DE3440808A1 - Catalyst for NOx production, preferably downstream of fossil-fuel power stations - Google Patents

Catalyst for NOx production, preferably downstream of fossil-fuel power stations

Info

Publication number
DE3440808A1
DE3440808A1 DE19843440808 DE3440808A DE3440808A1 DE 3440808 A1 DE3440808 A1 DE 3440808A1 DE 19843440808 DE19843440808 DE 19843440808 DE 3440808 A DE3440808 A DE 3440808A DE 3440808 A1 DE3440808 A1 DE 3440808A1
Authority
DE
Germany
Prior art keywords
catalyst
flotation
mining
additive
coal
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
DE19843440808
Other languages
German (de)
Other versions
DE3440808C2 (en
Inventor
Heribert Dipl.-Ing. 4390 Gladbeck Dewert
Heinrich Ing.(grad.) 4600 Dortmund Gresch
Heinz Dipl.-Ing. Hölter
Heinrich Dipl.-Ing. 4390 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
Application filed by Individual filed Critical Individual
Priority to DE19843440808 priority Critical patent/DE3440808A1/en
Priority to DE19853523356 priority patent/DE3523356A1/en
Publication of DE3440808A1 publication Critical patent/DE3440808A1/en
Application granted granted Critical
Publication of DE3440808C2 publication Critical patent/DE3440808C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • 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
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon

Abstract

It has already been proposed to use washing and/or flotation refuse from the underground zone of coal mining and/or ore mining to produce catalysts. By adding an additive, for example ammonia, it is possible to use a catalyst of this type to convert NOx from exhaust gases into environmentally friendly substances such as elemental nitrogen and water. Since difficulties in relation to the environment arise as a result of adding ammonia as an additive, the invention proposes that carbon materials such as coal, sawdust, peat etc. are additionally added to catalyst support materials, preferably composed of washing and flotation refuse from underground mining or similar incidentally encountered support materials and ceramisation is carried out only to an extent sufficient for a large part of the carbon materials in the catalyst material to remain behind as carbonisation product.

Description

"Katalysatoren für die NO -Reduktion, vorzugsweise"Catalysts for NO reduction, preferably

hinter fossilen Kraftwerken" Es ist bereits eine Katalysatormasse zur Herstellung von Katalysatoren vorgeschlagen worden, die aus Waschbergen und/oder Flotationsbergen aus dem Untertage-Bereich des Steinkohlenbergbaus und/oder Erzbergbaus besteht.behind fossil power plants "It's already a catalyst mass for the production of catalysts have been proposed from wash mountains and / or Flotation mountains from the underground area of hard coal mining and / or ore mining consists.

Es ist bekannt, daß Katalysatoren erst durch die Zugabe eines Additivs, z. B. Ammoniak (NH3) in einem bestimmten Mol-Verhältnis die Möglichkeit bieten, NO aus Abgasen in umweltfreundliche Stoffe, wie elementaren Stickstoff und Wasser, zu wandeln.It is known that catalysts are only damaged by the addition of an additive, z. B. Ammonia (NH3) in a certain molar ratio offer the possibility of NO from exhaust gases into environmentally friendly substances, such as elemental nitrogen and water, to walk.

Jedoch durch die Zugabe vo Ammoniak (NH3) als Additiv treten Schwierigkeiten auf, die die Umweltfreundlichkeit dieser Verfahrenstechnik beeinflussen.However, difficulties arise with the addition of ammonia (NH3) as an additive that affect the environmental friendliness of this process technology.

Aus diesem Grunde wird erfindungsgemäß vorgeschlagen, die Katalysatorträgermassen aus Flotationsbergen, die von Natur aus einen hohen "C"-Anteil besitzen, zusätzlich mit Kohle, Sägemehl oder sonstigen organischen Stoffen anzureichern und die Keramisierung nur so weit zu betreiben, daß ein Teil des vorhandenen Kohlenstoffes im Keramisierungsmaterial als angeschwelte Masse erhalten bleibt. Hierdurch ist erfindungsgemäß die Gewähr gegeben, daß die Wandlung von NOx über diese Katalysatormasse ohne Ammoniak (NH3) oder ein anderes Additiv in freien Stickstoff, Kohlendioxid und Wasser erfolgen kann.For this reason it is proposed according to the invention to use the catalyst support materials from flotation mountains that naturally have a high "C" content with Enrich coal, sawdust or other organic substances and ceramization to operate only so far that a part of the existing carbon in the ceramizing material is retained as a swollen mass. This is the guarantee according to the invention given that the conversion of NOx via this catalyst mass without ammonia (NH3) or another additive in free nitrogen, carbon dioxide and water can.

Dieses wurde überraschend gefunden.This was surprisingly found.

Claims (1)

PATENTANSPRUCH.PATENT CLAIM. Verfahren zur Herstellung von Katalysatoren, d#ie bevorzugt ohne Additive, wie z.B. Ammoniak (NH3), NO in umweltfreundliche Stoffe wandeln, wie N2 C02 und Wasser, dadurch gekennzeichnet, daß Katalysator-Trägermassen, vorzugsweise bestehend aus Waschbergen oder Flotationsbergen aus dem untertägigen Bergbau o.ä. gefundene Trägermassen zusätzlich mit C-Stoffen versetzt werden, wie Kohle, Sägemehl, Torf usw. und nur so weit keramisiert werden, daß ein Großteil der C-Stoffe in der Katalysatormasse als Schwelprodukt erhalten bleibt.Process for the production of catalysts, preferably without additives, such as ammonia (NH3), convert NO into environmentally friendly substances, such as N2 and C02 Water, characterized in that catalyst support materials, preferably consisting found from wash mountains or flotation mountains from underground mining or the like Carrier masses are additionally mixed with carbon substances, such as coal, sawdust, peat etc. and are ceramized only so far that a large part of the C-substances in the catalyst mass remains as a smoldering product.
DE19843440808 1984-11-08 1984-11-08 Catalyst for NOx production, preferably downstream of fossil-fuel power stations Granted DE3440808A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19843440808 DE3440808A1 (en) 1984-11-08 1984-11-08 Catalyst for NOx production, preferably downstream of fossil-fuel power stations
DE19853523356 DE3523356A1 (en) 1984-11-08 1985-06-29 Preparation of catalysts for NOx reduction, preferably downstream of fossil-fuel power stations, by ceramicising the composition with the exclusion of air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843440808 DE3440808A1 (en) 1984-11-08 1984-11-08 Catalyst for NOx production, preferably downstream of fossil-fuel power stations

Publications (2)

Publication Number Publication Date
DE3440808A1 true DE3440808A1 (en) 1986-05-07
DE3440808C2 DE3440808C2 (en) 1987-07-23

Family

ID=6249794

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843440808 Granted DE3440808A1 (en) 1984-11-08 1984-11-08 Catalyst for NOx production, preferably downstream of fossil-fuel power stations

Country Status (1)

Country Link
DE (1) DE3440808A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007852A1 (en) * 1986-06-18 1987-12-30 Bergwerksverband Gmbh Process for producing an active carbon catalyst
US6540449B1 (en) 1999-10-26 2003-04-01 Sandvik Aktiebolag Tool for chip removing machining

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228548B (en) * 1958-12-24 1966-11-10 Houilleres Bassin Du Nord Process for the production of ceramic masses from wash mountains occurring in mining
DE2631875A1 (en) * 1976-04-08 1977-10-13 Ngk Insulators Ltd CERAMIC CORDIERITE COMPOSITE BODY AND PROCESS FOR ITS PRODUCTION
DE3422779A1 (en) * 1984-06-20 1985-12-19 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Use of ceramicising substrate compositions for producing catalysts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228548B (en) * 1958-12-24 1966-11-10 Houilleres Bassin Du Nord Process for the production of ceramic masses from wash mountains occurring in mining
DE2631875A1 (en) * 1976-04-08 1977-10-13 Ngk Insulators Ltd CERAMIC CORDIERITE COMPOSITE BODY AND PROCESS FOR ITS PRODUCTION
DE3422779A1 (en) * 1984-06-20 1985-12-19 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Use of ceramicising substrate compositions for producing catalysts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007852A1 (en) * 1986-06-18 1987-12-30 Bergwerksverband Gmbh Process for producing an active carbon catalyst
US4921826A (en) * 1986-06-18 1990-05-01 Bergwerksverband Gmbh Process for producing an active carbon catalyst
US6540449B1 (en) 1999-10-26 2003-04-01 Sandvik Aktiebolag Tool for chip removing machining

Also Published As

Publication number Publication date
DE3440808C2 (en) 1987-07-23

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