GB/T 34195-2017 Guides for energy efficiency assessment of sintering process
1 Scope
This standard specifies the terms and definitions, basic principles, assessment procedures, boundaries and scope of energy consumption statistics, benchmark of energy consumption, actual energy consumption, energy efficiency index, energy efficiency analysis, and measures for optimizing energy efficiency of the sintering process.
This standard is applicable to energy efficiency assessment and energy-saving potential analysis of the sintering process in iron and steel enterprises.
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 15316 General principles for monitoring and testing of energy saving
GB 17167 General principle for equipping and managing of the measuring instrument of energy in organization of energy using
GB/T 21368 Specification for equipping and managing of measuring instrument of energy in the iron and steel industry
GB/T 23331 Energy management systems - Requirements
GB/T 28924 Guides for calculating energy efficiency index of an iron and steel enterprise
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 23331 and GB/T 28924 and the following apply.
3.1
modified benchmark of energy consumption
benchmark value of energy consumption per unit product after modifying the benchmark of energy consumption based on the actual and specific conditions of the assessment object
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4 Basic principles
The energy efficiency assessment of the sintering process shall adhere to the following basic principles:
a) Legal compliance: The assessment object shall comply with national laws and regulations of China, the policies for the iron and steel industry, and relevant mandatory standards for energy conservation and emission reduction;
b) Efficient use of energy: Promote the efficient use and rational allocation of energy, encourage enterprises to adopt advanced energy-saving technologies or management measures, and improve production links with low energy efficiency;
c) Stressing the key points: Concentrate on key processes and equipment with high energy consumption and significant energy-saving potential, and analyze the main factors affecting energy efficiency; and
d) Scientific and reasonable approach: Ensure the comparability of the assessment indexes and the reasonableness of the assessment and analysis by eliminating the influence of incomparable factors to the extent permitted by conditions.
5 Assessment procedures
The energy efficiency assessment of the sintering process shall include, but is not limited to, the following procedures:
a) Determine the boundaries and the scope of energy consumption statistics;
b) Collect on-site data of the assessment object and calculate actual energy consumption;
c) Calculate the modified benchmark of energy consumption based on the actual on-site conditions;
d) Calculate the energy efficiency index of the sintering process and assess the energy efficiency grade;
e) Analyze the level of energy usage, the availability of energy measuring instruments, and the potential for energy savings; and
f) Propose measures for optimizing energy efficiency.
6 Boundaries and scope of energy consumption statistics
6.1 Process boundary division
A complete sintering process from the iron containing raw materials entering the batching room, fuel and flux entering the buffer, to the finished sinter being transported to the transfer station in front of the blast furnace chute. The process mainly includes the following links: fuel and flux crushing, batching, first mixing, second mixing, steam preheating, hearth layer laying, material distribution, ignition, sintering, hot crushing, cooling, granulation and screening, sampling, inspection, and testing of finished product, product output, environmental dust removal, flue gas purification, and waste heat recovery.
See Annex A for the benchmark boundary division of the sintering process.
6.2 Scope of energy consumption statistics
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Basic principles
5 Assessment procedures
6 Boundaries and scope of energy consumption statistics
7 Benchmark of energy consumption
8 Actual energy consumption
9 Energy efficiency index
10 Energy efficiency analysis
11 Measures for optimizing energy efficiency
Annex A (Informative) Boundary division of the sintering process
Annex B (Informative) Recommended values for the coefficient of converting energy sources and energy-consumed mediums into standard coal
Bibliography
