CN105561750A - Manganese ore slurry and microorganism integrated flue gas desulfurization and denitrification method - Google Patents
Manganese ore slurry and microorganism integrated flue gas desulfurization and denitrification method Download PDFInfo
- Publication number
- CN105561750A CN105561750A CN201510974870.3A CN201510974870A CN105561750A CN 105561750 A CN105561750 A CN 105561750A CN 201510974870 A CN201510974870 A CN 201510974870A CN 105561750 A CN105561750 A CN 105561750A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- manganese ore
- ore slurry
- manganese
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/507—Sulfur oxides by treating the gases with other liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/126—Semi-solid reactants, e.g. slurries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a flue gas desulfurization and denitrification method. The method includes: using manganese ore slurry for absorbing discharged flue gas to remove smoke dust, sulfur dioxide and other easily-soluble impurities, and feeding the purified flue gas into a biological filter to carry out further treatment for controlling contents of sulfur dioxide and nitrogen oxides in the treated flue gas to be lower than emission standards. According to the method, dedusting, desulfurization and denitrification of the flue gas are completed in one system by feeding the flue gas into a manganese ore slurry containing bubble tower to realize desulfurization, purification and dedusting and then feeding tail gas into a biological trickling filter for denitrification. The flue gas desulfurization and denitrification method has the advantages that by adoption of the manganese ore slurry for pretreatment of the flue gas, water-soluble matters are removed, and quality control of the gas fed into the biological filter is realized to minimize influences of impurities in the gas on a biological reaction system; in addition, the gas humidified and cooled through manganese ore slurry reaction can be directly fed into the biological trickling filter, so that cost control and simplification of biological filter operation steps are realized.
Description
Technical field
The invention belongs to flue gases purification field, be specifically related to a kind of flue gas desulfurization and denitration method.
Technical background
China is coal dependent form country, and people's lives and industrial main energy sources source are based on coal.The sulfur dioxide contained in combustion tail gas and nitrogen oxide not only cause serious environmental pollution, also create threat to human health.China is also further strict to the improvement that fire coal tail gas discharges, and " 12 " outline not only increases the limitation standard of sulfur dioxide (SO2) emissions, also specifies the discharge restriction of nitrogen oxide simultaneously.For sulfur dioxide in fire coal tail gas and nitrogen oxide process always because of process costs and intellectual property restriction and fairly large applying cannot be realized.Fire coal tail gas discharge has become the barrier of restriction China's sustainable economic development and Cost Control.
China contains the manganese resource of rich reserves, but high grade ore reserves are little, and the overwhelming majority is poor value, and existing technique cannot process on economic environmental protection ground.These low-grade mine tailings and slag are stacked for a long time and are not only caused the wasting of resources, also cause serious heavy metal environmental pollution.How effectively to develop this kind of resource, be the problem that cannot ignore.
Manganese ore is to the SO in flue gas
2have good assimilation effect, its absorbing liquid also can be used for preparing the valuable chemical products such as manganese sulfate monohydrate or elemental sulfur further.But the NO in flue gas, NO
2deng nitrogen oxide, because it is water-soluble poor, cannot in manganese ore absorption system direct efficient removal.
It is a kind of very ripe pollutant purification treatment facility that microorganism drips filter tower, with low cost, investment operating cost few, by the different microorganisms type decided processing capacity be attached on filler.The metabolism of denitrifying microorganism to nitrogen oxide is a kind of denitration technology not producing itrated compound secondary pollution and clean.But the impact that bio-trickling filter is vulnerable to sulfur dioxide in flue gas and other materials causes removal efficiency unstable.
Summary of the invention
The object of this invention is to provide a kind of flue gas desulfurization and denitration method, namely manganese ore slurry is first utilized to absorb going out kiln gas, after getting rid of flue dust, sulfur dioxide and other easy molten impurity, flue gas after sublimate is passed in biofilter and is further processed, thus makes the content of the sulfur dioxide in flue gas after process and nitrogen oxide lower than the standard of discharge.
Method of the present invention is that first the bubble tower passed into by flue gas containing manganese ore slurry carries out desulfurization and purifying and dedusting, and tail gas enters bio-trickling filter again and carries out denitration, to reach the dedusting and desulphurization denitration that realize flue gas in a set of system.
The absorption system that described manganese ore slurry absorption system is made up of 0.5%-10% manganese ore and water, type of reactor is bubble absorbing tower; Manganese ore can be manganese carbonate ore, pyrolusite, manganese mud and electrolytic manganese waste residue, grade more than 0.5.
Described packing layer is the physics filler of inoculation denitrifying bacterium, also can be with the material immobilized microorganism fungus kind such as sodium alginate, PVA; Microorganism fungus kind can be that Pseudomonas belongs to, Alcaligene belongs to, Paracoccus genus, Hyphomicrobium belong to and have the bacterial classification of denitrification function in Klebsiell genus.
This technology utilization manganese ore slurry carries out pretreatment to flue gas, remove water-soluble substances, achieve the quality control to passing into biofilter gas, the impact of impurity in gas on biological respinse system is controlled minimum, gas simultaneously through manganese ore slurry reaction humidification and cooling directly can pass into bio-trickling filter, achieves simplification and the cost control of biofilter operating procedure.
