CN205062017U - Integrated device is retrieved to natural gas liquefaction and lime set - Google Patents

Integrated device is retrieved to natural gas liquefaction and lime set Download PDF

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Publication number
CN205062017U
CN205062017U CN201520864727.4U CN201520864727U CN205062017U CN 205062017 U CN205062017 U CN 205062017U CN 201520864727 U CN201520864727 U CN 201520864727U CN 205062017 U CN205062017 U CN 205062017U
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separator
outlet
natural gas
gas liquefaction
communicated
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郭俊峰
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Beijing Petrochemical Engineering Co Ltd
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Beijing Petrochemical Engineering Co Ltd
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Priority to RU2018109328A priority patent/RU2018109328A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0233—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of CnHm with 1 carbon atom or more
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
    • F25J1/0052—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream
    • F25J1/0055—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream originating from an incorporated cascade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0211—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
    • F25J1/0212—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a single flow MCR cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0229—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock
    • F25J1/0231—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock for the working-up of the hydrocarbon feed, e.g. reinjection of heavier hydrocarbons into the liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0235—Heat exchange integration
    • F25J1/0237—Heat exchange integration integrating refrigeration provided for liquefaction and purification/treatment of the gas to be liquefied, e.g. heavy hydrocarbon removal from natural gas
    • F25J1/0238—Purification or treatment step is integrated within one refrigeration cycle only, i.e. the same or single refrigeration cycle provides feed gas cooling (if present) and overhead gas cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0235—Heat exchange integration
    • F25J1/0242—Waste heat recovery, e.g. from heat of compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F25J1/0296—Removal of the heat of compression, e.g. within an inter- or afterstage-cooler against an ambient heat sink
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0204—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the feed stream
    • F25J3/0209—Natural gas or substitute natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0242—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of CnHm with 3 carbon atoms or more
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/02—Processes or apparatus using separation by rectification in a single pressure main column system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/70—Refluxing the column with a condensed part of the feed stream, i.e. fractionator top is stripped or self-rectified
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/06—Splitting of the feed stream, e.g. for treating or cooling in different ways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/04—Recovery of liquid products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/18—External refrigeration with incorporated cascade loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/66—Closed external refrigeration cycle with multi component refrigerant [MCR], e.g. mixture of hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • F25J2270/902—Details about the refrigeration cycle used, e.g. composition of refrigerant, arrangement of compressors or cascade, make up sources, use of reflux exchangers etc.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The utility model relates to an integrated device is retrieved to natural gas liquefaction and lime set, including mixing refrigeration natural gas liquefaction device, the heavy hydrocarbon piece -rate system, natural gas lime set recovery system, natural gas liquefaction control system, wherein including a cold box in the mixed refrigeration natural gas liquefaction device, inside mutual spaced refrigerant channel and the natural gas cooling channel of being provided with of cold box, flash trapping stage natural gas liquefaction passageway, the grade separation natural gas liquefaction passageway, the export of first natural gas and the flash trapping stage natural gas liquefaction passageway intercommunication of heavy hydrocarbon piece -rate system, the export of liquid heavy hydrocarbon and the natural gas lime set recovery system intercommunication of heavy hydrocarbon piece -rate system, natural gas lime set recovery system's export of the natural gas of second and grade separation natural gas liquefaction passageway intercommunication, flash trapping stage natural gas liquefaction passageway, the export and the natural gas liquefaction control system intercommunication of grade separation natural gas liquefaction passageway. The device realizes natural gas liquefaction and lime set and retrieves the integration, and process flow is simple, the flexible operation, the energy consumption is low, the investment is low.

Description

Natural gas liquefaction and lime set reclaim integrated apparatus
Technical field
The utility model relates to natural gas liquefaction and lime set recovery technology field, particularly relates to a kind of natural gas liquefaction and lime set recovery integrated apparatus.
Background technology
Natural gas liquids (composition is based on methane) is a kind of clean fuel, in field widespread uses such as industrial, civilian, automobile fuels.Many target markets away from natural air-air source ground all prepare to utilize natural gas liquids to solve industry, civilian, automobile fuel problem at present.Gas reducing liquid (NaturalGasLiquid, NGL), also referred to as natural gas liquids or natural gas liquids, China's custom is called lighter hydrocarbons, refers to the mixture of light hydrocarbons being main ingredient with propane, butane obtained from Sweet natural gas low temperature separation process.Gas reducing liquid (NGL) can isolate propane, butane or the third butane mixture (LPG) and natural gasoline (condensate oil) further.Be used for refrigeration, deep cooling industry.
Current domestic and international existing natural gas liquefaction and the large multiple process routes of gas reducing liquid (NGL) retrieving arrangement are complicated, equipment is many, flow control point and trouble spot many, level of automation is low, drive debugging, operating process is complicated, cause taking up an area large, quantities is large, investment is large.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of natural gas liquefaction and lime set recovery integrated apparatus, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of natural gas liquefaction and lime set to reclaim integrated apparatus, and this device realizes natural gas liquefaction and lime set reclaims integration, and technical process is simple, flexible operation, energy consumption are low, it is low to invest.
