CN107764108B - 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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- CN107764108B CN107764108B CN201610708779.1A CN201610708779A CN107764108B CN 107764108 B CN107764108 B CN 107764108B CN 201610708779 A CN201610708779 A CN 201610708779A CN 107764108 B CN107764108 B CN 107764108B
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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
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Abstract
The present invention relates to a kind of fluid-bed heat exchangers of solid particle Efficient Cycle, mainly to solve the technical issues of circulating fluid bed heat exchanger solid particle in traditional technology China and foreign countries is unable to Efficient Cycle.The present invention is by using a kind of system constituted 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 A(16 is set) and spring stop B(17), inferior division pipe (7) be arranged spring stop C(18) technical solution preferably solve above-mentioned technical problem, it can be used 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 fields, specifically, belonging to chemical industry heat exchange equipment long-term operation field, are 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 cannot
The problem of Efficient Cycle.
Background technique
Heat exchanger is widely used in industries such as petroleum, chemical industry, the energy.However as using the time to increase, in heat exchanger
Inevitable there are dirt adhesions, and so as to cause the reduction of heat exchanger heat exchange efficiency, resistance increases, influences heat exchanger and normally transport
Row.
Outer circulation type fluid-bed heat exchanger can be improved and change to replace traditional heat exchangers as a kind of new type heat exchanger
Hot device heat transfer effect effectively extends device runing time.
Solid particle can effectively fluidize in circulating fluid bed heat exchanger outside and circulation is that outer circulation type fluidized bed changes
The precondition that hot device can effectively be run.Within the scope of heat exchanger liquid phase normal flow, used solid particle is generally
Can fluidize very well, and solid particle can Efficient Cycle often become and restrict outer circulation type fluid-bed heat exchanger large-scale application
Bottleneck.Since 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
It is often held in down-comer by upward liquid phase, forms short circuit, solid particle is caused to be unable to complete Efficient Cycle, thus influenced
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 specific solid particle circulating member, so as to cause
It is ineffective, or even cannot run.Document CN102921179 discloses a kind of outer circulation type fluid-bed heat exchanger, the fluidized bed
Heat exchanger, which uses, installs undergauge nozzle between down-comer and horizontal tube, promote solid particle to recycle using the negative pressure that undergauge is formed,
The outer circulation type fluid-bed heat exchanger of this structure requires nozzle design and institute's applying working condition tightly to agree with, in most cases simultaneously
It can not achieve solid particle Efficient Cycle, even if solid particle can recycle in extremely limited opereating specification, circulation 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 constituted, passes through spring stop A16, spring stop B17, spring stop C18
It realizes solid particle Efficient Cycle, targetedly solves the above problem.
Summary of the invention
The technical problem to be solved by the present invention is to outer circulation type fluid-bed heat exchanger solid particle cannot in the prior art
The problem of Efficient Cycle, provides a kind of 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 is 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
It is added in horizontal tube 15 between the 2 lower end import of branch pipe 7 and heat exchanger, 2 upper end outlet of heat exchanger connects 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 2 lower end import of heat exchanger, and another way solid phase enters top set's pipe 6, communicating pipe 5 and inferior division pipe 7 from down-comer 14,
2 lower end import of heat exchanger 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 down-comer 14 phase
It hands over and constitutes top set's pipe 6；Communicating pipe 5 and the intersection of horizontal tube 15 constitute inferior division pipe 7.With scheming in caliber, 6 center of top set's pipe
Distance to 15 upper tube wall of horizontal tube is more than or equal to 3 times of 14 bore of down-comer, the angle between communicating pipe 5 and horizontal tube 15
Range 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 plate, and length is that 5 upper tube wall of communicating pipe and down-comer 14 are right
Tube wall intersection point descends 1.1 times to 1.5 times of tube wall and the left tube wall intersection point distance of down-comer 14 to communicating pipe 5, and spring is mounted on connection
5 upper tube wall of pipe 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 90 degree big；Spring stop B17 is close to a length of 5 upper tube wall of communicating pipe of spring side plate and the left tube wall intersection point of down-comer 14
The thickness of spring stop A16 is subtracted to the lower tube wall of communicating pipe 5 and the left tube wall intersection point distance of down-comer 14, spring stop B17 is separate
A length of 5 upper tube wall of communicating pipe of spring side plate and the left tube wall intersection point of down-comer 14 are to 5 upper tube wall of communicating pipe and the right pipe of down-comer 14
0.4 times to 0.6 times of wall intersection point distance, spring are mounted on the lower tube wall of communicating pipe 5 and the left tube wall point of intersection of down-comer 14.
