DE3116086A1 - Dry desulphurisation process - Google Patents

Dry desulphurisation process

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Publication number
DE3116086A1
DE3116086A1 DE19813116086 DE3116086A DE3116086A1 DE 3116086 A1 DE3116086 A1 DE 3116086A1 DE 19813116086 DE19813116086 DE 19813116086 DE 3116086 A DE3116086 A DE 3116086A DE 3116086 A1 DE3116086 A1 DE 3116086A1
Authority
DE
Germany
Prior art keywords
fabric filter
downstream
desulphurisation
fed
filter
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.)
Ceased
Application number
DE19813116086
Other languages
German (de)
Inventor
Heribert Ing.(grad.) 4390 Gladbeck Dewert
Heinz Ing.(Grad.) 4600 Dortmund Gresch
Heinz Ing.(grad.) 4390 Gladbeck Hölter
Heinrich Ing.(grad.) 5490 Gladbeck Igelbüscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2935464A external-priority patent/DE2935464C2/en
Priority to DE19813116086 priority Critical patent/DE3116086A1/en
Application filed by Individual filed Critical Individual
Priority to BR8103078A priority patent/BR8103078A/en
Priority to NO811741A priority patent/NO811741L/en
Priority to DK227181A priority patent/DK227181A/en
Priority to US06/266,291 priority patent/US4388281A/en
Priority to EP81103973A priority patent/EP0044916B1/en
Priority to DE8181103973T priority patent/DE3175842D1/en
Priority to AT81103973T priority patent/ATE25008T1/en
Priority to DE19813146465 priority patent/DE3146465A1/en
Publication of DE3116086A1 publication Critical patent/DE3116086A1/en
Ceased legal-status Critical Current

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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
    • B01D53/06—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 moving adsorbents, e.g. rotating beds
    • B01D53/10—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 moving adsorbents, e.g. rotating beds with dispersed adsorbents
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Electrostatic Separation (AREA)

Abstract

The invention relates to a process and an apparatus for improving the desulphurisation of exhaust gases from fossil fuel- or waste-fired combustion plants or power stations, an electrostatic filter being connected downstream of the boiler. The desulphurisation is carried out using fresh lime, which is fed to the exhaust gases downstream of the electrostatic filter (2) and, together with these, passes the contacting and reactor internals (3) downstream of the electrostatic filter (2) until it is separated off in a downstream fabric filter (4). The sorbent collected in the fabric filter is ejected from the fabric filter (4) and pneumatically fed to the boiler (9) or the combustion chamber thereof. <IMAGE>

Description

Beschreibung und Erläuterung zur Zusatz-PatentanmeldungDescription and explanation of the additional patent application

Trocken-Entschwefelungs-Verfahren lt Zusatz zu P 29 35 464.1 Es ist bekannt, vorzugsweise bei Braunkohlenkraftwerken, das Trocken-Additiv, z.B. Kalk oder Dolomit vermischt mit dem Brennstoff oder auch allein, dem Feuerungsraum zuzuführen. Dry desulphurisation process according to addendum to P 29 35 464.1 It is known, preferably in lignite power stations, the dry additive, e.g. lime or dolomite mixed with the fuel or alone to be fed to the furnace.

Hierbei werden Entschwefelungsgrade von 60 % max.Desulfurization degrees of 60% max.

erzielt.achieved.

Diese Entschwefelungsrate reicht in der Regel bei sehr schwefelhaltiger Kohle nicht aus, um die vom Gesetzgeber vorgeschriebenen Reingaswerte zu erzielen.This desulfurization rate is usually sufficient for those with a very high sulfur content Coal is not used in order to achieve the clean gas values prescribed by the legislator.

Aus diesem Grunde wird vorgeschlagen, hinter dem Elektrofilter eine Kontaktstrecke bzw. eine Reaktorstrecke nachzuschalten, in der das trockene Additiv, das zur Rauchgasentschwefelung dienen soll, aufgegeben wird, und hinter dieser Reaktor- und Kontaktstreckentechnologie ist vorzugsweise ein Gewebefilter entsprechend der Patentanmeldung P 29 35 464.1 nachgeschaltet, so daß die hinter dem Elektrofilter auftretende Restimmission von z.B. 40 % mit dem Frischkalk bis zu 80 % gebunden werden kann, und der nicht reagierte Kalk oder Dolomit staub mit dem reagierten Additiv aus dem Gewebefilter der Feuerung oder dem Brennstoff - wie bekannt - zugeführt wird.For this reason, it is suggested that a Downstream contact section or a reactor section in which the dry additive, the to serve for flue gas desulfurization, is abandoned, and behind this reactor and contact path technology is preferably a fabric filter according to FIG Patent application P 29 35 464.1 downstream, so that the behind the electrostatic precipitator Any residual immission of e.g. 40% bound with the fresh lime up to 80% can be, and the unreacted lime or dolomite dust with the reacted Additive from the fabric filter of the furnace or the fuel - as known - supplied will.

In der beiliegenden Zeichnung ist dargestellt: mit (1) der Kessel mit (2) der Elektrofilter mit (3) die Reaktor- und/oder Kontaktstrecke mit (4) der Gewebefilter - System nach P 29 35 464.1 mit (5) der dem Gewebefilter nachgeschaltete Ventilator mit (6) das Transportmittel, das den chemisorbierten und noch freien Kalk bzw. das noch freie Additiv aus dem Gewebefilterbereich ausschleust und mittels pneumatischer Förderereinrichtung (7) dem Brennstoff vor dem Kessel (8) oder dem Brennraum (9) im Kessel zuführt.The attached drawing shows: with (1) the boiler with (2) the electrostatic precipitator with (3) the reactor and / or contact path with (4) the Fabric filter system according to P 29 35 464.1 with (5) the one downstream of the fabric filter Fan with (6) the means of transport that chemisorbed and still free Lime or the still free Additive discharged from the fabric filter area and the fuel in front of the boiler by means of a pneumatic conveyor device (7) (8) or the combustion chamber (9) in the boiler.

Durch diese erfindungsgemäße Vorrichtung und Anordnung zur Durchführung des Verfahrens wird folgende trockene Entschwefelung möglich: Durch indirekte Beimischung des Additivs im Brennraum ca. 60 % Entschwefelung und bei z.B. auf dem S02-Gehalt des Rohgases 2-fach stöchiometrisch berechnet als Frischkalkzugabe zwischen Elektrofilter und Gewebefilter auf die verbleibenden restlichen 40 % ist ein Wirkungsgrad von 80 % erzielbar, d.h. 32 % Abscheidung bezogen auf den Ausgangswert des S02 , addiert zu 60 % ergibt 92 C/o theoretisch möglichen Wirkungsgrad.Through this inventive device and arrangement for implementation The following dry desulphurisation is possible with the process: Through indirect admixing of the additive in the combustion chamber approx. 60% desulphurisation and e.g. on the S02 content of the raw gas calculated twice stoichiometrically as the addition of fresh lime between the electrostatic precipitator and fabric filter on the remaining remaining 40% is an efficiency of 80% achievable, i.e. 32% separation based on the initial value of the S02, added 60% results in 92 C / o theoretically possible efficiency.

Es ist durchaus möglich, den stöchiometrischen Faktor zu senken, wenn diese 92 % nicht notwendig sind, auf z.B. 1,5-fach stöchiometrische Zugabe.It is entirely possible to lower the stoichiometric factor, though this 92% is not necessary, to e.g. 1.5 times the stoichiometric addition.

Jedoch, durch die erfindungsgemäße Zugabe des Frischkalks hinter dem Elektrofilter und nach dem Gebrauch im Gewebefilter, Zugabe in den Brennraum und/oder mit dem Brennstoff gemischt, wird diese wesentlich höhere Entschwefelungsrate erzielt.However, by adding the fresh lime according to the invention behind the Electrostatic precipitator and after use in the fabric filter, adding to the combustion chamber and / or mixed with the fuel, this much higher desulphurisation rate is achieved.

Zusatz-Patent anspruch: L e e r s e i t eAdditional patent claim: L e r s e i t e

Claims (1)

Zusatz-Patentanspruch: Anspruch 1 Verfahren und Vorrichtung nach P 29 35 464.1 zur Verbesserung der Entschwefelung in vorzugsweise Fossil-Kraftwerken und Müllverbrennungsanlagen dadurch gekennzeichnet, daß der Frischkalk hinter dem Elektrofilter zugeführt wird und hier über Kontakt- und Reaktoreinbauten dem Gewebefilter zugeführt wird, und aus dem Gewebefilter das reagierte und nicht reagierte Additiv ausgeschleust und vorzugsweise pneumatisch oder hydraulisch dem Fossil-Brennstoff und/oder auch dem Brennraum zugeführt wird.Additional claim: Claim 1 method and device according to P. 29 35 464.1 to improve desulphurisation in preferably fossil power plants and waste incineration plants characterized in that the fresh lime behind the Electrostatic precipitator is fed and here via contact and reactor internals to the fabric filter is supplied, and from the fabric filter the reacted and unreacted additive ejected and preferably pneumatically or hydraulically the fossil fuel and / or is also fed to the combustion chamber.
DE19813116086 1979-09-01 1981-04-23 Dry desulphurisation process Ceased DE3116086A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE19813116086 DE3116086A1 (en) 1979-09-01 1981-04-23 Dry desulphurisation process
BR8103078A BR8103078A (en) 1980-05-24 1981-05-18 PROCESS AND DEVICE FOR THE DISPOSAL OF Sulfurous Anhydride AND OTHER HARMFUL SUBSTANCES OF SMOKE GAS
NO811741A NO811741L (en) 1980-05-24 1981-05-21 PROCEDURE AND DEVICE FOR SO2 REMOVAL AND OTHER SMOKING GAS
DK227181A DK227181A (en) 1980-05-24 1981-05-22 PROCEDURE AND APPARATUS FOR THE REMOVAL OF SULFUR DIOXIDE AND OTHER HARMFUL MATERIALS FROM ROEGGAS
US06/266,291 US4388281A (en) 1980-05-24 1981-05-22 Noxious-component removal from flue gas and compositions useful therefor
EP81103973A EP0044916B1 (en) 1980-05-24 1981-05-23 Process and apparatus for the separation of sulfur dioxide and other pollutants from flue gas
AT81103973T ATE25008T1 (en) 1980-05-24 1981-05-23 METHOD AND APPARATUS FOR REMOVING SULFUR DIOXIDE AND OTHER POLLUTANTS FROM FLUE GAS.
DE8181103973T DE3175842D1 (en) 1980-05-24 1981-05-23 Process and apparatus for the separation of sulfur dioxide and other pollutants from flue gas
DE19813146465 DE3146465A1 (en) 1981-04-23 1981-11-24 Dry flue gas desulphurisation with upstream partial dust precipitation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2935464A DE2935464C2 (en) 1979-09-01 1979-09-01 Process for dry chemisorption in filter separators
DE19813116086 DE3116086A1 (en) 1979-09-01 1981-04-23 Dry desulphurisation process

Publications (1)

Publication Number Publication Date
DE3116086A1 true DE3116086A1 (en) 1983-02-03

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ID=25780831

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813116086 Ceased DE3116086A1 (en) 1979-09-01 1981-04-23 Dry desulphurisation process

Country Status (1)

Country Link
DE (1) DE3116086A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318880A1 (en) * 1981-11-24 1985-01-17 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Semi-dry flue gas desulphurisation having multi-stage use of chemisorption agent - preferably use of lime
AT389652B (en) * 1983-03-12 1990-01-10 Cleve Urban Dipl Ing METHOD FOR SEPARATING GAS SHAPED SUBSTANCES IN SMOKE GASES

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2520045A1 (en) * 1975-05-06 1976-11-25 Heinz Hoelter Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage
DE2645026A1 (en) * 1976-10-06 1978-04-13 Steag Ag PROCESS AND SYSTEM FOR PROCESSING SMOKE GASES, E. THE SMOKE GASES FROM POWER PLANTS, FIRED WITH FOSSIL FUELS, IN PARTICULAR WITH TON COAL
DE2935464A1 (en) * 1979-09-01 1981-03-19 Ing.(grad.) Heinz 4390 Gladbeck Hölter METHOD FOR FILTERING SEPARATORS FOR DRY CHEMISORPTION

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2520045A1 (en) * 1975-05-06 1976-11-25 Heinz Hoelter Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage
DE2645026A1 (en) * 1976-10-06 1978-04-13 Steag Ag PROCESS AND SYSTEM FOR PROCESSING SMOKE GASES, E. THE SMOKE GASES FROM POWER PLANTS, FIRED WITH FOSSIL FUELS, IN PARTICULAR WITH TON COAL
DE2935464A1 (en) * 1979-09-01 1981-03-19 Ing.(grad.) Heinz 4390 Gladbeck Hölter METHOD FOR FILTERING SEPARATORS FOR DRY CHEMISORPTION

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chem.-Ing.-Techn. 40. Jg., 1968, H. 21/22, S. 1082-1086 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318880A1 (en) * 1981-11-24 1985-01-17 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Semi-dry flue gas desulphurisation having multi-stage use of chemisorption agent - preferably use of lime
AT389652B (en) * 1983-03-12 1990-01-10 Cleve Urban Dipl Ing METHOD FOR SEPARATING GAS SHAPED SUBSTANCES IN SMOKE GASES

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