CN1214209C - Heat storage type liquefied natural gas gasification device - Google Patents
Heat storage type liquefied natural gas gasification device Download PDFInfo
- Publication number
- CN1214209C CN1214209C CN 02157973 CN02157973A CN1214209C CN 1214209 C CN1214209 C CN 1214209C CN 02157973 CN02157973 CN 02157973 CN 02157973 A CN02157973 A CN 02157973A CN 1214209 C CN1214209 C CN 1214209C
- Authority
- CN
- China
- Prior art keywords
- natural gas
- gasification
- heat
- heat exchanger
- liquefied natural
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002309 gasification Methods 0.000 title claims abstract description 54
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 46
- 238000005338 heat storage Methods 0.000 title claims abstract description 34
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000003345 natural gas Substances 0.000 claims abstract description 42
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 22
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 abstract description 10
- 230000008020 evaporation Effects 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 description 3
- 241000237983 Trochidae Species 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000008294 cold cream Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a heat storage type liquefied natural gas gasification device, which is characterized in that natural gas generated by evaporation of a liquefied natural gas storage tank is introduced into the bottom of the gasification device to be ignited and combusted, the heat of combustion is transferred to a heat storage medium on a shell pass through the lower part of a heat exchanger with excellent heat conductivity to carry out phase change heat storage, and the stored heat energy is used for gasifying the liquefied natural gas. The device comprises a heat exchanger; the method is characterized in that: the heat exchanger is characterized by further comprising a heat insulation gasification box for coating the heat exchanger, a heat conduction partition plate is arranged inside the heat insulation gasification box to partition the heat insulation gasification box into a gasification cavity and a heat storage cavity, a spraying pipe which is communicated with the liquefied natural gas storage tank and is provided with a nozzle is arranged in the gasification cavity, a natural gas collecting pipe is arranged at the upper part of the gasification cavity, heat storage media are filled in the heat storage cavity, the heat exchanger penetrates through the heat conduction partition plate, and a steam inlet pipe and an electronic igniter which are communicated with the liquefied natural gas storage tank are arranged inside an. The device not only utilizes the natural gas evaporated by the liquefied natural gas storage tank, but also is beneficial to preventing environmental pollution.
Description
Technical field
The present invention relates to a kind of gasification installation of liquefied natural gas, particularly a kind of gasification installation of heat storage type liquefied natural gas.
Background technology
At present, the gasification installation of common liquefied natural gas is empty temperature shell and tube gasifier or electric heating shell and tube gasifier, the natural gas that all can't utilize the evaporation of liquefied natural gas storage tank to produce.Empty warm shell and tube gasifier is divided into Natural Circulation air-cooled type and forced convection air-cooled type again, because heat transfer temperature difference was excessive when-162 ℃ natural gas liquids gasified in gasifier, through gasification after a while, the gasifier surface is because caused the reduction of gasifier evaporability by the cold cream covering, and this gasifier has the restriction of working time, general continuous operation is no more than 8 hours, and forced convection air-cooled type gasifier also will rely on electric power; There is the financial cost problem of power consumption in electric heating shell and tube gasifier.
Summary of the invention
The objective of the invention is: the gasification installation that overcomes existing liquefied natural gas can't utilize the defective of the natural gas of liquefied natural gas storage tank evaporation, and the restriction on the working time, rely on the deficiency of electric power, thereby provide a kind of heat storage type liquefied natural gas gasifying device.
The object of the present invention is achieved like this: the gasification installation of heat storage type liquefied natural gas of the present invention, the natural gas that the evaporation of liquefied natural gas storage tank is produced feeds the gasification installation bottom, ignition, the heat of burning carries out phase-change thermal storage by the heat-storage medium that the fabulous heat exchanger bottom of heat conductivility passes to shell side, and the heat energy of storage is used to the liquefied natural gas that gasifies.
As shown in Figure 1, the gasification installation of heat storage type liquefied natural gas comprises: heat exchanger; It is characterized in that: comprise that also one coats the thermal insulation gasification case of this heat exchanger, adiabatic gasification case inside is provided with a heat conduction baffle it is divided into gasification chamber and heat accumulation chamber, be provided with the shower that has spout that is connected with LNG tank in the gasification chamber, gasification chamber top is provided with a natural gas discharge, heat accumulation is filled with heat-storage medium in the chamber, described heat exchanger penetrates heat conduction baffle, its outlet stretches out the top of adiabatic gasification case, inlet tube stretches out the bottom of adiabatic gasification case, described inlet tube inside is provided with a steam inlet duct that is connected with LNG tank and an ignition, ignition is positioned at the top of steam inlet duct, and a bypass pipe that by-passing valve is housed is communicated with natural gas discharge and natural gas steam inlet duct.
Described heat exchanger is tubular heat exchanger or plate type heat exchanger; The inlet tube of described heat exchanger is connected with an air blast; Be provided with the check structure in the outlet of described heat exchanger; Described shower is installed near directly over the heat exchanger; Described heat-storage medium is low-melting solid-liquid phase change medium, comprising: paraffin, vacuum grease; Described heat exchanger is positioned at and coats the multilayer capillary net on the tubulation outer surface of gasification chamber; Described capillary network is the parallel capillary curtain that is made into of stainless steel wire screen cloth, copper porous silk screen or capillary.
The gasification installation of heat storage type liquefied natural gas of the present invention, the natural gas that liquefied natural gas storage tank day evaporation is produced is burnt to utilize carries out heat accumulation, the natural gas of liquefied natural gas storage tank evaporation every day is about 0.2% of basin gross reserves, because heating value of natural gas is 100 times of its gasification latent heat approximately, 20% the liquefied natural gas so this part natural gas can gasify also can not cause environmental pollution because of direct discharging; Remaining gasification calorific value is assigned to burn by bypass pipe extraction unit from the back combustion gas of gasifying and is satisfied, and the price of this part natural gas gasifying only is 1/3～1/2 of an electrothermal.
The invention has the advantages that: the gasification installation of heat storage type liquefied natural gas of the present invention has overcome common sky temperature shell and tube gasification installation can not all weather operations and rely on the shortcoming of electric power, overcome the higher deficiency of electrical heating gasification installation use cost, also utilized the natural gas of liquefied natural gas storage tank evaporation, helped preventing the pollution of the environment.
Description of drawings
Fig. 1 is the structure cutaway view of one embodiment of the invention.
The accompanying drawing sign
1, insulated case 2, adiabatic top cover 3, liquefied natural gas gasifying chamber
4, the outlet of heat exchanger 5, shower 6, heat exchanger
7, natural gas discharge 8, capillary network 9, heat conduction baffle
10, the inlet tube 12 of heat-storage medium 11, heat exchanger, natural gas steam inlet duct
13, ignition 14, bypass pipe 15, by-passing valve
The specific embodiment
Embodiment 1
Make the gasification installation of a heat storage type liquefied natural gas.As shown in Figure 1, this device comprises: heat exchanger 4; It is characterized in that: also comprise insulated case 1, adiabatic top cover 2, heat conduction baffle 9, shower 5, natural gas discharge 7, heat-storage medium 10, heat exchanger 4, natural gas steam inlet duct 12, ignition 13, bypass pipe 14, by-passing valve 15; Wherein, heat conduction baffle 9 and insulated case 1 fixed connection, heat exchanger 4 is fixed in the heat conduction baffle 9, heat exchanger 4 top shell sides are liquefied natural gas gasifying chambeies, the shell side of heat exchanger 4 bottoms charges heat-storage medium, natural gas steam inlet duct 12 coaxial inlet tube 11 inside that are fixed on heat exchanger, ignition 13 is fixed in the inlet tube 11 of heat exchanger, be positioned at the top of natural gas steam inlet duct 12, outlet 6 fixed connections of heat exchanger are on adiabatic top cover 2, shower 5 and natural gas discharge 7 fixed connections have a by-passing valve 15 on the bypass pipe 14 on adiabatic top cover 2, its two ends connect natural gas discharge 7 and natural gas steam inlet duct 12 respectively.
In the present embodiment, insulated case 1 and adiabatic top cover 2 flange couplings, insulated case 1 and adiabatic top cover 2 are the double layer of metal housings from the middle filled polyurethane foam of market purchasing, have the effect of insulation; Insulated case 1 and heat conduction baffle 9 welding are fixing, and the material of heat conduction baffle 9 usefulness is a brass; Heat exchanger 4 is stainless steel tubular heat exchangers of ordering from the market, and silver soldering is on heat conduction baffle 9; Natural gas steam inlet duct 12 also adopts stainless steel tube, coaxial arrangement is in inlet tube 11 inside of heat exchanger, ignition 13 is from market purchasing natural gas ignition, is fixed in the inlet tube 11 of heat exchanger, is positioned at the top of natural gas steam inlet duct 12; The shell side of heat exchanger 4 bottoms charges heat-storage medium paraffin 10; Inlet tube 11 external air blasts of heat exchanger.
The top shell side of heat exchanger 4 is liquefied natural gas gasifying chambeies 3, the appearance that is positioned at the heat exchanger 4 of heat conduction baffle 9 tops coats multilayer capillary net 8, capillary network adopts 80 order stainless steel wire screen cloths, its underpart lowering is on heat conduction baffle 9, and purpose is liquid natural gas to be delivered to heat exchanger surface from the bottom so that the evaporation gasification; Burnt gas in the heat exchanger 4 is discharged by the outlet 6 of heat exchanger, and the outlet 6 of heat exchanger is fixed on the adiabatic top cover 2, is provided with the check structure in the pipe.Shower 5 and natural gas discharge 7 are welded on the adiabatic top cover 2, have 4 spouts on the shower 5, are installed in heat exchanger top 15 centimeters.
Bypass pipe 14 two ends are connected on natural gas discharge 7 and the natural gas steam inlet duct 12, and bypass pipe 14 adopts stainless steel; By-passing valve 15 is connected on the bypass pipe 14, is a natural gas adjusting valve from market purchasing.
Embodiment 2
Utilize the gasification installation gasification natural gas of the heat storage type liquefied natural gas of embodiment 1, concrete steps are as follows:
(1) natural gas that the evaporation of liquefied natural gas storage tank is produced feeds heat exchanger by the inlet tube 11 of heat exchanger, ignition 13 ignition, the heat of burning carries out phase-change thermal storage by the heat-storage medium paraffin that the fabulous heat exchanger bottom of heat conductivility passes to shell side, and waste gas after burning is discharged by the outlet 6 of heat exchanger;
(2) liquefied natural gas sprays heat exchanger 4 surfaces by shower 5, and cold is passed to heat exchanger 4 walls;
(3) heat exchanger 4 constantly passes to natural gas with the heat of paraffin 10, and paraffin 10 solidifies heat release, the natural gas liquids endothermic gasification, and the liquid natural gas on the case base spacer rises to heat exchanger 4 surfaces by capillary network 8 and continues evaporation;
(4) natural gas after the gasification is exported to the natural gas user by the natural gas discharge 7 on the adiabatic top cover 2.
Claims (8)
1, a kind of gasification installation of heat storage type liquefied natural gas, this device comprises heat exchanger; It is characterized in that: comprise that also one coats the thermal insulation gasification case of this heat exchanger, adiabatic gasification case inside is provided with a heat conduction baffle it is divided into gasification chamber and heat accumulation chamber, be provided with the shower that has spout that is connected with LNG tank in the gasification chamber, gasification chamber top is provided with a natural gas discharge, heat accumulation is filled with heat-storage medium in the chamber, described heat exchanger penetrates heat conduction baffle, its outlet stretches out the top of adiabatic gasification case, inlet tube stretches out the bottom of adiabatic gasification case, described inlet tube inside is provided with a steam inlet duct that is connected with LNG tank and an ignition, ignition is positioned at the top of steam inlet duct, and a bypass pipe that by-passing valve is housed is communicated with natural gas discharge and natural gas steam inlet duct.
2, according to the gasification installation of the described heat storage type liquefied natural gas of claim 1, it is characterized in that: described heat exchanger is tubular heat exchanger or plate type heat exchanger.
3, according to the gasification installation of the described heat storage type liquefied natural gas of claim 1, it is characterized in that: the inlet tube of described heat exchanger is connected with an air blast.
4, according to the gasification installation of the described heat storage type liquefied natural gas of claim 1, it is characterized in that: be provided with the check structure in the outlet of described heat exchanger.
5, according to the gasification installation of the described heat storage type liquefied natural gas of claim 1, it is characterized in that: described shower is installed near directly over the heat exchanger.
6, according to the gasification installation of the described heat storage type liquefied natural gas of claim 1, it is characterized in that: described heat-storage medium is low-melting solid-liquid phase change medium, comprising: paraffin, vacuum grease.
7, according to the gasification installation of the described heat storage type liquefied natural gas of claim 1, it is characterized in that: described heat exchanger is positioned at and coats the multilayer capillary net on the tubulation outer surface of gasification chamber.
8, according to the gasification installation of the described heat storage type liquefied natural gas of claim 7, it is characterized in that: described capillary network is the parallel capillary curtain that is made into of stainless steel wire screen cloth, copper porous silk screen or capillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02157973 CN1214209C (en) | 2002-12-20 | 2002-12-20 | Heat storage type liquefied natural gas gasification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02157973 CN1214209C (en) | 2002-12-20 | 2002-12-20 | Heat storage type liquefied natural gas gasification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1510337A CN1510337A (en) | 2004-07-07 |
| CN1214209C true CN1214209C (en) | 2005-08-10 |
Family
ID=34236788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02157973 Expired - Fee Related CN1214209C (en) | 2002-12-20 | 2002-12-20 | Heat storage type liquefied natural gas gasification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1214209C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080906A (en) * | 2011-01-25 | 2011-06-01 | 西安交通大学 | Efficient three-medium phase change coupled cold-accumulating and heat-exchanging device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636061A (en) * | 2012-05-14 | 2012-08-15 | 深圳市中矿投资管理有限公司 | Mixed heat-exchange and energy-storage shell-and-tube evaporator |
| CN103899913B (en) * | 2014-03-24 | 2016-06-22 | 华南理工大学 | A kind of portable LNG feeder utilizing remaining used heat |
| CN104266415B (en) * | 2014-10-09 | 2016-06-08 | 上海交通大学 | A kind of Multi-layer plate condenser utilizing LNG cold energy |
| CN107327868B (en) * | 2017-07-12 | 2018-11-30 | 山东理工大学 | A kind of minitype light hydrocarbon combustion gas generation gas-made technology |
-
2002
- 2002-12-20 CN CN 02157973 patent/CN1214209C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080906A (en) * | 2011-01-25 | 2011-06-01 | 西安交通大学 | Efficient three-medium phase change coupled cold-accumulating and heat-exchanging device |
| CN102080906B (en) * | 2011-01-25 | 2013-02-06 | 西安交通大学 | Efficient three-medium phase change coupled cold-accumulating and heat-exchanging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1510337A (en) | 2004-07-07 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |