CN116839391A - Vertical evaporator - Google Patents
Vertical evaporator Download PDFInfo
- Publication number
- CN116839391A CN116839391A CN202310925850.1A CN202310925850A CN116839391A CN 116839391 A CN116839391 A CN 116839391A CN 202310925850 A CN202310925850 A CN 202310925850A CN 116839391 A CN116839391 A CN 116839391A
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- China
- Prior art keywords
- tube
- heat exchange
- connecting pipe
- main body
- body shell
- Prior art date
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Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003546 flue gas Substances 0.000 claims abstract description 41
- 230000001174 ascending effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 14
- 230000008602 contraction Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 10
- 238000012546 transfer Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
Abstract
The application provides a vertical evaporator, which comprises a main body shell which is penetrated up and down, a heat exchange tube arranged in the main body shell, and a connecting tube fixedly arranged on the main body shell, wherein a vertical flue gas channel is arranged in the main body shell, a replacement heat tube is arranged in the flue gas channel, the upper end of the heat exchange tube is fixedly connected with the connecting tube, and the lower end of the heat tube is a free end. When the temperature of the waste flue gas fluctuates, the heat exchange tube can bear fatigue stress generated by heat expansion and cold contraction, so that the phenomenon that the welded part of the pipeline and the inner wall of the evaporator is broken due to repeated heat expansion and cold contraction of the heat exchange tube is avoided, and the service life of the heat exchange tube is prolonged while the heat exchange efficiency is ensured.
Description
Technical Field
The application belongs to the technical field of heat exchange, relates to an evaporator for high-temperature metallurgical waste flue gas treatment, and particularly relates to a vertical evaporator.
Background
At present, most of domestic waste flue gas in ferrous metallurgy industry has the characteristics of high pressure, high temperature, corrosive sulfur, acid and other substances, large dust content, easy explosion and the like, and the potential safety hazard can be eliminated only by cooling before entering a dust removing device, so that the waste flue gas is safe and stably operated for a long period. The temperature of the high-temperature metallurgical waste flue gas is generally 800-1000 ℃, and the highest temperature can reach 1600 ℃, and as the temperature fluctuation range of the high-temperature metallurgical waste flue gas is larger, the repeated expansion and contraction of the heat exchange tube can be caused, the welding part of the heat exchange tube and the inner wall of the evaporator repeatedly stretches and deforms, the evaporator is easily damaged, and particularly the welding part of the heat exchange tube and the inner wall of the evaporator is easily broken.
Through searching, the prior art in the following similar technical fields is found: the industrial waste gas waste heat recovery heat exchange device (CN 103868377A) is different from the core technical problem to be solved by the patent application, and the technical means adopted are different, so that the technical effects are different.
Disclosure of Invention
In order to solve the above problems in the prior art, the present application provides a vertical evaporator.
A vertical evaporator, characterized in that: the heat exchange tube comprises a main body shell which is penetrated up and down, a heat exchange tube arranged in the main body shell, a connecting tube fixedly arranged on the main body shell, a vertical flue gas channel arranged in the main body shell, a replacement heat tube arranged in the flue gas channel, and a connecting tube fixedly connected with the upper end of the heat exchange tube, wherein the lower end of the heat tube is a free end.
Through adopting above-mentioned technical scheme, the useless flue gas of pyrometallurgy gets into main part shell by the flue gas entry of evaporimeter bottom, flow upwards vertically through the flue gas passageway in the main part shell, flow by the flue gas export at top at last, be provided with many vertical heat exchange tubes in the main part shell, the pipe heat pipe direction is unanimous with flue gas flow direction, reduce the heat exchange tube and receive the impact of flue gas, the great deflection of heat exchange tube expend with heat shrinkage is in vertical orientation, the heat exchange tube is connected with evaporimeter inner wall one end, the mode that the other end is not connected, the free end of heat exchange tube lower extreme obtains flexible space like this, the fracture that the repeated atress of welding position caused has effectively been avoided.
Preferably, the heat exchange tubes are a plurality of heat exchange tubes which are transversely and longitudinally spaced, and the upper ends of the plurality of heat exchange tubes which are transversely and side by side are connected to the same connecting tube; the connecting pipes are longitudinally arranged at intervals.
