Low-temperature liquefaction system for dual cycle of mixed working medium

Low-temperature liquefaction system for dual cycle of mixed working medium

CN
  • CN 101,893,344 A
  • Filed: 06/24/2010
  • Published: 11/24/2010
  • Est. Priority Date: 06/24/2010
  • Status: Active Application
First Claim
Patent Images

1. the bicirculating low-temperature liquefaction system of mixed working fluid comprises first refrigeration cycle, second refrigeration cycle and unstripped gas pipeline;

  • Described first refrigeration cycle uses hybrid refrigeration working medium, and it is made up of first compressor (CU1), first condenser (AC1), main heat exchanger (HX1) and first throttle valve (V1);

    Described first compressor (CU1) high-pressure outlet connects first condenser (AC1) inlet, first condenser (AC1) outlet connects main heat exchanger (HX1) first high pressure entry, main heat exchanger (HX1) first high-pressure outlet connects first throttle valve (V1) inlet, first throttle valve (V1) outlet connects main heat exchanger (HX1) low-pressure inlet, and main heat exchanger (HX1) low tension outlet connects first compressor (CU1) low-pressure inlet and forms first refrigeration cycle;

    Described hybrid refrigeration working medium is by two kinds in nitrogen, methane, ethane, propane and the butane, three kinds or the multiple hybrid refrigeration working medium of forming;

    Described second kind of refrigeration cycle is used non-flammable pure working medium or non-flammable mixed working fluid, and it is made up of second compressor (CU2), second condenser (AC2), distributed heat exchanger (HX2) and second throttle (V2);

    Described second compressor (CU2) high-pressure outlet connects second condenser (AC2) inlet, second condenser (AC2) outlet connects main heat exchanger (HX1) second high pressure entry, main heat exchanger (HX1) second high-pressure outlet connects second throttle (V2) inlet, second throttle (V2) outlet connects distributed heat exchanger (HX2) low-pressure inlet, and distributed heat exchanger (HX2) low tension outlet connects second compressor (CU2) low-pressure inlet and forms second refrigeration cycle;

    Described non-flammable pure working medium is nitrogen, argon gas or R14;

    Described non-flammable mixed working fluid is the mist of any two or three kinds of gases among nitrogen, argon gas and the R14;

    Described unstripped gas pipeline is made up of distributed heat exchanger (HX2) and pipeline, and its connected mode is;

    the unstripped gas after dust removal process connects distributed heat exchanger (HX2) inlet by the road, and the outlet of distributed heat exchanger (HX2) is the unstripped gas outlet of liquefaction.

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