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HJ 76-2017 English PDF

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HJ 76-2017: Specifications and test procedures for continuous emission monitoring system for SO2, NOX and particulate matter in flue gas emitted from stationary sources
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HJ 76: Evolution and historical versions

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HJ 76-2017English1499 Add to Cart 8 days [Need to translate] Specifications and test procedures for continuous emission monitoring system for SO2, NOX and particulate matter in flue gas emitted from stationary sources Valid HJ 76-2017
HJ/T 76-2007English280 Add to Cart 0--9 seconds. Auto-delivery Specification and test procedures for continuous emission monitoring systems of flue gas emitted from stationary sources (on trial) Obsolete HJ/T 76-2007
HJ/T 76-2001EnglishRFQ ASK 9 days [Need to translate] Specifications and test procedures for continuous emission monitoring systems of flue gas emitted from stationary sources Obsolete HJ/T 76-2001

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Standard similar to HJ 76-2017

HJ/T 55   HJ 38   HJ 57   HJ 75   

Basic data

Standard ID HJ 76-2017 (HJ76-2017)
Description (Translated English) Specifications and test procedures for continuous emission monitoring system for SO2, NOX and particulate matter in flue gas emitted from stationary sources
Sector / Industry Environmental Protection Industry Standard
Classification of Chinese Standard Z25
Word Count Estimation 62,690
Date of Issue 2017-12-29
Date of Implementation 2018-03-01
Older Standard (superseded by this standard) HJ/T 76-2007
Regulation (derived from) Ministry of Environmental Protection Notice No. 87 of 2017
Issuing agency(ies) Ministry of Ecology and Environment

HJ 76-2017: Specifications and test procedures for continuous emission monitoring system for SO2, NOX and particulate matter in flue gas emitted from stationary sources


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
People's Republic of China national environmental protection standards Replacing HJ/T 76-2007 Specifications and test procedures for continuous emission monitoring system for SO2, NOX and particulate matter in flue gas emitted from stationary sources 2017-12-29 Posted 2018-03-01 implementation Ministry of Environmental Protection released Directory Foreword ii 1 scope of application .1 2 Normative references .1 3 Terms and definitions .1 4 system components and structure 3 5 technical requirements .5 6 Performance Indicators .7 7 detection method 10 8 Quality Assurance 25 9 test items 27 Appendix A (Normative) CEMS Daily, Monthly and Annual Reports Appendix B (Normative) CEMS data acquisition records and processing requirements Appendix C (informative) particle CEMS related calibration test example .42 Appendix D (Informative) - Determination of SO2, NOx and O2 emissions from stationary sources - Instrumental analysis. Appendix E (informative) CEMS sample transmission line and condensate dehumidification equipment technical requirements 47 Appendix F (Informative) Calculation of equivalent concentration Appendix G (informative) CEMS laboratory testing and on-site testing original record .49

Foreword

In order to implement the Law of the People's Republic of China on Environmental Protection and the Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution, Gas fixed emission sources to monitor pollutant emissions, standardize the fixed source of flue gas emissions (SO2, NOX, particulate matter) continuous monitoring system System performance, quality and testing, the development of this standard. This standard specifies the composition of a continuous monitoring system for emissions of fixed sources of flue gas (SO2, NOX, particulate matter), technology Technical requirements, testing items and testing methods. This standard is "fixed emission sources of continuous emission monitoring system technical requirements and testing methods (Trial)" (HJ/T 76-2007). This standard was first released in.2001 and revised in.2007 for the first time. The original standard was drafted by China Environmental Monitoring Station, Shanghai Environmental Monitoring Center and the State Environmental Protection Administration Information Center. This is the second revision. This repair Set the main content. - Added laboratory testing technical requirements, performance of CEMS gaseous pollutant monitoring unit and particulate monitoring unit Indicators and testing methods; --Revised and perfected CEMS field testing technical requirements, performance indicators and testing methods; - Added testing technical requirements and performance indicators for CEMS key components condenser and heating sampling line. This standard Appendix A, Appendix B is a normative appendix, Appendix C ~ Appendix G is an informative annex. From the date of implementation of this standard, "Technical Requirements and Testing Methods of Continuous Monitoring System for Flue Gas Emission from Stationary Sources (for Trial Implementation)" (HJ/T 76-2007) Repealed. This standard by the Environmental Protection Department of Environmental Monitoring Division and Science and Technology Standards Division to develop. This standard was drafted. China Environmental Monitoring Station, Shanghai Environmental Monitoring Center This standard MEP approved on December 29,.2017. This standard since March 1,.2018 into effect. This standard is interpreted by the MEP. Stationary source of flue gas (SO2, NOX, particulate matter) emission continuous monitoring system Technical requirements and testing methods

1 scope of application

This standard specifies the composition and structure of a continuous monitoring system for the emission of fixed sources of flue gas (SO2, NOX, particulate matter) Technical requirements, performance indicators and testing methods. This standard is applicable to the design, production and testing of a continuous monitoring system for the emission of fixed-source flue gas (SO2, NOX, particulate matter).