Through adopting above-mentioned technical scheme, a plurality of heat transfer pipes of horizontal vertical interval set up inside the evaporimeter at even interval, guarantee the heat transfer efficiency to the high temperature metallurgy waste flue gas that gets into each position in the evaporimeter, effectual heat transfer treatment.
Preferably, the heat exchange tube comprises an inner tube and an outer tube, the inner tube is coaxially arranged inside the outer tube, the lower end of the inner tube is communicated with the outer tube, the inner tube is not communicated with the upper end of the outer tube, the upper end of the inner tube is connected with an input connecting tube of a low-temperature working medium, and the upper end of the outer tube is connected with an output connecting tube of a high-temperature working medium.
Through adopting above-mentioned technical scheme, the heat exchange tube is the double-deck tubular construction of bottom intercommunication, and low temperature working medium gets into the intercommunication from the inner tube to the outer tube, and the outer tube passes through outer wall and flue gas heat transfer, and the working medium temperature rise after being heated is by liquid conversion to gaseous state, exports from the outer tube, and the smooth and easy stability of the flow direction of working medium is guaranteed to the essence of inner tube and outer tube, reaches better heat transfer effect.
Preferably, two ends of the connecting pipe are respectively connected with the ascending header and the descending header.
Through adopting above-mentioned technical scheme, the sinking header is used for depositing and conveying the lower liquid working medium of temperature, carries liquid working medium for the heat exchange tube, flows to the heat exchange tube bottom through the inner tube that the inlayer connecting tube got into the heat exchange tube, and the working medium in the heat exchange tube is heated and is converted into the gaseous state and rise through the outer tube, carries the gas working medium of high temperature to the rising header, and a plurality of connecting tubes are connected respectively to rising header and falling header, and centralized processing efficiency is higher.
Preferably, the connecting pipe comprises an outer connecting pipe and an inner connecting pipe coaxially arranged in the outer connecting pipe, one end of the inner connecting pipe in the outer connecting pipe is closed, and the other end of the inner connecting pipe extends to the outer connecting pipe and is connected with a descending header; one end of the outer connecting pipe close to the descending header is closed, and the other end of the outer connecting pipe is connected with the ascending header arranged outside the main body shell; the inner layer connecting pipe is communicated with the inner pipe of the heat exchange pipe, and the outer layer connecting pipe is communicated with the outer pipe of the heat exchange pipe.
Through adopting above-mentioned technical scheme, the connecting tube divide into inside and outside double-deck tube structure, connects the inside and outside double-deck tube of heat exchange tube respectively, mutually support, makes high temperature working medium and low temperature working medium flow direction stable smooth and easy, guarantees work efficiency.
Preferably, the lower ends of the heat exchange tubes are provided with end covers, the thickness of the end covers is larger than the wall thickness of the outer walls of the heat exchange tubes, and the end covers are of spherical structures.
Through adopting above-mentioned technical scheme, the lower extreme of heat exchange tube is the free end, gets into the waste flue gas of pyrometallurgical of main part shell and can strike heat exchange tube lower extreme face at first, in order to prevent heat exchange tube damage, adopts the heat-seal technology of heating, spinning to form the head, makes head thickness increase, has stronger impact resistance, sets up the head into spherical structure moreover and forms the water conservancy diversion effect to the waste flue gas of pyrometallurgical, alleviates the impact force.
Preferably, a sleeve is coaxially arranged outside the heat exchange tube, and fins are arranged outside the sleeve.
Through adopting above-mentioned technical scheme, the sleeve pipe that is provided with the fin outside the heat exchange tube, utilize fin and flue gas area of contact to increase heat transfer area, solved the heat exchange tube direction and the same problem that heat transfer area is little of flue gas direction.
Preferably, the fins are continuously arranged spiral fins.
Through adopting above-mentioned technical scheme, spiral fin's structure is continuous mild cambered surface structure, and when guaranteeing heat transfer efficiency like this, the lime-ash that is mingled with in the flue gas subsides along with the temperature reduces, and the lime-ash that drops on spiral fin is difficult for the deposition along fin cambered surface landing, and the deposition too much can influence heat transfer structure's efficiency.
Preferably, a space is reserved between the lower end of the heat exchange tube and the lower end of the main body shell.
Through adopting above-mentioned technical scheme, the distance in this clearance is greater than the biggest thermal expansion's that heat exchange tube allows the operating temperature within range deformation length that produces, guarantees when the heat exchange tube is heated extension deformation to big length, also can not push up on the inner wall of the structure of bottom, effectively prevents damage heat exchange tube.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the sleeve type evaporator provided by the application is used as an industrial waste flue gas cooling device, and when the waste flue gas temperature fluctuates, the heat exchange tube can bear fatigue stress generated by expansion and contraction, and can bear scouring of large-particle heavy metal dust.
2. According to the technical scheme, through the arrangement design of the heat exchange tube and the appearance of the evaporator, the problem that the heat exchange tube inside the evaporator is broken at the welding position of the pipeline and the inner wall of the evaporator due to repeated expansion caused by heat and contraction caused by cold after high-temperature flue gas enters the evaporator and when the flue gas with different temperatures is processed in batches is solved, and the service life of the heat exchange tube is prolonged.
3. The vertical evaporator adopts the sleeve structure to arrange the spiral fins, so that good heat exchange efficiency is ensured, and the temperature of flue gas is reduced by rapid heat exchange, thereby avoiding overlarge internal pressure, and the outer wall of the evaporator has good sealing effect so as to ensure that waste flue gas of an internal inflammable and explosive medium cannot leak.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of the internal structure of the present application.
Fig. 2 is an enlarged schematic view of part a in fig. 1.
Fig. 3 is a partially enlarged schematic view of the portion B in fig. 1.
Fig. 4 is a schematic view of the structure of the sleeve in the present application.
Fig. 5 is a right side view of the internal structure of fig. 1.
Reference numerals: 1. descending a header; 2. an inner layer connecting pipe; 3. a main body housing; 4. a heat preservation layer; 5. an outer layer connecting pipe; 6. ascending a header; 7. a heat exchange tube; 701. an inner tube; 702. an outer tube; 703. a seal head; 8. a sleeve; 801. and (3) a fin.
Detailed Description
The application will be described in further detail with reference to the drawings and the detailed description. The embodiments of the application have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the application in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, and to enable others of ordinary skill in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.
The utility model provides a vertical evaporator, includes main body shell 3, heat exchange tube 7, connecting tube and collection case, is provided with the flue gas passageway in the main body shell 3, and the flue gas passageway embeds has heat exchange tube 7, and heat exchange tube 7 passes through the external collection case of connecting tube, and heat exchange working medium passes through heat transfer and changes the form repeatedly, circulates in collection case and heat exchange tube 7.
The heat preservation layer 4 is uniformly arranged on the inner wall of the main body shell, so that heat of high-temperature smoke in the main body shell is prevented from losing to the outside of the main body shell, and the main body shell is protected from being directly impacted by the smoke.
The main body shell 3 is of a cylindrical structure which penetrates up and down, a smoke inlet is arranged at the bottom of the main body shell 3, a smoke outlet is arranged at the top of the main body shell 3, and a smoke channel in the main body shell 3 is vertically arranged; the high-temperature metallurgical waste flue gas enters the main body shell 3 from a flue gas inlet at the bottom of the evaporator, flows vertically upwards and finally flows out from a flue gas outlet at the top; the temperature and the pressure are reduced in the rising process of the metallurgical waste smoke at high temperature and high pressure, ash residues mixed in the smoke can be separated from the smoke to sink, and most ash residues fall back to the bottom to be cleaned and discharged periodically;
a plurality of vertical heat exchange tubes 7 are arranged in the main body shell 3, the arrangement direction of the heat exchange tubes is consistent with the flow direction of the smoke, and the impact of the heat exchange tubes 7 by the smoke is reduced;
the upper end of the heat exchange tube 7 is respectively connected to a connecting tube, the connecting tube is fixedly arranged on the upper part of the main body shell 3, two ends of the connecting tube extend to the outer part of the main body shell 3 and are respectively externally connected with a header, the headers are arranged on the outer side of the main body shell 3, the headers are externally connected with air bags (structures of the air bags are not shown in the drawing), the air bags can be arranged above the main body shell 3, the air bags are used for storing working media, collecting high-temperature gaseous working media, separating gas from liquid after heat exchange, and delivering the working media after cooling and liquefying back to the evaporator for recycling. The connecting pipes are fixedly arranged on the upper part of the main body shell 3, the heat exchange temperature of the flue gas flowing to the upper part of the main body shell 3 is greatly reduced through the heat exchange pipes 7, the pressure is reduced, the impact on the connecting pipes is small, the damage is not easy to be caused, and the flue gas flows out from a neutral position between the connecting pipes.