The purpose of this utility model is achieved in that a kind of natural gas liquefaction and lime set reclaim integrated apparatus, comprising:
Hybrid refrigeration natural gas liquefaction device, comprise refrigerant compression unit, described refrigerant compression unit includes one section of coolant compressor and two sections of coolant compressors, the outlet of described one section of coolant compressor is connected with the first separator, the outlet of described two sections of coolant compressors is connected with the second separator, the outlet of described first separator and the outlet of described second separator are all connected to an ice chest, described cold box interior is provided with spaced refrigerant pass and Sweet natural gas cooling channel, flash trapping stage natural gas liquefaction passage, the second-order separation natural gas liquefaction passage,
Heavy hydrocarbon separation system, comprise a heavy hydrocarbon separator be communicated with described Sweet natural gas cooling channel, first gas outlet at described heavy hydrocarbon separator top is communicated with the entrance of described flash trapping stage natural gas liquefaction passage, and the bottom of described heavy hydrocarbon separator is provided with the outlet of liquid heavy hydrocarbon;
Gas reducing liquid recovery system, comprise the deethanizing column of one and described liquid heavy hydrocarbon outlet, second gas outlet at described deethanizing column top is communicated with the entrance of described the second-order separation natural gas liquefaction passage, the bottom of described deethanizing column is provided with gas reducing liquid outlet, described deethanizing column is connected with a reboiler by described gas reducing liquid outlet, and the heat source passages of described reboiler is series between the outlet of described one section of coolant compressor and the entrance of described first separator; Described gas reducing liquid outlet is also connected with gas reducing liquid and reclaims storing device;
Natural gas liquids networked control systems, the entrance of described natural gas liquids networked control systems and described flash trapping stage natural gas liquefaction passage, described the second-order separation natural gas liquefaction channel connection, the outlet of described natural gas liquids networked control systems is communicated with natural gas liquids storing device.
In a better embodiment of the present utility model, described ice chest comprises the first housing, described first enclosure interior is provided with an interchanger, described interchanger inside is disposed with described Sweet natural gas cooling channel from top to bottom, described flash trapping stage natural gas liquefaction passage and described the second-order separation natural gas liquefaction passage, described interchanger inside is also provided with described refrigerant pass, described refrigerant pass comprises high pressure gas liquid phase refrigerant pass, high-pressure liquid phase refrigerant pass, middle hydraulic fluid phase refrigerant pass and refrigeration agent reflux passage, described high pressure gas liquid phase refrigerant pass, described refrigeration agent reflux passage runs through described interchanger from top to bottom, described first enclosure interior is provided with the first mix refrigerant separator, the second mix refrigerant separator and the 3rd mix refrigerant separator from bottom to up,
The outlet of described high pressure gas liquid phase refrigerant pass is communicated with described first mix refrigerant separator, the outlet of described first mix refrigerant separator and described refrigeration agent reflux channel connection; The outlet of described high-pressure liquid phase refrigerant pass is communicated with described second mix refrigerant separator, the outlet of described second mix refrigerant separator and described refrigeration agent reflux channel connection; The outlet of described middle hydraulic fluid phase refrigerant pass is communicated with described 3rd mix refrigerant separator, the outlet of described 3rd mix refrigerant separator and described refrigeration agent reflux channel connection.
In a better embodiment of the present utility model, described hybrid refrigeration natural gas liquefaction device also comprises refrigeration agent and fills mouth, described refrigeration agent fills between mouth and described one section of coolant compressor and is connected with the 3rd separator, and the outlet of described refrigeration agent reflux passage is communicated with the entrance of described 3rd separator.
In a better embodiment of the present utility model, described first separator top is provided with the first separator gaseous phase outlet, described first separator bottom is provided with the first separator liquid phase outlet, described first separator gaseous phase outlet is communicated with the entrance of described two sections of coolant compressors, described first separator gaseous phase outlet is also communicated with the entrance of described 3rd separator by one section of compressor anti-surge valve, and described first separator liquid phase outlet is communicated with the entrance of described middle hydraulic fluid phase refrigerant pass;
Described second separator top is provided with the second separator gaseous phase outlet, described second separator bottom is provided with the second separator liquid phase outlet, described second separator gaseous phase outlet is communicated with the entrance of described high pressure gas liquid phase refrigerant pass, described second separator gaseous phase outlet is also communicated with the entrance of described second separator by two sections of compressor anti-surge valves, and described second separator liquid phase outlet is communicated with the entrance of described high-pressure liquid phase refrigerant pass.
In a better embodiment of the present utility model, described first separator is connected with the first separator liquid level controller, between the outlet of described middle hydraulic fluid phase refrigerant pass and the 3rd mix refrigerant separator, is connected with the first separator liquid level control valve; Described second separator gaseous phase outlet is connected with high pressure gas liquid phase refrigerant flow control, is connected with high pressure gas liquid phase refrigerant flow control valve between the outlet of described high pressure gas liquid phase refrigerant pass and described first mix refrigerant separator; Described second separator liquid phase outlet is connected with high-pressure liquid phase refrigerant flow control, is serially connected with high-pressure liquid phase refrigerant flow control valve between the outlet of described high-pressure liquid phase refrigerant pass and described second mix refrigerant separator.
