MZ/T 146-2019Specifications for continuous emissions monitoring in the flue gas emitted from funeral places (English PDF)

5.2 Continuous monitoring subsystem of flue gas state parameters

The smoke gas parameter continuous monitoring subsystem includes.

a) Flue gas flow measuring device;

b) Flue gas temperature measuring device;

c) Flue gas humidity measuring device;

d) Flue gas pressure measuring device.

5.3 Particulate matter monitoring subsystem

The particulate monitoring subsystem includes.

a) monitoring probes;

b) Probe cleaning device.

5.4 Gaseous pollutant monitoring subsystem

The gaseous pollutant monitoring subsystem includes.

a) SO2 measuring device;

b) NO measuring device;

c) NO2 measuring device;

d) CO measuring device;

e) HCL measuring device;

f) O2 measuring device.

5.5 Data Acquisition and Processing Subsystem

The data acquisition and processing subsystem includes.

a) data acquisition module;

b) data processing module;

c) data control module;

d) data storage module;

e) document management module;

f) Data transmission interface.

6.1 Ambient conditions

The continuous monitoring system for smoke emission in funeral sites should work normally in the following environments.

a) Ambient temperature. -20 °C ~ 45 °C;

g) Relative humidity. <=90% RH;

h) Atmospheric pressure. 86kPa ~ 106kPa;

i) Flue gas temperature. <=400 °C.

6.2 Appearance

6.2.1 The appearance of the host computer of the monitoring system shall be free from obvious mechanical damage, burrs, bubbles, cracks, deformation, peeling of the coating and corrosion.

6.2.2 The modules of the monitoring system should be connected reliably, without obvious defects on the surface, and the operation keys should be flexible and accurate in positioning.

6.2.3 The scale and numbers of each display part of the monitoring system are clear, and the coloring is firm, and there should be no defects that affect the reading.

6.2.4 The shell or cover of the host of the monitoring system shall be corrosion-resistant, with good sealing performance, dust-proof and rain-proof.

6.3 Power adaptability

When the working voltage of the monitoring system is between AC220V ± 10% and the frequency is between 50Hz ± 10%, the monitoring system should be able to work normally.

6.4 Security

6.4.1 Insulation resistance. at 10 °C ~ 35 °C, relative humidity <=85% RH, monitoring the insulation between the main power supply lead-in wire and the casing of the monitoring system the resistance value should not be less than 20Mohm.

6.4.2 Earth leakage current. The effective value of sinusoidal current is <=0.5mA.

6.4.3 Dielectric strength. The insulation between the power supply part of the host network of the monitoring system and the protective grounding shell should be able to withstand 1500V, 50Hz sine waves the voltage shall be maintained for 1min without breakdown or repeated flashover.

6.4.4 The host of the monitoring system shall have good grounding measures to prevent lightning damage to the instrument.

6.4.5 The main body of the monitoring system is equipped with a leakage protection device to prevent electric shock.

6.5 Data acquisition and processing subsystem

6.5.1 Data storage

The monitoring system should be able to store the original data, and it should be able to send various collected information back to the control center automatically or according to instructions.

6.5.2 Data Acquisition and Control

The system should be able to collect and record the operating status data in real time, diagnose the operating status of the instrument based on the status data, and give it after the measurement data.

Status flag. A warning message should be issued when the system is not operating normally. When the moving average of 1h monitoring data (sliding every 15min) exceeds when the emission standard is issued, the system shall issue a warning message for exceeding the standard.

6.5.3 Document Management

The monitoring system should be able to save and back up data files, and automatically generate operating parameter reports, data reports, and power failure record reports and operation log report.

6.5.4 Interface

The interface of the monitoring system should have an extended function and a modular structure design, and it can realize single or dual or multiple configurations according to the requirements of use.

6.5.5 System Security Management

6.5.5.1 The monitoring system should have security management functions. Operators need to log in to the work ID and password before entering the control interface.

All control operations are automatically recorded and stored in the warehouse.

