EP2890477A1 - Method and device for purifying waste gases containing acidifying substances - Google Patents
Method and device for purifying waste gases containing acidifying substancesInfo
- Publication number
- EP2890477A1 EP2890477A1 EP13834084.9A EP13834084A EP2890477A1 EP 2890477 A1 EP2890477 A1 EP 2890477A1 EP 13834084 A EP13834084 A EP 13834084A EP 2890477 A1 EP2890477 A1 EP 2890477A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- exhaust gases
- container
- ash
- mixture
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000126 substance Substances 0.000 title description 10
- 239000002912 waste gas Substances 0.000 title description 2
- 150000001875 compounds Chemical class 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 17
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 27
- 239000002956 ash Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 238000011282 treatment Methods 0.000 claims description 2
- 229910052925 anhydrite Inorganic materials 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000006386 neutralization reaction Methods 0.000 claims 1
- 230000032258 transport Effects 0.000 description 8
- 230000004913 activation Effects 0.000 description 6
- 238000000746 purification Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000005243 fluidization Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 241000169624 Casearia sylvestris Species 0.000 description 1
- 102000011045 Chloride Channels Human genes 0.000 description 1
- 108010062745 Chloride Channels Proteins 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- -1 Mg(0H)2 and CaC03 Chemical class 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
-
- 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
- B01D53/68—Halogens or halogen compounds
- B01D53/685—Halogens or halogen compounds by treating the gases with solids
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/10—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles or endless belts
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
- C04B2/08—Devices therefor
-
- 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
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2047—Hydrofluoric acid
-
- 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
- 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
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
- B01D2258/0291—Flue gases from waste incineration plants
Definitions
- the present invention relates to the purification of exhaust gases comprising acidifying compounds such as SO2 and HC1.
- Exhaust gases comprising such acidifying compounds often arise in connection to industrial combustion of organic compounds, such as in fossil fuel fired power plants and waste incineration plants. They also arise in for instance chemical process industry where for instance SO2 or HC1 constitute residual products.
- alkaline compounds such as Mg(OH) 2 , lime in the form of for instance CaO, Ca(0H) 2 or CaCC>3, etc.
- a scrubber or the similar separate the acidifying compounds.
- alkaline fly ash for this purpose.
- the alkaline compounds are also recirculated, so that the exposure between exhaust gases and alkaline compounds is increased.
- the present invention solves the above described problems.
- the invention relates to a method for purifying exhaust gases from acidifying compounds, which exhaust gases are exposed to an alkaline compound such as Ca(OH) 2 which is reacted with and therefore neutralizes the acidifying compounds, and is characterized in that ash comprising CaO in a first step is mixed, in a container, with water, but not with the exhaust gases, and is heated so that CaO is transformed into Ca(0H) 2 , and in that the hence formed Ca(OH) 2 in a second step is reacted with, and therefore neutralizes, the acidifying compounds in the exhaust gases.
- the invention also relates to a device.
- Figure 1 is an outline diagram of a device for purifying exhaust gases according to the present invention
- Figure 2 is a side view of an activation device according to a first preferred embodiment of the invention.
- Figure 3 is a side view of an activation device according to a second preferred embodiment of the invention.
- Figure 4 is a side view of an activation device according to a third preferred embodiment of the invention.
- Figure 1 is an outline diagram illustrating a device for purifying exhaust gases comprising acidifying compounds, preferably gaseous, such as S0 2 , S0 3 , HF och HC1.
- An industrial process 1 such as a combustion process or another chemical process, hence emits gases, such as flue gases, compris- ing said acidifying compounds.
- gases are denoted "exhaust gases”.
- the exhaust gases are brought, using a pipe work 2, to a dust separation step 3, in which solid substances such as fly ash or other solid alkaline compounds dispersed in the exhaust gases are separated from the exhaust gases.
- the separated alkaline substances are brought onwards to an activation device 4, in which at least a share of the CaO contained in the alkaline substances is transformed to Ca(0H) 2 according to CaO + H 2 0 ⁇ Ca (OH) 2 -
- the activated alkaline substances, then comprising Ca(OH)2, are hence exposed to the exhaust gases, and thereby neutrality izes their acidifying contents.
- a neutralizing reaction whereby SO2 is neutralized so that CaS0 3 is formed, is:
- alkaline compounds such as Mg(0H) 2 and CaC0 3
- SO2 and HC1 can also be used to neutralize various acidifying compounds in the exhaust gases, such as SO2 and HC1, in corresponding ways which are known as such.
