煤气

The appositeness of gas furnace gas application in the production of zinc powder by distillation method as heating energy is described.

阐述采用煤气发生炉生产煤气作为精馏法生产锌粉生产工艺中加热源的合理性，分析两段式煤气发生炉在用于生产热煤气时的优缺点，介绍其在精馏法生产锌粉生产工艺中的应用及其所做的改进。

In order to reduce the moisture content in the blast furnace gas and increase gas caloric value, screen dehydrator s were mounted in the former system and the washing system was optimized.

济钢燃气厂在高炉煤气净化处理中存在煤气含水量超标的问题，为降低高炉煤气含水量、提高煤气热值，在原系统中加装了丝网脱水器，并对洗涤系统进行了优化操作。

The influences of different metallization ,different oxidation and different gas temperatures on coal and oxygen consumption were studied.

研究了金属化率、氧化度、荒煤气温度对煤耗、氧耗和煤气量的影响；通过对熔化气化炉热平衡分析，了解热量的收入与支出项；通过对还原煤气气体成分的分析图，判断该气体成分能否满足竖炉的需求，通过调整操作参数更新还原煤气的煤气成分。

For the sake of using LDG better, increasing LDG reclaimable capacity every ton steel, decreasing comsumption in the first energy sources, openning up LDG users ceaselessly, we decide to replace COG by LDG as the fuel of steel jar baking apparatus and introduce HTAC technology in the alteration of economizing energy sources.

为了更好的使用转炉煤气，提高转炉煤气的吨钢回收能力，减少一次能源的消耗，不断开发转炉煤气用户，用转炉煤气取代焦炉煤气作为钢包烘烤器燃料，并且采用高温空气燃烧技术对钢包烘烤器进行了节能技术改造。

Moreover, online measurement system can be obtained after a fitting formula about water vapour saturated pressure in the gas pipeline at different temperatures is established by using the function chain neural network, which can greatly simplify the software of measurement of gas flux in the pipeline and quickly and truly realize measurement of gas flux in the pipeline in real time and on line in the design range of flowmeter.

在管道煤气计量系统测量中引入管道煤气相对湿度修正，并采用湿度传感器转换相对湿度信号，利用函数链神经网络对管道煤气工况温度下所对应的水蒸汽饱和压力进行拟合，得到基于函数链神经网络的管道煤气流量计量模型和在线计量系统，从而大大简化管道煤气流量计量软件，在流量计设计范围内实现管道煤气流量实时在线计量。

Ltd's 40 t/h boiler heating surface has been optimized based on the analysis of coal-fired boiler and gas-fired boiler's different characteristics and heat transfer technology. At the same time, combustion mode and measures of stable combustion are analyzed and discussed, for the flameless combustion technology characters such as combustion speed, high-temperature, combusting completely and the stability of combustion, easy to operate, with the different combustion characteristics of blast furnace gas, coke-oven gas, converter gas and the actual needs of Chongqing Iron and Steel Co. Ltd's gas balance, a suitable combustion device is designed to improve boiler's thermal efficiency, recovery efficient of by-product gas, and reducing gas emission.

本文通过对燃煤锅炉与燃气锅炉的不同特点对比分析以及受热面传热技术的探讨，对重钢40t/h锅炉受热面进行了优化改造；同时对燃气燃烧方式以及强化燃烧的技术措施进行了分析和讨论，利用无焰燃烧技术的燃烧速度快、燃烧温度高，燃烧完全及扩散燃烧技术的燃烧稳定、运行可靠、结构简单等特点，结合高、焦炉煤气的不同燃烧特性和重钢煤气平衡的实际需要，选择、设计了合适的燃烧装置，实现了提高锅炉热效率，高效回收利用副产煤气，降低煤气放散的目的。

F. On the other hand, as the gas with high oxidizability introduced to pre-reduction process, it will give a lower reductibility of iron ore and as the ore come to the final process the burden of the final reduction vessel will be heavier, the refractories of it will be corroded seriously and the campaign-life of it will be shorter.

