EP3319711A2 - Method for separating mercury from furnace gases - Google Patents
Method for separating mercury from furnace gasesInfo
- Publication number
- EP3319711A2 EP3319711A2 EP16766469.7A EP16766469A EP3319711A2 EP 3319711 A2 EP3319711 A2 EP 3319711A2 EP 16766469 A EP16766469 A EP 16766469A EP 3319711 A2 EP3319711 A2 EP 3319711A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mercury
- catalytically active
- powdery
- active material
- metering
- 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- Withdrawn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
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 30
- 239000003546 flue gas Substances 0.000 claims description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 16
- 238000007254 oxidation reaction Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 239000011149 active material Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 13
- 230000003647 oxidation Effects 0.000 claims description 10
- 150000004679 hydroxides Chemical class 0.000 claims description 7
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000003643 water by type Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910003439 heavy metal oxide Inorganic materials 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910000000 metal hydroxide Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- NWJUARNXABNMDW-UHFFFAOYSA-N tungsten vanadium Chemical compound [W]=[V] NWJUARNXABNMDW-UHFFFAOYSA-N 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000005067 remediation Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 18
- 230000003197 catalytic effect Effects 0.000 description 13
- 230000008021 deposition Effects 0.000 description 9
- 239000000428 dust Substances 0.000 description 9
- 238000006477 desulfuration reaction Methods 0.000 description 8
- 230000023556 desulfurization Effects 0.000 description 8
- 241000894007 species Species 0.000 description 8
- 239000012717 electrostatic precipitator Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000004820 halides Chemical class 0.000 description 3
- 239000003077 lignite Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002731 mercury compounds Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8665—Removing heavy metals or compounds thereof, e.g. mercury
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20723—Vanadium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/2073—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20746—Cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20753—Nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20761—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20776—Tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20784—Chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20792—Zinc
-
- 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
- B01D2257/30—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
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/60—Heavy metals; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/10—Catalytic reduction devices
Definitions
- the invention relates to a method for the separation of mercury (Hg) in exhaust gases from
- Incineration plants wherein the existing elemental mercury is oxidized and resulting oxidized mercury is deposited in the process during the treatment and filtration of the combustion exhaust gas.
- Hgel elemental Hg species
- Chloride additives require around ten times the dose for results comparable to bromide. Iodides are similarly effective to bromide but significantly more expensive.
- Activated carbons are used in the flue gas as a third technology, mainly used in plants in the USA (EP 2 260 940 A4). Adsorption or chemisorption mechanisms of mercury take place at the high specific surface of the carbon. For improved deposition of elemental mercury, these coals are often doped or impregnated with further additives (eg Cl, Br, I, S). The production of activated carbons for elemental Hg deposition is complex and energy-intensive.
- the fourth technology to be mentioned is the process patented by Babcock with tetrasulfide addition to the flue gas before the dust separation (EP 0 709 128 A2). The elemental mercury is chemically bound and separated as a solid product together with the filter dust. This requires large amounts of precipitant or a fabric filter.
- the object of the invention is to find a method for the separation of mercury in combustion exhaust gases from power plants, wherein the disadvantages of the prior art are eliminated and a simple method is realized to effect optimal oxidation of the existing mercury in combustion exhaust gases.
- Metering is metered into the combustion exhaust gas, wherein the metering takes place in the flue gas path to the firebox, but the increased formation of oxidized mercury is carried out in a temperature range ⁇ 500 ° C, that the material consists essentially of inorganic and non-combustible material,
- That the powdered, catalytically active material is preferably made of iron (III) oxide,
- That the metering device is carried out for the introduction of the material after the economizer, after the air preheater or after dedusting,
- the powdery, catalytically active material consists of heavy metal oxides and hydroxides, wherein oxides and hydroxides of iron, copper, manganese, zinc, vanadium tungsten, cobalt, chromium and nickel are applied.
- the dosing quantities are so small in comparison to the accumulating filter dust that its quality and subsequent use is not adversely affected.
- an addition to the dedusting system and a separation on facilities for flue gas desulfurization are also possible. Homogeneous distribution should be taken into account when adding the catalyst to the flue gas.
- the measure proposed here is based on a method according to the invention, which manages with little equipment and avoids large-scale plant retrofits.
