1、BRITISH STANDARD BS EN 12952-14:2004 Water-tube boilers and auxiliary installations Part 14: Requirements for flue gas DENOX-systems using liquified pressurized ammonia and ammonia water solution The European Standard EN 12952-14:2004 has the status of a British Standard ICS 27.040; 27.060.30 BS EN
2、12952-14:2004 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 24 June 2004 BSI 24 June 2004 ISBN 0 580 43979 8 National foreword This British Standard is the official English language version of EN 12952-14:2004. The UK participation in its
3、preparation was entrusted to Technical Committee PVE/2, Water-tube boilers, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publication
4、s referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary
5、 provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpret
6、ation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 25 and a back cover. The BSI copyrig
7、ht notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1295214 June2004 ICS27.040;27.060.30 Englishversion WatertubeboilersandauxiliaryinstallationsPart14: Requiremen
8、tsforfluegasDENOXsystemsusingliquified pressurizedammoniaandammoniawatersolution ChaudirestubesdeauetinstallationsauxilairesPartie 14:Exigencespourlessytmesdednitrification(DENOX) desfumesutilisantlammoniacliqufisouspressionet lammoniaqueliquide WasserrohrkesselundAnlagenkomponentenTeil14: Anforderu
9、ngenanRauchgasDENOXAnlagendieflssiges AmmoniakundAmmoniakwasserlsungeinsetzen ThisEuropeanStandardwasapprovedbyCENon24March2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.U
10、ptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitso
11、wnlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,
12、Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembe
13、rs. Ref.No.EN1295214:2004:EEN 12952-14:2004 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .6 4 Installations for the storage of liquefied pressurized ammonia .6 4.1 Plant design6 4.2 Materials .6 4.3 Design of storage vessel 9 4.4 Manufacture10 4.5 Tests an
14、d inspections prior to commissioning12 4.6 Piping systems for ammonia13 4.7 Electrical equipment14 4.8 Equipment of storage vessels14 4.9 Evaporator station .15 5 Installations for the storage of liquid ammonia16 5.1 Plant design16 5.2 Materials .16 5.3 Design of storage vessel 18 5.4 Manufacture18
15、5.5 Testing and inspection prior to commissioning 19 5.6 Pipe systems for ammonia .19 5.7 Electrical equipment20 5.8 Equipment 20 5.9 Production of ammonia vapour21 Annex A (informative) Operational aspects23 Annex ZA (informative) Relationship between this European Standard and the Essential Requir
16、ements of EU Directive for Pressure Equipment 24 Bibliography 25 EN 12952-14:2004 (E) 3 Foreword This document (EN 12952-14:2004) has been prepared by Technical Committee CEN/TC 269 “Shell and water- tube boilers”, the secretariat of which is held by DIN. This European Standard shall be given the st
17、atus of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2004, and conflicting national standards shall be withdrawn at the latest by December 2004. This document has been prepared under a mandate given to CEN by the European Commission and
18、 the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. The European Standard EN 12952 concerning water-tube boilers and auxiliary installations consists
19、 of the following parts: Part 1: General Part 2: Materials for pressure parts of boilers and accessories Part 3: Design and calculation for pressure parts Part 4: In-service boiler life expectancy calculations Part 5: Workmanship and construction of pressure parts of the boiler Part 6: Inspection du
20、ring construction; documentation and marking of pressure parts of the boiler Part 7: Requirements for equipment for the boiler Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler Part 9: Requirements for firing systems for pulverized solid fuels for the boiler Part 10
21、: Requirements for safeguards against excessive pressure Part 11: Requirements for limiting devices of the boiler and accessories Part 12: Requirements for boiler feedwater and boiler water quality Part 13: Requirements for flue gas cleaning systems Part 14: Requirements for flue gas DENOX-systems u
22、sing liquified pressurized ammonia and ammonia water solution Part 15: Acceptance tests Part 16: Requirements for grate and fluidized-bed firing systems for solid fuels for the boiler CR 12952-17: Water-tube boilers and auxiliary installations Part 17: Guideline for the involvement of an inspec- tio
23、n body independent of the manufacturer Although these Parts may be obtained separately, it should be recognized that the parts are interdependent. As such, the design and manufacture of boilers requires the application of more than one Part in order for the require- ments of the standard to be satis
24、factorily fulfilled. NOTE Part 4 and 15 are not applicable during the design, construction and installation stages. The annex A of this European Standard is informative. This document includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of
25、the following coun- tries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto- nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia,
26、Spain, Sweden, Switzerland and United Kingdom. EN 12952-14:2004 (E) 4 1 Scope This draft European Standard covers the safety requirements regarding the storage and use of: liquefied pressurized ammonia for steam boiler plants; liquid ammonia water solution for the reduction of NOx in the flue gas fr
27、om boiler plants. Annex A summarizes the operational aspects. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed herea
28、fter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 287-1, Qua