2 Normative references

This standard references the following documents or the terms of them. For undated references, the latest version is appropriate Used for this standard. Determination of Particulate Matter and Gaseous Pollutants in Exhaust of Fixed Pollution Sources GB/T 16157 HJ 75 Technical Specifications for Continuous Monitoring of Emission of Flue Gas (SO2, NOx, Particulate Matter) HJ 212 pollution source online automatic monitoring (monitoring) system transmission standard HJ 836 Stationary source emissions - Low concentration particulate matter - Determination of gravimetric method

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 Continuous emission monitoring The emission concentrations and emissions of particulate matter and/or gaseous pollutants emitted by stationary sources are continuously and in real time Automatic monitoring, referred to as CEM. 3.2 Continuous emission monitoring system Continuous monitoring of all equipment required to fix the concentration and emissions of particulate matter and/or gaseous pollutants from sources of pollution, Referred to as CEMS. 3.3 Full scale span (full scale) According to the actual application needs to set the maximum measurement of CEMS. 3.4 Response time Response time includes instrument response time and system response time. Instrument response time refers to the observed value from the analyzer to produce a step increase or step down from the moment to show its value The time interval between the time when 90% or 10% of the nominal value of the standard gas is reached. System response time refers to the time from the moment when the sampling probe of CEMS system accesses the standard gas until the indication value of the analyzer reaches the standard Gas nominal value 90% of the time, the middle of the time interval. Including pipeline transmission time and instrument response time. 3.5 Zero drift zero drift In the instrument is not under the premise of repair, maintenance or adjustment, CEMS access to zero gas after the operation of the prescribed time, The deviation of the instrument reading from the zero gas initial measurement relative to the full scale. 3.6 Spread span drift In the instrument is not under the premise of repair, maintenance or adjustment, CEMS run at the specified time after the pass range calibration gas The percentage of the deviation between the reading of the instrument and the initial value of the span calibration gas relative to full scale. 3.7 Maintenance interval The minimum maintenance interval required by the system to meet HJ 75 technical requirements without any external manual maintenance. 3.8 Nitrogen dioxide conversion efficiency The efficiency of converting NO2 to NO. 3.9 Parallelism Under the same environmental conditions, the same system to measure the same test object, the relative standard deviation of its measurement results. 3.10 ppm parts per million One part per million by volume. 3.11 Reference method Standard method for country or industry release for comparison with CEMS measurement results. 3.12 Dry flue gas concentration Flue gas after pretreatment, dew point temperature ≤ 4 ℃, the concentration of pollutants in flue gas, also known as dry-based concentration. 3.13 Standard state standard state The temperature is 273 K and the pressure is 101.325 kPa. The standard concentration of pollutants are standard state Under the dry flue gas concentration. 3.14 Relative accuracy relative accuracy Using the reference method to measure the concentration of gaseous pollutants in the flue gas simultaneously with CEMS, taking the same time interval and measuring the same state The result of the quantity consists of a number of pairs of data, the sum of the absolute value of the mean of the differences in pairs of data and the absolute value of the confidence coefficient, and the reference method The ratio of the average of the measured data. 3.15 Correlation calibration Simultaneous measurement of particulate matter concentration in flue gas with reference method and CEMS, taking the measurement of the same state during the same time interval To compose a number of pairs of data, calibrate the particulate CEMS with a reference method by establishing a correlation curve between data pairs. Velocity field coefficient The reference method was used to measure the flue gas flow rate synchronously with the CEMS, the average flue gas flow rate measured by the reference method was compared with the same time interval And the ratio of the average flow rate of flue gas measured by CEMS in the same state.

