GB/T 29721-2023
Commercial coal quality fluidized bed gasification coal (English Version)
- Standard No.
- GB/T 29721-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 29721-2023
- Replace
- GB/T 29721-2013
- Scope
- This document specifies the product quality grade and technical requirements, test methods, inspection rules, labeling, transportation and storage of fluidized bed gasification coal. It is applicable to the raw material coal for fluidized bed gasification in all links such as production, processing, storage, transportation, sales and use.
- Introduction
1. Scope and application of the standard
GB/T 29721—2023 specifies the product quality grade and technical requirements, test methods, inspection rules, and labeling, transportation and storage requirements for fluidized bed gasification coal. It is applicable to fluidized bed gasification raw coal in all links of production, processing, storage, transportation, sales and use.
2. Product quality grade classification
Dimensions Grade A1 Grade A2 Grade A3 Ash content grade (Ad, %) ≤15.00 15.00 30.00 Total sulfur grade (St, d, %) <1.00 1.00 >2.00 3. Comparative analysis of technical requirements
The technical requirements for coal used in fluidized bed gasification cover a number of key indicators, including total moisture content, adhesion index, ash fusibility and softening temperature, and coal reactivity to CO?. By comparing the tables, we can see that:
Item Quality requirements Total moisture (M, %) ≤40.0 Adhesion index (GR.I) ≤50 Ash fusibility softening temperature (ST, ℃) >1050 4. Interpretation of inspection methods and rules
The standard requires that the inspection of coal for fluidized bed gasification shall be in accordance with GB/T 211, GB/T 212 and other series of standards, including the determination of total moisture, ash, volatile matter, calorific value and other indicators. In addition, type inspection should be carried out under specific conditions, such as new product identification or raw material changes.
Actual case: How a coal plant implements the standard
After adopting the new standard, a lignite production enterprise significantly improved the consistency of product quality by improving the sampling and preparation process. Its ash index was improved from A2 grade to A1 grade, and the total sulfur content was also stabilized at S1 or S2 grade.
5. Implementation suggestions
- The enterprise should establish a complete quality management system to ensure that the coal quality meets the standard requirements.
- Strengthen cooperation with testing institutions and conduct type inspections regularly.
- Select the appropriate coal quality grade according to actual needs to optimize gasification efficiency and cost control.
6. Labeling and storage requirements
The labeling must include information such as product name and quality indicators, and must be made of waterproof material. When storing, it should be protected from dust and rain, and away from fire sources to ensure stable coal quality.
GB/T 29721-2023 Referenced Document
- GB/T 16659 Determination method of mercury in coal*， 2024-04-25 Update
- GB/T 19494.1 Mechanized Coal Sampling Part 1: Sampling Methods*， 2023-11-27 Update
- GB/T 19494.2 Mechanized Coal Sampling Part 2: Preparation of Coal Samples*， 2023-11-27 Update
- GB/T 211 Determination of total moisture in coal
- GB/T 212 Proximate analysis of coal
- GB/T 213 Determination of calorific value of coal
- GB/T 214 Determination of total sulfur in coal
- GB/T 216 Determination of phosphorus in coal
- GB/T 219 Determination of fusibility of coal ash
- GB/T 220 Determination of carboxyreactivity of coal
- GB/T 25209 Commercial coal marking
- GB/T 25214 Determination of total sulfur in coal by IR spectrometry
- GB/T 3058 Determination of arsenic in coal
- GB/T 30732 Proximate analysis of coal.Instrumental method
- GB/T 31087 General technical requirements for impurities control of commercial coal
- GB/T 3558 Determination of chlorine in coal
- GB/T 474 Method for preparation of coal sample
- GB/T 475 Method for manual sampling of commercial coal
- GB/T 5447 Determination of caking index for bituminous coal
- GB/T 5751 Chinese classification of coals
- SN/T 3511 Determination of mercury in minerals.General rules of direct mercury determining with solid injection method
GB/T 29721-2023 history
- 2023 GB/T 29721-2023 Commercial coal quality fluidized bed gasification coal
- 2013 GB/T 29721-2013 Specifications of coal for fluidized bed gasifier