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coal-gas     
相关语句
  煤层气
     Study on Developing Synthesis Oil Industry with Coal-Gas in Shanxi Province
     利用煤层气发展山西合成油工业探讨
短句来源
     The author concisely introduced the coal-gas composition and its distribution. Then with electroscan microscope and by press-mercry experiment and absorption experiment,the pore character and absorbtive behavior of coal were studied and analysed respectively. In the end,according to the underground drawn experiment and using a series of indexes,a conclusion is obtained that the 4-2 # coalbed is a reluctantly drawnable layer,and the roof-sandstone is a drawnable bed.
     介绍了陈家山井田煤层气的成分及分布规律,利用扫描电镜、压汞实验、吸附实验等手段,分别对煤层的孔隙特征及吸附性能进行了分析和研究- 根据井下抽放实验,得知4 - 2 # 煤层为勉强可抽放层,煤层顶板砂岩为可抽放层的结论- 图5 ,表2 ,参6-
短句来源
     Additionally,the long-ter-med erosion of coal series covering s trata(up to 160Ma )induced the large emission of the thermo-genesis coal -gas in the area.
     然而长达160Ma的盖层剥蚀导致了本区热成因煤层气的大量逸散。
短句来源
  煤层瓦斯
     These results are useful for studying gas drainage in the coal seam and for Prevention of coal-gas outburst in mines.
     这对于研究矿井煤层瓦斯抽放和预防煤与瓦斯突出等问题具有一定的参考价值。
短句来源
     icrostructure of coal with different coalification ranks and structural damages are studied by use of mirostructure analyser X RD and FTIR The results are raluable for the study of coal-gas outburst and development.
     对不同煤化度和不同构造破坏煤层的煤样进行微观结构分析。 本文的研究结果对于煤与瓦斯突出及煤层瓦斯开发具有重要的参考价值。
短句来源
     From the practical condition of coal mine, the authors provide a method of grey-factor related analysis, using this method makes a quantitative analysis to the affecting element of coal-gas. It is pointed out that the ash and the depth of coal strata are the main factor affecting the distribution of coal-gas.
     本文从煤矿的实际出发,提出了灰色权重关联分析法,并利用此方法对影响陈家山矿煤层瓦斯分布的地质因素进行了定量分析,指出煤的灰分和煤层的埋藏条件是影响该矿瓦斯分布的主要因素。
短句来源
  煤与瓦斯
     The high-gas and low-permeability thick seams were studied, where exist some danger of coal-gas outburst and high gas inflow. Two kinds of exploiting models of coal-gas and the principles were proposed, with which some program has been made in practice.
     论述了高瓦斯低透气性有煤与瓦斯突出危险特厚煤层和上覆采动断裂带有高瓦斯涌出的特厚煤层两种煤与瓦斯高产高效卸压共采模式、原理及其实践所取得的丰硕成果.
短句来源
  煤制气
     Combustion of Coal-gas,a New Way to Upgrade Coal-Fuelled Boilers
     机械炉排燃煤锅炉改造燃烧方式的新途径——煤制气燃烧方式的应用
短句来源
     The combustion of coal-gas, an environment friendly new clean way of combustion, and its application in upgrading coal-fuelled boilers are di scussed in detail.
     介绍了一种符合环保要求的新型洁净燃烧方式——煤制气的燃烧方式及其应用在机械炉排燃煤锅炉改造上取得的效果,为气化燃烧开辟了新的途径。
短句来源

 

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      coal-gas
    Due to the complexity of the counter-current coal-gas process used, a gasifier dissection was undertaken on one of the Sasol gasifiers.
          
    This paper discribes a one-dimensional flow model to explain the basic mechanism of coal-gas outbursts.
          
    One-dimensional flow model for coal-gas outbursts and initiation criterion
          


    Experiments were carried out in two separate sieve-plate towers with three and five plates each respectively. Hydrogen sulfide in coal gas. was found highly absorbed in those towers by lime suspension in the range of relatively high gas velocity with the suspension reaching stage of foaming. Results show that both the average height of foam (H) and the mass transfer coefficient (K) are proportional to gas velocity in tower (W) and relative quantity of lime suspension (1), expressing in liters per cubic meter...

