CN107774074B - 一种低温同时脱硫脱硝的旋转喷雾系统及方法 - Google Patents
一种低温同时脱硫脱硝的旋转喷雾系统及方法 Download PDFInfo
- Publication number
- CN107774074B CN107774074B CN201610728569.9A CN201610728569A CN107774074B CN 107774074 B CN107774074 B CN 107774074B CN 201610728569 A CN201610728569 A CN 201610728569A CN 107774074 B CN107774074 B CN 107774074B
- Authority
- CN
- China
- Prior art keywords
- spray tower
- tank
- pipeline
- flue gas
- spray
- 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.)
- Active
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 60
- 230000023556 desulfurization Effects 0.000 title claims abstract description 60
- 238000005507 spraying Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 41
- 239000007921 spray Substances 0.000 claims abstract description 99
- 239000003546 flue gas Substances 0.000 claims abstract description 45
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 33
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 33
- 239000004571 lime Substances 0.000 claims abstract description 33
- 239000000428 dust Substances 0.000 claims abstract description 27
- 238000012806 monitoring device Methods 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims description 30
- 239000002002 slurry Substances 0.000 claims description 27
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- SMDQFHZIWNYSMR-UHFFFAOYSA-N sulfanylidenemagnesium Chemical compound S=[Mg] SMDQFHZIWNYSMR-UHFFFAOYSA-N 0.000 claims description 3
- 230000029087 digestion Effects 0.000 abstract description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 12
- 239000011575 calcium Substances 0.000 description 7
- 239000000395 magnesium oxide Substances 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012717 electrostatic precipitator Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Images
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
-
- 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