In a better embodiment of the present utility model, be serially connected with the first water cooler between the outlet of described heat source passages and the entrance of described first separator, between the outlet of described two sections of coolant compressors and the entrance of described second separator, be serially connected with the second water cooler.
In a better embodiment of the present utility model, described first mix refrigerant separator top is provided with the first mix refrigerant separator gaseous phase outlet, described first mix refrigerant separator bottom is provided with the first mix refrigerant separator liquid phase outlet, described first mix refrigerant separator gaseous phase outlet is communicated with the middle and lower part entrance of a mixing tank, described first mix refrigerant separator liquid phase outlet is communicated with the middle and upper part entrance of described mixing tank, the outlet at described mixing tank top and described refrigeration agent reflux channel connection.
In a better embodiment of the present utility model, described reboiler inside is also provided with lime set and boils passage again, described lime set is boiled the entrance of passage and described gas reducing liquid outlet again, and boil the again outlet of passage of described lime set is communicated with the lower sidewall of described deethanizing column.
In a better embodiment of the present utility model, described deethanizing column is connected with reboiler temperature controller, the ingress of described heat source passages is connected with reboiler temperature control valve; Described deethanizing column is also connected with deethanizing column fluid level controller, the outlet of described gas reducing liquid also and described gas reducing liquid reclaim between storing device and be serially connected with gas reducing liquid water cooler, the outlet of described gas reducing liquid water cooler and described gas reducing liquid reclaim between storing device and are serially connected with deethanizing column level control valve.
In a better embodiment of the present utility model, described natural gas liquids networked control systems includes the first gas discharge controller that mouth is connected with the outlet of described flash trapping stage natural gas liquefaction passage, the first natural flow control valves is connected with after described first gas discharge controller, described natural gas liquids networked control systems also comprises the second natural gas flow amount controller be connected with the outlet of described the second-order separation natural gas liquefaction passage, GPCV is connected with after described second natural gas flow amount controller, the natural pressure force controller that described GPCV and is connected to described second gas outlet is electrically connected, the outlet of described first natural flow control valves is all communicated with described natural gas liquids storing device with the outlet of described GPCV.
From the above mentioned, natural gas liquefaction of the present utility model and lime set recovery integrated apparatus have following beneficial effect:
(1) this natural gas liquefaction and lime set reclaim that integrated apparatus technical process is simple, flexible operation, energy consumption are low, ice chest in the hybrid refrigeration natural gas liquefaction device adopted is made up of plate-fin heat exchanger, structural arrangement is compact, multiple flow heat exchange can be realized, efficiency is high and have a narrow range of temperature, two phase flow is uniformly distributed, and energy-saving effect is obvious;
(2) this natural gas liquefaction and lime set reclaim integrated apparatus and adopt skid modular design, and maximize and realize plug and play integrated solution, equipment is few and degree domestic is high, and equipment investment capital is few; Take up an area little, quantities is few, construction investment is low;
(3) this natural gas liquefaction and lime set reclaim integrated apparatus and fully reclaim mixed hydrocarbon product, are conducive to increasing the performance of enterprises.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: for natural gas liquefaction of the present utility model and lime set reclaim the schematic diagram of integrated apparatus.
Fig. 2: be the schematic diagram of hybrid refrigeration natural gas liquefaction device of the present utility model.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.
As shown in Figure 1, the natural gas liquefaction that the utility model provides and lime set reclaim integrated apparatus 100, comprise hybrid refrigeration natural gas liquefaction device 1, heavy hydrocarbon separation system 2, gas reducing liquid recovery system 3, natural gas liquids networked control systems 4.
As shown in Figure 1 and Figure 2, hybrid refrigeration natural gas liquefaction device 1 comprises refrigerant compression unit 11, refrigerant compression unit 11 includes one section of coolant compressor 111 and two sections of coolant compressors 112, in the present embodiment, one section of coolant compressor 111 and two sections of coolant compressors 112 are radial compressors.The outlet of one section of coolant compressor 111 is connected with the first separator 12, the outlet of two sections of coolant compressors 112 is connected with the second separator 13, the outlet of the first separator 12 and the outlet of the second separator 13 are all connected to an ice chest 14, and ice chest 14 inside is provided with spaced refrigerant pass 141 and Sweet natural gas cooling channel 142, flash trapping stage natural gas liquefaction passage 143, the second-order separation natural gas liquefaction passage 144.Sweet natural gas enters from the entrance of Sweet natural gas cooling channel 142, at the cooling effect borehole cooling of refrigerant pass 141 to the temperature of heavy hydrocarbon condensation in Sweet natural gas.
