Method and device for testing longitudinal variation performance of pyrolysis process of production coal

A technology of longitudinal change and coal pyrolysis, applied in the direction of material thermal expansion coefficient, etc., can solve the problem of losing control of the temperature system, and achieve the effects of ensuring effective forward movement, reducing difficult coke pushing process, and effective coal blending

Active Publication Date: 2020-01-07
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In turn, the control of the temperature system in the coking process, the control of the coke quality in the process of coal pyrolysis ...

Method used

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  • Method and device for testing longitudinal variation performance of pyrolysis process of production coal

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Will A d content of 7%, V d Put 100kg of 30% test coal samples with 83% particle size less than 3mm into a 100kg top-loaded test coke oven, adopt the natural falling method from the coke oven coal charging port, and the natural bulk density of the furnace coal is about 820kg / m 3 . After the coal sample is loaded, use a flat coal rod to spread the loaded coal from the coal charging port on the upper part of the coke oven, and then install a longitudinal change detection device for production coal at the coal charging port on the top of the coke oven. The roughness Ra of the steel plate surface in contact with coal is 2.6. The furnace coal is heated at a heating rate of 2°C / min, and the heating is stopped when the center temperature of the coke cake reaches 1000°C. Record the measurement results, and the maximum shrinkage rate in the longitudinal direction is 54%.

Embodiment 2

[0044] Will A d content of 9%, V d 90kg of 28% test coal samples with 85% particle size less than 3mm were put into a 100kg top-loaded test coke oven, and the material was naturally dropped from the coke oven coal charging port, and the natural bulk density of the furnace coal was about 825kg / m 3 . After the coal sample is loaded, use a flat coal rod to spread the loaded coal from the coal charging port on the upper part of the coke oven, and then install a longitudinal change detection device for production coal at the coal charging port on the top of the coke oven. The roughness Ra of the steel plate surface in contact with coal is 2.7. The furnace coal is heated at a heating rate of 3°C / min, and the heating is stopped when the center temperature of the coke cake reaches 1020°C. Record the measurement results, and the maximum shrinkage rate in the longitudinal direction is 38%.

Embodiment 3

[0046] Will A d content is 10%, V d 80kg of 86% test coal samples with a particle size of less than 3mm at a content of 28% were put into a 100kg top-loaded test coke oven, and the material was naturally dropped from the coke oven coal charging port, and the natural bulk density of the furnace coal was about 830kg / m 3 . After the coal sample is loaded, use a flat coal rod to spread the loaded coal from the coal charging port on the upper part of the coke oven, and then install a longitudinal change detection device for production coal at the coal charging port on the top of the coke oven. The roughness Ra of the steel plate surface in contact with coal is 2.8. The furnace coal is heated at a heating rate of 4°C / min, and the heating is stopped when the center temperature of the coke cake reaches 1050°C. The measurement results were recorded, and the maximum shrinkage rate in the longitudinal direction was tested to be 41%.

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Abstract

The invention discloses a method and device for testing the longitudinal variation performance of a pyrolysis process for production coal. The method comprises the steps of (1) loading coal samples ofwhich the ash content is 7-12% and the volatile content is 27-30% into a coke oven according to the test volume 70-90% of the coke oven, wherein the natural stacking density during loading is 820-830kg/m<3> and the proportion of the coal samples of which the particle sizes are smaller than 3mm is 83-88%; (2) paving the loaded coal; (3) arranging a thermal insulation plug at a coal port at the topof the coke oven, wherein a vertical guide hole is formed in the thermal insulation plug; a guide push rod is arranged in the guide hole; the lower part of the guide push rod is connected with a touch panel which is placed on the top paved surfaces of the coal samples in the coke oven and is in surface contact with the paved surfaces; and the upper part of the guide push rod is connected with aninduction recording device which can convert vertical displacement or a displacement amplitude of the guide push rod into an electric signal and output the electric signal to a readable medium; and (4) heating charged coal until the central temperature of a coke cake reaches 1,000-1050 DEG C and analyzing data recorded by the induction recording device.

Description

technical field [0001] The invention belongs to the technical field of coking production coal and coking coal quality testing, and in particular relates to a method and a device for testing the longitudinal variation performance of production coal pyrolysis process. Background technique [0002] my country has abundant coal resources, and in the process of energy utilization, the dependence on coal is relatively large. For the processing and utilization of coal, coal workers have carried out many aspects of work. The most widely used method is to use coal to carry out high-temperature dry distillation to produce coke for blast furnace ironmaking production, such as the relevant content disclosed in Chinese patent documents with publication numbers CN1171807A and CN1465656A. In addition, due to the lack of oil resources in our country, more than 40% of our country depends on foreign countries. In order to alleviate the lack of oil, many scientific researchers have carried ou...

Claims

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Application Information

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IPC IPC(8): G01N25/16
CPCG01N25/16Y02P20/129
Inventor 王玉明毛晓明胡德生钱晖徐万仁
Owner BAOSHAN IRON & STEEL CO LTD
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