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A method for evaluating needle coke raw materials

A needle coke raw material and evaluation method technology, which is applied in the field of needle coke raw material evaluation, can solve the problems of time-consuming and labor-consuming analysis process, and the inability to judge whether petroleum-based raw materials are mixed with coal-based components, etc.

Active Publication Date: 2021-02-12
SHANDONG YIDA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above analysis indicators cannot determine whether coal-based components are mixed with petroleum-based raw materials. At the same time, the analysis process is very time-consuming and labor-intensive, and requires professional testers and professional and expensive testing equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0021] Material

[0022] The needle coke petroleum raw material sample to be tested is catalytic cracking oil slurry from refinery A.

[0023] The standard petroleum raw material is catalytic cracking oil slurry from Yangzhou Petrochemical Co., Ltd., and the filter paper is Φ12.5 quantitative filter paper (medium speed 202, Whatman).

[0024] This embodiment provides a needle coke raw material evaluation method, which includes the following steps:

[0025] a) Take the filter paper soaked and dried in toluene, place it in a weighing bottle, and dry it at 115-120°C to constant weight;

[0026] b) Add 10mL of the needle coke petroleum raw material to be tested and 40mL of naphtha into a 100mL reaction beaker, place the beaker in a water bath at 40°C, and stir for 2 minutes;

[0027] c) Suction-filtering the mixture obtained in step b) on the filter paper obtained in step a), and the precipitate remains on the filter paper;

[0028] d) Wash the reaction beaker (20mL x 3) with n...

Embodiment 2

[0033] Material

[0034] The needle coke petroleum raw material to be tested is FCC oil slurry from Refinery B.

[0035] Other materials are the same as in Example 1.

[0036] This embodiment provides a needle coke raw material evaluation method, which includes the following steps:

[0037] a) Take the filter paper soaked and dried in toluene, place it in a weighing bottle, and dry it at 115-120°C to constant weight;

[0038] b) Add 10mL of the needle coke raw material to be tested and 40mL of gasoline into a 100mL reaction beaker, place the beaker in a 60°C water bath, and stir for 5 minutes;

[0039] c) Suction-filtering the mixture obtained in step b) on the filter paper obtained in step a), and the precipitate remains on the filter paper;

[0040] d) Wash the reaction beaker (20mL x 3) with gasoline at 60°C, transfer the remaining precipitate to the filter paper, filter with suction, and wash the precipitate on the filter paper with 40mL gasoline;

[0041] e) Dry the f...

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PUM

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Abstract

The invention discloses a needle coke raw material evaluation method, which utilizes the principle that the mixing of light liquid components in needle coke petroleum-based raw materials and heavy components in coal-based raw materials will rapidly produce precipitation, so as to quickly identify the purchased Whether coal-based raw materials are mixed with the needle coke petroleum-based raw materials. The method includes mixing a petroleum-based raw material to be tested with a test solvent, stirring at a certain temperature for a period of time, collecting and weighing the precipitate produced, and comparing the amount of the precipitate with the precipitate of a standard petroleum-based raw material that does not contain coal-based raw materials Quantities are compared to determine whether coal-based raw materials are mixed into the measured petroleum-based raw materials. The method of the invention can be used to help petroleum needle coke production enterprises to optimize the raw material procurement process and select high-quality raw material suppliers.

Description

technical field [0001] The invention relates to the technical field of needle coke production, in particular to a needle coke raw material evaluation method. Background technique [0002] With the intensified competition of steel products in our country, electric furnaces used to produce high-quality steel and special steel are rapidly developing towards ultra-high power and large-scale, prompting the use of needle coke with a high degree of graphitization to prepare high-power (HP) And ultra-high power (UHP) graphite electrode has become a research hotspot. HP and UHP graphite electrodes made of needle coke graphitization have the advantages of good chemical stability, strong thermal shock resistance, good mechanical strength, and corrosion resistance, which greatly improves the smelting efficiency. In addition, needle coke can also be used as a new type of aggregate for lithium-ion batteries, electric brushes, nuclear graphite, electrochemical containers and rocket techno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/82
CPCG01N21/82
Inventor 彭莉韩照宪李慎耐李军树郭冲
Owner SHANDONG YIDA NEW MATERIAL