4 system composition and structure

4.1 system components CEMS by the particulate monitoring unit and/or gaseous pollutants SO2 and (or) NOX monitoring unit, smoke parameter monitoring Measuring unit, data acquisition and processing unit (Figure 1). System to measure the concentration of particulate matter in flue gas, gaseous pollutant SO2 And/or NOx concentration, flue gas parameters (temperature, pressure, flow rate or flow rate, humidity, oxygen content, etc.) Gas pollutant discharge rate and emissions, shows (to support printing) and record various data and parameters, the formation of the relevant charts, And through data, graphics and other means transmitted to the management department. 4.2 system structure CEMS system structure includes sample collection and transmission devices, pretreatment equipment, analytical instruments, data acquisition and transmission Lose equipment and other auxiliary equipment. Depending on the CEMS measurement method and principle, CEMS consists of all or part of the above Structure and composition. 4.2.1 Sample collection and transmission device Sample collection and transmission devices include sampling probes, sample transfer lines, flow control equipment and sampling pumps; mining The material of the device and the installation shall not affect the measurement of the instrument. CEMS generally used to extract the measurement methods are equipped with sample collection and Transmission equipment, the specific technical requirements see 5.4.1. 4.2.2 Pretreatment equipment Pretreatment equipment, including sample filtration equipment and dehumidification condensing equipment; pretreatment equipment materials and installation should not be affected Ringer equipment measurement. Part of the CEMS using the extraction measurement method with pretreatment equipment, the specific technical requirements see 5.4.2. 4.2.3 Analysis of equipment Analytical instruments are used to measure and analyze collected samples of flue gas from sources. 4.2.4 data acquisition and transmission equipment Data acquisition and transmission equipment for the acquisition, processing and storage of monitoring data, and according to the central computer instruction transmission monitoring Data and equipment status information; specific technical requirements for data acquisition and transmission equipment see 5.4.5. 4.2.5 Auxiliary equipment CEMS using the extraction measurement method, its auxiliary equipment includes exhaust emissions, purge and purge control Set, diluted zero air pretreatment devices and condensate discharge devices; using direct measurement of CEMS, its auxiliary set Preparation mainly includes gas curtain protection device and standard gas flow equivalent calibration device. The specific technical requirements of various auxiliary equipment see 5.4.3. Fig.1 Schematic diagram of continuous monitoring system of emission of fixed pollution sources (SO2, NOX, particulate matter)