Heavy hydrocarbon separation system 2 comprises a heavy hydrocarbon separator 21 be communicated with Sweet natural gas cooling channel 142, first gas outlet 211 at heavy hydrocarbon separator 21 top is communicated with the entrance of flash trapping stage natural gas liquefaction passage 143, and the bottom of heavy hydrocarbon separator 21 is provided with liquid heavy hydrocarbon outlet 212.Sweet natural gas is lowered the temperature through Sweet natural gas cooling channel 142, enter heavy hydrocarbon separator 21 after heavy hydrocarbon condensation liquefaction, in heavy hydrocarbon separator 21, heavy hydrocarbon is separated, the the first gas outlet 211 flash trapping stage natural gas liquefaction passage 143 entered in ice chest 14 being separated the natural gas via top of heavy hydrocarbon continues cooling liquefaction, and the heavy hydrocarbon separated enters gas reducing liquid recovery system 3 through liquid heavy hydrocarbon outlet 212.For the ease of heavy hydrocarbon separator 21 Liquid level, heavy hydrocarbon separator 21 is connected with heavy hydrocarbon separator liquid level controller 22, between liquid heavy hydrocarbon outlet 212 and gas reducing liquid recovery system 3, is serially connected with heavy hydrocarbon separator liquid level control valve 23.
Gas reducing liquid recovery system 3 comprises one and exports 212 deethanizing columns be communicated with 31 with liquid heavy hydrocarbon, second gas outlet 311 at deethanizing column 31 top is communicated with the entrance of the second-order separation natural gas liquefaction passage 144, the bottom of deethanizing column 31 is provided with gas reducing liquid outlet 312, deethanizing column 31 is connected with a reboiler 32 by gas reducing liquid outlet 312, and the heat source passages 321 of reboiler 32 is series between the outlet of one section of coolant compressor 111 and the entrance of the first separator 12; Gas reducing liquid outlet 312 is also connected with gas reducing liquid and reclaims storing device 33.In the present embodiment, it is a gas reducing liquid storage tank that gas reducing liquid reclaims storing device 33, reclaim between storing device 33 in gas reducing liquid outlet 312 and gas reducing liquid and be serially connected with gas reducing liquid water cooler 34, the outlet that gas reducing liquid reclaims storing device 33 is generally connected with gas reducing liquid Loading Pump 35, so that gas reducing liquid pressurization pumps into gas reducing liquid conveyer 36 (prior art).Secondary separation is carried out in the power heat source effect of liquid heavy hydrocarbon by reboiler 32 in deethanizing column 31, the Sweet natural gas containing components such as ethane separated continues cooling liquefaction by the second-order separation natural gas liquefaction passage 144 that the second gas outlet 311 enters in ice chest 14, and the gas reducing liquid separated enters gas reducing liquid through gas reducing liquid outlet 312 and reclaims storing device 33.
The entrance of natural gas liquids networked control systems 4 is communicated with flash trapping stage natural gas liquefaction passage 143, the second-order separation natural gas liquefaction passage 144, and the outlet of natural gas liquids networked control systems 4 is communicated with natural gas liquids storing device 5.In the present embodiment, natural gas liquids networked control systems 4 comprises the first gas discharge controller 41 that entrance is connected with the outlet of described flash trapping stage natural gas liquefaction passage 143, the first natural flow control valves 42 is connected with after first gas discharge controller 41, natural gas liquids networked control systems 4 also comprises the second natural gas flow amount controller 43 that entrance is connected with the outlet of the second-order separation natural gas liquefaction passage 144, GPCV 45 is connected with after second natural gas flow amount controller 43, the natural pressure force controller 44 that GPCV 45 and is connected to the second gas outlet 311 is electrically connected.The outlet of the first natural flow control valves 42 is all communicated with natural gas liquids storing device 5 with the outlet of GPCV 45.The liquefaction amount of Sweet natural gas is controlled by natural gas liquids networked control systems 4.
Further, as shown in Figure 2, ice chest 14 comprises the first housing 140, first housing 140 inside and is provided with an interchanger 145, and in the present embodiment, interchanger 145 is plate-fin heat exchanger.Interchanger 145 inside is disposed with described Sweet natural gas cooling channel 142, described flash trapping stage natural gas liquefaction passage 143 and described the second-order separation natural gas liquefaction passage 144 from top to bottom, interchanger 145 inside is also provided with described refrigerant pass 141, refrigerant pass 141 comprises high pressure gas liquid phase refrigerant pass 1411, high-pressure liquid phase refrigerant pass 1412, middle hydraulic fluid phase refrigerant pass 1413 and refrigeration agent reflux passage 1414, and high pressure gas liquid phase refrigerant pass 1411, refrigeration agent reflux passage 1414 run through interchanger 145 from top to bottom; First housing 140 is provided with the first mix refrigerant separator 146, second mix refrigerant separator 147 and the 3rd mix refrigerant separator 148 from bottom to up; The outlet of high pressure gas liquid phase refrigerant pass 1411 is communicated with the first mix refrigerant separator 146, and the outlet of the first mix refrigerant separator 146 is communicated with refrigeration agent reflux passage 1414; The outlet of high-pressure liquid phase refrigerant pass 1412 is communicated with the second mix refrigerant separator 147, and the outlet of the second mix refrigerant separator 147 is communicated with refrigeration agent reflux passage 1414; The outlet of middle hydraulic fluid phase refrigerant pass 1413 is communicated with the 3rd mix refrigerant separator 148, and the outlet of the 3rd mix refrigerant separator 148 is communicated with refrigeration agent reflux passage 1414.Ice chest 14 can realize multiple flow heat exchange, and efficiency is high and have a narrow range of temperature, and two phase flow is uniformly distributed, and energy-saving effect is obvious.
