CN107764108A - The fluid-bed heat exchanger of solid particle Efficient Cycle - Google Patents
The fluid-bed heat exchanger of solid particle Efficient Cycle Download PDFInfo
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- CN107764108A CN107764108A CN201610708779.1A CN201610708779A CN107764108A CN 107764108 A CN107764108 A CN 107764108A CN 201610708779 A CN201610708779 A CN 201610708779A CN 107764108 A CN107764108 A CN 107764108A
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- communicating pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D13/00—Heat-exchange apparatus using a fluidised bed
Abstract
The present invention relates to a kind of fluid-bed heat exchanger of solid particle Efficient Cycle, mainly solving the technical problem that the circulating fluid bed heat exchanger solid particle in conventional art China and foreign countries is unable to Efficient Cycle.The present invention is by using a kind of system formed including communicating pipe 5, top set's pipe 6, inferior division pipe 7, down-comer 14, horizontal tube 15, in top set's pipe 6, spring stop A16 and spring stop B17 is set, the technical scheme for setting spring stop C18 in inferior division pipe 7 preferably solves above-mentioned technical problem, available for outer circulation type fluid-bed heat exchanger, promote solid particle Efficient Cycle in circulating fluid bed heat exchanger outside.
Description
Technical field
The invention belongs to chemical field, specifically, belonging to chemical industry heat transmission equipment long-term operation field, it is related to a kind of solid
The fluid-bed heat exchanger of particle Efficient Cycle, being widely used in solving traditional outer circulation type fluid-bed heat exchanger solid particle can not
The problem of Efficient Cycle.
Background technology
Heat exchanger is widely used in industries such as oil, chemical industry, the energy.Increase however as usage time, in heat exchanger
Unavoidably dirt adhesion be present, so as to cause the reduction of heat exchanger heat exchange efficiency, resistance increase, influence heat exchanger and normally transport
OK.
Outer circulation type fluid-bed heat exchanger, to replace traditional heat exchangers, can be improved and changed as a kind of new type heat exchanger
Hot device heat transfer effect, effective extension fixture run time.
Solid particle can be fluidized effectively in circulating fluid bed heat exchanger outside and circulation is that outer circulation type fluid bed changes
The precondition that hot device can effectively be run.In the range of heat exchanger liquid phase normal flow, used solid particle is generally
Can fluidize very well, and solid particle can Efficient Cycle often turn into and restrict outer circulation type fluid-bed heat exchanger large-scale application
Bottleneck.Because pipe resistance is small all the way for down-comer and liquid-solid separator in traditional outer circulation type fluid-bed heat exchanger, solid particle
Often held in down-comer by upward liquid phase, form short circuit, cause solid particle can not complete Efficient Cycle, thus influenceed
The normal use of outer circulation type fluid-bed heat exchanger.
Document US6350928 discloses a kind of outer circulation type fluid-bed heat exchanger, and document US5676201 discloses another kind
Outer circulation type fluid-bed heat exchanger.Above-mentioned fluid-bed heat exchanger is not provided with clear and definite solid particle circulating member, so as to cause
It is ineffective, or even can not run.Document CN102921179 discloses a kind of outer circulation type fluid-bed heat exchanger, the fluid bed
Heat exchanger, which uses, installs undergauge nozzle between down-comer and horizontal tube, the negative pressure formed using undergauge promotes solid particle to circulate,
The outer circulation type fluid-bed heat exchanger of this structure requires that nozzle design and institute's applying working condition tightly agree with, in most cases simultaneously
Solid particle Efficient Cycle can not be realized, even if solid particle can circulate in extremely limited opereating specification, it circulates effect
Fruit is also bad.
The present invention provides a kind of fluid-bed heat exchanger of solid particle Efficient Cycle, using communicating pipe 5, top set's pipe 6, under
The system that branched pipe 7, down-comer 14 and horizontal tube 15 are formed, passes through spring stop A16, spring stop B17, spring stop C18
Solid particle Efficient Cycle is realized, targetedly solves above mentioned problem.