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—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
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—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
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
本发明公开一种低温同时脱硫脱硝的旋转喷雾系统,包括电除尘器,喷淋塔,喷淋喷头,搅拌桨,脱硝剂罐,泵,PH值监测设备,阀门,脱硫剂罐,石灰消化罐,旋转喷雾塔,布袋除尘器,出口烟气监测设备;电除尘器通过管路连接喷淋塔,喷淋塔内部设有喷淋喷头,喷淋塔顶部通过管路连接旋转喷雾塔,旋转喷雾塔通过管路连接布袋除尘器和出口烟气监测设备,喷淋塔底部通过管路连接石灰消化罐,石灰消化罐上部通过管路连接脱硫剂罐,下部通过管路连接旋转喷雾塔;喷淋塔与石灰消化罐之间的管路设有PH值监测设备和阀门;脱硝剂罐底部通过管路连接喷淋塔中的喷淋喷头,脱硝剂罐与喷淋塔间的管路、喷淋塔与石灰消化罐间的管路,两者之间相通并设有泵。
Description
技术领域
本发明属于工业烟气脱硫脱硝的环境保护技术领域,特别涉及到一种低温同时脱硫脱硝的旋转喷雾系统及方法。
背景技术
我国“十二五”规划要求2015年1月1日起所有钢铁企业运行的烧结机的烧结烟气氮氧化物排放小于300mg/m3。目前烧结烟气大多都已经进行了脱硫处理工艺,而脱硝工艺很少应用在烧结上。目前成熟的脱硝工艺多为SCR法,SCR工艺需要的温度区间大多在200℃~450℃,烧结烟气如果脱硫以后再脱硝则需要对烟气加热,成本太高企业难以实现。因此,更加经济实用的同时脱硫脱硝工艺研究已经势在必行。
随着越来越来的脱硫工艺在烧结烟气上的应用,半干法脱硫工艺逐渐显现出优势,与湿法脱硫工艺相比,不产生腐蚀也不产生液体的脱硫副产物,减少了脱硫副产物的二次处理工序,大大减少了设备维护和工人的劳动强度。
通过查新,可以检索到一些相关专利。有人在氧化镁法脱硫工艺的基础上加入金属氧化物,达到同时脱硫脱硝的目的。如专利(申请号CN201210332616.X)“一种脱硫脱硝组合物、制备方法及其用途”。该发明公开了一种脱硫脱硝组合物、制备方法及其用途。所述脱硫脱硝组合物包括以下组分:MgO、SiO2、CaO、Fe2O3、Al2O3、CuO和MnO2,任选地包括强氧化剂KMnO4。使用该发明的脱硫脱硝组合物,可在烟气脱硫过程中同步脱除NOx,脱硫脱硝效率得到提高。与钙法脱硫相比,优点是能进行同时脱硫脱硝,缺点是脱硫剂成本较钙法脱硫高,并且属于湿法脱硫工艺,需要对脱硫后废水进行处理。
专利(公布号CN103446873A)“一种高浓度SO2烧结烟气的脱硫净化方法及设备”该发明涉及一种高浓度SO2烧结烟气的脱硫净化方法及设备,采用双塔串联,两级脱硫方式,其脱硫工艺流程为:烧结烟气—静电除尘器—主抽风机—脱硫塔一—换热器—脱硫塔二—脉冲袋式除尘器—增压风机—烟囱—外排,在烧结主抽风机后设置两个旋转喷雾干燥脱硫塔,高浓度SO2烟气通过两级脱硫后,再经过袋式除尘器及增压风机达标外排。本发明的优点是:采用双塔串联、两级脱硫工艺,解决了高浓度SO2烧结烟气的脱硫问题,具有常规旋转喷雾干燥脱硫工艺脱硫效率高、浆液量自动调节、水耗低、运行阻力小、操作维护方便、对烧结工况适应性强、对脱硫剂的品质要求不高、副产物可综合利用等优点。但是该专利没有脱硝的作用。
综上所述,现有的镁法脱硫脱硝工艺属于湿法,对副产物需要二次处理,增加运行成本。现有的旋转喷雾脱硫工艺不能完全满足烧结烟气同时脱硫脱硝,需要发明出同时脱硫脱硝工艺。
发明内容
本发明所要解决的技术问题是提供一种低温脱硫脱硝的旋转喷雾系统及工艺,可以在脱硫的同时达到脱硝的目的,不需要将烟气再次加热以满足脱硝条件,运行成本低廉,特别适合烧结烟气的脱硫脱硝。
本发明目的是通过下面的技术方案实现的:
