CN206435011U - The device that the low-resistance being dehydrated for fuel gas with low heat value is continuously run - Google Patents
The device that the low-resistance being dehydrated for fuel gas with low heat value is continuously run Download PDFInfo
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- CN206435011U CN206435011U CN201621302358.0U CN201621302358U CN206435011U CN 206435011 U CN206435011 U CN 206435011U CN 201621302358 U CN201621302358 U CN 201621302358U CN 206435011 U CN206435011 U CN 206435011U
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- China
- Prior art keywords
- filter tower
- drop filter
- low
- membrane module
- water pump
- Prior art date
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Links
- 239000002737 fuel gas Substances 0.000 title claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 23
- 230000008676 import Effects 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 238000007791 dehumidification Methods 0.000 description 23
- 239000007788 liquid Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 238000001179 sorption measurement Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 206010021036 Hyponatraemia Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model is a kind of continuous running gear of low-resistance being dehydrated for fuel gas with low heat value, including drips filter tower, heat exchanger, membrane module, film auxiliary equipment and water pump；The drop filter tower bottom is provided with import containing humid gas, provided with dry gas outlet at the top of the drop filter tower, the water pump, membrane module and heat exchanger are sequentially connected, and the water pump is also connected with drop filter tower bottom, the heat exchanger is not connected with drop filter tower, and the membrane module is also connected with auxiliary group of equipment of film；Drip filter tower and use double air vent pattern, and equipped with pneumatically or electrically valve transfer whole system is more stablized, the problem of tower body leakage will not occur because of single outlet pattern also greatly improves the stability of whole system；Using film regenerative system, energy loss can be greatly reduced, the compound of system is reduced, and reduce occupation of land and equipment investment.
Description
Technical field
The utility model is a kind of continuous running gear of low-resistance being dehydrated for fuel gas with low heat value.
Background technology
Liquefied natural gas (LNG) form all has fairly obvious superiority in terms of the storage and transport of natural gas.My god
Right gas liquefaction or LNG store, transport and often cause obstruction pipeline, influence tight gas supply containing dilutional hyponatremia using process, with CO2
Sour post-etching pipeline and equipment are formed with H2S, unnecessary power consumption is caused, causes the frozen block of equipment, therefore natural gas liquefaction
Deep dehydration must be carried out to natural gas before.Molecular sieve dehydration method is the major way of gas deep dehydration.But for molecule
Sieve dewatering process equipment has that high energy consumption, regeneration effect are poor, equipment investment is big, the low problem of liquefied fraction.
Utility model content
For above-mentioned deficiency of the prior art, a kind of simple in construction, energy consumption of the utility model offer is low, and equipment investment is low
Be used for fuel gas with low heat value be dehydrated the continuous running gear of low-resistance.
To realize above technical purpose, the technical solution of the utility model is:It is a kind of to be used for the low of fuel gas with low heat value dehydration
Hinder continuous running gear, including drop filter tower, heat exchanger, membrane module, film auxiliary equipment and water pump；The drop filter tower bottom, which is provided with, to be contained
Provided with dry gas outlet at the top of humid gas import, the drop filter tower, the water pump, membrane module and heat exchanger are sequentially connected, institute
State water pump also connect with drop filter tower bottom, the heat exchanger is connected with dripping filter tower top, the membrane module also with film auxiliary equipment
Connection.
Preferably, the drop filter tower includes drop filter tower body, shower and packing layer, the shower is located at drop filter tower
The top of body, described filler layer is located in drop filter tower body.
From the above, it can be seen that the utility model possesses advantages below：Film auxiliary equipment in the utility model and
The filtration system that membrane module is constituted, removes the impurity of influence membrane module operation in stoste (dehumidification solution rich solution)；Utilize and remove simultaneously
The wet effective Adsorption Time Period of solution, regular switching system membrane module is cleaned, and improves the service life of membrane module；Membrane module
Amount control system is handled, by adjusting related valve, the disposal ability of controllable membrane module, and then the effect of regulating gas dehydration
Really, the utility model contacts the liquid in generation bubble, gas with gas by using highly concentrated solution can pass through bubble surface
The principle in high concentration liquid is dissolved into, so as to be dehydrated and ensured by the configuration of membrane module and film auxiliary equipment to combustion gas
Whole system can continuously be run, and the liquid that all the time can have high concentration carries out dehydrating operations to combustion gas.
Brief description of the drawings
Fig. 1 is used for the structure chart for the continuous running gear of low-resistance that fuel gas with low heat value is dehydrated to be of the present utility model；
Fig. 2 is used for the structure for dripping filter tower for the continuous running gear of low-resistance that fuel gas with low heat value is dehydrated to be of the present utility model
Figure.
Brief description of the drawings：1st, filter tower is dripped, 11, import containing humid gas, 12, dry gas outlet, 13, drop filter tower body, 14, spray
Shower pipe, 15, packing layer, 2, heat exchanger, 3, membrane module, 4, film auxiliary equipment, 5, water pump.
Embodiment
As illustrated, a kind of continuous running gear of low-resistance being dehydrated for fuel gas with low heat value, including drop filter tower 1, heat exchanger
2nd, membrane module 3, film auxiliary equipment 4 and water pump 5；Drop filter tower 1 bottom is provided with import containing humid gas 11, and the drop filter tower 1 is pushed up
Portion is provided with dry gas outlet 12, and the water pump 5, membrane module 3 and heat exchanger 2 are sequentially connected, and the water pump 5 is also with dripping filter tower 1
Bottom is connected, and the heat exchanger 2 is connected with drop filter tower 1 top, and the membrane module 3 is also connected with film auxiliary equipment 4；The drop filter
Tower 1 includes drop filter tower body 13, shower 14 and packing layer 15, and the shower 14 is located at the top of drop filter tower body 13, institute
Packing layer 15 is stated to be located in drop filter tower body 13.
Drip and water-locator is set at the top of filter tower, inside sets one or more layers filled insulation, and dehumidification solution lean solution is through water-locator
Uniform cloth liquid is carried out for inner-tower filling material.Dehumidification solution forms liquid film on filler, so as to increase the contact area of gas and liquid.
When wet fuel gas with low heat value is contacted with dehumidification solution, using under certain temperature and concentration, the surface steam partial pressure of two media
Power is different, reaches the purpose for the part vapor sloughed in fuel gas with low heat value, concrete principle is described below.
At appropriate temperature and concentration, dehumidification solution surface saturated vapour pressure is set to be less than in processed fuel gas with low heat value
Steam partial pressure, vapor will be transmitted from fuel gas with low heat value to dehumidification solution, and the humidity of fuel gas with low heat value declines, and completes one
Dehumidification process.
Dehumidification process is complicated heat and mass transfer process coupling, and the motive force of heat transfer is fuel gas with low heat value and dehumidification solution
Temperature difference, and the motive force of mass transfer is the partial pressure of vapor in fuel gas with low heat value and the difference of solution surface Saturated water vapor pressure.Remove
During wet, because steam partial pressure is more than the Saturated water vapor pressure of solution surface in fuel gas with low heat value, water is by fuel gas with low heat value
Transmitted to solution, realize dehumidification process.Dehumidification process is divided into three steps：
(1) vapor is by fuel gas with low heat value main diffusion to gas liquid film gas phase side；
(2) vapor condenses on gas liquid film, into liquid phase；
(3) during water is diffused into solution from boundary liquid phase side.
In the two time of contact long enough, dehumidification solution and processing fuel gas with low heat value reach and balanced each other that be processed low heat value
The steam partial pressure of combustion gas will be equal with dehumidification solution steam partial pressure, and solution and fuel gas with low heat value temperature are also identical.Actually remove
, always there is certain pressure differential and the temperature difference between fuel gas with low heat value and dehumidification solution in wet process, it is impossible to reach and balance each other.Low-heat
The pressure differential of steam partial pressure and solution surface water vapor pressure is exactly mass transfer force in value combustion gas, and the mass transfer of dehumidification process is averaged
Pressure difference can be formulated (range of integration 0 and h represent drop filter tower entrance and exit height)：
The big gas of water capacity enters drop filter tower, and drop filter tower is provided with adsorption liquid inlet and outlet, and adsorption liquid is by inhaling
Attached liquid inlet enters, and is fully contacted with containing humid gas, absorbs the vapor in gas.Then adsorption liquid is by adsorption liquid discharge outlet
By water pump man also after, into membrane module discharge adsorption liquid in vapor, most afterwards through cooling heat exchanger go back on one's word drop filter tower after
It is continuous to be dehumidified, while membrane module is furnished with auxiliary equipment, due to the vapor discharged in discharge membrane module.
In formula：PV is processed the steam partial pressure of wet fuel gas with low heat value, Pa；
The steam partial pressure on Ps dehumidification solution lean solutions surface, Pa；
H is effectively drop filter tower height.
Membrane module
The work of membrane module is the regeneration for completing dehumidification solution, using a kind of characteristic of reverse osmosis membrane, in certain pressure
In the case of, a part of aqueous water in dehumidification solution rich solution is separated, so as to improve the purpose of dehumidification solution concentration, specifically
Principle it is as follows：
This reverse osmosis module is the solvent (herein referring to water) in solution is separated by counter-infiltration with enough pressure
Out.According to the different osmotic of various materials, it is possible to using more than osmotic pressure hyperfiltration, reach separated, it is dense
The purpose of contracting.Counter-infiltration main object is to separate the ion range in solution, different according to ion particle size, makes small particle
Ion is separated by membrane module.Wound element (film body) is, according to principle of reverse osmosis, pellicle, guide layer, grid to be pressed
Certain arrangement is viscous and element is formed on the central tube for send hole having.Raw water (i.e. dehumidification solution rich solution) is entered to accord with regular rules from element one end
Stratum reticulare, when by grid, under ambient pressure effect, a part of water is penetrated into guide layer by the hole of pellicle, suitable
The water channel of guide layer flows to the round of central tube, is discharged through central tube.Remainder (be referred to as concentrated water, i.e. dehumidification solution lean solution) from
The grid other end is discharged.
Relevant disposal ability formula：
Concentrating capacity：
R=(cf-cp) ÷ cf × 100%
Water-scavenging capability：
Y=QP ÷ (QP+QM)
In formula：Cf-feedwater conductivity (US/CM)
Cp-production water conductivity (US/CM)
QP--- fresh-water flows (CM3/H)
QM-concentrated water flow (CM3/H)
Film accessory part
To ensure the operation steady in a long-term of membrane module, there is provided film accessory part, major function：
1st, filtration system, removes the impurity of influence membrane module operation in stoste (dehumidification solution rich solution)；
2nd, membrane module purging system, using the effective Adsorption Time Period of dehumidification solution, regular switching system membrane module is carried out
Cleaning, improves the service life of membrane module；
3rd, membrane module processing amount control system, by adjusting related valve, the disposal ability of controllable membrane module.
The utility model and embodiments thereof are described above, the description does not have restricted, shown in accompanying drawing
Also it is one of embodiment of the present utility model, actual structure is not limited thereto.If all in all this area is general
Logical technical staff is enlightened by it, in the case where not departing from the utility model creation objective, being designed without creative with being somebody's turn to do
The similar frame mode of technical scheme and embodiment, all should belong to protection domain of the present utility model.
Claims (2)
1. a kind of continuous running gear of low-resistance being dehydrated for fuel gas with low heat value, it is characterised in that：Including drop filter tower (1), heat exchange
Device (2), membrane module (3), film auxiliary equipment (4) and water pump (5)；Described drop filter tower (1) bottom is provided with import containing humid gas (11),
Provided with dry gas outlet (12) at the top of the drop filter tower (1), the water pump (5), membrane module (3) and heat exchanger (2) connect successively
Connect, the water pump (5) also connects with drop filter tower (1) bottom, and the heat exchanger (2) connects with drop filter tower (1) top, the film group
Part (3) is also connected with film auxiliary equipment (4).
2. the low-resistance continuous running gear according to claim 1 being dehydrated for fuel gas with low heat value, it is characterised in that：It is described
Dripping filter tower (1) includes drop filter tower body (13), shower (14) and packing layer (15), and the shower (14) is located at drop filter tower sheet
The top of body (13), described filler layer (15) is located in drop filter tower body (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621302358.0U CN206435011U (en) | 2016-11-30 | 2016-11-30 | The device that the low-resistance being dehydrated for fuel gas with low heat value is continuously run |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621302358.0U CN206435011U (en) | 2016-11-30 | 2016-11-30 | The device that the low-resistance being dehydrated for fuel gas with low heat value is continuously run |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206435011U true CN206435011U (en) | 2017-08-25 |
Family
ID=59647750
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621302358.0U Expired - Fee Related CN206435011U (en) | 2016-11-30 | 2016-11-30 | The device that the low-resistance being dehydrated for fuel gas with low heat value is continuously run |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206435011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422685A (en) * | 2016-11-30 | 2017-02-22 | 无锡格林嘉科技有限公司 | Low-resistance continuous operation device for low calorific value gas dehydration |
-
2016
- 2016-11-30 CN CN201621302358.0U patent/CN206435011U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422685A (en) * | 2016-11-30 | 2017-02-22 | 无锡格林嘉科技有限公司 | Low-resistance continuous operation device for low calorific value gas dehydration |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 |