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GB 25960-2010: [GB/T 25960-2010] Rules for steam coal blending
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[GB/T 25960-2010] Rules for steam coal blending
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Basic data
| Standard ID | GB 25960-2010 (GB25960-2010) |
| Description (Translated English) | [GB/T 25960-2010] Rules for steam coal blending |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | D20 |
| Classification of International Standard | 73.040 |
| Word Count Estimation | 9,979 |
| Date of Issue | 2011-01-10 |
| Date of Implementation | 2011-06-01 |
| Quoted Standard | GB 474; GB 475; GB/T 5751; GB/T 7562; GB/T 7563; GB/T 15224.1; GB/T 15224.2; GB/T 15224.3; GB/T 18342; GB/T 18666; GB/T 19494.1; GB/T 19494.2 |
| Regulation (derived from) | Announcement of Newly Approved National Standards No. 1 of 2011 (No. 166 overall) |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China |
| Summary | This Chinese standard specifies the quality requirements of raw coal blending, blending blending product solutions and power quality requirements. This standard applies to utility boilers, industrial boilers, industrial furnaces and other products used in coal power production, quality control and sales. This standard does not apply to coal gangue power plant. |
GB 25960-2010: [GB/T 25960-2010] Rules for steam coal blending
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Rules for steam coal blending
ICS 73.040
D20
National Standards of People's Republic of China
Blending power specification
Issued on. 2011-01-10
2011-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
4.2.3,4.2.5,4.3,6.1,6.2 this standard is mandatory, the rest are recommended.
Appendix A of this standard is a normative appendix.
The standard proposed by China Coal Industry Association.
This standard by the National Standardization Technical Committee of Coal.
This standard was drafted. Coal Research Institute Beijing Coal Chemical Research Branch, Shanxi Coal Transportation and Marketing Group Co., Ltd., Beijing Shenhua
Chang Yun blending high-tech Co., Ltd., China University of Mining (Beijing).
The main drafters of this standard. Jiang Ying, Gao Wu, Wang root social, Tu Hua, Jia Ding, Lei Xiaoyu, Chen Yafei, Zhou Bojia.
Introduction
Blending power is defined according to the needs of industrial production, mixing several different quality coal uniformly together to give a new
Coal products to meet all kinds of boilers or furnaces specified requirements. Blending power use help to improve combustion efficiency and reduce pollutants
Emissions, promote the comprehensive utilization of coal resources.
This standard of power coal blending technology development, production status and market demand for trade as the main basis, taking full account of the variety of use
Uses of steam coal blending quality. The development of standards is of great significance for promoting the development of power coal blending technology, improve the management level, can
As steam coal blending quality control and regulate power blending market guidance.
Blending power specification
1 Scope
This standard specifies the quality requirements of raw materials blending power, coal blending and product quality requirements of steam coal blending.
This standard applies to utility boilers, industrial boilers, industrial furnaces, etc. used in production, quality control and sale of steam coal blending product.
This standard does not apply to coal gangue power plant.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB 474 coal sample preparation
GB 475 coal samples of goods taken by artificial methods
GB/T 5751 Chinese coal classification
GB/T 7562 power pulverized coal boiler technology Condition
GB/T 7563 Technical condition of coal for cement rotary kiln
GB/T 15224.1 coal quality - Part 1. Ash
GB/T 15224.2 coal quality - Part 2. sulfur
GB/T 15224.3 coal quality - Part 3. heat
GB/T 18342 Stoker Technical condition of coal
GB/T 18666 commercial coal quality sampling and inspection methods
GB/T 19494.1 coal mechanization sampling - Part 1. Sampling
GB part/T 19494.2 coal mechanization sampling 2. Preparation of coal sample
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Coal coal
coal
Mainly from plant remains through coalification turned into a solid combustible organic carbon-rich sediments, a certain amount of minerals, corresponding
The ash content of less than or equal to 50% (dry mass).
[GB/T 5751-2009, Definition 3.1].
3.2
Coal fuelcoal; steamcoal
To take advantage of the calorific value of coal by burning coal known as thermal coal. Mainly for power generation pulverized coal boilers, industrial boilers and industrial furnaces and the like.
3.3
Steam Coal Blending steamcoalblending
According to the needs of industrial production, according to scientific calculations or blending ratio by the combustion test obtained in which two or more different quality thermal coal
Mixed together or with the additive according to the environmental needs of the production process of a new thermal coal product uniformly.
3.4
Steam coal blending product steamcoalblendingproducts
A mixture of coal products produced according to a certain target depending on the quality of coal.
3.5
Blending ratio coalblendingratio
Various quality coal blending ratio scores.
3.6
Product quality steam coal blending target qualitytargetofsteamcoalblendingproduct
Coal quality index value steam coal blending product to be achieved in order to calorific value of coal, sulfur and volatile into the main reference index.
