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| GB 29140-2024 | English | 275 |
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Norm of energy consumption per unit production of soda ash
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GB 29140-2024: Norm of energy consumption per unit production of soda ash---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB29140-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
CCS F 01
Replacing GB 29140-2012
Norm of energy consumption per unit production of soda
ash
Issued on: APRIL 29, 2024
Implemented on: MAY 01, 2025
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 Level of allowance value of energy consumption... 5
5 Technical requirements... 6
6 Statistical scope and calculation methods... 6
Annex A (informative) Coal equivalent conversion coefficient of various energy
(reference value)... 10
Annex B (informative) Coal equivalent conversion coefficient of main energy-
consuming medium (calculated by energy equivalent value) (reference value)... 12
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
“Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents”.
This document replaces GB 29140-2012 “The norm of energy consumption per unit
product of soda ash”. Compared with GB 29140-2012, in addition to structural
adjustments and editorial changes, the main technical changes are as follows.
a) ADD level of allowance value of energy consumption (see Clause 4 of this
document);
b) DELETE advanced values of energy consumption per unit production of soda ash
production facilities (see 4.3 of the 2012 edition);
c) MODIFY the statistical scope and calculation methods of energy consumption
(see Clause 6 of this document, 5.1 of the 2012 edition);
d) DELETE “Energy-saving technologies and management measures” (see Clause
6 of the 2012 edition).
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority of this document shall not be held
responsible for identifying any or all such patent rights.
This document was proposed by and shall be under the jurisdiction of National
Standardization Administration.
This document was first issued in 2012, this is the first revision.
Norm of energy consumption per unit production of soda
ash
1 Scope
This document specifies the technical requirements, statistical scope and calculation
methods for the allowance value of energy consumption per unit production of soda ash
(hereinafter referred to as energy consumption).
This document applies to the calculation and assessment of energy consumption of soda
ash products (including light soda ash and heavy soda ash) of soda ash production
enterprises using the ammonia-soda process, the combined soda process and the natural
soda process, as well as the energy consumption control of new and rebuilt and
expanded projects.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 210 Sodium carbonate for industrial use
GB/T 2589 General rules for calculation of the comprehensive energy consumption
GB/T 3484 The general principles for energy balance of enterprise
GB/T 5462 Industrial salt
GB/T 12723 General principles for establishing allowance of energy consumption
per unit throughput
GB/T 28749 The method of drawing energy balance network diagram for enterprises
GB/T 28751 The method of editing energy balance table for enterprises
GB/T 29116 General principles for calculation of raw material consumption in
industrial enterprises
carbonate and sodium bicarbonate as raw materials.
b The classification of industrial salt is defined in accordance with GB/T 5462.
c According to different raw materials, combined soda process is divided into refined industrial salt as
raw material and solar industrial salt as raw material. The level of comprehensive energy
consumption for per ton of soda ash of the combined soda process production enterprise using solar
industrial salt as raw material is divided according to 1.18 times the value of the combined soda
process in the table.
5 Technical requirements
5.1 Limit value of energy consumption per unit production of soda ash
Limit value of energy consumption per unit production of light soda ash and heavy soda
ash of existing soda ash production facilities shall comply with the requirements of
level 3 in Table 1.
5.2 Access value of energy consumption per unit production of soda ash
Access value of energy consumption per unit production of light soda ash and heavy
soda ash of new, rebuilt and expanded soda ash production facilities shall comply with
the requirements of level 2 in Table 1.
6 Statistical scope and calculation methods
6.1 Statistical scope of comprehensive energy consumption of soda ash products
6.1.1 The statistical scope of comprehensive energy consumption of soda ash products
includes various energy such as primary energy and secondary energy actually
consumed, including energy used as raw materials. The various energy actually
consumed are calculated in accordance with GB/T 3484, GB/T 28749, GB/T 28751, etc.
6.1.2 The consumption of raw materials for soda ash is calculated in physical quantity,
and the actual consumption is calculated in accordance with GB/T 29116.
