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

Method for preparing coal-based composite chelating agent from triethylene tetramine as raw material

A triethylene and chelating agent technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve complex and high manufacturing cost problems, achieve wide application range, simple preparation, good adsorption effect of effect

Inactive Publication Date: 2014-07-23
XIAN UNIV OF SCI & TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the matrix most people choose is to use polymer resin, silica gel particles, nano-metal oxides, etc., and the manufacturing cost is relatively high, and the modification method and condition control are also relatively complicated. Excellent matrix is ​​the hotspot of current research

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 preparing coal-based composite chelating agent from triethylene tetramine as raw material
  • Method for preparing coal-based composite chelating agent from triethylene tetramine as raw material
  • Method for preparing coal-based composite chelating agent from triethylene tetramine as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Now take 10g Shenfu coal powder as the coal powder source, and the method for preparing the coal-based composite chelating agent with triethylenetetramine as the main raw material consists of the following steps:

[0019] (1) Weigh 10 g of raw coal powder with a particle size of 0.075 to 0.113 mm, add it to 100 mL of distilled water, mix well, weigh 0.3 g γ-aminopropyltriethoxysilane and add it to the coal powder solution to make the raw coal powder The mass ratio of γ-aminopropyltriethoxysilane to γ-aminopropyltriethoxysilane is 1:0.03, and the coupling reaction is stirred at 70°C for 3 hours to obtain coupled modified coal powder;

[0020] (2) Measure 7.5g of triethylenetetramine, add it to the coupling modified coal powder in step (1), make the mass ratio of raw coal powder and triethylenetetramine to be 1:0.75, amination reaction at 80°C for 4 hours , to obtain aminated coal powder;

[0021] (3) First add 6g of sodium hydroxide and then 8.8g of carbon disulfide to ...

Embodiment 2

[0023] Now take 10g Shenfu pulverized coal as the pulverized coal source, and the method for preparing the coal-based composite chelating agent taking triethylenetetramine as raw material consists of the following steps:

[0024] (1) Weigh 10 g of raw coal powder with a particle size of 0.075 to 0.113 mm, add it to 100 mL of distilled water, mix well, weigh 0.2 g γ-aminopropyltriethoxysilane and add it to the coal powder solution to make the raw coal powder The mass ratio of γ-aminopropyltriethoxysilane to γ-aminopropyltriethoxysilane is 1:0.02, and the coupling reaction is stirred at 80°C for 2 hours to obtain coupled modified coal powder;

[0025] (2) Measure 5g of triethylenetetramine, add it to the coupling modified coal powder in step (1), make the mass ratio of raw coal powder and triethylenetetramine be 1:0.5, amination reaction at 75°C for 3 hours, Obtain aminated coal powder;

[0026] (3) First add 5g of sodium hydroxide and then 3.75g of carbon disulfide to the amin...

Embodiment 3

[0028] Now take 10g Shenfu pulverized coal as the pulverized coal source, and the method for preparing the coal-based composite chelating agent taking triethylenetetramine as raw material consists of the following steps:

[0029] (1) Weigh 10g of raw coal powder with a particle size of 0.075-0.113mm, add it to 100mL of distilled water, mix well, weigh 0.5g of γ-aminopropyltriethoxysilane and add it to the coal powder solution to make the raw coal powder The mass ratio of γ-aminopropyltriethoxysilane to γ-aminopropyltriethoxysilane is 1:0.05, and the coupling reaction is stirred at 60°C for 4 hours to obtain coupled modified coal powder;

[0030] (2) Measure 15g of triethylenetetramine, add it to the coupling modified coal powder in step (1), make the mass ratio of raw coal powder and triethylenetetramine to be 1:1.5, amination reaction at 70°C for 4 hours, Obtain aminated coal powder;

[0031] (3) First add 15g of sodium hydroxide and then 15g of carbon disulfide to the amina...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing a coal-based composite chelating agent from triethylene tetramine as a raw material. The method comprises the following steps: adding gamma-aminopropyl triethoxysilane into a raw coal powder solution, and carrying out coupled reaction, so as to obtain coupled modified coal powder; adding the triethylene tetramine into the coupled modified coal powder, and carrying out amination, so as to obtain aminated coal powder; and adding sodium hydroxide and carbon disulfide into the aminated coal powder, and carrying out reaction to obtain the coal-based composite chelating agent. The method has the beneficial effects that by taking coal power particles as matrixes, the preparation process is simple and feasible, and the prepared coal-based composite chelating agent has the characteristics of good adsorption performance of the coal matrixes, excellent physical-chemical stability, easiness in solid-liquid separation, wide application range and the like.

Description

technical field [0001] The invention belongs to the technical field of research on chelating adsorbents used in wastewater pollution treatment, and in particular relates to a preparation method of a coal-based composite chelating agent using triethylenetetramine as a raw material. Background technique [0002] Heavy metal pollution in water is mainly caused by human activities. The reason is the discharge of industrial heavy metal wastewater. In the production of industries such as mining, mineral processing, chemical industry, electroplating, metallurgy, tanning and papermaking, there will be rich mercury (Hg), lead (Pb ), chromium (Cr), cadmium (Cd), nickel (Ni), iron (Fe), zinc (Zn) and other heavy metal wastewater. The commonly used methods of water heavy metal pollution treatment in practice include: precipitation method, ion exchange method, membrane separation technology, extraction method, biological treatment, chelation adsorption method and other means. The chelat...

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): B01J20/22B01J20/30C02F1/28
Inventor 刘转年刘亦平张焕
Owner XIAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com