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

A method for preparing needle coke using specific raw materials

A technology for needle coke and raw materials, which is used in coke ovens, coking carbonaceous materials, petroleum industry, etc., can solve the problems of low crushing strength, product quality decline, low microstructure anisotropy rate of needle coke, etc. low cost effect

Active Publication Date: 2021-06-22
平顶山旭阳兴宇新材料有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the existing needle coke production process, the problems of low anisotropy rate and high thermal expansion coefficient in the needle coke microstructure often occur
The crushing strength of needle coke is low, resulting in a decline in product quality, low yield, and high production costs. People can adjust the strength and microstructure of raw coke by adjusting the operating temperature and pressure of coking, but these reaction parameters Adjustments are not yet able to obtain stable product quality

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 method for preparing needle coke using specific raw materials
  • A method for preparing needle coke using specific raw materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Coal tar 1 was obtained at a certain time for testing and its density at 20°C was 1.250 g / cm 3 , the content of TI is 8.91wt%, and the amount of QI is 2.12wt%. The content of phenolic substance in coal tar 1 is 2.2wt%.

[0057] Coal tar is distilled at atmospheric pressure to obtain tar pitch at 40°C with a softening point, and the yield is 75%. The removal of QI is carried out under a known solvent precipitation process. The selected solvent is kerosene, methylnaphthalene, kerosene: methyl The ratio of naphthalene is 1.2:1, the mixed solvent: asphalt is 0.8:1, the settling temperature is 120 degrees, and the settling time is 8 hours. The refined asphalt after deQI treatment has a yield of 80%. It is tested that it is lower than 300 and 360°C The fraction contents are 0.1%, 10%, TI 12.35%, QI 0.02%, naphthalene and acenaphthene content 0.02%, phenanthrene and anthracene content 7%, fluoranthene and pyrene content 4.5%.

Embodiment 2

[0065] Obtain coal tar 1-1 at another time and test its density at 20°C to be 1.197g / cm 3 , the content of TI is 7.2wt%, and the amount of QI is 1.87wt%. The content of phenols in coal tar 1 is 2.4wt%.

[0066] Coal tar is distilled at atmospheric pressure to obtain softening point at 40 ℃ of tar pitch, and yield is 73%, carries out the operation of removing QI identical with example 1 afterwards, and yield is 80%, and it is tested that it is lower than 300, 360 ℃ The fraction contents are 0.3%, 9%, TI9.46%, QI 0.01%, naphthalene and acenaphthene content 0.05%, phenanthrene and anthracene content 6%, fluoranthene and pyrene content 4.1%.

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

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The present disclosure provides a method for preparing needle coke using a specific raw material, which is characterized in that the raw coal gas in the coking plant is sprayed with ammonia, and the tar obtained by gas-liquid separation is separated as a raw material, which is distilled and refined Pitch: using the refined pitch as a raw material to prepare needle coke. According to the method of the present disclosure, the strength of the prepared needle coke can be increased and the coefficient of thermal expansion can be reduced at low cost without requiring much modification of the existing process.

Description

technical field [0001] The present disclosure relates to the control and adjustment of raw materials in the production process of needle coke. Specifically, the present disclosure relates to a method of producing needle coke using certain feedstocks. Background technique [0002] The coal tar by-product of high-temperature carbonization of coal is recovered from raw coal gas, and the raw coal gas from the coke oven carbonization chamber is cooled, transported, and recovered coal tar, ammonia, sulfur, benzene and other chemicals in the chemical recovery workshop. The process of collecting coal tar from raw gas is spraying and cooling raw gas with ammonia water—primary cooler—electric trap. The raw gas, tar and ammonia water from the coke oven at 82°C go to the gas-liquid separator along the gas pipeline, and after gas-liquid separation Raw gas comes out from the upper part and enters the horizontal tube primary cooler for cooling in two stages. The upper section of the prim...

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): C10B55/00
CPCC10B55/00
Inventor 庞伟伟党伟荣陈西波刘哲赵士夺冯旭阳龚亚兵杜彭立李卫刚
Owner 平顶山旭阳兴宇新材料有限公司