Accompanying drawing explanation
Fig. 1: flow chart of the present invention;
The desulfuration efficiency of Fig. 2, different manganese ore absorption system;
Fig. 3, manganese ore slurry denitration efficiency;
Fig. 4, bio-trickling filter removal effect.
Detailed description of the invention
Flue gas used is formed by various calibrating gas premix, consists of oxygen 0-19%, sulfur dioxide 0.1-0.8g/m
3, nitrogen oxide 0.1-0.4g/m
3.Manganese ore slurry absorption tower adopts bubbling type reaction unit, and the manganese ore grade of employing is 1-25, and pulp density is 0.1%-19%, and stir speed (S.S.) is 50rpm-200rpm, and absorption system is 0.7-7L manganese ore slurry, and induction air flow ratio is 0.12m
3/ h-1.8m
3/ h, system pressure drop 7KPa.
Bio-trickling filter adopts countercurrent reaction, and dischargeable capacity is 3L-30L.Tail gas after manganese ore slurry absorbs enters bio-trickling filter with the speed of 1.6L/min-24L/min from tower bottom, introduce from bottom to up and drip filter tower, time of staying 2s-18s, biological cycle absorbing liquid enters from top to bottom and drips filter tower, spray flux is 0.1-1/L, both meet at biologic packing material layer, react.
Bio-trickling filter adopts pyramidal structure, runs below to stream mode.Middle laying haydite is packing layer, and lower vessel portion establishes collecting-tank to connect water pump, is extracted out by liquid, after water pump lifting, spray downwards from container top from container bottom; The flue gas absorbed after process through pyrolusite pulp enters from container top, from top to bottom by after packing layer, discharges tail gas by container side.
The packing layer of bio-trickling filter inoculates a certain proportion of immobilized microorganism or the denitrifying microorganism through biofilm, the simulated flue gas passed into continuously after manganese ore slurry absorbs is tamed, filter bed water content control is at 40%-60%, and operating temperature is 15-40 degree, system pH7 ~ 8.Separately material-feeding port is established, nutrient turnover salt, to meet needed for microorganism normally works at container top.Discharge the composition transfer of tail gas with flue gas analysis systems axiol-ogy, after the removal efficiency of sulfur dioxide in flue gas and nitrogen oxide is stable, be considered as domestication and complete, can start working, mode of operation is identical with the pattern of domestication.
Embodiment 1: manganese ore slurry absorption tower is to simulated flue gas clean-up effect
Manganese ore slurry absorption system is to SO in flue gas
2removal effect very good, in the experiment of different manganese ore type and grade, the removal efficiency (Fig. 2) of more than 95% can be maintained in a long time, but 45% (Fig. 3) can only be reached for the removal efficiency of nitrogen oxide.
Embodiment 2, bio-trickling filter assimilation effect
The bio-trickling filter of isolated operation is when bringing into operation, and the efficiency of desulfurization and denitration is all higher, but along with the prolongation in reaction time, is subject to SO
2the impact of acid system, greatly inhibits the vigor of denitrifying microorganism, declines (Fig. 4) while causing desulfurization and denitration effect.
Embodiment 3, pyrolusite absorb in conjunction with bio-trickling filter
Simulated flue gas concentration of component is SO
20.689g/m3, NOx0.541g/m3, oxygen partial pressure 19.1%, first flue gas carries out desulphurization reaction through pyrolusite absorption system, and tail gas afterwards enters bio-trickling filter again and carries out denitration reaction, and system runs 35 days continuously, SO in tail gas
2concentration stabilize is at 1-1.5mg/m3, and removal efficiency is more than 99%, and the concentration of NOx is floated in 80-100mg/m3 scope, and average removal efficiency can reach more than 80%.
Claims (3)
1. a flue gas desulfurization and denitration method, is characterized in that, described method is that first the bubble tower passed into by flue gas containing manganese ore slurry carries out desulfurization and purifying and dedusting, and tail gas enters bio-trickling filter again and carries out denitration.
2. the method for claim 1, is characterized in that, the absorption system that described manganese ore slurry absorption system is made up of 0.5%-10% manganese ore and water, and type of reactor is bubble absorbing tower; Manganese ore is on manganese carbonate ore, pyrolusite, manganese mud and electrolytic manganese waste residue.
