年产6万吨丙烯腈制乳酸生产工艺设计+图纸(3)
2.Design standard
This design has referred to below the national standard and the stipulation.
a. Production process dangerous material and harmful factor classification and code.（GB/T13816-1992）
b. Commonly used dangerous chemistry classified standard.（GB13690-1992）
c. Inpressure vessel chemistry medium model harm and explosion hazard degree classification (HGJ43-1991)
d. Factory fire protection stipulation (GBJ16-1987)
e. Shell type heat interchanger standard (GB151)
f. The steel pins down the pressure vessel (GB150)
g. The sewage synthesis discharges the stipulation (GBJ8978)
h. Craft system arrangement of equipment design stipulation (HG20570)
i. Chemical installment piping arrangement design stipulation (HG/T20549)
3.Principle of design and main design standard
Principle:
(1) Safe: In the chemical production the massive matter are flammable, explosiveor are virulent. Therefore, the design must fully consider each kind is obvious and the latent danger, the guarantee production personnel'shealth and the security.
(2) Ease of operation: While determines each production process and equipment, but also must reasonably determine the operating condition. Because of it to the production process and the equipment establishment and it’s the function display and the control plan determination, all has the direct relations.
(3) Investment province: Namely the request economically uses the equipment investment, the construction invests, the public project investment and the manpower cost.
(4) Is advantageous for the installment: The factory arrangement should satisfy the construction and the installment work request. Specially should consider the large-scale equipment the hoisting, in the factory the path pavement structure and the load standard and so on should satisfy the work the request.
Main design standard:
KeyWords: Lactic acid; Acrylonitrile; The production process; use
目 录
引 言 1
1 乳酸的前景及生产方法简介 2
1.1 乳酸的物化性质 2
1.2 乳酸的用途和市场前景 2
1.2.1 乳酸的用途 2
1.2.2 乳酸的市场前景 4
1.2.3 国内生产乳酸的厂家 4
1.3 制备乳酸工艺流程的选择 4
1.3.1 乳酸的生产方法 4
1.3.2本设计采用生产方法 5
1.3.3生产过程注意点 6
2 物料衡算 12
2.1 工艺流程划分 12
2.2 衡算基准 12
2.3 列衡算式 12
3 热量衡算 15
3.1 热量衡算示意图 15
3.2 能量估算 15
3.2.1 主要反应 15
3.2.2 能量计算 15
3.3 加入物料的总体积 16
3.4 反应釜的能量衡算 16
3.4.1 传热系数和蒸气参数 16
3.4.2 加热 16
3.4.3 冷却 16
3.4.4 水蒸气和冷却水用量 19
4 反应器设计 20
4.1 反应釜的设计 20
4.1.1 反应釜大小及主要技术指标 20
4.1.2 反应釜壁厚设计 21
4.2 精馏塔的设计 22
4.2.1 精馏塔中物料表 22
4.2.2 精馏塔的计算 23
4.2.3 塔板数、填回流比、料塔高度的计算 23