6.1.3 The statistical scope covers the energy consumption of all major production
systems, auxiliary production systems and subsidiary production systems from raw
material processing to the storage of soda ash products, including accident losses,
equipment maintenance, start-up and shutdown, and annual overhaul processes. For
natural soda process, it includes the energy consumption of the brine mining process,
excluding the energy consumption of project construction processes such as
infrastructure, technical transformation, and excluding the energy consumption of
calcium chloride, baking soda, synthetic ammonia, ammonium nitrate, ammonium
chloride drying and thermal power production processes affiliated with the soda ash
facilities.
6.1.4 For combined soda enterprises using concentrated gas to make soda, the energy
consumption of the ammonia decarbonization process is counted in that of synthetic
ammonia, and the energy consumption of the low-pressure machine that transports
carbon dioxide to the combined soda enterprises is counted in that of combined soda.
For combined soda enterprises using shift gas to make soda, the energy consumption of
the compressor is counted in that of synthetic ammonia, and the energy consumption of
the booster installed before or after the soda ash carbonization tower is counted in that
of combined soda.
6.1.5 Materials and energy recovered during the production process are not deducted,
and their consumption is not calculated separately when used in this system; when
output to an external system, the output energy shall be counted in the output energy
and deducted from the comprehensive energy consumption (such as vapor, hot water,
etc.).
6.1.6 The energy consumed by the necessary safety and environmental protection
measures in the production of soda ash shall be counted in the energy consumption. For
example. energy consumption for sewage treatment, security, etc.
6.1.7 Raw gas and public works (such as vapor, circulating water, etc.) shared by
multiple users shall be reasonably allocated for various consumptions.
6.1.8 Various energy shall be converted into kilogram coal equivalent in accordance
with GB/T 2589.The calorific value of various energy shall be based on the calorific
value actually measured by the enterprise during the reporting period. If there are no
actual measurement conditions, refer to the reference coal equivalent conversion
coefficient of various energy given in Annex A.
6.1.9 Energy-consuming medium (such as water, oxygen, nitrogen, compressed air, etc.)
used in production, whether purchased or self-produced, shall be counted in the energy
consumption. If it is a self-produced energy-consuming media, the energy consumed
by the production of the energy-consuming media shall be calculated according to the
actual consumption (electricity, vapor, etc.); if it is a purchased energy-consuming
media, the energy input into the system shall be converted according to the measured
value or the reference coal equivalent conversion coefficient of main energy-consuming
medium given in Annex B (if there is no measured value).
6.2 Calculation of soda ash output
During the statistical reporting period, products that meet all the indicators of GB/T 210
after inspection (including re-inspection) by the factory-level quality department are
counted in the soda ash output. If the quality of self-used soda ash products meets the
requirements of GB/T 210, it can be counted in the output, and the product output is
calculated in physical quantity.
6.3 Calculation methods
6.3.1 The comprehensive energy consumption of light soda ash products is calculated
according to formula (1).
where.
Eq - the comprehensive energy consumption of light soda ash products, in kilogram
coal equivalent (kgce);
n - the number of energy varieties consumed within the light soda ash production
boundary;
Ei - the physical quantity of the ith energy consumed in the light soda ash production
process;
ki - the coal equivalent conversion coefficient of the ith energy.
6.3.2 The comprehensive energy consumption for per ton of light soda ash is calculated
according to formula (2).
where.
eq - the comprehensive energy consumption for per ton of light soda ash, in kilogram
coal equivalent per ton (kgce/t);
Eq - the comprehensive energy consumption of light soda ash products, in kilogram
coal equivalent (kgce);
Mq - the output of qualified light soda ash products, in tons (t);
Mo - the amount of light soda ash consumed in the production of heavy soda ash
(including the physical quantity of soda ash converted from the system’s self-
produced alkali liquid), in tons (t).
6.3.3 The comprehensive energy consumption of heavy soda ash products is calculated
according to formula (3).
where.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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