CN114791087A - Natural gas pressure regulating system - Google Patents
Natural gas pressure regulating system Download PDFInfo
- Publication number
- CN114791087A CN114791087A CN202210555409.4A CN202210555409A CN114791087A CN 114791087 A CN114791087 A CN 114791087A CN 202210555409 A CN202210555409 A CN 202210555409A CN 114791087 A CN114791087 A CN 114791087A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- absorption tower
- valve
- pipeline
- heating
- 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.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 436
- 239000003345 natural gas Substances 0.000 title claims abstract description 217
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 32
- 238000010521 absorption reaction Methods 0.000 claims abstract description 208
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 238000010438 heat treatment Methods 0.000 claims abstract description 84
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 238000001035 drying Methods 0.000 claims abstract description 47
- 230000001172 regenerating effect Effects 0.000 claims abstract description 36
- 230000018044 dehydration Effects 0.000 claims abstract description 11
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 57
- 230000008929 regeneration Effects 0.000 claims description 40
- 238000011069 regeneration method Methods 0.000 claims description 40
- 230000001276 controlling effect Effects 0.000 claims description 33
- 239000000428 dust Substances 0.000 claims description 24
- 239000002808 molecular sieve Substances 0.000 claims description 23
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 23
- 238000005070 sampling Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 18
- 208000005156 Dehydration Diseases 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 230000009467 reduction Effects 0.000 abstract description 8
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
- F17D3/145—Arrangements for supervising or controlling working operations for eliminating water in gas pipelines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a natural gas pressure regulating system, wherein the natural gas pressure regulating system comprises: the system comprises a first absorption tower, a second absorption tower, a drying and regenerating system, a pressure regulator and a heating mechanism; the first absorption tower and the second absorption tower are respectively connected with a natural gas inlet pipeline and a natural gas outlet pipeline; the first absorption tower and the second absorption tower are respectively connected with a drying and regenerating system; the natural gas outlet pipeline is connected with a pressure regulator which is connected with a heating mechanism. When natural gas is conveyed, if the water vapor content in the natural gas is high and the pressure drop of a pressure regulator is large, ice blockage occurs in a pipeline after the pressure of the natural gas is reduced; the method reduces the possibility of ice blockage of the natural gas by reducing the water vapor content in the natural gas, and further solves the problem of ice blockage of the natural gas after pressure reduction by fully heating the natural gas after pressure reduction; the invention not only can solve the problem of ice blockage of natural gas in the prior art, but also improves the drying and dehydration efficiency of the natural gas and the heating efficiency of the natural gas.
Description
Technical Field
The invention relates to the technical field of natural gas, in particular to a natural gas pressure regulating system.
Background
With the rapid development of natural gas pipeline construction in China in recent years, natural gas is more and more important in national production and life. However, the weather is cold in winter in northern areas, and the ice blockage phenomenon is easy to occur on natural gas pipelines and equipment. Taking a natural gas pipeline conveying station as an example, natural gas in the station is conveyed to downstream users after being depressurized by a pressure regulator. Generally, the temperature of natural gas is reduced by about 1 ℃ every time the conveying pressure of the natural gas is reduced by 0.2MPa, and if the water vapor content in the natural gas is higher, the natural gas in a natural gas pipeline is very easy to cause ice blockage after pressure reduction under the running condition in winter, so that the production running work can not be normally carried out, and the production and the life of downstream users can be directly influenced. Therefore, the problem of ice blockage of natural gas pipelines and equipment is very important to prevent and solve.
In the prior art, in order to remove moisture in natural gas, the natural gas may be dried and separated, and then sent into a gas pipeline. However, when the natural gas is dehydrated by adsorption using a single absorption tower, the dehydration process of the natural gas cannot be continuously performed. When the adsorption of the molecular sieve in the absorption tower is saturated, the molecular sieve absorption tower cannot continuously dry the natural gas, and at the moment, the production needs to be interrupted to regenerate the molecular sieve. In addition, the temperature of the natural gas during transportation is increased mainly by adding an electric heating device before pressure regulation. However, when the pressure drop of the pressure regulator is too large, the method cannot well solve the problem of icing of the natural gas after pressure reduction.
Disclosure of Invention
In view of this, the invention provides a natural gas pressure regulating system to solve the problem that ice blockage occurs in a pipeline after natural gas is depressurized if the water vapor content in the natural gas is high and the pressure drop of a pressure regulator is large when the natural gas is conveyed.
The invention provides a natural gas pressure regulating system, comprising: the system comprises a first absorption tower, a second absorption tower, a drying and regenerating system, a pressure regulator and a heating mechanism;
the first absorption tower and the second absorption tower are respectively connected with a natural gas inlet pipeline and a natural gas outlet pipeline;
the first absorption tower and the second absorption tower are respectively connected with the drying and regenerating system;
the natural gas outlet pipeline is connected with the pressure regulator, the pressure regulator is connected with the heating mechanism, the pressure regulator is used for regulating the pressure of the natural gas output by the natural gas outlet pipeline, and the heating mechanism is used for heating the natural gas;
when natural gas dehydration treatment is required, controlling the first absorption tower or the second absorption tower to be opened;
when the first absorption tower is opened, judging whether the time elapsed after the first absorption tower is opened is greater than or equal to a first preset time, if so, controlling the first absorption tower to be closed, controlling the second absorption tower to be opened, and controlling the drying and regenerating system to start to perform drying and regenerating treatment on the first absorption tower;
when the second absorption tower is opened, judging whether the time elapsed after the second absorption tower is opened is greater than or equal to a first preset time, if so, controlling the second absorption tower to be closed, simultaneously controlling the first absorption tower to be opened, and controlling the drying and regenerating system to start drying and regenerating treatment on the second absorption tower.
Preferably, the method further comprises the following steps: a control mechanism;
the control mechanism is respectively connected with the first absorption tower, the second absorption tower and the drying and regenerating system;
the control mechanism is used for controlling the opening or closing of the first absorption tower or the second absorption tower and controlling the drying and regenerating system to start drying and regenerating treatment on the first absorption tower or the second absorption tower.
