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

Process for industrially preparing acicular coke from coal

A needle coke and coal-based technology, applied in the field of coking and chemical industry, can solve the problems of slagging in the kettle, blockage of pipes, insufficient heat supply, etc., achieve uniform reaction and avoid blockage

Inactive Publication Date: 2002-12-25
ANSHAN COKING REFRACTORY MATERIAL DESIGN GENERAL INST CHINA METALLURGY CONSTRUCTURE GROUP
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent on coal-based needle coke (Patent No. ZL86100675) obtained by Anshan Jiao Nai Institute in 1986 encountered many difficulties when it was implemented in industrial equipment, mainly as follows: (1) The fraction of the flash oil obtained by flashing first is relatively wide , in the polycondensation process, when the flash oil reaches a certain depth, the heavier components will block the pipeline after polycondensation, resulting in unsmooth production; The outlet temperature is too high, resulting in slagging in the kettle. (3) The coking operation adopts the general delayed coking method, and the material (mixed oil) entering the coking tower contains quinoline incompatible QI components, resulting in needle coke in the coking tower The quality of the

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
  • Process for industrially preparing acicular coke from coal
  • Process for industrially preparing acicular coke from coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] According to the above industrial production process of coal-based needle coke, the raw materials and product quality are as follows:

[0021] Soft asphalt: softening point (SP) 30°C, ash content (A) 0.05%, quinoline content (QI) 4%, benzene content (BI) 8.5%, sulfur content (S) 0.05%

[0022] this invention

(Ansteel Raw Material)

this invention

(Baosteel Raw Materials)

Mitsubishi Corporation

Volatile matter (V)

＜0.5％

＜0.5％

0.56

True specific gravity: (d)

2.13

2.12

2.12

Resistivity (ρ)

10 -6 Ωmm 2 / m

5

6.5

5.5

Thermal expansion coefficient

(CTE)×10 -6 / °C

0.99

1.56

1.0

[0023] Explanation: V and d are the measured values ​​after calcining the pointer coke, and ρ and CTE are the measured values ​​after graphitization of the specimen.

[0024] CTE is a measured value at 100-600°C.

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

A process for industrially preparing coal acicular coke uses coal tar, tar asphalt, soft tar asphalt and tar fraction as raw materials, and includes such steps as polycondensation in cyclic mode, flash evaporating, and coking in coking tower. Its advantages are not blocking equipment, high uniformity of reaction materials, and easily removing polar and inert moleculae and the QI component incompatible to quinoline.

Description

technical field [0001] The invention belongs to coking chemical technology, and is an industrial process for preparing coal series needle coke. Background technique [0002] At present, only Japan adopts the solvent method to produce coal-based needle coke in the world, and there is no one in China so far. The patent on coal-based needle coke (Patent No. ZL86100675) obtained by Anshan Jiao Nai Institute in 1986 encountered many difficulties when it was implemented in industrial equipment, mainly as follows: (1) The fraction of the flash oil obtained by flashing first is relatively wide , in the polycondensation process, when the flash oil reaches a certain depth, the heavier components will block the pipeline after polycondensation, resulting in unsmooth production; The outlet temperature is too high, resulting in slagging in the kettle. (3) The coking operation adopts the general delayed coking method, and the material (mixed oil) entering the coking tower contains quinoli...

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): C10B53/00
Inventor 刘光武叶煌
Owner ANSHAN COKING REFRACTORY MATERIAL DESIGN GENERAL INST CHINA METALLURGY CONSTRUCTURE GROUP
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