EP1454095A1 - Verfahren zum abscheiden von asche bei verbrennungsanlagen - Google Patents
Verfahren zum abscheiden von asche bei verbrennungsanlagenInfo
- Publication number
- EP1454095A1 EP1454095A1 EP02792820A EP02792820A EP1454095A1 EP 1454095 A1 EP1454095 A1 EP 1454095A1 EP 02792820 A EP02792820 A EP 02792820A EP 02792820 A EP02792820 A EP 02792820A EP 1454095 A1 EP1454095 A1 EP 1454095A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrophobic
- silica
- separating
- aerosil
- combustion installations
- 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- Withdrawn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 12
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 5
- 239000002956 ash Substances 0.000 title abstract description 9
- 235000002918 Fraxinus excelsior Nutrition 0.000 title abstract description 3
- 238000009434 installation Methods 0.000 title abstract 2
- 239000007789 gas Substances 0.000 claims abstract description 10
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 229910021485 fumed silica Inorganic materials 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 229910002012 Aerosil® Inorganic materials 0.000 description 7
- 239000012717 electrostatic precipitator Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000000725 suspension Substances 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- 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
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
Definitions
- the invention relates to a method for separating ash in incineration plants.
- Incineration plants such as coal-fired power plants and in particular waste incineration plants, are required to separate the ashes arising from the combustion from the exhaust gases and to send them to a hazardous waste landfill or other approved uses.
- the fine pocket which cannot be separated on the upstream surfaces, is included
- High voltage ionizes.
- the charged particles then migrate to the oppositely charged separation plate and are pushed into a funnel by a scraper.
- the conveyance to a bunker is located under this funnel, from which the residues are transported to a landfill, for example by truck.
- the known method has the disadvantage that the very fine dust builds up in the filter and clogs the funnel without the dust trickling down into the conveyor.
- the object of the invention was therefore to develop a method for separating ash in incineration plants which does not have this disadvantage.
- the invention relates to a method for cleaning exhaust gases from combustion plants by means of
- Separation devices which is characterized in that a hydrophobized, pyrogenically prepared silica is introduced into the exhaust gas stream, this silica being swirled with the ash particles.
- the hydrophobic, pyrogenically produced silica can be added upstream of the separation device, such as the electrostatic filter.
- the hydrophobicized, pyrogenically prepared silica which can be used is silica which has been surface-modified or hydrophobicized with the following substances: dimethyldichlorosilane
- Silica can be done, for example, by blowing.
- hydrophobic, pyrogenic silica is known from Ulimann's Encyclopedia of Industrial Chemistry, 4th edition, volume 21, pages 466 to 467.
- the hydrophobic, pyrogenically produced silica can be added in an amount of 0.1 to 0.2 kg per ton of domestic waste incinerated.
- hydrophobic Aerosil® The commercially available silicic acid types listed in Table 1 can be used as the hydrophobic, pyrogenically prepared silicic acid.
- the hydrophobic, pyrogenically produced silica Aerosil 972 can be used.
- the aerosil R 972 silica has the following physico-chemical characteristics:
- the method according to the invention has the advantage that the fine pocket no longer builds up in the funnel and therefore no longer clogs the funnel.
- Figure 1 Possible dosing points for dosing Aerosil R 972 in the area of the spray dryer 2 (3) and the electrostatic filter 3 (4)
- Figure 2 a possible dosing point for dosing Aerosil R972 in the gas inlet area of the electrostatic precipitator after the end of the boiler and before the electrostatic precipitator
- Figure 3 a possible dosing point for dosing Aerosil R972 after the end of the kettle and before the tissue filter
- the ' Aerosil R 972 is added at various points in the (flue gas removal) (REA) area.
- the Aerosil R 972 can be added to the product suspension in the mixing device 14. It can be supplied via the compressed air from the spray dryer. It can be fed to the discharge of the spray dryer.
- the metering takes place in the boiler area in the gas inlet upstream of the electric filter or the fabric filter.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Silicon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10161260 | 2001-12-13 | ||
DE10161260 | 2001-12-13 | ||
DE10235170A DE10235170A1 (de) | 2001-12-13 | 2002-08-01 | Verfahren zum Abscheiden von Asche bei Verbrennungsanlagen |
DE10235170 | 2002-08-01 | ||
PCT/EP2002/013413 WO2003054448A1 (de) | 2001-12-13 | 2002-11-28 | Verfahren zum abscheiden von asche bei verbrennungsanlagen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1454095A1 true EP1454095A1 (de) | 2004-09-08 |
Family
ID=26010771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02792820A Withdrawn EP1454095A1 (de) | 2001-12-13 | 2002-11-28 | Verfahren zum abscheiden von asche bei verbrennungsanlagen |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050129961A1 (de) |
EP (1) | EP1454095A1 (de) |
JP (1) | JP2005512797A (de) |
CN (1) | CN1602401A (de) |
AU (1) | AU2002358555A1 (de) |
WO (1) | WO2003054448A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040131970A1 (en) * | 2003-01-07 | 2004-07-08 | Meagley Robert P. | Photodefinable polymers for semiconductor applications |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1642998B2 (de) * | 1967-03-23 | 1973-05-17 | Verfahren zur verhinderung der agglomeration feinteiliger, 1ulverfoermiger stoffe | |
US4319890A (en) * | 1978-04-05 | 1982-03-16 | Teller Environmental Systems, Inc. | Dry impact capture of aerosol particulates |
US4294588A (en) * | 1980-04-14 | 1981-10-13 | Betz Laboratories, Inc. | Electrostatic precipitator efficiency enhancement |
US6352653B1 (en) * | 1998-11-26 | 2002-03-05 | Asahi Glass Company Ltd. | Acid component-removing agent, method for producing it and method for removing acid components |
DE19961933A1 (de) * | 1999-12-22 | 2001-07-26 | Degussa | Hydrophobe Kieselsäure |
-
2002
- 2002-11-28 EP EP02792820A patent/EP1454095A1/de not_active Withdrawn
- 2002-11-28 JP JP2003555123A patent/JP2005512797A/ja not_active Withdrawn
- 2002-11-28 WO PCT/EP2002/013413 patent/WO2003054448A1/de active Application Filing
- 2002-11-28 US US10/498,554 patent/US20050129961A1/en not_active Abandoned
- 2002-11-28 CN CN02824838.4A patent/CN1602401A/zh active Pending
- 2002-11-28 AU AU2002358555A patent/AU2002358555A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03054448A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003054448A1 (de) | 2003-07-03 |
AU2002358555A1 (en) | 2003-07-09 |
US20050129961A1 (en) | 2005-06-16 |
CN1602401A (zh) | 2005-03-30 |
JP2005512797A (ja) | 2005-05-12 |
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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: 20040529 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: EVONIK DEGUSSA GMBH |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: EVONIK DEGUSSA GMBH |
|
17Q | First examination report despatched |
Effective date: 20090515 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B01D 53/04 20060101AFI20140616BHEP Ipc: F23J 15/00 20060101ALI20140616BHEP |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20141030 |
|
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: 20150310 |