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1、BRITISH STANDARD BS EN 13211:2001 Air quality Stationary source emissions Manual method of determination of the concentration of total mercury The European Standard EN 13211:2001 has the status of a British Standard ICS 13.040.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
2、 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13211:2001 This British Standard, having been prepared under the direction of the Health and Environment Sector Committee, was published under the authority of the Standards Committee an
3、d comes into effect on 15 August 2001 BSI 07-2001 ISBN 0 580 38188 9 National foreword This British Standard is the official English language version of EN 13211:20001. The UK participation in its preparation was entrusted by Technical Committee EH/2/, Air quality, to subcommittee EH/2/1, Stationary
4、 source emissions, 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 publications referred to in this document may be found in the BSI St
5、andards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsibl
6、e for their 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 European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests i
7、nformed; 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 26, an inside back cover and a back cover. The BSI copyright date displayed in this document in
8、dicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13211 January 2001 ICS 13.040.40 Englis
9、h version Air quality - Stationary source emissions - Manual method of determination of the concentration of total mercury Qualit de lair - Emissions de sources fixes - Mthode manuelle de dtermination de la concentration en mercure total Luftqualitt - Emissionen aus stationren Quellen - Manuelles Ve
10、rfahren zur Bestimmung der Gesamtquecksilber-Konzentration This European Standard was approved by CEN on 6 January 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard withou
11、t any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made
12、by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ire
13、land, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any
14、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13211:2001 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 13211:2001 Contents Page Foreword3 1Scope4 2Normative references4 3Terms and definitions.4
15、 4Principle .5 5Sampling equipment.5 6Reagents 10 7Procedure.12 8Expression of results18 9Test report21 Annex A (informative) Examples of isokinetic and non-isokinetic equipment .22 Annex B (informative) Examples of impingers and fritted bubblers24 Annex C (informative) Precleaning procedures of the
16、 sampling equipment (at the laboratory).25 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 13211:2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 264 “Air quality“, the secretariat of which is he
17、ld by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2001, and conflicting national standards shall be withdrawn at the latest by July 2001. According to the CEN/CENELEC Internal Regula
18、tions, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the Un
19、ited Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 13211:2001 1 Scope This European standard specifies a manual reference method for the determination of the mass concentration of mercury in exhaust gases from ducts or c
20、himneys. This European standard is validated for the determination of the mass concentration of total mercury in exhaust gases from the incineration of waste for the concentration range of total mercury from 0,001 mg/m3 to 0,5 mg/m31?. The method may be applicable for exhaust gases from other source
21、s with the following typical composition: total suspended matterfrom 0 mg/m3 to 20 mg/m3 CxHyfrom 0 mg/m3 to 10 mg/m3 HClfrom 0 mg/m3 to 50 mg/m3 HFfrom 0 mg/m3 to 10 mg/m3 SO2from 0 mg/m3 to 250 mg/m3 COfrom 0 mg/m3 to 250 mg/m3 NOxfrom 0 mg/m3 to 500 mg/m3 CO2from 0 % (volume fraction) to 15 % (vo
22、lume fraction) H2O (g)from 2 % (volume fraction) to 25 % (volume fraction) (actual) O2 from 8 % (volume fraction) to 15 % (volume fraction) (dry, actual) temperaturefrom 60 C to 140 C 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publ
23、ications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. 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 revisi
24、on. For undated references the latest edition of the publication referred to applies (including amendments). EN 1483Water quality Determination of mercury. prEN 13284-1:1998Stationary source emissions Determination of low range mass concentrations of dust Part 1: Manual gravimetric method. 3 Terms a
25、nd definitions For the purpose of this European Standard, the following terms and definitions apply: 3.1 mercury mercury and mercury in its compounds 3.2 total mercury sum of the mercury in exhaust gas independent from the state (gaseous, solved in droplets, solid, absorbed on particles) 3.3 represe
26、ntative sampling isokinetic, flow equivalent sampling at the required minimum number of sampling points in the sampling plane as stated in the prEN 13284-1:1998 1? m3 expressed as m3 under dry conditions, normalized to 0 ?C and 101,325 kPa and at 11 % (volume fraction) O 2 (unless otherwise stated).
