HJ 1013-2018Specifications and test procedures for nonmethane hydrocarbons continuous emission monitoring system in stationary sources (English PDF)

4.1 System composition

The stationary pollution source NMHC-CEMS consists of a non-methane

hydrocarbon monitoring unit, a waste gas parameter monitoring unit, a data

collection and processing unit, as shown in Figure 1.The system measures the

concentration of non-methane hydrocarbons in the exhaust gas AND the

exhaust gas parameters (temperature, pressure, flow rate or flow, humidity,

etc.).

4.2 System structure

The NMHC-CEMS's system structure mainly includes sample collection and

transmission devices, pretreatment equipment, analysis instruments, data

collection and transmission equipment, other auxiliary equipment, etc.

Depending on the measurement method and principle of the system, the

system may consist of all or part of the above structure.

4.2.3 Analytical instruments

The analytical instrument is used to measure and analyze the collected waste

gas samples from the pollution source. For specific technical requirements, see

5.4.3.

4.2.4 Data collection and transmission equipment

Data collection and transmission equipment is used to collect, process, store

monitoring data. It can transmit monitoring data and equipment working status

information, according to the commands from central computer. See 5.4.4 for

specific technical requirements.

5.1 Appearance requirements

5.2 Working conditions

NMHC-CEMS shall work normally under the following conditions.

5.3.2 Insulation strength

When the ambient temperature is (15 ~ 35) °C and the relative humidity is <=

85%, the system shall last for 1 min, under 1500 V (effective value), 50 Hz sine

wave test voltage; there shall be no breakdown or arcing.

5.3.3 The system shall have a leakage protection device and good grounding

measures, to prevent damage to the system, which is caused by lightning

strikes.

5.4 Functional requirements

5.4.1 Requirements for sample collection and transmission devices

5.4.1.1 The sample collection and transmission device shall select the materials,

which are resistant to high temperature, corrosion, non-absorptive, non-reactive

with the pollutants under test; meanwhile, it shall not affect the normal

measurement of the pollutants under test.

5.4.1.6 The sampling pump shall have sufficient suction capacity, to overcome

the negative pressure of the flue; ensure that the sampling flow is accurate,

reliable, and relatively stable.

5.4.2 Pretreatment equipment

5.4.2.1 The pretreatment equipment and its components shall be easy to clean

and replace. It shall be made of materials, which do not absorb and do not react

with the pollutants under test.

5.4.2.2 In order to prevent particles from polluting the analyzer, a fine filter can

be set, before the gas sample enters the analyzer. The fine filter shall be able

to filter particles, which have a particle size of (0.5 ~ 2) µm at least.

5.4.3 Requirements of analytical instrument

5.4.4.4 It has a digital signal output function.

5.4.4.5 It has Chinese data collection, recording, processing and control

software. For data collection, recording, processing requirements, see

Appendix B in HJ 76.

5.4.6 Requirements of calibration function

5.4.6.1 The system shall be able to be calibrated manually and/or automatically.

5.4.6.2 For the system, which adopts the extraction measurement method, it

shall have a fixed and easy-to-operate calibration gas full-system calibration

function.

6.1 Laboratory testing

6.1.1 Analysis cycle

System analysis cycle. <= 2 min.

6.1.5 24h drift

6.1.6 The influence of environmental temperature changes

When the ambient temperature changes within the span of (15 ~ 35) °C, the

change of non-methane hydrocarbon's indication value. Not more than ±5% of

full scale.

6.1.10 Response factor

When the system measures non-methane hydrocarbons, the relative mass

response factors of other VOCs, as relative to propane, must meet a certain

span of requirements, as shown in Table 1.

6.2 On-site detection of pollutant discharge

6.2.1 Analysis cycle

System analysis cycle. <= 3 min.

6.2.2 24h drift

6.2.3 Accuracy

When using the reference method to make measurement, the average

concentration of the non-methane hydrocarbon is.

6.2.4 Performance indicators of exhaust gas parameters

The performance indicator requirements of exhaust gas parameters (oxygen,

flow rate, flue gas temperature, humidity) shall meet the relevant requirements

of HJ 76.

7.1 Laboratory testing requirements and methods

7.1.1 General requirements

7.1.1.1 Take at least 3 sets of systems of the same model for simultaneous

testing, at the designated laboratory site.

7.1.1.5 If the test is interrupted due to a system failure, restart the test after the

system returns to normal; the completed test indicators and data will be invalid.

During the test period, the number of system failures per unit (set) is <= 2.