29、lification test of welders Fusion welding Part 1: Steels. EN 764:1994, Pressure equipment Terminology and symbols Pressure, temperature, volume. EN 764-7, Pressure equipment Part 7: Safety systems for unfired pressure equipment. EN 1011-1, Welding Recommendations for welding of metallic materials Pa
30、rt 1: General guidance for arc welding. EN 1011-2, Welding Recommendations for welding of metallic materials Part 2: Arc welding of ferritic steels. EN 1011-3, Welding Recommendations for welding of metallic materials Part 3: Arc welding of stainless steels. EN 1043-1, Destructive tests on welds in
31、metallic materials Hardness testing Part 1: Hardness test on arc welded joints. EN 1043-2, Destructive tests on welds in metallic materials Hardness testing Part 2: Micro hardness testing on welded joints. EN 1563, Founding Spheroidal graphite cast irons. EN 1712, Non-destructive examination of weld
32、s Ultrasonic examination of welded joints Acceptance levels. EN 1713, Non-destructive examination of welds Ultrasonic examination Characterization of indications in welds. EN 1714, Non-destructive examination of welds Ultrasonic examination of welded joints. EN 10002-1, Metallic materials Tensile te
33、sting Part 1: Method of test at ambient temperature. EN 10025, Hot rolled products of non-alloy structural steels Technical delivery conditions EN 10028-3, Flat products made of steels for pressure purposes Part 3: Weldable fine grain steels, normalized. EN 10028-7, Flat products made of steels for
34、pressure purposes Part 7: Stainless steels. EN 10204:1991, Metallic products Types of inspection documents. EN 10213-2, Technical delivery conditions for steel castings for pressure purposes Part 2: Steel grades for use at room temperature and elevated temperatures. EN 12952-14:2004 (E) 5 EN 10216-1
35、, Seamless steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with specified room temperature properties. EN 10216-2, Seamless steel tubes for pressure purposes Technical delivery conditions Part 2: Non-alloy and alloy steel tubes with specified elevated te
36、mperature properties. EN 10216-3, Seamless steel tubes for pressure purposes Technical delivery conditions Part 3: Alloy fine grain steel tubes. EN 10217-1, Welded steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with specified room temperature properties
37、. EN 10222-4, Steel forgings for pressure purposes Part 4: Weldable fine grain steels with high proof strength. EN 10228-3, Non-destructive testing of steel forgings Part 3: Ultrasonic testing of ferritic or martensitic steel for- gings. EN 12266-1:2003, Industrial valves Testing of valves Part 1: P
38、ressure tests, test procedures and acceptance criteria Mandatory requirements. EN 12952-2, Water-tube boilers and auxiliary installations Part 2: Materials for pressure parts of boilers and accessories. EN 12952-3:2001, Water-tube boilers and auxiliary installations Part 3: Design and calculation fo
39、r pressure parts. EN 12952-5, Water-tube boilers and auxiliary installations Part 5: Workmanship and construction of pressure parts of the boiler. EN 13445-1:2002, Unfired pressure vessels Part 1: General. EN 13445-2, Unfired pressure vessels Part 2: Materials. EN 13445-3, Unfired pressure vessels P
40、art 3: Design. EN 13445-4, Unfired pressure vessels Part 4: Fabrication. EN 13445-5, Unfired pressure vessels Part 5: Inspection and testing. EN 13480-3, Metallic industrial piping Part 3: Design and calculation. EN 20898-2, Mechanical properties of fasteners Part 2: Nuts with specified proof load v
41、alues Coarse thread (ISO 898-2:1992). prEN 50156-1, Electrical equipment for furnaces and ancillary equipment Part 1: Requirements for application design and installation. EN 60079-10, Electrical apparatus for explosive gas atmospheres Part 10: Classification of hazardous areas (IEC 60079-10:2002).
42、EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs (ISO 898-1:1999). EN ISO 5817, Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2003).
43、EN 12952-14:2004 (E) 6 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 764:1994 and EN 13445-1:2002 and the following apply. 3.1 liquefied pressurized ammonia ammonia under a pressure of 10 bar to 15 bar, waterfree, flammable and with a boili
44、ng point of 33C 3.2 liquid ammonia solution of water, with more the 10 % up to a maximum of 33 % ammonia (used between 15 % and 25 %), flam- mable, boiling point 37 C 4 Installations for the storage of liquefied pressurized ammonia 4.1 Plant design Stress corrosion is a hazard associated with the st
45、orage of liquid ammonia. lf required, protection against external mechanical and thermal effects shall be provided which shall be suitable for the required installation site. NOTE This may include requirements for irrigation and fire protection systems, see relevant national law in the country of in
46、stallation. 4.2 Materials 4.2.1 Liquefied pressurized ammonia storage vessel 4.2.1.1 The requirements for materials give in EN 13445-2 shall apply. 4.2.1.2 Plates shall be of fine-grained steels of the basic series or low temperature series in accordance with EN 10028-3 up to a minimum value of yiel
47、d stress at room temperature of 355 N/mm 2 . Limit values for chemical composition and for the measured yield stress at room temperature shall be in accordance with the requirements of 4.2.1.7. 4.2.1.3 Seamless tubes shall be of either: a) fine-grained steels of the basic series or low temperature s
48、eries in accordance with EN 10216-3 up to a mini- mum value of yield stress at room temperature of 355 N/mm 2 . Limit values for chemical composition and for the measured yield stress at room temperature shall be in accordance with the requirements of 4.2.1.7 or; b) P195 test category 2 and P235 test category 2 in accordance with EN 10216-2. 4.2.1.4 Flanges shall be made from S235JRG2 or S235J2G3
