GB29141-2024
Norm of energy consumption per unit production of industrial sulfuric acid，dilute nitric acid and glacial acetic acid
工业硫酸、稀硝酸和冰醋酸单位产品能源消耗限额
GB 29141-2024 is a current mandatory Chinese national standard for Norm of energy consumption per unit production of industrial sulfuric acid，dilute nitric acid and glacial acetic acid. It appears in the Construction compliance cluster with a energy efficiency focus and has an implementation date of Jun 1, 2025.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the calculation, assessment, and energy consumption control of industrial sulfuric acid, dertil nitric acid, and glacial acetic acid production facilities. It is specifically designed for manufacturers in the chemical industry and is mandatory for both existing facilities and new or expanded projects. It does not apply to energy consumption during construction or daily life within the enterprise. The standard replaces the previous versions GB 29141-2012, GB 29437-2012, and GB 29441-2012.
Technical requirements
The standard establishes a three-tier energy consumption limit system for the specified chemical products, where Tier 1 represents the highest energy efficiency and Tier 3 represents the basic requirement. For industrial sulfuric acid, the limits are differentiated by raw materials and production processes, such as sulfur burning, pyrite roasting, and smelter gas processing, including specific requirements for lead-zinc smelting flue gas concentration processes. For dilute nitric acid and glacial acetic acid, the standard sets unified comprehensive energy consumption limits per unit of production (calculated as 100% pure product). Existing facilities must meet the Tier 3 requirements, while new and expanded projects must achieve the more stringent Tier 2 limits. The standard also details the statistical scope of energy consumption, explicitly including energy used by production, auxiliary, and affiliated systems, while excluding energy used for raw material production (e.g., ammonia for nitric acid, methanol/CO for acetic acid) and by-product processing.
Testing methods
Energy consumption is calculated by converting all input and output energy sources into standard coal equivalent (kgce). The calculation involves summing the energy inputs (primary and secondary energy, energy-consuming working fluids) and subtracting the energy outputs. For accurate conversion, the standard provides reference coefficients for various fuels (e.g., coal, natural gas) and steam. It details specific calculation methods for steam enthalpy, including linear interpolation for saturated steam and bilinear interpolation for superheated steam, referencing GB/T 213 and GB/T 11062 for fuel calorific value determination. Manufacturers must use measured calorific values where available; otherwise, the provided reference coefficients must be applied.
FAQs
What products are regulated under GB 29141-2024?
The standard regulates the unit product energy consumption for industrial sulfuric acid, dilute nitric acid, and glacial acetic acid. It sets specific limits based on the production process and raw materials used.
What are the differences between the 2024 version and the previous standards?
GB 29141-2024 merges and replaces GB 29141-2012, GB 29437-2012, and GB 29441-2012. Key updates include revised energy consumption limits, the addition of limits for sulfuric acid produced from lead-zinc smelting and gypsum, and the deletion of limits for acetic acid produced via alcohol oxidation and ethylene methods.
What are the mandatory energy consumption limits for new projects?
New and expanded production facilities must meet the Tier 2 energy consumption access values. Existing facilities are required to comply with the less stringent Tier 3 limits.
The summary above provides a high-level overview of GB 29141-2024. To ensure complete compliance for your chemical production facilities entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 29141-2024 today to access all detailed parameters, energy conversion tables, and calculation formulas.
Applicability hints
- Type
- Management
- CCS
- F01
- ICS
- 27.010
- Competent department
- Standardization Administration of China
- Technical committee
- National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China
Relationships
Replaces:GB 29141-2012, GB 29437-2012, GB 29441-2012