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GB 16780-2021

GB

NATIONAL STANDARD OF THE

PEOPLE’S REPUBLIC OF CHINA

ICS 27.010

CCS F 01

Replacing GB 16780-2012

The norm of energy consumption per unit product of

cement

ISSUED ON: OCTOBER 11, 2021

IMPLEMENTED ON: NOVEMBER 01, 2022

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 consumption norm grade ... 6

5 Technical requirements ... 6

6 Statistical range and calculation method ... 8

The norm of energy consumption per unit product of

cement

1 Scope

This document specifies the norm grade, technical requirements, statistical

scope and calculation method of energy consumption per unit product of

cement (hereinafter referred to as energy consumption).

This document applies to the calculation and assessment of energy

consumption of energy consumption units of manufacturing enterprises of

common portland cement, as well as the energy consumption control of newly-

built, rebuilt and expanded projects.

2 Normative references

The contents of the following documents constitute the indispensable clauses

of this document through normative references in the text. For dated references,

only the version corresponding to that date is applicable to this document; for

undated references, the latest version (including all amendments) is applicable

to this document.

GB 175, Common Portland Cements

GB/T 213, Determination of calorific value of coal

GB/T 384, Determination of calorific value of petroleum products

GB/T 2589, General principles for calculation of the comprehensive energy

consumption

GB/T 12723, General principles for establishing allowance of energy

consumption per unit throughput

GB 17167, General principle for equipping and managing of the measuring

instrument of energy in organization of energy using

GB/T 21372, Portland cement clinker

GB/T 27977, Test and calculation methods of electricity efficiency of cement

production

GB/T 30727, Determination of calorific value in solid biofuels

GB/T 33652, Technical regulation of energy consumption test for cement

manufacturing

GB/T 35461, Specification for equipping and managing of the measuring

instrument of energy in the cement production enterprise

3 Terms and definitions

Terms and definitions determined by GB 175, GB/T 2589, GB/T 12723, GB/T

21372, and the following ones are applicable to this document.

3.1

Energy consumption per unit product of clinker

During the period of statistical report, the various energy consumed by energy

consumption units in the production of cement clinker, which is equivalent to

the energy consumed by 1 t of cement clinker.

3.2

Energy consumption per unit product of cement

During the period of statistical report, the various energy consumed by energy

consumption units in the production of cement, which is equivalent to the energy

consumed by 1 t of cement.

3.3

Fuel consumption per unit product of clinker

During the period of statistical report, the fuel quantity such as coal and diesel

consumed by energy consumption units in the production of cement clinker,

which is equivalent to the standard coal quantity consumed by 1 t of cement

clinker.

3.4

Electricity consumption per unit product of clinker

During the period of statistical report, the electricity consumed by energy

consumption units in the production of cement clinker, which is equivalent to

the electricity consumed by 1 t of cement clinker.

3.5

Electricity consumption per unit product of cement

6 Statistical range and calculation method

6.1 Statistical range

6.1.1 Statistical range of energy consumption per unit product of clinker

Within the scope of energy consumption management of cement clinker

product manufacturing enterprises, various energy sources consumed in the

main production process and auxiliary production process from the entry of raw

fuel into the production plant to the output of cement clinker, excluding the

energy consumed during the project construction period like infrastructure,

technological transformation. If co-processing or alternative fuels are used, the

amount of energy consumed and the amount of alternative fuels shall be

counted separately. When the waste gas from the burning system is used for

power generation in a waste heat power station, the power generation of the

waste heat power station and the self-consumption power of the waste heat

power station shall be counted. The calorific value of solid fuel shall be

determined in accordance with the requirements of GB/T 213 and GB/T 30727;

the calorific value of liquid fuel shall be determined in accordance with the

requirements of GB/T 384. The statistics of electricity consumption shall meet

the requirements of GB/T 27977.

6.1.2 Statistical range of energy consumption per unit product of cement

Within the scope of energy consumption management of cement product

manufacturing enterprises, various energy sources consumed in the main

production process and auxiliary production process from the entry of raw fuel

into the production plant to the delivery of cement products, excluding the

energy consumed during the project construction period like infrastructure,

technological transformation. If co-processing or alternative fuels are used, the

amount of energy consumed and the amount of alternative fuels shall be

counted separately. When the waste gas from the burning system is used for

power generation in a waste heat power station, the power generation of the

waste heat power station and the self-consumption power of the waste heat

power station shall be counted. The calorific value of solid fuel shall be

determined in accordance with the requirements of GB/T 213 and GB/T 30727;

the calorific value of liquid fuel shall be determined in accordance with the

requirements of GB/T 384. The statistics of power consumption shall meet the

requirements of GB/T 27977.

6.1.3 Statistical range of electricity consumption of the cement

preparation section

Within the scope of energy consumption management of cement product

manufacturing enterprises, the electricity consumed within the statistical range

Where:

WS – electricity consumption per unit product of cement, in kilowatt-hours per

ton (kWh/t);

PS – the total output of cement products that meets the requirements of GB/T

175 during the period of statistical report, in tons (t);

wS – the total electricity consumption within the statistical range of electricity

consumption of cement products, in kilowatt-hours (kW·h), which is

calculated according to Formula (7):

Where:

wg – the electricity consumption during the cement grinding and packaging

process within the period of statistical report, in kilowatt-hours (kWh);

Pshx – the consumption of clinker for the production of cement within the period

of statistical report, in tons (t);

wm – the electrical energy consumed by the pretreatment of admixture within

the period of statistical report, in kilowatt-hours (kWh);

wfm – the electrical energy consumed by the pretreatment of gypsum within the

period of statistical report, in kilowatt-hours (kWh);

wfz – the auxiliary production electricity consumption that shall be apportioned

within the period of statistical report, in kilowatt-hours (kW·h).

When the enterprise uses all purchased clinker to produce cement, Wsh in

Formula (7) is calculated as zero; when the enterprise purchases part of the

clinker to produce cement, Wsh in Formula (7) shall be the electricity

consumption per unit product of clinker of the enterprise.

6.2.5 Energy consumption per unit product of cement

The energy consumption per unit product of cement shall be calculated

according to Formula (8):

Where:

......

(Above excerpt was released on 2022-01-06, modified on 2022-01-06, translated/reviewed by: Wayne Zheng et al.)

Source: https://www.chinesestandard.net/PDF.aspx/GB16780-2021