Check patentability & draft patents in minutes with Patsnap Eureka AI!

A kind of modified fly ash adsorbent and preparation method thereof, and adsorption method of trimethylamine

A technology for fly ash and adsorbent, which is applied in separation methods, chemical instruments and methods, and other chemical processes to achieve the effects of increasing adsorption capacity, enhancing stability, and improving load rate and load uniformity.

Active Publication Date: 2022-08-02
WANHUA CHEM GRP CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few patent reports on adsorbents for trimethylamine odor treatment, and it is necessary to develop trimethylamine adsorbents with high adsorption capacity and stable performance

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
  • A kind of modified fly ash adsorbent and preparation method thereof, and adsorption method of trimethylamine
  • A kind of modified fly ash adsorbent and preparation method thereof, and adsorption method of trimethylamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1), grind the collected fly ash into fine powder, after passing through an 80-mesh sieve, leave the fine powder passing through the sieve to wash and dry, get 200g of fine powder, add 120g of bentonite and 224g of distilled water, mix well and then extrude, Then, the pretreated adsorbent was obtained by calcining at 500 °C for 3 h;

[0037] (2), take 200g of pretreated adsorbent, add a total of 400mL of 10wt% hydrogen peroxide solution, sonicate for 2h under 120Hz ultrasonic condition, then take out and dry at 100°C for 4h to obtain hydrogen peroxide modified adsorbent;

[0038] (3), prepare a mixed solution containing ferric nitrate, copper nitrate, cobalt nitrate, nickel nitrate and ammonium fluoride, wherein the mass fractions of Fe, Cu, Co, and Ni are 2wt%, 1.5wt%, 3wt%, 2wt% respectively , the mass fraction of F is 2 wt%, 600 mL of mixed solution was added to 200 g of the adsorbent modified with hydrogen peroxide, sonicated for 3 h under 80 Hz ultrasonic condition...

Embodiment 2

[0041] (1), grind the collected fly ash into fine powder, after passing through a 160-mesh sieve, leave the fine powder passing through the sieve to wash and dry, get 200g of fine powder, add 160g of bentonite and 216g of distilled water, mix well and then extrude, Then, the pretreated adsorbent was obtained by calcining at 550 °C for 4 h;

[0042] (2), take 200g of pretreated adsorbent, add a total of 500mL of 12wt% hydrogen peroxide solution, sonicate for 2.5h under 100Hz ultrasonic conditions, then take out and dry at 105°C for 4.5h to obtain hydrogen peroxide modified adsorbent;

[0043] (3), prepare a mixed solution containing iron nitrate, copper nitrate, cobalt nitrate, nickel nitrate and ammonium fluoride, wherein the mass fractions of Fe, Cu, Co, and Ni are 2.5wt%, 2.5wt%, 4wt%, 3wt%, respectively %, the mass fraction of F is 2.5 wt%, add 500 mL of mixed solution to 200 g of the adsorbent modified with hydrogen peroxide, sonicate for 2.5 h under 90 Hz ultrasonic condi...

Embodiment 3

[0046] (1), the collected fly ash is ground into fine powder, after passing through a 200-mesh sieve, the fine powder passing through the sieve is washed and dried, and 200g of fine powder is taken, 140g of bentonite and 272g of distilled water are added, and after mixing, extrusion molding, Then, the pretreated adsorbent was obtained by calcining at 600 °C for 5 h;

[0047] (2), take 200g of pretreated adsorbent, add a total of 600mL of 12.5wt% hydrogen peroxide solution, sonicate for 3h under 80Hz ultrasonic conditions, then take out and dry at 110°C for 5h to obtain hydrogen peroxide modified adsorbent;

[0048] (3), prepare a mixed solution containing ferric nitrate, copper nitrate, cobalt nitrate, nickel nitrate and ammonium fluoride, wherein the mass fractions of Fe, Cu, Co, Ni are 3wt%, 2wt%, 4.5wt%, 4wt% respectively , the mass fraction of F is 3 wt%, 400 mL of mixed solution was added to 200 g of the adsorbent modified with hydrogen peroxide, sonicated for 2 h under 1...

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 discloses a modified fly ash adsorbent, a preparation method thereof, and an adsorption method of trimethylamine. The adsorbent uses fly ash as a raw material, and is modified by the following method: after the fly ash is pretreated and shaped, add hydrogen peroxide solution, carry out ultrasonic modification under normal temperature and ultrasonic wave, take out and dry; add the obtained product into In the metal salt and fluorine salt solution, ultrasonic modification is carried out at room temperature and ultrasonic wave, and then gradient calcination is carried out after drying. The adsorbent is low in price, green and environmentally friendly, and realizes the resource utilization of solid waste. At the same time, the adsorbent prepared by the invention has large specific surface area, high strength, large adsorption capacity, high adsorption efficiency, hydrophobicity and stability. high advantage.

Description

technical field [0001] The invention belongs to the field of industrial waste gas purification and environmental protection adsorption materials, and specifically relates to an adsorbent suitable for adsorbing trimethylamine, a preparation method thereof, and an adsorption method for trimethylamine. Background technique [0002] my country is a country that mainly uses coal as a one-time energy source. With the development of the power industry, the fly ash emissions from coal-fired power plants are increasing every year. Water will lead to the diffusion of heavy metal elements, which will seriously endanger the survival and health of human beings, and have a huge negative impact on my country's national economic construction and ecological environment. Fly ash has large surface area and porosity, and has good adsorption activity. How to realize the resource utilization and high-value utilization of fly ash is a big problem that needs to be solved urgently. [0003] In recen...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01D53/02B01J20/30
CPCB01J20/103B01J20/08B01D53/02B01D2257/40
Inventor 赵文凯高学顺段美荣杜永顺张宏科华卫琦
Owner WANHUA CHEM GRP CO LTD
Features
  • R&D
  • 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