GB21343-2023
The norm of energy consumption per unit production of calcium carbide, vinyl acetate, polyvinyl alcohol, 1,4-butanediol, dicyandiamide and monocyandiamide
电石、乙酸乙烯酯、聚乙烯醇、1，4-丁二醇、双氰胺和单氰胺单位产品能源消耗限额
GB 21343-2023 is a current mandatory Chinese national standard for The norm of energy consumption per unit production of calcium carbide, vinyl acetate, polyvinyl alcohol, 1,4-butanediol, dicyandiamide and monocyandiamide. It appears in the Construction compliance cluster with a energy efficiency focus and has an implementation date of Dec 1, 2024.
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 energy consumption calculation and assessment for manufacturers of calcium carbide, vinyl acetate, polyvinyl alcohol, 1,4-butanediol, dicyandiamide, and monocyandiamide. It is also applicable for controlling the energy consumption limits of new and renovated or expanded facilities. Manufacturers must ensure their production systems comply with these mandatory limits.
Technical requirements
GB 21343-2023 establishes energy consumption limit grades for the six specified chemical products, categorized into three tiers where Tier 1 represents the highest energy efficiency. The standard mandates that existing production enterprises must comply with the Tier 3 limit requirements, while new and renovation/expansion projects must meet the more stringent Tier 2 limit. Compliance for both existing and new facilities is mandatory. This standard replaces previous versions, including GB 21343-2015 and GB 30528-2014, consolidating multiple product categories into a unified framework. It details the specific statistical scope for comprehensive energy consumption and comprehensive energy consumption per unit product, covering production, auxiliary, and affiliated systems.
Testing methods
The standard outlines specific mathematical formulas for calculating the comprehensive energy consumption (E) and the comprehensive energy consumption per unit product (e). For calcium carbide, it includes a dedicated formula for calculating electric furnace power consumption (E_d), which is adjusted based on the calcium oxide content of the raw materials. The calculations involve converting various energy sources to standard coal equivalents (kgce) using reference coefficients or measured calorific values. Additionally, the standard specifies methods for calculating standardized production yields for calcium carbide and polyvinyl alcohol to ensure accurate unit energy consumption assessments.
FAQs
What products are regulated under GB 21343-2023?
The standard regulates the energy consumption of calcium carbide, vinyl acetate, polyvinyl alcohol, 1,4-butanediol, dicyandiamide, and monocyandiamide.
Are there different requirements for existing versus new facilities?
Yes, existing production enterprises must comply with the Tier 3 energy consumption limits, whereas new and renovated or expanded facilities must comply with the stricter Tier 2 limits. New projects must target Tier 2 compliance.
Does GB 21343-2023 replace any previous standards?
Yes, it replaces GB 21343-2015, GB 30528-2014, GB 30529-2014, and GB 31824-2015, consolidating the energy consumption limits for these products into a single standard.
The summary above provides a high-level overview of GB 21343-2023. 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 21343-2023 today to access all detailed parameters, tables, and calculation procedures.
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 21343-2015, GB 31824-2015, GB 30528-2014, GB 30529-2014