The heat exchange tube 7 lower extreme all is provided with head 703, and heat exchange tube 7 lower extreme is confined free end, because heat expansion and cold shrinkage of heat exchange tube 7 produce on the length direction, be connected through heat exchange tube 7 and evaporimeter inner wall one end, the mode that the other end was not connected, the free end of heat exchange tube 7 can stretch out and draw back, has effectively avoided the broken phenomenon emergence of double-end connection messenger junction after heat exchange tube 7 stretches out and draws back many times.
A plurality of connecting pipes which are arranged in the horizontal direction are arranged at the upper part of the main body shell 3, and the intervals among the connecting pipes are the same; the lower end of each connecting pipe is connected with a plurality of heat exchange pipes 7, and the intervals among the heat exchange pipes 7 are the same.
The lower end head 703 of the heat exchange tube 7 is spaced from the lower end of the main body casing 3 by a distance greater than the maximum thermal expansion length of the heat exchange tube 7 within the allowable operating temperature range. The upper end of the heat exchange tube 7 is relatively fixed with the position of the main body shell 3, the lower end of the heat exchange tube 7 is a free end, one end of the heat exchange tube 7 is fixedly connected, and one end of the heat exchange tube 7 is in telescopic deformation.
The connecting pipe adopted in the embodiment comprises a double-layer structure of an inner connecting pipe 2 and an outer connecting pipe 5, wherein the inner connecting pipe 2 is coaxially arranged inside the outer connecting pipe 5, one end of the inner connecting pipe 2 inside the outer connecting pipe 5 is closed, the other end of the inner connecting pipe 2 extends to the outside of the outer connecting pipe 5,
the inner connecting pipe 2 is connected with a descending header 1 arranged outside the main body shell 3, and liquid working media with lower temperature are stored and conveyed in the descending header 1;
one end of the outer connecting pipe 5 close to the descending header 1 is closed, the other end of the outer connecting pipe 5 is connected with the ascending header 6 arranged outside the main body shell 3, and the ascending header 6 collects and conveys gaseous working media with higher temperature;
the descending header 1 and the ascending header 6 are both cylindrical structures arranged in the horizontal direction;
the heat exchange tube 7 comprises an inner tube 701 and an outer tube 702 which are in a double-layer structure, the inner tube 701 of the heat exchange tube 7 is coaxially arranged inside the outer tube 702 of the heat exchange tube 7, the lower end of the inner tube 701 is communicated with the outer tube 702, the upper end of the inner tube 701 is connected with the inner connecting tube 2, the upper end of the outer tube 702 is communicated with the outer connecting tube 5, and the upper ends of the inner tube 701 and the outer tube 702 are not communicated with each other; the cooler liquid working medium in the descending header 1 enters the inner pipe 701 of the heat exchange pipe 7 through the inner connecting pipe 2 and flows to the bottom of the heat exchange pipe 7, the working medium in the heat exchange pipe 7 is heated and then converted into gas, and the gas rises through the outer pipe 702, so that the high-temperature gas working medium is conveyed to the ascending header 6. The inner diameter of the inner tube 701 is small, and the working fluid falls from the center to form a flow direction diffusing to the outer periphery, and the gas working fluid rises from the outer side of the inner tube 701.
