GB29436-2023

Norm of energy consumption per unit production of methanol, ethylene glycol and dimethyl ether

甲醇、乙二醇和二甲醚单位产品能源消耗限额

GB 29436-2023 é uma norma nacional chinesa obrigatória vigente: Norm of energy consumption per unit production of methanol, ethylene glycol and dimethyl ether. Setor: Construção. Foco: Eficiência energética. Entrada em vigor: 1 de dez. de 2024.

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 applies to the calculation, assessment, and energy consumption control of new, existing, and expanded facilities producing methanol, ethylene glycol, and dimethyl ether. Specifically, it covers enterprises using coal, natural gas, or coke oven gas as raw materials for methanol; ethylene, synthesis gas, or coal for ethylene glycol; and methanol for dimethyl ether. It does not apply to construction-phase or residential energy use within the enterprise.

Requisitos técnicos

The standard establishes a three-tier energy consumption limit system for the specified chemical products, where Tier 1 represents the highest efficiency (lowest consumption) and Tier 3 represents the mandatory baseline for existing facilities. For methanol, the limits are differentiated based on raw material types, including bituminous coal, anthracite, lignite, natural gas, and coke oven gas. The standard specifies distinct requirements for continuous pressurized gasification versus atmospheric intermittent fixed-bed gasification technologies. For ethylene glycol, the energy consumption limits are categorized by raw materials: ethylene, synthesis gas, and coal. Notably, the calculation for ethylene and synthesis gas routes excludes the energy content of the raw materials themselves. For dimethyl ether, the standard sets unified limits and explicitly includes the energy content of the raw material methanol in the total energy consumption calculation. New and expanded facilities must meet the stricter Tier 2 requirements, while existing facilities must comply with Tier 3 limits.

Métodos de ensaio

The standard outlines specific statistical boundaries and calculation methodologies rather than traditional laboratory testing. It requires the conversion of all energy sources into standard coal equivalent (kgce) based on measured low calorific values, referencing methods from GB/T 213 and GB/T 11062. The calculation includes energy consumed by production, auxiliary, and附属 production systems, while deducting externally supplied recovered energy. Specific calculation formulas are provided for total comprehensive energy consumption and per-unit product consumption.

Perguntas frequentes

What products are regulated under GB 29436-2023?

GB 29436-2023 regulates the unit product energy consumption of methanol, ethylene glycol, and dimethyl ether. It applies to production facilities using various raw materials, including coal, natural gas, ethylene, synthesis gas, and coke oven gas.

Are there any updates from the previous version of GB 29436-2023?

Yes, this version consolidates and replaces several previous standards, including GB 29436.1-2012, GB 29436.2-2015, GB 29436.3-2015, GB 29436.4-2015, GB 31535-2015, and GB 32048-2015. Key updates include revised energy consumption limit values, the addition of energy consumption limits for coal-based ethylene glycol production, and updated statistical scopes and calculation methods.

How does GB 29436-2023 define the energy consumption limits for new versus existing facilities?

The standard uses a three-tier system. Existing facilities must comply with the Tier 3 limits, which serve as the mandatory baseline. New and expanded facilities must meet the more stringent Tier 2 limits as an access requirement. Tier 1 represents the most advanced and efficient energy consumption level.

The summary above provides a high-level overview of GB 29436-2023. 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 29436-2023 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 29436.1-2012, GB 29436.2-2015, GB 29436.3-2015, GB 29436.4-2015, GB 31535-2015, GB 32048-2015