As shown in Figure 2, in the present embodiment, first mix refrigerant separator 146 top is provided with the first mix refrigerant separator gaseous phase outlet 1461, the first mix refrigerant separator liquid phase outlet 1462 is provided with bottom first mix refrigerant separator 146, first mix refrigerant separator gaseous phase outlet 1461 is communicated with the middle and lower part entrance of a mixing tank 149, first mix refrigerant separator liquid phase outlet 1462 is communicated with the middle and upper part entrance of this mixing tank 149, and the outlet at mixing tank 149 top is communicated with refrigeration agent reflux passage 1414.Vapor phase refrigerant is injected in the middle and lower part of mixing tank 149, and liquid phase refrigerant is injected in middle and upper part, make full use of gas upwards try hard to recommend the reflux of dynamic refrigeration agent in refrigeration agent reflux passage 1414, be conducive to raising the efficiency.In the present embodiment, second mix refrigerant separator 147 top is provided with the second mix refrigerant separator gaseous phase outlet 1471, be provided with the second mix refrigerant separator liquid phase outlet 1472, second mix refrigerant separator gaseous phase outlet 1471, second mix refrigerant separator liquid phase outlet 1472 bottom second mix refrigerant separator 147 to be all communicated with refrigeration agent reflux passage 1414; 3rd mix refrigerant separator 148 top is provided with the 3rd mix refrigerant separator gaseous phase outlet 1481, be provided with the 3rd mix refrigerant separator liquid phase outlet the 1482, three mix refrigerant separator gaseous phase outlet the 1481, the 3rd mix refrigerant separator liquid phase outlet 1482 bottom 3rd mix refrigerant separator 148 to be all communicated with refrigeration agent reflux passage 1414.
Further, as shown in Figure 1 and Figure 2, hybrid refrigeration natural gas liquefaction device 1 also comprises refrigeration agent and fills mouth 15, and refrigeration agent fills between mouth 15 and one section of coolant compressor 111 and is connected with the 3rd separator 16, and the outlet of refrigeration agent reflux passage 1414 is communicated with the entrance of the 3rd separator 16.Refrigeration agent fills mouth 15 by refrigeration agent and enters the 3rd separator 16, in the 3rd separator 16, carry out refrigerant air-liquid separation, prevents the work of coolant compressor band liquid from causing potential safety hazard; Refrigeration agent enters in ice chest 14 through one section of coolant compressor 111, first separator, 12, two sections of coolant compressor 112, second separators 13, refrigeration agent is back to the 3rd separator 16 by refrigeration agent reflux passage 1414 complete cooling heat exchange in ice chest 14 after, realizes recycling of refrigeration agent.
Further, as shown in Figure 2, first separator 12 top is provided with the first separator gaseous phase outlet 121, the first separator liquid phase outlet 122 is provided with bottom first separator 12, first separator gaseous phase outlet 121 is communicated with the entrance of described two sections of coolant compressors 112, first separator gaseous phase outlet 121 is also communicated with the entrance of the 3rd separator 16 by one section of compressor anti-surge valve 125, and the first separator liquid phase outlet 122 is communicated with the entrance of middle hydraulic fluid phase refrigerant pass 1413; Second separator 13 top is provided with the second separator gaseous phase outlet 131, the second separator liquid phase outlet 132 is provided with bottom second separator 13, second separator gaseous phase outlet 131 is communicated with the entrance of high pressure gas liquid phase refrigerant pass 1411, second separator gaseous phase outlet 131 is also communicated with the entrance of the first separator 12 by two sections of compressor anti-surge valves 137, and the second separator liquid phase outlet 132 is communicated with the entrance of high-pressure liquid phase refrigerant pass 1412.In order to carry out liquid level and pressure-controlling better, first separator 12 is connected with the first separator liquid level controller 123, between the outlet of middle hydraulic fluid phase refrigerant pass 1413 and the 3rd mix refrigerant separator 148, is connected with the first separator liquid level control valve 124; Described second separator gaseous phase outlet 131 is connected with high pressure gas liquid phase refrigerant flow control 133, is connected with high pressure gas liquid phase refrigerant flow control valve 134 between the outlet of high pressure gas liquid phase refrigerant pass 1411 and the first mix refrigerant separator 146; Second separator liquid phase outlet 132 is connected with high-pressure liquid phase refrigerant flow control 135, is serially connected with high-pressure liquid phase refrigerant flow control valve 136 between the outlet of high-pressure liquid phase refrigerant pass 1412 and the second mix refrigerant separator 147.
Further, as shown in Figure 1 and Figure 2, in order to reduce the temperature of the refrigeration agent entering the first separator 12, second separator 13, be serially connected with between the outlet of the heat source passages 321 of reboiler 32 and the entrance of the first separator 12 between the outlet of the first water cooler 17, two sections of coolant compressors 112 and the entrance of the second separator 13 and be serially connected with the second water cooler 18.In the present embodiment, the first water cooler 17 and the second water cooler 18 are air cooler or water cooler.