    Experiments were carried out in two separate sieve-plate towers with three and five plates each respectively. Hydrogen sulfide in coal gas. was found highly absorbed in those towers by lime suspension in the range of relatively high gas velocity with the suspension reaching stage of foaming. Results show that both the average height of foam (H) and the mass transfer coefficient (K) are proportional to gas velocity in tower (W) and relative quantity of lime suspension (1), expressing in liters per cubic meter of coal gas, in definite mathematical relationship. Under definite conditions, absorption of H_2S reaches over 90%. Results also show in the absorption process, CO_2 of coal gas is being only slightly absorbed. Comparing with Thylox and iron-soda processes, the cost for sulfur removal of coal gas in each case is approximately the same. However, the present process actually has distinct advantages over the others in low capital cost, requiring less steel, process being simpler and absorbent being easily obtainable. The disadvantages pertaining to the present process are lime suspension being not fully reacted and utilization of the used suspension being difficult. The present process is being recommended to be applicable to sulfur removal of coal gas from generators of medium size and also in preliminary stage of sulfur removal of synthesis gas.

    以便宜易得的石灰乳为脫硫剂。采用泡沫法,在装有五块和三块篩板塔中,对煤气进行了强化脱硫試驗。由試驗結果得出塔板上泡沫的平均高度H以及传貭系数K分別与煤气空塔流速W和石灰乳比用量l(每米~3煤气所用的石灰乳升数)相互关系的数学公式。在一定条件下,脫硫效率可达90%以上,試驗結果还指出脫硫过程中CO_2被吸收的量很小。本法在工业上应用时,如与砷碱法或鉄碱法相比,成本不相上下,但是本法具有基建投資低,鋼材用量少、工艺流程簡单和原料易得等优点,缺点是石灰乳的利用率不高,用过的石灰乳的处理較困难。对于中小型企业的燃料煤气的脫硫以及合成煤气的第一段脱硫,本法值得推广使用。

    A new and prospective process for coal carbonization has been described. Radiant heat is used as the heating source to achieve high speed thermal decomposition of coal at high temperature.Products obtained by this process are more valuable than that of the ordinary carbonization. As for example, when brown coals from Shulan are thermally decomposed in this radiant-type oven at 850℃, the following products are obtained, viz. coal gas (heating value 4000 kcal/M~3), 570 M~3/t. coal (d.a.f.); unsaturated hydrocarbons...

    A new and prospective process for coal carbonization has been described. Radiant heat is used as the heating source to achieve high speed thermal decomposition of coal at high temperature.Products obtained by this process are more valuable than that of the ordinary carbonization. As for example, when brown coals from Shulan are thermally decomposed in this radiant-type oven at 850℃, the following products are obtained, viz. coal gas (heating value 4000 kcal/M~3), 570 M~3/t. coal (d.a.f.); unsaturated hydrocarbons in gas, 30 M~3/t. coal (d.a.f.); crude benzol 2.7%, and coal tar 8% of coal (d.a.f.). In the crude benzol there are more than 90% aromatics, in which the ratio of benzene and toluene is 3:1. The conversion of coal into volatile matter is 8% more than the volatile matter in the coal used, and in the coke breeze the volatile matter remained is still 10% or more. The reactivity of the coke breeze is very high and may be used for gasification or as fuel.When the stream of coal particles passes through the radiant-type oven, its temperature can be raised promptly to about 900℃ in a time within two seconds. For every M~2 of heating surface, 100 kg of coal particles may be treated per one hour in this type of oven.

    本文实验结果证明,利用辐射加热进行煤的高温高速热分解,是一项有发展前途的新工艺。它能显著地提高煤热分解化学产品的质量与收率.例如舒兰褐煤在辐射炉中850℃下热分解,产品煤气(4000大卡/米~3)为570米~3/吨煤(可燃基)、烯烃为30米~3/吨煤、粗苯为煤的2.7%、焦油为煤的8%.粗苯中含芳烃90%以上,其中苯与甲苯比为3∶1.这些产品比高温炼焦的化学产品都有成倍的增长.煤的热分解转化率较原煤的V~Γ尚高出8%,焦渣的V~Γ仍有10%,故热分解的挥发产物多、焦渣少.焦渣的活性很强,可作气化原料或燃料.煤料在辐射炉中的升温速度最高可达到500℃/秒.辐射炉生产能力高,每平方米的加热面积约可处理煤料100公斤/时。

    An optimum method for cutting steel plate for water-coal-gas tubes is designedin this paper by using the linear programming theory. The computer program isathached to it.

    本文应用线性规划理论求出水煤气管下料问题的最优方案并附有相应的上机程序。

     
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