CN103245232A - High-temperature flue gas waste heat thermal tube recovery system - Google Patents

High-temperature flue gas waste heat thermal tube recovery system Download PDF

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Publication number
CN103245232A
CN103245232A CN2012100261021A CN201210026102A CN103245232A CN 103245232 A CN103245232 A CN 103245232A CN 2012100261021 A CN2012100261021 A CN 2012100261021A CN 201210026102 A CN201210026102 A CN 201210026102A CN 103245232 A CN103245232 A CN 103245232A
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pipe
water
tube
heat pipe
flue gas
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CN2012100261021A
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朱杰
朱宝泉
韩志强
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朱杰
朱宝泉
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Priority to CN2012100261021A priority Critical patent/CN103245232A/en
Publication of CN103245232A publication Critical patent/CN103245232A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a high-temperature flue gas waste heat thermal tube recovery system which comprises a radial thermal tube (1), a water distribution drum (2), a water collection drum (3), a vapor-liquid full-flow screw engine (4), a low-pressure steam recovery deivce (5), a stored water pumping deivce (6), an electric control cabinet (7) and a vacuum pump (8). The high-temperature flue gas waste heat thermal tube recovery system has the advantages that a middle drum is removed from the radial thermal tube (1), a flue gas tube (1-3) is moved down, working media (1-10) are filled into the lower portion of a thermal tube outer drum (1-1), a plurality of water through fin tubes are distributed on the upper portion of the thermal tube outer drum (1-1), stress borne by the radial thermal tube (1) is smaller than that borne by an outer drum and the middle drum by more than 10 times, and therefore weight and floor occupation of the recovery system can be greatly reduced. The radial thermal tube (1) can be connected with a flue gas source conveniently; the working media and vapor surround outside the flue gas tube (1-3) completely so that thermal loss hardly happens; a water inlet tube and a water outlet tube which are arranged at two ends do not need to penetrate through two layers of flue gas drum walls so that structural difficulty and construction difficulty are removed; and an expensive heat preservation layer of the thermal tube outer drum (1-1) is omitted.

Description

High-temperature flue gas waste heat heat pipe recovery system
Technical field
Technical solutions according to the invention belong to the heat-exchange apparatus field, concretely, be to belong to the heat-exchange apparatus field of condensing and evaporating that middle heat transfer medium is arranged in the closed conduct that feeds or pass conduit wall, according to International Patent Classification, belong to F28D 15/02.
Background technology
Existing high-temperature flue gas waste heat heat pipe recovery system has two big classes, the one, axial heat pipe, the 2nd, radial heat pipe.Disengagement area is big because radial heat pipe working medium is heated, and evaporating surface is short to the cryosurface path, and heat transfer rate is faster, and more the Da , Change thermal efficiency is higher for heat flow density, and volume is compacter, is subjected to professional person's more concern.Existing flue gas waste heat recovery radial heat pipe is divided into two big classes again, and a class is to be flue in the urceolus, is working medium in the middle tube, leakes water in the inner core; Another kind of is to be flue in the inner core, is working medium in the middle tube, leakes water in the urceolus.The former defective is that the high-temperature flue gas heat radiation is strong, needs high-quality external thermal insulation; Because the exhaust gases passes end face is annular canister, dock difficulty with the flue gas source; Water pipe inside passes in and out and all will pass double-deck flue wall, and structure and construction are all very complicated; Cryosurface is less, and heat release is had a surplus, and incomplete absorption has to lengthen pipeline, has increased occupation of land and cost.The latter's defective is that urceolus and middle tube are subjected to high pressure.Square be directly proportional bearing barrel is subjected under the identical high pressure stress and diameter, be subjected to the high pressure phase ratio with inner core, stress will increase 5-10 doubly, on big urceolus and middle tube, to increase many times wall thickness, many times weight and cost, this generally is unaffordable, especially for large-scale heat pipe.
Existing technology is 201020569710.3 as China's patent No., and name is called " a kind of radial heat exchanger ", and it comprises housing, radial heat pipe, tube sheet, heat-exchanging chamber and deflection plate; Tube sheet is two, lays respectively at the two ends of housing; Zone between housing and two tube sheets forms heat-exchanging chamber; Be installed with the radial heat pipe of suitable number between two tube sheets, the deflection plate of suitable number vertically is set between two tube sheets.By the cold fluid bottom horizontal flow sheet, the hot fluid perpendicular flow has realized the cross-flow passes of cold and hot fluid.Its weak point is: in high temperature fluid passage, a plurality of radial heat pipes are arranged, and will pass through a plurality of deflection plates, vertically upward, turn back vertically downward.For steelmaking converter one type high temp flue gas, contain a large amount of inflammable and explosive coal gas, also have a large amount of hard particles impurity.To the impact of radial heat pipe and deflection plate, the very fast abrasion in the place of being hit is damaged, and when blowing out purges, but on the corner can retain burning fume, blow-on again can cause the detonation of high-temperature flue gas.So, for inflammable and explosive high-temperature flue gas, must keep " plug flow ", frank and outspoken, unobstructed, nothing is choked with resentment.So this patent only is fit to the hot fluid of lower temperature, no fuel gas, is not suitable for high-temperature flue gas.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, broken through the traditional mode of radial heat pipe urceolus, middle tube, inner core, cancelled middle tube, have only urceolus and inner core.Inner core is walked the high temperature flue gas.Inner core is parallel downward eccentric the placement in urceolus, and an amount of working medium is poured in the bottom in the urceolus.Because inner core is eccentric the placement downwards, the top has had than large space, has just placed a plurality of finned tubes of leaking water at this space parallel, accepts working substance steam condensation heating.Like this, both solved smoke pipe interior, the too high problem of bearing stress of leaking water between urceolus, middle tube, solved smoke pipe again outside, increase the soak layer, dock problems such as difficult, that water pipe passes in and out structure, it is complicated to construct, cryosurface is too small with the flue gas source, make the flue gas source more convenient with docking of heat pipe, flue gas heat waste minimum, the condensation heating surface significantly increases.Annular flow path is subjected to high pressure between a plurality of finned tubes replacement urceolus, middle tube, and stress decrease has significantly been saved material and space more than 10 times, has improved heat transfer efficiency.
The object of the present invention is achieved like this: this high-temperature flue gas waste heat heat pipe recovery system is made up of radial heat pipe, water tube, Water collecting tube, steam-water helical screw power machine, low-pressure steam retracting device, water storage pumping installations, electrical control cubicles, vavuum pump eight parts.Radial heat pipe is vacuumized by heat pipe urceolus, heat pipe front shroud, fume pipe, left fin water pipe, middle fin water pipe, right fin water pipe, heat pipe back shroud, heat pipe and connects mouth, vacuum valve, working medium and form.Water tube by the water tube body, part water pipe, middle distributive pipe on the left side, part water pipe on the right side, water inlet pipe is formed.Water collecting tube is made up of the cylindrical shell that catchments, left collector pipe, middle collector pipe, right collector pipe, outlet pipe.Steam-water helical screw power machine is outsourcing screw generating set.The low-pressure steam retracting device is made up of low-pressure steam delivery pipe, low-pressure steam condenser.The water storage pumping installations is made up of storage tank, aqueduct, high-pressure hydraulic pump.Electrical control cubicles is made up of former steam-water helical screw power machine switch board and high-pressure hydraulic pump, vavuum pump distribution, control, all the important operational factor monitoring of high-temperature flue gas waste heat heat pipe recovery system, sensing, display unit, all important safety parameter monitorings, sensing, demonstration, warning device.Vavuum pump also is outsourcing device.Heat pipe urceolus, fume pipe, left finned tube, middle finned tube, right finned tube two ends connect with heat pipe front shroud and the welding of heat pipe back shroud respectively in the radial heat pipe, vacuumize and connect the welding of mouth and heat pipe back shroud and connects, vacuum valve and vacuumize and connect the mouth thread connection.In the water tube water tube body with part water pipe, middle distributive pipe on the left side, part water pipe on the right side, water inlet pipe is welding and connects.The cylindrical shell that catchments in the Water collecting tube is welding with left collector pipe, middle collector pipe, right collector pipe, outlet pipe and connects, and outlet pipe and steam-water helical screw power machine are by flange, Bolt Connection.Low-pressure steam retracting device low pressure steam delivery pipe and steam-water helical screw power machine are by flange, Bolt Connection, and low-pressure steam delivery pipe and low-pressure steam condenser are by flange, Bolt Connection.Aqueduct and high-pressure hydraulic pump are by flange, Bolt Connection in the water storage pumping installations, and high-pressure hydraulic pump and water inlet pipe are by flange, Bolt Connection.Electrical control cubicles connects with high-pressure hydraulic pump, vavuum pump, steam-water helical screw power machine by cable, connects with each collection point sensor by lead.Vavuum pump connects with vacuum valve by conduit in needs filling working medium with when vacuumizing.
This high-temperature flue gas waste heat heat pipe recovery system has following characteristics:
1, broken through the traditional mode of radial heat pipe urceolus, middle tube, inner core, removed middle tube, inner core moves down, inner core is flat, and the bottom fills working medium in the urceolus, arranges a plurality of finned tubes of leaking water in the urceolus internal upper part large space, absorption condensation heat is formed a kind of brand-new radial heat pipe.
2, the relative urceolus radial heat pipe of leaking water, under identical flow, pressure, suffered stress ratio urceolus, the middle tube of a plurality of finned tubes of leaking water of native system is little more than 10 times, heating surface area also has significantly to be increased, significantly loss of weight, subtract cost, subtract occupation of land.
3, the radial heat pipe that inner core is leaked water, urceolus is walked the high temperature flue gas relatively, this radial heat pipe is that inner core is walked the high temperature flue gas, it is convenient to dock with the flue gas source; Inner core is surrounded by working medium and steam outward entirely, does not have heat waste substantially; The two ends water inlet pipe and water outlet pipe need not pass two-layer flue gas barrel, has removed complicated structure and difficulty of construction from; Saved the high price external thermal insulation of urceolus high-temperature flue gas pipe.
4, this radial heat pipe flue is the heavy caliber straight tube, forms typical plug flow, is particularly suitable for high temperature, inflammable, explosive, flue gas waste heat recovery that dustiness is big.According to flue gas source situation, the front can add ceramic deduster, removes bigger kindling material particle.According to the needs of the various UTILIZATION OF VESIDUAL HEAT IN of client, the steam that can export 2.8Mpa enters original steam net, directly admission turbine generating, the also steam water interface of exportable lower pressure, directly enters the steam-water helical screw power machine generating.This machine also can be according to client's needs, and in generating simultaneously, the steam that can export 0.4Mpa enters original steam vapour system.Native system is the low-pressure steam of output 0.05Mpa, enters storage tank and recycle after condensation.
Description of drawings
Fig. 1 high-temperature flue gas heat pipe residual neat recovering system schematic diagram.
Fig. 2 A-A cutaway view.
Component part numbers: radial heat pipe 1, water tube 2, Water collecting tube 3, steam-water helical screw power machine 4, low-pressure steam retracting device 5, water storage pumping installations 6, electrical control cubicles 7, vavuum pump 8, heat pipe urceolus 1-1, heat pipe front shroud 1-2, fume pipe 1-3, left side finned tube 1-4, middle finned tube 1-5, right finned tube 1-6, heat pipe back shroud 1-7, heat pipe vacuumizes and meets mouth 1-8, vacuum valve 1-9, working medium 1-10, water tube body 2-1, part water pipe 2-2 on the left side, middle distributive pipe 2-3, part water pipe 2-4 on the right side, water inlet pipe 2-5, cylindrical shell 3-1 catchments, middle collector pipe 3-2, left side collector pipe 3-3, right collector pipe 3-4, outlet pipe 3-5, low-pressure steam delivery pipe 5-1, low-pressure steam condenser 5-2, storage tank 6-1, aqueduct 6-2, high-pressure hydraulic pump 6-3.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
By among Fig. 1, Fig. 2 as can be seen, this high-temperature flue gas heat pipe residual neat recovering system is made up of radial heat pipe 1, water tube 2, Water collecting tube 3, steam-water helical screw power machine 4, low-pressure steam retracting device 5, water storage pumping installations 6, electrical control cubicles 7, vavuum pump 8.All connect with welding between radial heat pipe 1 and water tube 2, the Water collecting tube 3.Between Water collecting tube 3 and the steam-water helical screw power machine 4, between steam-water helical screw power machine 4 and the low-pressure steam retracting device 5, between low-pressure steam retracting device 5 and the water storage pumping installations 6, pass through flange, Bolt Connection between water storage pumping installations 6 and the water tube 2 respectively.Connect by cable, lead between electrical control cubicles 7 and steam-water helical screw power machine 4, water storage pumping installations 6, the vavuum pump 8.Steam-water helical screw power machine 4 is outsourcing piece with vavuum pump 8.Electrical control cubicles 7 is assembly, and electric power and control signal are provided, and connects by the important operational factor of lead and each, important safety parameter acquisition point sensor.
Radial heat pipe 1 is taken out by heat pipe urceolus 1-1, heat pipe front shroud 1-2, fume pipe 1-3, left finned tube 1-4, middle finned tube 1-5, right finned tube 1-6, heat pipe back shroud 1-7, heat pipe that straight sky meets mouth 1-8, vacuum valve 1-9, working medium 1-10 form.The left end of fume pipe 1-3 is bellows.Heat pipe urceolus 1-1, fume pipe 1-3, left finned tube 1-4, middle finned tube 1-5, right finned tube 1-6 two ends connect with heat pipe front shroud 1-2 and heat pipe back shroud 1-7 welding respectively, heat pipe vacuumizes and connects mouth 1-8 and heat pipe back shroud 1-7 welding and connect, and vacuum valve 1-9 and heat pipe vacuumize and connect mouth 1-8 thread connection.Vavuum pump 8 connects with vacuum valve 1-9 by conduit at needs filling working medium 1-10 with when vacuumizing.
Water tube 2 by water tube body 2-1, part water pipe 2-2, middle distributive pipe 2-3 on the left side, part water pipe 2-4 on the right side, water inlet pipe 2-5 forms.Water tube body 2-1 with part water pipe 2-2, middle distributive pipe 2-3 on the left side, part on the right side water pipe 2-4, water inlet pipe 2-5 be the welding connect.Part water pipe 2-2, middle distributive pipe 2-3 on the left side, part water pipe 2-4 on the right side and all connect with heat pipe front shroud 1-2 welding.
Water collecting tube 3 is made up of the cylindrical shell 3-1 that catchments, middle collector pipe 3-2, left collector pipe 3-3, right collector pipe 3-4, outlet pipe 3-5.The cylindrical shell 3-1 that catchments is welding with middle collector pipe 3-2, left collector pipe 3-3, right collector pipe 3-4, outlet pipe 3-5 and connects.Outlet pipe 3-5 and steam-water helical screw power machine 4 link by flange, bolt.
Low-pressure steam retracting device 5 is made up of low-pressure steam delivery pipe 5-1, low-pressure steam condenser 5-2.Low-pressure steam delivery pipe 5-1 and steam-water helical screw power machine 4 are by flange, Bolt Connection, and low-pressure steam delivery pipe 5-1 and low-pressure steam condenser 5-2 are by flange, Bolt Connection.
Water storage pumping installations 6 is made up of storage tank 6-1, aqueduct 6-2, high-pressure hydraulic pump 6-3.Aqueduct 6-2 inserts in the storage tank 6-1 water.Aqueduct 6-2 and high-pressure hydraulic pump 6-3 are by flange, Bolt Connection.High-pressure hydraulic pump 6-3 and water inlet pipe 2-5 are by flange, Bolt Connection.Automatically controlledly refuse 7 and connect with steam-water helical screw power machine 4, high-pressure hydraulic pump 6-3, vavuum pump 8 by cable conductor.
This high-temperature flue gas waste heat heat pipe recovery system course of work is as follows: vacuumize by heat pipe and meet mouth 1-8 and inject an amount of working medium 1-10 in the heat pipe urceolus 1-1, and startup vavuum pump 8 vacuumizes, reach the vacuum of setting, turn-off vacuum valve 1-9, start high-pressure hydraulic pump 6-3, current begin slow closed cycle, can open high-temperature flue gas and enter fume pipe 1-3 this moment, fume pipe 1-3 tube inwall is subjected to the strong width of cloth and penetrates and Convective Heating, heat up rapidly, heat packs is trapped among the working medium 1-10 of pipe outer wall rapidly, and a large amount of explosive evaporations of working medium 1-10 become in the whole heat pipe urceolus of the steam Chong Full 1-1 tube, steam touches each finned tube 1-4 of water flowing, 1-5, the 1-6 outside wall surface is condensed into liquid at once, is attached to outside wall surface, emit a large amount of condensation heat simultaneously, the flowing water in the heating tube.The continuous integrated drop of condensation working medium 1-10 falls into bottom liquid level and fume pipe 1-3 upper surface, continues to be heated evaporation, constantly circulation repeatedly.Along with water temperature in finned tube 1-4,1-5, the 1-6 pipe raises, the pipe internal pressure constantly raises, and reaches a setting value, and steam-water helical screw power machine 4 will drivenly generate electricity, low-pressure steam enters low-pressure steam condenser 5-2 through low-pressure steam delivery pipe 5-1 and is condensed into water, gets back to storage tank 6-1.In the course of work, electrical control cubicles 7 is power supply and control centres of whole high-temperature flue gas waste heat heat pipe recovery system.Provide electric power and signal by cable and lead and high-pressure hydraulic pump 6-3, vavuum pump 8, steam-water helical screw power machine 4, link by lead and each important operational factor, security parameter measurement point sensor, realize monitoring, demonstration, early warning and automatic safe operation.

Claims (7)

1. high-temperature flue gas waste heat heat pipe recovery system, it is characterized in that: it comprises radial heat pipe (1), water tube (2), Water collecting tube (3), steam-water helical screw power machine (4), low-pressure steam retracting device (5), water storage pumping installations (6), electrical control cubicles (7), vavuum pump (8); All connect with welding between radial heat pipe (1) and water tube (2), the Water collecting tube (3); Between Water collecting tube (3) and the steam-water helical screw power machine (4), between steam-water helical screw power machine (4) and the low-pressure steam retracting device (5), between low-pressure steam retracting device (5) and the water storage pumping installations (6), pass through flange, Bolt Connection between water storage pumping installations (6) and the water tube (2) respectively; Electrical control cubicles (7) connects by cable, lead between (8) with steam-water helical screw power machine (4), water storage pumping installations (6), vavuum pump.
2. according to the described high-temperature flue gas waste heat of claim 1 heat pipe recovery system, it is characterized in that: described radial heat pipe (1) comprises that heat pipe urceolus (1-1), heat pipe front shroud (1-2), fume pipe (1-3), left finned tube (1-4), middle finned tube (1-5), right finned tube (1-6), heat pipe back shroud (1-7), heat pipe take out straight sky and connect mouth (1-8), vacuum valve (1-9), working medium (1-10); The left end of fume pipe (1-3) is bellows, heat pipe urceolus (1-1), fume pipe (1-3), left finned tube (1-4), middle finned tube (1-5), right finned tube (1-6) two ends connect with heat pipe front shroud (1-2) and heat pipe back shroud (1-7) welding respectively, heat pipe vacuumizes and connects the welding of mouth (1-8) and heat pipe back shroud (1-7) and connects, and vacuum valve (1-9) and heat pipe vacuumize and connect mouth (1-8) thread connection; Vavuum pump (8) connects with vacuum valve (1-9) by conduit; Arrange left finned tube (1-4), middle finned tube (1-5), the right finned tube (1-6) of leaking water in the top large space of heat pipe urceolus (1-1); The interior bottom of heat pipe urceolus (1-1) fills working medium (1-10).
3. according to the described high-temperature flue gas waste heat of claim 1 heat pipe recovery system, it is characterized in that: described water tube (2) comprises water tube body (2-1), parts water pipe (2-2) on the left side, middle distributive pipe (2-3), part water pipe (2-4), water inlet pipe (2-5) on the right side; Water tube body (2-1) with part water pipe (2-2), middle distributive pipe (2-3) on the left side, part water pipe (2-4) on the right side, water inlet pipe (2-5) is welding and connects; Part water pipe (2-2), middle distributive pipe (2-3) on the left side, part water pipe (2-4) on the right side and all connect with heat pipe front shroud (1-2) welding.
4. according to the described high-temperature flue gas waste heat of claim 1 heat pipe recovery system, it is characterized in that: described Water collecting tube (3) comprises the cylindrical shell that catchments (3-1), middle collector pipe (3-2), left collector pipe (3-3), right collector pipe (3-4), outlet pipe (3-5); The cylindrical shell (3-1) that catchments is welding with middle collector pipe (3-2), left collector pipe (3-3), right collector pipe (3-4), outlet pipe (3-5) and connects; Outlet pipe (3-5) links by flange, bolt with steam-water helical screw power machine (4).
5. according to the described high-temperature flue gas waste heat of claim 1 heat pipe recovery system, it is characterized in that: described low-pressure steam retracting device (5) comprises low-pressure steam delivery pipe (5-1), low-pressure steam condenser (5-2); Low-pressure steam delivery pipe (5-1) passes through flange, Bolt Connection with steam-water helical screw power machine (4), and low-pressure steam delivery pipe (5-1) passes through flange, Bolt Connection with low-pressure steam condenser (5-2).
6. according to the described high-temperature flue gas waste heat of claim 1 heat pipe recovery system, it is characterized in that: described water storage pumping installations (6) comprises storage tank (6-1), aqueduct (6-2), high-pressure hydraulic pump (6-3); Aqueduct (6-2) inserts in storage tank (6-1) water, and aqueduct (6-2) passes through flange, Bolt Connection with high-pressure hydraulic pump (6-3); High-pressure hydraulic pump (6-3) passes through flange, Bolt Connection with water inlet pipe (2-5).
7. according to the described high-temperature flue gas waste heat of claim 1 heat pipe recovery system, it is characterized in that: described automatically controlled refusing (7) connects with steam-water helical screw power machine (4), high-pressure hydraulic pump (6-3), vavuum pump (8) by cable conductor.
CN2012100261021A 2012-02-07 2012-02-07 High-temperature flue gas waste heat thermal tube recovery system Pending CN103245232A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590865A (en) * 2013-11-22 2014-02-19 河北工业大学 Industrial waste heat recovery and power generation system
CN104456498A (en) * 2014-11-19 2015-03-25 大连海事大学 Evaporation device capable of being used for heat recycling

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CN201463276U (en) * 2009-08-20 2010-05-12 安阳方快锅炉有限公司 Finned diaphragm wall condensation type vacuum boiler
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Publication number Priority date Publication date Assignee Title
CN2604651Y (en) * 2003-03-19 2004-02-25 冀东石油勘探开发公司 Oil and gas fuel vacuum boiler
CN1670429A (en) * 2005-02-06 2005-09-21 河南德润锅炉有限公司 Embedded vacuum boiler combination barrel and vacuum boiler
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590865A (en) * 2013-11-22 2014-02-19 河北工业大学 Industrial waste heat recovery and power generation system
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CN104456498A (en) * 2014-11-19 2015-03-25 大连海事大学 Evaporation device capable of being used for heat recycling
CN104456498B (en) * 2014-11-19 2016-06-01 大连海事大学 A kind of evaporation unit that can be used for heat recuperation

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