Method for producing experimentation crucible coke

Abstract

The invention relates to a method to produce experimental crucible coke. The invention resolves the existing problems at present, such as the uneven quality of the coke due to the rough particles of coal with lower content of the fine powder, the requirement of water control on the coal sample, and the short period of constant temperature. The method to produce experimental crucible coke comprises the following steps that: air-dried coal sample with the granularity less than or equal to 1.5mm is added into a crucible, and the bulk density is 0.75-0.80t / m<3>; an asbest paper with the thicknessof 0.5-1.0mm is arranged on the coal sample, a layer of fine coke powder with the thickness of 5-10mm is arranged on the asbest paper, a perforated weight is arranged on the fine coke powder, a layerof fine coke powder with the thickness of 1-5mm is arranged on the perforated weight; after the cover is closed, the crucible is placed into an experimental coke oven and fractioned heating is carried out, with the temperature-rising speed of 4-5 DEG C / min before 300DEG C, 3 DEG C / min before 300-750 DEG C, 3.8-4.5 DEG C / min before 750-950 DEG C, and the constant temperature is maintained for 3-4 hours under 950 DEG C. The refined coke provided by the invention has even texture, good quality, and great adaptability to large-scale production.

Description

A method of producing test crucible coke technical field The present invention relates to a method for producing coke, more specifically, it belongs to a method for producing test crucible coke. Background technique With the increasing shortage of coking coal resources, there are many types and large quantities of single coking coal commonly used in coking plants, so choose a reasonable coal blending plan, especially evaluate the thermal properties of single coal coke and coal blending with different ratios , the workload is very large, so using the crucible coke experiment for research can save a lot of manpower and energy consumption. At present, the operating procedures for preparing crucible coke are mainly derived from the simulation of coking in industrial large-scale coke ovens. The particle size of coal samples is less than 3mm and greater than 85%, the water content of coal samples is about 10%, and the bulk density is about 0.75t / m3. block; control the temperat...

AI Technical Summary

Problems solved by technology

3. The above-mentioned crucible coke temperature control method is only suitable for the production of crucible coke with a very small amount of coal, but for the production of crucible coke with a large amount of coal, the constant temperature time at 950°C is too short, and the coke formed is in an obvious black semi-coke state. The coke is not yet ripe;

4. In the production of crucible coke, a solid briquette is added directly above the coal sample, or fine sand is laid first and then the briquette is placed to ensure the bulk density of coal powder. During the coking process, the volatile matter is wrapped in the colloid, which makes the center and bottom of the crucible coke block form a large sponge-like hole

In short, coking is carried out according to the above-mentioned crucible coke production method, and single coal and coal blending coking cannot be carried out.