7.1.1.6 For systems with automatic calibration function, it may set any cycle;

the system will perform automatic calibration; during the testing, the automatic

calibration cycle shall be set to >= 24 h.

7.1.2 Standard material requirements

7.1.2.1 Calibration gas. Commercially available certified calibration gas, which

has an uncertainty of <= 2.0%.

7.1.3 Laboratory testing methods

7.1.3.1 Analysis cycle

The analysis cycle time refers to the time interval, between the two sets of

measurement results, which are given, during continuous operation of NMHC-

CEMS. There are 3 measurements in 3 consecutive days. The daily analysis

cycle time shall meet the requirements of Table 3.

7.1.3.3 Repeatability

After the system under test is running stably, lead in the span calibration gas.

Record the measured value, after the displayed value is stable. Repeat the

above operation, at least 6 times, by the use of the span calibration gas of the

same concentration. Calculate the repeatability (relative standard deviation) of

the system under test, according to formula (2). The results shall meet the

requirements of Table 3.

7.2.2 On-site testing methods

7.2.2.1 Analysis cycle

The on-site testing method of the analysis cycle time is consistent with the

laboratory testing method, as shown in 7.1.3.1.The results shall meet the

requirements of Table 4.

7.2.2.2 24h drift

The detection methods of on-site 24h zero drift and span drift are consistent

with the laboratory detection methods, as shown in 7.1.3.5.The results shall

meet the requirements of Table 4.

7.2.2.4 Exhaust gas parameters

Refer to HJ 76, for the detection method of exhaust gas parameters (oxygen,

flow rate, smoke temperature, humidity).

8.1 Installation quality assurance

8.1.1 The installation location and on-site supporting environmental conditions

shall meet the requirements of the HJ 75 standard.

8.2 Testing quality assurance

8.2.1 The on-site testing shall be carried out, under the condition that the

stationary pollution source discharges pollutants normally. During the initial

inspection and re-inspection, a dedicated person must be responsible for

supervising the working conditions AND maintain it relatively stable during the

test.

8.2.4 For complete extraction and dilution extraction systems, when performing

zero and span calibration, in principle, the zero gas and calibration gas must

pass through the same path as the sample gas (such as sample collection

device, transmission pipeline, pretreatment, etc.).

8.3 Daily operation quality assurance

8.3.1 Regular calibration

4.1 System composition

The stationary pollution source NMHC-CEMS consists of a non-methane

hydrocarbon monitoring unit, a waste gas parameter monitoring unit, a data

collection and processing unit, as shown in Figure 1.The system measures the

concentration of non-methane hydrocarbons in the exhaust gas AND the

exhaust gas parameters (temperature, pressure, flow rate or flow, humidity,

etc.).

4.2 System structure

The NMHC-CEMS's system structure mainly includes sample collection and

transmission devices, pretreatment equipment, analysis instruments, data

collection and transmission equipment, other auxiliary equipment, etc.

Depending on the measurement method and principle of the system, the

system may consist of all or part of the above structure.

4.2.3 Analytical instruments

The analytical instrument is used to measure and analyze the collected waste

gas samples from the pollution source. For specific technical requirements, see

5.4.3.

4.2.4 Data collection and transmission equipment

Data collection and transmission equipment is used to collect, process, store

monitoring data. It can transmit monitoring data and equipment working status

information, according to the commands from central computer. See 5.4.4 for

specific technical requirements.

5.1 Appearance requirements

5.2 Working conditions

NMHC-CEMS shall work normally under the following conditions.

5.3.2 Insulation strength

When the ambient temperature is (15 ~ 35) °C and the relative humidity is <=

85%, the system shall last for 1 min, under 1500 V (effective value), 50 Hz sine

wave test voltage; there shall be no breakdown or arcing.

5.3.3 The system shall have a leakage protection device and good grounding

measures, to prevent damage to the system, which is caused by lightning

strikes.

5.4 Functional requirements

5.4.1 Requirements for sample collection and transmission devices

5.4.1.1 The sample collection and transmission device shall select the materials,

which are resistant to high temperature, corrosion, non-absorptive, non-reactive

with the pollutants under test; meanwhile, it shall not affect the normal

measurement of the pollutants under test.

5.4.1.6 The sampling pump shall have sufficient suction capacity, to overcome

the negative pressure of the flue; ensure that the sampling flow is accurate,

reliable, and relatively stable.

5.4.2 Pretreatment equipment

5.4.2.1 The pretreatment equipment and its components shall be easy to clean

and replace. It shall be made of materials, which do not absorb and do not react

with the pollutants under test.

