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GB 37484-2019 (GB37484-2019) PDF English
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GB 37484-2019: PDF in English

GB 37484-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
F 01
Minimum Allowable Values of Energy Efficiency and
Energy Efficiency Grades for Precipitator
ISSUED ON: APRIL 4, 2019
IMPLEMENTED ON: MAY 1, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Terms and Definitions ... 5 
4 Energy Efficiency Grades ... 5 
5 Technical Requirements ... 13 
6 Test Methods ... 14 
Appendix A (normative) Evaluation Methods for Difficulty Level of Dedusting for
Different Coal for Electrostatic Precipitator ... 15 
Minimum Allowable Values of Energy Efficiency and
Energy Efficiency Grades for Precipitator
1 Scope
This Standard stipulates energy efficiency grades, minimum allowable values of
energy efficiency and energy efficiency test methods for precipitator.
This Standard is applicable to dry electrostatic precipitator for coal-fired power plant
boiler flue gas dust removal; bag precipitator for coal-fired boiler flue gas dust removal
in the power industry; bag precipitator for cement new-type dry rotary kiln flue gas dust
removal in the building materials industry; bag precipitator for sintering flue gas semi-
dry desulfurization dust removal in the iron and steel industry; electrostatic-fabric
integrated precipitator for coal-fired power plant boiler and cement new-type dry rotary
kiln flue gas dust removal.
2 Normative References
The following documents are indispensable to the application of this document. In
terms of references with a specified date, only versions with a specified date are
applicable to this document. In terms of references without a specified date, the latest
version (including all the modifications) is applicable to this document.
GB/T 6719 Specifications for Bag House
GB/T 13931 Electrostatic Precipitator - Methods of Performance Tests
GB/T 16845 Dust Collector - Terminology
GB 19153 Minimum Allowable Values of Energy Efficiency and Energy Efficiency
Grades for Displacement Air Compressors
GB/T 27869 Electrostatic-fabric Integrated Precipitator
GB/T 32154 Methods of Performance Tests for Electrostatic-fabric Integrated
Precipitator
DL/T 514 Electrostatic Precipitator
JB/T 5910 Electrostatic Precipitator
JB/T 11267 Top Electromagnetic Impact Rapping Type ESP
3 Terms and Definitions
What is defined in GB/T 16845, GB/T 6719 and GB/T 27869, and the following terms
and definitions are applicable to this document.
3.1 Specific Power Consumption for Precipitator
Specific power consumption for precipitator refers to the power consumed by
precipitator in the handling of unit working conditions that contain dust and flue gas.
3.2 Minimum Allowable Values of Energy Efficiency for Precipitator
Minimum allowable values of energy efficiency for precipitator refers to the maximum
specific power consumption allowed by precipitator under the stipulated test conditions
and when the performance reaches design requirements.
3.3 Resistance Power Consumption for Precipitator
Resistance power consumption for precipitator refers to the unit time power
consumption that induced draft fan needs to overcome precipitator’s pressure drop.
3.4 Difficulty Level of Dedusting for Different Coal for Electrostatic
Precipitator
Difficulty level of dedusting for different coal for electrostatic precipitator refers to the
difficulty level for electrostatic precipitator to reach the performance indexes under the
given conditions, such as: coal, fly ash and flue gas composition, flue gas temperature
and fly ash particle size. Its evaluation may be divided into “relatively easy”, “general
difficulty” and “relatively difficult”.
3.5 Dust Cleaning Energy for Bag Precipitator
Dust cleaning energy for bag precipitator refers to the unit time energy that bag
precipitator consumes during dust cleaning.
4 Energy Efficiency Grades
4.1 Energy Efficiency Grades for Precipitator
4.1.1 Energy efficiency grades for electrostatic precipitator
4.1.1.1 Energy efficiency grades for electrostatic precipitator shall be divided into 3
grades (as it is shown in Table 1); Grade-1 signifies the highest energy efficiency.
