CN1679997A - Structure of active carbon fibrous adsorptive bed with static charge reinforcing control - Google Patents
Structure of active carbon fibrous adsorptive bed with static charge reinforcing control Download PDFInfo
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- CN1679997A CN1679997A CN 200410030841 CN200410030841A CN1679997A CN 1679997 A CN1679997 A CN 1679997A CN 200410030841 CN200410030841 CN 200410030841 CN 200410030841 A CN200410030841 A CN 200410030841A CN 1679997 A CN1679997 A CN 1679997A
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- carbon fiber
- activated carbon
- static
- core body
- adsorption
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- 230000003068 static effect Effects 0.000 title claims description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract description 8
- 229910052799 carbon Inorganic materials 0.000 title description 2
- 230000000274 adsorptive effect Effects 0.000 title 1
- 230000003014 reinforcing effect Effects 0.000 title 1
- 239000004744 fabric Substances 0.000 claims abstract description 39
- 238000001179 sorption measurement Methods 0.000 claims abstract description 39
- 238000003795 desorption Methods 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 58
- 239000003463 adsorbent Substances 0.000 claims description 37
- 239000000919 ceramic Substances 0.000 claims description 14
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 13
- 239000004411 aluminium Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 239000004917 carbon fiber Substances 0.000 claims description 13
- 238000007084 catalytic combustion reaction Methods 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 5
- 208000002925 dental caries Diseases 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methyl alcohol Substances OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 25
- 238000000034 method Methods 0.000 description 11
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 5
- 240000002853 Nelumbo nucifera Species 0.000 description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012900 molecular simulation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
A high-power-density activated carbon fibre adsorption bed controlled and intensified by electrostatic charges and used for the solid-adsorptive refrigerating system is composed of an adsorption core, a casing and a closure head. Said core has the electrostatic input for the controllable charging and discharging of electrostatic charges. When said adsorption bed is in adsorption state, the positive charges are charged onto the activated carbon fibre cloth for intensifying adsorption effect. When it is in desorption state, said positive charges are discharged for lowering the desorption temp.
Description
Technical field
The present invention relates to a kind of high power density adsorbent bed of strengthening by input and release electrostatic lotus realization control, be meant the efficient adsorbent bed that is used for the solid adsorption refrigeration system especially.
Background technology
Adsorbent bed in the solid adsorption refrigeration system is with periodically heating/type of cooling operation.The heat and mass speed of refrigerant vapour in the adsorbent micropore has determined the specific power output of refrigeration system.Conventional active carbon particle adsorbent bed has influenced its practicality owing to heat transmission resistance causes a body power density low, bulky greatly.The micropore of activated carbon fiber (ACF) is distributed in fiber surface, even aperture distribution, and the rate of adsorption is fast, and adsorption capacity is big, is a kind of good solid absorbent.For overcoming the low defective of bulk density, activated carbon fiber is woven into cloth, push or wrap tightly formation adsorbent thin layer on heat transfer wall again.This laminate structure has reduced the adsorbent bed thermal resistance significantly, but because the clearance control of fibre bundle mass transfer rate, therefore, resistance to mass tranfer will rise to the principal element that influences the rate of adsorption.
Molecular simulation to activated carbon fiber-methyl alcohol adsorption process shows, because methanol molecules has permanent dipole moment, itself has electric conductivity activated carbon fiber, and electrostatic charge is added on the activated carbon fiber surface can significantly increase adsorption capacity, quickens the speed that methanol molecules is assembled to the micropore wall; And after absorption reaches balance, dischargeing electrostatic charge again, unbalance the helping of poised state, obtain desorption effect preferably under low desorption temperature.
Summary of the invention
The object of the present invention is to provide a kind of adsorbent bed structure and operation method of implementing activated carbon fiber cloth interpolation and release electrostatic lotus, it can significantly improve the adsorption capacity and the rate of adsorption of activated carbon fiber cloth, reduce desorption temperature, thereby improve the adsorbent bed power density, reduce a body volume, reduce cost, improve the entire system performance.