- HC1 is neutralized 20 with Ca(OH) 2
- CaCl 2 will be formed.
- the exhaust purification device can of course comprise also other units that are conventional as such, such as dry and/or moist purification steps, such as a scrubber.
- What is essen- 25 tial for the present invention is that the alkaline substances are activated in the activation device 4, in a way which is described in closer detail below, before they are dispersed in the exhaust gases.
- the alkaline substances at least partly, preferably completely, are constituted by alkaline fly ash which has been separated from the exhaust gases.
- additional alkaline compounds may for instance comprise fly ash from other processes and various forms of lime.
- FIG. 2 illustrates, in cross-section and from the opposite side, an activation device 100 for activating alkaline compounds according to a first preferred embodiment.
- the device 100 comprises an elongated container 101, in which alkaline compounds that are to be activated are fed in through an inlet 102 in a first end of the container 101, and out through an outlet 103 in the opposite end of the container 101.
- an elongated mixing space 104 In the interior of the container 101, there is an elongated mixing space 104, through which a feeding means 105 is arranged to feed the alkaline compounds in the main direction 106 of extension of the container 101.
- Water in the form of steam or hot, liquid water, is supplied via a conduit system 107, a valve 108 and at least one nozzle 109.
- the steam holds a temperature of at least 110°C, if it is liquid at least 30°C.
- the majority of the nozzles 109 are arranged to distribute the supplied water evenly over the alkaline compounds comprised in the container 101, from above and along at least a majority of the length of the container 101.
- the alkaline compounds comprise ash comprising CaO, and are preferably completely comprised by ash, preferably from the industrial process that has also given rise to the exhaust gases as such.
- the ash is mixed with water in the container 101 without therein coming into contact with the exhaust gases. More- over, heat is supplied to the contents of the container 101, which in combination with mechanical mixing as well as the exposure to the supplied water, results in rapid transformation of CaO into Ca(OH) 2 , but also in that the ash parti- cles crack open and become more porous.
- the present method is also efficient for transforming other oxides to hydroxides, such as transformation of MgO to Mg (OH) 2 .
- the heat supply to the container takes places only through the heat in the supplied water.
- a separate heating device 114 it is also possible to use a separate heating device 114. Irrespective of which, it is preferred that the container 101 is isolated in a suitable manner to avoid thermal losses.
- the amount of added water is continuously regulated, using a control device 110, so that the resulting mixture of water and alkaline compounds is so moist so that the above described transformation to hydroxide can take place for the majority of the CaO comprised in the ash, but at the same time sufficiently dry in order to both be transported through the container 101 and thereafter to be able to be injected into the exhaust stream and therein be able to react with the acidifying compounds. It is preferred that the resulting mixture, at the outlet 103, holds a moisture ratio of 2-5%.
- compressed air 111 is furthermore added, via an inlet 112, at the bottom of the container 101.
- sufficient amounts of compressed air per time unit are added for the mixture of alkaline compounds and water to form a fluidized bed in the container 101.
- a fluidiza- tion cloth 113 which is conventional as such, so that a bottom of the container 101 is constituted by a fluidizing part with an outer mantle and an inner fluidization cloth 113.
- the alkaline compounds that have been activated using water and heat in the container 101 are returned, after they have reacted with the exhaust gases, once more to the container 101 for additional treat- ment with water and heat, after which the reactivated alkaline compounds again are reacted with the exhaust gases.
- This circulation can then be repeated in order to maximally exploit the alkali which is present in the ash.
- the ash which has been treated in the container with water and heat is used for supplementing an externally supplied alkaline compound for purifying the exhaust gases from the acidifying compounds. Since ash most often is relatively cheap, such a supplementation will be profitable.
- the device 100 illustrated in figure 2 is provided with a substantially horizontally extending container 101, through and along which the mixture of alkaline compounds and water is transported using the feeding means 105, and to which water is supplied through the nozzles 109, that are arranged above the surface of the mixture in the contain- er 101.
- Figure 3 illustrates an alternative embodiment, in which a device 200, in a way corresponding to that of figure 2, comprises a container 201 with an inlet 202 and an outlet 203, between which the mixture of alkaline compounds and water is transported using a feeding means 205 in the form of a feeding screw.
