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

Device and method for rapidly preparing high-yield activated carbon by coupling of pressure pump with microwaves

A high-yield, activated carbon technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problem of restricting the large-scale promotion of microwave activation method, reducing the yield of solid product activated carbon, and affecting the heat transfer of pipeline exhaust furnace body, etc. problems, to achieve the effect of reducing the reaction activation energy, shortening the process operation time, increasing the yield and the degree of graphitization

Inactive Publication Date: 2019-03-08
DALIAN UNIV OF TECH
View PDF13 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these traditional microwave heating methods solve the problems of slow mass transfer speed and long process time of resistance heating, a large amount of tar will be produced in the actual microwave carbonization or activation process
On the one hand, the generation of tar is easy to block the pipeline or adhere to the surface of the furnace body, affecting the exhaust of the pipeline or the heat transfer of the furnace body; The yield of solid product activated carbon is greatly restricted, which seriously restricts the large-scale promotion of microwave activation method in industry.

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
  • Device and method for rapidly preparing high-yield activated carbon by coupling of pressure pump with microwaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Open the feeder 9 and the feed valve 10 to transport 500g of straw powder and 500g of NaOH activator particles to the center of the reaction furnace 3 . After the feeding is completed, the feeder 9 and the feed valve 10 are closed. Open the gas storage tank 17, adjust the pressure flow controller 18 to 1000mL / min, open the inlet valve 11 to feed nitrogen into the reaction furnace 3 until the program controller shows that the high pressure in the reaction furnace 3 reaches 5MPa. Close the air storage tank 17, the pressure flow controller 18 and the intake valve 11. Start the circumferential rotation device 13, and turn on the microwave generator 20 at the same time, set the multi-level and multi-gradient heating mode through the timing-power control element 21 and the program controller 1, the specific parameters are as follows: heat with 400W power for 300s, and then increase the power To 800W, maintain 600s. Five minutes before the completion of the microwave activat...

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 belongs to the technical field of carbon material preparation and provides a device and a method for rapidly preparing high-yield activated carbon by coupling of a pressure pump with microwaves. The device comprises a programmed controller, a feed unit, a reaction furnace, a pressure pump unit, a microwave heating unit, an explosive spraying and cooling unit and a pyrolysis gas treating unit. Friction and collision of raw material molecules are caused by the microwaves, reaction activation energy is reduced, and the process operation time is shortened greatly. Retention time of volatile matter is prolonged by pressing of the pressure pump, the volatile matter is promoted to be deposited on surface of semi-coke, and accordingly, yield of solid carbon is increased; condensationpolymerization of tar is also promoted by pressing, and production of the tar is reduced substantially or avoided. Besides, pyrolysis gas can be produced from inside of the raw materials by the aid of microwave heating, pyrolysis gas molecules retain in the raw material molecules under the pressing action to play a role of in-situ self-template and shuttle back and forth freely in the raw materials non-directionally to substantially promote pore development of the activated carbon, the instantaneous popcorn effect is beneficial to secondary pore forming of the pyrolysis gas, and the specificsurface area of a carbon material is increased.

Description

technical field [0001] The invention relates to a device and method for rapidly preparing high-yield activated carbon by coupling microwaves with a "pressure pump", which has the characteristics of fast heating speed, high output of activated carbon, near-zero tar emission and continuous production, and belongs to the technical field of carbon material preparation. Background technique [0002] Activated carbon is widely used in adsorption, catalysis, energy storage, hydrogen storage, decolorization and other fields due to its rich pore structure and good chemical stability. At present, common activated carbon preparation process furnaces include: fixed furnace, fluidized bed, rotary furnace and bubbling bed. For example, Chinese patent document CN108298535A discloses a method for preparing copper algae-based mesoporous activated carbon using a rotary atmosphere furnace physical activation method; The method of nitrogen activated carbon; Chinese patent document CN108249435A...

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 Applications(China)
IPC IPC(8): C01B32/324C01B32/348C01B32/39C01B32/342
CPCC01B32/324C01B32/342C01B32/348C01B32/39
Inventor 高原姬国钊李爱民张雷王欣
Owner DALIAN 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