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coal     
相关语句
  
    Studies on Co-firing of Coal and Refuse Derived Fuel (RDF) in Fluidized Bed Combustor and on the Removal of Acid Gases
    与垃圾衍生燃料(RDF)的流化床混烧研究及其酸性气体的脱除
短句来源
    The Experimental and Theory Study of Characteristics about Desurfulrization and NO Release under O_2/CO_2 Coal Combustion
    O_2/CO_2粉燃烧脱硫及NO生成特性实验和理论研究
短句来源
    A New Process of Coking and Gasification of Powder Coal by Rapid Heating(Ⅰ)
    粉快速焦化气化新工艺的研究(Ⅰ)
短句来源
    EVALUATION OF THE COAL AS REDUCING AGENT IN DIRECT REDUCTION
    直接还原用的评价
短句来源
    Acid Rain and the Utilization of Coal Resource
    酸雨与资源的利用
短句来源
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  煤炭
    Several Factors' Influence on Microbial Desulfurization of Coal
    影响煤炭微生物脱硫因素的研究
短句来源
    The Air Cleaning and SO_2 Emission Rights for Electricity Generation from Coal in America
    美国煤炭发电的大气净化问题和SO_2排放权
短句来源
    Study on microbial desulfurization of coal
    煤炭微生物脱硫的研究
短句来源
    THE COUNTERMEASURES OF ENVIRONMENTAL CONTROL IN COAL MINING, PROCESSING AND UTILIZATION
    煤炭开采、加工与利用中的环境保护对策
短句来源
    Development and Applying Vistas of Micro-desulfur Technology for Coal
    煤炭微生物脱硫技术的开发及应用前景
短句来源
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  燃煤
    Study and Application on an Integrative Device for Dust Removal and Desulphurization of the Industrial Coal Kiln and Furnace
    燃煤工业窑炉烟气脱硫除尘一体化装置的研究和应用
短句来源
    Mechanism Study on Multi-Pollution Control Simultaneously during Coal Combustion and Direct Numerical Simulation of Reaction Jets Flow
    燃煤多种污染物一体化协同脱除机理及反应射流直接数值模拟DNS的研究
短句来源
    Determination of trace element contents in coal and fly ash of the power plants by two-standard neutron activation analysis
    双标准中子活化法分析电厂燃煤和煤灰中痕量元素含量
短句来源
    SOME IDEAS OF CONTROLLING THE POLLUTION IN COAL—BURNING POWER GENERATION IN CHINA
    控制中国燃煤发电污染的构想
短句来源
    Analysis on Existing Status of Fuel Coal and Measures of Pollution Management in Shanghai
    上海市燃煤的现状分析及其污染管理措施
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  煤矿
    The Application of Emulsification Technology in Coal Mine
    乳化技术在煤矿中的应用
短句来源
    STUDIES ON THE BACKGROUND VALUES OF SOME ELEMENTS (Cu, Pb, Zn., Cd and Hg) IN THE SOIL-PLANT SYSTEM OF CHINA'S ZGR OPEN AIR COAL MINE
    我国大型ZGR露天煤矿土壤—植物系统Cu、Pb、Zn、Cd、Hg元素背景值研究
短句来源
    Effect of Dust Pollution from Opencut Coal.Mining on Farmland Ecological Environment
    煤矿露采粉尘污染对农田生态环境的影响
短句来源
    Content Distribution of Trace Elements in Coal from Shanxi Province
    山西省煤矿样中微量元素的含量分布
短句来源
    Integrated development of Coal Mine Subsidence Area in HuaiBei Plain
    淮北平原煤矿塌陷区的综合开发
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      coal
    An extra-thick high-quality brown coal was found to have accumulated in the Xianfeng basin in Yunnan Province, China.
          
    Permo-Carboniferous coal measures in the Qinshui basin: Lithofacies paleogeography and its control on coal accumulation
          
    The Taiyuan Formation is composed of limestones, aluminous mudstones, siltstones, silty mudstones, sandstones, and mineable coal seams, with a total thickness varying from 44.9 m to 193.48 m.
          
    The coal seams have a thickness ranging between 0.10 and 16.89 m, averaging 7.19 m.
          
    Coal is relatively thick in the northern part and the southeastern corner.
          
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    In order to lower the consumption of acid and alkali and to simplify the process for refining low temperature coal tar fractions, the phenolate extraction process was studied.

    为了降低焦油加工时的酸硷耗量、简化加工过程,进行了酚钠抽提方案之研究。 试验中考察了硷液浓度及焦油馏份中的酚类含量对抽提效果之影响;逆流抽提时之最宜硷用量;饱和酚钠液稀释以析出溶解的酚类时所需之水量;以及抽余油及粗酚的物理化学性质等。 试验结果表明:酚钠抽提法不但耗硷量甚少(对每百公斤酚类只需苛性钠10—15公斤,而一般硷洗法则需用40—45公斤)。而且抽余油不需经酸洗或氧化精制等过程,即可做轻柴油使用,其氧化安定性较好。此外酚钠抽提有显著的脱硫及脱氮作用。 抽余油之发动机试验证明:做为轻柴油其使用性能在任何方面均不逊于其他简易加工方法所制得之产品。

    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...

    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。

    The Zhalainuoer brown coal can be readily oxidized to give high yields of regenerated humic acids either by dilute nitric acid or by hot air in a fluidized reactor. In the case of using dilute nitric acid as the oxidizing agent, the optimum conditions under which high yield of humic acids has been obtained with low consumption of nitric acid are found as follows: temperature 50℃, reaction time 1 hour, nitric acid concentration 10%, and the ratio of HNO_3 added (as 100%) to coal 0.5:1 (by weight)....

    The Zhalainuoer brown coal can be readily oxidized to give high yields of regenerated humic acids either by dilute nitric acid or by hot air in a fluidized reactor. In the case of using dilute nitric acid as the oxidizing agent, the optimum conditions under which high yield of humic acids has been obtained with low consumption of nitric acid are found as follows: temperature 50℃, reaction time 1 hour, nitric acid concentration 10%, and the ratio of HNO_3 added (as 100%) to coal 0.5:1 (by weight). When using hot air as the oxidizing agent, a fluidized reactor is used to accelerate the oxidation rate and to maintain uniform reaction temperature. It is found that the yield of oxidized coal which contains 90% (m.a.f.) humic acids after 24 hours of oxidation at 220℃ is about 75%.Some properties of the oxidized coals have been studied. The oxidized coals have been ammoniated by dilute ammonia liquor or NH_3-air mixture, thus giving a water soluble multi-effect fertilizer of organic origin. The ammoniated products can also be used as an effective surface active agent for ceramic muds.

    札赉诺尔褐煤易被稀硝酸或热空气氧化,并能得到高收率的再生腐殖酸.用硝酸氧化的最佳条件为:温度50℃,反应时间1小时,硝酸浓度10%,硝酸添加量:煤=0.5:1;用热空气在沸腾层内氧化24小时,温度为220℃,可得到75%收率的氧化煤,含腐殖酸90%(无水无灰基).对氧化煤的若干性质作了分析.氧化煤可用稀氨水或氨-空气混合物氨化.其氨化产物为多效的水溶性有机化学肥料,亦为一有效的陶瓷泥浆处理剂.

     
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