CN204460933U - A kind of CNG device with light ends unit - Google Patents
A kind of CNG device with light ends unit Download PDFInfo
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- CN204460933U CN204460933U CN201520092589.2U CN201520092589U CN204460933U CN 204460933 U CN204460933 U CN 204460933U CN 201520092589 U CN201520092589 U CN 201520092589U CN 204460933 U CN204460933 U CN 204460933U
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- lighter hydrocarbons
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- knockout drum
- compression
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Abstract
The utility model discloses a kind of CNG device with light ends unit, comprise being connected to and one stage of compression refrigerated separation device has split-compressor, split-compressor connects secondary coolers, secondary coolers is connected with handpiece Water Chilling Units, handpiece Water Chilling Units is connected with lighter hydrocarbons knockout drum, the bottom of lighter hydrocarbons knockout drum arranges outlet and is connected with light hydrocarbon storage tank, pressure-reducing valve is provided with between lighter hydrocarbons knockout drum and described lighter hydrocarbons storage tank, the port of export of lighter hydrocarbons knockout drum is also provided with direct-operated regulator, direct-operated regulator is connected with three stage compression refrigerated separation device and level Four compression cooling device, level Four compression cooling device is connected with CNG gathering-device.The beneficial effects of the utility model are: the effect being realized cooling by the handpiece Water Chilling Units arranged, the effect that lighter hydrocarbons knockout drum achieves lighter hydrocarbons and gas separaion is set, arranging pressure-reducing valve makes light component come back to compressibility, in addition the utility model also have reclaim convenient, the features such as the high and cost of manufacture of organic efficiency is low.
Description
Technical field
The utility model relates to a kind of CNG device with light ends unit.
Background technology
Compressed natural gas (being called for short CNG) is that natural gas (being called for short NG) pressurization stores in a reservoir with gaseous state, uses mainly as motor vehicle fuel.CNG is a kind of desirable automobile-used alternative energy source, and its application technology reaches its maturity through many decades development.The features such as it is low that it has cost, high efficiency, pollution-free, and use safety is convenient, demonstrate powerful development potentiality just day by day; Lighter hydrocarbons are also called gas reducing liquid (NGL), and composition covers C2 ~ C6
+.Lighter hydrocarbons recovery refers in natural gas than the process that methane or the heavier component of ethane reclaim in liquid form.Its object be on the one hand hydrocarbon dew point in order to control natural gas to reach commodity makings figureofmerit, avoid gas liquid two-phase flow; On the other hand, the liquid hydrocarbon of recovery has very large economic worth, can directly be used as fuel or be separated into ethane, propane, butane or the third butane mixture (liquefied gas), light oil etc. further, also can be used as industrial chemicals.
Current small-sized associated gas pressurization preparation CNG main processes is for will boost to 20Mpa through natural gas compressor after the drying of 0.3 ~ 0.8Mpa low pressure natural gas, lighter hydrocarbons are directly sold as CNG during the course, waste valuable lighter hydrocarbons resource, reduce the utilization ratio of associated gas.
For the problem in correlation technique, at present effective solution is not yet proposed.
Utility model content
The purpose of this utility model is to provide a kind of CNG device with light ends unit, to overcome currently available technology above shortcomings.
The purpose of this utility model is achieved through the following technical solutions:
A kind of CNG device with light ends unit, comprise one stage of compression refrigerated separation device, described one stage of compression refrigerated separation device is connected with split-compressor, described split-compressor connects secondary coolers, described secondary coolers is connected with handpiece Water Chilling Units, described handpiece Water Chilling Units is connected with lighter hydrocarbons knockout drum, the bottom of described lighter hydrocarbons knockout drum is connected with lighter hydrocarbons storage tank, pressure-reducing valve is provided with between described lighter hydrocarbons knockout drum and described lighter hydrocarbons storage tank, the top outlet of described lighter hydrocarbons knockout drum is also provided with direct-operated regulator, described direct-operated regulator is connected with three stage compression refrigerated separation device, described three stage compression refrigerated separation device is connected with level Four compression cooling device, described level Four compression cooling device is connected with CNG gathering-device.