27、 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 13211:2001 3.4 absorber a device in which gaseous mercury (and mercury attached to small particles that are not filtered) is absorbed into an absorption solution 3.5 gas divider, imp
28、ingers or fritted bubblers a part in the absorber bottle which divides the gas stream in small bubbles into the absorption liquid 4 Principle A sample stream of flue gas is extracted representatively from a duct or chimney over a certain period of time with a controlled flow and known volume. Dust i
29、n the sampled gas stream is collected on a filter whereafter the gas stream is passed through a series of absorbers, which contain an appropriate absorption solution for collecting gaseous mercury. At the end of the sampling period the filter and absorption solution are collected to be taken to the
30、laboratory. The collected dust on the filter is digested in such a way that the mercury contained in the dust fraction is dissolved in a liquid. This liquid is then analyzed. The absorption solution from the absorbers is prepared for analysis and analyzed. The data from the sampling and analysis are
31、 combined and the results are expressed in milligrams of total mercury per cubic meter (mg/m3) of flue gas. The analysis of mercury is performed according to EN 1483. 5 Sampling equipment 5.1 Conditions for isokinetic and non-isokinetic sampling Although mercury is mainly present in the gaseous form
32、, it can also be found in the dust phase as well as in droplets which can be present after wet scrubbers. Therefore isokinetic sampling is necessary in order to collect dust and droplets correctly. When sampling has to be performed isokinetically then both dust and droplets, as well as flue gas, sha
33、ll be sampled in one and the same equipment. This approach is necessary, due to the delicate gaseous/solid/droplet partitioning of mercury. NOTE 1As the total mercury content is to be determined, a shift in the equilibrium within a single sampling system does not influence the measurement of the tot
34、al amount of mercury. If the sum of the mercury content in the dust phase and droplets corresponds to less than 1 ?g/m3, then gaseous mercury can be sampled non-isokinetically. NOTE 2An estimate of the amount of mercury in droplets may be determined on basis of the mercury content in the wet scrubbe
35、r solution and the droplet content in the flue gas. In the case that no droplets are present non-isokinetic sampling can also be performed when the ratio between the highest and lowest velocity at any point in the sampling plane is less or equal to a factor of 1,2. 5.2 General requirements The sampl
36、ing equipment consists of ? a probe with an entry nozzle and a temperature controlled tube; ? a filter housing with a filter support and a filter; Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 13211:2001 ? a series of absorbers;
37、? suction unit(s) with gas metering device(s) and flow regulator(s). The filter housing may be located: ? in the duct or chimney mounted directly behind the entry nozzle (in-stack filtration); ? outside the duct or chimney directly behind the suction tube (out-stack filtration). In the latter case (
38、out-stack filtration) the filter housing shall be temperature controlled. NOTE The filter can also be placed semi-outstack, in the probe after a short piece of gas preheated suction tube. 5.3 Isokinetic sampling equipment Reference is made to prEN 13284-1:1998 for the specific details about the requ
39、irements of the sampling equipment, including the equipment for the determination and maintaining of isokinetic conditions. In this present standard only specific requirements for the sampling of mercury (gaseous, dust and droplets) are stated, additional to those specified in prEN 13284-1:1998. NOT
40、E 1The geometrical dimensions of glass nozzles will deviate from those specified in prEN 13284-1:1998, but the deviations can be decreased so that the remaining differences will not have a significant influence on the result. Depending upon the type of absorbers used (see 5.5) two different sampling
41、 arrangements may be employed; a so- called main-stream arrangement or a side stream arrangement. In the main-stream arrangement all the sampled flue gas is passed through the absorbers, but in the side-stream arrangement only a part of the sampled flue gas is passed through the absorbers. Figures o
42、f both arrangements of the isokinetic sampling equipment for total mercury are given in Annex A. The sampling probe shall be temperature controlled. If an out-stack filter is employed then this shall also be temperature controlled. NOTE 2In cases of wet flue gases containing droplets or saturated fl
43、ue gases it is advised to use out-stack filtration. NOTE 3In the case of the side-stream arrangement the connection to the T-piece and the T-piece itself shall be temperature controlled. Insulation of these parts, without additional heating, is not allowed. NOTE 4The heat input from the sampled gas
44、is insufficient to compensate for the thermal losses even with insulation. The parts of the equipment that are in contact with the sampled flue gas shall be made of specific materials which are prescribed in 5.9. 5.4 Non-isokinetic sampling equipment In general the non-isokinetic sampling equipment
45、is assembled according to the main-stream arrangement. Depending upon the gas flow employed, different types of absorbers (see 5.5) may be used. A figure of the non-isokinetic sampling equipment is given in Annex A. The sampling probe shall be temperature controlled. If an out-stack filter is employ
46、ed then this shall also be temperature controlled. The parts of the equipment that are in contact with the sampled flue gas shall be composed of specific materials which are prescribed in 5.9. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:10:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
47、Page 7 EN 13211:2001 5.5 Absorbers For efficient collection two absorbers shall be placed in series. Downstream of these absorbers an extra empty absorber may be used as a liquid trap and as a protection for the downstream equipment. The amount of mercury collected in the second absorber shall corre
48、spond to less than 5 % of the total amount of mercury in both absorbers or less than 2 ?g/m3, whichever is the greatest. Impingers or fritted bubblers can be used (figures of absorbers are contained in Annex B). NOTE 1Impingers have the advantage that they can be employed under high flow rate condit
49、ions. The disadvantage is the larger amount of (corrosive) absorption solution compared to that employed by fritted bubblers. NOTE 2Typical flow rates for impingers are in the range from 1 m 3/h to 2 m3/h (17l/min to 33 l/min). NOTE 3 This standard is not validated for impingers. NOTE 4The advantage of fritted bubblers is a good absorption efficiency with a smaller amount of absorption solution than that employed by impingers. The disadvantage is that normally only a limited gas flow rate can be used (from about 0,06 m 3/h (1 l/min) to approximately 0,18 m3/