or acid mist adopted respectively or simultaneously gather dust, lower the temperature, the classification processing method of acid-mist-removing measure, to meet the technology needs of follow-up peroxide passivation tail gas desulfurization process unit.First the ring collection flue gas that dust-laden is higher enters cleaner cleaning dust tower 1, after being separated dust, have dust reclaimer by the dust collection containing valuable element, recovery, turns back to during nonferrous smelting is produced and goes; The ring collection flue gas of higher temperature, enters heat energy recovery equipment 2 or cooling system, flue-gas temperature is reduced to less than 160 degrees Celsius; Ring collection flue gas containing higher sulfur trioxide or acid mist enters conditioning Tower 4, after humidification, enters electrostatic precipitator 6, the sulfuric acid mist in high-pressure electrostatic effect removing flue gas; After classification process, flue gas enters peroxide passivation tail gas desulfurization device, through hydrogen peroxide cyclic absorption, reclaims and obtains the dilute sulfuric acid of 0-55%, is transported to nonferrous smelting sulfuric acid apparatus or sour position is used in acidleach, electrolysis etc.Peroxide passivation tail gas desulfurization device comprises desulfurizing tower 7, dioxygen tank 12 and dioxygen water pump 10.In some cases, the bottom of desulfurizing tower 7 is also provided with stabilizing agent device 8.In other cases, sulfuric acid discharge line is also provided with reduction tower 11.
The effect of stabilizing agent device 8 is, for making hydrogen peroxide absorbing liquid that is that add or circulation contact with stabilizing agent, to play the Undec object of Stabilizing Hydrogen Peroxide.As previously mentioned, ring collection flue gas contains a lot of impurity, causes hydrogen peroxide desulfurization unstable, even blasts.For making hydrogen peroxide sweetening process carry out sustainedly and stably, on the one hand pretreatment being carried out to flue gas, also will keep the stable of hydrogen peroxide on the other hand.Stabilizing agent device can adopt various ways, and such as in one embodiment, stabilizing agent device is a pipeline, and pipeline tapping is at circulating slot, and the pipeline other end is connected with stabilizing agent source.When needing, stabilizing agent adds in circulating slot by this pipeline tapping by stabilizing agent source, and namely the stabilizing agent added contacts with hydrogen peroxide and reach stable object.In another case, hold the stabilizing agent for preventing decomposing hydrogen dioxide solution in stabilizing agent device, when needing, stabilizing agent device is opened, and stabilizing agent is discharged in circulating slot.Both of these case is all stabilizing agent release, reaches stabilizing agent and contacts with hydrogen peroxide.The stabilizing agent worked in this way can be liquid or solid-state, such as stabiliser solution or graininess stabilizing agent.Stabilizing agent can adopt the various reagent that can prevent decomposing hydrogen dioxide solution.In general, hydrogen peroxide is more stable under faintly acid and neutrallty condition, and activates in the basic conditions, can fast decoupled under heavy metal ion exists.Relate to adopt in the field of hydrogen peroxide application hydrogen peroxide can be stoped uncontrolledly to decompose added reagent be called hydrogen peroxide stabilizer.The type of hydrogen peroxide stabilizer has multiple, such as absorbent-type, chelating type or mixed type etc., and heavy metal ion can be isolated by modes such as absorption and chelatings by they, avoids affecting hydrogen peroxide product.Conventional hydrogen peroxide stabilizer also has the types such as siliceous or not siliceous.Siliceous stabilizer package is containing the such as silicate such as sodium metasilicate, magnesium silicate stabilizing agent, and they have excellent adsorption capacity, have good physical and chemical adsorption characteristic to metal ion, thus reduces the catalytic action of metal ion.Not siliceous stabilizer package is containing types such as such as soaps.Also have macromolecule stabilizer, they form large scale structure by forming macromolecule network structure, have very strong suction-operated, and can be obtained by finishing and well adsorb isolation effect.Some conventional small molecule chelators are also conventional hydrogen peroxide stabilizers, they are coordinated with macromolecule, can obtain good stabilized hydrogen peroxide effect.Chelating type stabilizing agent is generally multivalence organic acid or its salt, such as carboxylate, phosphonate etc.Hydrogen peroxide stabilizer can be buied from suppliers, such as, purchased from the ST-1/2 stabilizing agent of Jiangsu Cheng Tian Environmental Protection Technology Co., Ltd, also oneself can prepare, such as, adopts EDTA to carry out Stabilizing Hydrogen Peroxide as chelating agent.Such as, or stabilizing agent adopts the stabilizing agent that is fixed on carrier or stabilizing agent itself to be the solid-state stabilizing agents of macromolecule, waterglass and polyacrylamide amine stabiliser.In this case, stabilizing agent is contained in stabilizing agent device, and stabilizing agent device is when needed in opening kenel or be open kenel always, and when making to need, hydrogen peroxide can contact with stabilizing agent, reaches the Undec object of Stabilizing Hydrogen Peroxide.