Difficulty level of dedusting for different coal is “general difficulty”. When flue gas dust-
containing concentration at the inlet of electrostatic precipitator is not more than 30
g/m3, the specific power consumption for various grades of electrostatic precipitator
4.2.1 Constitution of precipitator’s main power consumption in unit time
Electrostatic precipitator’s main power consumption in unit time includes: resistance
power consumption for electrostatic precipitator; power consumption of high-voltage
power supply equipment in unit time for electrostatic precipitator; power consumption
of low-voltage electrical equipment in unit time for electrostatic precipitator. Bag
precipitator’s main power consumption in unit time includes: resistance power
consumption for bag precipitator; dust-cleaning power consumption for bag precipitator.
Electrostatic-fabric integrated precipitator’s main power consumption in unit time
includes: resistance power consumption for electrostatic-fabric integrated precipitator;
air compressor system’s power consumption in unit time; power consumption of high-
voltage power supply equipment in unit time; power consumption of insulator heater in
unit time.
4.2.2 Calculation method for specific power consumption for precipitator
Specific power consumption for precipitator shall be calculated in accordance with
Formula (1).
Where,
C---specific power consumption for precipitator, expressed in (kWh/m3);
W---power consumption for precipitator in unit time, expressed in (kWh/h);
Q---working condition flue gas amount that precipitator handles in unit time, expressed
in (m3/h).
4.2.3 Calculation method for main power consumption for precipitator in unit
time
4.2.3.1 Calculation method for main power consumption for electrostatic
precipitator in unit time
Main power consumption for electrostatic precipitator in unit time shall be calculated in
accordance with Formula (2).
Where,
W---electrostatic precipitator’s power consumption in unit time, expressed in (kWh//h);
Wr---electrostatic precipitator’s resistance power consumption, calculated in
Where,
q---air compressor unit’s input specific power, expressed in (kWmin/m3);
L electrostatic-fabric---gas consumption for air compression for electrostatic-fabric integrated
precipitator in unit time, expressed in (m3/min).
NOTE 1: air compressor’s power consumption refers to unit time of power consumption
that is used to generate compressed air for dust-cleaning and overcome air
compressor’s own efficiency.
NOTE 2: air compressor unit’s input specific power shall select the energy-saving
evaluation value in GB 19153.
5 Technical Requirements
5.1 Basic Requirements
5.1.1 The design, manufacture and quality of electrostatic precipitator shall comply with
the stipulations in JB/T 5910, JB/T 11267 or DL/T 514. The design, manufacture and
quality of bag precipitator shall comply with the stipulations in GB/T 6719. The design,
manufacture and quality of electrostatic-fabric integrated precipitator shall comply with
the stipulations in GB/T 27869.
5.1.2 Precipitator’s outlet flue gas dust-containing concentration shall comply with
national and local standards and requirements regarding environmental protection
emission.
5.1.3 In terms of electrostatic precipitator during the operation, performance indexes,
such as pressure drop and air leakage rate, shall comply with the stipulations in JB/T
5910 and JB/T 11267. In terms of bag precipitator during the operation, performance
indexes, such as pressure drop and air leakage rate, shall comply with the stipulations
in GB/T 6719. In terms of electrostatic-fabric integrated precipitator during the
operation, performance indexes, such as pressure drop and air leakage rate, shall
comply with the stipulations in GB/T 27869.
5.2 Minimum Allowable Values of Energy Efficiency for Precipitator
Minimum allowable values of energy efficiency for electrostatic precipitator is Grade-3
of energy efficiency in Table 1. Minimum allowable values of energy efficiency for bag
precipitator is Grade-3 of energy efficiency in Table 2, Table 3 and Table 4. Minimum
allowable values of energy efficiency for electrostatic-fabric integrated precipitator is
Grade-3 of energy efficiency in Table 5 and Table 6.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.