tar yield

Increase in pyrolysis oxygen concentration led to low tar yield, of which the oxygen contained compound increased especially phenol.

随着氧气浓度增加，焦油产量降低，焦油组分中的含氧化合物，特别是苯酚类物质明显增多。

Practice on reducing tar yield of cigarette

卷烟降焦综合技术方法与实践

Some waste plastics are added to mixed coal and coking with a small coke oven, then tar yield, coke yield, coke granularity, coke intensity of I rotational kettle and coke ash is analyzed.

在炼焦配合煤中添加一定的废塑料，利用自制的小焦炉炼焦，对所得的焦炭和焦油产率、焦炭粒度、焦炭I转鼓强度和焦炭灰分等进行了分析。

In this paper, the fusel was added in bituminous pyrolysis for the first time. The pyrolysis of shenmu bituminous coal was investigated on a fixed-bed reactor. We hoped to improve the situation that the coal tar yield of the traditional pyrolysis process was low.

本文首次将杂醇引入煤热解中，利用固定床热解装置对神木烟煤进行研究，希望改善传统热解工艺焦油产率较低的状况。

The smoking quality of cigarettes made of the microwave dried cut tobacco was improved obviously, while the weight of cigarette, nicotine content in smoke, and tar yield were decreased by 13.4%, 21.2%, and 4%, respectively.

卷烟质量得到明显提高，单支重量、烟气烟碱量和焦油量各下降134%、212%和4%。

The tar and char yield were low and decreased with the gasification temperature.

焦油和焦炭的产率较低并随气化温度的提高而降低。

The tar yield and lack of small-molecule combustible gas affect the further development and application of biomass gasification technology.

在生物质气化过程中，由于焦油的产生以及生成的小分子可燃气体较少的特点，影响了生物质气化技术的进一步推广和应用。

Secondly, experiment of biomass pyrolysis in tube furnace is carried out to study the effect of porous bed material on gas yield, tar yield, tar yield and content of hydrogen.

其次，在管式气氛炉中研究床料对生物质热解产气量、焦油产量以及热解产富氢燃气的影响。

With the increase of Ni loading and reduction temperature of Ni/ MgO catalyst, the tar yield increases.

随着Ni/MgO催化剂中Ni负载量和还原温度的增大，焦油产率均增加。

The tar yield increased firstly, and then decreased, and got its maximum at 600 ℃.

随温度升高，焦油产率表现出先增大后减小的趋势，在600℃时达到最大值。

When reaction temperature is higher, the former is lower than the latter, thus tar yield is lower and the yields of light products are higher.

反应温度较高时，环烷基的脱氢芳构化反应比其开环断碳链裂解的反应速度慢，因而就会有更多的环烷基裂解，生焦率低，轻质目的产品收率高。

The effects of tobacco fragment on filling ability of mixed cut tobacco, weight and tar yield and sensory evaluation of single cigarette is studied.

研究了在混合烟丝中加入不同比例的烟叶碎片对混合烟丝填充值、烟支单重、卷烟焦油产生量以及感官质量的影响。

The results show that the yield of xylan pyrolysis tar product increases with rising reacting temperature, but decreases with rising temperature after approaching a maximum value caused by the secondary decomposition of tar.

试验结果表明，木聚糖热解生成的焦油产率随温度升高而增加，达到最大值后随着温度的继续升高，焦油发生二次裂解使产率降低；

Establishment of Mathematical Model for Predicting Cigarette's Tar Yield with Projection Pursuit Regression Method

投影追踪回归（PPR）法建立卷烟焦油预测数学模型

The tar whose yield was 2%~ 9% can be used as chemical feedstock and fuel.

得低温焦油2%～9%，可加工成化工产品和燃料油。

Experimental results showed that when the pyrolysis oxygen concentration increased, the CO2 concentration in the product gas increased, while CH4 concentration and total tar yield decreased.

结果显示热解气氛中氧气浓度增加导致部分氧化后CO2产量增加，H2含量下降，焦油总量下降。

The physical and chemical synergism exists in the co-carbonization of plastics and coal and reduces the chance of secondary reaction, which increases tar yield and favours the formation of methyl-substituted aromatic compounds in tars.

塑料与煤共焦化过程中同时存在物理和化学协同作用，减少了二次反应的机会，增加了焦油收率，同时促进了焦油中芳香化合物的甲基化。

The tar yield increased with increase of temperature and maximized at about 27% of lignin at 550 ℃. Beyond this temperature tar yield decreased while more uncondensable gas was produced due to secondary decomposition.

焦油产量随温度升高而增大，在550℃出现质量分数为27%的最大产量，温度进一步升高，部分挥发分的二次裂解使焦油产量降低而轻质气体产量大大增加；

It is very important for clean and efficient utility of low rank coal with high volatile matter or biomass to decrease the tar yield and cracking it into high calorie gas during gasification.

热解气化过程中，促进焦油的裂解使之转化为高热值煤气，对高挥发分劣质煤和生物质燃料的清洁高效利用具有重要的意义。

Using catalyst is an available and economic method to improve the quality of small-molecule combustible gas, increase the biomass utilization efficiency and decrease the tar yield.

使用催化剂是一种可以提高小分子可燃气体品位、提高生物质利用效率、减少焦油产生的经济可行的办法。

This thesis focuses on the experimental study of mild gasification of Zhaotong lignite and mathematical model on predicting tar yield.

作者主要研究了温和气化技术的两个方面的内容：昭通褐煤温和气化试验和建立预测焦油产率的数学模型。

Tar yield increases with the increase of volatile matter yield of brown coal in different ages.

焦油产率系随着不同时代褐煤挥发分产率的增多而增加。

Consideration from tar yield, 520 ℃ is the optimum temperature and this is consistent with the result of fixed-bed experiment.

从多产焦油的角度考虑，520℃为最佳热解温度，这与固定床热解实验得到的最佳热解温度相符合。

When HDPE, LDPE or PP was added into TC, the tar yield of pure TC increased and the water yields decreased. However, for waste PS, the case was just the opposite.

当添加HDPE、LDPE、PP时，焦煤的焦油收率增加，热解水收率下降，但添加PS时的情况正相反；

Gas production rate increases with the gasification temperature. Solid residue decreases with increasing temperature. Tar yield decreases with the increasing temperature when the temperature exceeds 650 ℃.

气体产率随气化温度的升高而升高，固体残渣随温度的升高而降低，焦油产率当温度超过650℃时随温度的升高而降低。

With the increase of pyrolysis temperature and gas flow rate, the tar yield increases.

随着热解温度和气体流量的增大，焦油产率增加。

After removing minerals of asphalt shale by HCl/ HF mixing acids, the conversion ratio increased and tar yield reached 14.4%.

沥青页岩经HCl/HF脱除矿物质后，与神府煤共热解时的转化率增加，焦油产率达到14.4%。

Correlation, Path and Regression Analyses Between Physical Traits and Tar Yield of Flue-cured Tobacco

烤烟物理性状与焦油量的相关、通径及回归分析

Research on the tar yield and properties of coal pyrolysis in an internal-heated rotary furnace

内热式回转炉煤热解工艺的焦油产率与性质研究

Compared with the experimental results from those without steam existence, the tar yield of co-pyrolysis with steam was increased. The water vapor atmosphere could promote the co-pyrolysis process.

实验结果表明，与没有水蒸气气氛相比，加入水蒸气后的共热解液体焦油的产率增加，说明水蒸气气氛能够促进两者的共热解过程。