Preferably, the control mechanism comprises: the controller, the first valve, the second valve, the third valve and the fourth valve;
the first absorption tower is connected with the natural gas inlet pipeline through the first valve, and the second absorption tower is connected with the natural gas inlet pipeline through the second valve;
the first absorption tower is connected with the natural gas outlet pipeline through the third valve, and the second absorption tower is connected with the natural gas outlet pipeline through the fourth valve;
the first valve, the second valve, the third valve and the fourth valve are respectively connected with the controller.
Preferably, the dry regeneration system comprises: a heater, a cooler, and a separator;
one end of the heater is connected with the regenerated gas through a safety control valve, and the other end of the heater is connected with the first absorption tower through a fifth valve;
the other end of the heater is connected with the second absorption tower through a sixth valve;
one end of the cooler is connected with the separator, and the other end of the cooler is connected with the first absorption tower through a seventh valve;
the other end of the cooler is connected with the second absorption tower through an eighth valve;
the fifth valve, the sixth valve, the seventh valve, the eighth valve, the heater, the safety control valve, the cooler and the separator are respectively connected with the control mechanism;
the cooler is used for cooling the regeneration gas, and the separator is used for separating water drops in the regeneration gas from the regeneration gas.
Preferably, the method further comprises the following steps: a dust filter;
the dust filter is arranged on the natural gas outlet pipeline and used for filtering dust in natural gas entering the natural gas outlet pipeline from the first absorption tower or the second absorption tower.
Preferably, the method further comprises the following steps: a water dew point detection mechanism;
the water dew point detection mechanism is connected with the natural gas outlet pipeline between the dust filter and the pressure regulator and used for detecting the water vapor content of the natural gas in the natural gas outlet pipeline.
Preferably, the water dew point detecting mechanism includes: the device comprises a sampling valve, a water dew point detector and an alarm;
the water dew point detector is connected with the natural gas outlet pipeline between the dust filter and the pressure regulator through a sampling valve;
the water dew point detector is connected with an alarm, and the alarm is used for giving an alarm when the water vapor content in the natural gas detected by the water dew point detector is greater than the preset water vapor content.
Preferably, the heating mechanism includes: the device comprises a confluence orifice plate, a pipe bundle, a heating pipeline, a water tank and a heating belt;
the two ends of the heating pipeline are respectively provided with the confluence hole plates;
the tube bundles are installed inside the heating pipeline, two ends of each tube bundle are respectively connected with the corresponding confluence hole plates at two ends of the heating pipeline, and an opening at the end part of each tube bundle is respectively communicated with the corresponding hole groove on the confluence hole plate;
the top of the water tank is connected with the side wall of the heating pipeline, and the interior of the water tank is communicated with the interior of the heating pipeline;
the heating belt is arranged in the water tank;
one end of the heating pipeline is connected with the pressure regulator through a pipeline.
Preferably, the inside of the first absorption tower and the inside of the second absorption tower are respectively provided with a 4A molecular sieve.
Preferably, the regeneration gas is a nitrogen purge gas.
The invention has the following beneficial effects:
the invention provides a natural gas pressure regulating system, which is characterized in that natural gas is dehydrated and dried through a first absorption tower or a second absorption tower, and a drying and regenerating system is arranged to regenerate the saturated first absorption tower or the saturated second absorption tower; the pressure of the conveyed natural gas is regulated by arranging a pressure regulator; the natural gas after pressure reduction is fully heated by arranging the heating mechanism; the invention can effectively prevent the ice blockage phenomenon of the natural gas in the pipeline for conveying the natural gas after depressurization in winter; the natural gas is dehydrated or the absorption tower is regenerated by switching the first absorption tower and the second absorption tower, so that the dehydration can be continuously carried out, the transportation operation is not required to be interrupted, and the continuity of dehydration and drying of the natural gas is ensured.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a natural gas pressure regulating system according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a hole collecting plate according to an embodiment of the present invention.
FIG. 3 is a schematic view of the structure of a tube bundle in an embodiment of the invention.
Fig. 4 is a schematic structural view of a heating pipe and a water tank in the embodiment of the present invention.
In the figure, 1-a first absorption tower, 2-a second absorption tower, 3-a first valve, 4-a second valve, 5-a third valve, 6-a fourth valve, 7-a fifth valve, 8-a sixth valve, 9-a seventh valve, 10-an eighth valve, 11-a natural gas inlet pipeline, 12-a natural gas outlet pipeline, 13-a dust filter, 14-a sampling valve, 15-a water dew point detector, 16-an alarm, 17-a pressure regulator, 18-a safety control valve, 19-a heater, 20-a cooler, 21-a separator, 22-a heating mechanism, 23-a confluence orifice plate, 24-a tube bundle, 25-a heating pipeline and 26-a water tank.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth. However, for parts not described in detail, the present invention can be fully understood by those skilled in the art.
Furthermore, those skilled in the art will appreciate that the drawings are provided solely for the purposes of illustrating the invention, features and advantages thereof, and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is meant by "including but not limited to".
