Unlock instant, AI-driven research and patent intelligence for your innovation.

A raw coal direct liquefaction treatment agent, activated carbon fiber and preparation method thereof

A technology of direct liquefaction of activated carbon fiber and coal, which is applied in the field of carbon fiber, can solve the problems that the mechanical properties and strength of activated carbon fiber cannot meet the requirements, and the cost of raw materials is high, so as to achieve good mechanical properties, reduce raw material costs, and save costs.

Active Publication Date: 2022-03-01
INST OF CHEM CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a raw coal direct liquefaction treatment agent, activated carbon fiber and its preparation method, which solves the problem that the mechanical properties and strength of the existing activated carbon fiber cannot meet the requirements and the cost of raw materials for its preparation is high.

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 raw coal direct liquefaction treatment agent, activated carbon fiber and preparation method thereof
  • A raw coal direct liquefaction treatment agent, activated carbon fiber and preparation method thereof
  • A raw coal direct liquefaction treatment agent, activated carbon fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0045] Furthermore, the present invention also provides a method for preparing activated carbon fibers based on coal direct liquefaction, comprising the following steps:

[0046] Step 1, using ethylene glycol-glycerin-potassium hydroxide system to directly liquefy the raw coal;

[0047] In the above step 1, the ethylene glycol-glycerol-potassium hydroxide system is used as the coal direct liquefaction treatment agent, and the raw coal with a particle size of 100-300 mesh is mixed with the ethylene glycol-glycerin-potassium hydroxide system, placed in In the stainless steel high-pressure reactor, the amount of ethylene glycol-glycerin-potassium hydroxide system used is 3 to 6 times the mass of the raw coal, and the air in the reactor is replaced with nitrogen, and the reactants are mixed evenly by mechanical stirring, and the stirring rate is 60 ~300rmp / min.

[0048] In the present invention, controlling the direct liquefaction temperature and time of the raw coal within the a...

Embodiment 1

[0062] In this embodiment, ash-free lignite is selected as the raw material, and the massive raw coal is pulverized by mechanical pulverization, and then sieved to control the particle size at 200 mesh; the pulverized raw coal uses 15 times the deionized water in an ultrasonic cleaner (20kHz) Treat for 30 minutes, filter and dry at 150°C until the water content is lower than 2%.

[0063] The preparation method of the activated carbon fiber based on the direct liquefaction of coal provided in this embodiment comprises the following steps:

[0064] Step 1. Mix 100 g of raw coal powder with ethylene glycol-glycerin-potassium hydroxide system and place it in a stainless steel high-pressure reactor (direct liquefaction parameters are listed in Table 1). Nitrogen was used to replace the air in the reaction kettle, and mechanical stirring was used to make the reactants mix uniformly, and the stirring rate was 180rmp / min. The direct coal liquefaction product is washed with 10 times w...

Embodiment 2

[0072] Use ash-free lignite as the raw material, crush the massive raw coal by mechanical crushing, and then sieve to control the particle size at 200 mesh; the crushed raw coal is treated with 15 times deionized water in an ultrasonic cleaner (20kHz) for 30min, After filtering, dry in a drying machine at 150°C until the water content is lower than 2%.

[0073] The preparation method of the activated carbon fiber based on the direct liquefaction of coal provided in this embodiment comprises the following steps:

[0074] Step 1, 100g raw coal powder is mixed with 450g ethylene glycol-glycerin-potassium hydroxide system and placed in a stainless steel autoclave, 58.5g of potassium hydroxide is contained in the 450g ethylene glycol-glycerol-potassium hydroxide system, Glycol 195.8g, glycerol 195.8g. Nitrogen was used to replace the air in the reaction kettle, and mechanical stirring was used to make the reactants mix uniformly, and the stirring rate was 180rmp / min. The raw coal...

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
tensile strengthaaaaaaaaaa
elastic modulusaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention relates to a raw coal direct liquefaction treatment agent, activated carbon fiber and a preparation method thereof, belonging to the technical field of carbon fiber materials, and solves the problems that the mechanical properties and strength of the existing activated carbon fiber cannot meet the requirements and the cost of raw materials for its preparation is high. The preparation method of the activated carbon fiber of the present invention comprises: step 1, adopting ethylene glycol-glycerin-potassium hydroxide system to directly liquefy the raw coal; step 2, separating the low boiling point components from the product obtained by the direct liquefaction of the raw coal, The remaining high-boiling point components are subjected to heat treatment modulation, melt spinning and non-melting treatment in sequence to form an activated carbon fiber precursor material; step 3, the activated carbon fiber precursor material is subjected to carbonization treatment and activation treatment in sequence to prepare activated carbon fiber. The invention reduces raw material cost and realizes high value-added utilization of coal.

Description

technical field [0001] The invention relates to the technical field of carbon fiber, in particular to a raw coal direct liquefaction treatment agent, activated carbon fiber and a preparation method thereof. Background technique [0002] Coal is a solid carbon-rich mineral produced by ancient plants through complex biochemical, physicochemical, and geochemical transformations. Coal provides 41% of the world's energy demand through direct combustion and thermal power generation. Coal is also widely used in the production of basic chemicals in steel, cement, and coal chemical industry. Coal is also used as a raw material to produce activated carbon materials for simple adsorption. Coking by-products The product coal tar is also used as a precursor for various carbon materials. Coal produces synthesis gas through the coal gasification process, and then synthesizes basic chemicals such as methanol and dimethyl ether based on the synthesis gas. Coal can be converted into hydrocar...

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): C10G1/06D01F9/15
CPCC10G1/065D01F9/15
Inventor 李峰波袁国卿宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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