In above-mentioned technical proposal, the spring stop C18 is plate, and length is on 5 upper tube wall of communicating pipe and horizontal tube 15
For tube wall intersection point to 1.1 times to 1.5 times of the lower 15 upper tube wall intersection point distance of tube wall and horizontal tube of communicating pipe 5, spring is mounted on connection
The lower 15 upper tube wall point of intersection of tube wall and horizontal tube of pipe 5.
In above-mentioned technical proposal, the measuring tank 4 is made of transparent material, and 4 inner wall of measuring tank indicates scale according to volume,
It indicates scale part volume and is 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, referring specifically to heap density has certain degree of hardness and intensity greater than density of liquid phase, and does 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 of particle, polytetrafluoroethylgranule granule, handstone, the wire of chopping, glueballs are a variety of, more preferable 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 range 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 constituted.In the system,
The non-spring side initial stage spring stop A16 falls within the lower tube wall of communicating pipe 5, 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 A16 is non-, and spring side falls within connection
5 upper tube wall of pipe, 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 thereon.When spring stop A16 disposed thereon
Solid particle self weight when being greater than the upward thrust of liquid phase, the non-spring side spring stop A16 falls, solid particle with liquid phase into
Enter communicating pipe 5.As solid particle falls, solid particle self weight reduces, and the non-spring of spring stop A16 continues to fall within communicating pipe 5
Upper tube wall, solid particle continue to deposit.When the solid particle self weight deposited in communicating pipe 5 is greater than the upward thrust of liquid phase, bullet
The non-spring side spring baffle C18 falls, and solid particle enters horizontal tube 15 with liquid phase, into horizontal tube 15 solid particle by liquid
It mutually brings heat exchanger 2 into and completes circulation.As solid particle falls, solid particle self weight reduces, and the non-spring of spring stop C18 continues
15 upper tube wall of horizontal tube 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 is added from feed pot 1, enters heat exchanger 2 under liquid phase conveying.Solid particle is completed 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
12, 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 constituted completes solid particle circulation, and the solid particle after recycling reenters heat exchanger 2.It needs 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 constituted, solid particle reenters heat exchange
Device 2.
In technical solution of the present invention 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 solution of the present invention and method, with mass of solid particles in measuring tank 4 in unit time when stable operation
Internal circulating load characterizes solid particle Efficient Cycle effect.Mass of solid particles internal circulating load calculation in measuring tank 4 are as follows: solid
Grain mass circulation amount=density of solid particles × measuring tank scale part total volume × measuring tank scale reading/time.
It is a kind of using including communicating pipe 5, top set's pipe 6, inferior division pipe 7, down-comer 14 using technical solution of the present invention
The system constituted with horizontal tube 15, by the way that spring stop A16 and spring stop B17 is arranged in top set's pipe 6, in inferior division pipe 7
Spring stop C18 is set to realize the fluid-bed heat exchanger of solid particle Efficient Cycle, achieves mass of solid particles internal circulating load
The preferable technical effect of 566 gram/minutes.
Detailed description of the invention
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 2 lower end import of heat exchanger, changes
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 is recycled back to horizontal tube 15 by liquid circulation pump 10；Another way solid phase enters top set's pipe 6, solid after passing through 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 constituted；Solid
When particle need to measure, it is switched to the pipeline of valve 12, measuring tank 4 and valve 13, 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 side baffle A16 falls within the lower tube wall of communicating pipe 5, and spring stop C18 is non-, and spring side falls within tube wall under horizontal tube 15.Start liquid
Enter state II after body circulation pump 10, the non-spring side liquid phase push the spring baffle A16 falls within 5 upper tube wall of communicating pipe, spring stop
B17 withstands non-spring side spring stop A16, and the non-spring side spring stop C18 falls within 15 upper tube wall of horizontal tube, and solid particle is in bullet
Spring baffle A16 disposed thereon.Enter when the self weight of the solid particle of spring stop A16 disposed thereon is greater than the upward thrust of liquid phase
State III, the non-spring side spring stop A16 fall, and solid particle enters communicating pipe 5 with liquid phase, as solid particle falls,
Solid particle self weight reduces above spring stop A16, and the non-spring of spring stop A16 continues to fall within 5 upper tube wall of communicating pipe.Work as connection
The solid particle self weight deposited in pipe 5 enters state IV when being greater than the upward thrust of liquid phase, under the non-spring side spring stop C18
It falls, solid particle enters horizontal tube 15 with liquid phase, then takes away completion circulation, as solid particle falls, spring by liquid phase
Solid particle self weight reduces above baffle C18, and the non-spring of spring stop C18 continues to fall within 15 upper tube wall of horizontal tube.
Below by embodiment and comparative example, the present invention is further elaborated, but method of the invention is not limited in
This.
Specific embodiment
Below with reference to embodiment, method of the invention is further illustrated.
[embodiment 1]
Using the fluid-bed heat exchanger of solid particle Efficient Cycle shown in Fig. 1.It is set in the outer circulation type fluid-bed heat exchanger
123 heat exchanging pipes, every long 1000mm of root canal, 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 the bead of average grain diameter 2mm, 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
It rises.Top set's tube center distance is from horizontal tube upper tube wall 150mm.Communicating pipe and 30 degree of horizontal tube angle.Spring stop A long 55mm,
Spring stop B is far from the long 11.5mm in spring side, spring stop C long 70.5mm.Under this condition, 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.It is set in the outer circulation type fluid-bed heat exchanger
123 heat exchanging pipes, every long 1000mm of root canal, 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.Change solid particle type (PT), solid particle are average
Average external volume solid holdup (SHU), the liquid phase flow rate (LV), measuring tank of partial size (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 A length (LA), spring stop B are far from spring side length (LB), spring stop C length (LC).After stable operation, metering is solid
Body granular mass internal circulating load (PMC).The results are shown in tables 1.
[comparative example 1~18]
Using the fluid-bed heat exchanger of solid particle Efficient Cycle shown in Fig. 1.It is set in the outer circulation type fluid-bed heat exchanger
123 heat exchanging pipes, every long 1000mm of root canal, 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 separate 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, it is not provided with communicating pipe and spring stop, in down-comer and level
Nozzle along liquid phase flow direction undergauge is installed 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 changes undergauge jet size relative aperture and undergauge nozzle mounting position.Solid particle is the bead of average grain diameter 2mm,
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
12 liters of partial volume of degree.After stable operation, metering of solids granular mass internal circulating load.The results are shown in tables 3.
[comparative example 25]
Using outer circulation type fluid-bed heat exchanger shown in Fig. 1, it is not provided with communicating pipe and spring stop.Outer circulation type fluidisation
123 heat exchanging pipes, every long 1000mm of root canal are set in bed heat exchanger, caliber is 22 × 1.5mm of Φ, and pipe is arranged in equilateral triangle
Column.Horizontal tube caliber 50mm, down-comer caliber 25mm, solid particle are the bead of average grain diameter 2mm, 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 this condition.
Table 1
Table 2
Table 3
Claims (9)
1. a kind of fluid-bed heat exchanger of solid particle Efficient Cycle, which is characterized in that fluid-bed heat exchanger by feed pot (1),
(6), inferior division pipe (7), particulate filter plates are managed by heat exchanger (2), liquid-solid separator (3), measuring tank (4), communicating pipe (5), top set
(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) it is added in the horizontal tube (15) between the import of lower end, heat exchanger (2) upper end outlet connects liquid-solid separator (3), solid-liquor separation
Device (3) branches away two-way, enters liquid storage groove (9) after liquid phase is 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) is backed into after completion solid particle Efficient Cycle in top set's pipe (6), communicating pipe (5) and inferior division pipe (7) and is changed
Hot device (2) lower end import；
Wherein, communicating pipe (5) connection down-comer (14) and horizontal tube (15)；Communicating pipe (5) and down-comer (14) intersect structure
(6) are managed at top set；Communicating pipe (5) and horizontal tube (15) intersection constitute inferior division pipe (7)；Liquid circulation pump (10) is arranged under
On horizontal tube (15) between drop pipe (14) and the crosspoint and liquid storage groove (9) of horizontal tube (15)；Setting in (6) is managed by top set
Spring stop A (16) and spring stop B (17), the inferior division pipe (7) is interior to be arranged spring stop C (18).
2. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, which is characterized in that with caliber center
Meter, the distance that horizontal tube (15) upper tube wall is managed (6) center to by top set are more than or equal to 3 times of down-comer (14) bore；With pipe
Scheming in diameter, the angular range between communicating pipe (5) and horizontal tube (15) are 30 degree to 45 degree.
3. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, which is characterized in that spring stop A
It (16) is plate, length is tube wall and decline under communicating pipe (5) upper tube wall and down-comer (14) right tube wall intersection point to communicating pipe (5)
1.1 times to 1.5 times for managing (14) Zuo Guanbi intersection point distance, spring stop A (16) spring are mounted on communicating pipe (5) upper tube wall under
Drop pipe (14) right tube wall point of intersection.
4. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, which is characterized in that spring stop B
It (17) is L shape folded plate, folded plate angle is 90 degree bigger 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 down-comer (14) Zuo Guanbi intersection point to communicating pipe (5) under tube wall and decline
Pipe (14) Zuo Guanbi intersection point distance subtracts the thickness of (16) spring stop A, and spring stop B (17) is far from a length of company of spring side plate
Siphunculus (5) upper tube wall and down-comer (14) Zuo Guanbi intersection point 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 is mounted on tube wall and down-comer (14) Zuo Guanbi intersection point under communicating pipe (5)
Place.
5. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, which is characterized in that spring stop C
It (18) is plate, length is tube wall and level under communicating pipe (5) upper tube wall and horizontal tube (15) upper tube wall intersection point to communicating pipe (5)
1.1 times to 1.5 times for managing (15) upper tube wall intersection point distance, spring stop C (18) spring is mounted on tube wall and water under communicating pipe (5)
Flat pipe (15) upper tube wall point of intersection.
6. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, which is characterized in that the measuring tank
(4) it is made of transparent material, measuring tank (4) inner wall indicates scale according to volume, indicates scale part volume as 8 and is raised to 12 liters.
7. the fluid-bed heat exchanger of solid particle Efficient Cycle according to claim 1, which is characterized in that the fluidized bed
The solid particle that heat exchanger uses is that heap density is greater 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 contain admittedly
Rate is 3%~8%；The liquid phase fluid operated in flow rate range that the fluid-bed heat exchanger uses is 1m/s~4m/s.
8. a kind of method of solid particle Efficient Cycle flowing, using solid particle described in any one in claim 2~5
The fluid-bed heat exchanger of Efficient Cycle manages (6), inferior division pipe (7), down-comer (14), horizontal tube in communicating pipe (5), top set
(15) in the system constituted, which is characterized in that the non-spring side initial stage spring stop A (16) falls within tube wall under communicating pipe (5),
The non-spring side spring stop C (18) falls within tube wall under horizontal tube (15), no liquid phase and solid phase；After liquid circulation pump (10) is opened,
The non-spring side liquid phase push the spring baffle A (16) falls 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 spring baffle 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 self weight of spring stop A (16) disposed thereon is greater than liquid phase
Thrust when, the non-spring side spring stop A (16) falls, and solid particle enters communicating pipe (5) with liquid phase；With solid particle
It falls, solid particle self weight 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 self weight deposited in communicating pipe (5) is greater than liquid phase upward thrust, the non-spring side spring stop C (18)
It falls, solid particle enters horizontal tube (15) with liquid phase, and the solid particle into horizontal tube (15) brings heat exchanger by liquid phase
(2) circulation is completed；As solid particle falls, solid particle self weight reduces, and spring stop C (18) non-spring continues to fall within level
(15) upper tube wall is managed, solid particle continues to deposit.
9. the circulation and metering method of solid particle in a kind of external circulation fluidized bed heat exchanger, using appointing in claim 1~7
It anticipates the fluid-bed heat exchanger of solid particle Efficient Cycle a kind of, which is characterized in that solid particle is added from feed pot (1),
Liquid phase conveying is lower to enter heat exchanger (2), and solid particle is completed to enter liquid after the washing away of exchange heat pipe wall in heat exchanger (2) to be divided admittedly
From device (3), in the interior solid-liquid two-phase laminated flow of liquid-solid separator (3), it is not required to valve II (12) when metering, valve III (13) is closed, valve I (11)
It opens, solid particle is constituted by communicating pipe (5), top set's pipe (6), inferior division pipe (7), down-comer (14) and horizontal tube (15)
System complete solid particle circulation, the solid particle after recycling reenters heat exchanger (2)；Valve I (11) when needing to measure,
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 opened, 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), upper point
Solid particle circulation, solid are completed after the system that branch pipe (6), inferior division pipe (7), down-comer (14) and horizontal tube (15) are constituted
Grain reenters heat exchanger (2).
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