Further, as shown in Figure 1, reboiler 32 inside is also provided with lime set and boils passage 322 again, and boil the again entrance of passage 322 of lime set exports 312 with gas reducing liquid and is communicated with, and boil the again outlet of passage 322 of lime set is communicated with the lower sidewall of deethanizing column 31.In the present embodiment, in order to better control the liquid level of deethanizing column 31 and temperature of boiling again, deethanizing column 31 is connected with reboiler temperature controller 323, the ingress of heat source passages 321 is connected with reboiler temperature control valve 324; Deethanizing column 31 is also connected with deethanizing column fluid level controller 313, and the outlet of gas reducing liquid water cooler 34 and gas reducing liquid reclaim between storing device 33 and are serially connected with deethanizing column level control valve 314.Be electrical signal between aforementioned all controllers and corresponding control valve to be connected.
In order to reduce plant area, each structure that natural gas liquefaction and lime set reclaim in integrated apparatus 100 adopts skid structure, and hybrid refrigeration natural gas liquefaction device 1 also adopts skid structure.
When natural gas liquefaction of the present utility model and lime set recovery integrated apparatus 100 work, Sweet natural gas enters from the entrance of the Sweet natural gas cooling channel 142 of hybrid refrigeration natural gas liquefaction device 1, at the cooling effect borehole cooling of refrigerant pass 141 to the temperature of heavy hydrocarbon condensation in Sweet natural gas, natural gas via enters the heavy hydrocarbon separator 21 in heavy hydrocarbon separation system 2 after crossing heavy hydrocarbon condensation liquefaction, in heavy hydrocarbon separator 21, liquid heavy hydrocarbon is separated, the the first gas outlet 211 flash trapping stage natural gas liquefaction passage 143 entered in ice chest 14 being separated the natural gas via top of heavy hydrocarbon continues cooling post liquefaction and enters natural gas liquids storing device 5, the heavy hydrocarbon separated enters in the deethanizing column 31 of gas reducing liquid recovery system 3 through liquid heavy hydrocarbon outlet 212, secondary separation is carried out in the power heat source effect of liquid heavy hydrocarbon by reboiler 32 in deethanizing column 31, the Sweet natural gas containing components such as ethane separated continues cooling post liquefaction by the second-order separation natural gas liquefaction passage 144 that the second gas outlet 311 enters in ice chest 14 and enters natural gas liquids storing device 5, the gas reducing liquid separated is through gas reducing liquid outlet 312, under the control of deethanizing column fluid level controller 313 and deethanizing column level control valve 314, enter gas reducing liquid reclaim storing device 33.The liquefaction amount of the Sweet natural gas in flash trapping stage natural gas liquefaction passage 143, the second-order separation natural gas liquefaction passage 144 is controlled by natural gas liquids networked control systems 4.
Operationally, refrigeration agent (is generally N to hybrid refrigeration natural gas liquefaction device 1 2, C 1, C 2, C 3, iC 5) fill mouth 15 by refrigeration agent and enter the 3rd separator 16, in the 3rd separator 16, carry out refrigerant air-liquid separation, prevent the work of coolant compressor band liquid from causing potential safety hazard, refrigeration agent pressurizes through one section of coolant compressor 111 and heats up, the heat source passages 321 of reboiler 32 is entered from the outlet of one section of coolant compressor 111, for reboiler 32 provides heat energy, refrigeration agent is by the outlet of heat source passages 321, after the first water cooler 17 is cooled to normal temperature, enters the first separator 12 carries out refrigerant air-liquid separation, isolated vapor phase refrigerant enters two sections of coolant compressors 112 and compresses further, the middle hydraulic fluid phase refrigerant pass 1413 that isolated liquid phase refrigerant enters ice chest 14 carries out heat exchange refrigeration, after heat exchange through the 3rd mix refrigerant separator 148 reflux to refrigeration agent reflux passage 1414.Refrigeration agent after two sections of coolant compressors 112 compress enters the second separator 13 and carries out gas-liquid separation after the second water cooler 18 cools, isolated vapor phase refrigerant enters high pressure gas liquid phase refrigerant pass 1411 and carries out heat exchange refrigeration, after heat exchange through the first mix refrigerant separator 146, mixing tank 149 reflux to refrigeration agent reflux passage 1414; Isolated liquid phase refrigerant enters high-pressure liquid phase refrigerant pass 1412 and carries out heat exchange refrigeration, after heat exchange through the second mix refrigerant separator 147 reflux to refrigeration agent reflux passage 1414.Refrigeration agent is back to the 3rd separator 16 through refrigeration agent reflux passage 1414, realizes recycling of refrigeration agent.
