Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for measuring arsenic in gas and dust discharged by roasting and burning furnace

A determination method and incinerator technology, which are applied in the preparation of test samples and the measurement of color/spectral properties, etc., can solve problems such as analysis effects, and achieve the effects of simple operation, good popularization and application value, and strong anti-interference.

Inactive Publication Date: 2009-12-30
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires prefabricated specimens and also has an impact on the analysis

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for measuring arsenic in gas and dust discharged by roasting and burning furnace
  • Method for measuring arsenic in gas and dust discharged by roasting and burning furnace
  • Method for measuring arsenic in gas and dust discharged by roasting and burning furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] First, a corundum filter cartridge with a specification of 28mm*100mm (outer diameter*length) and a wall thickness of 1.5mm is used to pre-digest it with mixed acid. Put the corundum filter cartridge in a beaker, add (1+1) 7ml of sulfuric acid, 20ml of nitric acid, and 4ml of perchloric acid, and heat it on an electric plate. After the violent reaction stops, heat it until thick white smoke of perchloric acid is emitted. Take it off and let it cool, rinse the wall of the bottle with water, and then heat until thick white smoke is emitted to drive away the nitric acid. Add a small amount of water and continue to heat and boil. After cooling, take out the corundum filter cartridge, wash it with water several times, dry it and use it to collect gas and dust samples from roasting incinerators.

[0020] After the sample is collected, put the corundum filter cartridge together with the gas dust sample in a beaker, add (1+1) 7ml of sulfuric acid, 20ml of nitric acid, and 4ml o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for measuring arsenic, in particular to a method for measuring arsenic in gas and dust discharged by a roasting and burning furnace. The method comprises: step one, treating a corundum cylinder by mixed acid hydrolysis; step two, collecting the gas and dust discharged by the roasting and burning furnace through the corundum cylinder treated by the step one, transferring the collected gas and dust to a beaker, and treating the gas and dust through digestion by sulfuric acid, nitric acid solution and perchloric acid to form a sample for measuring; step three, sucking the sample obtained by the treatment in the step two into an ICP quartz tube and analyzing the sample, measuring the sample according to an operation method of an ICP spectrometer, and writing down the concentration; and step four, measuring the blank value and standard curve of a blank corundum filter cylinder similarly; and finally calculating the concentration of the arsenic in the gas and dust discharged by the roasting and burning furnace according to the content of the arsenic in the solution. The method can accurately measure the content of the arsenic in the gas and dust discharged by the roasting and burning furnace so as to realize qualified discharge of hazardous waste burning products.

Description

technical field [0001] The invention relates to a method for determining arsenic, in particular to a method for determining arsenic in gas dust discharged from steelworks. Background technique [0002] According to the requirements of the National Hazardous Waste Incineration Pollution Control Standard (GB 18481-2001), iron and steel enterprises need to regularly measure the arsenic in the exhaust gas dust of steelmaking roasting and incinerators every year. "of. However, in practical applications, since the glass fiber filter cartridge contains many components, after acid digestion, the digestion products produced will often seriously affect the analysis of photometry. Therefore, the silver diethylaminodithioformate spectrophotometric method cannot be used to determine the arsenic composition in the gas dust of steel roasting incinerators. However, the determination of arsenic in exhaust gas dust by graphite furnace atomic absorption spectrometry in water quality cannot b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/31G01N1/28
Inventor 蒋文捷董威
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com