Design principle: the principle of equipment selection: it is applicable to production, that is, the equipment selected and purchased should be adapted to the requirements of expanding production scale or developing new products. Advanced technology, that is, on the premise of meeting production needs, which requires its performance indicators to 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. The 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. Workshop layout design principles: maximize 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 protection and safety and health measures to conform to the requirements of the specification, such as traffic logistics did not stagger. Principles: environmental protection and "Prevention first, comprehensive management, to promote management" policy, resolutely to protect the environment and synchronization of production and construction planning, synchronous implementation, synchronous development, realize economic benefit, social benefit and environmental benefits of unification. Ensure that in the process of production and construction, USES the advanced technology of no pollution or less pollution, reasonable development and utilization of resources, energy, prevention and treatment of waste water, waste gas, waste residue, noise pollution, such as meet the national or the local people's governments of the prescribed discharge standards and environmental quality requirements.

Main technical data: scientific research units, design units with data, materials production which enterprises have, basic information construction department, foreign eyes and other information technology, to design the experimental research results, raw materials and product price information, the information to other departments.

Key words: Ethanol；Material balance；Heat balance；Distillation

目录

1  绪论 1

1.1  乙醇生产的意义及发展史 1

1.1.1  乙醇生产的意义 2

1.1.2  乙醇生产的发展 3

1.2  乙醇的性质及用途 4

1.2.1  乙醇的物理性质 4

1.2.2  乙醇的化学性质 5

1.2.3  乙醇的应用 6

2  乙醇发酵工艺 7

2.1  乙醇的主要生产工艺 7

2.1.1  发酵法 7

2.1.2   合成法 7

2.2 液化和糖化 7

2.2.1  液化 8

2.2.2  糖化 8

2.3.乙醇发酵   9

2.3.1  乙醇发酵所用微生物 9

2.3.2  酵母的培养工艺 9

2.3.3  发酵乙醇的机理 10

2.3.4  乙醇发酵工艺 10

2.4  空气除菌设备 11

2.5  设计要求及内容 11

3  发酵罐的计算 13

3.1  物料衡算 13

3.2  发酵罐的计算 16

3.3  热量衡算 17