GB/T 9143-2021Commercial coal quality—Coal for fixed-bed gasification (English PDF)

4.1 General

Coal for fixed-bed gasification is classified into categories by volatile, classified into different quality grades by ash and total sulfur, and expressed in the form of "category + ash grade + total sulfur grade". At the same time, the requirements for coal ash melting temperature indicator are put forward for coal used in fixed-bed gasification with different slag-off methods.

4.2 Product category

Coal for fixed-bed gasification is divided into 4 categories according to coal type, namely anthracite for fixed-bed gasification, low volatile bituminous coal for fixed-bed gasification, medium-high volatile bituminous coal for fixed-bed gasification, and lignite for fixed-bed gasification; the abbreviated codes are GDQH-WY, GDQH-LVYM, GDQH-MHVYM, GDQH-HM respectively. The determination of the […]

5.2 Total sulfur

The determination of total sulfur of coal shall be carried out in accordance with GB/T 214 or GB/T 25214 and shall be carried out in accordance with the Eschka method in GB/T 214 during the arbitration.

5.3 Undersize fraction of lump coal

The determination of the undersize fraction of lump coal shall be carried out according to MT/T 1.

5.4 Bond Index

The determination of the bond index of coal shall be carried out in accordance with GB/T 5447.

5.5 Total moisture

The determination of the total moisture of coal shall be carried out in accordance with GB/T 211.

5.6 Thermal stability

The thermal stability determination of coal shall be carried out according to GB/T 1573.

5.7 Drop strength

The drop strength measurement of coal shall be carried out in accordance with GB/T 15459.

5.8 Phosphorus content

The determination of phosphorus content in coal shall be carried out in accordance with GB/T 216.

5.9 Chlorine content

The determination of chlorine content in coal shall be carried out in accordance with GB/T 3558.

5.10 Arsenic content

The determination of arsenic content in coal shall be carried out in accordance with GB/T 3058.

5.11 Mercury content

The determination of mercury content in coal shall be carried out in accordance with […]

6.4 Type inspection

6.4.1 Type inspection shall be carried out in the following cases:

a) Appraisal of new product design profile and appraisal of trial-batch production definition;

b) Raw materials, processes, and equipment change during formal production;

c) During formal production, an inspection shall be carried out every half a year or every batch of raw materials changed;

d) Production is resumed after batch production had been interrupted and stopped;

e) The national or local quality supervision and management department proposes type inspection requirements.

6.4.2 Type inspection items shall meet the requirements of Table 4.

6.5 Judgment rules

The quality of coal used for fixed-bed gasification shall be judged according to the provisions in Tables 1~Table 3. When the results of the factory inspection and type inspection meet the requirements, the batch of products shall be judged as qualified.

7.1 Identification

7.1.1 The commercial coal produced and sold shall be marked according to the provisions of GB/T 25209.

7.1.2 The accompanying documents for the circulation of coal marked as commercial shall include but not be limited to the following:

--- Product name;

--- Quantity; […]