CN210512324U - Skid-mounted natural gas liquefaction device - Google Patents
Skid-mounted natural gas liquefaction device Download PDFInfo
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- CN210512324U CN210512324U CN201921139681.4U CN201921139681U CN210512324U CN 210512324 U CN210512324 U CN 210512324U CN 201921139681 U CN201921139681 U CN 201921139681U CN 210512324 U CN210512324 U CN 210512324U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 239000003345 natural gas Substances 0.000 title claims abstract description 102
- 239000000779 smoke Substances 0.000 claims abstract description 30
- 239000003949 liquefied natural gas Substances 0.000 claims abstract description 17
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 91
- 238000001035 drying Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 15
- 238000005262 decarbonization Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 7
- 238000010248 power generation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 26
- 238000005265 energy consumption Methods 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 15
- 238000007599 discharging Methods 0.000 abstract description 9
- 239000003517 fume Substances 0.000 abstract description 9
- 238000005057 refrigeration Methods 0.000 abstract description 9
- 230000006837 decompression Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model relates to a natural gas liquefaction technical field discloses a skid-mounted formula natural gas liquefaction device and technology, through setting up the waste heat recovery unit, and set up the exhaust port intercommunication of its entry end and generating set's the system of discharging fume, utilize the heat exchange medium to retrieve the heat of discharging fume of generating set's the system of discharging fume with the mode of heat exchange, the natural gas of absorption heat of discharging fume in the high temperature heat exchange medium rethread heat exchange to the natural gas liquefaction technology heats, thereby greatly the energy consumption of reduction skid-mounted formula liquefied natural gas technology, the energy resource consumption that significantly reduces. And the heat exchange medium delivered to different processes has different temperatures to meet different process requirements. In addition, a part of the high-temperature heat exchange medium after heat exchange with the exhaust smoke is conveyed to the precooler unit so as to reduce the refrigeration energy consumption of the refrigerating unit, and further reduce the energy consumption of the whole process.
Description
Technical Field
The utility model relates to a natural gas liquefaction technical field especially relates to a skid-mounted formula natural gas liquefaction device.
Background
In recent years, with the increasing development of remote gas wells, natural gas skid-mounted plants have rapidly developed. The traditional skid-mounted liquefaction process comprises the following steps: the natural gas is converted into an LNG product through heating, pressure reduction, decarburization, dehydration and LNG liquefaction, and the refrigeration adopts MRC refrigeration cycle or nitrogen expansion cycle. Electric heaters are adopted for heat in the processes of heating, pressure reduction, decarburization and dehydration of natural gas, or natural gas is combusted for heat supply, and electric power is adopted for driving refrigeration circulation, so that the energy consumption is high.
On the other hand, the skid-mounted factory is basically located in a remote position, the power is independently generated by the gas generator set, the power generation efficiency of the gas generator is only 30%, wherein 35% of heat is discharged along with high-temperature flue gas, and a lot of waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a skid-mounted formula natural gas liquefaction device and technology for solve energy consumption height, the extravagant technical problem of heat in the current liquefaction technology.
In order to solve the technical problem, an embodiment of the present invention provides a skid-mounted natural gas liquefaction device, including a generator set, a natural gas heating pressure reducing unit, a natural gas decarbonization unit, a natural gas drying unit and a refrigeration unit, wherein the natural gas forms liquefied natural gas after being sequentially processed by the natural gas heating pressure reducing unit, the natural gas decarbonization unit, the natural gas drying unit and the refrigeration unit, the natural gas heating pressure reducing unit includes a first heating unit, the natural gas decarbonization unit includes a reboiling unit, and the natural gas drying unit includes a second heating unit; the skid-mounted natural gas liquefaction device further comprises a precooling unit, and the precooling unit is a third heating unit;
the skid-mounted natural gas liquefaction device further comprises:
the waste heat recovery unit is communicated with a smoke exhaust port of a smoke exhaust system of the generator set, the waste heat recovery unit comprises a heat exchanger and a heat exchange pipeline, the heat exchange pipeline is used for conveying a heat exchange medium, and the heat exchange medium exchanges heat with the smoke exhaust of the smoke exhaust system to recover the heat of the smoke exhaust;
the high-temperature heat exchange medium in the heat exchange pipeline is conveyed to at least one of the first heating unit, the reboiling unit and the second heating unit, is used for heating natural gas, and has different temperatures when conveyed to the first heating unit, the reboiling unit and the second heating unit;
and the high-temperature heat exchange medium in the heat exchange pipeline is also conveyed to a precooling unit, and natural gas is precooled in a heat exchange mode.
Optionally, the high-temperature heat exchange medium in the heat exchange pipeline is conveyed to the first heating unit, the reboiling unit and the second heating unit.
Optionally, the heat exchange pipeline includes a first heat exchange pipeline, a second heat exchange pipeline, and a third heat exchange pipeline;
the first heating unit comprises a first heating pipeline, an outlet of the first heat exchange pipeline is communicated with an inlet of the first heating pipeline, and the first heating pipeline is used for conveying a part of heat exchange medium to the natural gas heating and pressure reducing unit;
the reboiling unit comprises a second heating pipeline, and an outlet of the second heat exchange pipeline is communicated with an inlet of the second heating pipeline and used for conveying a part of heat exchange medium to the natural gas decarbonization unit;
the second heating unit comprises a third heating pipeline, and an outlet of the third heat exchange pipeline is communicated with an inlet of the third heating pipeline and used for conveying a part of heat exchange medium to the natural gas drying unit.
Optionally, the pre-cooling unit includes a pre-cooling pipeline, the heat exchange pipeline includes a fourth heat exchange pipeline, an outlet of the fourth heat exchange pipeline is communicated with an inlet of the pre-cooling pipeline, and is configured to convey a part of the heat exchange medium to the absorption pre-cooling unit.
Optionally, the waste heat recovery unit further comprises a recoverer, and an inlet of the recoverer is communicated with an outlet of the first heating pipeline, an outlet of the second heating pipeline, an outlet of the third heating pipeline and an outlet of the pre-cooling pipeline, and is used for recovering the heat exchange medium.
Optionally, temperature sensors are arranged at the outlet of the first heat exchange pipeline, the outlet of the second heat exchange pipeline, the outlet of the third heat exchange pipeline and the outlet of the fourth heat exchange pipeline, and are used for measuring the temperature of the heat exchange medium;
and standby heaters are further arranged at the outlet of the first heat exchange pipeline, the outlet of the second heat exchange pipeline, the outlet of the third heat exchange pipeline and the outlet of the fourth heat exchange pipeline and are used for heating the heat exchange medium when the temperature of the high-temperature heat exchange medium subjected to heat exchange with the exhaust smoke is unstable.
Optionally, the generator set is a natural gas generator set;
the skid-mounted natural gas liquefaction device further comprises:
liquefied natural gas storage tank, including the gas outlet, the gas outlet communicates with generator set's entry end, and generator set is carried to liquefied natural gas storage tank's volatile gas carries and recycle.
The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:
among the above-mentioned technical scheme, retrieve the heat of discharging fume of generating set's the system of discharging fume through heat exchange medium with the mode of heat exchange, the natural gas in the natural gas liquefaction technology is heated through the mode of heat exchange to the high temperature heat exchange medium that absorbs the heat of discharging fume to greatly the energy consumption of the skid-mounted formula liquefied natural gas technology that must reduce greatly, the energy resource consumption that significantly reduces. And the heat exchange medium delivered to different processes has different temperatures to meet different process requirements. In addition, a part of the high-temperature heat exchange medium after heat exchange with the exhaust smoke is conveyed to the precooler unit so as to reduce the refrigeration energy consumption of the refrigerating unit, and further reduce the energy consumption of the whole process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a block diagram of a skid-mounted natural gas liquefaction plant according to an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1, the embodiment of the utility model provides a skid-mounted formula natural gas liquefaction device, including generating set, natural gas heating decompression unit, natural gas decarbonization unit, natural gas drying unit and refrigerating unit, the natural gas forms liquefied natural gas after the processing of natural gas heating decompression unit, natural gas decarbonization unit, natural gas drying unit and refrigerating unit in proper order, and liquefied natural gas carries to liquefied natural gas storage tank through the cold box and stores. The natural gas heating and pressure reducing unit comprises a first heating unit, the natural gas decarbonizing unit comprises a reboiling unit, the natural gas drying unit comprises a second heating unit, the skid-mounted natural gas liquefying device further comprises a precooling unit, and the precooling unit is a third heating unit.
The skid-mounted natural gas liquefaction device further comprises:
the waste heat recovery unit is communicated with a smoke exhaust port of a smoke exhaust system of the generator set, the waste heat recovery unit comprises a heat exchanger and a heat exchange pipeline, the heat exchange pipeline is used for conveying a heat exchange medium, and the heat exchange medium exchanges heat with the smoke exhaust of the smoke exhaust system to recover the heat of the smoke exhaust;
the high-temperature heat exchange medium in the heat exchange pipeline is conveyed to at least one of the first heating unit, the reboiling unit and the second heating unit, is used for heating the natural gas, and is conveyed to the first heating unit, the reboiling unit and the second heating unit at different temperatures, and is conveyed to the precooling unit, and is precooled by the heat exchange mode.
The utility model discloses a skid-mounted formula natural gas liquefaction device retrieves the heat of discharging fume of generating set's smoke exhaust system for heat the natural gas in the natural gas liquefaction technology, thereby greatly reduced skid-mounted formula liquefied natural gas technology's energy consumption, the energy resource consumption that significantly reduces. And the heat exchange medium delivered to different processes has different temperatures to meet different process requirements. In addition, a part of the high-temperature heat exchange medium after heat exchange with the exhaust smoke is conveyed to the precooler unit so as to reduce the refrigeration energy consumption of the refrigerating unit, and further reduce the energy consumption of the whole process.
In order to obtain high-temperature heat exchange media with different temperatures, the high-temperature heat exchange media can be obtained by controlling the flow rate, the heat exchange time and the like of the heat exchange media, and the details are not described herein.
The high temperature in the present invention is not particularly limited to the temperature range, as far as the temperature of the heat exchange medium is higher than the temperature of the exhaust gas before the heat exchange with the heat exchange medium.
The heat exchange medium may be heat transfer oil.
Preferably, the high-temperature heat exchange medium in the heat exchange pipeline is conveyed to the first heating unit, the reboiling unit and the second heating unit. Namely, a part of the high-temperature heat exchange medium after heat exchange with the exhaust gas is conveyed to a first heating unit of a natural gas heating pressure reducing unit, a part of the high-temperature heat exchange medium is conveyed to a reboiling unit of a natural gas decarbonizing unit, a part of the high-temperature heat exchange medium is conveyed to a second heating unit of a natural gas drying unit, a part of the high-temperature heat exchange medium is conveyed to a precooling unit, and the high-temperature heat exchange medium is used for heating the natural gas in a heat exchange manner again, so that the heat of the exhaust gas of the power generating unit.
In a specific embodiment, the heat exchange lines include a first heat exchange line 10, a second heat exchange line 11, and a third heat exchange line 12.
The first heating unit comprises a first heating pipeline (not shown in the figure), and an outlet of the first heat exchange pipeline 10 is communicated with an inlet of the first heating pipeline and is used for conveying a part of heat exchange medium to the natural gas heating pressure reducing unit. The reboiling unit comprises a second heating pipeline, and an outlet of the second heat exchange pipeline 11 is communicated with an inlet of the second heating pipeline and used for conveying a part of heat exchange medium to the natural gas decarbonization unit. The second heating unit comprises a third heating pipeline, and an outlet of the third heat exchange pipeline 12 is communicated with an inlet of the third heating pipeline and used for conveying a part of heat exchange medium to the natural gas drying unit.
In the above embodiment, the heat exchange media delivered to different processes exchange heat with the exhaust smoke through different heat exchange pipelines, so as to conveniently control the temperature of the high-temperature heat exchange media delivered to different processes, and meet the temperature requirements of different processes.
Based on the same principle, the precooling unit comprises a precooling pipeline, the heat exchange pipeline comprises a fourth heat exchange pipeline 13, an outlet of the fourth heat exchange pipeline 13 is communicated with an inlet of the precooling pipeline and is used for conveying a part of heat exchange medium to the precooling unit, so that the high-temperature heat exchange medium conveyed to the precooling unit is subjected to heat exchange with smoke exhaust through an independent heat exchange pipeline, and the temperature requirement of a precooling process is met.
In order to better control the temperature of the high-temperature heat exchange medium delivered to each process, in this embodiment, temperature sensors 1 are disposed at the outlet of the first heat exchange pipeline 10, the outlet of the second heat exchange pipeline 11, the outlet of the third heat exchange pipeline 12, and the outlet of the fourth heat exchange pipeline 13, and are used for measuring the temperature of the high-temperature heat exchange medium after heat exchange with the flue gas, so as to monitor the temperature of the high-temperature heat exchange medium delivered to each process.
Further, backup heaters 2 are further disposed at the outlet of the first heat exchange pipeline 10, the outlet of the second heat exchange pipeline 11, the outlet of the third heat exchange pipeline 12, and the outlet of the fourth heat exchange pipeline 13, and are used for heating the heat exchange medium when the temperature of the high-temperature heat exchange medium after heat exchange with the exhaust smoke is unstable, so as to improve the stability and efficiency of the whole process.
The unstable temperature of the high-temperature heat exchange medium includes that the temperature of the high-temperature heat exchange medium is lower, and the temperature of the high-temperature heat exchange medium is higher for a moment and lower for a moment.
The first heat exchange pipeline, the second heat exchange pipeline, the third heat exchange pipeline and the fourth heat exchange pipeline can share one standby heater, and different standby heaters can be used. In this embodiment, the first heat exchange pipeline, the second heat exchange pipeline, the third heat exchange pipeline and the fourth heat exchange pipeline use different backup heaters to heat the heat exchange medium according to the temperature requirements of different natural gas liquefaction processes, and the operation is more flexible.
It should be noted that, because the temperature sensors and the backup heaters corresponding to the first heat exchange pipeline, the second heat exchange pipeline, the third heat exchange pipeline and the fourth heat exchange pipeline have the same functions, they are labeled with the same reference numerals.
In this embodiment, the waste heat recovery unit further includes a recoverer, and an inlet of the recoverer is communicated with the outlet of the first heating pipeline, the outlet of the second heating pipeline, the outlet of the third heating pipeline, and the outlet of the pre-cooling pipeline, so as to recover the heat exchange medium, and perform heat exchange with the discharged smoke again for recycling.
The waste heat recovery unit is a heat exchange device, the main structure is also a heat exchange pipeline, and the specific structure of the waste heat recovery unit is not described in detail herein.
And the controller is connected with the temperature sensor and the standby heater and is used for controlling the standby heater to heat the heat exchange medium when the temperature of the high-temperature heat exchange medium subjected to heat exchange with the exhaust smoke is unstable, so that automatic control is realized, and the stability and the efficiency of the whole process are improved.
The controller can be a single chip microcomputer, a PLC and other controllers, and the connection relation between the controller and peripheral devices is determined by pins of the controller, so that the detailed description is omitted.
Further, a preset temperature of the heat exchange medium may be set for each process to achieve automatic control of the temperature range of the high temperature heat exchange medium delivered to each process. Specifically, the controller is further configured to compare the temperature obtained by the temperature sensor with a preset temperature range, and control the backup heater to heat the heat exchange medium when the obtained temperature of the heat exchange medium is lower than the preset temperature range.
In order to reduce environmental pollution, the generator set is a natural gas generator set.
Further, set up skid-mounted formula natural gas liquefaction device's liquefied natural gas storage tank, including the gas outlet, the gas outlet communicates with generator set's entry end, and liquefied natural gas storage tank's volatile gas is carried to generator set and is carried out recycle, with BOG gaseous make full use of to reduce cost. The specific transfer is realized by a pipeline, and the detailed description is omitted.
The embodiment of the utility model provides an in still provide a skid-mounted formula natural gas liquefaction technology, include:
the exhaust smoke of the exhaust smoke system of the generator set is conveyed to the waste heat recovery unit and exchanges heat with a heat exchange medium to recover the heat of the exhaust smoke;
the high-temperature heat exchange medium subjected to heat exchange is conveyed to at least one of a first heating unit of a natural gas heating pressure reducing unit, a reboiling unit of a natural gas decarbonizing unit and a second heating unit of a natural gas drying unit, is used for heating natural gas, and the temperatures of the high-temperature heat exchange medium conveyed to the first heating unit, the reboiling unit and the second heating unit are different;
and the high-temperature heat exchange medium subjected to heat exchange is also conveyed to an absorption type precooling unit for precooling the natural gas through heat exchange.
The utility model discloses a skid-mounted formula natural gas liquefaction technology retrieves the heat of discharging fume of generating set's exhaust system for heat the natural gas in the natural gas liquefaction technology, thereby greatly reduced skid-mounted formula liquefied natural gas technology's energy consumption, the energy resource consumption that significantly reduces. And the heat exchange medium delivered to different processes has different temperatures to meet different process requirements. In addition, the natural gas is precooled by using the high-temperature heat exchange medium, so that the refrigeration energy consumption of the refrigerating unit is reduced, and the energy consumption of the whole process is further reduced.
In a natural gas liquefaction process of 3 ten thousand square/day, the capacity of a generator is about 680KW, and the waste heat quantity of the exhausted smoke can be 600 KW. The required heat of natural gas heating decompression unit is 50KW, and the required heat of natural gas decarbonization unit is 100KW, and the required heat of natural gas drying unit is 30KW, and the required heat of refrigerating unit is 200KW, totally 380 KW.
Adopt the technical scheme of the utility model 280KW can economize on electricity (the natural gas heating decompression unit saves electric energy 50KW, and the natural gas decarbonization unit saves electric energy 100KW, and the natural gas drying unit saves electric energy 30KW, and the refrigerating unit saves electric energy 100KW), and the total power of device reduces to 450KW, can use the waste heat to be 400KW, and the heat that liquefaction technology consumed is 380KW, can satisfy the heat supply demand.
Adopt the technical scheme of the utility model can reduce the energy consumption of natural gas liquefaction technology by 0.184KW Nm3, and energy-conserving effect is obvious.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. A skid-mounted natural gas liquefaction device comprises a generator set, a natural gas heating and pressure reducing unit, a natural gas decarbonization unit, a natural gas drying unit and a refrigerating unit, wherein natural gas is sequentially processed by the natural gas heating and pressure reducing unit, the natural gas decarbonization unit, the natural gas drying unit and the refrigerating unit to form liquefied natural gas; the skid-mounted natural gas liquefaction device further comprises a precooling unit, and the precooling unit is a third heating unit;
the skid-mounted natural gas liquefaction device further comprises:
the waste heat recovery unit is communicated with a smoke exhaust port of a smoke exhaust system of the generator set, the waste heat recovery unit comprises a heat exchanger and a heat exchange pipeline, the heat exchange pipeline is used for conveying a heat exchange medium, and the heat exchange medium exchanges heat with the smoke exhaust of the smoke exhaust system to recover the heat of the smoke exhaust;
the high-temperature heat exchange medium in the heat exchange pipeline is conveyed to at least one of the first heating unit, the reboiling unit and the second heating unit, is used for heating natural gas, and has different temperatures when conveyed to the first heating unit, the reboiling unit and the second heating unit;
and the high-temperature heat exchange medium in the heat exchange pipeline is also conveyed to a precooling unit, and natural gas is precooled in a heat exchange mode.
2. The skid-mounted natural gas liquefaction plant of claim 1, wherein the high temperature heat exchange medium in the heat exchange line is delivered to a first heating unit, a reboiling unit, and a second heating unit.
3. The skid-mounted natural gas liquefaction plant of claim 2, wherein said heat exchange lines comprise a first heat exchange line, a second heat exchange line, a third heat exchange line;
the first heating unit comprises a first heating pipeline, an outlet of the first heat exchange pipeline is communicated with an inlet of the first heating pipeline, and the first heating pipeline is used for conveying a part of heat exchange medium to the natural gas heating and pressure reducing unit;
the reboiling unit comprises a second heating pipeline, and an outlet of the second heat exchange pipeline is communicated with an inlet of the second heating pipeline and used for conveying a part of heat exchange medium to the natural gas decarbonization unit;
the second heating unit comprises a third heating pipeline, and an outlet of the third heat exchange pipeline is communicated with an inlet of the third heating pipeline and used for conveying a part of heat exchange medium to the natural gas drying unit.
4. The skid-mounted natural gas liquefaction plant of claim 3, wherein the precooler assembly comprises a precooling line, the heat exchange line comprises a fourth heat exchange line, and an outlet of the fourth heat exchange line is in communication with an inlet of the precooling line for conveying a portion of the heat exchange medium to the absorption precooling unit.
5. The skid-mounted natural gas liquefaction device of claim 4, wherein the waste heat recovery unit further comprises a recoverer, an inlet of the recoverer is communicated with an outlet of the first heating pipeline, an outlet of the second heating pipeline, an outlet of the third heating pipeline and an outlet of the pre-cooling pipeline, and is used for recovering a heat exchange medium.
6. The skid-mounted natural gas liquefaction plant of claim 4, wherein temperature sensors are provided at the outlet of the first heat exchange line, at the outlet of the second heat exchange line, at the outlet of the third heat exchange line and at the outlet of the fourth heat exchange line for measuring the temperature of the heat exchange medium;
and standby heaters are further arranged at the outlet of the first heat exchange pipeline, the outlet of the second heat exchange pipeline, the outlet of the third heat exchange pipeline and the outlet of the fourth heat exchange pipeline and are used for heating the heat exchange medium when the temperature of the high-temperature heat exchange medium subjected to heat exchange with the exhaust smoke is unstable.
7. The skid-mounted natural gas liquefaction plant of claim 6, wherein said power generation unit is a natural gas power generation unit;
the skid-mounted natural gas liquefaction device further comprises:
liquefied natural gas storage tank, including the gas outlet, the gas outlet communicates with generator set's entry end, and liquefied natural gas storage tank's volatile gas is carried to generator set and is carried out recycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139681.4U CN210512324U (en) | 2019-07-19 | 2019-07-19 | Skid-mounted natural gas liquefaction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139681.4U CN210512324U (en) | 2019-07-19 | 2019-07-19 | Skid-mounted natural gas liquefaction device |
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| Publication Number | Publication Date |
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| CN210512324U true CN210512324U (en) | 2020-05-12 |
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| CN201921139681.4U Active CN210512324U (en) | 2019-07-19 | 2019-07-19 | Skid-mounted natural gas liquefaction device |
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Address after: 276000 2 km north of Kunming Road and Chang'an Road, economic development zone, Linyi City, Shandong Province Patentee after: Shandong Juchuang Energy Group Co.,Ltd. Country or region after: China Address before: 276025 km north of Kunming Road and Chang'an Road, Lanshan District, Linyi City, Shandong Province Patentee before: Shandong juchuang Gas Equipment Co.,Ltd. Country or region before: China |