GB21342-2025

Norm of energy consumption per unit production of coke

焦炭单位产品能源消耗限额

GB 21342-2025 é uma norma nacional chinesa obrigatória vigente: Norm of energy consumption per unit production of coke. Setor: Construção. Foco: Eficiência energética. Entrada em vigor: 1 de mai. de 2026.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard is applicable to the calculation and assessment of energy consumption per unit production of coke for conventional coke oven production enterprises. It also applies to energy consumption control for new, expanded, or renovated projects. It is mandatory for all relevant coke manufacturers operating within China. The standard specifically targets the coking process and does not cover coal washing or downstream chemical processing facilities.

Requisitos técnicos

The standard establishes energy consumption limit grades (Tier 1, Tier 2, and Tier 3) for coke production, categorized by top-charging and stamp-charging ovens. It defines the limiting values for existing facilities and the access values for new construction projects. Manufacturers must ensure their energy consumption falls below the specified Tier 3 limits to maintain compliance. It introduces a comprehensive correction calculation method for energy consumption limits based on specific operational conditions. These conditions include fuel conditions (e.g., using mixed gas vs. coke oven gas), raw material conditions (e.g., volatile matter and moisture of coal), and process conditions (e.g., wet vs. dry coke quenching). Accurate calculation of these correction values is essential for fair compliance assessment. Additionally, the standard specifies the statistical scope for energy consumption, detailing which auxiliary and environmental facilities are included or excluded from the calculation. It references GB/T 12723 for general principles of unit product energy consumption limits.

Métodos de ensaio

The standard outlines the statistical scope and calculation methods for determining the energy consumption per unit of coke. It provides specific formulas to calculate the total energy input, subtracting recovered energy and chemical products. The standard also includes reference tables for converting various energy sources (e.g., coal, gas, electricity) and energy-consuming working fluids (e.g., water, oxygen) into standard coal equivalents (kgce).

Perguntas frequentes

What products are regulated under GB 21342-2025?

It regulates the energy consumption of coke produced by conventional coke ovens, including both top-charging and stamp-charging methods.

Are there any updates from the previous version of GB 21342?

Yes, the 2025 version updates the energy consumption limit grades, adds correction methods for fuel, raw material, and process conditions, and modifies the statistical scope compared to the 2013 version.

How is the energy consumption limit corrected for different operating conditions?

The standard provides a specific formula and a table of correction values based on factors like fuel type, coal volatile matter, moisture content, quenching method, and oven age.

The summary above provides a high-level overview of GB 21342-2025. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 21342-2025 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Gestão
CCS: F01
ICS: 27.010
Órgão competente: Standardization Administration of China
Comitê técnico: National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China

Relações

Substitui:GB 21342-2013