3.7
Product quality steam coal blending theoretical value qualitycomputationofsteamcoalblendingproduct
By blending various coal quality index value than the calculated power blending products.
3.8
Blending quality Found qualitydeterminationofsteamcoalblendingproduct
The actual measured value of power coal quality blending product.
4 Blending power quality requirements of raw materials
4.1 Dynamic blending raw materials
Dynamic blending raw materials of anthracite, bituminous coal, lignite, coal preparation by-products and ABSORBENTS (or Combustion).
4.2 feedstock for steam coal blending shall comply with the requirements of
4.2.1 Dynamic blending raw coal coal category by GB/T 5751 regulations division, according to the quality of GB/T 15224.1, GB/T 15224.2,
GB/T 15224.3 specified partition.
4.2.2 Different types of coal coal match, volatile (Vdaf) not too much difference. As any two raw coal volatile matter (Vdaf) value
A difference of more than 15.00%, burning test should be conducted in sales should indicate the origin of the raw coal, coal types and blending ratio.
4.2.3 anthracite and lignite should match.
4.2.4 bituminous coal and lignite match in the lignite should be noted sales of blending ratio and volatile (Vdaf) value.
4.2.5 Dynamic blending process equipment should not be added to the corrosive effect of coal substance, such as sodium chloride, nitrate and the like.
4.2.6 Coal Blending To add desulfurization agent in the boiler and furnace design temperature should be greater than the maximum sulfur capture efficiency of 38%.
4.3 is not available as a power blending solid material feedstock.
4.3.1 various gangue.
4.3.2 coke powder. volatile (Vdaf) less than 2.5%.
4.3.3 pollution or damage to the equipment of coal waste and other substances.
5 steam coal blending
5.1 Basic requirements
Blending power production before proceeding to develop a scientific, optimization of steam coal blending.
5.2 steam coal blending main content
5.2.1 Dynamic blending of raw materials, including coal and other raw materials and additives, quality indicators, origin and cost information.
5.2.2 Dynamic blending target, including steam coal blending product quality and cost target.
5.2.3 Dynamic blending ratio calculation and determination
5.2.3.1 When two coals to match, blending ratio calculated based on the target coal and raw coal quality data.
5.2.3.2 When three or more matching coal, coal blending ratio calculated based on the target and other constraints, the specific calculation in Appendix A of the strip.
5.2.3.3 In determining the blending ratio of the main indicators of steam coal blending products (heat and sulfur) and the theoretical value of steam coal blending target should
Have the right amount of room that the heat of steam coal blending product should be higher than the target, while steam coal blending product of sulfur below the target.
5.2.3.4 Dynamic blending product ash fusion temperature of the theoretical value for reference only, the need for laboratory verification.
5.3 Quality Control of Steam Coal Blending
To ensure the stability of product quality steam coal blending, quality control measures should be taken to steam coal blending process, including online or with the detection of coal quality
Sampling and other testing machines.
6 quality steam coal blending product requirements
6.1 Blending power quality products should meet the requirements of the user, wherein.
--- Pulverized coal boiler for the generation of power quality products should meet the blending of GB/T 7562's;
--- For quality Stoker Coal Blend products should comply with GB/T 18342 requirements;
--- Quality steam coal blending for cement rotary kilns products should comply with GB/T 7563 requirements of.
6.2 All power quality should be consistent with the use of blending products to the environmental protection department of the coal quality requirements.
6.3 Dynamic blending the product should be mixed. Coal quality steam coal blending product of the measured value and the relative value of the difference should be less than the target value
10%. Coal quality indicators may include ash (Ad), volatile (Vdaf), heat (Qgr, d) and sulfur (St, d) and the like.
7 quality inspection and acceptance
7.1 GB 475 coal samples press or GB/T 19494.1 provisions taken or prepared according to the provisions of GB 474 GB/T 19494.2 of.
7.2 Special steam coal blending product sales should be accompanied by instructions, special instructions to add the amount of material and the main characteristics of indicators.
7.3 product quality inspection and acceptance by the implementation of the provisions of GB/T 18666 of.
Appendix A
(Normative)
QUALITY theoretical value steam coal blending computing products
QUALITY A.1 to receive theoretical values based blending ratio of steam coal blending computing products
A.1.1 coal quality data as received value, according to the formula (A.1) calculated as follows.
Xar = Xar, 1 × α1 Xar, 2 × α2 Xar, n × αn (A.1)
Where.
Xar --- represents steam coal blending product Aar (%), Var (%), St, ar (%) or Qnet, ar (MJ/kg);
Xar, 1, Xar, 2,, Xar, n --- represents n kinds of raw coal corresponding Aar, 1, Aar, 2,, Aar, n (%), Var, 1, Var, 2,, Var, n (%),
St, ar, 1, St, ar, 2,, St, ar, n (%) or Qnet, ar, 1, Qnet, ar, 2,, Qnet, ar, n (MJ/kg);
α1, α2,, αn --- n kinds of raw coal as received blending mass ratio,%.
