Method for producing calcined coke by pot type furnace

A technology of calcining coke and pot furnace, which is applied in coking ovens, coking carbonaceous materials, petroleum industry, etc. It can solve the problems of easy generation of large dust, small particle size of products, and difficulty in meeting industrial production, so as to avoid environmental pollution problems, Stabilization of thermal reactivity and improvement of production efficiency

Inactive Publication Date: 2008-09-17
JECT QINGDAO
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  • Abstract
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Problems solved by technology

The calcined coke produced by the traditional process of rotary kiln or tank furnace has a small particle size and low strength because no pitch is added, and a large amount of dust is easily generated during transportation, causing serious pollution
Moreover, the product is consumed too quickly at high temperatures, which is difficult to meet the needs of industrial production
The mechanical coke oven uses petroleum coke and pitch as raw materials to produce calcined coke. Although it can overcome the problems of particle size and strength, the yield of calcined coke produced by the mechanical coke oven is low, and the production cycle of the mechanical coke oven is long and the investment is large. Cannot flexibly change the particle size of calcined coke, it is difficult to meet the needs of different users

Method used

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  • Method for producing calcined coke by pot type furnace

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Raw material ratio: In terms of weight ratio, petroleum coke is 85%, and pitch is 15%.

[0035] The above-mentioned petroleum coke is pre-crushed to less than 10 mm, and the pitch is melted into a liquid state to facilitate its kneading and molding.

[0036] (2) Put the above-mentioned raw materials into a kneading pot and knead for 40 minutes to obtain a uniform paste.

[0037] (3) Transfer the above-mentioned paste to a molding machine, and produce a molded green body with a particle size of 30 mm through die extrusion.

[0038] (4) Sprinkle the petroleum coke powder protective material on the surface of the green body, wherein the ratio of the green body to the coke powder is 80% / 20% by weight. The green body and coke powder protective material are loaded into the top of the tank furnace through a hoist for calcination, the furnace temperature is controlled at about 1200 degrees, and the coke is slowly calcined for 60 hours.

[0039] (5) The finished calcined coke an...

Embodiment 2

[0050] (1) Raw material ratio: In terms of weight ratio, petroleum coke is 75%, calcined coke is 10%, and pitch is 15%.

[0051] The above-mentioned petroleum coke and calcined coke are pre-crushed to less than 10mm; the pitch is melted into a liquid state.

[0052] (2) Put the above raw materials into a kneading pot and knead for 50 minutes to obtain a uniform paste.

[0053] (3) Transfer the above paste to a molding machine, and produce a molded green body with a particle size of 50 mm through die extrusion.

[0054] (4) Sprinkle the petroleum coke powder protective material on the surface of the green body, wherein the ratio of the green body to the coke powder is 70% / 30% by weight. The green body and the coke powder protective material are loaded into the top of the tank furnace through a hoist for calcination, the furnace temperature is controlled at about 1250 degrees, and the coke is produced after 72 hours of slow calcination.

[0055] (5) The finished calcined coke and ca...

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Abstract

The invention discloses a calcined coke preparation method using a pot furnace. The method takes ordinary petroleum coke and asphalt as materials and produces the finished calcined coke of larger particle size and higher intensity after the pretreatment, mixing kneading, extrusion, calcination, screening and other crafts of the materials. The preparation method has solved a plurality of problems in prior art, for example, the small size and low intensity of the calcined coke produced by a rotary kiln and a pot furnace and the low yield and big investment of the calcined coke produced by a mechanical coke oven.

Description

Technical field [0001] The invention relates to a method for producing calcined coke, in particular to a method for producing high-strength calcined coke by calcination in a tank furnace. Background technique [0002] Calcined coke can be used to produce graphite electrodes, carbon paste products, emery and other products. It is also widely used in high-end chemical industries, such as MDI, TDI and polycarbonate and other engineering plastics industries. At present, the method of producing calcined coke is mainly produced in rotary kiln, mechanical coke oven and retort furnace. The calcined coke produced by the traditional process of rotary kiln or tank furnace, because no asphalt is added, the product has a small particle size and low strength, and it is easy to generate a large amount of dust during transportation and cause serious pollution. Moreover, the product consumes too fast under high temperature, and it is difficult to meet the needs of industrial production. Mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C10B55/02
Inventor XIAO PINGLONGGONG YAOXIN
Owner JECT QINGDAO
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