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发明公开
CN102654347A 一种丙烷预冷双混合冷剂串联液化系统 无效 - 驳回

一种丙烷预冷双混合冷剂串联液化系统
摘要：
本发明公开了一种丙烷预冷双混合冷剂串联液化系统。所述液化系统包括预冷冷箱a和预冷冷箱b、液化冷箱a和液化冷箱b、深冷冷箱a和深冷冷箱b、丙烷预冷循环机构、混合冷剂液化循环机构和混合冷剂深冷循环机构；所述丙烷预冷循环机构包括三级压缩单元；所述混合冷剂液化循环机构包括一级压缩单元；所述混合冷剂深冷循环机构包括一级压缩单元；本发明提供的液化系统采用丙烷预冷双混合冷剂串联制冷方式，液化和过冷循环分别采用独立的混合冷剂制冷循环，有效得均衡了三台压缩机组（1台预冷循环压缩机、1台液化循环压缩机及1台过冷循环压缩机）的功率分配，打破了由于一台压缩机功率过大而影响整个液化装置的处理能力的限制，同时提高了装置的可操作性。
摘要（英）：

The invention discloses a propane pre-cooling double-mixing refrigerant serial-connection liquefaction system, which comprises a pre-cooling cold box a, a pre-cooling cold box b, a liquefaction cold box a, a liquefaction cold box b, a deep-cooling cold box a, a deep-cooling cold box b, a propane pre-cooling circulating mechanism, a mixed refrigerant liquefaction circulating mechanism and a mixed refrigeration deep-cooling circulating mechanism, wherein the propane pre-cooling circulating mechanism comprises a three-grade compression unit; the mixed refrigerant liquefaction circulating mechanism comprises a first-grade compression unit; and the mixed refrigeration deep-cooling circulating mechanism comprises a first-grade compression unit. The liquefaction system provided by the invention adopts the propane pre-cooling double-mixing refrigerant parallel-connection refrigeration mode, and liquefaction and undercooling circulation respectively adopt independent mixing refrigerant refrigeration circulation; the power distribution of three compressor units (one pre-cooling circulation compressor, one liquefaction circulation compressor and one undercooling circulation compressor) is effectively balanced; the limitation on that the processing capability of the whole liquefaction device is affected because one compressor has too large power can be broken through; and meanwhile the maneuverability of the device can be improved.

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