A.1.2 dried coal quality data for the base value, according to equation (A.2) calculated as follows.
Xd = Xd, 1 × α1 ×
(100-Mar, 1) Xd, 2 × α2 × (100-Mar, 2) Xd, n × αn × (100-Mar, n)
α1 × (100-Mar, 1) α2 × (100-Mar, 2) αn × (100-Mar, n)
(A.2)
Where.
Xd --- represents steam coal blending product Ad (%), Vd (%), St, d (%) or Qgr, d (MJ/kg);
Xd, 1, Xd, 2,, Xd, n --- represents n kinds of raw coal corresponding Ad, 1, Ad, 2,, Ad, n (%), Vd, 1, Vd, 2,, Vd, n (%),
St, d, 1, St, d, 2,, St, d, n (%) or Qgr, d, 1, Qgr, d, 2,, Qgr, d, n (MJ/kg);
Received Mar, 1, Mar, 2,, Mar, n --- n kinds of raw coal base moisture,%;
α1, α2,, αn --- n kinds of raw coal as received blending mass ratio,%.
A.1.3 coal quality data for the dry ash-free basis volatile time division Vdaf, according to equation (A.3) calculated as follows.
Vdaf = Vdaf, 1 × α1 ×
(100-Mar, 1-Aar, 1) Vdaf, 2 × α2 × (100-Mar, 2-Aar, 2) Vdaf, n × αn × (100-Mar, n-Aar, n)
α1 × (100-Mar, 1-Aar, 1) α2 × (100-Mar, 2-Aar, 2) αn × (100-Mar, n-Aar, n)
(A.3)
Where.
Vdaf --- dried ash-free basis volatile steam coal blending product,%;
Vdaf, 1, Vdaf, 2,, Vdaf, n --- n kinds of dried raw coal ash-free basis volatile,%;
Received Mar, 1, Mar, 2,, Mar, n --- n kinds of raw coal base moisture,%;
Aar, 1, Aar, 2,, Aar, n --- n kinds of raw coal ash as received,%;
α1, α2,, αn --- n kinds of raw coal as received blending mass ratio,%.
A.2 to dry basis blending ratio of the theoretical value of power coal quality blending computing products
A.2.1 coal quality data for the dry base value, according to equation (A.4) calculated as follows.
Xd = Xd, 1 × β1 Xd, 2 × β2 Xd, n × βn (A.4)
Where.
Xd --- represents steam coal blending product Ad (%), Vd (%), St, d (%) or Qgr, d (MJ/kg);
Xd, 1, Xd, 2,, Xd, n --- represents n kinds of raw coal corresponding Ad, 1, Ad, 2,, Ad, n (%), Vd, 1, Vd, 2,, Vd, n (%),
St, d, 1, St, d, 2,, St, d, n (%) or Qgr, d, 1, Qgr, d, 2,, Qgr, d, n (MJ/kg);
β1, β2,, βn --- n kinds of raw coal quality blending dry basis ratio,%.
A.2.2 coal quality data for the dry ash-free basis volatile time division Vdaf, according to equation (A.5) calculated as follows.
Vdaf = Vdaf, 1 × β1 ×
(100-Ad, 1) Vdaf, 2 × β2 × (100-Ad, 2) Vdaf, n × βn × (100-Ad, n)
β1 × (100-Ad, 1) β2 × (100-Ad, 2) βn × (100-Ad, n)
(A.5)
Where.
Vdaf --- dried ash-free basis volatile steam coal blending product,%;
Vdaf, 1, Vdaf, 2,, Vdaf, n --- n kinds of dried raw coal ash-free basis volatile,%;
Ad, 1, Ad, 2,, Ad, n --- n kinds of raw coal ash dry basis,%;
β1, β2,, βn --- n kinds of raw coal quality blending dry basis ratio,%.
Theory A.3 steam coal blending product ash fusion temperature of calculation
Ash fusion temperature of steam coal blending product according to formula (A.6) calculated as follows.
T = T1 × Ad, 1 × β1 T2 × Ad, 2 × β2
Tn × Ad, n × βn
Ad, 1 × β1 Ad, 2 × β2 Ad, n × βn
(A.6)
Where.
Ash fusion temperature T --- steam coal blending products, namely DT, ST, HT, FT, ℃;
T1, T2,, Tn --- n kinds of raw coal and steam coal blending product corresponding to the ash fusion temperature, ℃;
Ad, 1, Ad, 2,, Ad, n --- n kinds of raw coal ash dry basis,%;
β1, β2,, βn --- n kinds of raw coal quality blending dry basis ratio,%.
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