NB/SH/T 0951-2017 in English

VALID

Standard test method for particle size distribution of catalytic crackng catalyst by laser light scattering

Issued on:2017-12-27
Implemented on:2018-06-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $120.00
$117.00

Standard No:	NB/SH/T 0951-2017
Document status:	VALID
Title in English:	Standard test method for particle size distribution of catalytic crackng catalyst by laser light scattering
Title in Chinese:	催化裂化催化剂粒度分布的测定激光散射法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-12-27
Implemented on:	2018-06-01
Professional Classification:	NB-Energy
Related Keywords:	particle size distribution median particle size 1-300μm particle size laser particle size analyzer 0951-2017 particle size range
Related Topics:	catalyst super catalyst catalytic cracking catalyst Photocatalysis is somewhat Catalyst fluorescence FCC Catalyst Standard laser scattering instrument Catalyst Standard Laser Scattering Particle Size Distribution Analyzer sh2017 Laser Particle Size Distribution efficient catalytic conversion optical density optical density photocatalytic Laser Scattering Granularity Laser particle size test+ Laser Particle Size Analyzer Distribution business catalyst photocatalytic night How photocatalytic Cobalt Photocatalytic Oxidation Catalyst particle size analyzer Test Method for Particle Size Distribution of Catalytic Materials by Laser Scattering catalytic voc voc catalyst voc catalyst photocatalytic voc voc catalyst voc photocatalysis voc+photocatalysis voc catalytic meter voc photocatalysis photocatalytic voc business catalyst photocatalyst oxygen Catalyst size Cobalt photocatalysis Laser particle size test Laser Scattering Analyzer Laser Particle Size Analyzer solid photocatalysis standard catalyst Laser particle size analyzer calibration Catalyst Lithium Analysis Method What light is used for photocatalysis How to use laser scattering particle size distribution analyzer cobalt photocatalyst Laser Particle Scattering Analyzer FCC Catalyst Analysis chain body catalysis mononuclear catalyst cobalt photocatalysis Laser Scattering Particle Size Analyzer photocatalyst Laser Particle Distribution laser shot scattering theory Broad Spectrum Photocatalysis How to Test a Catalyst Thorium catalyst Laser Scattering Particle Size Distribution Method mass spectrometry plastic catalyst How to Measure the Stability of a Catalyst laser backscattering electrocatalysis laser particle size scattering base catalyst Light scattering particle size determination method laser particle size photocatalytic effect photocatalyst cobalt nb/sh/t0916 Hydration catalyst "2017sh" Principle of light scattering agent The new catalyst can nb/sh/t+0874 new catalyst Electron catalyst nb/sh and sh Guanidine catalyst photocatalytic enzyme Light Scattering Particle Size Distribution laser particle size, scattering ember catalyst alaser Miscellaneous catalysis particle scattering Kelvin laser particle size "catalyst Laser particle size analyzer scattering diffraction Efficient Catalyst Components Catalytic ability Measuring Particle Size Method Before and after particle size dispersion What is the energy of photocatalysis laser beam Determination of catalyst active sites Catalyst components catalytic oxidation catalyst GB/T29022-2021 Particle size distribution dynamic light scattering method Laser particle size determination method validation Catalyst national testing Catalyst moisture test method Laser Particle Size Analyzer Particle Size Determination Methodology

Introduction

Analysis of the core content of the standard

This standard uses a laser particle size analyzer to determine the particle size distribution of catalytic cracking catalysts. The main technical features include:

Measurement range: 1-300μm particle size (median particle size 60-110μm)
Theoretical model: Combined application of Mie scattering and Fraunhofer diffraction theory
Precision index: Median particle size repeatability ≤2.6μm, reproducibility formula calculation

Comparative analysis of international standards

Comparison dimensions	ASTM D4464-15	NB/SH/T 0951-2017
Particle size range	Not clearly defined	1-300μm
Precision expression	Single index	Four index system (including cumulative volume fraction)
Instrument requirements	General type	Appendix A specifies reference conditions

Key technical points

Optical model selection principles

For particles with a median particle size of less than 20μm, it is mandatory to use the Mie scattering theory and the following must be entered:

The real part of the complex refractive index (such as 1.53 for kaolin)
The imaginary part of the absorption value (usually 0.01 for metal oxides)

Interference control measures

Bubble interference: Visually confirm that there are no bubbles when circulating the dispersant
Contaminant treatment: Pre-clean with a compatible solvent
Agglomeration prevention: Ultrasonic dispersion power control (Appendix A specifies a maximum power of 90%)

Implementation recommendations

Laboratory operating specifications

Sampling strictly follows the NB/SH/T 0960 standard
After the instrument is preheated, it is necessary to perform optical path calibration (refer to JJF 1211)
The background value should be controlled within the manufacturer's requirements

Notes on data reporting

The refractive index parameter used must be indicated
The median particle size should be rounded to one decimal place
Abnormal data should be marked with the measured shading rate (8-18% is recommended)

More samples: DL/T 5154-2012 GB 50021-2001(2009) NB/T 47013.2-2015

Sample only — not a preview of NB/SH/T 0951-2017

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