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发明公开
CN106225423A 一种降低空分装置能耗的装置及方法 有权

一种降低空分装置能耗的装置及方法
摘要：
一种降低空分装置能耗的装置及方法，所述的空分装置主要包括压缩机、分子筛纯化器、透平膨胀机、板式换热器、精馏塔以及连接管路，所述的精馏塔顶部通过氮气接出管路连接于板式换热器，并在该板式换热器的氮气接出口用氮气管路接入一氧氮液化装置，并在经过所述的氧氮液化装置后用液氮管路接入液氮储槽；所述的液氮储槽通过液氮接出管路连接一液氮泵，该液氮泵通过液氮连接管路连接于精馏塔的上塔上部；所述的精馏塔上塔底部通过氧气接出管路连接于板式换热器，该板式换热器的氧气接出口用氧气管路连接于氧氮液化装置，并在经过所述的氧氮液化装置后用液氧管路接入液氧储槽；本发明具有节能降耗、操作简单的特点，实用性和经济性较之有了显著提高。
摘要（英）：

The invention discloses a device and a method for reducing energy consumption of an air separation device. The air separation device mainly comprises a compressor, a molecular sieve purifier, a turbo expander, a plate heat exchanger, a rectifying tower and a connecting pipeline, wherein the top of the rectifying tower is connected with the plate heat exchanger through a nitrogen outlet pipeline; a nitrogen outlet of the plate heat exchanger is connected with an oxygen nitrogen liquefaction device through a nitrogen pipeline, and is connected with a liquid nitrogen storage tank through a liquid nitrogen pipeline after passing through the oxygen nitrogen liquefaction device; the liquid nitrogen storage tank is connected with a liquid nitrogen pump through a liquid nitrogen outlet pipeline; the liquid nitrogen pump is connected with the upper part of an upper tower of the rectifying tower through a liquid nitrogen connecting pipeline; the bottom of the upper tower of the rectifying tower is connected with the plate heat exchanger through an oxygen outlet pipeline; and an oxygen outlet of the plate heat exchanger is connected with the oxygen nitrogen liquefaction device through an oxygen pipeline, and is connected with a liquid oxygen storage tank through a liquid oxygen pipeline after passing through the oxygen nitrogen liquefaction device. The device has the characteristics of energy saving, consumption reduction and simple operation, and the practicability and economy are remarkably improved relatively.

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