Fig. 1 is a schematic structural diagram of a natural gas pressure regulating system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a structure of a hole plate according to an embodiment of the present invention. FIG. 3 is a schematic view of the structure of a tube bundle in an embodiment of the invention. Fig. 4 is a schematic structural view of a heating pipe and a water tank in the embodiment of the present invention. As shown in fig. 1, 2, 3 and 4, a natural gas pressure regulating system includes: a first absorption tower 1, a second absorption tower 2, a drying and regenerating system, a pressure regulator 17 and a heating mechanism 22; the first absorption tower 1 and the second absorption tower 2 are respectively connected with a natural gas inlet pipeline 11 and a natural gas outlet pipeline 12; the first absorption tower 1 and the second absorption tower 2 are respectively connected with a drying and regenerating system; the natural gas outlet pipeline 12 is connected with a pressure regulator 17, the pressure regulator 17 is connected with a heating mechanism 22, the pressure regulator 17 is used for regulating the pressure of the natural gas output by the natural gas outlet pipeline 12, and the heating mechanism 22 is used for heating the natural gas; when natural gas dehydration treatment is required, controlling the first absorption tower 1 or the second absorption tower 2 to be opened; when the first absorption tower 1 is opened, judging whether the time elapsed after the first absorption tower 1 is opened is greater than or equal to a first preset time, if so, controlling the first absorption tower 1 to be closed, simultaneously controlling the second absorption tower 2 to be opened, and controlling a drying and regenerating system to start to perform drying and regenerating treatment on the first absorption tower 1; when the second absorption tower 2 is opened, judging whether the time elapsed after the second absorption tower 2 is opened is greater than or equal to a first preset time, if so, controlling the second absorption tower 2 to be closed, simultaneously controlling the first absorption tower 1 to be opened, and controlling a drying and regenerating system to be started to carry out drying and regenerating treatment on the second absorption tower 2.
In the present invention, the inside of the first absorption tower 1 and the inside of the second absorption tower 2 each have a 4A molecular sieve.
In the embodiment of the invention, one end of a natural gas inlet pipeline 11 is respectively connected with the tops of a first absorption tower 1 and a second absorption tower 2, and the other end is connected with natural gas; one end of the natural gas outlet pipeline 12 is respectively connected with the bottoms of the first absorption tower 1 and the second absorption tower 2, the other end of the natural gas outlet pipeline is connected with one end of a pressure regulator 17, the other end of the pressure regulator 17 is connected with one end of a heating device, and the other end of the heating device is connected with a downstream user through a pipeline.
When natural gas is conveyed, the natural gas enters a natural gas inlet pipeline 11, the first absorption tower 1 or the second absorption tower 2 is opened, and if the first absorption tower 1 is opened, the natural gas enters the first absorption tower 1 from the natural gas inlet pipeline 11; the 4A molecular sieve in the first absorption tower 1 absorbs moisture in the natural gas entering the first absorption tower 1, and the moisture in the natural gas enters the natural gas outlet pipeline 12 through the bottom of the first absorption tower 1 after being removed; opening the pressure regulator 17, and regulating the pressure of the natural gas entering the pressure regulator 17 to be equal to the preset pressure when the natural gas is output; the natural gas enters the heating mechanism 22 after being regulated by the pressure regulator 17, the heating mechanism 22 is started, the heating value of the heating mechanism 22 is set to be the preset temperature, the natural gas entering the heating mechanism 22 is fully heated, and the heated natural gas reaches downstream users through a pipeline.
After the first absorption tower 1 is opened, the time for opening the first absorption tower 1 is timed, the time passing after the first absorption tower 1 is opened is judged, namely whether the timed time is greater than or equal to first preset time, if yes, the first absorption tower 1 is closed, and the second absorption tower 2 is opened at the same time, so that natural gas enters the second absorption tower 2 from the natural gas inlet pipeline 11, the 4A molecular sieve in the second absorption tower 2 absorbs moisture in the natural gas entering the interior of the second absorption tower, the natural gas with the moisture removed enters the natural gas outlet pipeline 12 from the bottom of the second absorption tower 2, and finally enters the heating mechanism 22 for heating after being regulated by the pressure regulator 17. The first preset time is the time for the 4A molecular sieves in the first absorption tower 1 and the second absorption tower 2 to reach saturation after absorbing natural gas, and is set according to the number of the 4A molecular sieves in the actual absorption towers. When the first absorption tower 1 is saturated, the first absorption tower 1 needs to be closed, the second absorption tower 2 is opened to continue the water removal treatment of the natural gas, and the natural gas is guaranteed not to be conveyed in an interrupted manner. And when the first absorption tower 1 is closed, starting a drying and regenerating system, and carrying out drying and regenerating treatment on the saturated first absorption tower 1 by the drying and regenerating system.
After the second absorption tower 2 is opened, timing the opening time of the second absorption tower 2, judging that the opening time of the second absorption tower 2 is greater than or equal to a first preset time, namely after the 4A molecular sieve in the second absorption tower 2 is saturated, controlling the second absorption tower 2 to be closed, and simultaneously controlling the first absorption tower 1 after drying and regeneration treatment to be opened to carry out water removal treatment on natural gas; and simultaneously, starting a drying and regenerating system to dry and regenerate the second absorption tower 2.
In the present invention, the method further comprises: a control mechanism; the control mechanism is respectively connected with the first absorption tower 1, the second absorption tower 2 and the drying and regenerating system; the control mechanism is used for controlling the opening or closing of the first absorption tower 1 or the second absorption tower 2 and controlling the drying and regenerating system to start drying and regenerating treatment on the first absorption tower 1 or the second absorption tower 2.
In the embodiment of the present invention, the control mechanism is further connected to the pressure regulator 17 and the heating mechanism 22, and the control mechanism is further configured to control the pressure regulator 17 to be turned on or off, and control the pressure value regulated by the pressure regulator 17 to be equal to the preset pressure; the control mechanism is also used for controlling the heating mechanism 22 to be started or shut down, and controlling the heating temperature of the heating mechanism 22 to be a preset temperature.
In the present invention, the control mechanism includes: a controller, a first valve 3, a second valve 4, a third valve 5 and a fourth valve 6; the first absorption tower 1 is connected with a natural gas inlet pipeline 11 through a first valve 3, and the second absorption tower 2 is connected with the natural gas inlet pipeline 11 through a second valve 4; the first absorption tower 1 is connected with a natural gas outlet pipeline 12 through a third valve 5, and the second absorption tower 2 is connected with the natural gas outlet pipeline 12 through a fourth valve 6; the first valve 3, the second valve 4, the third valve 5 and the fourth valve 6 are respectively connected with a controller.