Stabilizing agent device 8 is arranged on bottom circulating slot, is buried in absorbing liquid, after allocating hydrogen peroxide solution into, plays the object that Stabilizing Hydrogen Peroxide does not decompose in initial driving circulating slot.During driving, by the stabilizing agent in stabilizer and the hydrogen peroxide obtain solution entering devulcanizer first simultaneously or inserted before hydrogen peroxide in circulating slot, play the effect of Stabilizing Hydrogen Peroxide obtain solution.And stabilizing agent is by always along with circulating in devulcanizer of liquid is circulated, and do not need other interpolation, or can add again after operation a period of time yet, with stabilizer concentration certain in ensureing to circulate.
The dilute sulfuric acid separated, before discharge, preferably also enters reduction tower 11 and processes.The reducing agent for decomposing remaining hydrogen peroxide in by-product dilute sulfuric acid is accommodated in reduction tower.For holding the container that the reduction tower of reducing agent is non-metallic material making, inside is filled with the reducing agent material that can decompose remaining hydrogen peroxide in dilute sulfuric acid, is equipped with liquid inlet, liquid outlet and gas discharge outlet; Dilute sulfuric acid containing remaining hydrogen peroxide enters from liquid inlet, and be sprayed at above the inner reducing agent loaded, remaining hydrogen peroxide is broken down into water and oxygen is emptying from gas discharge outlet, and liquid is discharged from liquid outlet.Decomposing hydrogen dioxide solution is and foregoing stabilization opposite effect, as long as the reagent that therefore can accelerate decomposing hydrogen dioxide solution can be used as reducing agent used herein, preferably through fixing catalyst, such as metal oxide bed, such as with the Solid Bed that the material comprising manganese dioxide-catalyst is made, described reducing agent is such as purchased from the ST-1 reducing agent of Jiangsu Cheng Tian Environmental Protection Technology Co., Ltd.
Specific embodiment:
Certain cupper smelting, ring collection flue gas is made up of following a few part, the environmental protection flue gas of (1) each equipment operating mouth, tolerance 320000Nm
3/ h, temperature 40 DEG C, dust-laden 30mg/Nm
3, sulfur dioxide 400mg/Nm
3; (2) the ring collection flue gas of smelting furnace, tolerance 22000Nm
3/ h, temperature 180 DEG C, dust-laden 200mg/Nm
3, sulfur dioxide 8000mg/Nm
3; (3) earth of positive pole pyrogenic process baking flue gas, tolerance 20000Nm
3/ h, temperature 40 DEG C, sulfur dioxide 2000mg/Nm
3; (4) earth of positive pole hydrometallurgy flue gas, tolerance 20000Nm
3/ h, temperature 40 DEG C, sulfur dioxide 2000mg/Nm
3.
For (1), the ring collection flue gas of each equipment operating mouth and gas melting furnace flue, exhaust gas volumn is large, dust concentration is higher, dust total amount is comparatively large, takes to arrange spray scrubber measure, wet scrubbing dedusting, after gathering dust wash cycle also in dust by precipitate or solid containing valuable element is isolated in filter press press filtration measure, turn back to the reuse of nonferrous smelting feed proportioning.
For (2) melting ring collection flue gas, the flue-gas temperature of 180 DEG C of smelting furnace is higher, arranges heat pipe boiler, recovered flue gas heat energy, the saturated vapor of by-product 0.5MPa;
For (3) earth of positive pole pyrogenic process baking flue gas, only there is sulfur dioxide component, can directly to peroxide passivation desulfurizer.
