GB29446-2019

The norm of the power consumption of coal washing

选煤电力消耗限额

GB 29446-2019 est une norme nationale chinoise obligatoire en vigueur : The norm of the power consumption of coal washing. Secteur : Construction. Thème principal : Sécurité électrique. Entrée en vigueur : 1 juil. 2020.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

This standard applies to the calculation and assessment of power unit consumption in the coal washing process within the coal industry. It is specifically designed for existing facilities as well as new or expanded enterprises. It is mandatory for all coal preparation plants to comply with these energy consumption norms. The standard covers both coking coal and steam coal washing operations.

Exigences techniques

GB 29446-2019 establishes a tiered system for power consumption limits in coal washing operations. It categorizes the limits into three grades, where Grade 1 represents the lowest energy consumption. The standard distinguishes between coking coal and steam coal preparation enterprises, setting specific norm requirements for each category. For compliance purposes, the standard defines two critical thresholds: the limiting value for existing enterprises and the access value for new or expanded facilities. Existing plants must meet the Grade 3 requirements, while new or expanded plants must achieve the more stringent Grade 2 limits. The standard also introduces a conversion coefficient based on the specific coal washing technology used, such as jigging, heavy media separation, or flotation. This coefficient adjusts the raw power consumption data to provide a normalized evaluation of energy efficiency across different coal preparation processes.

Méthodes d’essai

The evaluation of power consumption involves a specific statistical scope and calculation methodology. The statistical scope begins from the raw coal transportation to the washing plant and ends when the washed products leave the facility. It includes power consumed by washing, machinery repair, lighting, and laboratories, as well as transformer losses. The power unit consumption is calculated by multiplying the total power consumption by the process conversion coefficient, then dividing by the total amount of raw coal processed.

Questions fréquentes

What products or facilities are regulated under GB 29446-2019?

It regulates coal washing plants in the coal industry, covering both coking coal and steam coal preparation facilities.

What are the main changes from the previous GB 29446-2012 version?

The 2019 version adds power consumption limit grades and removes the advanced value. It also modifies the limiting and access values for power unit consumption.

How is the power unit consumption calculated under this standard?

It is calculated by multiplying the total electricity consumption by a process conversion coefficient (detailed in Annex A) and dividing by the total weight of raw coal processed.

The summary above provides a high-level overview of GB 29446-2019. 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 29446-2019 today to access all detailed parameters, tables, and testing procedures.

Indications d’applicabilité

Type: Management
CCS: F10
ICS: 27.010
Autorité compétente: Standardization Administration of China
Comité technique: National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China

Relations

Remplace:GB 29446-2012