In the embodiment of the invention, when the first absorption tower 1 needs to be controlled to be opened and the second absorption tower 2 needs to be controlled to be closed, the controller controls the first valve 3 and the third valve 5 to be opened, and controls the second valve 4 and the fourth valve 6 to be closed at the same time, natural gas enters the first absorption tower 1 from the natural gas inlet pipeline 11 through the first valve 3, and after water removal treatment, natural gas enters the natural gas outlet pipeline 12 from the bottom of the first absorption tower 1 through the third valve 5; when the second absorption tower 2 needs to be controlled to be opened and the first absorption tower 1 needs to be closed, the controller controls the first valve 3 and the third valve 5 to be closed, and simultaneously controls the second valve 4 and the fourth valve 6 to be opened, natural gas enters the second absorption tower 2 from the natural gas inlet pipeline 11 through the second valve 4, and after dehydration treatment, natural gas enters the natural gas outlet pipeline 12 from the bottom of the second absorption tower 2 through the fourth valve 6.
In the present invention, a dry regeneration system includes: a heater 19, a cooler 20, and a separator 21; one end of the heater 19 is connected with the regenerated gas through the safety control valve 18, and the other end of the heater is connected with the first absorption tower 1 through the fifth valve 7; the other end of the heater 19 is connected with the second absorption tower 2 through a sixth valve 8; one end of the cooler 20 is connected with the separator 21, and the other end is connected with the first absorption tower 1 through a seventh valve 9; the other end of the cooler 20 is connected with the second absorption tower 2 through an eighth valve 10; the fifth valve 7, the sixth valve 8, the seventh valve 9, the eighth valve 10, the heater 19, the safety control valve 18, the cooler 20 and the separator 21 are respectively connected with a control mechanism; the cooler 20 is for cooling the regeneration gas, and the separator 21 is for separating water droplets in the regeneration gas from the regeneration gas.
In the embodiment of the present invention, the regeneration gas is stored in a regeneration gas storage tank, and the safety control valve 18 is connected to the regeneration gas storage tank through a pipe. The heater 19 is connected with the bottom of the first absorption tower 1 through a fifth valve 7, and the top of the first absorption tower 1 is connected with the cooler 20 through a seventh valve 9; the heater 19 is connected with the bottom of the second absorption tower 2 through a sixth valve 8, and the top of the second absorption tower 2 is connected with the cooler 20 through an eighth valve 10; the controller is respectively connected with the heater 19, the fifth valve 7, the sixth valve 8, the seventh valve 9, the eighth valve 10, the cooler 20 and the separator 21;
when the drying and regeneration system is controlled to perform drying and regeneration on the first absorption tower 1, the controller controls the fifth valve 7 and the seventh valve 9 to be opened, controls the sixth valve 8 and the eighth valve 10 to be closed, and controls the safety control valve 18 to be opened at the same time, so that the regenerated gas enters the heater 19 through the safety control valve 18; the controller controls the heater 19 to start to heat the regenerated gas, the heated regenerated gas enters the first absorption tower 1 through the fifth valve 7 to heat the 4A molecular sieve in the first absorption tower 1, and the water in the regenerated gas is evaporated and desorbed from the 4A molecular sieve; the desorbed water vapor enters the cooler 20 along with the regeneration gas through the top of the first absorption tower 1 and the seventh valve 9, the controller controls the cooler 20 to start up to cool the regeneration gas entering the cooler, the water vapor in the regeneration gas is condensed into water drops and then enters the separator 21 along with the regeneration gas, the separator 21 separates the moisture in the regeneration gas, and the regeneration gas after moisture separation enters the regeneration gas storage tank through a pipeline for recycling.
When the drying and regeneration system is controlled to perform drying and regeneration on the second absorption tower 2, the controller controls the sixth valve 8 and the eighth valve 10 to be opened, controls the fifth valve 7 and the seventh valve 9 to be closed, and controls the safety control valve 18 to be opened at the same time, so that the regenerated gas enters the heater 19 through the safety control valve 18; the controller controls the heater 19 to start to heat the regenerated gas, the heated regenerated gas enters the second absorption tower 2 through the sixth valve 8, and the 4A molecular sieve in the second absorption tower 2 is heated, so that the water in the regenerated gas is evaporated and desorbed from the 4A molecular sieve; the desorbed water vapor enters the cooler 20 along with the regeneration gas through the top of the second absorption tower 2 and the eighth valve 10, the controller controls the cooler 20 to start up to cool the regeneration gas entering the cooler, the water vapor in the regeneration gas is condensed into water drops and then enters the separator 21 along with the regeneration gas, the separator 21 separates the moisture in the regeneration gas, and the regeneration gas after moisture separation enters the regeneration gas storage tank through a pipeline for recycling.
The cooler 20 may be a heat exchanger or other equipment capable of cooling water vapor into liquid water; the separator 21 may be a centrifugal separator 21 or the like that separates water droplets in the gas: the heater 19 may be an electric heater 19 or the like. The heater 19 can heat the molecular sieve in the absorption tower by heating the regenerated gas, so that the moisture in the molecular sieve is separated; the cooler 20 and the separator 21 can separate moisture from the regeneration gas, thereby enabling the regeneration gas to be recycled.
In the present invention, the method further comprises: a dust filter 13; the dust filter 13 is installed on the natural gas outlet pipe 12, and is used for filtering dust in the natural gas entering the natural gas outlet pipe 12 from the first absorption tower 1 or the second absorption tower 2.
In the embodiment of the invention, after the natural gas absorbs moisture through the first absorption tower 1 or the second absorption tower 2, fine dust in the molecular sieve in the first absorption tower 1 or the second absorption tower 2 may enter the natural gas outlet pipeline 12 along with the natural gas; a dust filter 13 is provided in the natural gas outlet pipe 12 to filter dust that may be present in the natural gas and prevent the dust from entering the downstream user pipes.
In the present invention, the method further comprises: a water dew point detection mechanism; the water dew point detection mechanism is connected with the natural gas outlet pipeline 12 between the dust filter 13 and the pressure regulator 17, and is used for detecting the water vapor content of the natural gas in the natural gas outlet pipeline 12.