The metallurgical waste flue gas with high temperature and high pressure can directly impact the bottom of the heat exchange tube 7 after entering from the bottom of the evaporator, in order to enhance the impact resistance of the heat exchange tube 7, the bottom end socket 703 of the outer tube 702 of the heat exchange tube 7 is arranged to be of an arc structure, and the end socket 703 adopts a thickened structure. The seal head 703 is formed at the lower end of the outer tube 702 by adopting a heat sealing process of heating and spinning, so that the thickness of the seal head 703 is larger than the wall thickness of the tube, and the seal head has stronger impact resistance.
The sleeve 8 is coaxially arranged outside the heat exchange tube 7, the fins 801 are arranged outside the sleeve 8, the heat exchange area of the heat exchange tube 7 in contact with flue gas is increased, the heat exchange efficiency is improved, the side fins 801 of the embodiment adopt a spiral structure surrounding the outer wall of the sleeve 8, the fins 801 are radially and vertically arranged on the sleeve 8 to increase the contact area, the continuous fins 801 are of continuous cambered surface structures, and ash slag on the spiral fins 801 slides along the cambered surfaces of the fins 801 to prevent ash accumulation while ensuring the heat exchange efficiency.
The lower end of the sleeve 8 in this embodiment is a through hole, and the seal head 703 of the heat exchange tube 7 extends out of the lower end of the sleeve 8.
Example 2
Two or more groups of boxes are arranged on the outer side of the upper part of the shell main body, each group of box heads comprises an ascending box 6 and a descending box 1, the two groups of boxes are arranged in a staggered manner up and down, the two groups of boxes are respectively connected with a plurality of connecting pipes, the connecting pipes connected with the upper layer of boxes and the connecting pipes connected with the lower layer of boxes are arranged at intervals in sequence, and therefore adjacent connecting pipes on the shell of the main body are arranged in a staggered manner up and down in sequence;
each connecting pipe is connected with a plurality of heat exchange pipes 7, the upper end positions of all the heat exchange pipes 7 are set according to the positions of the connecting pipes, the space between the lower ends of the heat exchange pipes 7 and the lower end of the main body shell 3 is the same in size, and the space between the lower end seal head 703 of the heat exchange pipe 7 and the lower end of the main body shell 3 is larger than the maximum thermal expansion length generated in the allowable operation temperature range of the heat exchange pipes 7, so that the heat exchange pipes 7 are prevented from being damaged.
Example 3
The lower extreme of every sleeve pipe 8 all is provided with head 703, and sleeve pipe 8 head 703 adopts the thickening structure, and sleeve pipe 8 head 703 position further protects heat exchange tube 7 head 703, separates the direct impact heat exchange tube 7 of pyrometallurgical waste flue gas, and sleeve pipe 8 head 703 also is provided with spherical structure.
Example 4
Other forms of fin 801 structure of the sleeve 8 are selected, such as sheet-shaped structure fins 801 which are arranged continuously, in a staggered manner in sections or in an array manner, and the fins 801 of the sheet-shaped structure can be arranged in a vertical direction or provided with an inclined angle with the vertical direction so as to facilitate ash falling.
The described embodiments are only some embodiments, but not all embodiments, of the present application. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present application without the inventive step, are intended to be within the scope of the present application. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (9)
1. A vertical evaporator, characterized in that: the heat exchange tube comprises a main body shell (3) which is penetrated up and down, a heat exchange tube (7) which is arranged in the main body shell (3), a connecting tube which is fixedly arranged on the main body shell (3), a vertical flue gas channel which is internally provided with a replacement heat tube (7) and the upper end of which is fixedly connected with the connecting tube, and the lower end of which is a free end, are arranged in the flue gas channel.
2. The vertical evaporator according to claim 1, wherein: the heat exchange tubes (7) are a plurality of heat exchange tubes (7) which are transversely and longitudinally spaced, and the upper ends of the plurality of heat exchange tubes (7) which are transversely arranged side by side are connected to the same connecting tube; the connecting pipes are longitudinally arranged at intervals.
3. The vertical evaporator according to claim 1, wherein: the heat exchange tube (7) comprises an inner tube (701) and an outer tube (702), the inner tube (701) is coaxially arranged inside the outer tube (702), the lower end of the inner tube (701) is communicated with the outer tube (702), the inner tube (701) is not communicated with the upper end of the outer tube (702), the upper end of the inner tube (701) is connected with an input connecting tube of a low-temperature working medium, and the upper end of the outer tube (702) is connected with an output connecting tube of a high-temperature working medium.
4. A vertical evaporator according to claim 3 wherein: two ends of the connecting pipe are respectively connected with the ascending header (6) and the descending header (1).
5. The vertical evaporator according to claim 4, wherein: the connecting pipe comprises an outer connecting pipe (5) and an inner connecting pipe (2) coaxially arranged in the outer connecting pipe (5), one end of the inner connecting pipe (2) in the outer connecting pipe (5) is closed, and the other end of the inner connecting pipe (2) extends to the outside of the outer connecting pipe (5) and is connected with a descending header (1); one end of the outer connecting pipe (5) close to the descending header (1) is closed, and the other end of the outer connecting pipe (5) is connected with the ascending header (6) arranged outside the main body shell (3); the inner connecting pipe (2) is communicated with an inner pipe (701) of the heat exchange pipe (7), and the outer connecting pipe (5) is communicated with an outer pipe (702) of the heat exchange pipe (7).
6. The vertical evaporator according to claim 1, wherein: the heat exchange tube is characterized in that the lower ends of the heat exchange tubes (7) are respectively provided with a sealing head (703), the thickness of each sealing head (703) is larger than the wall thickness of the outer wall of each heat exchange tube (7), and each sealing head (703) is of a spherical structure.
7. The vertical evaporator according to claim 1, wherein: a sleeve (8) is coaxially arranged outside the heat exchange tube (7), and fins (801) are arranged outside the sleeve (8).
8. The vertical evaporator according to claim 7, wherein: the fins (801) are spiral fins (801) which are arranged continuously.
9. The vertical evaporator according to claim 1, wherein: a space is reserved between the lower end of the heat exchange tube (7) and the lower end of the main body shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310925850.1A CN116839391A (en) | 2023-07-26 | 2023-07-26 | Vertical evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310925850.1A CN116839391A (en) | 2023-07-26 | 2023-07-26 | Vertical evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116839391A true CN116839391A (en) | 2023-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310925850.1A Pending CN116839391A (en) | 2023-07-26 | 2023-07-26 | Vertical evaporator |
Country Status (1)
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| CN (1) | CN116839391A (en) |
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2023
- 2023-07-26 CN CN202310925850.1A patent/CN116839391A/en active Pending
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|---|---|---|---|---|
| US20100254891A1 (en) * | 2007-07-20 | 2010-10-07 | Ifp | Bayonet tube exchanger-reactor allowing operation with pressure differences of the order of 100 bars between the tube side and the shell side |
| WO2011113364A1 (en) * | 2010-03-18 | 2011-09-22 | Yan Xuming | Tubular thin film evaporator |
| US20120006516A1 (en) * | 2010-06-11 | 2012-01-12 | IFP Energies Nouvelles | Exchanger-reactor with bayonet tubes and chimneys suspended from the upper dome of the reactor |
| WO2017164456A1 (en) * | 2016-03-25 | 2017-09-28 | 콘티테크플루이드코리아 유한회사 | Double pipe for heat exchange |
| CN216925235U (en) * | 2022-02-09 | 2022-07-08 | 青岛德固特节能装备股份有限公司 | Tube still type casing pipe quenching boiler |
| CN217844901U (en) * | 2022-05-31 | 2022-11-18 | 西子清洁能源装备制造股份有限公司 | Anti-condensation self-ash-cleaning evaporator of waste heat boiler |
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Country or region after: China Address after: No. 68, Bangxi Road, Bangjun Town, Jizhou District, Tianjin, 301900 (with multiple address information) Applicant after: Tianjin Huaneng Thermal Equipment Group Co.,Ltd. Address before: No. 68, Bangxi Road, Bangjun Town, Jizhou District, Tianjin, 301900 (with multiple address information) Applicant before: TIANJIN HUANENG THERMAL EQUIPMENT Co.,Ltd. Country or region before: China |