摘要
本文对兖州高硫煤在１０ｍｌ固定床反应器中分别与相当条件下的焦炉煤气、合成气、氢气共热解所得半焦及焦油元素进行系统的分析比较。结果表明，在压力为３ＭＰａ，温度为６５０℃，升温速率为１０℃／ｍｉｎ相对温和的热解条件下，兖州高硫煤与焦炉气、合成气、氢气共热解脱氮率分别为３０１％、３５７％、４４０％（ｗ％，ａｄ），脱硫率基本相当约为８０％（ｗ％，ａｄ），且在此三种热解气氛下煤中硫在热解固、液、气产物中的分布极为相似，分别约为２０％、１０％、７０％。与相当氢分压下的纯氢加氢热解相比，５ＭＰａ焦炉气气氛下兖州煤热解脱硫率增加约４５％，脱氮率降低约３５％。用焦炉气顶替纯氢气进行煤加氢热解具有较大的脱硫优势。
The desulfurization and denitrogenation were systematically investigated by
analyzing the chars and tars from copyrolysis of Yanzhou high sulfur bituminous coal with
coke-oven gas (COG), synthesis gas (SG) and hydrogen The results indicated that at the
conditions of 3MPa, upto 650 with a heating rate of 10/min, the desulfurization of coal pyrolysis
with COG, SG adn hydrogen were almost equal (about 80% w%, ad), the order of denitrogenation
were: hydrogen (41%)>SG(35%)>COG(30%) The distributions of sulfur in char, oil and gas was
very similar under the three reactive gases, and ie, about 20% in char, 10% in tar and 70% (diff)
in gas, respectively Compared with hydropyrolysis at the same hydrogen partial pressure, the
desulfurization of coal pyrolysis with coke-oven gas increased about 45%, however, the
denitrogenation decreased about 35% There is an improtant desulfurization advantage for
hydropyrolysis using COG and SG instead of pure hydrogen Compared with the co-pyrolysis of
coal with COG, Yanzhou coal pyrolysis under SG can reach the same desulfurization and
higher denitrogenation
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第3期268-272,共5页
Journal of Fuel Chemistry and Technology
基金
日本NEDO资助项目
山东省自然科学基金
山西省自然科学基金
关键词
煤
加氢热解
富氢气氛
脱硫
脱氮
环境保护
coal pyrolysis, hydrogen-rich gases, desulfurization,
denitrogenation
