Design principles: equipment selection principles:Applicable in production, that is, the selected equipment should be designed to expand production scale or develop new products and other requirements; Advanced technology, that is, on the premise of meeting production needs, requires its performance indicators must maintain advanced level, so as to improve product quality and extend its technical life. Economically reasonable, that is, reasonable price of equipment, low energy consumption and maintenance cost during use, and short payback period; Principles of process design: safe and reliable, reasonable economy, advanced technology; Reasonable selection of process flow and design indicators; Leaving room for exploitation and development of production; Reasonable consideration of mechanization and automation equipment level; Pay attention to environmental protection and reduce pollution; Consider the requirements of other professional designs and provide a reliable basis for their design. Tower equipment design principle: technically reliable and can meet the technological requirements, accord with the product specifications, production capacity is big, high efficiency, good adaptability, changes in gas and liquid quantity can still stable to operate, and maintain a high efficiency, simple structure, easy to manufacture and installation, convenient operation and management, easy cleaning and maintenance. Plant layout design principles: maximizely meet the requirements of process production including equipment maintenance, effective use of workshop building area and land, considering the development of the workshop and site of expansion, workshop by use of labor protection, anticorrosion, fire prevention, antivirus, explosion and safety and health measures conform to the requirements of the specification, and traffic logistics can't cross. Environmental protection principles:practice guidelines "prevention first, comprehensive management, management first"; We will resolutely plan, implement and develop environmental protection in parallel with production and construction, and unify economic, social and environmental benefits. By design, we will resolutely plan, implement and develop environmental protection in parallel with production and construction, and achieve unity of economic, social and environmental benefits.In the process of production and construction, we will ensure that advanced pollution-free or low-pollution technologies are used to rationally develop and utilize various resources and energy resources, and at the same time prevent and control pollution such as waste water, waste gas, waste residue and noise.Finally, it meets the emission standards and environmental quality requirements stipulated by the state or local people's governments.

Main technical data:information on scientific research units, information owned by the designer, materials owned by production enterprises, information owned by the capital construction department, foreign technical eyeballs and other information, experimental research results for design, raw materials and product price data, other relevant departments.

Keywords: Ethylbenzene; Styrene;Design; Process; technology

目  录

1  概述 1

1.1  苯乙烯的简介 1

1.2  苯乙烯的用途 3

2  工艺流程与选择 5

2.1  工艺介绍 5

2.2  工艺路线的选取 6

3  反应器的设计 8

3.1  物料衡算 8

3.2  热量衡算 10

3.3  反应器计算 12

3.3.1  催化剂的参数计算 12

3.3.2  高度与直径计算 15

3.3.3  壁厚的计算与选型 17

3.3.4  封头设计 18

4.精馏塔的计算 19

4.1  物料衡算 19

4.2  精馏塔设计 21

4.2.1  相平衡 21

4.2.2  塔板数求解 23

4.2.3  物性数据 25

4.2.4  塔径计算 26

4.2.5  塔板结构参数 28

4.2.6  浮阀的数目与排列 30