DE3123064A1 - "Method for improved utilisation of chemisorbents in gas purification plants" - Google Patents

"Method for improved utilisation of chemisorbents in gas purification plants"

Info

Publication number
DE3123064A1
DE3123064A1 DE19813123064 DE3123064A DE3123064A1 DE 3123064 A1 DE3123064 A1 DE 3123064A1 DE 19813123064 DE19813123064 DE 19813123064 DE 3123064 A DE3123064 A DE 3123064A DE 3123064 A1 DE3123064 A1 DE 3123064A1
Authority
DE
Germany
Prior art keywords
chemisorption
chemisorbents
gas purification
hydrated lime
steam
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.)
Granted
Application number
DE19813123064
Other languages
German (de)
Other versions
DE3123064C2 (en
Inventor
Heribert Ing.(grad.) 4390 Gladbeck Dewert
Heinz Ing.(Grad.) 4600 Dortmund Gresch
Heinz Ing.(grad.) 4390 Gladbeck Hölter
Heinrich Ing.(grad.) 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
Application filed by Individual filed Critical Individual
Priority to DE19813123064 priority Critical patent/DE3123064A1/en
Publication of DE3123064A1 publication Critical patent/DE3123064A1/en
Application granted granted Critical
Publication of DE3123064C2 publication Critical patent/DE3123064C2/de
Granted 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
    • B01D53/34—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
    • B01D53/02—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

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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)
  • Treating Waste Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

The invention relates to repeated use of chemisorbents for gas purification, particularly those reacting on the surface, such as, e.g. hydrated lime. It is known to recycle these chemisorbents after first-time use, into the chemisorption section where they are again able to absorb pollutants, but only in small amounts. The utilisation of the chemisorbents is improved by these being reprocessed, prior to recycling, in a steam-jet mill and being fed once more to the chemisorption appliance. Reprocessing in the steam-jet mill results not only in new surfaces being formed, owing to comminution of the particles, but these are, moreover, activated by moistening.

Description

Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application

"Verfahren zur besseren Nutzung von Chemisorptions mitte In in #asreinigungsanlagen" Zur besseren Ausnutzung des Chemisorptionsmittels wird vorgeschlagen, das Ohemisorptionsmittel, das bereits einmal den Chemisorptionsreaktor oder die Chemisorptionskontaktstrecke und den Chemisorptionsfilter durchlaufen hat, bestehend z.B. aus Kalkhydrat, mechanisch oder pneumatisch zu der Chemisorptionskontakt strecke zurückzufördern."Process for the better use of chemisorption center In in #as cleaning systems" For better utilization of the chemisorbent, it is proposed that the hemisorbent, the chemisorption reactor or the chemisorption contact section and has passed through the chemisorption filter, consisting e.g. of hydrated lime, mechanically or pneumatically to the chemisorption contact route back.

Das zurückgeförderte Material hat bereits an der Oberfläche mit SO2, HC1, HF und zum Teil auch mit CO, reagiert und ist inaktiv.The returned material already has SO2 on the surface, HC1, HF and partly also with CO, reacts and is inactive.

Jedoch der Innenkern ist aktiv und wird bei nochmaligem Einfügen in die Kontaktzonen nicht oder nur geringfügig zur Chemisorption nu ar.However, the inner core is active and becomes active when it is repeated Insert in the contact zones not or only slightly for chemisorption only.

Um das oberflächenreagierte Chemisorptionsmaterial, vorzugsweise Kalkhydrat aktiv zu gestalten und den Chemisorptionsmittelverbrauch wesentlich herunterzudrücken - denn dieser ist in der Regel zwei- und mehrfach stöchiometrisch zur Summe aller Schadstoffe in der Trockenchemisorptionsstufe aufzugeben - und um einen wirtschaftlich vertretbaren Abscheidegrad zu erzielen, wird erfindungsgemäß vorgeschlagen, die an den Oberflächen reagierten Chemisorptionsteilchen durch Dampfstrahlmühlen aufzumahlen und gleichzeitig erfindungsgemäß durch den expandierenden Dampf zu befeuchten, so daß hierdurch in zweifacher Weise die Chemisorption a) durch Bilden neuer Oberflächen durch den Dampfstrahlprall- und Mahleffekt und b) durch das Befeuchten der neu gebildeten Oberfläche erfindungsgemäß wirtschaftlich machbar zu gestalten ist.Around the surface-reacted chemisorption material, preferably hydrated lime to actively shape and significantly reduce the chemical sorbent consumption - because this is usually two or more stoichiometric to the sum of all To give up pollutants in the dry chemisorption stage - and to do it economically To achieve a reasonable degree of separation is proposed according to the invention, the Chemisorption particles reacted on the surfaces to be ground up using steam jet mills and at the same time to humidify according to the invention by the expanding steam, so that this in two ways the chemisorption a) by the formation of new surfaces by the steam jet impact and grinding effect and b) by moistening the newly formed surface is to be made economically feasible according to the invention.

In der beiliegenden Zeichnung ist das erfindungsge mäße Verfahren dargestellt: mit (1) die Kontaktstrecke, in der das Chemisorptionsmittel, z.B. Kalkhydrat, mit dem Rohgas, das mit ECl, Ion?, SO2, C02 und weiteren Schadstoffen z.B. angereichert ist, kontaktiert wird; mit (2) das Chemisorptionsfilter; mit (3) die Kalkhydratrückführung in die Kontaktstrecke durch Zwischenschalten einer Dampfstrahlmühle (4); mit (5) das Einführen von frischem Kalkhydrat in die Chemisorptionsstrecke; mit (6) Teilmengenabführung aus dem rückläufigen, bereits reagierten Kalkhydrat; mit (7) die Dampfzuführung; mit (8) der Rohgaseintritt; mit (9) der Reingasaustrittg mit (10) der Eintrag des reaktivierten Kalks.In the accompanying drawing is the method according to the invention shown: with (1) the contact section in which the chemisorbent, e.g. hydrated lime, with the raw gas, which is enriched with ECl, Ion ?, SO2, C02 and other pollutants, for example is being contacted; with (2) the chemisorption filter; with (3) the hydrated lime recycling into the contact section by interposing a steam jet mill (4); with (5) introducing fresh hydrated lime into the chemisorption section; with (6) partial discharge from the declining, already reacted hydrated lime; with (7) the Steam supply; with (8) the raw gas inlet; with (9) the clean gas outlet with (10) the entry of the reactivated lime.

Patentanspruch: L e e r s e i t eClaim: L e r s e i t e

Claims (1)

Patentanspruch: Anspruch 1 Verfahren zur besseren Nutzung von Chemisorptionsmitteln, vorzugsweise Kalkhydrat in trockenen Chemisorptionsanlagen dadurch gekennzeichnet, daß das rückgeführte Kalkhydrat bzw. das Chemisorptionsmittel aus dem Chemisorptionsfilter anteilmäßig durch eine Dampfstrahlmühle aufbereitet, neu der Chemisorption über die Kontakt strecke und/oder dem Filter zugeführt wird.Claim: Claim 1 method for better use of chemisorbents, preferably hydrated lime in dry chemisorption systems characterized by that the recirculated hydrated lime or the chemisorbent from the chemisorption filter proportionately processed by a steam jet mill, new to chemisorption the contact route and / or the filter is fed.
DE19813123064 1981-06-11 1981-06-11 "Method for improved utilisation of chemisorbents in gas purification plants" Granted DE3123064A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813123064 DE3123064A1 (en) 1981-06-11 1981-06-11 "Method for improved utilisation of chemisorbents in gas purification plants"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813123064 DE3123064A1 (en) 1981-06-11 1981-06-11 "Method for improved utilisation of chemisorbents in gas purification plants"

Publications (2)

Publication Number Publication Date
DE3123064A1 true DE3123064A1 (en) 1983-01-05
DE3123064C2 DE3123064C2 (en) 1990-02-22

Family

ID=6134388

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813123064 Granted DE3123064A1 (en) 1981-06-11 1981-06-11 "Method for improved utilisation of chemisorbents in gas purification plants"

Country Status (1)

Country Link
DE (1) DE3123064A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196481A1 (en) * 1985-03-13 1986-10-08 Von Roll Ag Method of and apparatus for removing pollutants from a gaseous carrier
US6228150B1 (en) * 1996-11-25 2001-05-08 Armstrong Medical Limited Carbon dioxide absorbent in anaesthesiology

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4101439A1 (en) * 1990-01-18 1991-08-01 Mitsubishi Heavy Ind Ltd Combustion gas desulphurisation within furnace - followed by wet desulphurisation of off-gas

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936839A1 (en) * 1979-09-12 1981-04-16 CEAG Verfahrenstechnik GmbH, 4714 Selm Water-purification with active carbon - regenerated in solid bed by passage of hot steam-contg. gas

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936839A1 (en) * 1979-09-12 1981-04-16 CEAG Verfahrenstechnik GmbH, 4714 Selm Water-purification with active carbon - regenerated in solid bed by passage of hot steam-contg. gas

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DD-Z: Chem.Techn. 19. Jahrg. H.9, Sept.1967, S.553 - 556 *
DE-Z: Staub-Reinhaltung Luft, 36, 1976, Nr.7, S.292 - 297 *
DE-Z: Staub-Reinhaltung Luft, 44, 1984, Nr.2, S.81-84 *
JP-Z: Journal of Chemical Eng. of Japan, Vol.13, Nr. 3, 1980, S.214 - 219 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196481A1 (en) * 1985-03-13 1986-10-08 Von Roll Ag Method of and apparatus for removing pollutants from a gaseous carrier
US6228150B1 (en) * 1996-11-25 2001-05-08 Armstrong Medical Limited Carbon dioxide absorbent in anaesthesiology

Also Published As

Publication number Publication date
DE3123064C2 (en) 1990-02-22

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Legal Events

Date Code Title Description
8101 Request for examination as to novelty
8105 Search report available
8105 Search report available
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee