【精品完整版】煤化工专业焦化工艺

目录

摘要 (1)

ABSTRACT (2)

1文献综述 (3)

1.1 焦化工业发展史 (3)

1.1.1焦化工业的地位 (3)

1.1.2国外焦化生产现状 (4)

1.1.3国内焦化生产现状及问题 (5)

1.1.4中国焦化工业的发展方向 (7)

1.2煤焦油加工 (8)

1.2.1 中国煤焦油加工企业的分布与工艺特点 (9)

1.2.2世界煤焦油加工企业的概况与工艺特点 (10)

1.2.3国内外煤焦油加工工艺的比较 (10)

1.2.4焦油的连续蒸馏 (12)

1.3工业萘生产工艺 (14)

1.3.1工业萘的生产工艺 (15)

1.3.2双炉双塔连续精馏 (16)

1.3.3单炉单塔连续精馏 (17)

1.3.4 单炉双塔加压连续精馏 (17)

1.3.5提高萘产率和质量的措施 (18)

1.4本设计拟采用的方案 (18)

1.5非工艺条件的选择 (18)

2 设计内容 (20)

2.1工艺流程的选择 (20)

2.2初馏塔工艺计算 (21)

2.2.1初馏塔物料衡算 (21)

2.2.2 初馏塔的工艺计算 (22)

2.2.3 初馏塔工艺负荷计算 (27)

2.2.4 初馏塔尺寸的计算 (30)

2.2.5 初馏塔塔板主要工艺尺寸的计算 (33)

2.2.6 初馏塔塔板流体力学的验算 (35)

2.3 精馏塔工艺计算 (45)

2.3.1精馏塔物料衡算 (45)

2.3.2 精馏塔的工艺计算 (48)

2.3.3精馏塔工艺负荷的计算 (52)

2.3.4精馏塔尺寸的计算 (55)

2.3.5 精馏塔塔板主要工艺尺寸的计算 (57)

2.3.6 精馏塔塔板流体力学的验算 (60)

2.4 机械校核 (68)

2.4.1 精馏塔的机械校核 (68)

2.5 热量衡算 (81)

2.5.1 初馏塔酚油冷凝冷却器 (81)

2.5.2 工业萘冷凝器 (82)

2.6 管式炉的设计 (83)

2.6.1初馏塔管式炉 (83)

2.6.2 精馏塔管式炉 (85)

2.7非工艺条件 (86)

2.7.1土建设计条件 (86)

2.7.2采暖通风设计条件 (87)

2.7.3 电器与动力设计条件 (87)

2.7.4 给排水设计条件： (88)

2.7.5 分析化验条件 (89)

3 结论 (90)

参考文献 (92)

致谢 (93)

摘要

该设计采用的是酚、萘、洗三混组分通过双炉双塔分离生产工业萘的工艺设计。设计主要是对塔的设计，经过设计将塔的实际板数和相关尺寸确定并对塔进行校核。另外对关键设备选型的原则和结构参数,及工艺的改进措施作了简要阐述。

本工艺的设计计算过程为：生产工业萘的原料馏分为多组分混合物,其理论塔板数按多组分混合物精馏的计算法则求得。在双塔系统中，两塔均无侧线产品，故可按“关键组分法”来计算。首先进行物料衡算，得出各原料组成。塔的操作条件要确定操作压力和塔顶、塔底温度。操作压力采用近常压塔顶温度是由塔顶馏出物的组成和塔顶总压来决定的。塔底温度是由塔底的液相组成及塔底总压来决定的。由芬斯克方程计算最小理论塔板数。最小回流比按柯尔本法计算公式确定。

关键词：工业萘双炉双塔工艺

ABSTRACT

This article introduces the process design of rectification separation of naphthalene from wash oil with twin furnaces and twin column. It also recounts several considerations and comprehensive parameters of selecting the key separation unit as well as the production results and the process optimization.

The process of design and calculation process are: raw material for producting naphthalene is the multi-component mixture fraction. Theoretical plate numbers are achieved by their multi-component mixtures distillation to the calculation of the law. System in the twin towers, two tower no lateral line product, it may be the "key component method" to calculate. First material balance, obtain the composition of raw materials. Tower operating conditions must determine the operating pressure and the top, bottom temperature. operating pressure used to near atmospheric pressure. The top temperature of the tower is determined by the composition of distillates and the total pressure of the top of the tower. Bottom temperature is determined by the liquid phase of the bottom and the total pressure of the bottom. Fenske equation calculated from the minimum number of theoretical plates. Minimum reflux ratio calculated by this formula to determine cole. By the minimum number of theoretical plates and minimum reflux ratio Gilliland plans come check the actual plate number.

Key words: naphthalene twin dual-furnace process