Method of testing coal spontaneous combustion tendentiousness by water bath heat insulation

A coal spontaneous combustion and tendency technology, applied in the direction of material thermal development, to achieve the effect of unified classification standard, simple principle and easy operation

Inactive Publication Date: 2013-07-24
HUNAN SUNDY SCI & TECH DEV
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Problems solved by technology

Therefore, it is necessary to carry out a spontaneous combustion test to the coal sample, and there is no better method for completing the spontaneous combustion test in the prior art

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  • Method of testing coal spontaneous combustion tendentiousness by water bath heat insulation

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] like figure 1 Shown, the method for water-bath adiabatic test coal spontaneous combustion tendency of the present invention, its flow process is:

[0016] (1) Collect coal samples. In a preferred embodiment, freshly mined coal samples should be taken to ensure that the initial conditions of each coal sample remain the same to the greatest extent possible, and also to ensure that the coal samples are not considered oxidized.

[0017] (2) Sample preparation and drying. The conventional sample preparation method is used to crush the coal samples successively, so that the particle size of each coal sample can be similar. The coal sample obtained from the sample preparation is dried under an inert gas environment to prevent the coal sample from being oxidized during the drying process.

[0018] (3) stake out. The dried coal sam...

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Abstract

The invention discloses a method of testing coal spontaneous combustion tendentiousness by water bath heat insulation. The method comprises the following steps of: preheating a coal sample to be detected to be at first designed temperature T1 and placing the heated coal sample to be detected in a reactor in water bath or directly heating the coal sample to be detected in the reactor, introducing oxygen in the reactor, rising the temperature of the coal sample to be detected under the oxygen action, and rising the temperature of the water bath along with the rising of the temperature of the coal sample so as to enable the spontaneous combustion of the coal sample to be positioned in a heat insulation environment; and when the temperature of the coal sample to be detected achieves second designed temperature T2, stopping filling the oxygen, recording the time from the first designed temperature T1 to the second designed temperature T2 and temperature so as to form a coal sample result of the coal sample to be detected with the temperatures. The method provided by the invention has the advantages of simple principle, easiness of operation, high test precision, good test reliability and the like.

Description

technical field [0001] The invention mainly relates to the field of coal sample detection equipment, in particular to a coal sample spontaneous combustion test method adopting a water bath adiabatic design. Background technique [0002] Spontaneous combustion may occur in coal mines or during storage when the rate at which coal generates heat exceeds the rate at which it can be dissipated. In order to avoid spontaneous combustion of coal, coal heat generation should be minimized and heat dissipation should be maximized in coal piles. This principle should be applied to all coal mines, handling, stacking and transportation of coal. Therefore, it is necessary to carry out a spontaneous combustion test on the coal sample, and there is no better method for completing the spontaneous combustion test in the prior art. Contents of the invention [0003] The technical problem to be solved by the present invention lies in: aiming at the technical problem existing in the prior art,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
Inventor 朱先德李冬军吴汉炯方伟王芹
Owner HUNAN SUNDY SCI & TECH DEV
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