【摘要】：本文針對吉拉克凝析氣田低溫集氣站在生產(chǎn)中存在的基本問題，即關(guān)鍵組分收率偏低、低溫集氣站能耗高等情況，在分析國內(nèi)外輕烴回收工藝、模擬軟件、最優(yōu)化技術(shù)現(xiàn)狀與發(fā)展的基礎(chǔ)之上建立了低溫集氣站的部分重要單元如三相分離器、壓縮機(jī)、泵和精餾塔、分子篩脫水器等重要單元的HYSYS模型，對該集氣站進(jìn)行了全流程的HYSYS軟件模擬，給出了主要模擬過程和模擬結(jié)果并與現(xiàn)場工況進(jìn)行了對比。通過分析乙二醇循環(huán)量、脫乙烷塔塔底溫度、液化氣塔塔底溫度、回流比、膨脹機(jī)出口壓力等關(guān)鍵參數(shù)變量對優(yōu)化目標(biāo)的影響趨勢和影響程度，同時計算了分子篩脫水模塊的負(fù)荷，得到了主要變量對液化氣、凝析油和外輸天然氣的影響，為優(yōu)化變量的選擇和優(yōu)化變量的調(diào)整與優(yōu)化提供了依據(jù)。建立了丙烷單位能耗下回收率最高和收率最高的工藝計算優(yōu)化模型，分別運用HYSYS內(nèi)部的優(yōu)化模塊和運用節(jié)點分析得到了不同的優(yōu)化方案，，最終經(jīng)過比選得了到滿足最優(yōu)化變量的主要操作參數(shù)。在優(yōu)化目標(biāo)最優(yōu)條件下丙烷和關(guān)鍵組分組分收率大大提高,并且在最大限度上降低了系統(tǒng)能耗，達(dá)到了同時提高收率和降低能耗的目的。
[Abstract]:In view of the basic problems existing in the production of the low temperature gas collection station in Gerac condensate gas field, that is, the low yield of key components and the high energy consumption of the low temperature gas collection station, this paper analyzes the recovery process of light hydrocarbon at home and abroad, and simulates the software. Based on the present situation and development of optimization technology, the HYSYS model of some important units of low temperature gas collection station such as three-phase separator, compressor, pump and distillation column, molecular sieve dehydrator and so on is established. The HYSYS software is used to simulate the whole flow of the gas collecting station. The main simulation process and simulation results are given and compared with the field working conditions. By analyzing the influence trend and influence degree of key parameters such as ethylene glycol circulation, bottom temperature of deethane tower, bottom temperature of LPG tower, reflux ratio, outlet pressure of expander, etc. At the same time, the load of molecular sieve dehydration module was calculated, and the influence of main variables on LPG, condensate oil and natural gas was obtained, which provided the basis for the selection of optimization variables and the adjustment and optimization of optimization variables. A process calculation optimization model with the highest recovery and highest yield per unit energy consumption of propane was established. Different optimization schemes were obtained by using the optimization module inside the HYSYS and the node analysis, respectively. Finally, the main operating parameters that satisfy the optimization variables are selected by comparison. Under the optimal conditions, the yield of propane and key components is greatly improved, and the energy consumption of the system is reduced to the maximum extent, thus achieving the purpose of simultaneously increasing the yield and reducing the energy consumption.
【學(xué)位授予單位】：重慶科技學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE372

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