工藝係統專業工程統一規範(pdf 69頁)

目 次
1 設計範圍.................................................................................................................................................................4
2 設計原則.................................................................................................................................................................4
3 一般工程設計規定...............................................................................................................................................4
3.1 計量單位.......................................................................................................................................................4
3.2 工程單位.......................................................................................................................................................5
3.3 使用的計算軟件...........................................................................................................................................5
3.4 現場氣象條件.................................................................................................................................................5
3.5 標準和規範.....................................................................................................................................................6
3.6 物理性質.........................................................................................................................................................6
4 流程圖.....................................................................................................................................................................6
4.1編號係統...........................................................................................................................................................6
4.2符號...................................................................................................................................................................6
4.3工藝流程圖的內容和升版................................................................................................................................6
4.4管道和儀表流程圖的內容和升版....................................................................................................................8
5 安全和環保（HSE）要求.................................................................................................................................10
5.1 設計階段HSE計劃及程序...........................................................................................................................10
5.2 裝置設計中采用的環境保護措施..............................................................................................................11
5.3 裝置安全運行及操作人員的人身安全......................................................................................................11
5.4 安全係統設計準則.....................................................................................................................................11
5.5 安全儀表係統（SIS）設計原則.................................................................................................................12
5.6 各裝置反應部分快速泄壓要求..................................................................................................................12
5.7 低液位停泵.................................................................................................................................................12
5.8 帶流量控製的離心泵最小流量旁路線......................................................................................................13
5.9 在工藝容器和泵之間的自動聯鎖閥..........................................................................................................13
5.10 重要用途備用泵的驅動機........................................................................................................................13
5.11 進料罐或反應部分氣液分離器的高液位.................................................................................................13
5.12 壓縮機的隔離...........................................................................................................................................13
5.13 倒流超壓保護...........................................................................................................................................13
5.14 排放要求...................................................................................................................................................14
5.15 泵密封.......................................................................................................................................................14
5.16 處理苯的強製規定...................................................................................................................................14
5.17 處理含H2S物流的強製規定.....................................................................................................................15
6 設備設計基礎.....................................................................................................................................................15
6.1 設計壓力.....................................................................................................................................................15
6.2 設計溫度...................................................................................................................................................19
6.3 設備設計壽命.............................................................................................................................................19
6.4 腐蝕裕量....................................................................................................................................................20
7 容器工藝設計.....................................................................................................................................................21
7.1 液體停留時間.............................................................................................................................................21
7.2 其它.............................................................................................................................................................21
8 塔板和填料工藝設計.........................................................................................................................................22
8.1 塔板.............................................................................................................................................................22
8.2 填料.............................................................................................................................................................22
9 換熱器工藝設計.................................................................................................................................................22
9.1 一般要求.....................................................................................................................................................22
9.2 管殼程流體的確定.....................................................................................................................................22
9.3 防衝板.........................................................................................................................................................23
9.4 換熱終溫.....................................................................................................................................................23
10 空冷器工藝設計...............................................................................................................................................23
10.1 空冷器設計餘量.......................................................................................................................................23
10.2 設計溫度...................................................................................................................................................23
10.3 管排數的確定...........................................................................................................................................24
10.4 管程數的確定...........................................................................................................................................24
11 加熱爐工藝設計...............................................................................................................................................24
11.1 混相...........................................................................................................................................................24
11.2 液相...........................................................................................................................................................24
11.3 氣相...........................................................................................................................................................24
11.4 易結焦的物流...........................................................................................................................................24
12 泵工藝設計.......................................................................................................................................................24
12.1 設計餘量...................................................................................................................................................24
12.2 氣蝕餘量...................................................................................................................................................25
12.3 泵的密閉排放...........................................................................................................................................25
12.4 泵的冷卻...................................................................................................................................................25
12.5 泵的封油和衝洗.......................................................................................................................................25
13 壓縮機工藝設計.............................................................................................................................................25
13.1 一般規定...................................................................................................................................................25
13.2 工藝流程設計的一般要求..........................................................................................................................25
14 儀表和控製閥...................................................................................................................................................34
14.1 控製係統...................................................................................................................................................34
14.2 報警和停車裝置.......................................................................................................................................34
14.3 隔斷閥.......................................................................................................................................................34
14.4 聯鎖切斷閥.................................................................................................................................................34
14.5 密封等級要求.............................................................................................................................................34
15 安全閥...............................................................................................................................................................34
15.1 一般規定...................................................................................................................................................34
15.2 特殊規定...................................................................................................................................................35
16 加熱爐燃料氣阻火器.......................................................................................................................................35
17 設備及管道排氣與排液....................................................................................................................................35
17.1 設備及管道排氣管設置............................................................................................................................35
17.2 設備及管道排液管設置.............................................................................................................................35
17.3 排氣與排液閥門設置圖.............................................................................................................................37
18 管道係統工藝設計規定.....................................................................................................................................37
18.1 管道內單相流體流速及壓力降控製推薦值...............................................................................................38
18.2 單相流.......................................................................................................................................................46
19 保溫材料...........................................................................................................................................................56
20 工藝和公用工程管道設計要求........................................................................................................................56
21 火炬及排放係統.................................................................................................................................................59
21.1 概述.............................................................................................................................................................59
21.2 排放設施上遊管線的設計..........................................................................................................................59
21.3 氣體排放係統.............................................................................................................................................59
21.4 火炬/放空係統負荷分析.............................................................................................................................62
21.5 下遊管係的尺寸確定.................................................................................................................................62
21.6 下遊管係的布置.........................................................................................................................................63
21.7 流量測量要求.............................................................................................................................................64
21.8 管路設計.....................................................................................................................................................64
21.9 減少火炬負荷的措施.................................................................................................................................65
22 采用的主要標準規範.........................................................................................................................................67
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