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GB/T 30729-2014: Determination of chlorine in solid biofuels
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| GB/T 30729-2014 | English | 299 |
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Determination of chlorine in solid biofuels
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GB/T 30729-2014
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Basic data | Standard ID | GB/T 30729-2014 (GB/T30729-2014) | | Description (Translated English) | Determination of chlorine in solid biofuels | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D21 | | Classification of International Standard | 75.160.10 | | Word Count Estimation | 13,110 | | Date of Issue | 6/9/2014 | | Date of Implementation | 10/1/2014 | | Quoted Standard | GB/T 21923 | | Regulation (derived from) | National Standards Bulletin No. 11 of 2014 | | 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 Standard specifies the high temperature combustion hydrolysis - potentiometric titration of solid biomass fuel chlorine content summary methods, reagents and materials, equipment, measurement procedure, the results of calculation and precision of the | GB/T 30729-2014: Determination of chlorine in solid biofuels---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.
Determination of chlorine in solid biofuels
ICS 75.160.10
D21
National Standards of People's Republic of China
Determination of solid biomass fuels chlorine
Issued on. 2014-06-09
2014-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
Method summary 3 1
4 Reagents and materials 1
5 Equipment 2
6 Burning hydrolysis Sample 5
6 7 potentiometric titration
8 6 calculated results
9 precision of the method 7
7 10 test reports
Appendix A (normative) differential titration curve drawing 8
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Coal Industry Association.
This standard coal by the National Standardization Technical Committee (SAC/TC42) centralized.
This standard was drafted. CCRI Detection Research Branch.
The main drafters of this standard. History of Ming, Li Ting, Yang Huayu.
Determination of solid biomass fuels chlorine
1 Scope
This standard specifies the high temperature combustion hydrolysis - Determination of solid biomass fuel chlorine content summary methods, reagents and materials for potentiometric titration
Equipment, measurement procedure, the results of calculation and precision of the method and the like.
This standard applies to solid biomass fuel.
2 Normative references
The following documents for the application of this standard is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 21923 Test code for solid biomass fuels
3 Method summary
Solid biomass fuel combustion in the sample mixed gas stream of oxygen and water vapor and hydrolysis, the sample is completely converted to the chloride and chlorine quantitative
Dissolved in water. Silver indicating electrode, a silver - silver chloride as reference electrode, the potential of the standard silver nitrate titration method directly from the condensed liquid chlorine
Child, calculate solid biomass fuel chlorine content in accordance with standard silver nitrate titration solution consumption.
4 Reagents and materials
Unless otherwise indicated in the analysis using only recognized as qualified analytical grade reagents and distilled or deionized water or equivalent purity.
4.1 ethanol. C2H5OH, ρ20 ℃ = 0.79g/mL.
4.2 sulfuric acid solution. (1 23) (V1 V2), the volume of pure class 1 concentrated sulfuric acid was slowly added to 23 volumes of water, and mix.
4.3 Sodium hydroxide solution. 10g/L, the gifted class pure 1g of sodium hydroxide dissolved in 100mL of water.
4.4 saturated potassium nitrate solution. an amount sufficient excellent pure potassium nitrate dissolved in an appropriate amount of water, and continue until no more dissolved potassium nitrate was added, and the solution
There exists a certain amount of solid potassium nitrate.
4.5 sodium chloride standard solution. chloride ion concentration 0.20mg/mL. Weigh accurately beforehand pure class distinctions in the 500 ℃ ~ 600 ℃ for 1h burning
Sodium chloride 0.6596g, dissolved in a little water, and then transferred to 2000mL volumetric flask, dilute to the mark and shake.
4.6 silver nitrate standard solution. c (AgNO3) = 0.01411mol/L. Accurately weighed excellent pure nitric take prebaked at 110 ℃ after 1h
Silver 2.3969g, dissolved in a little water, and then transferred to 1000mL brown volumetric flask, dilute to the mark and shake.
4.7 bromocresol green indicator (10g/L). Weigh 1g bromocresol green dissolved in 100mL of ethanol (95%).
4.8 Oxygen. than 99.5% purity.
4.9 quartz sand. particle size 0.5mm ~ 1.0mm.
4.10 agar. chemically pure.
4.11 porcelain boat. length 77mm, height and width of 10mm, temperature above 1100 ℃.
4.12 high temperature Cotton. Cotton fiber glass or aluminum silicate cotton, temperature above 1100 ℃.
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