For achieving the above object, technical solution of the present invention provides the carbon fiber adsorption and catalytic combustion bed structure that a kind of electrostatic charge control is strengthened, and its core body has the static input, can carry out the controlled electrostatic charge that charges and discharge to the adsorbent bed core body; When adsorbent bed was in adsorbed state, the static input linked to each other with dc power anode, and activated carbon fiber cloth charges into positive charge in bed, made the stack of the static field of force and micropore wall absorption potential, to strengthen adsorption effect; And when adsorbent bed is in detachment status, the static input is linked to each other with the direct-current power supply earthing end, and dischargeing positive charge, the balance field of force unbalance helps reducing desorption temperature.
Described carbon fiber adsorption and catalytic combustion bed structure between its adsorbent bed core body and housing and the end socket, is isolated to realize the static insulation by polytetrafluoroethylene (PTFE) or fluorubber insulative material.
Described carbon fiber adsorption and catalytic combustion bed structure, its described static input links to each other with earth terminal with dc power anode respectively by control circuit; The action of control circuit is synchronous with the vacuum barrier valve that is connected adsorbent bed and evaporimeter; Vapour pressure is lower than evaporator evaporation pressure in bed, and when the vacuum barrier valve was opened, the static input linked to each other with dc power anode by control circuit, adsorbs to strengthen to activated carbon fiber cloth input positive charge; Reach capacity when activated carbon fiber cloth adsorbs, when the vacuum barrier valve of connection adsorbent bed and evaporimeter cut out, the static input linked to each other with the earth terminal of dc source by control circuit, discharges positive charge, is beneficial to reduce desorption temperature.
Described carbon fiber adsorption and catalytic combustion bed structure, its core body is made up of core body end plate, metal U-shaped pipe, static input, aluminium fin; Core body end plate one side is provided with the static input, and lower surface has static insulated enclosure circle, links to each other with housing by static insulated enclosure circle; Metal U-shaped pipe upper end is affixed with the core body end plate; Metal U-shaped pipe two upper ends connect core body end plate, static insulation board and end socket base plate, communicate with two cavitys of end socket respectively; Aluminium fin level evenly distributes, and is fixed on the metal U-shaped pipe; The upper and lower surface of each aluminium fin is all adhered to activated carbon fiber cloth, constitutes an absorbing unit, separates with porous ceramics between the absorbing unit.
Described carbon fiber adsorption and catalytic combustion bed structure, its described aluminium fin and activated carbon fiber cloth and the assembling of porous ceramics entire pressurisation when improving the activated carbon fiber cloth bulk density, do not influence the refrigerant vapour passage; The thickness of activated carbon fiber cloth is at 1 ~ 3mm, and the average pore size of used porous ceramics is at 0.5～3mm, and thickness is at 3～5mm.
Described carbon fiber adsorption and catalytic combustion bed structure, its described metal U-shaped pipe is a plurality of; Average pore size 〉=the 2nm of activated carbon fiber cloth.
Implementing technical scheme conclusion of the present invention comprises: 1, and in the adsorbent bed structure that the present invention proposes, core body and housing are realized electrostatic isolation by insulative material; 2, the average pore size of selected activated carbon fiber is answered 〉=2nm in the adsorbent bed; 3, activated carbon fiber cloth, porous ceramics and aluminium fin entire pressurisation are assembled, and both can improve the loading density of activated carbon fiber cloth, provide refrigerant vapour to enter the circulation passage of activated carbon fiber cloth again; 4, the adsorbent bed core body is provided with the static input end interface, and interface is connected with earth terminal with dc power anode respectively by 2 switches of static insulation; 5, the action of 2 switches of static insulation by control system according to temperature and pressure signal controlling in the adsorbent bed; 6, the adsorbent bed housing has condenser function (is that 01140436 patent of invention is identical with application number) concurrently.
Adopt technical scheme of the present invention can reach following purpose and effect:
1. absorption phase: activated carbon fiber cloth in the bed is added positive charge by the static input, because electrostatic force is a kind of long range force, the static field of force has enlarged the sphere of action of wall absorption potential, quickened the migration of methanol molecules, thereby reached the purpose that significantly improves the adsorption capacity and the rate of adsorption to adsorption potential;
2. desorption stage: after reaching adsorption equilibrium, by the static input is connected with earth terminal, discharge the core body positive charge, the result that poised state is unbalance has strengthened the tendency of methanol molecules disengaging micropore wall, simultaneously, since micropore size big (〉=2nm) wall absorption potential relatively a little less than, cause being issued to desorption effect preferably at lower desorption temperature;
3. for a kind of solid absorbent, wall absorption potential is uncontrollable.Average pore size is more little, and absorption potential is just stronger, and adsorbance is bigger, but desorption temperature is also high; Otherwise average pore size is big more, absorption potential a little less than, desorption temperature is just on the low side, but adsorbance is also little.And the input of electrostatic force and release are controlled, by artificial input and release electrostatic lotus, can reduce desorption temperature when improving adsorbance, thereby increase substantially sorption cycle efficient, reach the purpose of efficiently utilizing the low grade residual heat resource;
4. the adsorbent bed housing has condenser function concurrently, and this point and application number are that 01140436 patent of invention is described identical, thereby it is powerful to have kept the described institute of this patent.
Description of drawings
Fig. 1 is the electric insulation schematic diagram of adsorbent bed core body and housing.
Fig. 2 is the structural representation of adsorbent bed core body.
The specific embodiment
For further describing architectural feature of the present invention and function, as follows below in conjunction with description of drawings:
See also Fig. 1, attachment 8 has constituted adsorbent bed core body 1 on core body end plate 4, metal U-shaped pipe 5, static input 6, aluminium fin 7 and the fin, core body 1 can only be undertaken by static input 6 core body 1 input or release electrostatic lotus by polytetrafluoroethylene (PTFE) or fluorubber material and housing 2 and the insulation of end socket 3 static.Polytetrafluoroethylene (PTFE) or fluorubber material comprise static insulated enclosure circle 9 and static insulation board 10, and static insulated enclosure circle 9 places between housing 2 and the core body end plate 4, are positioned at core body end plate 4 lower surfaces, and be affixed with housing 2 uncovered peripheries.Static insulation board 10 places between core body end plate 4 upper surfaces and end socket 3 bottom surfaces, seals affixed.
Fig. 2 is the structural representation of adsorbent bed core body 1.Adsorbent bed core body 1 is made of attachment 8 on core body end plate 4, metal U-shaped pipe 5, static input 6, aluminium fin 7 and the fin.Core body end plate 4 one sides are provided with static input 6; Metal U-shaped pipe 5 upper ends and core body end plate 4 are affixed.5 liang of upper ends of metal U-shaped pipe connect core body end plate 4, static insulation board 10 and end socket 3 base plates, communicate with two cavitys of end socket 3 respectively, see also Fig. 1.Aluminium fin 7 levels evenly distribute, and are fixed on the metal U-shaped pipe 5.Attachment 8 comprises activated carbon fiber cloth 81 on the fin, and isolated material porous ceramics 82.The upper and lower surface of each aluminium fin 7 all directly compresses adheres to activated carbon fiber cloth 81, constitutes an absorbing unit, separates with porous ceramics 82 between the absorbing unit.Porous ceramics 82 apertures enter the passage of activated carbon fiber on the one hand as refrigerant vapour between 1～3mm, on the other hand, by the entire pressurisation assembling, the specific volume of compression activated carbon fiber cloth 81 improves its bulk density, reduces thermal resistance.
Metal U-shaped pipe 5 also can be a plurality of.The average pore size of activated carbon fiber cloth 81 is answered 〉=2nm.
The present invention is to be on the basis of 01140436 patent of invention at application number, further proposes following two brand-new characteristics:
1, the adsorbent bed core body has designed static input and static insulation system, can be by the static input to activated carbon fiber input or release electrostatic lotus, make the reinforcement of absorption/desorption process have controllability, reach and both strengthen adsorption process, reduce desorption temperature again, significantly improved sorption cycle efficient;
2, adopt activated carbon fiber cloth as solid absorbent, activated carbon fiber cloth passes through and the porous ceramics overall package, directly is pressed on the thermofin, need not to add binding agent, has at utmost kept the raw-material absorption property of activated carbon fiber.Porous ceramics provides enough steam channels, neither influences mass transport process, does not also influence the distribution of electrostatic charge on activated carbon fiber cloth.
Implementation process:
See also Fig. 1, Fig. 2.
The cooling adsorption process: cooling water enters in the cavity from end socket 3 entrance points, and orifice plate flows into metal U-shaped pipe 5 below cavity, and fin 7 and activated carbon fiber cloth 81 are cooled off.Activated carbon fiber cloth 81 begins to adsorb the methanol vapor that riddles surrounding space by the duct of porous ceramics 82.When the vapour pressure of surrounding space was lower than the evaporating pressure of evaporimeter, the vacuum barrier valve 13 that connects adsorbent bed and evaporimeter was opened, and adsorbent absorbs the methanol vapor of flash-pot.Meanwhile, static input 6 is connected with dc power anode by control circuit, to activated carbon fiber cloth 81 input positive charges, strengthens adsorption process.Evaporimeter maintains evaporating state, absorbs in the evaporimeter heat of chilled water in the chilled water pipeline and freezes.After activated carbon fiber cloth 81 absorption was saturated, the vacuum barrier valve 13 that connects adsorbent bed and evaporimeter cut out, and the heat transport fluid pipeline is by switching, and entered in the cavity from end socket 3 entrance points from the hot water of thermal source.
The heating desorption process: hot water enters in end socket 3 cavitys from the heat transport fluid entrance point, and orifice plate flows into metal U-shaped pipe 5 below cavity, and fin 7 and activated carbon fiber cloth 81 are heated.Meanwhile, static input 6 is connected with the direct-current power supply earthing end by control circuit, discharges the positive charge on the activated carbon fiber cloth 81, strengthens desorption process.After activated carbon fiber cloth 81 was heated, the methyl alcohol that is adsorbed in wherein came out with the duct desorption of steam-like by porous ceramics 82, riddled the low vacuum space in the adsorbent bed, and vapour pressure raises gradually.Meanwhile, temperature is that the cooling water about 20 ℃ flows around the housing outside wall surface by the outer water jacket of housing, the methanol steam that desorption is come out is condensed into liquid at the inner walls face, discharge the heat of condensation, and along wall flow to the bottom, behind lime set outflow tube 11, vacuum valve 12, throttling arrangement, flow back to evaporimeter.The heat of condensation that discharges is taken away by the cooling water in the housing 2 outer surface cooling jackets.
Behind activated carbon fiber cloth 81 abundant desorptions, the vacuum valve 12 on the lime set outflow tube 11 cuts out, and the heat transport fluid pipeline is by switching, and cooling water cools off bed inner core-body 1 once more, beginning new round cooling adsorption process.
Claims (6)
1. the carbon fiber adsorption and catalytic combustion bed structure that electrostatic charge control is strengthened is characterized in that core body has the static input, can carry out the controlled electrostatic charge that charges and discharge to the adsorbent bed core body; When adsorbent bed was in adsorbed state, the static input linked to each other with dc power anode, and activated carbon fiber cloth charges into positive charge in bed, made the stack of the static field of force and micropore wall absorption potential, to strengthen adsorption effect; And when adsorbent bed is in detachment status, the static input is linked to each other with the direct-current power supply earthing end, and dischargeing positive charge, the balance field of force unbalance helps reducing desorption temperature.
2. carbon fiber adsorption and catalytic combustion bed structure according to claim 1 is characterized in that: between adsorbent bed core body and housing and the end socket, isolate to realize the static insulation by polytetrafluoroethylene (PTFE) or fluorubber insulative material.
3. carbon fiber adsorption and catalytic combustion bed structure according to claim 1 is characterized in that: described static input links to each other with earth terminal with dc power anode respectively by control circuit; The action of control circuit is synchronous with the vacuum barrier valve that is connected adsorbent bed and evaporimeter; Vapour pressure is lower than evaporator evaporation pressure in bed, and when the vacuum barrier valve was opened, the static input linked to each other with dc power anode by control circuit, adsorbs to strengthen to activated carbon fiber cloth input positive charge; Reach capacity when activated carbon fiber cloth adsorbs, when the vacuum barrier valve of connection adsorbent bed and evaporimeter cut out, the static input linked to each other with the earth terminal of dc source by control circuit, discharges positive charge, is beneficial to reduce desorption temperature.
4. carbon fiber adsorption and catalytic combustion bed structure according to claim 1 is characterized in that: core body is made up of core body end plate, metal U-shaped pipe, static input, aluminium fin; Core body end plate one side is provided with the static input, and lower surface has static insulated enclosure circle, links to each other with housing by static insulated enclosure circle; Metal U-shaped pipe upper end is affixed with the core body end plate; Metal U-shaped pipe two upper ends connect core body end plate, static insulation board and end socket base plate, communicate with two cavitys of end socket respectively; Aluminium fin level evenly distributes, and is fixed on the metal U-shaped pipe; The upper and lower surface of each aluminium fin is all adhered to activated carbon fiber cloth, constitutes an absorbing unit, separates with porous ceramics between the absorbing unit.
5. carbon fiber adsorption and catalytic combustion bed structure according to claim 4 is characterized in that: described aluminium fin and activated carbon fiber cloth and the assembling of porous ceramics entire pressurisation when improving the activated carbon fiber cloth bulk density, do not influence the refrigerant vapour passage; The thickness of activated carbon fiber cloth is at 1 ~ 3mm, and the average pore size of used porous ceramics is at 0.5～3mm, and thickness is at 3～5mm.
6. carbon fiber adsorption and catalytic combustion bed structure according to claim 4 is characterized in that: described metal U-shaped pipe is a plurality of; Average pore size 〉=the 2nm of activated carbon fiber cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100308413A CN100428977C (en) | 2004-04-08 | 2004-04-08 | Structure of active carbon fibrous adsorptive bed with static charge reinforcing control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100308413A CN100428977C (en) | 2004-04-08 | 2004-04-08 | Structure of active carbon fibrous adsorptive bed with static charge reinforcing control |
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| CN1679997A true CN1679997A (en) | 2005-10-12 |
| CN100428977C CN100428977C (en) | 2008-10-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592446A (en) * | 2018-06-28 | 2018-09-28 | 天津商业大学 | A kind of active carbon-methanol adsorption refrigeration system adsorbent bed |
| CN108731297A (en) * | 2018-06-28 | 2018-11-02 | 天津商业大学 | A kind of active carbon-methanol adsorption refrigeration system experimental bench |
| CN112963720A (en) * | 2021-03-29 | 2021-06-15 | 中国石油大学(华东) | Vehicle adsorbed natural gas storage tank |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3310759A1 (en) * | 1983-03-24 | 1984-09-27 | Linde Ag, 6200 Wiesbaden | ADSORBER |
| US4635209A (en) * | 1984-10-31 | 1987-01-06 | Westinghouse Electric Corp. | Overspeed protection control arrangement for a steam turbine generator control system |
| DE69929056D1 (en) * | 1998-08-03 | 2006-01-26 | Tokyo Electron Ltd | COOLANT EXTINGUISHING METHOD FOR AN ESFR CHAMBER |
| US6579351B2 (en) * | 2001-10-12 | 2003-06-17 | Automotive Fluid Systems, Inc. | Integrated filter and adsorbent unit for an integrated receiver-dryer and related method of manufacturing |
| RU2200283C1 (en) * | 2001-11-28 | 2003-03-10 | Общество с ограниченной ответственностью "Акела-Н" | Adsorber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592446A (en) * | 2018-06-28 | 2018-09-28 | 天津商业大学 | A kind of active carbon-methanol adsorption refrigeration system adsorbent bed |
| CN108731297A (en) * | 2018-06-28 | 2018-11-02 | 天津商业大学 | A kind of active carbon-methanol adsorption refrigeration system experimental bench |
| CN112963720A (en) * | 2021-03-29 | 2021-06-15 | 中国石油大学(华东) | Vehicle adsorbed natural gas storage tank |
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| CN100428977C (en) | 2008-10-29 |
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