For (4) earth of positive pole hydrometallurgy flue gas, high containing sulfur trioxide, humidifier is set to flue gas spray humidification, then enters high-pressure electrostatic electrostatic precipitator and acid mist is reduced to 5mg/Nm
3below.
Above flue gas is after classification process, and be mixed into peroxide passivation desulfurizer entrance, flue gas enters in peroxide passivation absorption tower, with the sulfur dioxide absorbed containing hydrogen peroxide liquid-circulating in flue gas, reaction generation 25% dilute sulfuric acid, the dry absorption section of part conveying acid accumulator plant, part is transported to electrolysis workshop section.
After peroxide passivation desulfurization, tail gas sulphur dioxide is less than 20mg/Nm
3, emptying through emptying chimney.
By reference to the accompanying drawings embodiment of the present utility model is described in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make a variety of changes under the prerequisite not departing from the utility model aim.
Claims (2)
1. the device for the flue gas desulfurization of Copper making ring collection, it is characterized in that, described device comprises Copper making ring collection Flue Gas Pretreatment Device and hydrogen peroxide desulfurizer, wherein Copper making ring collection Flue Gas Pretreatment Device comprises one or more in cleaning dust equipment, heat energy recovery equipment, humidification washing facility, defogging equipment, and hydrogen peroxide desulfurizer comprises hydrogen peroxide desulfurizing tower, desulfur pump, dioxygen tank, dioxygen water pump.
2. as claimed in claim 1 for the device of Copper making ring collection flue gas desulfurization, it is characterized in that, desulfur pump is responsible for circulation and the discharge of the absorbing liquid produced in hydrogen peroxide desulfurizing tower, wherein on discharge route, be also provided with reduction tower, for carrying out reduction treatment to the by-product dilute sulfuric acid produced in sweetening process.
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| CN201520296552.1U CN204619726U (en) | 2015-05-11 | 2015-05-11 | Copper making ring collection flue gas desulfur device |
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|---|---|---|---|
| CN201520296552.1U CN204619726U (en) | 2015-05-11 | 2015-05-11 | Copper making ring collection flue gas desulfur device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664693A (en) * | 2016-01-15 | 2016-06-15 | 赤峰富邦铜业有限责任公司 | Sulfuric acid tail gas desulphurization apparatus by oxidation process and usage method thereof |
| CN106606924A (en) * | 2015-10-22 | 2017-05-03 | 江苏澄天环保科技有限公司 | Desulphurization method and apparatus for sulfur-containing tail gas from rotary volatilizing kiln |
| CN108502848A (en) * | 2018-05-14 | 2018-09-07 | 山东方泰循环金业股份有限公司 | A kind of technique preparing sulfuric acid using copper blast furnace off-gas |
| CN109173681A (en) * | 2018-11-14 | 2019-01-11 | 王鹏 | A kind of desulfurizing industrial fume technique |
-
2015
- 2015-05-11 CN CN201520296552.1U patent/CN204619726U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106606924A (en) * | 2015-10-22 | 2017-05-03 | 江苏澄天环保科技有限公司 | Desulphurization method and apparatus for sulfur-containing tail gas from rotary volatilizing kiln |
| CN105664693A (en) * | 2016-01-15 | 2016-06-15 | 赤峰富邦铜业有限责任公司 | Sulfuric acid tail gas desulphurization apparatus by oxidation process and usage method thereof |
| CN108502848A (en) * | 2018-05-14 | 2018-09-07 | 山东方泰循环金业股份有限公司 | A kind of technique preparing sulfuric acid using copper blast furnace off-gas |
| CN109173681A (en) * | 2018-11-14 | 2019-01-11 | 王鹏 | A kind of desulfurizing industrial fume technique |
| CN109173681B (en) * | 2018-11-14 | 2021-03-23 | 台州临港热电有限公司 | Industrial flue gas desulfurization process |
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Effective date of registration: 20151207 Address after: 210047 Jiangsu, Nanjing, Liuhe District, No. 2, No. 158, No. Patentee after: JIANGSU CHENGTIAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 247, room 158, 210047, Tai Fang Road, Nanjing chemical industry park, Jiangsu Patentee before: Nanjing company limited of institute of Cheng Tian Research of Environmental Sciences |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20180511 |