合格作品 字?jǐn)?shù)21606

摘 要
本設(shè)計為130萬噸/a焦炭焦化廠粗苯回收工段的初步設(shè)計。粗苯回收工序包括終冷除萘、洗苯和蒸餾脫苯。終冷除萘的方法很多，本設(shè)計采用富油除萘和冷卻水終冷工藝，此法所用的循環(huán)水量少，可以減少污水排放量。洗苯采用國內(nèi)較先進(jìn)的焦油洗油吸收法，洗苯后的富油采用管式爐加熱富油法脫苯蒸餾。設(shè)計中完成了粗苯回收工藝的工藝論證和主要設(shè)備的選型、計算，除此之外還進(jìn)行了非工藝部分設(shè)計和經(jīng)濟(jì)核算。
關(guān)鍵詞 洗苯 蒸餾脫苯 粗苯回收
Abstract
The design for the 1.3 million t / a coke coke plant benzene Recovery Section of the preliminary design. Crude benzene recovery process including the final cooling addition to naphthalene, benzene washing and distillation from benzene. In addition to the cold end of naphthalene many ways, this design uses the oil-rich end of the cooling water except naphthalene and cooling technology, this method is less used in the cycle of water can reduce the amount of sewage discharge. Benzene washing the more advanced use of domestic tar washing oil absorption, from the removal of benzene into the lean process to the top of the tower benzene washing, spray from the top down, with the upstream end of the cold gas after the absorption of the gas in contact with the crude benzene, benzene, wash oil-rich after the heat exchanger and entered by the tube furnace, heated to 180 ~ 190 ℃ into the distillation tower from benzene. Benzene vapor by the heat into the bottom two distillation towers, the two benzene Benzene Overhead light output, bottom weight leads to benzene.
Keywords Absorption of benzene Distillation from benzene Crude benzene recovery
目錄
第1章 緒論 1
1.1 苯類產(chǎn)品的應(yīng)用領(lǐng)域 1
1.2 粗苯回收的目的及意義 1
1.3 產(chǎn)品的質(zhì)量指標(biāo) 1
1.4 設(shè)計任務(wù) 2
1.5 設(shè)計地區(qū)的自然條件 2
第2章 工藝論證 3
2.1 煤氣的終冷及除萘的方法及工藝選擇 3
2.1.1 煤氣終冷和焦油洗萘工藝 3
2.1.2 煤氣終冷和機(jī)械化除萘工藝 4
2.1.3 富油洗萘和煤氣終冷工藝 5
2.1.4 橫管終冷洗萘工藝 5
2.2 洗苯工藝 6
2.2.1 吸附法 6
2.2.2 洗油吸收法 6
2.2.3 冷凍法 6
2.3 脫苯工藝 7
2.3.1 蒸汽法脫苯工藝 8
2.3.2 管式爐法脫苯工藝 8
第3章 粗苯回收工段工藝詳述 10
3.1 工藝流程詳述 10
3.1.1 富油洗萘和煤氣終冷工藝 10
3.1.2 焦油洗油洗苯工藝 10
3.1.3 管式爐加熱富油脫苯生產(chǎn)兩種苯工藝 11
3.2 粗苯回收原理和影響因素 12
3.2.1 洗油吸收苯族烴的基本原理 12
3.2.2 影響苯族烴吸收的因素 12
3.3 脫苯原理和影響因素 14
3.3.1 脫苯原理 14
3.3.2 影響脫苯的因素 14
3.4 影響粗苯回收率的因素 15
第4章 主要設(shè)備的工藝計算和選型 16
4.1 終冷洗苯部分的工藝計算及設(shè)備選型 16
4.1.1 計算依據(jù) 16
4.1.2 計算過程 16
4.2洗苯塔的計算 20
4.3 蒸餾脫苯部分設(shè)備計算和選型 23
4.3.1 計算依據(jù) 23
4.3.2管式爐 24
4.3.3再生器計算 31
4.3.4 脫苯塔計算 33
4.3.5 兩苯塔的計算 37
4.4 貧富油換熱器的計算和選型 40
4.4.1 基礎(chǔ)數(shù)據(jù) 40
4.4.2 熱量衡算 40
4.4.3 換熱器面積的確定 41
4.5 冷凝冷卻器的計算 42
4.6 設(shè)備一覽表 43
第5章 粗苯工段崗位定員及操作規(guī)程 45
5.1 操作崗位的確定及定員 45
5.1.1 崗位的確定 45
5.1.2 崗位定員 45
5.2 崗位操作規(guī)程 46
5.2.1 崗位操作 46
5.2.2 洗滌部分開、停工操作 46
5.2.3 蒸餾部分開、停工操作 47
5.2.4 特殊操作 47
5.2.5 不正常情況處理 48
第6章 非工藝部分 49
6.1 防火防爆和采暖通風(fēng) 49
6.1.1 防火防爆 49
6.1.2 采暖通風(fēng) 49
6.2 供汽和給排水 49
6.2.1 供汽 49
6.2.2 給排水 50
6.3 檢化驗項目 50
6.4 電力和土建 51
6.4.1 電力 51
6.4.2 土建 51
6.5 其他 51
6.5.1 安全與勞保 51
6.5.2 設(shè)備維修 51
第7章 經(jīng)濟(jì)評價 52
7.1 投資估算 52
7.2 成本核算 55
7.3 成本核算 57
結(jié)束語 58
致謝 59
參考文獻(xiàn) 60
contents
Chapter 1 Introduction 1
1.1 Benzene product applications 1
1.2 The purpose and significance of crude benzene recovery 1
1.3 Product quality indicators 1
1.4 1.4 The design task 2
1.5 In natural conditions in site 2
Chapter 2 Technology Demonstration 3
2.1 The end of cold gas and in addition to the methods and process selection naphthalene 3
2.1.2 Gas cleaning and tar naphthalene final cooling process 3
2.1.1 In addition to the gas end of the cold and mechanical process of naphthalene 4
2.1.3 washed naphthalene oil-rich and gas final cooling process 5
2.1.4 Naphthalene Cross tube final cold wash process 5
2.2 Benzene washing process 6
2.2.1 wash oil absorption 6
2.2.2 Adsorption 6
2.2.3 freezing 6
2.3 The process from benzene 7
2.3.1 Process steam method from benzene 8
2.3.2 tube furnace method from benzene process 8
Chapter 3 crude benzene recovery process detailed in Section 10
3.1 Process Description 10
3.1.1 washed naphthalene oil-rich and gas final cooling process 10
3.1.2 Washing process tar benzene 10
3.1.3 Process from benzene 11
3.2 Principles of and factors influencing recovery of crude benzene 12
3.2.1 wash oil absorption of benzene hydrocarbons in the basic principles of family 12
3.2.2 Absorption of benzene hydrocarbons fact..