The content of the invention
The technical problems to be solved by the invention are that outer circulation type fluid-bed heat exchanger solid particle can not in the prior art
A kind of the problem of Efficient Cycle, there is provided fluid-bed heat exchanger of solid particle Efficient Cycle.The fluid-bed heat exchanger has solid
The advantages of solids circulation flux is big, stable operation, thus stronger anti-scale removal and augmentation of heat transfer ability can be provided.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:A kind of solid particle Efficient Cycle
Fluid-bed heat exchanger, the fluid-bed heat exchanger by feed pot 1, heat exchanger 2, liquid-solid separator 3, measuring tank 4, communicating pipe 5, upper point
Branch pipe 6, inferior division pipe 7, particulate filter plates 8, liquid storage groove 9 and liquid circulation pump 10 form.Solid particle is by feed pot 1 from lower point
Added in horizontal tube 15 between branch pipe 7 and the lower end import of heat exchanger 2, the upper end outlet of heat exchanger 2 connection liquid-solid separator 3, liquid
Solid separator 3 branches away two-way, and liquid storage groove 9 is entered after liquid phase is overflowed above particulate filter plates 8 all the way, passes through liquid circulation pump
10 return to the lower end import of heat exchanger 2, and another way solid phase enters top set's pipe 6, communicating pipe 5 and inferior division pipe 7 from down-comer 14,
The lower end import of heat exchanger 2 is backed into after completing solid particle Efficient Cycle in top set's pipe 6, communicating pipe 5 and inferior division pipe 7.
In above-mentioned technical proposal, the communicating pipe 5 connects down-comer 14 and horizontal tube 15;Communicating pipe 5 and the phase of down-comer 14
Hand over and form top set's pipe 6;Communicating pipe 5 and the intersecting composition inferior division pipe 7 of horizontal tube 15.With scheming in caliber, the center of top set's pipe 6
Distance to the upper tube wall of horizontal tube 15 is more than or equal to 3 times of the bore of down-comer 14, the angle between communicating pipe 5 and horizontal tube 15
Scope is 30 degree to 45 degree.
In above-mentioned technical proposal, spring stop A16 and spring stop B17, the inferior division are set in top set's pipe 6
Spring stop C18 is set in pipe 7.
In above-mentioned technical proposal, the spring stop A16 is flat board, and length is right for the upper tube wall of communicating pipe 5 and down-comer 14
For tube wall intersection point to 1.1 times to 1.5 times of 5 times tube walls of communicating pipe and the left tube wall intersection point distance of down-comer 14, spring is arranged on connection
The upper tube wall of pipe 5 and the right tube wall point of intersection of down-comer 14.
In above-mentioned technical proposal, the spring stop B17 is " L " shape folded plate, and folded plate angle is than communicating pipe 5 and horizontal tube 15
Between angle it is big 90 degree;Spring stop B17 is close to a length of upper tube wall of communicating pipe 5 of spring side plate and the left tube wall intersection point of down-comer 14
Spring stop A16 thickness is subtracted to 5 times tube walls of communicating pipe and the left tube wall intersection point distance of down-comer 14, spring stop B17 is remote
The a length of upper tube wall of communicating pipe 5 of spring side plate and the left tube wall intersection point of down-comer 14 are to 14 right pipe of the upper tube wall of communicating pipe 5 and down-comer
0.4 times to 0.6 times of wall intersection point distance, spring are arranged on 5 times tube walls of communicating pipe and the left tube wall point of intersection of down-comer 14.
In above-mentioned technical proposal, the spring stop C18 is flat board, and length is on the upper tube wall of communicating pipe 5 and horizontal tube 15
For tube wall intersection point to 1.1 times to 1.5 times of 5 times tube walls of communicating pipe and the upper tube wall intersection point distance of horizontal tube 15, spring is arranged on connection
5 times tube walls of pipe and the upper tube wall point of intersection of horizontal tube 15.
In above-mentioned technical proposal, the measuring tank 4 is made up of transparent material, and the inwall of measuring tank 4 indicates scale according to volume,
Indicate scale part volume and be raised to 12 liters for 8.
In above-mentioned technical proposal, the solid particle that the fluid-bed heat exchanger of the solid particle Efficient Cycle uses is inertia
Particle, refer specifically to heap density and be more than density of liquid phase, there is certain degree of hardness and intensity, and do not occur with medium in use occasion system
The solid particle of reaction, preferably zirconium silicate pearl, corundum ball, porcelain ball, alumina bead, bead, steel ball, engineering plastics, polyformaldehyde
One or more in particle, polytetrafluoroethylgranule granule, handstone, the wire of chopping, glueballs, more preferably bead, oxidation
Aluminium pill and zirconium silicate pearl.Solid particle average grain diameter is 2mm~5mm.Solid particle being averaged in the fluid-bed heat exchanger
Volume solid holdup is 3%~8%.
In above-mentioned technical proposal, the liquid phase fluid operated in flow rate scope that the fluid-bed heat exchanger uses is 1m/s~4m/
s。
In order to solve the above technical problems, a kind of method flowed using solid particle Efficient Cycle.Described in this method uses
The system that any one communicating pipe 5, top set's pipe 6, inferior division pipe 7, down-comer 14 and horizontal tube 15 are formed.In the system,
The non-spring sides of starting stage spring stop A16 fall within 5 times tube walls of communicating pipe, and spring stop C18 is non-, and spring side falls within horizontal tube 15
Lower tube wall, no liquid phase and solid phase.After liquid circulation pump 10 is opened, liquid phase push the spring baffle plate A16 is non-, and spring side falls within connection
The upper tube wall of pipe 5, spring stop B17 withstand non-spring side spring stop A16, and spring stop C18 is non-, and spring side falls within horizontal tube 15
Upper tube wall, liquid phase is without communicating pipe 5, and solid particle is in spring stop A16 disposed thereons.When spring stop A16 disposed thereons
Solid particle deadweight when being more than the upward thrust of liquid phase, the non-spring sides of spring stop A16 fall, and solid particle enters with liquid phase
Enter communicating pipe 5.As solid particle falls, solid particle deadweight reduces, and the non-springs of spring stop A16 continue to fall within communicating pipe 5
Upper tube wall, solid particle continue to deposit.When the solid particle deadweight of deposition in communicating pipe 5 is more than the upward thrust of liquid phase, bullet
The non-spring sides of spring baffle plate C18 fall, and solid particle enters horizontal tube 15 with liquid phase, into horizontal tube 15 solid particle by liquid
Mutually bring heat exchanger 2 into and complete circulation.As solid particle falls, solid particle deadweight reduces, and the non-springs of spring stop C18 continue
The upper tube wall of horizontal tube 15 is fallen within, solid particle continues to deposit.
In order to solve the above technical problems, circulation and metering side using solid particle in a kind of external circulation fluidized bed heat exchanger
Method.Solid particle adds from feed pot 1, enters heat exchanger 2 under liquid phase conveying.Solid particle completion pair in heat exchanger 2
Enter liquid-solid separator 3, the solid-liquid two-phase laminated flow in liquid-solid separator 3 after heat exchange the washing away of tube wall.When being not required to metering, valve II
12nd, valve III 13 is closed, and valve I 11 is opened, and solid particle passes through communicating pipe 5, top set's pipe 6, inferior division pipe 7, down-comer 14 and water
The system that flat pipe 15 is formed completes solid particle circulation, and the solid particle after circulating reenters heat exchanger 2.Need to measure
When, valve I 11, valve III 13 are closed, and valve II 12 is opened, and solid particle enters measuring tank 4;Valve II 12 is closed, and valve I 11 is opened, solid
Particle is measured;Valve III 13 is opened after the completion of metering, and solid particle enters down-comer 14, by communicating pipe 5, top set's pipe 6,
Solid particle circulation is completed after the system that inferior division pipe 7, down-comer 14 and horizontal tube 15 are formed, solid particle reenters heat exchange
Device 2.
In technical scheme and method, the liquid-solid separator 3 can be gravity sedimentation type liquid-solid separator and
Any one in liquid rotary type liquid-solid separator.
In technical scheme and method, with mass of solid particles in measuring tank 4 in unit interval during stable operation
Internal circulating load characterizes solid particle Efficient Cycle effect.Mass of solid particles internal circulating load calculation is in measuring tank 4:Solid
Grain mass circulation amount=density of solid particles × measuring tank scale part cumulative volume × measuring tank scale reading/time.
Using technical scheme, one kind, which uses, includes communicating pipe 5, top set's pipe 6, inferior division pipe 7, down-comer 14
The system formed with horizontal tube 15, by setting spring stop A16 and spring stop B17 in top set's pipe 6, in inferior division pipe 7
Set spring stop C18 to realize the fluid-bed heat exchanger of solid particle Efficient Cycle, achieve mass of solid particles internal circulating load
The preferable technique effect of 566 gram/minutes.
Brief description of the drawings
Fig. 1 is the fluid-bed heat exchanger schematic diagram of solid particle Efficient Cycle of the present invention.
Fig. 2 is position and its working state figure of the spring stop of the present invention in top set's pipe and inferior division pipe.
In Fig. 1,1 is feed pot;2 be heat exchanger;3 be liquid-solid separator;4 be measuring tank;5 be communicating pipe;6 be top set
Pipe;7 be inferior division pipe;8 be particulate filter plates;9 be liquid storage groove;10 be liquid circulation pump;11 be valve I;12 be valve II;13 be valve
Ⅲ;14 be down-comer;15 be horizontal tube.Feed pot 1 connects horizontal tube 15, and horizontal tube 15 is connected with the lower end import of heat exchanger 2, changed
The hot outlet of device 2 connection liquid-solid separator 3, liquid-solid separator 3 come out two-way, and liquid phase enters liquid after particulate filter plates 8 all the way
Storage tank 9, horizontal tube 15 is recycled back to by liquid circulation pump 10;Another way solid phase is by entering top set's pipe 6, solid after down-comer 14
Particle completes circulation in the system that communicating pipe 5, top set's pipe 6, inferior division pipe 7 and down-comer 14, horizontal tube 15 are formed;Solid
When particle need to measure, the pipeline of valve 12, measuring tank 4 and valve 13 is switched to, top set's pipe 6 is entered after metering.
In Fig. 2,16 be spring stop A;17 be spring stop B;18 be spring stop C.State I is original state, spring
The non-spring sides of baffle plate A16 fall within 5 times tube walls of communicating pipe, and the non-spring sides of spring stop C18 fall within 15 times tube walls of horizontal tube.Start liquid
Enter state II after body circulation pump 10, liquid phase push the spring baffle plate A16 is non-, and spring side falls within the upper tube wall of communicating pipe 5, spring stop
B17 withstands non-spring side spring stop A16, and the non-spring sides of spring stop C18 fall within the upper tube wall of horizontal tube 15, and solid particle is in bullet
Spring baffle plate A16 disposed thereons.Enter when the solid particle deadweight of spring stop A16 disposed thereons is more than the upward thrust of liquid phase
State III, the non-spring sides of spring stop A16 fall, and solid particle enters communicating pipe 5 with liquid phase, as solid particle falls,
Solid particle deadweight reduces above spring stop A16, and the non-springs of spring stop A16 continue to fall within the upper tube wall of communicating pipe 5.Work as connection
Enter state IV when the solid particle deadweight of deposition is more than the upward thrust of liquid phase in pipe 5, under the non-spring sides of spring stop C18
Fall, solid particle enters horizontal tube 15 with liquid phase, then takes away completion circulation, as solid particle falls, spring by liquid phase
Solid particle deadweight reduces above baffle plate C18, and the non-springs of spring stop C18 continue to fall within the upper tube wall of horizontal tube 15.
Below by embodiment and comparative example, the present invention is further elaborated, but the method for the present invention is not limited in
This.
Embodiment
With reference to embodiment, the method for further illustrating the present invention.
【Embodiment 1】
Using the fluid-bed heat exchanger of solid particle Efficient Cycle shown in Fig. 1.Set in the outer circulation type fluid-bed heat exchanger
123 heat exchanging pipes, every pipe range 1000mm, caliber are 22 × 1.5mm of Φ, and pipe is in equilateral triangle arrangement.Horizontal tube caliber
50mm, down-comer caliber 25mm, Diameter of connecting pipe 32mm.Solid particle is average grain diameter 2mm bead, and solid particle is at this
Average external volume solid holdup in fluid-bed heat exchanger is 3%.Liquid phase is water, flow velocity 1m/s.Measuring tank scale part volume 12
Rise.Top set's tube center distance is from horizontal tube upper tube wall 150mm.30 degree of communicating pipe and horizontal tube angle.The long 55mm of spring stop A,
Spring stop B is away from the long 11.5mm in spring side, the long 70.5mm of spring stop C.Under the conditions of being somebody's turn to do, after stable operation, solid particle matter
Amount internal circulating load is 463 gram/minutes.
【Embodiment 2~11】
Using the fluid-bed heat exchanger of solid particle Efficient Cycle shown in Fig. 1.Set in the outer circulation type fluid-bed heat exchanger
123 heat exchanging pipes, every pipe range 1000mm, caliber are 22 × 1.5mm of Φ, and pipe is in equilateral triangle arrangement.Horizontal tube caliber
50mm, down-comer caliber 25mm, Diameter of connecting pipe 32mm.Liquid phase is water.It is average to change solid particle type (PT), solid particle
Average external volume solid holdup (SHU), liquid phase flow rate (LV), the measuring tank of particle diameter (PS), solid particle in the fluid-bed heat exchanger
Scale part volume (V), top set's tube hub to horizontal tube upper tube wall distance (D), communicating pipe and horizontal tube angle (A), spring
Baffle plate A length (LA), spring stop B are away from spring side length (LB), spring stop C length (LC).After stable operation, metering is solid
Body granular mass internal circulating load (PMC).Its result is listed in table 1.
【Comparative example 1~18】
Using the fluid-bed heat exchanger of solid particle Efficient Cycle shown in Fig. 1.Set in the outer circulation type fluid-bed heat exchanger
123 heat exchanging pipes, every pipe range 1000mm, caliber are 22 × 1.5mm of Φ, and pipe is in equilateral triangle arrangement.Horizontal tube caliber
50mm, down-comer caliber 25mm, Diameter of connecting pipe 32mm.Liquid phase is water.It is not provided with spring stop A, spring stop B, spring catch
One piece in plate C or two pieces, change solid particle type (PT), solid particle average grain diameter (PS), solid particle in the fluidisation
In average external volume solid holdup (SHU), liquid phase flow rate (LV), measuring tank scale part volume (V), top set's pipe in bed heat exchanger
The heart is remote to horizontal tube upper tube wall distance (D), communicating pipe and horizontal tube angle (A), spring stop A length (LA), spring stop B
Spring side length (LB), spring stop C length (LC).After stable operation, metering of solids granular mass internal circulating load (PMC).It is tied
Fruit is listed in table 2.
【Comparative example 19~24】
Using outer circulation type fluid-bed heat exchanger shown in Fig. 1, communicating pipe and spring stop are not provided with, in down-comer and level
Nozzle of the installation along liquid phase flow direction undergauge between pipe.Set 123 heat exchanging pipes in the outer circulation type fluid-bed heat exchanger, every
Pipe range 1000mm, caliber are 22 × 1.5mm of Φ, and pipe is in equilateral triangle arrangement.Horizontal tube caliber 50mm, down-comer caliber
25mm, change undergauge jet size relative aperture and undergauge nozzle mounting position.Solid particle is average grain diameter 2mm bead,
Average external volume solid holdup of the solid particle in the fluid-bed heat exchanger is 3%.Liquid phase is water, flow velocity 1m/s.Measuring tank is carved
Spend 12 liters of partial volume.After stable operation, metering of solids granular mass internal circulating load.Its result is listed in table 3.
【Comparative example 25】
Using outer circulation type fluid-bed heat exchanger shown in Fig. 1, communicating pipe and spring stop are not provided with.The outer circulation type fluidizes
123 heat exchanging pipes, every pipe range 1000mm are set in bed heat exchanger, caliber is 22 × 1.5mm of Φ, and pipe is arranged in equilateral triangle
Row.Horizontal tube caliber 50mm, down-comer caliber 25mm, solid particle are average grain diameter 2mm bead, and solid particle is in the stream
Average external volume solid holdup in heat exchanger of fluidized bed is 3%.Liquid phase is water, flow velocity 1m/s.12 liters of measuring tank scale part volume.
Solid particle is unable to Efficient Cycle under the conditions of being somebody's turn to do.
Table 1
Table 2
Table 3
Claims (10)
- A kind of 1. fluid-bed heat exchanger of solid particle Efficient Cycle, it is characterised in that fluid-bed heat exchanger by feed pot (1), Heat exchanger (2), liquid-solid separator (3), measuring tank (4), communicating pipe (5), top set's pipe (6), inferior division pipe (7), particulate filter plates (8), liquid storage groove (9), liquid circulation pump (10) composition;Solid particle is by feed pot (1) from inferior division pipe (7) and heat exchanger (2) added in the horizontal tube (15) between the import of lower end, heat exchanger (2) upper end outlet connection liquid-solid separator (3), solid-liquor separation Device (3) branches away two-way, and liquid phase enters liquid storage groove (9) after being overflowed above particulate filter plates (8) all the way, passes through liquid circulation pump (10) return to heat exchanger (2) lower end import, another way solid phase from down-comer (14) enter top set's pipe (6), communicating pipe (5) and under Branched pipe (7), back into and change after completion solid particle Efficient Cycle in top set's pipe (6), communicating pipe (5) and inferior division pipe (7) Hot device (2) lower end import.
- 2. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, it is characterised in that the communicating pipe (5) down-comer (14) and horizontal tube (15) are connected;(6) are managed by communicating pipe (5) and the intersecting top set that forms of down-comer (14);Communicating pipe (5) and horizontal tube (15) intersects composition inferior division pipe (7);With scheming in caliber, (6) center is managed to horizontal tube (15) by top set The distance of tube wall is more than or equal to 3 times of down-comer (14) bore;With scheming in caliber, communicating pipe (5) and horizontal tube (15) it Between angular range be 30 degree to 45 degree.
- 3. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, it is characterised in that the top set Manage and spring stop A (16) and spring stop B (17) is set in (6), spring stop C (18) is set in the inferior division pipe (7).
- 4. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 3, it is characterised in that spring stop A (16) be flat board, length be communicating pipe (5) upper tube wall and the right tube wall intersection point of down-comer (14) to tube wall and decline under communicating pipe (5) Manage (14) left tube wall intersection point distance 1.1 times to 1.5 times, spring stop A (16) spring are arranged on communicating pipe (5) upper tube wall with Drop pipe (14) right tube wall point of intersection.
- 5. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 3, it is characterised in that spring stop B (17) it is " L " shape folded plate, folded plate angle is bigger 90 degree than angle between communicating pipe (5) and horizontal tube (15), and spring stop B (17) is leaned on Short round spring side plate a length of communicating pipe (5) upper tube wall and the left tube wall intersection point of down-comer (14) to tube wall and decline under communicating pipe (5) Pipe (14) left tube wall intersection point distance subtracts the thickness of spring stop A (16), and spring stop B (17) is away from a length of company of spring side plate Siphunculus (5) upper tube wall and the left tube wall intersection point of down-comer (14) to communicating pipe (5) upper tube wall and the right tube wall intersection point of down-comer (14) away from From 0.4 times to 0.6 times, spring stop B (17) spring be arranged on communicating pipe (5) under tube wall and the left tube wall intersection point of down-comer (14) Place.
- 6. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 3, it is characterised in that spring stop C (18) be flat board, length be communicating pipe (5) upper tube wall and horizontal tube (15) upper tube wall intersection point to tube wall and level under communicating pipe (5) Manage (15) upper tube wall intersection point distance 1.1 times to 1.5 times, spring stop C (18) spring are arranged on tube wall and water under communicating pipe (5) Flat pipe (15) upper tube wall point of intersection.
- 7. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, it is characterised in that the measuring tank (4) it is made up of transparent material, measuring tank (4) inwall indicates scale according to volume, indicates scale part volume and is raised to 12 liters for 8.
- 8. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, it is characterised in that the fluid bed The solid particle that heat exchanger uses is that heap density is more than density of liquid phase, and it is lazy not react with medium in use occasion system Property particle, solid particle average grain diameter is 2mm~5mm, and average external volume of the solid particle in the fluid-bed heat exchanger contains admittedly Rate is 3%~8%;The liquid phase fluid operated in flow rate scope that the fluid-bed heat exchanger uses is 1m/s~4m/s.
- A kind of 9. method of solid particle Efficient Cycle flowing, using any one solid particle described in claim 2~6 The fluid-bed heat exchanger of Efficient Cycle, in communicating pipe (5), top set's pipe (6), inferior division pipe (7), down-comer (14), horizontal tube (15) in the system formed, it is characterised in that starting stage spring stop A (16), non-spring side fell within tube wall under communicating pipe (5), The non-spring sides of spring stop C (18) fall within tube wall under horizontal tube (15), no liquid phase and solid phase;After liquid circulation pump (10) is opened, The non-spring sides of liquid phase push the spring baffle plate A (16) fall within communicating pipe (5) upper tube wall, and spring stop B (17) is non-, and bullet is withstood in spring side The non-spring side of spring baffle plate A (16), spring stop C (18) falls within horizontal tube (15) upper tube wall, liquid phase without communicating pipe (5), Gu Body particle is in spring stop A (16) disposed thereon;It is upward that the solid particle deadweight of spring stop A (16) disposed thereon is more than liquid phase Thrust when, the non-spring sides of spring stop A (16) fall, and solid particle enters communicating pipe (5) with liquid phase;With solid particle Fall, solid particle deadweight reduces, and spring stop A (16) non-spring continues to fall within communicating pipe (5) upper tube wall, and solid particle continues Deposition;When the solid particle deadweight of deposition is more than liquid phase upward thrust in communicating pipe (5), the non-spring sides of spring stop C (18) Fall, solid particle enters horizontal tube (15) with liquid phase, and the solid particle into horizontal tube (15) brings heat exchanger into by liquid phase (2) circulation is completed;As solid particle falls, solid particle deadweight reduces, and spring stop C (18) non-spring continues to fall within level (15) upper tube wall is managed, solid particle continues to deposit.
- 10. the circulation of solid particle and metering method in a kind of external circulation fluidized bed heat exchanger, using in claim 1~8 The fluid-bed heat exchanger of any one solid particle Efficient Cycle, it is characterised in that solid particle adds from feed pot (1), Enter heat exchanger (2) under liquid phase conveying, solid particle is consolidated after completing to exchange the washing away of heat pipe wall in heat exchanger (2) into liquid Separator (3), in the interior solid-liquid two-phase laminated flow of liquid-solid separator (3), it is not required to valve II (12) during metering, valve III (13) is closed, valve I (11) open, solid particle is by communicating pipe (5), top set's pipe (6), inferior division pipe (7), down-comer (14) and horizontal tube (15) The system of composition completes solid particle circulation, and the solid particle after circulating reenters heat exchanger (2);Valve I when needing to measure (11), valve III (13) is closed, and valve II (12) is opened, and solid particle enters measuring tank (4), and valve II (12) is closed, and valve I (11) is beaten Open, solid particle is measured, and valve III (13) is opened after the completion of metering, and solid particle enters down-comer (14), by communicating pipe (5), solid particle is completed after the system that top set's pipe (6), inferior division pipe (7), down-comer (14) and horizontal tube (15) are formed to follow Ring, solid particle reenter heat exchanger (2).
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CN101097123A (en) * | 2007-07-06 | 2008-01-02 | 大连理工大学 | Process for using DC water source cold-heat power supply |
CN102759289A (en) * | 2012-07-31 | 2012-10-31 | 大连大学 | Sewage heat exchange device for large-diameter shell-tube type fluidized bed |
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