一种低温同时脱硫脱硝的旋转喷雾系统,其特征在于:包括电除尘器,喷淋塔,喷淋喷头,搅拌桨,脱硝剂罐,泵,PH值监测设备,阀门,脱硫剂罐,石灰消化罐,旋转喷雾塔,布袋除尘器,出口烟气监测设备;电除尘器通过管路连接喷淋塔,喷淋塔内部设有喷淋喷头,喷淋塔顶部通过管路连接旋转喷雾塔,旋转喷雾塔通过管路连接布袋除尘器和出口烟气监测设备,喷淋塔底部通过管路连接石灰消化罐,石灰消化罐上部通过管路连接脱硫剂罐,下部通过管路连接旋转喷雾塔;喷淋塔与石灰消化罐之间的管路设有PH值监测设备和阀门;脱硝剂罐底部通过管路连接喷淋塔中的喷淋喷头,脱硝剂罐与喷淋塔间的管路、喷淋塔与石灰消化罐间的管路,两者之间相通并设有泵。
一种低温同时脱硫脱硝的旋转喷雾系统的脱硫脱硝方法,其特征在于:烧结烟气通过电除尘器进入喷淋塔,脱硝剂罐内的脱硝剂通过喷淋喷头与烧结烟气在喷淋塔内反应,烧结烟气中的SO2与NO2溶于脱硝剂浆液中,形成亚硫酸,亚硝酸,硝酸等酸液;反应后的浆液经过搅拌桨搅拌后通过下部管路流入石灰消化罐内,与脱硫剂罐流出的脱硫剂混合后一起作为脱硫剂进入旋转喷雾塔内;氧化后的烧结烟气通过上部管路进入旋转喷雾塔内与脱硫剂反应,经过旋转喷雾塔与布袋除尘器后排放;通过PH值监测设备与阀门联合控制,将浆液返回喷淋喷头处继续与烟气反应或者将浆液放入石灰消化罐内,如果PH值大于4.5,用泵6将浆液返回喷淋塔由喷淋喷头喷出;如果PH值小于4.5,则打开阀门,将浆液放入石灰消化罐内。
脱硝剂的成分为MgO、CuO、MnO2、NaClO2、Ca(ClO)2,按质量比计算,MgO含量为55-80%、CuO1-10%、MnO21-10%、NaClO25-20%、Ca(ClO)25-20%。脱硝剂的浆液浓度15-35%,镁硫比为0.1-0.3。
烧结烟气中的SO2与NO2溶于脱硝剂浆液中,形成亚硫酸,亚硝酸,硝酸等酸液。脱硝剂中的金属氧化物在酸性环境中,反应活性逐渐加强,与ClO2 -、ClO-的一起作用下将NO氧化成NO2,NO2继续溶于水生成酸,然后促进反应进一步发生,金属氧化物反应后浓度降低,导致反应速度降低,然后将浆液作为旋转喷雾脱硫剂的消化液,解决了脱硫脱硝废液的二次处理工序。
喷淋系统利用较少的氧化镁及氧化物达到氧化氮氧化物的作用,然后利用钙基脱硫剂进行吸收,起到降低成本的作用。
喷淋塔产生的废液用来消化脱硫剂,从而使最终的脱硫副产物为干粉状态,易于装卸,整个脱硫脱硝过程中不产生废水,减少了脱硫副产物的二次处理工序。
本发明可以应用到烧结烟气SDA脱硫工艺中,对SDA脱硫工艺进行改进,使SDA脱硫工艺同时具有脱硝的作用,减少了企业新建脱硝项目的成本。本发明的脱硫脱硝工艺可以对烧结烟气同时脱硫脱硝,不产生废液,运行成本低。
说明书附图
图1是烧结烟气脱硫脱硝系统的工艺流程示意图;
其中,1电除尘器,2喷淋塔,3喷淋喷头,4搅拌桨,5脱硝剂罐,6泵,7PH值监测设备,8阀门,9脱硫剂罐,10石灰消化罐,11旋转喷雾塔,12布袋除尘器,13出口烟气监测设备。
具体实施方式
下面结合具体实施例进行说明:
烧结烟气脱硫脱硝系统,包括1电除尘器,2喷淋塔,3喷淋喷头,4搅拌桨,5脱硝剂罐,6泵,7PH值监测设备,8自动阀门,9脱硫剂罐,10石灰消化罐,11旋转喷雾塔,12布袋除尘器,13出口烟气监测设备。
烧结烟气通过电除尘器1进入喷淋塔2,从喷淋塔2出来后经过旋转喷雾塔11与布袋除尘器12后排放。喷淋喷头3在喷淋塔2内部。喷淋喷头3上部连有脱硝剂罐5,浆液从喷淋塔2下部流出,喷淋塔2下部有搅拌桨4,可以将浆液搅拌均匀。喷淋塔2下部的管路连接喷淋喷头3与石灰消化罐10,通过PH值监测设备7与阀门8联合控制,将浆液返回喷淋喷头3处继续与烟气反应或者将浆液放入石灰消化罐10内。石灰消化罐10上部连接脱硫剂罐9,下部连接旋转喷雾塔11。喷淋塔2流出的浆液与水一起将脱硫剂消化,然后进入旋转喷雾塔11进行脱硫。布袋除尘器12后管道设有出口烟气监测设备13。
本发明技术方案之二烧结烟气脱硫脱硝的方法,烧结烟气通过电除尘器1进入喷淋塔2,从喷淋塔2出来后经过旋转喷雾塔11与布袋除尘器12后排放。喷淋喷头3上部连有脱硝剂罐5,浆液从喷淋塔2下部流出,喷淋塔2下部有搅拌桨4,可以将浆液搅拌均匀。喷淋塔2下部的管路连接喷淋喷头3与石灰消化罐10,通过PH值监测设备7与阀门8联合控制,将浆液返回喷淋喷头3处继续与烟气反应或者将浆液放入石灰消化罐10内。经过PH值监测设备7,如果PH值大于4.5,用泵6将浆液返回喷淋塔2由喷淋喷头3喷出;如果PH值小于4.5,则打开自动阀门8,将浆液放入石灰消化罐10内。石灰消化罐10上部连接脱硫剂罐9,下部连接旋转喷雾塔11。喷淋塔2流出的浆液与水一起将脱硫剂消化,然后进入旋转喷雾塔11进行脱硫。布袋除尘器12后管道设有出口烟气监测设备13。
