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煤气
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  gas
    To prepar the town gas by catalytic gasification of Da-Tong coal under elevated pressure Ⅰ. The characteristics of catalytic gasification of Da-Tong coal and its coke
    煤加压催化气化研制城市煤气——Ⅰ.大同煤和煤焦的催化气化特性
短句来源
    The Blowing Strength to Influence on Gasifying layer in the Gas producer
    送风强度对煤气发生炉气化层的影响
短句来源
    New Processes on Desulfurization, Decyanation and Deaminization for Coke Oven Gas
    焦炉煤气脱硫脱氰脱氨新工艺
短句来源
    STUDY OF RATIONALIZATION OF GAS CALORIFIC VALUE OF IRON AND STEEL INDUSTRY
    钢铁企业煤气热值合理化研究
短句来源
    Research on Lignite Gasification in 3Д-13 Gas Producer
    关于褐煤在3АД-13型煤气发生炉中的气化研究
短句来源
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  coal gas
    IMPROVEMENTS ON PARTIAL STRUCTURE OF COAL GAS PRODUCER TYPE Φ3mД
    Φ3MД型煤气发生炉局部结构的改进
短句来源
    The Application and Design of 150kt/a Coal Gas Debydration from Calcium Magnesium Blast Furnace.
    15万t/a钙镁高炉煤气脱水的应用及设计
短句来源
    COAL GAS DESULFURIZATION AT HIGH TEMPERATURE Ⅰ.SULFIDATION AND KINETICS OF Fe/Zn BASED SORBENTS
    高温煤气脱硫 Ⅰ.铁锌基脱硫剂脱硫工艺条件及硫化动力学
短句来源
    EXPERIMENT AND TECHNOLOGICAL DESIGN OF TAR-ASH SEPARATION SYSTEM FOR COAL GAS PLANT
    煤气站焦油灰渣分离系统的试验与工艺设计
短句来源
    COAL GAS DESULFURIZATION AT HIGH TEMPERATURE Ⅱ REGENERATION CONDITIONS OF Fe/Zn BASED SORBENTS
    高温煤气脱硫 Ⅱ.铁锌基脱硫剂再生工艺条件的研究
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  coalgas
    IMPROVEMENTS ON PARTIAL STRUCTURE OF COAL GAS PRODUCER TYPE Φ3mД
    Φ3MД型煤气发生炉局部结构的改进
短句来源
    The Application and Design of 150kt/a Coal Gas Debydration from Calcium Magnesium Blast Furnace.
    15万t/a钙镁高炉煤气脱水的应用及设计
短句来源
    COAL GAS DESULFURIZATION AT HIGH TEMPERATURE Ⅰ.SULFIDATION AND KINETICS OF Fe/Zn BASED SORBENTS
    高温煤气脱硫 Ⅰ.铁锌基脱硫剂脱硫工艺条件及硫化动力学
短句来源
    EXPERIMENT AND TECHNOLOGICAL DESIGN OF TAR-ASH SEPARATION SYSTEM FOR COAL GAS PLANT
    煤气站焦油灰渣分离系统的试验与工艺设计
短句来源
    COAL GAS DESULFURIZATION AT HIGH TEMPERATURE Ⅱ REGENERATION CONDITIONS OF Fe/Zn BASED SORBENTS
    高温煤气脱硫 Ⅱ.铁锌基脱硫剂再生工艺条件的研究
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  “煤气”译为未确定词的双语例句
    Experiment Study and Modelling on Coal Gasification in Atmosphere Circulating Fluidized Bed
    常压循环流化床煤气化试验与模型研究
短句来源
    Application of System for Continuously Analyzing Top-gas
    炉顶煤气连续分析系统的应用
短句来源
    Evaluation of Coal Char Reactivity under Pressure
    加压下煤气化及燃烧特性评价(一)——加压下煤炭反应性的评定
短句来源
    Evaluation on Clinkering Property of Coal under Pressure
    加压下煤气化及燃烧特性的评价(三)——加压下煤炭结渣性的测定
短句来源
    ANALYSIS OF KEY TECHNICAL PROBLEMS OF THE φ2.8M PRESSURIZED GASIFIER
    φ2.8米加压煤气化炉关键技术问题初析
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  gas
Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics
      
The explicit solution to Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics is given.
      
Photocatalytic Oxidation of Aniline in the Gas Phase Using Porous TiO2 Thin Films
      
The gas-phase photocatalytic oxidation of aniline on a new kind of porous nano-TiO2 composite films is investigated.
      
Acetone solution-casting films of poly(methylmethacrylate) were analyzed by differential scanning calorimetry and pyrolysis gas chromatography-mass spectroscopy under natural evaporation and ultrasonic vibration, respectively.
      
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  coal gas
The effects of coal gasifying rate, pre-heating air temperature, and coal gas temperature on the performances of the power system are studied.
      
Explosion characteristics of coal gas under various initial temperatures and pressures
      
Explosion limits data are essential for a quantitative risk assessment of explosion hazard associated with the use of coal gas.
      
The present work is to investigate the influence of various initial temperatures and pressures on explosion characteristics of coal gas/air mixture.
      
The explosion limits and the minimum ignition energy of coal gas/air mixture are obtained experimentally at various temperatures ranging from 20 to 80°C and pressures ranging from 0.1 to 0.2?MPa.
      
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  coalgas
Undersaturated coals tend to produce water for greater peri ods prior to the beginning of coalgas production.
      


The possibility of using granular nitrided fused iron catalyst for Fischer-Tropsch synthesis at high space velocities is investigated. It is observed that the activity of granular catalyst decreases seriously with time when used at low reaction temperatures,while the use of relatively high reaction temperatures stimulates carbon formation on the catalyst,resulting in the clogging up of the reactor.These phenomena differ from what occurs on a powdered catalyst. The effect of the operating variables and methods...

The possibility of using granular nitrided fused iron catalyst for Fischer-Tropsch synthesis at high space velocities is investigated. It is observed that the activity of granular catalyst decreases seriously with time when used at low reaction temperatures,while the use of relatively high reaction temperatures stimulates carbon formation on the catalyst,resulting in the clogging up of the reactor.These phenomena differ from what occurs on a powdered catalyst. The effect of the operating variables and methods of preparation of granules on the durability of catalyst are thoroughly studied.It is evident that the decrease of the catalyst activity are mainly due to the gradual plugging up of the pore volume of the catalyst by the high-boiling-point products.This conclusion is supported by the argument that diffusion within the pores steps in as the rate-controlling step during the course of synthesis.It is pointed out that the durability of granular fused iron catalyst may be considerably improved through the use of a catalyst of more porous structure.

为进行高速固定床以水煤气为原料的合成,研究了颗粒熔铁催化剂.发现随颗粒加大,在低温和压力下合成时活性无法维持;在高温合成时,则又发现生炭粉碎而很快使床层堵塞.为了使催化剂维持足够的寿命,设法消除低温合成过程中的障碍是重要研究方向之一.试验了温度、压力、空速、再生方法和不同催化剂组成及不同成型方法等对活性维持的影响,认为:在高空速下,氮化熔铁颗粒催化剂活性随时间下降主要是由于生成的重质产物堵塞了颗粒孔隙所引起;在颗粒孔隙堵塞同时,反应速度控制步骤由原为化学反应速度控制转为内扩散控制的慢反应.从而指明,解决熔铁剂活性维持问题的关键在于改善孔隙结构.

Four types of catalyst were prepared and evaluated. Both the Mo-Co-Al and "402" type catalyst were found to possess high activity and selectivity. The "402" catalyst was chosen for the subsequent investigations. Effect of process variables, such as temperature, space velocity and hydrogen partial pressure were studied. At a total pressure of 20 arm. with pure hydrogen, as the reaction temperature varied from 320—400℃, the sulfur reduction was found increased with temperature. Within the above mentioned experimental...

Four types of catalyst were prepared and evaluated. Both the Mo-Co-Al and "402" type catalyst were found to possess high activity and selectivity. The "402" catalyst was chosen for the subsequent investigations. Effect of process variables, such as temperature, space velocity and hydrogen partial pressure were studied. At a total pressure of 20 arm. with pure hydrogen, as the reaction temperature varied from 320—400℃, the sulfur reduction was found increased with temperature. Within the above mentioned experimental conditions, desulfurization of crude benzole could be represented as a first order reaction. Bromine number reduction showed the same tendency as sulfur removal with regard to temperature and space velocity. Under 20 arm., 380℃, LHSV 3.0, the yield of raffinate attained 98% (wt.); hydrogen consumption was 0.4% (wt.). Bromine number of crude benzole was reduced from 10.6 to 0.5; sulfur reduction reached 97%. The benzene, toluene and xylenes obtained by fractionation were of "pure grade" quality. Thiophene content in benzene was less than 15 ppm. The recovery of benzene and toluene, found by analysis with fractionation and chromatography methods, was amounted to 98.6% and 105.5% respectively.

用低压氢气、焦炉气或煤气的加氫法代替硫酸法来精制粗苯,可以提高精制率和产品貭量(特別是滿足合成用苯所需的低硫規格)。制备并評阶了四种类型催化剂,以Mo-Co-Al和402的活性和选择性为最好,402催化剂并經多次驗証,其較长期运轉的結果也甚为良好。考察了操作变数(温度,空速,氫分压)对过程的影响。在試驗溫度范围內(320—400°),脫硫效率随溫度上升而提高。在考察的空速范围內,未轉化硫的浓度对数值和假反应时間有直綫关系。粗苯朌硫可以用一級反应表示。溫度和反应时间对溴价变化的影响和对硫一样有一致的趋向。在合适的条件下获得的精制結果为过程油收率达98%,氫消耗0.4%,精制油溴价自原料10.6降至0.5,脱硫率97%。分餾后所得产品的貭量不但都能符合冶金部对純品要求的規格,而且苯中噻吩硫已降至15ppm以下。从分餾及色譜分析結果計算了苯类囘收率,苯为98.6%,甲苯105.5%,由109.5°前餾分中主要飽和烃組成估计,产品分餾不会有很大困难。

~~

进行了撫順残植煤的化学—工艺性质的評述。研究了残植煤各岩相組分(鏡煤类物质、孢子残体、树脂体)的一次焦油的組成;特别详细地采用紅外光譜和色层分离方法研究了树脂体焦油。撫順残植煤是很好的低溫干餾的原料。在热载体並流、多次往复循环实驗炉中进行的低溫干餾結果表明,可从残植煤得到较高收率的轻质化学产品和大量宝貴的煤气。采用色层分离法系統研究了撫順残植煤焦油的中性油的族組成。首次研究了低溫焦油中丙酮可溶性酚的組成。結果表明,在氮气流中进行甲基化,用色层法分离酚甲醚,並随后用化学、物理方法鑑定各組分,可以认为是比較好的一种研究重餾分混合酚的方法。

 
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