- the catalytic material is in this case distributed from a silo by means of discharge and conveying air to different metering lances and directly, as homogeneously distributed, introduced into the exhaust stream.
- the elemental mercury is thereby converted into the oxidized form on contact with the iron (III) oxide.
- subsequent facilities for emission control such. As the dust or desulfurization, then the deposition of oxidized mercury takes place.
- the catalytically active material preferably iron (III) oxide
- the catalytically active material is deposited together with the filter dust on the dedusting plant or in the desulphurisation plant.
- the catalytically active material is not flammable or explosive, which means that the process is characterized by significantly lower safety risks.
- the mechanism of the improved Hg deposition is based on the shift of the poorly water-soluble elemental Hg species to the highly water-soluble and thus much better depositable, oxidized mercury species (Hgox).
- the process uses the halides present in the fuel or exhaust gas as reactants for elemental Hg. By adding the catalyst, this oxidation reaction proceeds more efficiently at lower temperatures.
- the material used has a high specific surface area (m 2 / g) and as a result is much more reactive than oxidatively active constituents occurring natively in filter dust.
- an exhaust gas purification device (dedusting or desulfurization) must be present.
- the catalytic function of the material is given both during the flight phase in the exhaust gas and during the dwell phase in the filter cake of dedusting.
- the overall degree of separation of Hg increases via downstream equipment for flue gas purification.
- Adsorptive deposition effects of mercury can also take place directly on the metered material.
- the method is used for oxidation and thus improves the separation of mercury in combustion exhaust gases from power plants with the addition of a powdery, catalytically active material having mean grain diameters ⁇ 35 pm, preferably iron (III) oxide.
- the powdery material is introduced by conventional dosing devices (eg screw conveyors, blowers) in the
- Combustion gas is metered and existing cleaning equipment, such as the electrostatic precipitator or the wet
- the catalytic effect is enhanced in the formation of a flow-through filter cake.
- the catalytic effect is shown in the temperature range of ⁇ 500 ° C, resulting in suitable dosing by economizer, air preheater or after dust filter.
- the catalytic effect is caused by base metals or their oxides.
- Applications are possible that use heavy metal oxides and hydroxides. These can be: oxides and / or hydroxides of iron, copper, manganese, zinc, vanadium tungsten, cobalt, chromium and nickel.
- the material used is essentially inorganic and nonflammable.
- the method further serves for the separation of acidic exhaust gas components, such.
- acidic exhaust gas components such as hydrochloric acid (HCl) and sulfur oxides (SO2, SO3), if metals are metered in the form of hydroxides.
- the dosed material acts as a catalyst and adsorbent for mercury and
- the supply of the material according to the invention takes place behind the boiler / combustion 1 and / or the air preheater 2 and / or the dedusting 3 as catalytic material.
- the catalytically active material is metered into the combustion exhaust gas via known metering devices, such as screw conveyors or blowers.
- Lignite combustion are basically the boiler / combustion 1, followed by an air preheater 2, a dedusting 3, a desulfurization 4 and a chimney / cooling tower 5 given.
- the material according to the invention is to be metered into a hard coal combustion, metering takes place in the ongoing process behind the boiler / combustion 1, the air preheater 2 and / or the catalytic denitrification 7 and / or the dedusting 3. After dedusting 3 desulfurization 4 takes place towards the chimney / cooling tower. 5
- the material according to the invention is metered in via the boiler / combustion 1, the air preheater 2, the dedusting 3. After the dedusting 3, the desulfurization 4, the catalytic denitrification 7, takes place towards the chimney / Cooling tower 5.
- customary dosing devices such as screw conveyors or blowers are used.
- the material preferably iron (III) oxide
- the feed of the catalyst was carried out via a pneumatic conveyor line from the silo via a lance system with 12 metering points distributed over the cross section of the exhaust passage.
- the deposition of the catalyst was carried out together with the filter dust on electrostatic precipitator.
- the average grain diameter of the iron-containing catalyst was 1.5 pm. Concentrations in the raw gas between 35-150 mg / Nm 3 f. set and achieved in Table 1, Figure 2, oxidation results.