In the embodiment of the invention, the water dew point detection mechanism is connected with the controller, when natural gas is conveyed, the controller controls the water dew point detection mechanism to be started, the natural gas in the natural gas outlet pipeline 12 is sampled and detected at preset intervals, whether the water vapor content of the natural gas in the detected sample is greater than or equal to the preset content is judged, if yes, the water dew point detection mechanism gives an alarm, and the detection result is sent to the controller. If the preset interval time is 5 minutes, the water dew point detection mechanism performs sampling detection once every 5 minutes. The water dew point detection mechanism can prevent the problem that the content of water vapor in the conveyed natural gas exceeds the standard.
In the present invention, the water dew point detecting mechanism includes: a sampling valve 14, a water dew point detector 15 and an alarm 16; the water dew point detector 15 is connected with a natural gas outlet pipeline 12 between a dust filter 13 and a pressure regulator 17 through a sampling valve 14; the water dew point detector 15 is connected with an alarm 16, and the alarm 16 is used for giving an alarm when the water dew point detector 15 detects that the water vapor content in the natural gas is larger than the preset water vapor content, and the alarm 16 gives an alarm.
In the embodiment of the invention, the sampling valve 14, the water dew point detector 15 and the alarm 16 are respectively connected with the controller. When sampling detection is carried out, the controller controls the sampling valve 14 to be opened, and after the sampling valve 14 is opened, natural gas in the natural gas outlet pipeline 12 enters the water dew point detector 15 through the sampling valve 14.
A sampling volume can be set in the controller, which can be controlled by the opening time of the sampling valve 14; if the opening time of the sampling valve 14 is set to be the second preset time, the controller controls the sampling valve 14 to be opened and time is counted every time sampling is carried out, and the controller controls the sampling valve 14 to be closed after the second preset time is judged after the sampling valve 14 is opened.
The controller controls the water dew point detector 15 to start, after the sampled natural gas enters the water dew point detector 15, the water dew point detector 15 detects the water vapor content in the sampled natural gas, the detection result is transmitted to the controller, the controller judges whether the water vapor content detection result is greater than the preset water vapor content, and if yes, the controller controls the alarm 16 to start to alarm.
In the present invention, the heating mechanism 22 includes: a confluence hole plate 23, a tube bundle 24, a heating pipeline 25, a water tank 26 and a heating belt; the two ends of the heating pipeline 25 are respectively provided with a confluence hole plate 23; the tube bundles 24 are installed inside the heating pipeline 25, two ends of the tube bundles 24 are respectively connected with the corresponding confluence pore plates 23 at two ends of the heating pipeline 25, and an opening at the end part of each tube bundle 24 is respectively communicated with the corresponding pore groove on the confluence pore plate 23; the top of the water tank 26 is connected with the side wall of the heating pipeline 25, and the interior of the water tank 26 is communicated with the interior of the heating pipeline 25; a heating belt is installed inside the water tank 26; one end of the heating pipeline 25 is connected with the pressure regulator 17 through a pipeline.
In the embodiment of the invention, the controller is connected with the heating belt, and the heating belt is connected with the power supply; the water tank 26 has water therein, and the water tank 26 is located below the heating duct 25. After natural gas is dried by the absorption tower and is subjected to pressure regulation by the pressure regulator 17, the natural gas enters the tube bundle 24 from a hole groove on the confluence hole plate 23 at one end of the heating pipeline 25; the controller controls the heating belt to start and switch on the power supply, the temperature of the heating belt rises to heat water in the water tank 26, the water in the water tank 26 is heated and evaporated to generate steam, the space in the heating pipeline 25 is filled with the steam, and the tube bundle 24 in the heating pipeline 25 is heated, so that the temperature of natural gas in the tube bundle 24 rises; the water vapor is condensed and then flows back to the water tank 26 again for heating circulation.
The natural gas after being dried and regulated in pressure is heated, so that the ice blockage phenomenon caused by too low temperature during conveying of the natural gas can be further prevented. By uniformly distributing the tube bundles 24 in the heating pipeline 25 and recycling the water vapor in the heating mechanism, the heating efficiency of the natural gas and the stability and reliability of the heating mechanism are improved.
In the present invention, the regeneration gas is a dirty nitrogen gas.
In the embodiment of the invention, when natural gas is conveyed, the natural gas is controlled to enter the natural gas inlet pipeline 11; selecting a first absorption tower 1 or a second absorption tower 2 to dry natural gas, and if the first absorption tower 1 is selected, controlling a first valve 3 and a third valve 5 to be opened and simultaneously controlling a second valve 4 and a fourth valve 6 to be closed by a controller; the natural gas enters the first absorption tower 1 through the first valve 3, and the 4A molecular sieve in the first absorption tower 1 absorbs moisture in the natural gas, so that the natural gas is dried; the dried natural gas enters a natural gas outlet pipeline 12 from the bottom of the first absorption tower 1 through a third valve 5; the natural gas entering the natural gas outlet pipeline 12 passes through the dust filter 13 on the natural gas outlet pipeline 12, and the dust filter 13 filters dust in the natural gas; the controller controls the pressure regulator 17 to be opened, the pressure of the natural gas output by the output end of the pressure regulator 17 is set to be a preset pressure, and the natural gas enters the tube bundle 24 through the confluence hole plate 23 after being regulated by the pressure regulator 17; the controller controls the heating belt to start heating the water in the water tank 26 to generate steam to fill the heating pipeline 25 to heat the natural gas in the tube bundle 24; the heated natural gas is transported to downstream users through pipelines. Similarly, if the second absorption tower 2 is selected, the controller controls the second valve 4 and the fourth valve 6 to be opened, and controls the third valve 5 and the first valve 3 to be closed simultaneously; the natural gas enters the second absorption tower 2 through the second valve 4, and the 4A molecular sieve in the second absorption tower 2 absorbs moisture in the natural gas, so that the natural gas is dried; and the dried natural gas enters a natural gas outlet pipeline 12 from the bottom of the second absorption tower 2 through a fourth valve 6. After the natural gas enters the natural gas outlet pipeline 12, the controller controls the sampling valve 14 to be opened according to the preset interval time to sample the natural gas filtered by the dust filter 13, the controller controls the water dew point detector 15 to start to detect the water vapor content in the sampled natural gas, and when the water vapor content exceeds the preset content, the controller controls the alarm 16 to start to alarm.
