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

Novel activated carbon fiber adsorbing substance as well as preparation method and use thereof

A technology of activated carbon fiber and adsorbent, which is applied in the application field of mercury removal adsorbent, can solve the problems of mercury removal, limited research stage, etc., and achieves the effects of strong adsorption capacity, high reactivity and easy realization.

Inactive Publication Date: 2009-07-15
ZHEJIANG UNIV OF TECH
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technologies for controlling mercury emissions: coal washing and washing to remove mercury, sorbent injection technology, conventional pollutant control and mercury removal technologies, etc., are still limited to the research stage
None of these technologies can completely remove mercury from waste gas, especially zero-valent mercury

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
  • Novel activated carbon fiber adsorbing substance as well as preparation method and use thereof
  • Novel activated carbon fiber adsorbing substance as well as preparation method and use thereof
  • Novel activated carbon fiber adsorbing substance as well as preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 1 g of ammonium heptamolybdate and place it in a beaker, add deionized water and stir to dissolve it. Transfer the ammonium heptamolybdate solution into a 250ml volumetric flask, and set to volume to obtain an ammonium heptamolybdate solution with a concentration of 4mg / ml. Get 4g activated carbon fiber (specific surface area is 1000m 2 / g of viscose-based activated carbon fiber) is placed in a 250ml brown jar, and 250ml of ammonium heptamolybdate solution is added. Under the condition of water bath at 40°C, after adsorption and impregnation for 24 hours, the activated carbon fibers were rinsed repeatedly with deionized water. Then it was placed in a porcelain boat, and heated and decomposed for 3 hours in a tube furnace at 450°C under an Ar atmosphere (air flow rate of 200ml / min), to obtain the surface-loaded molybdenum trioxide (MoO 3 ) of activated carbon fibers. During the thermal decomposition process, dilute hydrochloric acid solution is required to absor...

Embodiment 2

[0037] Weigh 1 g of ammonium heptamolybdate and place it in a beaker, add deionized water and stir to dissolve it. Transfer the ammonium heptamolybdate solution into a 250ml volumetric flask, and set to volume to obtain an ammonium heptamolybdate solution with a concentration of 4mg / ml. Get 4g activated carbon fiber (specific surface area is 1000m 2 / g of viscose-based activated carbon fiber) is placed in a 250ml brown jar, and 250ml of ammonium heptamolybdate solution is added. Under the condition of a water bath at 45°C, after standing for about 24 hours for adsorption, the activated carbon fiber was washed repeatedly with deionized water. Then it was placed in a porcelain boat, and heated and decomposed for 3.5 hours in a tube furnace at 450 ° C under an Ar atmosphere (air flow rate of 200 ml / min), and the surface-loaded molybdenum trioxide (MoO 3 ) of activated carbon fibers. During the thermal decomposition process, dilute hydrochloric acid solution is required to abso...

Embodiment 3

[0040] Weigh 10 g of ammonium heptamolybdate and place it in a beaker, add deionized water and stir to dissolve it, and prepare an ammonium heptamolybdate solution with a concentration of 4 mg / ml. Get 8g activated carbon fiber (specific surface area is 1000m 2 / g of viscose-based activated carbon fiber) is placed in a 500ml brown jar, and 500ml of ammonium heptamolybdate solution is added. Under the condition of a water bath at 50°C, after standing for adsorption for 48 hours, the activated carbon fiber was washed repeatedly with deionized water. Then it was placed in a porcelain boat, and heated and decomposed for 4 hours in a tube furnace at 500°C under an Ar atmosphere (air flow rate of 200ml / min), to obtain a surface-loaded molybdenum trioxide (MoO 3 ) of activated carbon fibers. During the thermal decomposition process, dilute hydrochloric acid solution is required to absorb the tail gas (NH 3 exhaust gas).

[0041] Take 5g MoO 3 - Activated carbon fiber is placed in...

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
Concentrationaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a novel activated carbon fiber adsorbent a preparation method and the application thereof. The activated carbon fiber adsorbent is characterized by carrying MoS2 on the surface of activated carbon fiber. The preparation method comprises the following steps: the activated carbon fiber is used as a carrier, ammonium molybdate is used as a precursor, and deionized water is used as a solvent to be prepared into steeping liquor, wherein the mass ratio of the activated carbon fiber to the ammonium molybdate is 1 : 0.25 to 0.3; the ammonium molybdate is carried in the activated carbon fiber by a wet immersion method, and then, the activated carbon fiber immersed with the ammonium molybdate is heated to 450 to 500 DEG C in inert atmosphere to be oxidized and decomposed to obtain MoO3-activated carbon fiber; and then, the MoO3-activated carbon fiber is heated to 800 to 825 DEG C in Ar / H2S to be sulfurized, and finally, the activated carbon fiber with the surface carried with MoS2 is prepared, i.e. the activated carbon fiber adsorbent is prepared. When the activated carbon fiber adsorbent is used for removing mercury in fume, the effect is good, and the activated carbon fiber adsorbent also has the advantages of simple preparation and easy process control.

Description

(1) Technical field [0001] The invention relates to a novel activated carbon fiber adsorbent and its preparation method and application, in particular to its application as a mercury-removing adsorbent. (2) Background technology [0002] Mercury is of great concern due to its high toxicity, bioaccumulation and difficulty in capturing. Lower concentrations of mercury reduce agricultural yields, while higher concentrations cause crop death. Mercury is converted to methylmercury under the action of microorganisms. Methylmercury is a more toxic substance than mercury and can cause even more harm. Once mercury is released into the atmosphere, it can persist in the environment and cause long-term pollution problems. A large portion of mercury in the atmosphere comes from anthropogenic activities. Among them, the mercury produced by coal combustion and waste incineration accounts for the vast majority. [0003] The current flue gas pollution control devices can remove divalent...

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): B01J20/20B01J20/28B01J20/32
Inventor 任建莉罗誉娅陈俊杰徐璋张雪梅钟英杰
Owner ZHEJIANG UNIV OF 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