From the above mentioned, natural gas liquefaction of the present utility model and lime set recovery integrated apparatus have following beneficial effect:
(1) this natural gas liquefaction and lime set reclaim that integrated apparatus technical process is simple, flexible operation, energy consumption are low, ice chest in the hybrid refrigeration natural gas liquefaction device adopted is made up of plate-fin heat exchanger, structural arrangement is compact, multiple flow heat exchange can be realized, efficiency is high and have a narrow range of temperature, two phase flow is uniformly distributed, and energy-saving effect is obvious;
(2) this natural gas liquefaction and lime set reclaim integrated apparatus and adopt skid modular design, and maximize and realize plug and play integrated solution, equipment is few and degree domestic is high, and equipment investment capital is few; Take up an area little, quantities is few, construction investment is low;
(3) this natural gas liquefaction and lime set reclaim integrated apparatus and fully reclaim mixed hydrocarbon product, are conducive to increasing the performance of enterprises.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.

Claims (10)

1. natural gas liquefaction and lime set reclaim an integrated apparatus, it is characterized in that, comprising:
Hybrid refrigeration natural gas liquefaction device, comprise refrigerant compression unit, described refrigerant compression unit includes one section of coolant compressor and two sections of coolant compressors, the outlet of described one section of coolant compressor is connected with the first separator, the outlet of described two sections of coolant compressors is connected with the second separator, the outlet of described first separator and the outlet of described second separator are all connected to an ice chest, described cold box interior is provided with spaced refrigerant pass and Sweet natural gas cooling channel, flash trapping stage natural gas liquefaction passage, the second-order separation natural gas liquefaction passage,
Heavy hydrocarbon separation system, comprise a heavy hydrocarbon separator be communicated with described Sweet natural gas cooling channel, first gas outlet at described heavy hydrocarbon separator top is communicated with the entrance of described flash trapping stage natural gas liquefaction passage, and the bottom of described heavy hydrocarbon separator is provided with the outlet of liquid heavy hydrocarbon;
Gas reducing liquid recovery system, comprise the deethanizing column of one and described liquid heavy hydrocarbon outlet, second gas outlet at described deethanizing column top is communicated with the entrance of described the second-order separation natural gas liquefaction passage, the bottom of described deethanizing column is provided with gas reducing liquid outlet, described deethanizing column is connected with a reboiler by described gas reducing liquid outlet, and the heat source passages of described reboiler is series between the outlet of described one section of coolant compressor and the entrance of described first separator; Described gas reducing liquid outlet is also connected with gas reducing liquid and reclaims storing device;
Natural gas liquids networked control systems, the entrance of described natural gas liquids networked control systems and described flash trapping stage natural gas liquefaction passage, described the second-order separation natural gas liquefaction channel connection, the outlet of described natural gas liquids networked control systems is communicated with natural gas liquids storing device.
2. natural gas liquefaction as claimed in claim 1 and lime set reclaim integrated apparatus, it is characterized in that: described ice chest comprises the first housing, described first enclosure interior is provided with an interchanger, described interchanger inside is disposed with described Sweet natural gas cooling channel from top to bottom, described flash trapping stage natural gas liquefaction passage and described the second-order separation natural gas liquefaction passage, described interchanger inside is also provided with described refrigerant pass, described refrigerant pass comprises high pressure gas liquid phase refrigerant pass, high-pressure liquid phase refrigerant pass, middle hydraulic fluid phase refrigerant pass and refrigeration agent reflux passage, described high pressure gas liquid phase refrigerant pass, described refrigeration agent reflux passage runs through described interchanger from top to bottom, described first enclosure interior is provided with the first mix refrigerant separator, the second mix refrigerant separator and the 3rd mix refrigerant separator from bottom to up,
The outlet of described high pressure gas liquid phase refrigerant pass is communicated with described first mix refrigerant separator, the outlet of described first mix refrigerant separator and described refrigeration agent reflux channel connection; The outlet of described high-pressure liquid phase refrigerant pass is communicated with described second mix refrigerant separator, the outlet of described second mix refrigerant separator and described refrigeration agent reflux channel connection; The outlet of described middle hydraulic fluid phase refrigerant pass is communicated with described 3rd mix refrigerant separator, the outlet of described 3rd mix refrigerant separator and described refrigeration agent reflux channel connection.
3. natural gas liquefaction as claimed in claim 2 and lime set reclaim integrated apparatus, it is characterized in that: described hybrid refrigeration natural gas liquefaction device also comprises refrigeration agent and fills mouth, described refrigeration agent fills between mouth and described one section of coolant compressor and is connected with the 3rd separator, and the outlet of described refrigeration agent reflux passage is communicated with the entrance of described 3rd separator.
4. natural gas liquefaction as claimed in claim 3 and lime set reclaim integrated apparatus, it is characterized in that: described first separator top is provided with the first separator gaseous phase outlet, described first separator bottom is provided with the first separator liquid phase outlet, described first separator gaseous phase outlet is communicated with the entrance of described two sections of coolant compressors, described first separator gaseous phase outlet is also communicated with the entrance of described 3rd separator by one section of compressor anti-surge valve, and described first separator liquid phase outlet is communicated with the entrance of described middle hydraulic fluid phase refrigerant pass;
Described second separator top is provided with the second separator gaseous phase outlet, described second separator bottom is provided with the second separator liquid phase outlet, described second separator gaseous phase outlet is communicated with the entrance of described high pressure gas liquid phase refrigerant pass, described second separator gaseous phase outlet is also communicated with the entrance of described second separator by two sections of compressor anti-surge valves, and described second separator liquid phase outlet is communicated with the entrance of described high-pressure liquid phase refrigerant pass.
5. natural gas liquefaction as claimed in claim 4 and lime set reclaim integrated apparatus, it is characterized in that: described first separator is connected with the first separator liquid level controller, between the outlet of described middle hydraulic fluid phase refrigerant pass and the 3rd mix refrigerant separator, be connected with the first separator liquid level control valve; Described second separator gaseous phase outlet is connected with high pressure gas liquid phase refrigerant flow control, is connected with high pressure gas liquid phase refrigerant flow control valve between the outlet of described high pressure gas liquid phase refrigerant pass and described first mix refrigerant separator; Described second separator liquid phase outlet is connected with high-pressure liquid phase refrigerant flow control, is serially connected with high-pressure liquid phase refrigerant flow control valve between the outlet of described high-pressure liquid phase refrigerant pass and described second mix refrigerant separator.
6. natural gas liquefaction as claimed in claim 3 and lime set reclaim integrated apparatus, it is characterized in that: between the outlet of described heat source passages and the entrance of described first separator, be serially connected with the first water cooler, between the outlet of described two sections of coolant compressors and the entrance of described second separator, be serially connected with the second water cooler.
7. natural gas liquefaction as claimed in claim 2 and lime set reclaim integrated apparatus, it is characterized in that: described first mix refrigerant separator top is provided with the first mix refrigerant separator gaseous phase outlet, described first mix refrigerant separator bottom is provided with the first mix refrigerant separator liquid phase outlet, described first mix refrigerant separator gaseous phase outlet is communicated with the middle and lower part entrance of a mixing tank, described first mix refrigerant separator liquid phase outlet is communicated with the middle and upper part entrance of described mixing tank, the outlet at described mixing tank top and described refrigeration agent reflux channel connection.
8. natural gas liquefaction as claimed in claim 1 and lime set reclaim integrated apparatus, it is characterized in that: described reboiler inside is also provided with lime set and boils passage again, described lime set is boiled the entrance of passage and described gas reducing liquid outlet again, and boil the again outlet of passage of described lime set is communicated with the lower sidewall of described deethanizing column.
9. natural gas liquefaction as claimed in claim 1 and lime set reclaim integrated apparatus, and it is characterized in that: described deethanizing column is connected with reboiler temperature controller, the ingress of described heat source passages is connected with reboiler temperature control valve; Described deethanizing column is also connected with deethanizing column fluid level controller, the outlet of described gas reducing liquid also and described gas reducing liquid reclaim between storing device and be serially connected with gas reducing liquid water cooler, the outlet of described gas reducing liquid water cooler and described gas reducing liquid reclaim between storing device and are serially connected with deethanizing column level control valve.
10. natural gas liquefaction as claimed in claim 1 and lime set reclaim integrated apparatus, it is characterized in that: described natural gas liquids networked control systems includes the first gas discharge controller that mouth is connected with the outlet of described flash trapping stage natural gas liquefaction passage, the first natural flow control valves is connected with after described first gas discharge controller, described natural gas liquids networked control systems also comprises the second natural gas flow amount controller be connected with the outlet of described the second-order separation natural gas liquefaction passage, GPCV is connected with after described second natural gas flow amount controller, the natural pressure force controller that described GPCV and is connected to described second gas outlet is electrically connected, the outlet of described first natural flow control valves is all communicated with described natural gas liquids storing device with the outlet of described GPCV.
CN201520864727.4U 2015-11-03 2015-11-03 Integrated device is retrieved to natural gas liquefaction and lime set Active CN205062017U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106753635A (en) * 2016-12-06 2017-05-31 河北工业大学 Production method and equipment that G＆C reclaims liquefied gas and ethylene glycol are processed simultaneously
CN111670328A (en) * 2017-12-15 2020-09-15 沙特阿拉伯石油公司 Process integration for natural gas condensate recovery

Cited By (14)

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Publication number Priority date Publication date Assignee Title
CN106753635A (en) * 2016-12-06 2017-05-31 河北工业大学 Production method and equipment that G＆C reclaims liquefied gas and ethylene glycol are processed simultaneously
CN106753635B (en) * 2016-12-06 2019-05-03 河北工业大学 The production method and equipment of natural gas and condensate recycling liquefied gas and ethylene glycol are handled simultaneously
CN111670328A (en) * 2017-12-15 2020-09-15 沙特阿拉伯石油公司 Process integration for natural gas condensate recovery
CN111684226A (en) * 2017-12-15 2020-09-18 沙特阿拉伯石油公司 Process integration for natural gas condensate recovery
US11226154B2 (en) 2017-12-15 2022-01-18 Saudi Arabian Oil Company Process integration for natural gas liquid recovery
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CN111684226B (en) * 2017-12-15 2022-07-01 沙特阿拉伯石油公司 Process integration for natural gas condensate recovery
US11428464B2 (en) 2017-12-15 2022-08-30 Saudi Arabian Oil Company Process integration for natural gas liquid recovery
US11644235B2 (en) 2017-12-15 2023-05-09 Saudi Arabian Oil Company Process integration for natural gas liquid recovery

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