When the first absorption tower 1 is opened, namely the first valve 3 and the third valve 5 are opened, the controller times the opening time of the first valve 3 and the third valve 5, judges whether the time elapsed after the opening is greater than or equal to a first preset time, if so, controls to close the first valve 3 and the third valve 5, and simultaneously controls to open the second valve 4 and the fourth valve 6 to enable natural gas to enter the second absorption tower 2 for drying treatment; simultaneously starting a drying and regenerating system to dry and regenerate the saturated first absorption tower 1, wherein the specific process comprises the steps that the controller controls the fifth valve 7 and the seventh valve 9 to be opened, the sixth valve 8 and the eighth valve 10 to be closed, and simultaneously controls the safety control valve 18 to be opened to enable regenerated gas to enter the heater 19; the controller controls the heater 19 to start to heat the regenerated gas, the heated regenerated gas enters the first absorption tower 1 through the fifth valve 7, and water in the 4A molecular sieve in the first absorption tower 1 is heated and evaporated into steam, and then the steam enters the cooler 20 along with the regenerated gas through the seventh valve 9; the controller controls the cooler 20 to start to cool the regenerated gas, and the cooled water vapor is condensed into water drops which enter the separator 21 along with the regenerated gas for separation and then return to the regenerated gas storage tank for recycling. Similarly, when the second absorption tower 2 is opened, that is, the second valve 4 and the fourth valve 6 are opened, the controller times the time for opening the second valve 4 and the fourth valve 6, and determines whether the time elapsed after the opening is greater than or equal to a first predetermined time, if the time elapsed after the opening is greater than or equal to the first predetermined time, the controller closes the second valve 4 and the fourth valve 6, and simultaneously opens the first valve 3 and the third valve 5 to allow the natural gas to enter the first absorption tower 1 for drying treatment, and at this time, the first absorption tower 1 can continue to dry the natural gas after being treated by the drying and regenerating system; the controller controls the sixth valve 8 and the eighth valve 10 to be opened, the fifth valve 7 and the seventh valve 9 to be closed, the regenerated gas enters the heater 19 to be heated and then enters the second absorption tower 2 through the sixth valve 8, the moisture in the 4A molecular sieve in the second absorption tower 2 is heated and evaporated, the regenerated gas enters the cooler 20 through the eighth valve 10 to be cooled, and then enters the separator 21 to separate the moisture, and finally the regenerated gas returns to the regenerated gas storage tank to be recycled.
The invention adopts a double-tower natural gas dehydration regeneration process, which can realize the continuous and rapid production process of natural gas dehydration; compared with the traditional method for drying the natural gas by a single molecular sieve absorption tower, the method can continuously dehydrate the natural gas by double-tower circulation, further improves the drying and dehydrating efficiency of the natural gas, and reduces the possibility of natural gas freezing. The water dew point detection mechanism is used for monitoring the water vapor content in the dehydrated natural gas in real time, so that the natural gas water dew point index can be observed, monitored and timely adjusted within a set range, and the technical problem that the traditional natural gas dehydration system cannot monitor the water vapor content in the dehydrated natural gas in real time is solved. According to the invention, after the pressure of the pressure regulator 17 is regulated, the natural gas after pressure reduction is continuously and fully heated by the heating mechanism, so that the ice blockage problem of the natural gas after pressure reduction is avoided, the tube bundles 24 are uniformly distributed in the heating pipeline 25 in a circular ring shape, so that the natural gas after pressure reduction in the tube bundles 24 can be fully heated, the latent heat of evaporation generated after water in the water tank 26 in the heating device is evaporated can be well transferred to the tube bundles 24 of the natural gas, and the evaporated water vapor can be recycled in the device, so that the stability and reliability of the device are improved.
The above examples are merely embodiments showing the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, without departing from the concept of the present invention, it is possible for those skilled in the art to make various changes, substitutions of equivalents, improvements, and the like, which fall within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A natural gas pressure regulating system, comprising: the system comprises a first absorption tower (1), a second absorption tower (2), a drying and regenerating system, a pressure regulator (17) and a heating mechanism (22);
the first absorption tower (1) and the second absorption tower (2) are respectively connected with a natural gas inlet pipeline (11) and a natural gas outlet pipeline (12);
the first absorption tower (1) and the second absorption tower (2) are respectively connected with the drying and regenerating system;
the natural gas outlet pipeline (12) is connected with the pressure regulator (17), the pressure regulator (17) is connected with the heating mechanism (22), the pressure regulator (17) is used for regulating the pressure of the natural gas output by the natural gas outlet pipeline (12), and the heating mechanism (22) is used for heating the natural gas;
when natural gas dehydration treatment is required, controlling the first absorption tower (1) or the second absorption tower (2) to be opened;
when the first absorption tower (1) is opened, judging whether the time elapsed after the first absorption tower (1) is opened is greater than or equal to a first preset time, if so, controlling the first absorption tower (1) to be closed, controlling the second absorption tower (2) to be opened, and controlling the drying and regenerating system to be started to carry out drying and regenerating treatment on the first absorption tower (1);
when the second absorption tower (2) is opened, judging whether the time elapsed after the second absorption tower (2) is opened is greater than or equal to a first preset time, if so, controlling the second absorption tower (2) to be closed, controlling the first absorption tower (1) to be opened, and controlling the drying and regenerating system to start to perform drying and regenerating treatment on the second absorption tower (2).
2. The natural gas pressure regulating system of claim 1, further comprising: a control mechanism;
the control mechanism is respectively connected with the first absorption tower (1), the second absorption tower (2) and the drying and regenerating system;
the control mechanism is used for controlling the opening or closing of the first absorption tower (1) or the second absorption tower (2) and controlling the drying and regenerating system to start drying and regenerating treatment on the first absorption tower (1) or the second absorption tower (2).
