Demonstration plant for an energy-saving flue gas desulphurization process. Demonstration project, Final report

Directorate-General For Energy

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• Publié par: DIRECTORATE-GENERAL-FOR-ENERGY
• Nombre de lectures: 40
• Langue: English
• Poids de l'ouvrage: 8 Mo

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Commission of the European Communities
Kommission der Europäischen Gemeinschaften
energy/energie
Demonstration plant for an energy-saving
flue gas desulphurization process
Demonstrationsanlage für energiesparendes
Rauchgasentschwefelungsverfahren
Demonstration project/Demonstrationsprojekt Commission of the European Communities
Kommission der Europäischen Gemeinschaften
ΒΠ9 &
wIIG
Demonstration plant for an energy-saving
flue gas desulphurization process
Demonstrationsanlage für energiesparendes
Rauchgasentschwefelungsverfahren
J. Fischer, W. Schulte
Walther & Cie. AG
Köln­Dellbrück, BR Deutschland
Contract No/Vertrag Nr. EE/118/79­DE
Final report/Schlußbericht
Directorate­General 'Energy'
Generaldirektion Energie
1986 EUR 10501 EN/DE Published by the
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate-General
Telecommunications, Information Industries and Innovation
Bâtiment Jean Monnet
LUXEMBOURG
Veröffentlicht durch
KOMMISSION DER EUROPÄISCHEN GEMEINSCHAFTEN
Generaldirektion
Telekommunikation, Informationsindustrien und Innovation
Bâtiment Jean Monnet
LUXEMBOURG
LEGAL NOTICE
Neither the Commission of the European Communities nor any person acting on
behalf of then is responsible for the use which might be made of the
following information
HINWEIS
Weder die Kommission der Europäischen Gemeinschaften noch Personen, die
im Namen dieser Kommission handeln, sind für die etwaige Verwendung der
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Cataloguing data can be found at the end of this publication
Bibliographische Daten befinden sich am Ende der Veröffentlichung
Luxembourg: Office for Official Publications of the European Communities, 1986
Luxemburg: Amt für amtliche Veröffentlichungen der Europäischen Gemeinschaften, 1986
ISBN 92-825-6385-5 Catalogue number/Katalognummer: CD-ND-86-010-2C-C
© ECSC-EEC-EAEC, Brussels · Luxembourg, 1986
© EGKS-EWG-EAG, Brüssel · Luxemburg, 1986
Printed in Belgium DEMONSTRATION PLANT FOR ENERGY SAVING FLUE GAS
DESULPeURIZATION PROCESS
- Ill CONTENTS
Page
Summary 1
1. Aim, Originality and Location of the Project 2
2. Description of the Plant 3
2.1 Pmmonia Storage and Evaporator Station 4
2.2 Flue Gas Scrubbing and Reheating 7
2.3 Oxidation and Spray Drying .. 9
2.A Product Treatment and Product Storage 11
2.5 Control Engineering 14
2.6 Electrotechnical Equipment7
3. Realization of the Project8
4. Startup ana Practical Experience 2o
4.1 Practical Experience with the Scrubbing System 21
4.2le with the Regenerative Heat Exchanger 24
4.3l Experience with the Blower 5
4.4 Practicale with the Aerosol Separating Filter 27
4.5l Experience with the Product Treatment 29
4.6 Summary of Startup and of Practical Experience 30
Ammonium Sulphate as End Product 3 2
Time Table 6.
Costs 3 5
Economic Calculations8
44
9. Prospects
46
10. Miscellaneous
Enclosure 1: Fig. 1-4 47 e 2: Tables 1-7 53
Enclosure 3: Component-Specification No. 1 - 30 61 e: Extract from the Project Regulation 9
Enclosure 5: Photos of the Plant 100
v Summary of the Final Report
The aim of the project was the development and construction of a Walther
flue gas aesulphurization demonstration plant according to the WALTHER
waste-water-free principle including startup and test operation of the
plant in order to prove that the Walther desulphurization process allows
the reheating of the cleaned gases as well as the spray drying of the
ammonium sulphate solution produced during the scrubbing stage by
utilizing the waste heat of the flue gases without the need for
additional energy.
After an operating period of 2 years now, summing up, it may be said
that the flue gas desulphurization plant on the basis of the Walther
process in the superpower station Mannheim has up to now- come up to the
expectations regarding cleaning effectivity ana end product quality of
the final product which is utilized as fertilizer. Thus, several
different SO, contents were reached which are clearly below the
^ 3
guaranteedvalueof 180mg/Nmdry,in the case of S09 inlet
■5*■
concentrationsupto 4,200mg/Νττdry.
Due to reheating the scrubbed flue gases by meansofaregenerative heat
exchanger, approximately 1,800 kg/h EL fuel oil could be saved in
full-load operation.
Nobody had expected that there would be no difficulties in the technical
startup of a new process. Possible troubles had been expected to arise
above all in the new parts of the process, i.e. in the scrubbing system
ana in the oxidation. Contrary to that, difficulties occurea almost
exclusively in the 'Conventional" part of the plant. These troubles
mostly could be explained by the flowability of the ammonium sulphate
powder. These problems had not been recognized in the test plant because
of its low outcome.
After the completion of the last moüification measures, a trouble-free
continuous operation can now be expected.
1 -1. Aim, Originality and Location of the Project
The aim of the project was the development and construction of a
Walther flue gas desuphurization demonstration plant including
startup and test operation of the plant in order to prove that
the Walther desulphurization process allows the reheating of the
cleaned gases as well as the spray drying of the ammonium
sulphate solution produced during the scrubbing stage by
utilizing the waste heat of the flue gases without the need for
additional energy.
Furthermore, the other important advantages, such as
- no waste water,
- production of the marketable nitrogen fertilizer ammonium
sulphate,
should be demonstrated.