6.5.5.2 The monitoring system shall have secondary operation management authority.

a) System administrator. can perform all system setting work, such as. setting operator password, operation level, setting system's Device Configuration;

b) General operators. only perform routine maintenance and operations, and cannot change the system settings.

6.5.5.3 The firewall shall meet the requirements of GB 17859.

6.5.6 Automatic recovery of abnormal conditions

When the system is interrupted due to strong external interference or accidental accident or power-on, etc., the system can automatically start.

To resume the running state and record the time when the failure occurred and the time to resume operation.

6.5.7 Data communication

The system should have data communication function, and the communication interface should meet the requirements of RS-485, and support the networking of multiple devices.

6.5.8 Calculation of pollutant concentration and discharge rate

The system should be capable of calculating pollutant concentrations and emission rates.

6.6 Particulate matter monitoring subsystem

6.6.1 Response time. 1s to.200s.

6.6.2 Zero drift. 24h zero drift does not exceed ± 2% of full scale.

6.6.3 Range drift. 24h range drift does not exceed ± 2% of full scale.

6.6.4 Measurement accuracy. When the reference method is used to determine the particulate matter emission concentration.

a) When <=50mg/m³, the absolute error of the average value of the measurement results of the CEMS method and the reference method should not exceed 15mg/m³;

g) When > 50mg/m³, <=100mg/m³, the absolute error of the average value of the measurement results of CEMS method and reference method shall not exceed ± 25%;

h) When > 100mg/m³, <=200mg/m³, the absolute error of the average value of the measurement results of the CEMS method and the reference method shall not exceed ± 20%;

i) When it is >.200 mg/m³, the absolute error of the average value of the measurement results of the CEMS method and the reference method shall not exceed ± 15%.

6.6.5 Purification. The measuring instrument shall have a purification system to prevent the optical lens, the probe inserted into the flue or pipe from being contaminated by smoke;

It can overcome the pressure of the flue gas and keep the optical lens, the flue or the pipe probe clean.

6.7 Gaseous pollutant monitoring subsystem

6.7.1 Measurement range.

a) SO2. 0 ~ 3000 ppm;

b) NO. 0 ~ 3000 ppm;

c) NO2. 0 ~ 3000 ppm;

d) CO. 0 ~ 3000 ppm;

e) HCL. 0 ~ 3000 ppm;

f) O2. 0 ~ 25%.

6.7.2 Response time. <=100s.

6.7.3 Zero drift. 24h zero drift should not exceed ± 2.5% of full scale.

6.7.4 Span drift. 24h span drift should not exceed ± 2.5% of full scale.

6.7.5 Measurement accuracy. should not exceed ± 5% of full scale.

6.7.6 Calibration. The meter should be capable of zero and span calibration using manual or automatic methods.

6.8 Continuous monitoring subsystem of flue gas state parameters

6.8.1 Flue gas flow rate

6.8.1.1 Measurement range. The upper limit of the measurement range shall not be less than 30m/s.

6.8.1.2 Relative error. when the velocity is greater than 10m/s, the relative error should not exceed ± 10%; when the velocity is <=10m/s, the relative error is not should exceed ± 12%.

6.8.1.3 The flow measuring instrument shall have a purification system to prevent the optical lens, the probe inserted into the flue or pipe from being polluted by the flue gas;

The system should be able to overcome the pressure of the flue gas and keep the optical lens, the flue or pipe probe clean.

6.8.2 Flue gas temperature

The temperature deviation should not be greater than ± 3 ° C.

6.8.3 Flue gas humidity

When measured by a humidity sensor, the relative error is <=25%.

6.8.4 Flue gas pressure

6.8.4.1 Measurement range. ±.2000Pa.

6.8.4.2 Relative error. <= ± 10%.

6.9 Configuration of continuous monitoring system for smoke emission in funeral sites

6.9.1 The inlet and outlet of the flue gas purification equipment shall be configured with a continuous monitoring system for flue gas emissions according to the process flow, and shall be capable of cremating each set.

The relevant parameters of the machine's flue gas purification equipment are monitored separately.

