CN108211391A - A kind of two-tube-pass circular form evaporator with partition board - Google Patents
A kind of two-tube-pass circular form evaporator with partition board Download PDFInfo
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- CN108211391A CN108211391A CN201810155111.8A CN201810155111A CN108211391A CN 108211391 A CN108211391 A CN 108211391A CN 201810155111 A CN201810155111 A CN 201810155111A CN 108211391 A CN108211391 A CN 108211391A
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- partition board
- mainboard
- tube
- trapezoidal
- circular form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/06—Evaporators with vertical tubes
- B01D1/12—Evaporators with vertical tubes and forced circulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention belongs to vaporizer technology fields, disclose a kind of two-tube-pass circular form evaporator with partition board, including heating room and vaporization chamber, heating room is divided into uplink bed and down-flow fluidized bed using ECT, partition board is provided in vaporization chamber, heats the mixed working fluid progress forced circulation for adding in room and vaporization chamber and being made of solid particle and liquid phase working fluid pure water；Partition board top is equipped with solid particulate distributions plate, and solid particulate distributions plate includes being fixedly connected on the side plate of partition board and the mainboard being vertically connected at the top of side plate, and mainboard is horizontally disposed with and above down-flow fluidized bed using ECT, and the flat shape of mainboard is trapezoidal.It is the configuration of the present invention is simple, easy to process, 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 invention belongs to vaporizer technology fields, are to be applied to the two-tube-pass circular form evaporator with partition board specifically
Augmentation of heat transfer and anti-, descalling technique.
Background technology
Vertical two-tube-pass circular form evaporator with partition board is commonly utilized in the industrial productions such as akali sulphide.During 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 declines, and rate of heat transfer reduces, and heat transmission equipment needs periodically carry out shut-down cleaning, and it is serious to result in production capacity
Decline.At present, anti-, descaling method mainly includes physical method and chemical method used by the type evaporator, such as：Using height
Hydraulic giant cleaning and chemical scale-inhibitor etc. are pressed, but these methods influence production, increase operating cost and pollute ring there is parking
The shortcomings of border, and cannot fundamentally solve the scale problems of equipment.Fluidized bed heat exchanger antiscale power-saving technology is by fluid bed skill
Art and heat transfer process are combined, 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, reduces heat transfer resistance, improves heat transfer efficiency, while can effectively extend the induction of fouling
Phase has the effect of apparent 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, can realize the online augmentation of heat transfer of heat transmission equipment and anti-, scale removal.It is fluidizing
In the implementation process of bed heat exchange antiscale power-saving technology, distribution of the solid particle in tube bank will influence 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.
Invention content
The present invention is to solve the two-tube-pass circular form evaporator with partition board in long-term use heat transfer property decline and
The technical issues of wall surface fouling, provides a kind of two-tube-pass circular form evaporator with partition board, and fluidized bed heat exchanger antiscale is energy saving
Technology is applied in the two-tube-pass circular form evaporator with partition board, while for the side of the uplink bed in the fluidized-bed water gas gasifier
Distribution of particles is than more uniform, and the non-uniform problem of distribution of particles in down-flow fluidized bed using ECT, by the way that solid particulate distributions plate is set to improve
The uniformity of distribution of particles, so as to achieve the effect that good online strengthening heat transfer and anti-, scale removal.
In order to solve the above-mentioned technical problem, the present invention is achieved by following technical solution：
A kind of two-tube-pass circular form evaporator with partition board, including heating room and the evaporation being arranged on above the heating room
Room, the heating room are divided into uplink bed and down-flow fluidized bed using ECT, are provided with partition board in the vaporization chamber, which is characterized in that the heating room
Forced circulation is carried out by the mixed working fluid that solid particle and liquid phase working fluid pure water form with being added in the vaporization chamber；
The partition board top is equipped with solid particulate distributions plate, and the solid particulate distributions plate includes being fixedly connected on described
The side plate of partition board and the mainboard for being vertically connected at the side plate top side, the mainboard are horizontally disposed with and positioned at the down-flow fluidized bed using ECTs
Top, the flat shape of the mainboard is trapezoidal.
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 board is 0.05-0.2m.
Preferably, the side plate is strip plate body, and the side plate is vertically connected on the trapezoidal long side edge of the mainboard
Lower part, and the trapezoidal long side midpoint of the mainboard is overlapped with the top center point of the side plate.
Preferably, the trapezoidal long side of the mainboard is 190-195mm, and trapezoidal short side is 125-130mm, trapezoidal a height of 80-
85mm。
Preferably, the trapezoidal long side of the mainboard is 268-273mm, and trapezoidal short side is 215-220mm, trapezoidal a height of 80-
85mm。
Preferably, the side plate has downwardly open card slot, described solid with fixation for being inserted into the partition board top
Body distribution of particles plate.
