GB 30251-2024Norm of energy consumption per unit production of refining and chemical industry (English PDF)

3 Terms and definitions

4 Grades of the energy consumption quota

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.

This document replaces GB 30251-2013 The norm of energy consumption per unit product of oil refining, GB 30250-2013 The norm of energy consumption per unit product of ethylene plant, GB 31533-2015 The norm of energy consumption per unit product of purified terephthalic acid, GB 31534-2015 The norm of energy consumption per unit product of p-xylene, GB 31826-2015 The norm of energy consumption per unit product of polypropylene and GB 32053-2015 The norm of energy consumption per unit product of styrene. Compared with GB 30251-2013, GB 30250-2013, GB 31533-2015, GB 31534-2015, GB 31826-2015 and GB 32053-2015, apart from structural adjustments and editorial changes, the main technical changes are as follows:

a) the scope of application of the standard has been changed (see Chapter 1; Chapter 1 of GB 30251-2013, GB 30250-2013, GB 31533-2015, GB 31534-2015, GB 31826-2015 and GB 32053-2015);

b) energy consumption limit grades per unit product have been added (see Chapter 4);

c) the energy consumption limit indicators for oil refining, ethylene, polypropylene, styrene, p-xylene and purified terephthalic acid have been changed, and energy consumption limit indicators for propylene oxide and phthalic anhydride have been added (see Chapter 4; Chapter 4 of GB 30251-2013, GB 30250-2013, GB 31533-2015, GB 31534-2015, GB 31826-2015 and GB 32053-2015);

d) the "advanced value" and the energy consumption limit indicator for diolefins have been deleted (see Chapter 4 of GB 30250-2013);

e) energy-saving management and measures have been deleted (see Chapter 6 of GB 30251-2013, GB 30250-2013, GB 31533-2015, GB 31534-2015, GB 31826-2015 and GB 32053-2015);

f) the reference values of the conversion coefficients of energy and energy-consuming working media to standard oil have been revised (see Annex A), the energy coefficients of refinery process units have been revised (see Annex C), and the energy factors of the storage and transport system, wastewater treatment plant, heat losses, power transmission and transformation losses and other auxiliary systems have been revised (see Annex D);

g) a method for calculating polypropylene output converted to the standard product has been added (see Annex F).

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.

This document was proposed by and is under the jurisdiction of the Standardization Administration of China.

The previous editions of this document and of the documents it replaces are as follows:

- GB 30251-2013 and GB 30250-2013, first published in 2013;

- GB 31533-2015, GB 31534-2015, GB 31826-2015 and GB 32053-2015, first published in 2015;

- this is the first consolidated revision.