3. The natural gas pressure regulating system of claim 2, wherein the control mechanism comprises: the device comprises a controller, a first valve (3), a second valve (4), a third valve (5) and a fourth valve (6);
the first absorption tower (1) is connected with the natural gas inlet pipeline (11) through the first valve (3), and the second absorption tower (2) is connected with the natural gas inlet pipeline (11) through the second valve (4);
the first absorption tower (1) is connected with the natural gas outlet pipeline (12) through the third valve (5), and the second absorption tower (2) is connected with the natural gas outlet pipeline (12) through the fourth valve (6);
the first valve (3), the second valve (4), the third valve (5) and the fourth valve (6) are respectively connected with the controller.
4. The natural gas pressure regulating system of claim 1, wherein the dry regeneration system comprises: a heater (19), a cooler (20), and a separator (21);
one end of the heater (19) is connected with regenerated gas through a safety control valve (18), and the other end of the heater is connected with the first absorption tower (1) through a fifth valve (7);
the other end of the heater (19) is connected with the second absorption tower (2) through a sixth valve (8);
one end of the cooler (20) is connected with the separator (21), and the other end of the cooler is connected with the first absorption tower (1) through a seventh valve (9);
the other end of the cooler (20) is connected with the second absorption tower (2) through an eighth valve (10);
the fifth valve (7), the sixth valve (8), the seventh valve (9), the eighth valve (10), the heater (19), the safety control valve (18), the cooler (20) and the separator (21) are respectively connected with the control mechanism;
the cooler (20) is used for cooling the regeneration gas, and the separator (21) is used for separating water drops in the regeneration gas from the regeneration gas.
5. The natural gas pressure regulating system of claim 1, further comprising: a dust filter (13);
the dust filter (13) is installed on the natural gas outlet pipeline (12) and is used for filtering dust in natural gas entering the natural gas outlet pipeline (12) from the first absorption tower (1) or the second absorption tower (2).
6. The natural gas pressure regulating system of claim 5, further comprising: a water dew point detection mechanism;
the water dew point detection mechanism is connected with the natural gas outlet pipeline (12) between the dust filter (13) and the pressure regulator (17) and used for detecting the water vapor content of the natural gas in the natural gas outlet pipeline (12).
7. The natural gas pressure regulating system of claim 6, wherein the water dew point detection mechanism comprises: a sampling valve (14), a water dew point detector (15) and an alarm (16);
the water dew point detector (15) is connected with the natural gas outlet pipeline (12) between the dust filter (13) and the pressure regulator (17) through a sampling valve (14);
the water dew point detector (15) is connected with an alarm (16), the alarm (16) is used for sending an alarm when the water vapor content in the natural gas detected by the water dew point detector (15) is greater than the preset water vapor content, and the alarm (16) sends out an alarm.
8. The natural gas pressure regulating system according to any one of claims 1 to 7, wherein the heating mechanism (22) comprises: a confluence orifice plate (23), a pipe bundle (24), a heating pipeline (25), a water tank (26) and a heating belt;
the two ends of the heating pipeline (25) are respectively provided with the confluence hole plate (23);
the tube bundles (24) are installed inside the heating pipeline (25), two ends of each tube bundle (24) are respectively connected with the corresponding confluence pore plate (23) at two ends of the heating pipeline (25), and an opening at the end part of each tube bundle (24) is respectively communicated with a pore groove on the corresponding confluence pore plate (23);
the top of the water tank (26) is connected with the side wall of the heating pipeline (25), and the interior of the water tank (26) is communicated with the interior of the heating pipeline (25);
the heating belt is arranged in the water tank (26);
one end of the heating pipeline (25) is connected with the pressure regulator (17) through a pipeline.
9. The natural gas pressure regulating system according to any one of claims 1 to 7, wherein:
the inside of the first absorption tower (1) and the inside of the second absorption tower (2) are respectively provided with a 4A molecular sieve.
10. The natural gas pressure regulating system of claim 4, wherein:
the regeneration gas is dirty nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555409.4A CN114791087A (en) | 2022-05-20 | 2022-05-20 | Natural gas pressure regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555409.4A CN114791087A (en) | 2022-05-20 | 2022-05-20 | Natural gas pressure regulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114791087A true CN114791087A (en) | 2022-07-26 |
Family
ID=82463721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210555409.4A Pending CN114791087A (en) | 2022-05-20 | 2022-05-20 | Natural gas pressure regulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114791087A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181667A (en) * | 1985-10-17 | 1987-04-29 | British Gas Corp | Treatment of gases |
| CN2864657Y (en) * | 2005-09-30 | 2007-01-31 | 北京东方诚益通科技开发中心 | Automatic sampling valve |
| CN203247242U (en) * | 2013-05-02 | 2013-10-23 | 中国海洋石油总公司 | Closed three-tower molecular sieve dehydration device |
| CN103940273A (en) * | 2014-05-07 | 2014-07-23 | 浙江大学 | Device and method for cooling partial high heat flow within limited space |
| US20140345320A1 (en) * | 2011-09-30 | 2014-11-27 | Xindi Energy Engineering Technology Co., Ltd. | Water removal and heavy-hydrocarbon removal process in liquefied natural gas production from mixed gas rich in methane |
| CN104745261A (en) * | 2015-04-10 | 2015-07-01 | 青岛捷能高新技术有限责任公司 | High-pressure molecular sieve circulating dehydration system and method |
| CN204490835U (en) * | 2015-03-27 | 2015-07-22 | 蒋泽 | A kind of skid Sweet natural gas TEG dehydration device |
| CN205209814U (en) * | 2015-12-10 | 2016-05-04 | 凌华 | An ore pulp sampling device |
| CN106281520A (en) * | 2015-05-15 | 2017-01-04 | 肇庆新奥燃气有限公司 | A kind of double-tower molecular sieve Gas Dehydration System |
| CN107353954A (en) * | 2016-05-10 | 2017-11-17 | 林德股份公司 | The method that water removal is gone from natural gas |
| CN207005548U (en) * | 2017-07-24 | 2018-02-13 | 浙江海洋大学 | A kind of natural gas line heater |
| CN214121682U (en) * | 2021-01-16 | 2021-09-03 | 中国烟草总公司郑州烟草研究院 | Rotary disc type self-flowing automatic quantitative powder sampling device |
| CN214584307U (en) * | 2021-09-14 | 2021-11-02 | 四川新生命干细胞科技股份有限公司 | High viscosity liquid quantitative sampling equipment |
| CN113670663A (en) * | 2021-09-09 | 2021-11-19 | 全椒海螺水泥有限责任公司 | Automatic sampling device for powder material conveying and warehousing and installation and debugging method thereof |
| CN114231327A (en) * | 2021-12-22 | 2022-03-25 | 新地能源工程技术有限公司 | Natural gas heating and regeneration integrated dehydration device and method |
-
2022
- 2022-05-20 CN CN202210555409.4A patent/CN114791087A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181667A (en) * | 1985-10-17 | 1987-04-29 | British Gas Corp | Treatment of gases |
| CN2864657Y (en) * | 2005-09-30 | 2007-01-31 | 北京东方诚益通科技开发中心 | Automatic sampling valve |
| US20140345320A1 (en) * | 2011-09-30 | 2014-11-27 | Xindi Energy Engineering Technology Co., Ltd. | Water removal and heavy-hydrocarbon removal process in liquefied natural gas production from mixed gas rich in methane |
| CN203247242U (en) * | 2013-05-02 | 2013-10-23 | 中国海洋石油总公司 | Closed three-tower molecular sieve dehydration device |
| CN103940273A (en) * | 2014-05-07 | 2014-07-23 | 浙江大学 | Device and method for cooling partial high heat flow within limited space |
| CN204490835U (en) * | 2015-03-27 | 2015-07-22 | 蒋泽 | A kind of skid Sweet natural gas TEG dehydration device |
| CN104745261A (en) * | 2015-04-10 | 2015-07-01 | 青岛捷能高新技术有限责任公司 | High-pressure molecular sieve circulating dehydration system and method |
| CN106281520A (en) * | 2015-05-15 | 2017-01-04 | 肇庆新奥燃气有限公司 | A kind of double-tower molecular sieve Gas Dehydration System |
| CN205209814U (en) * | 2015-12-10 | 2016-05-04 | 凌华 | An ore pulp sampling device |
| CN107353954A (en) * | 2016-05-10 | 2017-11-17 | 林德股份公司 | The method that water removal is gone from natural gas |
| CN207005548U (en) * | 2017-07-24 | 2018-02-13 | 浙江海洋大学 | A kind of natural gas line heater |
| CN214121682U (en) * | 2021-01-16 | 2021-09-03 | 中国烟草总公司郑州烟草研究院 | Rotary disc type self-flowing automatic quantitative powder sampling device |
| CN113670663A (en) * | 2021-09-09 | 2021-11-19 | 全椒海螺水泥有限责任公司 | Automatic sampling device for powder material conveying and warehousing and installation and debugging method thereof |
| CN214584307U (en) * | 2021-09-14 | 2021-11-02 | 四川新生命干细胞科技股份有限公司 | High viscosity liquid quantitative sampling equipment |
| CN114231327A (en) * | 2021-12-22 | 2022-03-25 | 新地能源工程技术有限公司 | Natural gas heating and regeneration integrated dehydration device and method |
Non-Patent Citations (3)
| Title |
|---|
| 姚晔: "《能源转换与管理技术》", 31 January 2018, 上海交通大学出版社 * |
| 张启富等, 冶金工业出版社 * |
| 管延文: "《城市天然气工程（第二版）》", 31 December 2018, 华中科技大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5746807A (en) | Gas handling system and adsorbent dryer regeneration apparatus | |
| JP4671772B2 (en) | Apparatus and method for treating and recovering gaseous hydrocarbons | |
| US6221130B1 (en) | Method of compressing and drying a gas and apparatus for use therein | |
| US3531916A (en) | Gas dehydration | |
| CN105682776B (en) | Compression heat dryer system | |
| US20130145779A1 (en) | Absorption type air drying system and method of performing heating regeneration of the same | |
| KR100793980B1 (en) | Absorption type air drying system for both purge process and non-purge process of using compression heat | |
| JP2011072996A (en) | Apparatus and method for treatment/recovery of gaseous hydrocarbon | |
| CN114791087A (en) | Natural gas pressure regulating system | |
| RU2637242C1 (en) | Method for regeneration of drying process adsorbent and purification of hydrocarbon gas (versions) and system for its implementation | |
| CN208642257U (en) | A kind of efficient recuperation of heat combination drying machine | |
| CN105944517B (en) | A kind of zero gas consumption residual heat regenerating compressed air drying system | |
| US2739664A (en) | Methods of and means for dehydrating and processing streams | |
| CN207524981U (en) | A kind of industrial nitrogen cleaning system processed | |
| CN108079736B (en) | Flash evaporation gas purification and recovery system | |
| CN105964113B (en) | A kind of zero gas consumption compressed air drier by afterheat regeneration | |
| CN204251574U (en) | Molecular sieve dehydration device | |
| CN206526644U (en) | A kind of unstripped gas multitower adsorption cleaning system | |
| RU2669269C2 (en) | Method for regenerating the adsorbent of dehydration of natural gases | |
| CN220194452U (en) | Acetylene drying device | |
| CN220696311U (en) | Molecular sieve dewatering device | |
| CN214075855U (en) | Adsorption type compressed gas continuous drying device | |
| CN217459352U (en) | Natural gas dewaxing and dewatering device | |
| CN214400395U (en) | Natural gas dehydration and dealkylation integrated device | |
| RU2784867C1 (en) | Hydrocarbon gas treatment plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220726 |
|
| RJ01 | Rejection of invention patent application after publication |