5.4.2.2 In order to prevent particles from polluting the analyzer, a fine filter can

be set, before the gas sample enters the analyzer. The fine filter shall be able

to filter particles, which have a particle size of (0.5 ~ 2) µm at least.

5.4.3 Requirements of analytical instrument

5.4.4.4 It has a digital signal output function.

5.4.4.5 It has Chinese data collection, recording, processing and control

software. For data collection, recording, processing requirements, see

Appendix B in HJ 76.

5.4.6 Requirements of calibration function

5.4.6.1 The system shall be able to be calibrated manually and/or automatically.

5.4.6.2 For the system, which adopts the extraction measurement method, it

shall have a fixed and easy-to-operate calibration gas full-system calibration

function.

6.1 Laboratory testing

6.1.1 Analysis cycle

System analysis cycle. <= 2 min.

6.1.5 24h drift

6.1.6 The influence of environmental temperature changes

When the ambient temperature changes within the span of (15 ~ 35) °C, the

change of non-methane hydrocarbon's indication value. Not more than ±5% of

full scale.

6.1.10 Response factor

When the system measures non-methane hydrocarbons, the relative mass

response factors of other VOCs, as relative to propane, must meet a certain

span of requirements, as shown in Table 1.

6.2 On-site detection of pollutant discharge

6.2.1 Analysis cycle

System analysis cycle. <= 3 min.

6.2.2 24h drift

6.2.3 Accuracy

When using the reference method to make measurement, the average

concentration of the non-methane hydrocarbon is.

6.2.4 Performance indicators of exhaust gas parameters

The performance indicator requirements of exhaust gas parameters (oxygen,

flow rate, flue gas temperature, humidity) shall meet the relevant requirements

of HJ 76.

7.1 Laboratory testing requirements and methods

7.1.1 General requirements

7.1.1.1 Take at least 3 sets of systems of the same model for simultaneous

testing, at the designated laboratory site.

7.1.1.5 If the test is interrupted due to a system failure, restart the test after the

system returns to normal; the completed test indicators and data will be invalid.

During the test period, the number of system failures per unit (set) is <= 2.

7.1.1.6 For systems with automatic calibration function, it may set any cycle;

the system will perform automatic calibration; during the testing, the automatic

calibration cycle shall be set to >= 24 h.

7.1.2 Standard material requirements

7.1.2.1 Calibration gas. Commercially available certified calibration gas, which

has an uncertainty of <= 2.0%.

7.1.3 Laboratory testing methods

7.1.3.1 Analysis cycle

The analysis cycle time refers to the time interval, between the two sets of

measurement results, which are given, during continuous operation of NMHC-

CEMS. There are 3 measurements in 3 consecutive days. The daily analysis

cycle time shall meet the requirements of Table 3.

7.1.3.3 Repeatability

After the system under test is running stably, lead in the span calibration gas.

Record the measured value, after the displayed value is stable. Repeat the

above operation, at least 6 times, by the use of the span calibration gas of the

same concentration. Calculate the repeatability (relative standard deviation) of

the system under test, according to formula (2). The results shall meet the

requirements of Table 3.

7.2.2 On-site testing methods

7.2.2.1 Analysis cycle

The on-site testing method of the analysis cycle time is consistent with the

laboratory testing method, as shown in 7.1.3.1.The results shall meet the

requirements of Table 4.

7.2.2.2 24h drift

The detection methods of on-site 24h zero drift and span drift are consistent

with the laboratory detection methods, as shown in 7.1.3.5.The results shall

meet the requirements of Table 4.

7.2.2.4 Exhaust gas parameters

Refer to HJ 76, for the detection method of exhaust gas parameters (oxygen,

flow rate, smoke temperature, humidity).

8.1 Installation quality assurance

8.1.1 The installation location and on-site supporting environmental conditions

shall meet the requirements of the HJ 75 standard.

8.2 Testing quality assurance

8.2.1 The on-site testing shall be carried out, under the condition that the

stationary pollution source discharges pollutants normally. During the initial

inspection and re-inspection, a dedicated person must be responsible for

supervising the working conditions AND maintain it relatively stable during the

test.

8.2.4 For complete extraction and dilution extraction systems, when performing

zero and span calibration, in principle, the zero gas and calibration gas must

pass through the same path as the sample gas (such as sample collection

device, transmission pipeline, pretreatment, etc.).

8.3 Daily operation quality assurance

8.3.1 Regular calibration