2.5万吨/年液相氧化甲苯制苯甲醛工艺设计(2)
2 Design Standards
The design references the national standards and regulations.
3 Design principles and key design indicators
(1) Safe and environmental friendly: In this design, the production process has reasonable temperature, atmospheric pressure, the device complies with the requirements of production, explosions and other unsafe events occur in the production process may be very small, the design used strict regulations of national and local health and safety to ensure little environmental pollution and the health of production personnel.
(2) Operation is simple: adhere to the scientific attitude to determine various production process and equipment and the operation condition reasonably, striving to achieve the mild reaction condition and low requirements of equipments and convenient operation of the workers as the result.
(3) Reasonable investment: reduce equipment costs, raw material costs, labor costs and other aspects investment effectively and reasonably.
(4) Easy to install: Plant layout should meet the requirements of the construction and installation, with emphasis to consider the installation of large equipment, factory and load road pavement construction and installation standards should meet the requirements.
(5) Basis of calculation:
Annual production of 25000 tons
Days to 320 days in，35 days for machine maintenance, 5 days mobile
Keywords: benzaldehyde; toluene; liquid phase; oxidation; process design
目录
1 总论 1
1.1 概论 1
1.2 苯甲醛生产工艺简介 1
1.2.1氯化苄水解法 1
1.2.2甲苯选择性氧化法 2
1.2.3苯甲酸或苯甲酸酯还原 3
1.2.4苯甲酸甲酯还原 3
1.2.5间接电氧化合成法制苯甲醛 4
1.2.6其他方法制苯甲醛 4
1.3 苯甲醇 4
1.3.1 苯甲醛的性质 4
1.3.2 苯甲醛的用途 5
1.3.3 苯甲醛在世界及中国的概况 5
1.3.4 苯甲醛生产的发展前景与方向 6
1.4 主要原料及其余产物的性质 7
1.4.1甲苯 7
1.4.2 苯甲酸 8
1.5 本设计的主要任务和目标 9
1.5.1 设计的任务 9
1.5.2 设计的目标 9
1.5.3 生产工艺条件 9
2 工艺流程设计 11
2.1 主要化学反应 11
2.2 工艺流程叙述 11
2.2.1 氧化剂的研究选择 11
2.2.2 催化剂的研究选择 11
2.3 产控制说明及控制项目 12
2.4 工业安全 12
2.5 车间定员 14
3 物料衡算 15
3.1 反应方程式 15
3.2 工艺要求与中试数据 15
3.2.1 年产量与年工作日 15
3.2.2 中试数据 15
3.3 基于中试数据计算 16
3.3.1 投料量计算 16
3.3.2 氧化反应计算 16
3.3.3 氧化反应物料衡算 17
3.4 总物料衡算表 18
4 热量衡算 19
4.1 焓的计算 19
4.1.1 甲苯的标准生成焓 19
4.1.2 氧气的标准生成焓 19
4.1.3 水的标准生成焓 19
4.1.4 苯甲醛的标准生成焓 19
4.1.5 氮气的标准生成焓 19