终还原排出的煤气可以供预还原使用，由于排出煤气温度较高，需要降温才能供预还原炉使用，在此过程中煤气的物理热未被利用，这是目前熔融还原工艺能源消耗普遍大于高炉工艺能源消耗的主要原因；同时排出煤气氧化度较高，影响到矿石的预还原率较低，铁浴终还原的负担较重，终还原炉渣对炉衬的侵蚀严重，影响到铁浴终还原炉的寿命。

Producer gas: refers to the coal gas, mixed coal gas, water gas, single water gas and double water gas generated through vaporization in the gas producer using air and a small amount of steam or coke and semicoke.

发生炉煤气：是指用空气和少量的蒸气将煤或焦炭、半焦，在煤气发生炉中进行汽化所产生的煤气、混合煤气、水煤气、单水煤气、双水煤气等。

In the producer gas sulfur originates in the gasification uses the coal, mainly by the H2S form existence, gasifies with the coal in the sulfur has 80% to transform H2S approximately to enter the coal gas, if, gasifies with the coal including the sulfur quantity is 1%, after the gasification changes over to in the coal gas to form about H2S approximately 2-3g/Nm3, but professions and so on ceramics, kleit contain the sulfur quantity request to the coal gas are 20-50 mg/Nm3; If in after coal gas H2S burning transforms SO2 is completely about 2.6g/m3, stipulates the SO2 highest emissions density target compared to the country to outdo many.

发生炉煤气中的硫来源于气化用煤，主要以H2S形式存在，气化用煤中的硫约有80％转化成H2S进入煤气，假如，气化用煤的含硫量为1％，气化后转入煤气中形成H2S大约2-3g/Nm3左右，而陶瓷、高岭土等行业对煤气含硫量要求为20-50 mg/Nm3；假如煤气中的H2S燃烧后全部转化成SO2为2.6g/m3左右，比国家规定的SO2的最高排放浓度指标高出许多。

The results indicate the mutual effect exists between the single coals, which could increase the maximum of thermal weight loss obviously and has a small effect on the temperature extent of the weight loss. The main pyrolysis production of coal is coke, but the main production of waste plastics is tar; the yield of water became decrease and the gas became increase by adding the waste plastics. And the CRI and CSR decreased with the ratio of waste plastics in coal. The main ingredients of tar from blend coal are aromatic hydrocarbon and alkane, while those of waste plastics are alkane and alkene. The result of co-coking with coal and waste plastics make the light tar and the aromatic hydrocarbon increase obviously. The combustible ingredient(CO、H2、CH4) of gas from co-coking with coal increase at different ratio; Co-coking with coal and waste plastics could increase the combustible ingredient and thermal value of gas.

结果表明，废塑料与煤混合物在煤的塑性温度区间内存在明显的相互作用，使最大热解失重峰迁移，热解速率变大，且随着废塑料配比的增加呈现规律性的变化；煤热解产物固体焦炭为主，而废塑料的热解产物以焦油为主，废塑料的添加使得总体焦炭和水产率下降，焦炉煤气和焦油的产率增加，即共焦化呈现出明显的&增油减水&效应；随着塑料添加量的增加，焦炭热强度呈现劣化趋势；废塑料代替瘦煤配煤炼焦可使其比例提高到3%而不影响焦炭的质量；纯煤焦化所得焦油以芳香烃类和烷烃类为主，而废塑料热解焦油以烷烃和烯烃为主；废塑料配煤炼焦，可使得的焦油呈现&环构化&和&轻质化&趋势；废塑料的添加可使煤气中的可燃组分(CO、H2、CH4)的含量均有不同程度的增加；废塑料配煤炼焦可以优化焦炉煤气的组成，增加煤气中的可燃组分，提高焦炉煤气的热值。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。