6.9.2 When the continuous monitoring system for exhaust gas emission from flue gas purification equipment is also used for supervision by the environmental protection administrative department, its configuration shall meet HJ/T 75-2017 and HJ/T 76-2017 required, and networked as required.

6.9.3 When two or more flue gas purification equipment share the same chimney, the CEMS measurement point should be set on the chimney, and at the exit of each desulfurization device in addition, a continuous monitoring system for flue gas emissions for process control is set up.

6.9.4 The continuous monitoring system for flue gas emission adopts the method in which each analyzer is equipped with a sampling device.

6.10 Measurement point selection and installation requirements

6.10.1 The selection of the measuring point position of the continuous smoke emission monitoring system shall comply with 6.2.2, 6.2.9 and 6.2.10 of the current standard HJ/T 75-2017 the relevant regulations give priority to selecting vertical pipe sections and negative pressure areas of the flue to avoid sharp changes in the elbow and section of the flue.

6.10.2 The specific location of the flue gas continuous monitoring system installed on the chimney shall meet the requirements of the competent authority.

6.10.3 There shall be no water mist or water droplets in the measurement path of the installation location, and there shall be no stratification in the smoke stream.

6.10.4 The measuring point should be selected at a position where the flue gas velocity is greater than 5m/s.

6.10.5 The reference method sampling holes and sampling platforms reserved on the flue shall comply with the requirements of 4.2.2 and 4.2.3 of the current standard GB/T 16157-1996 the relevant provisions. When the sampling platform is set at a high place, there should be a Z-shaped ladder, a spiral ladder or an elevator that leads to the platform.

6.10.6 The inclination of the entire pipeline from the sampling probe of the extraction method to the dehumidifier or the analyzer shall not be less than 5 °.

6.10.7 The continuous smoke emission monitoring system shall have a three-level lightning protection system to prevent lightning strikes.

6.10.8 Instruments and equipment should have leakage protection devices and good grounding measures to ensure personal safety and instrument operation safety.

6.11 Analysis instrument configuration requirements

6.11.1 The analysis instrument room of the continuous smoke emission monitoring system shall be closed, and a temperature adjustment device shall be installed. Keep the indoor temperature at 16 °C ~ at 28 ° C, the average relative humidity should not be greater than 85% RH.

6.11.2 The installation place of the continuous monitoring system for flue gas discharge shall be provided with facilities for automatic discharge of sample gas condensate. Also equipped with air compression the monitoring system of the machine should also have facilities for automatically discharging condensate from the air compressor.

6.11.3 The exhaust gas after testing shall be directly discharged from the analysis instrument room.

6.11.4 An adequate space for operation and heat dissipation shall be reserved in the analysis instrument room.

6.11.5 The analysis instrument room where CEMS is installed shall be provided with secondary access control management.

7.1 Environmental conditions testing

The ambient temperature, relative humidity and atmospheric pressure used by the continuous smoke emission monitoring system are thermometers, hygrometers and empty box pressure gauges Detection.

7.2 Visual inspection

Visual inspection and feel check.

7.3 Power Adaptability Test

Test with variable voltage power supply.

7.4 Safety inspection

The detection of electrical safety requirements of the continuous smoke emission monitoring system shall comply with the corresponding methods and requirements in GB 4793.1.

7.5 Data acquisition and processing subsystem test

7.5.1 Data acquisition and control. Check whether it meets the requirements of 6.5.2 through operation inspection.

7.5.2 Data storage. Check whether it meets the requirements of 6.5.1 through operation inspection.

7.5.3 Document management. Check compliance with the requirements of 6.5.3 through operation inspection.

7.5.4 Interface. check whether it meets the requirements of 6.5.4 through operation inspection.

7.5.5 System safety management. Check whether it meets the requirements of 6.5.5 through operation inspection.

7.5.6 Automatic recovery function for abnormal conditions. check whether the requirements of 6.5.6 are met through operation inspection.

7.5.7 Data communication. Check whether it meets the requirements of 6.5.7 through operation inspection.

7.5.8 Calculation of pollutant concentration and discharge rate. check whether it meets the requirements of 6.5.8 through operation inspection.

