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Method for producing form coke from Jurassic steam coal

A thermal coal and semi-coke technology, which is applied in coking ovens, special dry distillation, petroleum industry, etc., can solve the problems of affecting the amount of coal tar and not removing coal tar, and achieves low production cost, low environmental pollution and good quality Effect

Inactive Publication Date: 2005-03-16
葛立凯 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent does not carry out distillation pretreatment to coal tar, and does not remove components such as ammonia water in coal tar, which affects the consumption of coal tar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Pulverize Jurassic steam coal with a pulverizer to a particle size of 0-5mm, wash and dry through a flotation machine system and a jig system to make washed raw coal.

[0022] (2) Put the cleaned raw coal into an external-combustion and internal-heating vertical carbonization furnace and dry distillation at a high temperature of 950°C for 10 hours to obtain high-temperature coal tar and semi-coke, which are pulverized with a pulverizer until the particle size is below 0.8mm to make Jurassic Ji thermal coal semi-coke powder.

[0023] (3) Crush the coking coal to a particle size of 0-5 mm, wash and dry it through a flotation machine system and a dense medium washing machine system to obtain washed caking coal, and crush it with a pulverizer until the particle size is below 0.4 mm. Become coking coal powder binding agent, fat coal adopts the same method to make fat coal powder binding agent.

[0024] (4) Coal tar is made into tar pitch binder after 250~300 ℃ of distil...

Embodiment 2

[0032] In this example, in the preparation process of Jurassic thermal coal semi-coke powder, the washed raw coal is loaded into an external combustion and internal heating vertical carbonization furnace and subjected to high-temperature dry distillation at 1150°C for 4 hours to obtain high-temperature coal tar and semi-coke .

[0033] In the preparation process step of coal briquette, the weight proportion of used mixture raw material is as follows:

[0034] Tar Pitch Binder 8%

[0035] Coking coal (caking index G is 110) powder binder 15%

[0036] Jurassic Thermal Coal Semi-coke Powder Added to 100%

[0037] Put the briquettes into an external-combustion and internal-heating vertical carbonization furnace and carbonize them at 1150°C for 5 hours to make briquettes. Other steps of the form coke preparation method are the same as in Example 1.

Embodiment 3

[0039] In the process step of present embodiment briquette, the weight ratio of used mixture raw material is as follows:

[0040] Tar Pitch Binder 15%

[0041] Coking coal powder binder 25%

[0042] The other steps of the Jurassic thermal coal semi-coke powder added to 100% molded coke preparation method are the same as in Example 1.

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Abstract

Method for producing form coke from Jurassic steam coal comprising the steps of, coal disintegrating, washing, drying, dry distillation so as to obtain high temperature coal tar and half-tar or refined gluing coal, disintegrating to below 0.4mm, obtaining powdered coal binding agent, distilling into pitch binding agent, preparing shaped coal by mixing 8-15% of pitch binding agent, 15-25% of powdered coal binding agent, charring the molded coal to obtain molded coke.

Description

technical field [0001] The invention belongs to the technical field of a coke production method, and in particular relates to a method for producing molded coke from Jurassic thermal coal. Background technique [0002] my country needs more than 100 million tons of metallurgical coke annually, but the annual output of first-grade (12% ash) metallurgical coke is only over 30 million tons, half of which is exported and the remaining half is used by the domestic metallurgical industry. At present, the domestic first-grade metallurgical coke is seriously out of stock . The reason for the serious shortage of high-quality coke is that coking coal is used to produce coke by ordinary coking methods. According to statistics in 1987, my country's coking coal reserves accounted for 28% of the national coal reserves. Coking coal is scarce, and its ash content is high, and it is difficult to wash. Low-ash, low-sulfur washed and refined coke has less raw coal, so it is difficult to produce...

Claims

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Application Information

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IPC IPC(8): C10B53/04
Inventor 葛立凯
Owner 葛立凯
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