本文選題：甲乙酮 + 吸收�。� 參考：《北京化工大學(xué)》2015年碩士論文

【摘要】：火炬是石油化工行業(yè)中為處理生產(chǎn)和緊急事故時(shí)排放的可燃性氣體、保證生產(chǎn)裝置和人身安全、減少環(huán)境污染而設(shè)置的一項(xiàng)安全設(shè)施,其作用是將正常生產(chǎn)時(shí)排放出的工業(yè)尾氣及生產(chǎn)事故狀態(tài)下排放的可燃性氣體引入高架火炬頭中進(jìn)行燃燒。由于火炬燃燒每年燒掉的可燃性氣體量相當(dāng)可觀,為充分提高原料利用率和回收有用組分,人們就火炬氣中有用組分回收進(jìn)行了諸多可實(shí)施研究,但由于不同行業(yè)火炬氣組分差異很大,難以統(tǒng)一回收方案,需針對(duì)具體行業(yè)選取適宜方案。本文針對(duì)火炬氣中碳四回收,以液化氣為模擬氣,采用實(shí)驗(yàn)和模擬分析相結(jié)合的方式,系統(tǒng)開(kāi)展了甲乙酮溶劑吸收法回收碳四組分的研究,旨在為火炬氣中丁烷和丁烯的回收提供可借鑒的基礎(chǔ)參考。論文首先在對(duì)火炬氣碳四樣氣分析基礎(chǔ)上,以液化氣為模擬氣。在自行搭建的吸收裝置進(jìn)行了甲乙酮溶劑吸收碳四組分的實(shí)驗(yàn)研究,系統(tǒng)考察了溫度、壓力、液氣比等對(duì)吸收過(guò)程的影響。實(shí)驗(yàn)結(jié)果表明,溫度越高,各組分的吸收率越低,因此,該吸收過(guò)程以低溫操作為宜(30℃)；壓力越高,各組分的吸收率越高,但對(duì)塔設(shè)備的要求越嚴(yán)格,綜合考慮該過(guò)程以1.4 atm操作為宜：各組分的吸收率隨液氣比的增大而增大,當(dāng)增大到某一定值時(shí)數(shù)值幾乎不變,相對(duì)合適的液氣比為5：1�；趯�(shí)驗(yàn)所得數(shù)據(jù)采用Aspen Plus進(jìn)行流程模擬分析,模擬過(guò)程中的物性參數(shù)在與實(shí)驗(yàn)數(shù)據(jù)對(duì)比基礎(chǔ)上,選用RK-SOAVE方法估算。系統(tǒng)考察了不同操作條件對(duì)各組分吸收率的影響,最終獲得的相對(duì)適宜操作條件為：進(jìn)料氣(液化氣)流量30 1/h,吸收劑甲乙酮進(jìn)料量為135 1/h；進(jìn)料氣(液化氣)的進(jìn)料溫度為室溫25℃,吸收劑甲乙酮的進(jìn)料溫度為15℃；吸收塔在常壓下操作；吸收塔塔板數(shù)為12塊,液化氣進(jìn)料板為第13塊板(塔釜進(jìn)料),吸收劑甲乙酮進(jìn)料板為第1塊板(塔頂進(jìn)料)。結(jié)合實(shí)驗(yàn)和Aspen Plus模擬分析結(jié)果,本文對(duì)揚(yáng)子公司中的烯烴火炬氣和催化火炬氣進(jìn)行了碳四回收優(yōu)化,確定的適宜操作條件為：火炬氣的進(jìn)氣量為100 kg/h,吸收劑甲乙酮的進(jìn)料量為1100 kg/h(即液氣比為11：1)；火炬氣的進(jìn)料位置為塔底進(jìn)料,甲乙酮的進(jìn)料位置為塔頂進(jìn)料；火炬氣的進(jìn)料溫度為常溫25℃,甲乙酮的進(jìn)料溫度為15℃；吸收塔為常壓塔,全塔理論塔板數(shù)為8塊。丁烷與丁烯的回收率均大于99%。
[Abstract]:The torch is a safety facility set up in the petrochemical industry to deal with the combustible gas emitted during production and emergency, to ensure the safety of production equipment and personal safety, and to reduce environmental pollution. Its function is to introduce industrial tail gas from normal production and combustible gas from production accident into the overhead torch head for combustion. Since the amount of combustible gas burned annually by torch combustion is considerable, in order to fully improve the utilization of raw materials and recover useful components, people have carried out many practical studies on the recovery of useful components in torch gas. However, it is difficult to unify the recovery scheme because of the different components of flare gas in different industries, so it is necessary to select suitable schemes for specific industries. In this paper, the recovery of carbon 4 from torch gas by solvent absorption of methyl ethyl ketone was studied systematically by using liquefied petroleum gas as simulated gas and by combining experiment and simulation analysis. In order to provide reference for the recovery of butane and butene in torch gas. Firstly, based on the analysis of the four carbon samples of torch gas, the liquefied gas is used as the simulated gas. The effects of temperature, pressure and the ratio of liquid to gas on the absorption process of methyl ethyl ketone solvent were investigated. The experimental results show that the higher the temperature, the lower the absorption rate of each component. Therefore, the absorption process is suitable for low temperature operation at 30 鈩，

本文編號(hào)：1853924