工艺系统专业工程统一规范(pdf 69页)

目 次
1 设计范围.................................................................................................................................................................4
2 设计原则.................................................................................................................................................................4
3 一般工程设计规定...............................................................................................................................................4
3.1 计量单位.......................................................................................................................................................4
3.2 工程单位.......................................................................................................................................................5
3.3 使用的计算软件...........................................................................................................................................5
3.4 现场气象条件.................................................................................................................................................5
3.5 标准和规范.....................................................................................................................................................6
3.6 物理性质.........................................................................................................................................................6
4 流程图.....................................................................................................................................................................6
4.1编号系统...........................................................................................................................................................6
4.2符号...................................................................................................................................................................6
4.3工艺流程图的内容和升版................................................................................................................................6
4.4管道和仪表流程图的内容和升版....................................................................................................................8
5 安全和环保（HSE）要求.................................................................................................................................10
5.1 设计阶段HSE计划及程序...........................................................................................................................10
5.2 装置设计中采用的环境保护措施..............................................................................................................11
5.3 装置安全运行及操作人员的人身安全......................................................................................................11
5.4 安全系统设计准则.....................................................................................................................................11
5.5 安全仪表系统（SIS）设计原则.................................................................................................................12
5.6 各装置反应部分快速泄压要求..................................................................................................................12
5.7 低液位停泵.................................................................................................................................................12
5.8 带流量控制的离心泵最小流量旁路线......................................................................................................13
5.9 在工艺容器和泵之间的自动联锁阀..........................................................................................................13
5.10 重要用途备用泵的驱动机........................................................................................................................13
5.11 进料罐或反应部分气液分离器的高液位.................................................................................................13
5.12 压缩机的隔离...........................................................................................................................................13
5.13 倒流超压保护...........................................................................................................................................13
5.14 排放要求...................................................................................................................................................14
5.15 泵密封.......................................................................................................................................................14
5.16 处理苯的强制规定...................................................................................................................................14
5.17 处理含H2S物流的强制规定.....................................................................................................................15
6 设备设计基础.....................................................................................................................................................15
6.1 设计压力.....................................................................................................................................................15
6.2 设计温度...................................................................................................................................................19
6.3 设备设计寿命.............................................................................................................................................19
6.4 腐蚀裕量....................................................................................................................................................20
7 容器工艺设计.....................................................................................................................................................21
7.1 液体停留时间.............................................................................................................................................21
7.2 其它.............................................................................................................................................................21
8 塔板和填料工艺设计.........................................................................................................................................22
8.1 塔板.............................................................................................................................................................22
8.2 填料.............................................................................................................................................................22
9 换热器工艺设计.................................................................................................................................................22
9.1 一般要求.....................................................................................................................................................22
9.2 管壳程流体的确定.....................................................................................................................................22
9.3 防冲板.........................................................................................................................................................23
9.4 换热终温.....................................................................................................................................................23
10 空冷器工艺设计...............................................................................................................................................23
10.1 空冷器设计余量.......................................................................................................................................23
10.2 设计温度...................................................................................................................................................23
10.3 管排数的确定...........................................................................................................................................24
10.4 管程数的确定...........................................................................................................................................24
11 加热炉工艺设计...............................................................................................................................................24
11.1 混相...........................................................................................................................................................24
11.2 液相...........................................................................................................................................................24
11.3 气相...........................................................................................................................................................24
11.4 易结焦的物流...........................................................................................................................................24
12 泵工艺设计.......................................................................................................................................................24
12.1 设计余量...................................................................................................................................................24
12.2 气蚀余量...................................................................................................................................................25
12.3 泵的密闭排放...........................................................................................................................................25
12.4 泵的冷却...................................................................................................................................................25
12.5 泵的封油和冲洗.......................................................................................................................................25
13 压缩机工艺设计.............................................................................................................................................25
13.1 一般规定...................................................................................................................................................25
13.2 工艺流程设计的一般要求..........................................................................................................................25
14 仪表和控制阀...................................................................................................................................................34
14.1 控制系统...................................................................................................................................................34
14.2 报警和停车装置.......................................................................................................................................34
14.3 隔断阀.......................................................................................................................................................34
14.4 联锁切断阀.................................................................................................................................................34
14.5 密封等级要求.............................................................................................................................................34
15 安全阀...............................................................................................................................................................34
15.1 一般规定...................................................................................................................................................34
15.2 特殊规定...................................................................................................................................................35
16 加热炉燃料气阻火器.......................................................................................................................................35
17 设备及管道排气与排液....................................................................................................................................35
17.1 设备及管道排气管设置............................................................................................................................35
17.2 设备及管道排液管设置.............................................................................................................................35
17.3 排气与排液阀门设置图.............................................................................................................................37
18 管道系统工艺设计规定.....................................................................................................................................37
18.1 管道内单相流体流速及压力降控制推荐值...............................................................................................38
18.2 单相流.......................................................................................................................................................46
19 保温材料...........................................................................................................................................................56
20 工艺和公用工程管道设计要求........................................................................................................................56
21 火炬及排放系统.................................................................................................................................................59
21.1 概述.............................................................................................................................................................59
21.2 排放设施上游管线的设计..........................................................................................................................59
21.3 气体排放系统.............................................................................................................................................59
21.4 火炬/放空系统负荷分析.............................................................................................................................62
21.5 下游管系的尺寸确定.................................................................................................................................62
21.6 下游管系的布置.........................................................................................................................................63
21.7 流量测量要求.............................................................................................................................................64
21.8 管路设计.....................................................................................................................................................64
21.9 减少火炬负荷的措施.................................................................................................................................65
22 采用的主要标准规范.........................................................................................................................................67
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