The beneficial effects of the invention are as follows：
It is the configuration of the present invention is simple, easy to process, forced circulation is carried out instead of pure water in evaporator by mixed working fluid, is followed
Ring fluidized-bed water gas gasifier can play the effect of online anti-, scale removal and augmentation of heat transfer；And solid particle point is installed on partition board
Fabric swatch can effectively improve the distribution of particles situation of down-flow fluidized bed using ECT in the two-tube-pass circular form evaporator with partition board, can make solid
Body particle is evenly distributed in the tube bank of down-flow fluidized bed using ECT, and the heating wall of shearing and collision each pipe of down-flow fluidized bed using ECT destroys flowing and passes
The boundary layer of heat, and then help further to improve augmentation of heat transfer and anti-, scale removal effect.
Description of the drawings
Fig. 1 is the structure diagram of the two-tube-pass circular form evaporator provided by the present invention with partition board；
In Fig. 1：1st, circulating pump；2nd, particle collector；3rd, electromagnetic flowmeter；4th, end socket internal partition；5th, uplink bed；6th, downlink
Bed；7th, room is heated；8th, vaporization chamber；9th, partition board；10th, solid particulate distributions plate.
Fig. 2 is the structure diagram of solid particulate distributions plate form one in Fig. 1；
Fig. 3 is the structure diagram of solid particulate distributions plate form two in Fig. 1；
In Fig. 2 and Fig. 3：101st, mainboard；102nd, side plate.
Specific embodiment
For that can further appreciate that invention content, feature and the effect of the present invention, the following examples are hereby given, and coordinates attached drawing
Detailed description are as follows：
As shown in Figure 1, present embodiment discloses a kind of two-tube-pass circular form evaporator with partition board, by heating room 7 and steaming
Hair room 8 form, vaporization chamber 8 be located at heating room 7 top, wherein heating room 7 can be divided by end socket internal partition 4 be uplink bed 5 and under
Row bed 6, partition board 9 is provided in vaporization chamber 8, and the uplink bed 5 of the heated room 7 of fluid stream enters vaporization chamber 8, and in vaporization chamber 8
Partition board 9 is crossed to enter in the down-flow fluidized bed using ECT 6 of heating room 7.Wherein, the height of partition board 9 is 0.05-0.2m.
Operate what the fouling brought and heat transfer property declined for a long time to solve the two-tube-pass circular form evaporator with partition board
Problem, the present invention are forced with the mixed working fluid that liquid phase working fluid pure water forms using solid particle instead of pure water in evaporator
Cycle.Wherein, solid particle is preferably polyformaldehyde particle, and polyformaldehyde particle is spheroidal, a diameter of 2.0-5.5mm, and density is
1390kg/m3；Particle loads are 0.5%-2.0%, circular flow 10.66-19.14m3/ h makes poly- first in the evaporator
Aldehyde particle can be ciculation fluidized minimum discharge be 10.66m3/ h, and when circular flow is higher than 19.14m3During/h, a large amount of gas are had
Bubble enters in evaporator.The particle loads of polyformaldehyde particle are 0.5% in the present embodiment, and particle loads are to add in particle
Heap volume and liquid volume percentage.
Due to solid particle in end socket through uniformly mixing after enter in uplink bed 5, therefore its be distributed in uplink bed 5 compared with
Uniformly, particle is to enter in the tube bank farther out of partition board 9 and in down-flow fluidized bed using ECT 6, it is necessary to there is larger horizontal velocity,
Therefore there are more particles to enter in the tube bank nearer apart from partition board 9.The present invention devises a kind of solid particulate distributions plate 10, will
Solid particulate distributions plate 10 is fixed on partition board 9, and positioned at the top of 6 side of down-flow fluidized bed using ECT in vaporization chamber 8, can make solid particle under
Row bed 6 is evenly distributed.
As shown in Figures 2 and 3, solid particulate distributions plate 10 includes mainboard 101 and side plate 102, mainboard 101 and side plate 102
At right angles it is fixed together.Mainboard 101 is trapezoidal plate body (i.e. the flat shape of mainboard 101 is trapezoidal), and side plate 102 is length
Bar shaped plate body, side plate 102 are vertically connected on 101 trapezoidal long side edge lower part of mainboard.The trapezoidal long side midpoint of mainboard 101 and side plate
The central point at 102 tops overlaps, and positioned at the center of vaporization chamber.Side plate 102 has the card slot of under shed, i.e., side plate 102 is vertical
Section is reverse U shape, and the card slot is for being plugged in 9 top of partition board, with fixed solid distribution of particles plate 10.Solid particulate distributions plate
10 are installed on 9 top of partition board, while its mainboard 101 is horizontally disposed and is located at down-flow fluidized bed using ECT 6 one in vaporization chamber 8 by its side plate 102
The top of side.
Usually, there are two types of situations for corresponding different Optimal technique process, the height of partition board 9 and the shape of mainboard 101.Such as
Shown in Fig. 2, the height of partition board 9 is 0.1m in form one, and the trapezoidal long side of mainboard 101 is 190-195mm, and trapezoidal short side is 125-
130mm, trapezoidal a height of 80-85.As shown in figure 3, the height of partition board 9 is 0.15m in form two, the trapezoidal long side of mainboard 101 is
268-273mm, trapezoidal short side are 215-220mm, trapezoidal a height of 80-85mm.Above-mentioned size can ensure that solid particle cannot be straight
It connects and enters in the tube bank nearer apart from partition board 9 and larger distance must be moved, solid particle is uniform in promotion down-flow fluidized bed using ECT 6
Distribution.
Solid particle is entered by uplink bed 5 in vaporization chamber 8 as a result, crosses partition board 9, by solid particulate distributions plate
It is entered in down-flow fluidized bed using ECT 6 after 10 redistributions.During unguyed body distribution of particles plate 10, solid particle tend to enter distance every
In the tube bank near and close 8 center of vaporization chamber of plate 9, therefore down-flow fluidized bed using ECT 6 in vaporization chamber 8 is set to by solid particulate distributions plate 10
The top of side, and mainboard 101 is in be designed by the trapezium structure that center becomes narrow gradually outward, can make solid particle in down-flow fluidized bed using ECT
6 are evenly distributed.
During 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 board 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 carry
High 38.7%-68%.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited in upper
The specific embodiment stated, above-mentioned specific embodiment is only schematical, be not it is restricted, this field it is common
Technical staff is not departing from present inventive concept and scope of the claimed protection, may be used also under the enlightenment of the present invention
By make it is many in the form of specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (7)
1. a kind of two-tube-pass circular form evaporator with partition board, including heating room and the evaporation being arranged on above the heating room
Room, the heating room are divided into uplink bed and down-flow fluidized bed using ECT, are provided with partition board in the vaporization chamber, which is characterized in that the heating room
Forced circulation is carried out by the mixed working fluid that solid particle and liquid phase working fluid pure water form with being added in the vaporization chamber；
The partition board top is equipped with solid particulate distributions plate, and the solid particulate distributions plate includes being fixedly connected on the partition board
Side plate and be vertically connected at the mainboard of the side plate top side, the mainboard is horizontally disposed with and on the down-flow fluidized bed using ECT
Side, the flat shape of the mainboard is trapezoidal.
A kind of 2. two-tube-pass circular form evaporator with partition board according to claim 1, which is characterized in that the solid
Grain is polyformaldehyde particle, for the spheroidal of diameter 2.0-5.5mm, density 1390kg/m3；Particle loads are 0.5%-
2.0%, circular flow 10.66-19.14m3/h。
3. a kind of two-tube-pass circular form evaporator with partition board according to claim 1, which is characterized in that the partition board
Highly it is 0.05-0.2m.
4. a kind of two-tube-pass circular form evaporator with partition board according to claim 1, which is characterized in that the side plate is
Strip plate body, the side plate are vertically connected on the trapezoidal long side edge lower part of the mainboard, and the trapezoidal long side of the mainboard
Midpoint is overlapped with the top center point of the side plate.
5. a kind of two-tube-pass circular form evaporator with partition board according to claim 1, which is characterized in that the mainboard
Trapezoidal long side is 190-195mm, and trapezoidal short side is 125-130mm, trapezoidal a height of 80-85mm.
6. a kind of two-tube-pass circular form evaporator with partition board according to claim 1, which is characterized in that the mainboard
Trapezoidal long side is 268-273mm, and trapezoidal short side is 215-220mm, trapezoidal a height of 80-85mm.
A kind of 7. two-tube-pass circular form evaporator with partition board according to claim 1, which is characterized in that the side plate tool
There is downwardly open card slot, for being inserted into the partition board top, with the fixation solid particulate distributions plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155111.8A CN108211391B (en) | 2018-02-23 | 2018-02-23 | Double-tube pass circulating evaporator with partition plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155111.8A CN108211391B (en) | 2018-02-23 | 2018-02-23 | Double-tube pass circulating evaporator with partition plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108211391A true CN108211391A (en) | 2018-06-29 |
| CN108211391B CN108211391B (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810155111.8A Active CN108211391B (en) | 2018-02-23 | 2018-02-23 | Double-tube pass circulating evaporator with partition plate |
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| Country | Link |
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| CN (1) | CN108211391B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617505A (en) * | 2020-04-16 | 2020-09-04 | 天津天大清能环境工程有限公司 | Mechanical auxiliary self-cleaning evaporation concentrator and evaporation concentration method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205667848U (en) * | 2016-05-20 | 2016-11-02 | 北方民族大学 | Solid particulate distributions device |
-
2018
- 2018-02-23 CN CN201810155111.8A patent/CN108211391B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205667848U (en) * | 2016-05-20 | 2016-11-02 | 北方民族大学 | Solid particulate distributions device |
Non-Patent Citations (2)
| Title |
|---|
| NA LI等: "Effects of particle size on the particle distribution of a two-pass circulating fluidized bed evaporator with a baffle", 《POWDER TECHNOLOGY》 * |
| 袁达: "变孔径颗粒分布板的颗粒分布性能实验研究", 《河南工业大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617505A (en) * | 2020-04-16 | 2020-09-04 | 天津天大清能环境工程有限公司 | Mechanical auxiliary self-cleaning evaporation concentrator and evaporation concentration method |
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| Publication number | Publication date |
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| CN108211391B (en) | 2020-12-29 |
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