Gasification, dry distillation and carbonization integrated system carbonization

A semi-coke and gas-coal technology, which is applied in the field of coking products, can solve the problems of insufficient raw material sources, amorphous products, and low utilization rate, and achieve considerable economic benefits, low cost, and improved coal utilization rate. Effect

Inactive Publication Date: 2008-08-27
朱海涛
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  • Summary
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AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of the existing natural coking technology, such as tight supply of coking coal, high price, insufficient source of raw materials and the inconvenient shape of its products, which need to be separated before use, and low utilization rate, a two-step coking method was invented. The purpose is to realize Fatty coal, gas coal, non-caking coal, long-flame coal, lignite, and peat can all be coked, and shaped coke products can be produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Heat the non-caking coal under the condition of anaerobic carbonization temperature of 750° C.±50° C. for 3 hours to obtain non-caking coal semi-coke.

[0025] (2) Crushing and screening non-caking coal semi-coke and binder to a particle size of less than 1.5 mm. The binder used has a cohesive index G≥90, ash content≤9%, and sulfur≤0.42% (weight). The binder is selected from at least one of fat coal, coking coal, coal tar pitch, petroleum pitch, and high-temperature coal tar or a mixture of high-temperature coal tar.

[0026] (3) Fully and evenly mix non-caking coal semi-coke, binder and tar according to 55-75% of non-caking coal semi-coke, 15-25% of binder and 10-20% of tar.

[0027] (4) At normal temperature, the pressure is P=30MPa±10MPa.

[0028] (5) Carbonize under the condition of anaerobic high temperature of 1000±50° C., and after 4 hours of carbonization, the product first-grade metallurgical coke is obtained.

Embodiment 2

[0030] Long-flame coal is dry-distilled into semi-coke, crushed according to the proportion of semi-coke 55-75%, binder 15-25%, and tar 10-20%, fully and evenly mixed, pressurized and formed at room temperature, and carbonized into first-grade metallurgical coke. Others are the same as embodiment 1.

Embodiment 3

[0032] The fat coal is dry-distilled into semi-coke, crushed according to the proportion of semi-coke 55-75%, binder 15-25%, and tar 10-20%, fully and evenly mixed, pressurized and formed at room temperature, and carbonized into first-grade metallurgical coke. Others are the same as embodiment 1.

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Abstract

The invention relates to a coking method which adopts two-step methods to produce formed coke to fat coal, gas coal, non-caking coal, long flame coal, brown coal and peat. The two-step method comprises adding raw material coal into a coking furnace to coke after thermally process to be semi coke in middle temperature, namely gasification, dry distillation, carbonization integrated system coking method, and achieving the purpose of coking fat coal, gas coal, non-caking coal, long flame coal, brown coal and peat through utilizing the two-step coking method, breaking raw material coal to be grain size which is under 1.5mm, adding right amount of mineral binder bond and coke tar to mix, molding through cold pressure, and modeling coke products through high temperature carbonization. Since the above mill coal can coke, which solves the problem of coking coal shortage, generates bigger social benefit, and can local and ground proximity coal coking, therefore the production cost is lowed, and considerable economic benefit can be produced. The appearance of GCC two-step coking method colors the integral coking technique, and extends the development of the field.

Description

technical field [0001] The invention relates to the field of coal coking, in particular to the coking method of fat coal, gas coal, non-caking coal, long-flame coal, lignite and peat and the type coking of coking products. Background technique [0002] The existing coking technology is the natural coking method. The main raw material coal used is coking coal. Due to its natural characteristics, coking coal has high caking performance. After the volatile matter is heated and overflows, an amorphous coke product is naturally formed. This coking process is called carbonization process. Generally, the existing coking technology that relies on the natural inherent caking properties of raw coking coal itself to coke it is called "natural coking method". [0003] To evaluate the cohesiveness of coal, use the "cohesive index G" to express it. If there is no cohesiveness, it is said that the cohesive index G=0. Using the existing natural coking technology, it is impossible to conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/02
Inventor 葛立奎
Owner 朱海涛
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