查询词典 gas coal

Low-boiling phenols in low-temperature coal tar are important chemical raw materials. For the identification and determination of the individual phenol boiling below 210℃ in the low temperature coal tar, the methods of gas chromatography, liquid-liquid chromatography followed by ultra-violet analysis and fractional distillation followed by infrared analysis were evaluated and compared.

随着煤炼油工业的发展，煤焦油中的酚类，特别是低級酚，作为化工原料的利用很重要，我們应用(1)气液色譜法，(2)液液色譜与紫外光譜法結合及(3)精餾与紅外光譜法結合三种不同方法对210°以前的低級酚进行了各种异构体的成分分析，比較分析結果：三种方法对同一样品进行分析时，最大絕对誤差在2％以内，其中以气液色譜法最为快速，液液色譜法次之，精餾-紅外光譜法費时間較多；但后二种方法所得数据較完全。

The results showed that gasification performance of lump coal - hot gas along with more coal amount becomes gradually optimized.

结果表明，块煤—高温煤气的气化性能随着煤量的增加而逐渐优化，第二段固定床加煤量一般为加煤总量的17%~25%较为适宜。

Since China's large cities were faced with serious coal\|smoke pollution with PM 10 and SO 2 as the main pollutants, natural gas is becoming one of the most attractive clean replacers of coal.

国内大城市以PM10 和SO2 为主要污染物的煤烟型污染十分严重，因而天然气作为煤的清洁替代品已越来越受到人们的重视。过去天然气作为宝贵的战略资源多被用作化工原料，而对是否应将其作为城市民用燃料存有争论。

With the successful experiences in the coal-fired power plant, High-frequency Electrostatic-Fabric integrated dedusting technology has been proved to meet the requirements of energy saving and emission reduction under the poor condition of flue gas in the coal-fired power plant.

本文阐述了高频电袋复合除尘器技术的集成创新，结合在燃煤电站锅炉配套中的成功实践，满足了当前燃煤电站烟气条件差、排放要求高状况下的节能减排需求，此技术拥有常规单一除尘技术所没有的高效、节能优势，填补了国内空白，为今后燃煤电站粉尘治理提供了借鉴。

Abstruct : The raw coal gas produced by coal gasification furnace contains high-concentration dust, water, tar and other impurities, which influences the effective operation of CO conversion process and causes high operation cost.

煤气化制气炉粗煤气中含有较高浓度粉尘、水、焦油等杂质，影响了 CO 变换工艺的有效运行，导致操作费用大大增高。

Study on treatment of coal tar waste water by chlorine dioxide;2. Determination of naphthalene in coal tar by capillary pillar gas chromatography

白色易挥发晶体，有温和芳香气味，粗萘有煤焦油臭味；蒸汽压 0.13kPa/52.6℃闪点：80℃；熔点 80.1℃沸点217.9℃；不溶于水，溶于无水乙醇、醚、苯，相对密度(水=1)1.16；相对密度(空气=1)4.42；稳定性：稳定；危险标记：8；主要用途：用于制造染料中间体、樟脑丸、皮革、木材保护剂等

Seeing the coal gas comes out, I know, my coal stove drum breeze machine

看到煤气出来，我就知道，我的煤炉鼓风机

There are coal, petroleum, geothermal, natural gas, sea salt, mineral water and other natural resources.fei mei reserves of which 1.5 billion tons, annual output of 2,000,000 tons salt, Asia's largest salt - Salt Nanpu, China's largest coal mine shaft - Kailuan Qianjiaying Mine and one of China's three major desalination plant in Tangshan soda plant is located in the territory.

境内有煤炭、石油、地热、天然气、海盐、矿泉水等自然资源。其中肥煤储量15亿吨，海盐年产量200万吨，亚洲第一大盐场——南堡盐场、中国最大的竖井煤矿——开滦钱家营矿和中国三大碱厂之一的唐山碱厂坐落在境内。

Using RFPA2D-Flow stereo-gasses coupled system to simulate the process of gas draiange in lower air permeability coal seam by loose blasting,it interprets that loose blasting is a effective ways to increase air permeability in low air permeability coal seam .

运用RFPA2D-Flow固气耦合系统模拟了松动爆破抽放低透气性煤层内瓦斯的过程，解释了爆破松动是增加低透气性煤层透气性的有效途径，本文对松动爆破前后抽放过程中煤层内瓦斯压力和瓦斯渗流场的变化规律进行了数值模拟对比，为进一步理解瓦斯抽放、松动爆破增透机理等提供理论基础和科学依据。

After analyzing fully-mechanized sub-level caving technology in the case of special thick and hard coal seam, it is presented that the increment of cavability of hard roof coal and available control of gas are the main difficult technology problem to be faced.

通过对特厚坚硬煤层综放开采技术的系统分析，指出提高坚硬顶煤的冒放性和瓦斯的综合治理是该条件下综放开采所面临的主要技术难题。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。