脱硝剂的成分为MgO、CuO、MnO2、NaClO2、Ca(ClO)2,按质量比计算,MgO含量为55-80%、CuO1-10%、MnO21-10%、NaClO25-20%、Ca(ClO)25-20%。脱硝剂的浆液浓度15-35%,镁硫比为0.1-0.3。
Claims (1)
1.一种低温同时脱硫脱硝的旋转喷雾系统的脱硫脱硝方法,其特征在于:烧结烟气通过电除尘器进入喷淋塔,脱硝剂罐内的脱硝剂通过喷淋喷头与烧结烟气在喷淋塔内反应,烧结烟气中的SO2与NO2溶于脱硝剂浆液中;反应后的浆液经过搅拌后通过下部管路流入石灰消化罐内,与脱硫剂罐流出的脱硫剂混合后一起作为脱硫剂进入旋转喷雾塔内;氧化后的烧结烟气通过上部管路进入旋转喷雾塔内与脱硫剂反应,经过旋转喷雾塔与布袋除尘器后排放;通过PH值监测设备与阀门联合控制,将浆液返回喷淋喷头处继续与烟气反应或者将浆液放入石灰消化罐内,如果PH值大于4.5,用泵将浆液返回喷淋塔由喷淋喷头喷出;如果PH值小于4.5,则打开阀门,将浆液放入石灰消化罐内;所述旋转喷雾系统包括电除尘器,喷淋塔,喷淋喷头,搅拌桨,脱硝剂罐,泵,PH值监测设备,阀门,脱硫剂罐,石灰消化罐,旋转喷雾塔,布袋除尘器,出口烟气监测设备;电除尘器通过管路连接喷淋塔,喷淋塔内部设有喷淋喷头,喷淋塔顶部通过管路连接旋转喷雾塔,旋转喷雾塔通过管路连接布袋除尘器和出口烟气监测设备,喷淋塔底部通过管路连接石灰消化罐,石灰消化罐上部通过管路连接脱硫剂罐,下部通过管路连接旋转喷雾塔;喷淋塔与石灰消化罐之间的管路设有PH值监测设备和阀门;脱硝剂罐底部通过管路连接喷淋塔中的喷淋喷头,脱硝剂罐与喷淋塔间的管路、喷淋塔与石灰消化罐间的管路,两者之间相通并设有泵;所述脱硝剂的成分为按质量比计算,MgO含量为55-80%、CuO1-10%、MnO21-10%、NaClO25-20%、Ca(ClO)25-20%;脱硝剂的浆液浓度15-35%,镁硫比为0.1-0.3。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610728569.9A CN107774074B (zh) | 2016-08-26 | 2016-08-26 | 一种低温同时脱硫脱硝的旋转喷雾系统及方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610728569.9A CN107774074B (zh) | 2016-08-26 | 2016-08-26 | 一种低温同时脱硫脱硝的旋转喷雾系统及方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107774074A CN107774074A (zh) | 2018-03-09 |
CN107774074B true CN107774074B (zh) | 2020-09-01 |
Family
ID=61438984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610728569.9A Active CN107774074B (zh) | 2016-08-26 | 2016-08-26 | 一种低温同时脱硫脱硝的旋转喷雾系统及方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107774074B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108816017A (zh) * | 2018-07-11 | 2018-11-16 | 绵阳惠泽天下环保科技有限公司 | 应用于酸解玻璃窑烟气工艺的抽气设备 |
CN111282425B (zh) * | 2020-04-01 | 2022-04-29 | 扬州绿泉环保工程技术有限公司 | 一种工业废气一体式机械环保处理设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102824844A (zh) * | 2012-09-11 | 2012-12-19 | 北京世能中晶能源科技有限公司 | 一种脱硫脱硝剂、制备方法及其用途 |
CN102908889A (zh) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | 一种烧结烟气脱硫脱硝系统及其脱硫脱硝的方法 |