Further, described one stage of compression refrigerated separation device comprises stage compressor, described stage compressor is connected with one-level cooler, and described one-level cooler is connected with one stage of compression knockout drum.
Further, described three grades of cooling devices comprise the three-stage blower be connected with described direct-operated regulator, described three-stage blower are connected with three grades of coolers, and described three grades of coolers are connected with three grades of knockout drums.
The beneficial effects of the utility model are: the beneficial effects of the utility model are: realize by arranging handpiece Water Chilling Units the effect that natural gas cools to about 5 DEG C, the effect of lighter hydrocarbons and gas separaion is achieved by arranging lighter hydrocarbons knockout drum, arranging pressure-reducing valve makes light component come back to compressibility, avoid the waste of natural gas, direct-operated regulator is set to ensure that the pressure of lighter hydrocarbons knockout drum is at about 2.5MPa, be easy to realize lighter hydrocarbons be separated with light-component gas, in addition the utility model also have reclaim convenient, the features such as the high and cost of manufacture of organic efficiency is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the CNG apparatus structure schematic diagram with light ends unit according to the utility model embodiment.
In figure:
1, one stage of compression refrigerated separation device; 2, split-compressor; 3, secondary coolers; 4, handpiece Water Chilling Units; 5, lighter hydrocarbons knockout drum; 6, lighter hydrocarbons storage tank; 7, pressure-reducing valve; 8, direct-operated regulator; 9, three stage compression refrigerated separation device; 10, level Four compression cooling device; 11, CNG gathering-device; 12, stage compressor; 13, one-level cooler; 14, one-level knockout drum; 15, three-stage blower; 16, three grades of coolers; 17, three grades of knockout drums.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
As shown in Figure 1, a kind of CNG device with light ends unit according to embodiment of the present utility model, comprise one stage of compression refrigerated separation device 1, described one stage of compression refrigerated separation device 1 is connected with split-compressor 2, described split-compressor 2 connects secondary coolers 3, described secondary coolers 3 is connected with handpiece Water Chilling Units 4, described handpiece Water Chilling Units 4 is connected with lighter hydrocarbons knockout drum 5, the bottom of described lighter hydrocarbons knockout drum 5 is provided with lighter hydrocarbons storage tank 6, pressure-reducing valve 7 is provided with between described lighter hydrocarbons knockout drum 5 and described lighter hydrocarbons storage tank 6, the top outlet of described lighter hydrocarbons knockout drum 5 is also provided with direct-operated regulator 8, described direct-operated regulator 8 is connected with three stage compression refrigerated separation device 9, described three stage compression refrigerated separation device 9 is connected with level Four compression cooling device 10, described level Four compression cooling device 10 is connected with CNG gathering-device 11.
Further, continue with reference to Fig. 1, in one embodiment, described one stage of compression refrigerated separation device 1 comprises stage compressor 12, and described stage compressor 12 is connected with one-level cooler 3, and described one-level cooler 13 is connected with one-level knockout drum 14.
Further, continue with reference to Fig. 1, in one embodiment, described three stage compression refrigerated separation 9 comprises the three-stage blower 15 be connected with described direct-operated regulator 8, described three-stage blower 15 is connected with three grades of coolers 16, described three grades of coolers 16 are connected with three grades of knockout drums 17.
Wherein, the pressure of lighter hydrocarbons knockout drum is ensured by direct-operated regulator, the separation process entering lighter hydrocarbons and light component is made to be stabilized in about 2.5MPa, be easy to realize being separated, and temperature drops to about 5 DEG C after described natural gas via subcooled water unit, ensure that lighter hydrocarbons can liquefy, water freezing can not be made again, lighter hydrocarbons are by after pressure-reducing valve, pressure drops to necessarily (about 1.5MPa), and part lighter hydrocarbons are vaporized, and enter between the suitable pressure stage of compressor from light hydrocarbon storage tank top, continue pressurization, remaining part is the light hydrocarbon product obtained.