7.6 Detection of particulate matter monitoring subsystem

7.6.1 At the beginning of the test period, manually or automatically calibrate the instrument zero and span values, record the initial analog zero and span readings, Determine (manual or automatic) and record the zero and span readings every 24h; then calibrate the zero and span values together, record the zero, span Range value reading; continuous 168h (7 days), calculate the zero point shift and range shift according to formulas (1) to (4).

a) Zero drift calculation.

delta Z = Zi-Z0 (1)

Zd = delta Zmax/R × 100% (2) in the formula.

Z0--initial value of zero reading;

Zi--the i-th zero reading;

Zd--zero drift;

delta Z--Zero drift absolute error;

delta Zmax--the maximum absolute error of zero drift;

R--The full scale value of the instrument.

b) Range drift calculation.

delta S = Si-So (3)

Sd = delta Smax/R × 100% (4) in the formula.

So--the initial value of the range reading;

Si--the i-th range reading;

Sd--range drift;

delta S-- absolute deviation of range value drift;

delta Smax--the maximum value of the absolute error of the range value drift;

R--The full scale value of the instrument.

7.6.2 Purification

Compliance with the requirements of 6.6.5 is checked by inspection.

7.7 Detection of gaseous pollutant monitoring subsystem

4.7.1 Measurement range. the maximum measurable concentration of standard gases such as SO2, NO, NO2, CO, HCL and O2 are passed into the gas path, respectively it can accurately display the corresponding standard value, indicating that each instrument meets the requirements.

4.7.2 Response time. <=100s. Pass in a medium-concentration standard gas and use a stopwatch to measure the displayed value from an instantaneous change to a stable value of 90% time.

4.7.3 Zero point drift. After the instrument is calibrated, pass high purity nitrogen into the gas path every 8h, and record the zero point reading. Repeat this operation 3 times, and then Calculate the zero drift according to the measurement data. The maximum difference between the measurement result and the zero value should not exceed ± 2.5% of full scale.

4.7.4 Span drift. After the instrument is calibrated, pass the standard sample of the maximum measurable concentration of the measured gas into the gas path, and record the measurement every 8h Repeat the operation three times, and then calculate the range drift according to the measurement data. The maximum difference between the measurement result and the range value should not exceed ± 2.5% of full scale.

4.7.5 Measurement accuracy. Pass the standard gas of medium concentration into the gas path, and the relative error between the measured value and the standard concentration is <=5%, indicating that the instrument meets the requirements. At the same time, the relative accuracy should be measured and calculated.

4.7.6 Calibration. The meter should be capable of zero and span calibration using manual or automatic methods.

7.8 Detection of continuous monitoring subsystem of flue gas parameters

7.8.1 Flue gas flow measurement

When the flow meter measures the standard flow gas, the relative error between the displayed value and the standard value is <= ± 10%, indicating that the instrument meets the requirements.

7.8.2 Flue gas temperature measurement

The temperature controller is used to control the temperature of the warm air chamber, and it is measured by a temperature sensor.

The degree sensor meets the requirements.

7.8.3 Flue gas humidity determination

Measure with a hygrometer.

7.8.4 Flue gas pressure

When using a pressure gauge to measure the standard pressure, the relative error between the displayed value and the standard value is <= ± 10%.

8.1 Daily Inspection

8.1.1 Daily inspection items. operation status of sampling system and pretreatment system, working status of flue gas analyzer, operating status of system auxiliary equipment Conditions, system calibration work and other required inspection items and other inspection items specified in the instrument's instruction manual, the operation inspection should be performed once a day.

8.1.2 The daily inspection records include. inspection items, inspection dates, and the running status of the inspected items. Each inspection should be recorded and keep it for at least one year.

8.2 Daily maintenance

8.2.1 Daily maintenance shall be based on the requirements of the equipment manual of the online smoke monitoring system for the maintenance content, maintenance cycle or consumable replacement cycle Make clear that every maintenance situation should be recorded and archived.

8.2.2 Each time a replacement part or material is replaced, the name, specification, quantity, etc. of the replacement part or materia...