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解决粕自燃炭化方法
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作者 叶祥仁 《四川粮油科技》 1998年第1期19-20,共2页
从输送设备、物料、方法、环境、人员五个方面分析了粕自燃炭化的原因,并针对性地提出了解决方法。
关键词 自燃炭化 植物油 油脂
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Experiment study of optimization on prediction index gases of coal spontaneous combustion 被引量:4
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作者 NIU Hui-yong 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第9期2321-2328,共8页
The coal of Anyuan Mine has the characteristic of easy spontaneous combustion. Conventional method is difficult to predict it. Coal samples from this mine were tested in laboratory. The data obtained from laboratory d... The coal of Anyuan Mine has the characteristic of easy spontaneous combustion. Conventional method is difficult to predict it. Coal samples from this mine were tested in laboratory. The data obtained from laboratory determination were initialized for the value which was defined as "K". The ratio of each index gas and value of "K", and the ratio of combination index gases and value of "K", were analyzed simultaneously. The research results show that for this coal mine, if there is carbon monoxide in the gas sample, the phenomenon of oxidation and temperature rising for coal exists in this mine; if there is C_2H_4 in the gas sample, the temperature of coal perhaps exceeds 130 °C. If the coal temperature is between 35 °C and 130 °C, prediction and forecast for coal spontaneous combustion depend on the value of Φ(CO)/K mainly; if the temperature of coal is between 130 °C and 300 °C, prediction and forecast for coal spontaneous combustion depend on the value of Φ(C_2H_6)/Φ(C_2H_2) and Φ(C_2H_6)/K. The research results provide experimental basis for the prediction of coal spontaneous combustion in Anyuan coal mine, and have better guidance on safe production of this coal mine. 展开更多
关键词 COAL spontaneous combustion index gases PREDICTION INITIALIZATION
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Mechanism study of organic antioxidant and inorganic salt on suppressing coal oxidation 被引量:4
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作者 于水军 余明高 +1 位作者 贾海林 左秋玲 《Journal of Coal Science & Engineering(China)》 2007年第1期65-68,共4页
The advantages and disadvantages of organic antioxidant and inorganic salt on suppressing coal oxidation were analyzed on the basis of the theory that coal oxidation mechanisms can be attributed to the free radical ch... The advantages and disadvantages of organic antioxidant and inorganic salt on suppressing coal oxidation were analyzed on the basis of the theory that coal oxidation mechanisms can be attributed to the free radical chain-type reaction mechanism. The inhibition curves on suppressing coal oxidation of the different type and different concentration of organic antioxidant and inorganic salt were given through experimental study and data processing. Then some conclusions can be gained from the experimental study combining with theoretical analysis. First the inhibition mechanism of the organic antioxidant and inorganic salt is different. The former is that the chemical action is the dominant position. It can be called as the chain termination theory because the free radical is captured during coal oxidation. And the later is that the physical effect is the dominant position. It can be called as the decreasing-temperature theory because the liquid membrane which was formed by the inorganic salt can make coal body be the state of wetness and prevent oxygen from coal surface. Second the inhibition effect of the organic antioxidant is higher than the inorganic salt in the later period. But it is lower in the early period. 展开更多
关键词 coal oxidation organic antioxidant inorganic salt inhibition mechanism
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Critical Value of CO of Forecasting Coal Spontaneous Combustion 被引量:7
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作者 何启林 戴广龙 王德明 《Journal of China University of Mining and Technology》 2003年第2期121-125,共5页
CO has been used widely in the production process of colliery as an index gas to predict spontaneous combustion of coal. But in some collieries there are CO gas in the upper corner of the face all the times, sometime ... CO has been used widely in the production process of colliery as an index gas to predict spontaneous combustion of coal. But in some collieries there are CO gas in the upper corner of the face all the times, sometime CO gas even exceeds the regulated critical index. This phenomenon is much more obvious in the fully-mechanized longwall face and fully-mechanized longwall and top-coal caving face. Although many measures of fire-proof and fire-extinguishing have been adopted, the flowing amount of CO gas can be only decreasd, but can not be eliminated completely. Using the different kinds of coal, the experiment of coal oxidation was made at the low temperature. The experiment indicates that some kinds of coal can produce CO under the condition of normal temperature oxidation, sometime the CO consistency is very high, and the intension of CO can be decreased with oxidation time prolonging. Selecting rational critical value of CO is the kev to predicting spontaneous combustion of coal correctly and reliably. The problem of selecting retional critical value of CO was studied. Finally, the amount of CO gas released by different kinds of coal was obtained under normal temperature condition. 展开更多
关键词 coal spontaneous combustion index gas t critical value
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A new theory of chemical method to prevent spontaneous combustion of coal
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作者 LU Wei 《Journal of Coal Science & Engineering(China)》 2009年第2期220-224,共5页
In order to prevent spontaneous combustion of coal from the source,based onthe study on the mechanism of spontaneous combustion of coal,especially the process ofcoal to self-ignite and different activate structures ha... In order to prevent spontaneous combustion of coal from the source,based onthe study on the mechanism of spontaneous combustion of coal,especially the process ofcoal to self-ignite and different activate structures have different activation for oxidization,the new theory and mechanism with chemical inhibition that can change the tendency ofspontaneous combustion of coal and let the activate structures deactivate were broughtforward.Therefore,coal was not self-ignited under a certain temperature when beingchemically inhibited. 展开更多
关键词 spontaneous combustion of coal physical inhibition chemical inhibition active structures
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