Wherein, the hydrocarbonaceous low pressure natural gas such as oil gas field, gas well, pipeline gas, gas station are through stage compressor 12, and one-level cooler 13 enters one-level knockout drum 14 after cooling, and isolates condensation water; Continue to enter split-compressor 2, secondary coolers 3, and be cooled to 5 DEG C through handpiece Water Chilling Units 4, enter into hydrocarbon knockout drum 5, lighter hydrocarbons and gas separaion, the direct-operated regulator 8 be arranged on lighter hydrocarbons knockout drum 5 gas exit line ensures that the pressure of lighter hydrocarbons separation process is at about 2.5MPa; Then gas is through three-stage blower 15, enters three grades of knockout drums 17 after three grades of coolers 16, and after entering level Four compression cooling device 10, pressure reaches 20MPa becomes CNG simultaneously.
Further, lighter hydrocarbons enter lighter hydrocarbons storage tank 6 through pressure-reducing valve 7 decompression to 1.5MPa, and in lighter hydrocarbons storage tank 6, the flash distillation of part lighter hydrocarbons is gas, returns in one stage of compression knockout drum 14 and compresses separation further, and remaining lighter hydrocarbons become product.
Citing, volume fraction shared by each composition of certain gas well natural gas: methane is 50%, ethane is 15%, and propane is 12%, and iso-butane is 8%, and normal butane is 5%, and isopentane is 4%, and pentane is 1%, and carbon dioxide is 4%, and water is 1%.Natural gas is with 40 DEG C, and 0.3MPa (gauge pressure), 3000Nm3/d enter the CNG device with light ends unit, and reaches recyclable lighter hydrocarbons 872Nm3/d (1910kg/d) every day, produces CNG2115Nm3/d.
In sum, by means of technique scheme of the present utility model, the beneficial effects of the utility model are: realize by arranging handpiece Water Chilling Units the effect that natural gas cools to about 5 DEG C, the effect of lighter hydrocarbons and gas separaion is achieved by arranging lighter hydrocarbons knockout drum, arranging pressure-reducing valve makes light component come back to compressibility, avoid the waste of natural gas, direct-operated regulator is set to ensure that the pressure of lighter hydrocarbons knockout drum is at about 2.5MPa, be easy to realize lighter hydrocarbons be separated with light-component gas, in addition the utility model also has recovery conveniently, the feature such as the high and cost of manufacture of organic efficiency is low.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the CNG device with light ends unit, comprise one stage of compression refrigerated separation device (1), it is characterized in that, described one stage of compression refrigerated separation device (1) is connected with split-compressor (2), described split-compressor (2) connects secondary coolers (3), described secondary coolers (3) is connected with handpiece Water Chilling Units (4), described handpiece Water Chilling Units (4) is connected with lighter hydrocarbons knockout drum (5), the bottom of described lighter hydrocarbons knockout drum (5) is connected with lighter hydrocarbons storage tank (6), pressure-reducing valve (7) is provided with between described lighter hydrocarbons knockout drum (5) and described lighter hydrocarbons storage tank (6), the port of export of described lighter hydrocarbons knockout drum (5) is also provided with direct-operated regulator (8), described direct-operated regulator (8) is connected with three stage compression refrigerated separation device (9), described three stage compression refrigerated separation device (9) is connected with level Four compression cooling device (10), described level Four compression cooling device (10) is connected with CNG gathering-device (11).
2. the CNG device with light ends unit according to claim 1, it is characterized in that, described one stage of compression refrigerated separation device (1) comprises stage compressor (12), described stage compressor (12) is connected with one-level cooler (13), described one-level cooler (13) is connected with one stage of compression knockout drum (14).
3. the CNG device with light ends unit according to claim 1, it is characterized in that, described three grades of cooling devices (9) comprise the three-stage blower (15) be connected with described direct-operated regulator (8), described three-stage blower (15) is connected with three grades of coolers (16), described three grades of coolers (16) are connected with three grades of knockout drums (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092589.2U CN204460933U (en) | 2015-02-10 | 2015-02-10 | A kind of CNG device with light ends unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092589.2U CN204460933U (en) | 2015-02-10 | 2015-02-10 | A kind of CNG device with light ends unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204460933U true CN204460933U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520092589.2U Expired - Fee Related CN204460933U (en) | 2015-02-10 | 2015-02-10 | A kind of CNG device with light ends unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204460933U (en) |
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2015
- 2015-02-10 CN CN201520092589.2U patent/CN204460933U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160210 |