CN103458995A (zh) * | 2011-05-31 | 2013-12-18 | 三菱重工业株式会社 | 来自脱硫排水的脱水滤液的喷雾干燥装置及废气处理系统 |
CN205340521U (zh) * | 2015-12-16 | 2016-06-29 | 鞍钢股份有限公司 | 一种旋转喷雾脱硫脱硝系统 |
-
2016
- 2016-08-26 CN CN201610728569.9A patent/CN107774074B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103458995A (zh) * | 2011-05-31 | 2013-12-18 | 三菱重工业株式会社 | 来自脱硫排水的脱水滤液的喷雾干燥装置及废气处理系统 |
CN102824844A (zh) * | 2012-09-11 | 2012-12-19 | 北京世能中晶能源科技有限公司 | 一种脱硫脱硝剂、制备方法及其用途 |
CN102908889A (zh) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | 一种烧结烟气脱硫脱硝系统及其脱硫脱硝的方法 |
CN205340521U (zh) * | 2015-12-16 | 2016-06-29 | 鞍钢股份有限公司 | 一种旋转喷雾脱硫脱硝系统 |
Also Published As
Publication number | Publication date |
---|---|
CN107774074A (zh) | 2018-03-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103480272A (zh) | 一种玻璃窑炉烟气除尘脱硝脱硫工艺及装置 | |
CN110860196A (zh) | 一种水泥烟气的脱硫脱硝系统 | |
CN110787606B (zh) | 烧结烟气循环流化床脱硫中脱硝脱汞一体化装置及方法 | |
CN203494378U (zh) | 水泥回转窑NOx控制的SCR脱硝装置 | |
CN102188897A (zh) | 湿法烟气联合脱硫脱氮方法 | |
CN104324575A (zh) | 一种喷雾吸收式烧结烟气同时脱硫脱硝的系统 | |
CN103933841A (zh) | 一种烧结烟气同时脱硫脱硝装置及方法 | |
CN104190223A (zh) | 一种液相氧化烟气脱硫脱硝吸收工艺及装置 | |
CN112090253A (zh) | 烟气分步催化氧化结合湿法吸收同时脱硫脱硝方法及装置 | |
CN103566728A (zh) | 用于烟气脱硫脱氮的设备 | |
CN202876647U (zh) | 一种燃煤锅炉及炉窑烟气的湿法脱硫脱硝装置 | |
CN104056538B (zh) | 一种集成脱硫脱硝的烟气净化系统与烟气净化方法 | |
CN107774074B (zh) | 一种低温同时脱硫脱硝的旋转喷雾系统及方法 | |
CN210631915U (zh) | 一种水泥窑脱硫系统 | |
CN102309920B (zh) | 一种脱除FCC烟气中NOx和SOx的方法 | |
CN205340521U (zh) | 一种旋转喷雾脱硫脱硝系统 | |
CN207342475U (zh) | 一种钢铁烧结机烟气脱硫脱硝设备 | |
CN107308783B (zh) | 一种烟气湿法同时脱硫脱硝工艺 | |
CN212492330U (zh) | 一种基于前置氧化的活性焦联合脱硫脱硝系统 | |
CN103055889A (zh) | 一种低温脱硝MnOx-CuO-TiO2催化剂及其制备方法和应用 | |
CN203090728U (zh) | 一种烟气同时脱硫脱硝装置及氨雾吸收塔 | |
CN107420927A (zh) | 一种燃煤锅炉烟气高效净化及余热利用工艺 | |
CN205032080U (zh) | 一种干式烟气脱硫脱硝除尘一体化净化系统 | |
CN205948624U (zh) | 工业烟气干式低温协同除尘脱硫脱硝除汞一体化装置 | |
CN205032040U (zh) | 一种干式烟气的一体化净化系统 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |