DL/T 831-2002 in English

This standard specifies the main criteria and relevant limitation of pulverized coal fired boiler matching with thermal power unit according to coal quality design, firing method selection and furnace characteristic parameters, and proposes several advice for the design of furnace and burner. This standard is applicable to the large capacity unit with rated generation power equal to 300MW~600MW. The pulverized coal fired boiler of thermal power unit with generation powerless than 300MW and larger than 600 MW may refer to this standard.
For the furnace not only firing pulverized-coal, but also other combustible fuels or partially inputting external heat source, this standard shall only be taken as the reference.
This standard has not referred to slag-tap pulverized coal fired boiler.

Foreword I
1 Scope
2 Normative References
3 Terms and Definition
4 Coal Quality Characteristic
5 Selection of Firing Mode
6 Tangential Firing Furnace Selection
7 Wall Firing Furnace Selection
8 Double-arch Firing Furnace Selection
9 Other General Provisions of Furnace Selection Design
10 Parameter Value Selection of Furnace Firing Effect
Annex A (Informative) Test Method for Ignition Temperature (IT) of Pulverized Coal-air Mixture Efflux
Annex B (Informative) Test and Assessment Methods of Pulverized Coal Firing Slagging Characteristic and Burning-out Rate (One Dimension Flame Test Furnace Method)
Annex C (Informative) Examination and Inspection Methods of Coal Quality Analysis Data
Annex D (Informative) Actual Measurement Relation of Ignition Temperature of Pulverized Coal-air Mixture Flow (IT) and Mean Burning-out Rate (Bp) and Volatile Constituent (Vdaf) of One-dimensional Flame Test Furnace
Annex E (Informative) Primary Criterion of Coal Slagging Characteristic
Annex F (Normative) Correction Method of Furnace Characteristic Parameter in Plateau Area