- the oxidized Hg content was ⁇ 4 pg / Nm 3 tr in the usual range of total mercury inventory of 15 pg / Nm 3 tr. After electrostatic precipitator, this results in a proportion of about 25% oxidized Hg. Already with dosing quantities around 35 mg / Nm 3 f. this share increased to almost 50%. With maximum cat concentration of 150 mg / Nm 3 f. a proportion of oxidized mercury of 57% was reached.
- the material preferably iron (III) oxide, was added to the flue gas in the lignite fired power plant after air preheater / before electrostatic precipitator at temperatures around 170 ° C.
- the feed of the catalyst was carried out via a pneumatic conveyor line from the silo via a lance system with 12 metering points distributed over the cross section of the exhaust passage.
- the deposition of the catalyst was carried out together with the filter dust on the subsequent in the process electrostatic precipitator.
- the average grain diameter of the iron-containing catalyst was 1.5 pm. There were concentrations in the crude gas of 50 and 210 mg / Nm 3 f. tested and shown in Table 2, Figure 3, shown
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015009343 | 2015-07-23 | ||
PCT/DE2016/100333 WO2017012613A2 (en) | 2015-07-23 | 2016-07-25 | Method for separating mercury from furnace gases |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3319711A2 true EP3319711A2 (en) | 2018-05-16 |
Family
ID=56939826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16766469.7A Withdrawn EP3319711A2 (en) | 2015-07-23 | 2016-07-25 | Method for separating mercury from furnace gases |
Country Status (5)
Country | Link |
---|---|
US (1) | US20180200672A1 (en) |
EP (1) | EP3319711A2 (en) |
DE (2) | DE112016003318A5 (en) |
WO (1) | WO2017012613A2 (en) |
ZA (1) | ZA201800808B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108479389B (en) * | 2018-04-27 | 2021-03-26 | 华中科技大学 | Flue gas synergistic denitration and demercuration system and method |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4403244A1 (en) * | 1994-02-03 | 1995-08-10 | Metallgesellschaft Ag | Processes for cleaning combustion exhaust gases |
DE4437781A1 (en) | 1994-10-25 | 1996-05-02 | Steinmueller Gmbh L & C | Process for removing mercury from an exhaust gas containing mercury |
US6719828B1 (en) * | 2001-04-30 | 2004-04-13 | John S. Lovell | High capacity regenerable sorbent for removal of mercury from flue gas |
DE10233173B4 (en) | 2002-07-22 | 2006-03-23 | Bayer Industry Services Gmbh & Co. Ohg | Method for separating mercury from flue gases |
JP2004075441A (en) * | 2002-08-14 | 2004-03-11 | Huzhou Daikyo Hari Seihin Yugenkoshi | Lithium oxide-alumina-silica-based crystalline glass and crystallized glass, and method of manufacturing the crystalline glass and the crystallized glass |
US20060076229A1 (en) * | 2003-01-13 | 2006-04-13 | Mazyck David W | Magnetic activated carbon and the removal of contaminants from a fluid streams |
US20070092419A1 (en) * | 2005-10-26 | 2007-04-26 | Iowa State University Research Foundation, Inc. | Method for removal of mercury in gas streams |
JP4277226B2 (en) | 2006-02-09 | 2009-06-10 | バブコック日立株式会社 | Catalyst for oxidizing metal mercury, catalyst for purifying exhaust gas provided with catalyst for oxidizing metal mercury, and method for producing the same |
US8057576B1 (en) * | 2008-06-10 | 2011-11-15 | Calgon Carbon Corporation | Enhanced adsorbents and methods for mercury removal |
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-
2016
- 2016-07-25 DE DE112016003318.4T patent/DE112016003318A5/en not_active Withdrawn
- 2016-07-25 US US15/746,445 patent/US20180200672A1/en not_active Abandoned
- 2016-07-25 WO PCT/DE2016/100333 patent/WO2017012613A2/en active Application Filing
- 2016-07-25 DE DE102016113650.6A patent/DE102016113650A1/en not_active Withdrawn
- 2016-07-25 EP EP16766469.7A patent/EP3319711A2/en not_active Withdrawn
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2018
- 2018-02-07 ZA ZA2018/00808A patent/ZA201800808B/en unknown
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DE102016113650A1 (en) | 2017-01-26 |
WO2017012613A3 (en) | 2017-03-16 |
DE112016003318A5 (en) | 2018-04-19 |
WO2017012613A2 (en) | 2017-01-26 |
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