- the container 201 is not horizontally arranged, but the mixture is transported substantially vertically, in the direction 206, first by the use of the feeding means 205 on to a first shaft 204a, thereafter down to the bottom of the shaft 204a and across to a second shaft 204b, located on the other side of a vertical partition wall 204c, and further up towards the outlet 203.
- the bottom of the container 201 preferably slants in a direction towards the outlet 203, in order to facilitate the transport of the mixture. Also, it is preferred that the transport of the mixture is also facilitated by the supply of compressed air 211, via an inlet 212, at the bottom of the container 201, so that a fluidized bed, preferably with a fluidization cloth 213, is formed as described above. Hence, the compressed air will bring with it the mixture up through the shaft 204b and towards the outlet 203.
- the water supply which is similar to the one described above, takes place via a control device 110, a conduit system 207, a valve 208 and nozzles 209, where the nozzles 209 are arranged in the ceiling of the second shaft 204b, so that the water is distributed into the mixture from above in the second shaft 204b right before the outlet 203.
- the heat is supplied via the water and/or using a separate heating device 214.
- the transport of the mixture in this embodiment takes place firstly, in the first shaft 204a, using energy supplied via the feeding means 205 and gravity, and thereafter, in the second shaft 204b, primarily using energy supplied via the compressed air 211.
- Figure 4 illustrates an additionally alternative embodiment, in which a device 300 comprises a container 301 which, similarly to the container 201 and using a vertical partition wall 304c, is partitioned in a first shaft 304a and a second shaft 304b, whereby the mixture is transported, from an inlet 302 to an outlet 303 and in the direction 306, using a vertically arranged feeding means 305 in the second shaft 304b, in combination with compressed air 311 which is supplied via an inlet 312 below a fluidization cloth 313 at the bottom of the container 301.
- the transport in the container 301 thus takes place mainly using the feeding means 305, supplemented by the compressed air 311.
- Water is supplied, using a control device 310, a valve 308 and a conduit system 307, via nozzles 309 arranged in the vicinity of the bottom of the container 301 and directed upwards in the second shaft 304b.
- the compressed air 311 will improve the mixing of the alkaline compounds and the supplied water in the second shaft 304b.
- Heat is supplied via the water and/or using a separate heating device 314.
- the respective second shaft 204b, 304b in devices 200 and 300 needs not be vertical, but may slant up- wards to the outlet 203, 303.
- This facilitates additionally transport of the mixture and can advantageously be used in certain embodiments in which sufficient mixture can be achieved also without the vertical transport illustrated in figures 3 and 4.
- the feeding means 205, 305 may constitute a screw pump of the Archimedean type, which efficiently transports the mixture up towards the outlet 203, 303 under constant mixing.
- the hot water or steam needs not be supplied via nozzles 109, 209, 309. Instead, water can for example be added to the ash already before it enters into the container 101, 201, 301.
- the invention is not to be limited to the describe embodiments, but may be varied within the scope of the en closed claims.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Treating Waste Gases (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1250974A SE538327C2 (en) | 2012-08-31 | 2012-08-31 | Procedure for cleaning exhaust gases |
PCT/SE2013/051023 WO2014035331A1 (en) | 2012-08-31 | 2013-08-30 | Method and device for purifying waste gases containing acidifying substances |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2890477A1 true EP2890477A1 (en) | 2015-07-08 |
EP2890477A4 EP2890477A4 (en) | 2016-05-11 |
Family
ID=50183993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13834084.9A Withdrawn EP2890477A4 (en) | 2012-08-31 | 2013-08-30 | Method and device for purifying waste gases containing acidifying substances |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2890477A4 (en) |
EA (1) | EA026160B9 (en) |
SE (1) | SE538327C2 (en) |
WO (1) | WO2014035331A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105381702B (en) * | 2015-09-28 | 2019-02-15 | 程洪亮 | Smoke evacuation dedusting environment friendly comprehensive tower |