5 technical requirements

5.1 appearance requirements 5.1.1 CEMS should have a product nameplate, nameplate should be marked with the instrument name, model, production unit, serial number, manufacturing Date and other information. 5.1.2 CEMS instrument surface should be intact, no obvious defects, the zero, the components connected to reliable, the operation keys, buttons Flexible, accurate positioning. 5.1.3 CEMS host panel display clear, solid color, character, logo easy to identify, should not affect the reading defects. 5.1.4 CEMS shell or cover should be corrosion-resistant, good sealing performance, dust-proof, rain-proof. 5.2 working conditions CEMS should work properly under the following conditions. a) Indoor ambient temperature. (15 ~ 35) ℃; outdoor ambient temperature (-20 ~ 50) ℃; b) Relative humidity. ≤85%; c) Atmospheric pressure. (80 ~ 106) kPa; d) Supply voltage. AC (220 ± 22) V, (50 ± 1) Hz. Note. Under special environmental conditions such as low temperature and low pressure, the equipment and equipment shall be configured to meet the requirements of local environmental conditions. 5.3 Safety Requirements 5.3.1 Insulation resistance In the ambient temperature (15 ~ 35) ℃, relative humidity ≤ 85%, the system power supply terminal to the ground or chassis insulation Resistance is not less than 20MΩ. 5.3.2 Dielectric strength In the environment temperature (15 ~ 35) ℃, relative humidity ≤ 85% conditions, the system at 1500V (RMS), 50Hz Sine wave test voltage for 1min, there should be no breakdown or flashover phenomenon. 5.3.3 The system should have leakage protection device, with good grounding measures to prevent lightning damage to the system. 5.4 Functional Requirements 5.4.1 Sample collection and transmission device requirements 5.4.1.1 Sample collection device should have heating, insulation and purge function. The heating temperature is generally above 120 ℃, And should be higher than the dew point temperature of flue gas above 10 ℃, the actual temperature value should be able to display the query in the cabinet or system software. 5.4.1.2 sample collection device material should be selected high temperature, corrosion and non-adsorption, does not react with gaseous pollutants Materials, should not affect the normal measurement of pollutants to be tested. 5.4.1.3 Gaseous pollutants Sample collection device should have particulate filter function. The sampling device should be equipped with front or rear end Easy to replace or clean the particulate filter, filter media material should not be adsorbed and does not react with gaseous pollutants, The filter should be able to filter at least (5 to 10) μm particles above the particle size. 5.4.1.4 Sample transfer pipeline should be moderate length. When using the heating pipelines should have a stable, uniform heating and insulation functions; The set heating temperature is generally above 120 ℃, and should be higher than the flue gas dew point temperature above 10 ℃, the actual temperature value should be able to Display the query in the cabinet or system software. 5.4.1.5 Sample transmission pipeline covered gas transmission tube should be at least two, one for the sample gas collection and transmission, The other one is for system-wide calibration of the standard gas; the CEMS sample collection and delivery device should have the functional requirements to complete the CEMS system-wide calibration. 5.4.1.6 The sample transfer line should be made of materials that do not adsorb and react with gaseous contaminants. The technical specifications should be in accordance with Table E.1 in Appendix E technical requirements. 5.4.1.7 The sampling pump should have sufficient suction capacity to overcome the negative pressure of the flue gas and ensure the accurate and reliable sampling flow and relatively stable. 5.4.1.8 Particulate matter CEMS using the extraction measurement method, the extraction sampling device should have the ability to automatically track the change of flue gas flow rate Constant-rate sampling to adjust the sampling flow sampling function, constant speed tracking error should not exceed ± 8%. 5.4.2 Pretreatment equipment requirements 5.4.2.1 CEMS pretreatment equipment and its components should be easy to clean and replace. 5.4.2.2 CEMS dehumidification equipment set temperature should be maintained at about 4 ℃ (equipment outlet flue gas dew point temperature ≤ 4 ℃), Normal fluctuations within ± 2 ℃, the actual temperature values should be able to display the cabinet or system software inquiries. 5.4.2.3 The material of the pretreatment equipment shall be made of materials that do not adsorb and react with gaseous pollutants. The technical specifications of the equipment should be Meets the technical requirements in Table E.2 in Appendix E. 5.4.2.4 Dehumidification equipment dehumidification process condensate generated should be automatically through the condensate collection and discharge devices in a timely manner, Discharge smoothly. 5.4.2.5 To prevent contamination of gaseous pollutants with particulate matter, fine filtration can be provided before the gaseous sample enters the analyzer Filter; filter material should be used not adsorbed and non-reactive with gaseous pollutants, hydrophobic materials, the filter should be at least filtered (0.5 to 2) μm particle size. 5.4.3 Auxiliary equipment requirements 5.4.3.1 CEMS exhaust pipe laying should be standardized, should not be placed to prevent exhaust emissions pollute the surrounding environment. 5.4.3.2 When the outdoor temperature is below 0 ℃, CEMS exhaust pipe should be equipped with heating or heating device to ensure emissions The moisture in the exhaust gas is not condensed or frozen, resulting in blockage of the exhaust pipe and poor exhaust. 5.4.3.3 CEMS shall be equipped with a regular blowback device to periodically blow back other measuring components such as sample collection devices, Avoid clogging due to accumulation of particulate matter. 5.4.3.4 CEMS shall have a reflective or measuring optical lens to prevent the external optical lens from being inserted into the chimney or flue being covered with smoke Air pollution purification system (air curtain protection system); Purification system should be able to overcome the pressure of flue gas to keep the optical lens clean; Purified gas used in the purification system should be properly preconditioned to ensure that it does not affect the measurement results. 5.4.3.5 CEMS with dehumidification and condensation equipment, the condensate generated by dehumidification process should be through the condensate discharge device and When, smooth discharge. 5.4.3.6 CEMS with a dilution sampling system, the dilution of zero air must be equipped with a complete gas pretreatment system, the main Including gas filtration, water removal, oil removal, hydrocarbon removal, and sulfur dioxide and nitrogen oxides removal. 5.4.3.7 CEMS cabinet gas piping and circuit, data transmission lines, etc. should be laid out the standard, the same type of pipeline should be as Can focus on setting; different types of pipelines or different roles, the direction of the pipeline should be clearly identified to distinguish; various Routing should be safe and reasonable, easy to find and maintain. 5.4.3.8 CEMS cabinets should have a good cooling device to ensure that the cabinet temperature in line with the normal working temperature of the instrument; Lighting equipment should be provided for routine maintenance and inspection. 5.4.4 Calibration function requirements 5.4.4.1 CEMS should be capable of zero and span calibration manually and/or automatically. 5.4.4.2 CEMS gaseous pollutants using the extraction of measurement methods, should have a fixed and easy to operate standard gas all System calibration function; that is able to complete the system from the sample acquisition and transmission devices, pretreatment equipment and analytical instruments calibration. 5.4.4.3 CEMS gaseous pollutants using direct measurement, should have a stable and reliable and easy to operate standard gas flow Equivalent calibration function; that is, through the built-in or external calibration pool, to complete the equivalent of the system calibration. Equivalent calibration principle See Appendix F for calibration calculation. 5.4.5 Data Acquisition and Transmission Equipment Requirements 5.4.5.1 Data values beyond its zero point and at least 10% above range should be displayed and recorded. When the measurement exceeds zero When the point is below 10% of range and above, the data record stores its minimum or maximum value. 5.4.5.2 should have the display, set the system time and time tag function, the data for the set time period average. 5.4.5.3 able to display real-time data, with historical data query function, and can report or report output, related See Appendix A for the format requirements of daily report, monthly report and annual report. 5.4.5.4 with digital signal output. 5.4.5.5 with Chinese data acquisition, recording, processing and control software. Data acquisition record processing requirements in Appendix B. 5.4.5.6 The instrument can automatically save the data after it is powered off. After the power is restored, the system can start up automatically, resume operation and normal start working.

6 performance indicators

6.1 Laboratory testing 6.1.1 gaseous pollutants (including O2) monitoring unit 6.1.1.1 Instrument response time (rise time and fall time) Analysis of instrumentation response time. ≤ 120 s. 6.1.1.2 Repeatability Analytical instrument repeatability (relative standard deviation). ≤2%. 6.1.1.3 Linearity error Linearity of analytical instruments. no more than ± 2% of full scale. 6.1.1.4 24h zero drift and range drift Analytical instrument 24h zero drift and range drift. no more than ± 2% of full scale. 6.1.1.5 One-point zero drift and span drift Analytical instrument zero drift and drift per week. no more than ± 3% of full scale. 6.1.1.6 Influence of ambient temperature changes The ambient temperature is within the range of (15-35) ° C. Analyze changes in instrument readings. no more than ± 5% of full scale. 6.1.1.7 Impact of changes in injection flow Changes in injection flow ± 10%, changes in analytical instrument readings. no more than ± 2% of full scale. 6.1.1.8 Supply voltage changes Changes in supply voltage ± 10%, changes in analytical instrument readings. no more than ± 2% of full scale. 6.1.1.9 The influence of interference components Followed by access to Table 1, the corresponding concentration of interference gas components, leading to analysis of instrument readings positive and negative interference changes. Not more than ± 5% of full scale. Table 1 laboratory tests using the interference component gas Gas Type Gas Name Concentration Range Interfere with gas CO 300 mg/m3 CO2 15% CH4 50 mg/m3 NH3 20 mg/m3 HCl.200 mg/m3 6.1.1.10 Effect of vibration Vibration test in accordance with the provisions of the vibration conditions and frequency, analysis of instrument changes in reading. not more than ± 2% of full scale. 6.1.1.11 Nitrogen dioxide conversion efficiency Efficiency of NO2 conversion to NO in NOX analytical instruments or NO2 converters. ≥95%. 6.1.1.12 Parallelism Three sets (sets) of analytical instruments to measure the same standard sample readings relative standard deviation ≤ 5%. 6.1.2 Particulate monitoring unit 6.1.2.1 Repeatability Analytical instrument repeatability (relative standard deviation). ≤2%. 6.1.2.2 24h zero drift and span drift Analytical instrument 24h zero drift and range drift. no more than ± 2% of full scale. 6.1.2.3 One-point zero drift and span drift Analytical instrument zero drift and drift per week. no more than ± 3% of full scale. 6.1.2.4 The impact of changes in ambient temperature Ambient temperature (-20 ~ 50) ℃ range changes, analysis of instrument changes in reading. not more than ± 5% of full scale. 6.1.2.5 Supply voltage changes Changes in supply voltage ± 10%, changes in analytical instrument readings. no more than ± 2% of full scale. 6.1.2.6 Vibration effects Vibration test in accordance with the provisions of the vibration conditions and frequency, analysis of instrument changes in reading. not more than ± 2% of full scale. 6.1.2.7 detection limit Analytical instrument full scale value ≤ 50mg/m3, the detection limit ≤ 1.0mg/m3 (full scale value > 50mg/m3 when not required). 6.2 pollutant discharge on-site testing 6.2.1 gaseous pollutants CEMS (containing O2) 6.2.1.1 indication error a) gaseous pollutants CEMS When the system detects SO2 full scale value ≥100μmol/mol; NOX full scale value ≥200μmol/mol, the indication error. Not more than ± 5% of the standard gas nominal value; When the system detects SO2 full scale value < 100μmol/mol; NOX full scale value < 200μmol/mol, the indication error. Not more than ± 2.5% of full scale. b) O2 CMS Not more ...

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