CN208582988U - A kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition - Google Patents
A kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition Download PDFInfo
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- CN208582988U CN208582988U CN201820263831.1U CN201820263831U CN208582988U CN 208582988 U CN208582988 U CN 208582988U CN 201820263831 U CN201820263831 U CN 201820263831U CN 208582988 U CN208582988 U CN 208582988U
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Abstract
The utility model belongs to vaporizer technology field, disclose a kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition, including heating room and vaporization chamber, heating room is divided into uplink bed and down-flow fluidized bed using ECT, it is provided with partition in vaporization chamber, heats the mixed working fluid progress forced circulation for being added in room and vaporization chamber and being made of solid particle and liquid phase working fluid pure water；Partition top is equipped with solid particulate distributions plate, and solid particulate distributions plate includes the side plate for being fixedly connected on partition and the mainboard being vertically connected at the top of side plate, and mainboard is horizontally disposed and is located above down-flow fluidized bed using ECT；Mainboard is provided with multiple rows of circular hole become larger from inside to outside as solid particle passway.The utility model simple structure and convenient processing, it can prevent online, scale removal and augmentation of heat transfer, distribution of particles device can be effectively improved the distribution of particles situation of down-flow fluidized bed using ECT, solid particle can be made to be evenly distributed in the tube bank of down-flow fluidized bed using ECT, help further to improve augmentation of heat transfer and anti-, scale removal effect.
Description
Technical field
The utility model belongs to vaporizer technology field, is applied to the vertical two-tube-pass circulation with partition specifically
The augmentation of heat transfer of type evaporator and anti-, descalling technique.
Background technique
Vertical two-tube-pass circular form evaporator with partition is commonly utilized in the industrial productions such as akali sulphide.When with operation
Between extension, suspended matter or crystal in material are enriched to the wall surface of tube bank, form incrustation.The generation of dirt can make heat exchanger tube
Interior heat transfer coefficient decline, rate of heat transfer reduce, and heat exchange equipment needs periodically carry out shut-down cleaning, and it is serious to result in production capacity
Decline.Currently, anti-, descaling method used by the type evaporator mainly includes physical method and chemical method, such as: use is high
Hydraulic giant cleaning and chemical scale-inhibitor etc. are pressed, but there is parkings to influence production, increases operating cost and pollution ring for these methods
The disadvantages of border, and cannot fundamentally solve the scale problems of equipment.Fluidized bed heat exchanger antiscale power-saving technology is by fluidized bed skill
Art and heat transfer process combine, and by the rambling movement of the solid particle of fluidisation, constantly shear and collide heating wall,
The boundary layer of flowing and heat transfer is destroyed, heat transfer resistance is reduced, improves heat transfer efficiency, while can effectively extend the induction of fouling
Phase has the effect of significantly anti-, scale removal and augmentation of heat transfer.The implementation of the technology is a physical process, is prevented, the mechanism of scale removal
It is unrelated with the type of material, it has a extensive future, the online augmentation of heat transfer of heat exchange equipment and anti-, scale removal may be implemented.It is fluidizing
In the implementation process of bed heat exchange antiscale power-saving technology, distribution of the solid particle in tube bank will will affect particle to heating tube wall surface
Collision and shearing, and then influence augmentation of heat transfer and anti-, scale removal effect, thus particle being uniformly distributed in tube bank is that realize should
The premise of technology excellent operation.
Utility model content
To be solved in the utility model is the conductivity of heat in long-term use of the vertical two-tube-pass circular form evaporator with partition
The technical issues of capable of declining with wall surface fouling, a kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition is provided, will be flowed
Change bed heat exchange antiscale power-saving technology to apply in vertical two-tube-pass circular form evaporator, while in the fluidized-bed water gas gasifier
The side distribution of particles of uplink bed is relatively uniform, and the non-uniform problem of distribution of particles in down-flow fluidized bed using ECT, by the way that solid is arranged
Grain distribution grid improves the uniformity of distribution of particles, to achieve the effect that good online strengthening heat transfer and anti-, scale removal.
In order to solve the above-mentioned technical problem, the utility model is achieved by technical solution below:
A kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition, including heating room and setting are on the heating room
The vaporization chamber of side, the heating room is divided into uplink bed and down-flow fluidized bed using ECT, partition, the heating room and institute is provided in the vaporization chamber
It states to be added in vaporization chamber and forced circulation is carried out by the mixed working fluid that solid particle and liquid phase working fluid pure water form；
The partition top is equipped with solid particulate distributions plate, and the solid particulate distributions plate is described including being fixedly connected on
The side plate of partition and the mainboard for being vertically connected at the side plate top side, the mainboard is horizontally disposed and is located at the down-flow fluidized bed using ECT
Top；
The mainboard is semicircle plate body, and the mainboard is provided with three to four row's circular holes as solid particle passway, institute
State solid particle passway each row's Circularhole diameter is identical and the center of circle is uniformly distributed on the semi arch of same Radius, each circular hole of arranging
Diameter is radially gradually increased from inside to outside along the mainboard.
Preferably, the solid particle is polyformaldehyde particle, is the spheroidal of diameter 2.0-5.5mm, and density is
1390kg/m3；Particle loads are 0.5%-2.0%, circular flow 10.66-19.14m3/h。
Preferably, the height of the partition is 0.05-0.2m.
Preferably, the side plate is strip plate body, and the side plate is vertically connected on the mainboard straight line along lower part；Institute
The center of circle for stating the semicircle plate body of mainboard is overlapped with the top center point of the side plate.
Preferably, the centers such as each row's circular hole of the solid particle passway are away from setting.
Preferably, the diameter of the semicircle plate body of the mainboard is 250-280mm, is not opened in 40-50mm radius
Hole, rest part are provided with four row's circular holes as the solid particle passway, and the center of circle of four row's circular holes from inside to outside is set respectively
It sets on 48-53mm, 60-65mm, 85-90mm, 115-120mm radius place semi arch, diameter is respectively 7-9mm, 11-
13mm, 18-22mm, 22-26mm.
Preferably, the side plate has downwardly open card slot, described solid with fixation for being inserted into the partition top
Body distribution of particles plate.
The beneficial effects of the utility model are:
The utility model simple structure and convenient processing replaces pure water to carry out forcing to follow in evaporator by mixed working fluid
Ring, recirculating fluidized bed evaporator can play online anti-, scale removal and augmentation of heat transfer effect；And solid is installed on partition
Grain distribution grid, can effectively improve the distribution of particles of down-flow fluidized bed using ECT in the vertical two-tube-pass circular form fluidized-bed water gas gasifier with partition
Situation can be such that solid particle is evenly distributed in the tube bank of down-flow fluidized bed using ECT, the heating wall of shearing and collision each pipe of down-flow fluidized bed using ECT,
The boundary layer of flowing and heat transfer is destroyed, and then helps further to improve augmentation of heat transfer and anti-, scale removal effect.
Detailed description of the invention
Fig. 1 is the structural representation of the vertical two-tube-pass recirculating fluidized bed evaporator provided by the utility model with partition
Figure；
In Fig. 1: 1, circulating pump；2, particle collector；3, electromagnetic flowmeter；4, end socket internal partition；5, uplink bed；6, downlink
Bed；7, room is heated；8, vaporization chamber；9, partition；10, solid particulate distributions plate.
Fig. 2 is the structural schematic diagram of solid particulate distributions plate in Fig. 1；
In Fig. 2: 101, mainboard；102, side plate；103, solid particle passway.
Specific embodiment
For the summary of the invention, feature and effect that can further appreciate that the utility model, the following examples are hereby given, and cooperates
Detailed description are as follows for attached drawing:
As shown in Figure 1, present embodiment discloses a kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition, by heating
Room 7 and vaporization chamber 8 are constituted, and vaporization chamber 8 is located at the top of heating room 7, wherein heating room 7 can be divided by end socket internal partition 4 for uplink
Bed 5 and down-flow fluidized bed using ECT 6 is provided with partition 9 in vaporization chamber 8, and the uplink bed 5 that fluid flows through heating room 7 enters vaporization chamber 8, and is steaming
Partition 9 is crossed in hair room 8 to enter in the down-flow fluidized bed using ECT 6 of heating room 7.Wherein, the height of partition 9 is 0.05-0.2m.
It is operated under bring fouling and heat transfer property for a long time to solve the vertical two-tube-pass circular form evaporator with partition
The problem of drop, the utility model replace pure water in evaporator using the mixed working fluid of solid particle and liquid phase working fluid pure water composition
Carry out forced circulation.Wherein, solid particle is preferably polyformaldehyde particle, and polyformaldehyde particle is spheroidal, diameter 2.0-
5.5mm, density 1390kg/m3；Particle loads are 0.5%-2.0%, circular flow 10.66-19.14m3/ h, in the steaming
The minimum discharge for keeping polyformaldehyde particle ciculation fluidized in hair device is 10.66m3/ h, and when circular flow is higher than 19.14m3/h
When, it has a large amount of bubbles and enters in evaporator.The height of partition 9 is 0.15m in the present embodiment, and the particle of polyformaldehyde particle is added
Amount is 0.5%, and particle loads are the percentage of heap volume and liquid volume that particle is added.
Since solid particle is entered in uplink bed 5 after evenly mixing in end socket, thus its be distributed in uplink bed 5 compared with
Uniformly, particle is to enter in the farther away tube bank of partition 9 and in down-flow fluidized bed using ECT 6, it is necessary to there is biggish horizontal velocity,
Therefore there are more particles to enter in the closer tube bank of partition 9.The utility model devises a kind of solid particulate distributions plate
10, solid particulate distributions plate 10 is fixed on partition 9, and be located at the top of 6 side of down-flow fluidized bed using ECT in vaporization chamber 8, solid can be made
Grain is evenly distributed in down-flow fluidized bed using ECT 6.
As shown in Fig. 2, solid particulate distributions plate 10 includes mainboard 101 and side plate 102, mainboard 101 and side plate 102 are rectangular
It is fixed together.Mainboard 101 is semicircle plate body, and side plate 102 is strip plate body, and side plate 102 is vertically connected on mainboard
101 straight lines are along lower part.The center of circle of the semicircle plate body of mainboard 101 is overlapped with the central point at 102 top of side plate, and is located at evaporation
The center of room.Mainboard 101 is provided with three to four row's circular holes as solid particle passway 103, and the diameter of each row's circular hole is identical
And the center of circle is uniformly distributed on the semi arch of same Radius, each diameter for arranging circular hole is gradually increased from inside to outside along 101 radial direction of mainboard.Example
Such as, mainboard 101 is the semicircle plate body of diameter 260mm, and not aperture in 46mm radius, it is round that rest part is provided with four rows
Hole is separately positioned on 50mm, 65mm, 90mm, 117mm as solid particle passway 103, the center of circle of four row's circular holes from inside to outside
Where radius on semi arch, diameter is respectively 8mm, 12mm, 20mm, 24mm.Side plate 102 has the card slot of under shed, i.e. side
The longitudinal section of plate 102 is reverse U shape, and the card slot is for being plugged in 9 top of partition, with fixed solid distribution of particles plate 10.Solid
Distribution of particles plate 10 is installed on 9 top of partition by its side plate 102, while its mainboard 10 is horizontally disposed and is located in vaporization chamber 8
The top of 6 side of down-flow fluidized bed using ECT.
Generally, the semicircle plate body diameter of mainboard 101 is 250-280mm, not aperture in 40-50mm radius,
The center of circle of four row's circular holes from inside to outside is separately positioned on 48-53mm, 60-65mm, 85-90mm, semicircle where 115-120mm radius
On arc, diameter is respectively 7-9mm, 11-13mm, 18-22mm, 22-26mm.
Solid particle enters in vaporization chamber 8 by uplink bed 5 as a result, partition 9 is crossed, by solid particulate distributions plate
It is entered in down-flow fluidized bed using ECT 6 after 10 redistributions.When unguyed body distribution of particles plate 10, solid particle tend to enter distance every
In the close and tube bank close to 8 center of vaporization chamber of plate 9, therefore pass through the center of solid particulate distributions plate 10 not apertured and rest part
Solid particle channel 103 is set, and the Circularhole diameter in solid particle channel 103 is gradually increased from inside to outside along 101 radial direction of mainboard
Design, solid particle can be made to be evenly distributed in down-flow fluidized bed using ECT 6.
When work, circulating pump 1 is opened, liquid-solid two-phase is circulated, and solid particle can continually hit tube wall, stream
Body is entered from bottom to top in uplink bed 5, crosses partition 9, and by solid particulate distributions plate 10, solid particle is redistributed,
In the tube bank for uniformly flowing into down-flow fluidized bed using ECT 6.Circular flow is adjusted by frequency converter, passes through electromagnetic flowmeter batching cycle flow.
Circular flow has significant impact to the ciculation fluidized state of solid particle, and circular flow is 10.66-19.14m in experiment3/ h,
When circular flow changes within the above range, compared with unguyed body distribution of particles plate, the uniformity coefficient maximum of distribution can be mentioned
It is high by 90%.
Although being described above in conjunction with preferred embodiment of the attached drawing to the utility model, the utility model is not
It is confined to above-mentioned specific embodiment, the above mentioned embodiment is only schematical, is not restrictive, ability
The those of ordinary skill in domain is not departing from present inventive concept and scope of the claimed protection under the enlightenment of the utility model
In the case of, the specific transformation of many forms can also be made, these are belonged within the protection scope of the utility model.
Claims (3)
1. a kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition, including heating room and setting are above the heating room
Vaporization chamber, the heating room is divided into uplink bed and down-flow fluidized bed using ECT, is provided with partition in the vaporization chamber, which is characterized in that described
It is added in heating room and the vaporization chamber and forced circulation is carried out by the mixed working fluid that solid particle and liquid phase working fluid pure water form；
The partition top is equipped with solid particulate distributions plate, and the solid particulate distributions plate includes being fixedly connected on the partition
Side plate and be vertically connected at the mainboard of the side plate top side, the mainboard is horizontally disposed and is located on the down-flow fluidized bed using ECT
Side；
The mainboard is semicircle plate body, and the mainboard is provided with three to four row's circular holes as solid particle passway, described solid
Each row's Circularhole diameter of body particle path mouth is identical and the center of circle is uniformly distributed on the semi arch of same Radius, each diameter for arranging circular hole
It is radially gradually increased from inside to outside along the mainboard；
The solid particle is polyformaldehyde particle, is the spheroidal of diameter 2.0-5.5mm, density 1390kg/m3；Particle adds
Entering amount is 0.5%-2.0%, circular flow 10.66-19.14m3/h；
The height of the partition is 0.05-0.2m；
The centers such as each row's circular hole of the solid particle passway are away from setting；
The diameter of the semicircle plate body of the mainboard is 250-280mm, not aperture in 40-50mm radius, rest part
Four row's circular holes are provided with as the solid particle passway, the center of circle of four row's circular holes from inside to outside is separately positioned on 48-53mm,
Where 60-65mm, 85-90mm, 115-120mm radius on semi arch, diameter is respectively 7-9mm, 11-13mm, 18-22mm,
22-26mm。
2. a kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition according to claim 1, which is characterized in that institute
Stating side plate is strip plate body, and the side plate is vertically connected on the mainboard straight line along lower part；The semicircular plate of the mainboard
The center of circle of body is overlapped with the top center point of the side plate.
3. a kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition according to claim 1, which is characterized in that institute
Side plate is stated with downwardly open card slot, for being inserted into the partition top, with the fixation solid particulate distributions plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820263831.1U CN208582988U (en) | 2018-02-23 | 2018-02-23 | A kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820263831.1U CN208582988U (en) | 2018-02-23 | 2018-02-23 | A kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208582988U true CN208582988U (en) | 2019-03-08 |
Family
ID=65531714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820263831.1U Expired - Fee Related CN208582988U (en) | 2018-02-23 | 2018-02-23 | A kind of vertical two-tube-pass recirculating fluidized bed evaporator with partition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208582988U (en) |
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2018
- 2018-02-23 CN CN201820263831.1U patent/CN208582988U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190308 Termination date: 20210223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |