CN205897701U - Liquefied natural gas precooling cold box heavy hydrocarbon desorption system - Google Patents
Liquefied natural gas precooling cold box heavy hydrocarbon desorption system Download PDFInfo
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- CN205897701U CN205897701U CN201620872105.0U CN201620872105U CN205897701U CN 205897701 U CN205897701 U CN 205897701U CN 201620872105 U CN201620872105 U CN 201620872105U CN 205897701 U CN205897701 U CN 205897701U
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Abstract
The utility model discloses a liquefied natural gas precooling cold box heavy hydrocarbon desorption system, including precooling heat exchanger, main cooler and heavy hydrocarbon scrubbing tower, still including vice cooler, heavy hydrocarbon separator, heavy hydrocarbon buffer tank, backwash pump, deethanizer, muddy hydrocarbon holding vessel, LNG holding vessel, first ooff valve, second switch valve, third ooff valve, fourth ooff valve, first separator, second separator, third separator, compressor, condenser, air cooler and a fluid conveying pipe to the 29 fluid conveying pipe. The utility model discloses cryogenic separation method that the utilization combined together and heavy hydrocarbon washing method be the cryogenic liquefying natural gas step by step, and effective its institute of desorption contains most desorption heavy hydrocarbon, matches heavy hydrocarbon desorption rate in the natural gas component in the required technological parameter requirement of liquefaction, avoid freezing stifled, reduction parking (shut down) the time.
Description
Technical field
This utility model is related to petrochemical industry processing equipment, belongs to the improvement of heavy hydrocarbon removing means structure, particularly liquefies
Natural gas pre-cooling ice chest heavy hydrocarbon removes system.
Background technology
Unstripped gas needs to remove the sour impurity such as gas and water and heavy hydrocarbon in component before cryogenic liquefying, reaches precision needed for liquefaction.Weight
Though hydrocarbon accounting in component of natural gas is little, if heat exchange can not can be blocked in liquefaction low-temperature zone by thorough removing in natural gas purification section
Device runner and make Cold box blocking and freezing, reduce liquefied fraction, increase energy consumption and frozen block and can lead to when serious stop.
Natural gas liquefaction plant removing heavy hydrocarbon technique typically adopts separation by deep refrigeration, absorption method may also be employed and washing method takes off
Remove.Separation by deep refrigeration using each component melt boiling point difference carry out gas-liquid separation, gas is compressed successively, cools down, rectification then
Reach detached technical purpose.Washing rule is increase scrubbing tower, the low temperature lime set that liquefaction stages are extracted out after heavy hydrocarbon separator
Inject its tower top inversely to contact to wash out the benzene in natural gas and heavy hydrocarbon.Additionally, middle-size and small-size liquefaction plant adopts hybrid refrigeration
Technique, nearly all exists in first filler test run and causes the technical problem of Cold box blocking and freezing because of heat exchange area deficiency, especially in gas
When matter concentration of component fluctuation range is larger, even if above-mentioned several method is used in combination nor effectively removes heavy hydrocarbon nor full
Concentration of component needed for foot trip liquefaction process requires.
Utility model content
The purpose of this utility model is to provide a kind of liquefied natural gas pre-cooling ice chest heavy hydrocarbon removing system, using combining
Separation by deep refrigeration and heavy hydrocarbon washing method LNG cryogenic step by step, effectively removing overwhelming majority removing heavy hydrocarbons contained by it, will
In gas component, heavy hydrocarbon removal efficiency is matched with technological parameter requirement needed for liquefaction, it is to avoid frozen block, reduces (shutdown) time of parking.
The purpose of this utility model is achieved in that a kind of liquefied natural gas pre-cooling ice chest heavy hydrocarbon removing system, including
Precool heat exchanger device, primary cooler and heavy hydrocarbon scrubbing tower；Also include supplementary cooler, heavy hydrocarbon separator, heavy hydrocarbon surge tank, reflux pump,
Dethanizer, mixed hydrocarbon holding vessel, lng holding vessel, first switch valve, second switch valve, the 3rd switch valve, the 4th switch valve, the
One separator, the second separator, the 3rd separator, compressor, condenser, air cooler and the first pipe conveying fluid are to the 29th defeated stream
Pipe；Precool heat exchanger device is provided with cooling duct first cooling duct of three articles of mutual heat exchange, the second cooling duct and the 3rd cooling
Passage, the 3rd cooling duct is subject to flow through the cooling working medium cooling of the 3rd cooling duct with refrigeration first cooling duct, the second cooling
Passage, supplementary cooler is provided with three articles can be by cooling duct the 4th cooling duct of refrigeration, the 5th cooling duct and the 6th cooling
Passage, primary cooler is provided with four articles can be logical by cooling duct the 7th cooling duct of refrigeration, the 8th cooling duct, the 9th cooling
Road and the tenth cooling duct, condenser is provided with two flow inlet first flow inlet and the second flow inlet；When liquefied natural gas is pre-
During cold case heavy hydrocarbon removing system work, the first pipe conveying fluid passes through the first cooling duct and connects the heavy hydrocarbon scrubbing tower erect near it
The oil phase flow inlet that the position of lower end is provided with, the gas phase outflow tube that heavy hydrocarbon scrubbing tower upper end is provided with pass sequentially through the second pipe conveying fluid,
4th cooling duct, the 3rd pipe conveying fluid, the 7th cooling duct, be serially connected with first switch valve the 4th pipe conveying fluid connect erect weight
The flow inlet that the position that hydrocarbon separator is located between its top and bottom is provided with, the liquid phase that heavy hydrocarbon separator lower end is provided with goes out head piece
The flow inlet being provided with by the position that the heavy hydrocarbon surge tank that the 5th pipe conveying fluid connects accumbency is located between its front end and rear end, heavy hydrocarbon
What surge tank front end was provided with goes out the flow inlet that head piece passes sequentially through the 6th pipe conveying fluid connection reflux pump, and the head piece that goes out of reflux pump passes through
7th pipe conveying fluid connects the cleaning mixture flow inlet that heavy hydrocarbon scrubbing tower is provided near the position of its upper end, and heavy hydrocarbon separator upper end is provided with
Gas phase go out head piece pass sequentially through the 8th pipe conveying fluid, the 8th cooling duct, be serially connected with second switch valve the 9th pipe conveying fluid connect
The flow inlet that the position that the lng holding vessel erect is located between its top and bottom is provided with, what lng holding vessel upper end was provided with goes out stream
Mouth connects, by the tenth pipe conveying fluid, the first flow inlet that condenser is provided with, and the liquid phase that heavy hydrocarbon scrubbing tower lower end is provided with goes out head piece and passes through
11st pipe conveying fluid connects the flow inlet that the dethanizer erect is provided near the position of its upper end, and dethanizer upper end is provided with
Gas phase goes out head piece and connects the 12nd pipe conveying fluid, and it is perpendicular by the 13rd pipe conveying fluid connection that the liquid phase that dethanizer lower end is provided with goes out head piece
The flow inlet that the position that vertical mixed hydrocarbon holding vessel is located between its top and bottom is provided with, the gas phase that mixed hydrocarbon holding vessel upper end is provided with
Go out head piece and connect the 14th pipe conveying fluid, it is defeated that the liquid phase that mixed hydrocarbon holding vessel is provided near the position of its lower end goes out head piece connection the 15th
Flow tube, condenser go out head piece pass sequentially through the 29th pipe conveying fluid, the second cooling duct, the 16th pipe conveying fluid connect erect
The flow inlet that the position that first separator is located between its top and bottom is provided with, the first separator upper end is respectively equipped with low side
Go out head piece jointly pass sequentially through the 17th pipe conveying fluid, the 5th cooling duct, the 18th pipe conveying fluid connect erect second separate
Device is located at the flow inlet that is provided with of position between its top and bottom, and the second separator upper end goes out head piece with low side is respectively equipped with
Common connection the 19th pipe conveying fluid, the 19th pipe conveying fluid passes sequentially through the 20th pipe conveying fluid, the 9th cooling duct, is serially connected with the 3rd
22nd pipe conveying fluid of switch valve, the tenth cooling duct connect the 23rd pipe conveying fluid and by being serially connected with the 4th switch valve
21st pipe conveying fluid connects the 23rd pipe conveying fluid, and the 23rd pipe conveying fluid passes sequentially through the 6th cooling duct and connects the 20th
Four pipe conveying fluids, the 24th pipe conveying fluid and the 28th pipe conveying fluid jointly connect setting the 3rd separator be located at its upper end with
The flow inlet that position between end is provided with, the gas phase that the 3rd separator upper end is provided with goes out head piece and passes through the 25th pipe conveying fluid connection
The flow inlet of compressor, the head piece that goes out of compressor passes through the flow inlet that the 26th pipe conveying fluid connects air cooler, the going out of air cooler
Head piece connects, by the 27th pipe conveying fluid, the second flow inlet that condenser is provided with.
Main body operation logic of the present utility model is: the of the pre-cooled heat exchanger of unstripped gas of impurity such as sour gas and water of removing
One cooling duct is cooled to the reboiler flowing into heavy hydrocarbon scrubbing tower bottom after -24 DEG C, from heavy hydrocarbon scrubbing tower effluent air through pair
4th cooling duct of cooler is cooled to the 7th cooling duct through primary cooler after -50 DEG C and is cooled to -73 DEG C, from the 7th
The gas of cooling duct flows into heavy hydrocarbon separator, and the liquid flowing out from heavy hydrocarbon separator flows into heavy hydrocarbon surge tank and is subsequently refluxed pump
Suction and flow into heavy hydrocarbon scrubbing tower serve as cleaning mixture and with after heat exchange flow into heavy hydrocarbon scrubbing tower bottom reboiler gas with
The mode of reverse relative to each other contact is realized heavy hydrocarbon and is separated；From the 8th cooling through primary cooler for the heavy hydrocarbon separator effluent air
Form lng(liquefied natural gas after passage cooling) flow into the storage of lng holding vessel as commercially available product, flow out from heavy hydrocarbon scrubbing tower
Liquid flow into dethanizer and be separated into gas and liquid, finally flow into heat-conducting oil furnace from dethanizer effluent air and fill
Work as fuel gas, the liquid flowing out from dethanizer flows into mixed hydrocarbon holding vessel periodically to be transported outward, and the foreign gas such as air is from mixed hydrocarbon
The gas phase that holding vessel upper end is provided with goes out head piece and discharges, the oil phase after the second cooling duct heat exchange of the pre-cooled heat exchanger of condenser
Flowing material flows into the first separator, the 5th cooling duct through supplementary cooler for the oil phase flowing material flowed out from the first separator
Flow into the second separator after cooling, from second separator flow out a part of oil phase flowing material successively through primary cooler the 9th
With another part oil phase stream flowing through the 21st pipe conveying fluid from the second separator behind cooling duct and the tenth cooling duct heat exchange
Body material flows into the 3rd separator jointly with the state collaborated after the 6th cooling duct heat exchange of supplementary cooler, azeotrope with
The oil phase flowing material flowing out after the 6th cooling duct heat exchange of supplementary cooler also flows into the 3rd separator with the state at interflow
(by the proportioning of azeotrope is adjusted flexibly, there is very strong adaptability to fluctuation in source of the gas component certain limit, meet and subsequently give birth to
Produce require), from the 3rd separator flow out oil phase flowing material successively through compressor, air cooler and the pre-cooled heat exchanger of condenser
Second cooling duct flow into the first separator.As can be seen here, this utility model can thoroughly solve the (inclusion of heavy hydrocarbon in source of the gas component
Neopentane, benzene and c7+ high-carbon hydrocarbon) content increase causes the not enough problem of heat exchange area, preferably contains in removing component of natural gas
Measure higher heavy hydrocarbon, meet the requirement that downstream liquefaction device limits to impurity content in component of natural gas, by adjusting azeotrope
Proportioning, can have good adaptability to source of the gas component fluctuation.This utility model is washed using the separation by deep refrigeration combining and heavy hydrocarbon
Wash method LNG cryogenic step by step, effectively remove overwhelming majority removing heavy hydrocarbons contained by it, heavy hydrocarbon in gas component is removed
Rate is matched with technological parameter requirement needed for liquefaction, it is to avoid frozen block, reduces (shutdown) time of parking.
Brief description
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the overall structure connection diagram of this utility model.
Specific embodiment
A kind of liquefied natural gas pre-cooling ice chest heavy hydrocarbon removes system, as shown in figure 1, including precool heat exchanger device e1, main cooling
Device e3 and heavy hydrocarbon scrubbing tower t1；Also include supplementary cooler e2, heavy hydrocarbon separator v1, heavy hydrocarbon surge tank v2, reflux pump p, deethanization
Tower t2, mixed hydrocarbon holding vessel st1, lng holding vessel v3, first switch valve 1, second switch valve 2, the 3rd switch valve 3, the 4th switch valve
4, the first separator f1, the second separator f2, the 3rd separator f3, compressor c1, condenser e4, air cooler e5 and the first defeated stream
Pipe is constituted to the 29th pipe conveying fluid, primary cooler e3 and supplementary cooler e2 by ice chest；Precool heat exchanger device e1 is provided with three mutually
Cooling duct first cooling duct of phase heat exchange, the second cooling duct and the 3rd cooling duct, the 3rd cooling duct is flowed through
The cooling working medium of the 3rd cooling duct is lowered the temperature with refrigeration first cooling duct, the second cooling duct, and supplementary cooler e2 is provided with three
Four can be provided with by cooling duct the 4th cooling duct of refrigeration, the 5th cooling duct and the 6th cooling duct, primary cooler e3
Article can be cold by cooling duct the 7th cooling duct of refrigeration, the 8th cooling duct, the 9th cooling duct and the tenth cooling duct
Condenser e4 is provided with two flow inlet first flow inlet and the second flow inlet；When liquefied natural gas pre-cooling ice chest heavy hydrocarbon removes system
During work, the first pipe conveying fluid connects what the heavy hydrocarbon scrubbing tower t1 erectting was provided near the position of its lower end by the first cooling duct
Oil phase flow inlet, the gas phase outflow tube that heavy hydrocarbon scrubbing tower t1 upper end is provided with pass sequentially through the second pipe conveying fluid, the 4th cooling duct,
Three pipe conveying fluids, the 7th cooling duct, be serially connected with first switch valve 1 the 4th pipe conveying fluid connect erect heavy hydrocarbon separator v1 be located at
The flow inlet that position between its top and bottom is provided with, it is defeated by the 5th that the liquid phase that heavy hydrocarbon separator v1 lower end is provided with goes out head piece
Flow tube connects the flow inlet that the heavy hydrocarbon surge tank v2 of accumbency is provided with, heavy hydrocarbon surge tank v2 positioned at the position between its front end and rear end
What front end was provided with goes out the flow inlet that head piece passes sequentially through the 6th pipe conveying fluid connection reflux pump p, and the head piece that goes out of reflux pump p passes through the 7th
Pipe conveying fluid connects the cleaning mixture flow inlet that heavy hydrocarbon scrubbing tower t1 is provided near the position of its upper end, and heavy hydrocarbon separator v1 upper end is provided with
Gas phase go out head piece pass sequentially through the 8th pipe conveying fluid, the 8th cooling duct, be serially connected with second switch valve 2 the 9th pipe conveying fluid connect
The flow inlet that the position that the lng holding vessel v3 erectting is located between its top and bottom is provided with, lng holding vessel v3 upper end is provided with
Go out head piece and the first flow inlet that condenser e4 is provided with is connected by the tenth pipe conveying fluid, the liquid phase that heavy hydrocarbon scrubbing tower t1 lower end is provided with goes out
Head piece connects the flow inlet that the dethanizer t2 erectting is provided with, dethanizer near the position of its upper end by the 11st pipe conveying fluid
The gas phase that t2 upper end is provided with goes out head piece and connects the 12nd pipe conveying fluid, and the liquid phase that dethanizer t2 lower end is provided with goes out head piece and passes through the tenth
Three pipe conveying fluids connect the flow inlet that the mixed hydrocarbon holding vessel st1 erectting is provided with, mixed hydrocarbon storage positioned at the position between its top and bottom
Deposit the gas phase that tank st1 upper end is provided with and go out head piece and connect the 14th pipe conveying fluid, mixed hydrocarbon holding vessel st1 is provided near the position of its lower end
Liquid phase go out head piece connect the 15th pipe conveying fluid, condenser e4 go out head piece pass sequentially through the 29th pipe conveying fluid, second cooling
Passage, the 16th pipe conveying fluid connect the influent stream that the first separator f1 erectting is provided with positioned at the position between its top and bottom
Mouthful, what the first separator f1 upper end and low side were respectively equipped with go out, and head piece passes sequentially through the 17th pipe conveying fluid jointly, the 5th cooling is led to
Road, the 18th pipe conveying fluid connect the flow inlet that the second separator f2 erectting is provided with positioned at the position between its top and bottom,
Second separator f2 upper end is connected the 19th pipe conveying fluid jointly with the head piece that goes out that low side is respectively equipped with, and the 19th pipe conveying fluid leads to successively
Cross the 20th pipe conveying fluid, the 9th cooling duct, the 22nd pipe conveying fluid being serially connected with the 3rd switch valve 3, the tenth cooling duct even
Connect the 23rd pipe conveying fluid and connect the 23rd pipe conveying fluid by being serially connected with the 21st pipe conveying fluid of the 4th switch valve 4, the
23 pipe conveying fluids pass sequentially through the 6th cooling duct and connect the 24th pipe conveying fluid, the 24th pipe conveying fluid and the 28th defeated
Flow tube connects the flow inlet that the 3rd separator f3 of setting is provided with positioned at the position between its top and bottom jointly, and the 3rd separates
The gas phase that device f3 upper end is provided with goes out head piece and passes through the flow inlet that the 25th pipe conveying fluid connects compressor c1, and compressor c1 goes out stream
Mouth connects the flow inlet of air cooler e5 by the 26th pipe conveying fluid, and the head piece that goes out of air cooler e5 passes through the 27th pipe conveying fluid even
Connect the second flow inlet that condenser e4 is provided with.
Claims (1)
1. a kind of liquefied natural gas pre-cooling ice chest heavy hydrocarbon removes system, including precool heat exchanger device (e1), primary cooler (e3) and weight
Hydrocarbon scrubbing tower (t1)；It is characterized in that: also include supplementary cooler (e2), heavy hydrocarbon separator (v1), heavy hydrocarbon surge tank (v2), backflow
Pump (p), dethanizer (t2), mixed hydrocarbon holding vessel (st1), lng holding vessel (v3), first switch valve (1), second switch valve (2),
3rd switch valve (3), the 4th switch valve (4), the first separator (f1), the second separator (f2), the 3rd separator (f3), compression
Machine (c1), condenser (e4), air cooler (e5) and the first pipe conveying fluid are to the 29th pipe conveying fluid；Precool heat exchanger device (e1) is provided with three
Cooling duct first cooling duct of article mutual heat exchange, the second cooling duct and the 3rd cooling duct, the 3rd cooling duct is subject to
The cooling working medium flowing through the 3rd cooling duct is lowered the temperature with refrigeration first cooling duct, the second cooling duct, and supplementary cooler (e2) sets
Have three articles can be by cooling duct the 4th cooling duct of refrigeration, the 5th cooling duct and the 6th cooling duct, primary cooler
(e3) being provided with four articles can be by cooling duct the 7th cooling duct of refrigeration, the 8th cooling duct, the 9th cooling duct and the tenth
Cooling duct, condenser (e4) is provided with two flow inlet first flow inlet and the second flow inlet；When liquefied natural gas is pre- cold
During the removing system work of case heavy hydrocarbon, the first pipe conveying fluid passes through the first cooling duct and connects the heavy hydrocarbon scrubbing tower (t1) erect near it
The oil phase flow inlet that the position of lower end is provided with, the gas phase outflow tube that heavy hydrocarbon scrubbing tower (t1) upper end is provided with passes sequentially through the second defeated stream
Pipe, the 4th cooling duct, the 3rd pipe conveying fluid, the 7th cooling duct, be serially connected with first switch valve (1) the 4th pipe conveying fluid connect perpendicular
The flow inlet that the position that vertical heavy hydrocarbon separator (v1) is located between its top and bottom is provided with, heavy hydrocarbon separator (v1) lower end sets
Some liquid phases go out head piece and pass through the heavy hydrocarbon surge tank (v2) of the 5th pipe conveying fluid connection accumbency positioned at the portion between its front end and rear end
The flow inlet that is provided with of position, what heavy hydrocarbon surge tank (v2) front end was provided with go out head piece passes sequentially through the 6th pipe conveying fluid and connects reflux pump (p)
Flow inlet, the head piece that goes out of reflux pump (p) connects heavy hydrocarbon scrubbing tower (t1) by the 7th pipe conveying fluid and sets near the position of its upper end
Some cleaning mixture flow inlet, the gas phase that heavy hydrocarbon separator (v1) upper end is provided with goes out head piece and passes sequentially through the 8th pipe conveying fluid, the 8th cold
But passage, be serially connected with second switch valve (2) the 9th pipe conveying fluid connect erect lng holding vessel (v3) be located at its top and bottom
Between the flow inlet that is provided with of position, what lng holding vessel (v3) upper end was provided with go out head piece passes through the tenth pipe conveying fluid and connects condenser
(e4) the first flow inlet being provided with, it is perpendicular by the 11st pipe conveying fluid connection that the liquid phase that heavy hydrocarbon scrubbing tower (t1) lower end is provided with goes out head piece
The flow inlet that vertical dethanizer (t2) is provided near the position of its upper end, the gas phase that dethanizer (t2) upper end is provided with goes out head piece
Connect the 12nd pipe conveying fluid, the liquid phase that dethanizer (t2) lower end is provided with goes out head piece and passes through the mixed of the 13rd pipe conveying fluid connection setting
The flow inlet that the position that hydrocarbon holding vessel (st1) is located between its top and bottom is provided with, mixed hydrocarbon holding vessel (st1) upper end is provided with
Gas phase goes out head piece and connects the 14th pipe conveying fluid, and the liquid phase that mixed hydrocarbon holding vessel (st1) is provided near the position of its lower end goes out head piece even
Connect the 15th pipe conveying fluid, the head piece that goes out of condenser (e4) passes sequentially through the 29th pipe conveying fluid, the second cooling duct, the 16th defeated
Flow tube connects the flow inlet that the first separator (f1) erect is provided with, the first separator positioned at the position between its top and bottom
(f1) what upper end and low side were respectively equipped with go out head piece passes sequentially through jointly the 17th pipe conveying fluid, the 5th cooling duct, the 18th defeated
Flow tube connects the flow inlet that the second separator (f2) erect is provided with, the second separator positioned at the position between its top and bottom
(f2) upper end is connected the 19th pipe conveying fluid jointly with the head piece that goes out that low side is respectively equipped with, and the 19th pipe conveying fluid passes sequentially through the 20th
Pipe conveying fluid, the 9th cooling duct, the 22nd pipe conveying fluid being serially connected with the 3rd switch valve (3), the tenth cooling duct connect second
13 pipe conveying fluids the 21st pipe conveying fluid connection the 23rd pipe conveying fluid by being serially connected with the 4th switch valve (4), the 20th
Three pipe conveying fluids pass sequentially through the 6th cooling duct and connect the 24th pipe conveying fluid, the 24th pipe conveying fluid and the 28th pipe conveying fluid
The flow inlet that the position that common the 3rd separator (f3) connecting setting is located between its top and bottom is provided with, the 3rd separator
(f3) gas phase that upper end is provided with goes out the flow inlet that head piece passes through the 25th pipe conveying fluid connection compressor (c1), compressor (c1)
Go out head piece and pass through the flow inlet that the 26th pipe conveying fluid connects air cooler (e5), the head piece that goes out of air cooler (e5) passes through the 27th
Pipe conveying fluid connects the second flow inlet that condenser (e4) is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620872105.0U CN205897701U (en) | 2016-08-11 | 2016-08-11 | Liquefied natural gas precooling cold box heavy hydrocarbon desorption system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620872105.0U CN205897701U (en) | 2016-08-11 | 2016-08-11 | Liquefied natural gas precooling cold box heavy hydrocarbon desorption system |
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| Publication Number | Publication Date |
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| CN205897701U true CN205897701U (en) | 2017-01-18 |
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ID=57782122
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620872105.0U Active CN205897701U (en) | 2016-08-11 | 2016-08-11 | Liquefied natural gas precooling cold box heavy hydrocarbon desorption system |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726731A (en) * | 2017-10-26 | 2018-02-23 | 枣庄学院 | The liquefied natural gas (LNG) production device and its production technology of a kind of anti-frozen block |
| CN108485740A (en) * | 2018-05-29 | 2018-09-04 | 成都赛普瑞兴科技有限公司 | A kind of liquefied natural gas purifier and method |
| CN112300844A (en) * | 2020-11-13 | 2021-02-02 | 大庆市中瑞燃气有限公司 | LNG liquefied heavy hydrocarbon removal method |
-
2016
- 2016-08-11 CN CN201620872105.0U patent/CN205897701U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726731A (en) * | 2017-10-26 | 2018-02-23 | 枣庄学院 | The liquefied natural gas (LNG) production device and its production technology of a kind of anti-frozen block |
| CN108485740A (en) * | 2018-05-29 | 2018-09-04 | 成都赛普瑞兴科技有限公司 | A kind of liquefied natural gas purifier and method |
| CN112300844A (en) * | 2020-11-13 | 2021-02-02 | 大庆市中瑞燃气有限公司 | LNG liquefied heavy hydrocarbon removal method |
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