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Method for intensively producing refractory material through coal tar pitch needle coke

A technology for refractory material and coal tar pitch, which is applied in the field of high temperature carbon material preparation and application, can solve the problems of increasing the production cost of coal tar pitch needle coke and the like, achieve high slag resistance, reduce production costs, and ensure the effects of clean production

Active Publication Date: 2013-05-15
YUNNAN COAL & ENERGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its defects will increase the production cost of coal tar pitch needle coke and form solid waste in the production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A. Get raw material by the formula of following mass percentage:

[0032] Coal tar pitch 50%

[0033] Upgraded Coal Tar 40%

[0034] Regulator 9.0%

[0035] Nickel, vanadium, cobalt removal agent 1.0%;

[0036] Among them, the modified coal tar is obtained through the following method: according to the mass ratio of coal tar:by-product oil=30:45, after mixing the coal tar and the by-product oil of the needle coke delayed coking tower, the amount is 1L / min , put industrial-grade hydrogen into the mixed oil, and at a temperature of 460°C, a pressure of 0.1Mpa, and an oil-gas rate ratio of 2.0h -1 , the catalyst is γ-Al 2 o 3 , ZSM-5 molecular sieves, react for 15 hours, and obtain modified coal tar; the regulator is a regulator with an aromatization degree of BMCI of 75, which is composed of the following organic substances: crude benzene, toluene, heavy benzene, diesel oil, ethylene glycol ; Coal tar pitch is a medium-temperature pitch, which is a light coal tar b...

Embodiment 2

[0044] A. Get raw material by the formula of following mass percentage:

[0045] Coal tar pitch 30%

[0046] Upgraded Coal Tar 45%

[0047] Regulator 14.5%

[0048] Nickel, vanadium, cobalt removal agent 10.5%;

[0049] Wherein, the modified coal tar is obtained through the following method: according to the mass ratio of coal tar:by-product oil=50:40, after mixing the by-product oil of coal tar and needle coke delayed coking tower, press 0.8L / min amount, put industrial-grade hydrogen into the mixed oil, and at a temperature of 400°C, a pressure of 5Mpa, and an oil-gas rate ratio of 3.0h -1 , the catalyst is γ-Al 2 o 3 , ZSM-5 molecular sieve, react for 12 hours to obtain modified coal tar; the regulator is a regulator with an aromatization degree of BMCI of 30, which is composed of organic kerosene; coal tar pitch is medium temperature pitch, which is the delayed coking of coal needle coke The light coal tar produced by the process; the nickel, vanadium and cobalt remo...

Embodiment 3

[0057] A. Get raw material by the formula of following mass percentage:

[0058] Coal tar pitch 35%

[0059] Upgraded Coal Tar 40%

[0060] Regulator 19.5%

[0061] Nickel, vanadium, cobalt removal agent 5.5%;

[0062] Wherein, the modified coal tar is obtained through the following method: according to the mass ratio of coal tar:by-product oil=40:50, after mixing the by-product oil of coal tar and needle coke delayed coking tower, press 0.20L / min amount, put industrial-grade hydrogen into the mixed oil, and at a temperature of 350°C, a pressure of 3Mpa, and an oil-gas rate ratio of 0.1h -1 , the catalyst is γ-Al 2 o 3 , ZSM-5 molecular sieve conditions, react for 3 hours, and obtain modified coal tar; the regulator is a regulator with an aromatization degree of BMCI of 55, which is composed of the following organic substances: propylene glycol, aromatic solvent oil, washing oil, anthracene oil, Aromatic solvent oil; coal tar pitch is a medium temperature pitch, which i...

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Abstract

The invention discloses a method for intensively producing a refractory material through coal tar pitch needle coke. Unutilized QI1 residues of the prior art, coal tar, delayed coking tower side oil products, a modifier and a nickel, vanadium and cobalt removing agent are subjected to separation, sedimentation, purification and oxidization modification to produce a refractory material adhesion agent with high softening point; the refractory material adhesion agent has the performances of high slag resistance, oxidation resistance and thermal shock resistance, is mixed with active agents such as white carbon black, ammonium humate, polyvinyl alcohol, carboxymethyl cellulose and the like and dry pressed to obtain the refractory material for a steel refining furnace, and the refractory material is better than phenolic resin; and the refractory material, carbon black, dimethylbenzene, benzofuran, polyethylene glycol and the like are dissolved, mixed and dissolved so as to obtain a liquid spraying adhesion agent for repairing the steel refining furnace, and the repairing strength of the liquid spraying adhesion agent is better than the repairing strength of common medium temperature pitch. The service lives of equipment such as converters, electric furnaces, calcinators and the like can be prolonged.

Description

[0001] technical field [0002] The invention relates to a method for intensively producing refractory materials from coal tar pitch needle coke, and belongs to the technical field of preparation and application of high-temperature carbon materials. Background technique [0003] Softening point is one of the main performance indicators of coal tar pitch binder, especially for coal tar pitch binder used in electric furnace, converter steelmaking and high temperature calcination equipment, the softening point of coal tar pitch is required to be as high as 230-280 At the same time, coal tar pitch is also required to have high slag resistance, oxidation resistance, and thermal shock resistance, otherwise it will directly affect the service life of converters and electric furnaces, which cannot be achieved by ordinary medium-temperature and high-temperature coal tar pitch. Most of the existing coal tar pitch binders are produced through the oxidative polycondensation of mesophase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 尹思聪张丕祥徐东升周霞萍班卫静张义超薛明俊
Owner YUNNAN COAL & ENERGY
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