CN111185074A (en) * | 2020-01-13 | 2020-05-22 | 高邮康博环境资源有限公司 | Environment-friendly desulfurization tower flue gas treatment and purification equipment for treating solid waste materials |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IN188644B (en) * | 1995-08-21 | 2002-10-26 | Abb Research Ltd | |
US5795548A (en) * | 1996-03-08 | 1998-08-18 | Mcdermott Technology, Inc. | Flue gas desulfurization method and apparatus |
SE508868C2 (en) * | 1997-03-17 | 1998-11-09 | Flaekt Ab | Device for mixing particulate matter and liquid |
SE523667C2 (en) * | 2002-09-20 | 2004-05-11 | Alstom Switzerland Ltd | Method and apparatus for separating gaseous pollutants from hot gases by particulate absorbent material and mixer for wetting the absorbent material |
FR2911518B1 (en) * | 2007-01-24 | 2009-03-27 | Lab Sa Sa | METHOD AND INSTALLATION OF CONDITIONING SOLIDS FOR RETURN TO A GAS-SOLID SEPARATOR, AND CORRESPONDING FUME CLEANING METHOD |
US20110150755A1 (en) * | 2009-12-21 | 2011-06-23 | Flsmidth A/S | Method and Apparatus for Hydrating Lime |
FR2961412B1 (en) * | 2010-06-18 | 2013-03-22 | Lab Sa | METHOD AND INSTALLATION FOR PURIFYING COMBUSTION SMOKE |
-
2012
- 2012-08-31 SE SE1250974A patent/SE538327C2/en not_active IP Right Cessation
-
2013
- 2013-08-30 WO PCT/SE2013/051023 patent/WO2014035331A1/en active Application Filing
- 2013-08-30 EA EA201590430A patent/EA026160B9/en not_active IP Right Cessation
- 2013-08-30 EP EP13834084.9A patent/EP2890477A4/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2014035331A1 (en) | 2014-03-06 |
EA201590430A1 (en) | 2015-08-31 |
EA026160B1 (en) | 2017-03-31 |
SE538327C2 (en) | 2016-05-17 |
SE1250974A1 (en) | 2014-03-01 |
EP2890477A4 (en) | 2016-05-11 |
EA026160B9 (en) | 2017-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106659971B (en) | Method and apparatus for removing pollutants from exhaust gas | |
US4309393A (en) | Fluidized bed sulfur dioxide removal | |
EP2295128B1 (en) | Mixer for moistening a particulate dust | |
US9440188B2 (en) | Method for removing contaminants from exhaust gases | |
JP6852958B2 (en) | Devices and methods for evaporating wastewater and reducing acidic gas emissions | |
US7819959B2 (en) | Gas quench and scrubber draw-off system | |
CN102698590B (en) | Dry process and wet process combined smoke gas desulfuration system | |
CA2476149A1 (en) | Hydrated lime kiln dust recirculation method for gas scrubbing | |
US6939523B2 (en) | Method of removing SO3 from flue gases | |
ES2349655T3 (en) | PROCESS AND INSTALLATION OF SMOKE CLEANING CONTAINING ACID POLLUTANTS. | |
US4663136A (en) | Emission control process for combustion flue gases | |
RU2698835C2 (en) | Method and device for partial removal of contaminants from process gas flow | |
US8906333B1 (en) | Dry scrubber system with air preheater protection | |
WO2014035331A1 (en) | Method and device for purifying waste gases containing acidifying substances | |
HUT51504A (en) | Method for removing sulfur dioxide from hot gas fumes | |
EP2571601B1 (en) | Method of capturing sulfur oxides from the flue gas of an oxyfuel combustion cfb boiler | |
FI76931B (en) | FOERFARANDE FOER RENING AV ROEKGASER. | |
US6594553B1 (en) | Process for enhancing the sulfur capture capability of an alkaline earth material | |
CN1710332A (en) | Deep-desulfurizing method and apparatus for circulating fluidized bed | |
US9162180B1 (en) | Industrial waste heat recovery and concurrent pollution control through the unique application of an underground limestone mine | |
CN110237664A (en) | A kind of refuse incineration deacidifying flue gas processing system | |
CN217875860U (en) | Sludge drying and incinerating system based on bubbling fluidized bed | |
JPS649069B2 (en) | ||
FI111608B (en) | Flue gas cleaning process | |
CN104514042A (en) | Energy-saving environment-friendly device for production of activated carbon fiber |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20150330 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
RA4 | Supplementary search report drawn up and despatched (corrected) |
Effective date: 20160411 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B01D 53/50 20060101ALI20160405BHEP Ipc: B01J 19/20 20060101ALI20160405BHEP Ipc: B01J 8/18 20060101ALI20160405BHEP Ipc: B01D 53/68 20060101ALI20160405BHEP Ipc: B01D 53/83 20060101AFI20160405BHEP Ipc: B01J 8/10 20060101ALI20160405BHEP Ipc: B01D 53/96 20060101ALI20160405BHEP Ipc: C04B 2/06 20060101ALI20160405BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20180301 |