本文選題：液化天然氣 + 工藝計算��； 參考：《東北石油大學》2015年碩士論文

【摘要】：天然氣作為清潔、高效和污染小的能源,代替其他燃料,可以大大減少CO2、SO2、NOx及煙塵的排放量,這對改善大氣環(huán)境,減輕溫室效應(yīng)有著十分明顯的作用,天然氣以其高效、潔凈、方便等優(yōu)勢正逐漸被大家認可,開發(fā)和利用天然氣是當今世界能源發(fā)展的潮流。我國天然氣在一次能源消費結(jié)構(gòu)中所占比例呈上升趨勢。天然氣常溫下以氣態(tài)形式存在,而產(chǎn)地往往遠離用戶,運輸主要靠管道輸送。液化天然氣技術(shù)的出現(xiàn)為天然氣的應(yīng)用提供了很大的可能性,在常壓下將天然氣深冷到-162℃,深冷技術(shù)使天然氣以液態(tài)形式存在,即液化天然氣(LNG),其體積縮小為氣態(tài)時的1/625,大大方便了天然氣的運輸和儲存。天然氣中常常含有游離水、氣態(tài)水或飽和水。從而增加集氣管路壓降,嚴重時將形成水合物堵塞管道。當氣體中含有酸性氣體時,液態(tài)水會加速H2S和CO2對管道和設(shè)備的嚴重腐蝕。天然氣在液化前必須進行脫水處理。所以必須對天然氣進行脫水處理,目前脫水方法主要包括低溫冷凝法、溶劑吸收脫水法、固體吸附脫水法與膜法脫水法,目前應(yīng)用最為廣泛的是固體吸附脫水法中的分子篩脫水法,文章對兩種分子篩脫水工藝(變壓再生和變溫再生)進行了對比,最終選用變壓再生來進行設(shè)計。通過流程軟件HYSYS對脫水流程進行流程模擬,對流程中涉及的設(shè)備進行選型和計算,設(shè)計出符合天然氣脫水工藝規(guī)范中要求的脫水工藝流程及裝置,以確保天然氣液化生產(chǎn)裝置的正常運行。
[Abstract]:Natural gas, as a clean, efficient and less polluting energy source, can greatly reduce the emission of CO _ 2o _ 2SO _ 2 no _ x and soot, which can greatly reduce the emission of CO _ 2o _ 2SO _ 2N _ x and soot, which has a very obvious effect on improving the atmospheric environment and reducing Greenhouse Effect.Convenience and other advantages are gradually recognized, the development and utilization of natural gas is the trend of energy development in the world.The proportion of natural gas in primary energy consumption in China is on the rise.Natural gas exists in the form of gas at room temperature, and the origin is often far away from the user, and transportation mainly depends on pipeline transportation.The emergence of liquefied natural gas (LNG) technology provides a great possibility for the application of natural gas. Natural gas is cryogenic to -162 鈩，

本文編號：1761530