3. the method for claim 1, is characterized in that, described described packing layer is the physics filler of inoculation denitrifying bacterium, also can be with the material immobilized microorganism fungus kind such as sodium alginate, PVA; Microorganism fungus kind is that Pseudomonas belongs to, Alcaligene belongs to, Paracoccus genus, Hyphomicrobium belong to and have the bacterial classification of denitrification function in Klebsiell genus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974870.3A CN105561750A (en) | 2015-12-23 | 2015-12-23 | Manganese ore slurry and microorganism integrated flue gas desulfurization and denitrification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974870.3A CN105561750A (en) | 2015-12-23 | 2015-12-23 | Manganese ore slurry and microorganism integrated flue gas desulfurization and denitrification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105561750A true CN105561750A (en) | 2016-05-11 |
Family
ID=55872712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510974870.3A Pending CN105561750A (en) | 2015-12-23 | 2015-12-23 | Manganese ore slurry and microorganism integrated flue gas desulfurization and denitrification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105561750A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031255A (en) * | 2017-12-14 | 2018-05-15 | 贵州大龙汇成新材料有限公司 | It is a kind of to remove sulfur dioxide in flue gas and the method for extracting sulfuric acid manganese solution with manganese carbonate ore |
| CN108855124A (en) * | 2018-07-11 | 2018-11-23 | 武汉理工大学 | A method of SCR denitration is prepared with manganese ore using steel-making sintering ash |
| CN115634522A (en) * | 2022-10-20 | 2023-01-24 | 云南曲靖钢铁集团呈钢钢铁有限公司 | Environment-friendly energy-saving type deep purification system and method for flue gas of belt type sintering machine |
| CN117599602A (en) * | 2024-01-22 | 2024-02-27 | 江苏华星东方电力环保科技有限公司 | Flue gas desulfurization and denitrification treatment device and treatment process |
-
2015
- 2015-12-23 CN CN201510974870.3A patent/CN105561750A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031255A (en) * | 2017-12-14 | 2018-05-15 | 贵州大龙汇成新材料有限公司 | It is a kind of to remove sulfur dioxide in flue gas and the method for extracting sulfuric acid manganese solution with manganese carbonate ore |
| CN108855124A (en) * | 2018-07-11 | 2018-11-23 | 武汉理工大学 | A method of SCR denitration is prepared with manganese ore using steel-making sintering ash |
| CN108855124B (en) * | 2018-07-11 | 2021-03-23 | 武汉理工大学 | Method for preparing SCR denitration catalyst by utilizing steelmaking sintering ash and manganese ore |
| CN115634522A (en) * | 2022-10-20 | 2023-01-24 | 云南曲靖钢铁集团呈钢钢铁有限公司 | Environment-friendly energy-saving type deep purification system and method for flue gas of belt type sintering machine |
| CN117599602A (en) * | 2024-01-22 | 2024-02-27 | 江苏华星东方电力环保科技有限公司 | Flue gas desulfurization and denitrification treatment device and treatment process |
| CN117599602B (en) * | 2024-01-22 | 2024-05-24 | 江苏华星东方电力环保科技有限公司 | Flue gas desulfurization and denitrification treatment device and treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pandey et al. | Flue gas desulfurization: physicochemical and biotechnological approaches | |
| CN101502744B (en) | Method for removing acid gases in flue gas using red mud as absorbing agent | |
| CN100391579C (en) | Method for desulfurizing waste gas and reutilizing sulfur source | |
| CN101554561B (en) | Technical method for combining deamination and desulfurization | |
| CN104324575B (en) | A kind of system of spray absorber formula sintering flue gas and desulfurizing and denitrifying | |
| CN102343203B (en) | Method for purifying harmful substances in smoke produced by combustion of boiler | |
| CN105561750A (en) | Manganese ore slurry and microorganism integrated flue gas desulfurization and denitrification method | |
| CN109593953B (en) | Method for synergistic resource utilization of semidry desulfurization ash and titanium dioxide byproduct copperas | |
| WO2014005227A1 (en) | Slag stabilization with captured carbon dioxide | |
| CN103303877A (en) | Comprehensive multi-gas source low-concentration SO2 fume recycling acid-making technological process | |
| CN103894047A (en) | Flue gas pollutant control integrated purifying and recycling process | |
| CN103977679A (en) | Grading oxidation and absorption type method for simultaneous desulphurization and denitration of sintering flue gas, and system | |
| CN203790810U (en) | Device for simultaneously desulfurizing and denitrifying flue gas by using magnesium oxide according to wet process | |
| CN105561755B (en) | A kind of clean flue gas biological desulphurization method of denitration and device | |
| CN103585869A (en) | Flue gas purifying method with recyclable alkali absorption liquid | |
| CN102847430B (en) | System and technology for cleaning flue gas | |
| CN103877841A (en) | Integrated purification and recycling process for sintering smoke pollutants | |
| CN206762618U (en) | A kind of dry-wet integratedization desulfuring and denitrifying apparatus | |
| CN105268294A (en) | Double-tower double-circulation wet oxidation and catalysis combined removal system and method | |
| CN218944751U (en) | Coal-fired flue gas treatment system | |
| CN107398165A (en) | A kind of desulfurizing and denitrifying process of boiler smoke | |
| CN103611405A (en) | Method for simultaneously preparing polyferric flocculant and desulfurizing flue gas | |
| CN107398171A (en) | A kind of method that acid gas in flue gas is removed using metal tailings | |
| CN107970759B (en) | Adsorbing and recovering CO in high-sulfur-content flue gas2Method (2) | |
| CN215585954U (en) | Device for desulfurizing, removing mercury and decarbonizing flue gas of lead-zinc smelting volatilization kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |