CN101699126B - Production method of steel cylinder for adsorbing natural gas at low and middle pressure and natural gas charging and using method - Google Patents
Production method of steel cylinder for adsorbing natural gas at low and middle pressure and natural gas charging and using method Download PDFInfo
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- CN101699126B CN101699126B CN2009101544261A CN200910154426A CN101699126B CN 101699126 B CN101699126 B CN 101699126B CN 2009101544261 A CN2009101544261 A CN 2009101544261A CN 200910154426 A CN200910154426 A CN 200910154426A CN 101699126 B CN101699126 B CN 101699126B
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Abstract
The invention relates to a production method of steel cylinder for adsorbing natural gas at low and middle pressure, which is characterized by comprising the following steps: (1) according to GB 5100, welding the housing of the steel cylinder; (2) under the state that vibration frequency is 80-200 Hz, filling granular porous carbonaceous adsorbent into the housing; (3) installing a filter plant which prevents adsorbent from being taken out of the housing on the inlet of the housing in the inflating and deflating process, and tightly screwing the valve; and (4) adding malodorant according to GB/T 19206-2003. The invention also relates to a steel cylinder charging method and the deflating method thereof. Compared with the prior art and the normal natural gas storage steel cylinder, the steel cylinder for adsorbing natural gas at low and middle pressure of the invention has the advantages of high safety performance, favourable moving reliability, strong gas storage capacity, favourable recharging repetitiveness, simple recharging technology, low production cost and the like, and fills the blank of the existing storage technology of the mobile natural gas at low and middle pressure.
Description
Technical field
The present invention relates to mesolow adsorption type natural gas-storing fills the method for rock gas and uses rock gas in the steel cylinder with steel cylinder and in this steel cylinder method.
Background technique
Rock gas is as a kind of clean energy resource, and the no waste residue in burning back, waste water produce, and have safe in utilization, advantages such as calorific value is high, cleaning.Gas source is extensive, has been widely used in fields such as generating, industrial chemicals, civilian and commercial combustion gas, the automobile-used energy.Yet because the overcritical characteristic under STP, rock gas has low-down density at this moment, and this has very low volume energy density with regard to making rock gas compare conventional liquid fuel.Therefore need take certain technical measures to reach normal a large amount of purpose of using rock gas.Clearly proposed to enlarge the use dynamics of rock gas in country's the Tenth Five-Year Plan (2001-2005), but it utilizes speed and development scale all will be limited by the rock gas accumulating link between the place of production and market.At present, the storage of rock gas and means of transportation can be divided into: compressed natural gas (CNG), pipeline gas (PNG), LNG Liquefied natural gas (LNG), absorbed natural gas (ANG) and hydration rock gas (NGH).At present in the world, pipeline gas is the main mode of natural gas transportation, is applicable to long-distance transportation.The pressure store of compressed natural gas can be applicable to aspects such as CNG automobile, sub-district air feed and city natural gas pipe network peak regulation up to 20Mpa.China CNG technology has developed more than 20 year, has formed ripe industry development pattern, and along with the rise of price of fuel oil, its advantage can grow with each passing day.But the CNG technology exists that the investment quality big, gas cylinder of high power consumption, high pressure filling equipment of multistage compression is heavy, cost is high and Safety performance remains problem such as further perfect.LNG is the technology of rock gas being carried out natural gas liquefaction low-temperature storage under the temperature that is lower than its boiling point (161 ℃), and it is very high that it crosses range request for the design of reservoir vessel and supply, is only applicable to the automobile-used carrier of part.NGH obtains paying close attention to as a kind of new rock gas safety in transportation and storage technology gradually, but it is very high to the accumulating conditional request, and it is developed still in experimental stage by the commercial Application that the hydrate state discharges rock gas.Comparatively speaking; The ANG technology that under lower pressure state, obtains higher stored energy density through physisorption all have aspect absorption and manufacturing technology, the Safety performance CNG incomparable advantage, all show its huge development potentiality as a kind of flexible adaptation and exploitation market, downstream, the dull property and risk, the enriching gas industrial chain aspect that reduce single accumulating mode.
Absorption natural gas-storing (ANG) technology is the special-purpose sorbent of rock gas of high-specific surface area of in container, packing into, utilizes its huge internal surface area and abundant microporous structure, under normal temperature, middle pressure (6.0MPa) with the technology of rock gas absorption storage.It is 2.5～6.0MPa that the great advantage of ANG is under the lower pressure, is merely 1/4～1/5 of CNG, can obtain to approach the stored energy density of CNG under the high pressure.When pressure was lower than the external world in the container, gas was attracted to the surface of adsorbent solids micropore, was able to store; When the pressure in the external world was lower than in the container pressure, gas goes out supply from the adsorbent solids surface desorption extraneous.This adsorption phenomena belongs to physical absorption.
States such as the U.S., Canada, Britain, Australia, Japan have been as far back as just having carried out this Study on Technology the seventies and eighties in last century, domesticly are devoted to this technological developing history and relatively lag behind.The absorption storaging and transport technology mainly comprises preparation of adsorbent and correlation technique research thereof, and wherein preparation of adsorbent mainly comprises two technology essential factors: powder preparation of adsorbent and forming technique; Correlation technique mainly comprises exploitation of sorbent working life and influence factor thereof, contactor etc.Comparatively speaking, preparation of adsorbent and forming technique and relevant usability research is maturation relatively, but for the exploitation of contactor, along with the increase of commercial Application demand in recent years, just carries out gradually.The pressure store of ANG is lower than CNG, and the design pressure of its container is also lower, lighter weight.The CNG container has unified standard at home, realized producing in batches and large-scale application, but contactor still is in conceptual phase.Contactor has himself characteristic, promptly will take into full account the regeneration of heat of adsorption effect and sorbent.For the adsorbent reactivation problem, mainly consider its regeneration techniques requirement, generally be under vacuum, to get final product the vessel temp rising for about 150 ℃.For the heat of adsorption effect problem; Should consider from following two aspects: 1. aspect the storage of vehicle fuel; Can make full use of the low characteristics of ANG gas storage pressure; Develop and both be beneficial to the thin-wall special-shaped container that rationally utilizes the automobile useful space also to be beneficial to heat radiation, but receive the restriction of material and level of processing, the at present domestic ability of still not having this type of container of exploitation; 2. aspect scale accumulating or gas peak regulation, can be on existing CNG container base of design, the requirement that suitable temperature adjustment coil pipe can satisfy ANG is installed by portion within it.Therefore, the manufacturing of on the basis of CNG container design and manufacturing technology, carrying out the ANG container is a comparatively reasonably thinking of development.At present, developed countries is because the container manufacture level is higher, and the ANG container still occupies than great share in market; And only adsorption technology is used to develop lightweight, special-shaped vehicle-mounted ANG container; Still there is not relevant report at present about adsorption type natural gas steel cylinder production method.
Summary of the invention
Technical problem to be solved by this invention is the present situation to existing technology, provides a kind of adsorbing natural gas at low and middle pressure to use production method of steel cylinder.
Another technical problem to be solved by this invention provides a kind of method of using the adsorbing natural gas at low and middle pressure steel cylinder to fill rock gas.
Another technical problem to be solved by this invention provides the method for using of rock gas in a kind of adsorbing natural gas at low and middle pressure steel cylinder.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: this adsorbing natural gas at low and middle pressure is used production method of steel cylinder, it is characterized in that comprising the steps:
1. weld the housing of steel cylinders by GB GB 5100, and the nominal volume of this housing is not more than 75L;
2. be to be 1500m with specific surface area under the state of 80-200 hertz in vibration frequency
2～3000m
2Granular porous carbon absorbent charges in the described housing, and the filling density of sorbent is 0.2～0.3Kg/L;
3. install in the ingress of said housing prevent to fill, sorbent is taken out of the filtrating equipment of housing by rock gas in the deflation course, is screwed into valve then;
4. add odorant by GB GB/T19206-2003, tighten valve then, promptly make and to be used for adsorbing natural gas at low and middle pressure and to use steel cylinder.
Described filtrating equipment is a screen cloth, and its aperture is not more than 15 μ m.
The concentration of said odorant is more than or equal to 4g/L.
A kind of methods for filling of adsorbing natural gas at low and middle pressure steel cylinder is characterized in that comprising the steps:
1. open valve, in the time of reference temperature 0-40 ℃, the speed that fills with 0.5～2.0m3/h under nominal operating pressure at the uniform velocity charges into rock gas in the described steel cylinder; Wherein said nominal operating pressure is 2.5～4.0Mpa;
2. throttle down leaves standstill the steel cylinder that has filled rock gas 8～12 hours, promptly obtains having filled the steel cylinder of rock gas.
It is characterized in that outside steel cylinder, to adopt in the filling process method of cold water or frozen water spray to keep described reference temperature.
It is characterized in that methane concentration is more than or equal to 86% in the described rock gas, many carbon component concentrations is less than 5%.
It is characterized in that said housing when the repeated charging rock gas, the residual pressure in the steel cylinder should be smaller or equal to 0.05MPa, and repeated charging pressure is 0.05～0.15 times of said nominal operating pressure.
The said steel cylinder that has filled rock gas is with more than or equal to 2.0m
3/ h and less than 10m
3When the speed of/h is exitted continuously, need under 0～40 ℃ temperature conditions, to carry out.
The said steel cylinder that has filled rock gas is in 15-25 ℃ ambient temperature range, and its one-time continuous discharge quantity is more than or equal to 60% of natural gas charging amount in the said steel cylinder.
It is characterized in that to adopt when big flow uses rock gas continuously a plurality of steel cylinder parallel connections to use.
The absorption bottle that the present invention relates to is compared with the rock gas storage cylinder fitted of routine; Have its Safety performance high, move good reliability, gas storage capability strong, fill good reproducibility, fill advantages such as technology is simple, cost of production is low, filled up the blank of present mesolow mobile natural gas storing technology.
Description of drawings
The floor map of Fig. 1 embodiment of the invention broken section structure.
The natural gas charging schematic flow sheet that Fig. 2 relates to for the embodiment of the invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment 1-embodiment 5
Be illustrated in figure 1 as the sectional structure chart of steel cylinder; Make housing 1 according to standard GB 5100 " steel welding gas cylinder " by the welding of professional production producer; The maximum limit level pressure power of this housing in the time of 20 ℃ is 4.0MPa, and hydraulic test pressure is 7.5MPa (gauge pressure), and nominal volume is not more than 75L.
With rock gas carbonaceous adsorption stuffing 11, under vibration frequency is the state of 80-200 hertz, join in the housing together; The specific surface area of adsorption stuffing 11 is 1500～3000m
2, size of grain is 0.1～2mm, freely settled density is 100～400Kg/m
3
After adsorption stuffing fills and finishes, install the filtrating equipment of making smaller or equal to 15 μ m screen clothes with the aperture 2 in the ingress of bottle, then valve 3 is screwed into, this steel cylinder is promptly made completion.
In bottle, inject odorant through valve 3, this odorant should meet the requirement of GB/T 19206-2003 " rock gas is with the requirement and the test method of organosulfur compound odorant ", and the concentration of odorant is 4-10g/L in the steel cylinder.
Be illustrated in figure 2 as the schematic flow sheet that in steel cylinder, fills rock gas; Adopt pressure-increasing machine 4 can the natural gas boosting of lower pressure be arrived the filling pressure 2.5～4.0MPa of absorption bottle; Under 15-25 ℃ through stop valve 5, fill pipeline 6 and flowmeter 7 and get into and fill with cylinder manifold 8, can control the speed that fills of rock gas through flowmeter 7; Embodiment 1 to embodiment 5 the speed that fills be 0.5～2.0m
3/ h; Adopt pressure gauge 9 to can read the real-time filling pressure of steel cylinder; Adopt safety valve 10 as bleeder, when filling pressure is higher than the maximum filling pressure of steel cylinder, open, can effectively protect and fill safety.
Since can produce heat of adsorption in the filling process, the temperature that therefore needs control to fill, and temperature control method can be selected the outside heat extraction method of cold water or frozen water spray steel cylinder outer wall for use.The natural gas chemistry component that is filled requires to meet the requirement of GB17820-1999, and methane concentration is greater than 86% in the present embodiment, and its many carbon concentration of component is less than 5%.Filling the back bottle that finishes left standstill 8～12 hours.
Fill the absorption bottle after the completion, when needing to use, open valve, rock gas promptly can desorption, release on adsorption stuffing under pressure.
When steel cylinder with more than or equal to 2.0m
3/ h and less than 10m
3When the continuously big flow of the speed of/h is exitted, can adopt a plurality of steel cylinders parallel connections, under 15 ℃～30 ℃ temperature conditions, carry out, and its one-time continuous discharge quantity is more than or equal to 60% of natural gas charging amount in the said steel cylinder.
Embodiment 1 to concrete Fabrication parameter of the embodiment 5 with to fill parameter as shown in table 1.
Table 1
| Embodiment's numbering | Volume (L) | Empty bottle heavy (Kg) | Vibration frequency (hertz) | Filler packing density (Kg/ m 3) | Packing specific area (m 2/g ) | Filler weight (Kg) | Odorant weight (Kg) | Fill temperature (℃) | Filling pressure (Mpa) | Fill the time (hour) | Filling weight (Kg) | Quiescence time (hour) |
| 1 | 74 | 36.5 | 85 | 250 | 1650 | 21.96 | 0.3 | 25 | 2.5 | 1 | 3.2 | 12 |
| 2 | 40.3 | 25.3 | 100 | 320 | 1500 | 13.3 | 0.15 | 25 | 4.0 | 2 | 2.5 | 8 |
| 3 | 8.0 | 11.1 | 95 | 320 | 1900 | 4.2 | 0.03 | 22 | 3.8 | 0.5 | 0.8 | 8 |
| 4 | 52.6 | 38.7 | 100 | 270 | 2100 | 15.5 | 0.2 | 19 | 4.0 | 2.5 | 2.52 | 12 |
| 5 | 42.8 | 26.8 | 90 | 270 | 2450 | 12.5 | 0.18 | 20 | 4.0 | 2.5 | 2.03 | 8 |
A releasing quantity of the above-mentioned steel cylinder that has filled rock gas is as shown in table 2
Table 2
| Outgassing rate (m 3/h) | Discharge temperature (℃) | A releasing quantity (Kg) | Account for the ratio (%) of rock gas total amount in the steel cylinder | |
| Embodiment 1 | 4.2 | 21 | 2.7 | 84 |
| Embodiment 1 and embodiment's 2 parallel connections | 5.9 | 24 | 4.44 | 78 |
| |
4.1 | 22 | 0.6 | 75 |
| Embodiment 4 | 3.8 | 15 | 1.98 | 78 |
| Embodiment 5 | 4.0 | 20 | 1.6 | 80 |
Claims (8)
1. an adsorbing natural gas at low and middle pressure is used production method of steel cylinder, it is characterized in that comprising the steps:
1. weld the housing of steel cylinders by GB GB 5100, and the nominal volume of this housing is not more than 75L;
2. be to be 1500m with specific surface area under the state of 80-200 hertz in vibration frequency
2～3000m
2Granular porous carbon absorbent charges in the described housing, and the filling density of sorbent is 0.2～0.3Kg/L;
3. install in the ingress of said housing prevent to fill, sorbent is taken out of the filtrating equipment of housing by rock gas in the deflation course, is screwed into valve then; Wherein said filtrating equipment is a screen cloth, and the aperture of screen cloth is not more than 15 μ m;
4. in bottle, inject odorant through valve, this odorant meets the requirement of GB/T 19206-2003, and the concentration of odorant is 4-10g/L in the steel cylinder; Tighten valve then, promptly make and to be used for adsorbing natural gas at low and middle pressure and to use steel cylinder.
2. one kind is used adsorbing natural gas at low and middle pressure as claimed in claim 1 in the adsorbing natural gas at low and middle pressure steel cylinder, to fill the method for rock gas with steel cylinder, it is characterized in that comprising the steps:
1. open valve, in the time of reference temperature 0-40 ℃, under nominal operating pressure with 0.5～2.0m
3The speed that fills of/h at the uniform velocity charges into rock gas in the described steel cylinder; Wherein said nominal operating pressure is 2.5～4.0Mpa;
2. throttle down leaves standstill the steel cylinder that has filled rock gas 8～12 hours, promptly obtains having filled the steel cylinder of rock gas.
3. the method that in the adsorbing natural gas at low and middle pressure steel cylinder, fills rock gas according to claim 2 is characterized in that outside steel cylinder, adopting in the filling process method of cold water or frozen water spray to keep described reference temperature.
4. the method that in the adsorbing natural gas at low and middle pressure steel cylinder, fills rock gas according to claim 2 is characterized in that methane concentration is more than or equal to 86% in the described rock gas, and many carbon component concentrations is less than 5%.
5. according to claim 2, the 3 or 4 described methods that in the adsorbing natural gas at low and middle pressure steel cylinder, fill rock gas; It is characterized in that said housing is when the repeated charging rock gas; Residual pressure in the steel cylinder should be smaller or equal to 0.05MPa, and repeated charging pressure is 0.05～0.15 times of said nominal operating pressure.
6. the method for using that has filled the adsorbing natural gas at low and middle pressure steel cylinder of rock gas according to claim 2 is characterized in that the said steel cylinder that has filled rock gas is with more than or equal to 2.0m
3/ h and less than 10m
3When the speed of/h is exitted continuously, need under 0～40 ℃ temperature conditions, to carry out.
7. method for using according to claim 6 is characterized in that the said steel cylinder that has filled rock gas in 15-25 ℃ ambient temperature range, and its one-time continuous discharge quantity is more than or equal to 60% of natural gas charging amount in the said steel cylinder.
8. according to claim 6 or 7 described methods for using, it is characterized in that big flow adopts a plurality of steel cylinder parallel connections to use when using rock gas continuously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101544261A CN101699126B (en) | 2009-10-27 | 2009-10-27 | Production method of steel cylinder for adsorbing natural gas at low and middle pressure and natural gas charging and using method |
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|---|---|
| CN101699126A CN101699126A (en) | 2010-04-28 |
| CN101699126B true CN101699126B (en) | 2012-02-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105209815A (en) * | 2013-03-14 | 2015-12-30 | 研究三角协会 | Gas storage modules, apparatus, systems and methods utilizing adsorbent materials |
| JP6179273B2 (en) * | 2013-08-27 | 2017-08-16 | スズキ株式会社 | Fuel gas filling device |
| CN104595704B (en) * | 2015-01-26 | 2016-06-22 | 卢亨俊 | A kind of natural gas ANG automobile steel bottle aerating device and method thereof |
| CN105570674A (en) * | 2015-12-22 | 2016-05-11 | 重庆市高新技术产业开发区潞翔能源技术有限公司 | Biogas absorption device with heat exchange function |
| CN105570676A (en) * | 2015-12-22 | 2016-05-11 | 重庆市高新技术产业开发区潞翔能源技术有限公司 | High-temperature adsorption filling system |
| CN107355674A (en) * | 2017-08-03 | 2017-11-17 | 惠州市美亚飞电器有限公司 | A kind of oxygen tank and its method for increasing oxygen storage quantity |
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