本文選題：變壓吸附 + 碳分子篩�。� 參考：《華東理工大學》2010年碩士論文

【摘要】：本文提出了一種碳分子篩變壓吸附制氮技術的改進工藝,通過設計不對稱中部均壓管路,增加產品氮充壓和產品氮沖洗等工藝步驟,使氮氣產品的純度、裝置的產氮量和氮回收率得到明顯改善,使現(xiàn)有碳分子篩的生產能力和效率得到充分發(fā)揮,降低了成套設備的投資和長期操作費用。在此基礎上,對裝置的工藝參數(shù)進行優(yōu)選,得到的最優(yōu)設計工藝參數(shù)為：吸附劑型號為CMS-220,在空氣壓力為0.8MPa,制取氮氣純度99.99%時,氮沖洗比為10%時,氮氣產率為89.3L/kg-h,氮回收率為23%,為工業(yè)裝置的設計放大提供了有價值的基礎數(shù)據。 采用中部均壓的吸附工藝流程,設計制作了生產規(guī)模為700Nm3/h的NGN-700E型工業(yè)制氮裝置,裝置連續(xù)滿負荷運行一年的結果表明,與常規(guī)均壓工藝流程相比,采用中部均壓工藝NGN-700E變壓吸附制氮裝置制取高純度99.99%氮氣,其氮氣產率和氮氣回收率可分別提高10%和3%,且操作方便,能耗低,氮氣產品價格比較穩(wěn)定,每年可節(jié)省約九百多萬元,經濟效益十分明顯,從投資回報率來看,投資回收期為六個月。
[Abstract]:In this paper, an improved technology for nitrogen production by pressure swing adsorption of carbon molecular sieve is put forward. The purity of nitrogen product can be made by designing asymmetric middle pressure homogenizing pipeline and increasing product nitrogen charging pressure and product nitrogen flushing. The nitrogen production and nitrogen recovery rate of the plant were improved obviously, the production capacity and efficiency of the existing carbon molecular sieve were brought into full play, and the investment and long-term operating cost of the complete equipment were reduced. On this basis, the process parameters of the device are optimized. The optimum design process parameters are as follows: the adsorbent type is CMS-220, when the air pressure is 0.8MPa, the nitrogen purity is 99.9999, the nitrogen washing ratio is 10. The nitrogen yield is 89.3 L / kg 路h, and the nitrogen recovery is 23%, which provides valuable basic data for the design and amplification of industrial units. A NGN-700E type industrial nitrogen production unit with a scale of 700Nm3/h was designed and manufactured by using the adsorption process of the central uniform pressure. The results showed that the unit operated continuously at full load for one year. High purity 99.99% nitrogen was produced by NGN-700E pressure swing adsorption process in the middle part of the plant. The nitrogen yield and nitrogen recovery can be increased by 10% and 3% respectively, and the operation is convenient, the energy consumption is low, and the price of nitrogen product is stable. It can save more than 9 million yuan each year, and the economic benefit is very obvious. From the point of return on investment, the investment payback period is six months.
【學位授予單位】：華東理工大學
【學位級別】：碩士
【學位授予年份】：2010
【分類號】：TQ116.15

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