環氧乙烷工業設計

化工論文編號:HG006  字數:20472,頁數:67
目 錄

1 文獻綜述..........................................................................1
1.1 環氧乙烷的用途性質及生產原理....................................................1
1.1.1 環氧乙烷的用途................................................................1
1.1.2 環氧乙烷的性質................................................................1
1.1.3 環氧乙烷的生產原理 ...........................................................1
1.2 工藝流程敘述 ...................................................................2
1.3 環氧乙烷的工業生產方法..........................................................3
1.3.1 氯醇法 .......................................................................3
1.3.2 乙烯直接氧化法................................................................3
2 物料衡算..........................................................................5
2.1 物料衡算流程簡圖................................................................5
2.2 物料衡算 .......................................................................5
2.3 物料衡算表 .....................................................................6
2.3.1 進料氣體 .....................................................................6
2.3.2 進料/產品換熱器...............................................................7
2.3.3 反應器........................................................................8
2.3.4 產品第一冷卻器 ...............................................................8
2.3.5 產品第二冷卻器................................................................8
2.3.6 EO吸收塔......................................................................9
2.3.7 CO2吸收塔.....................................................................11
2.3.8 E-207、208換熱器..............................................................11
2.3.9 EO解吸塔 .....................................................................12
2.3.10 EO解吸塔塔頂冷卻器E301、E302A ...............................................13
2.3.11 輕組分脫除塔 ................................................................14
2.3.12 EO精制塔.................................................................... 16
3 熱量及設備計算 ...................................................................19
3.1 反應器的熱量及設備計算 .........................................................19
3.2 EO精餾塔的設計計算..............................................................22
3.2.1 塔板工藝尺寸計算..............................................................22
3.3 EO精制塔塔底再沸器的設計計算 ...................................................30
3.3.1 初算換熱面積..................................................................30
3.3.2 核算傳熱系數 .................................................................31
4 附錄 .............................................................................34
4.1 英文文獻原文....................................................................34
4.2 英文文獻原文翻譯................................................................38
4.3 計算機程序 .....................................................................43

內容摘要

本設計對年產5.0萬噸環氧乙烷合成工段進行了工藝設計。并對環氧乙烷的生產方法、生產原理、流程路線及主要設備等進行了論述和計算。
 環氧乙烷是乙烯的重要衍生物，主要用作有機合成的中間體和原料，用于制造乙二醇、表面活性劑、洗滌劑、增塑劑以及樹脂等。我國環氧乙烷生產能力有限，每年都要大量進口環氧乙烷產品來滿足國內市場的需求。
環氧乙烷是乙烯衍生物中的重要基礎化工原料，它主要用來生產乙二醇，因此環氧乙烷（EO）/乙二醇（EG）工藝是石油化工中的重要工藝之一。我國目前擁有大小不等的EO/EG生產裝置11套，但相比于國外的同類裝置，這些裝置的 工藝落后，能耗和水耗都較高，因此研究EO/EG工藝優化以降低生產成本，具有非常現實的意義。環氧乙烷(EO)是衍生物中僅次于聚乙烯和聚氯乙烯的重要石化產品，主要用于生產聚酯纖維、聚酯樹脂和汽車用防凍劑的原料乙二醇。還可以衍生出幾十種重要的精細石油化工中間體，廣泛應用于洗染、電子、醫藥、農藥、紡織、造紙、汽車、石油開采與煉制等眾多領域。本設計的工藝流程分為四個系統，分別為:反應系統、環氧乙烷吸收解吸系統、二氧化碳吸收解吸系統和環氧乙烷精制系統。并以這四個系統為主線，對工藝流程進行了敘述。
本設計的專題任務為環氧乙烷脫輕組分塔和環氧乙烷精制塔塔底再沸器，針對專題任務做了熱量衡算和設備計算，對設備參數進行了校核，并根據計算的結果對換熱器，即環氧乙烷精制塔底再沸器進行了設備選型。

關鍵詞：環氧乙烷； 精制塔； 脫輕組分塔； 塔底再沸器

Abstract

The design of an annual output of 50,000 tons of ethylene oxide synthesis of a Section of the design. And ethylene oxide production methods, production principles, processes and major routes were discussed, such as equipment and computing.
Ethylene oxide is a major ethylene derivatives, mainly used for organic synthesis of intermediates and raw materials, used in the manufacture of ethylene glycol, surfactants, detergents, plasticizers and resin. China's ethylene oxide production capacity is limited, every year importing large quantities of ethylene oxide products to meet domestic market demands. .
Ethylene oxide derivatives of ethylene is an important basic chemical raw materials, mainly used in the production of ethylene glycol, ethylene oxide (EO) / ethylene glycol (EG) process is the petrochemical industry in one of the important process . China now has the size EO / EG plant 11 sets, but when compared to similar foreign devices, the technology behind these devices, energy and water consumption are higher, the study EO / EG process optimization to reduce the cost of production , Has very practical significance. Ethylene oxide (EO) derivatives is second only to polyethylene and polyvinyl chloride in a major petrochemical products, mainly used in the production of polyester fiber, polyester resins and the raw materials for vehicles glycol antifreeze. Can also led to dozens of important fine petrochemical intermediates, widely used in Xiran, electronics, pharmaceuticals, agricultural chemicals, textiles, paper, automobiles, oil exploration and refining, and other fields.
The design process is divided into four systems, are: response system, ethylene oxide absorption desorption system, absorbing carbon dioxide and ethylene oxide desorption system refining system. And the four systems to the main line, a description of the process.
The design of the thematic mandates removal of light component tower for ethylene oxide and ethylene oxide tower at the end of refining Tata reboiler, for thematic mandate to do the heat balance and equipment, the equipment parameters of the check, and in accordance with The results of the heat exchanger, that is, ethylene oxide refining Tata reboiler at the end of a selection of equipment.

Keywords:   EO（ethylene oxide）; removal of light component tower;  Refining tower; Bottom reboiler