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NB/T 10737-2021: Calculation method of drying intensity for slime drying system
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Calculation method of drying intensity for slime drying system
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NB/T 10737-2021
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Basic data | Standard ID | NB/T 10737-2021 (NB/T10737-2021) | | Description (Translated English) | Calculation method of drying intensity for slime drying system | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D21 | | Word Count Estimation | 4,413 | | Issuing agency(ies) | National Energy Administration | NB/T 10737-2021: Calculation method of drying intensity for slime drying system---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calculation method of drying intensity for slime drying system
ICS 73.040
CCSD21
People's Republic of China Energy Industry Standard
Calculation method of drying strength of coal slime drying system
Published on 2021-11-16
2022-02-16 Implementation
Released by the National Energy Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
Please note that some content of this document may be patented. Publication of this document
Institutions do not assume responsibility for identifying patents.
This document is proposed by China Coal Industry Association.
This document is under the jurisdiction of the National Coal Standardization Technical Committee (SAC/TC42).
This document is drafted by. Yunnan Zhongyi Dingdong Energy Technology Development Co., Ltd., Coal Science and Technology Research Institute Co., Ltd.
The main drafters of this document. Wang Pengyun, Wang Dongsheng, Wang Xiaobing, Wang Yan, Wang Lianbang, Liang Zihong, Yin Zhaokai, Peng Wengang, Shen Shuaixiang,
Shu Chengfei.
Calculation method of drying strength of coal slime drying system
1 Scope
This document specifies the method for calculating the drying strength of the slime drying system.
This document applies to slime drum drying systems and slime fluidized bed drying systems.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 211 Determination method of total moisture in coal
GB/T 475 Manual method for commercial coal samples
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
dryingintensity
The amount of water evaporated per unit of drying area of the coal slime drying equipment in unit time.
4 Calculation method of drying strength
4.1 Slime drum drying system
The drying strength of the slime drum drying system is calculated according to formula (1).
X=
m0(w0-w1)
St(1-w1)
(1)
where.
X ---Dry strength, in kilograms per square meter hour [kg(H2O)/(m2·h)];
m0---the mass of wet slime, in kilograms (kg);
w0---total moisture of wet slime, expressed in %;
w1---total moisture of dry slime, expressed in %;
S --- Effective drying area of drying equipment, the unit is square meter (m2);
t --- drying time, in hours (h).
4.2 Coal slime fluidized bed drying system
The drying strength of the fluidized bed drying system of coal slime is calculated according to formula (2).
X=
m0w0-■miwi
St
(2)
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