年产10万吨的焦油加工车间的初步设计(2)
本设计的主要设备有：圆筒式管式炉 350 万千卡/小时，一段蒸发器的直径
DN=1200mm、二段蒸发器直径 DN=1800mm、馏分塔直径 DN=1400mm，塔高
H=23000mm，塔板数为 37，蒽塔DN=1400mm，塔板数为 23，一段冷凝冷却器
的换热面积是 32m2，馏分塔冷凝冷却器的换热面积是 148 m2，蒽油浸没式冷却器的换热面积是18m2。
毕业论文关键词： 煤焦油；工艺计算；焦油蒸馏；馏分塔The general instructions of design
This design topic I choose: an annual output of 100000 tons of tar processing plant
preliminary design. With the continuous development and progress of science and
technology, more and more energy development and utilization, and the coal tar is
also likely to become more and more important in the future. So it is of great
significance and research for coal tar. Coal tar is a complex mixture of components of
tens of thousands of species, single compounds have been isolated and identified
about 500 species, accounting for about 55% of the total amount of coal tar, benzene,
xylene, naphthalene, including 174 kinds of neutral component; phenol, cresol and
other 63 kinds of acidic components and 113 kinds of alkaline component. Coal tar
processing using created the modern history of organic chemical industry. Today in
the rapid development of petrochemical industry, coal chemical industry occupies an
important position,still has an irreplaceable role in providing polycyclic aromatic
hydrocarbons and carbon content of high material.
Coal tar processing is mainly traditional separation of coal tar distillation
system,first used for processing and further separation, and then mainly from two
naphthalene and anthracene content in the coal tar component. After a period of
development, the coal tar processing to improve the scale (more than 300000 t/a),
appeared in a tube furnace continuous tar distillation technology development success
of the historic moment of coal tar processing as a precursor of modern organic
chemistry industry, has been 100 years of history.Although the past 30 years by the
fierce competition of petrochemical industry,coal tar processing not only lose the
value of its existence, but still potential for development, has the important status in
the economy.
Although the coal resources in China, but with the strength of mining has increased
year by year, has reduced coal reserves. How to further improve the utilization value
of coal, coke and coal deep processing, in the process of coal tar coke production
about 4% worth further study, especially in recent years, rising oil prices, the value is
reflected in the more and more coal tar chemical products,many domestic coking
plant, coal mining enterprises should be how to play the added value of coal tar
processing products. In recent years, with the China steel industry, in the development
of metallurgical industry and coal chemical industry,for coal tar processing industry in
China brought good opportunity hitherto unknown. We should seize this rare
opportunity, calendar continued growth in domestic coal tar based on resources, makefull use of and guide enterprises to develop coal tar processing scale, continuously
improve the technology content of products, with the rapid development of fine
chemical industry in the direction of firm.
In addition, I think that the coal tar distillation technology can also according to the
variety of products to choose, should strive to develop new technology of high
efficiency and low cost, so that the automatic control level of analysis, test, energy
saving and environmental protection and other aspects of the improvement.
In this design I introduced the tar distillation process, to the domestic and foreign
tar processing technologies were compared and in-depth analysis found that although