CN212253783U - Multi-stage heat exchanger for colored materials - Google Patents
Multi-stage heat exchanger for colored materials Download PDFInfo
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- CN212253783U CN212253783U CN201922036821.1U CN201922036821U CN212253783U CN 212253783 U CN212253783 U CN 212253783U CN 201922036821 U CN201922036821 U CN 201922036821U CN 212253783 U CN212253783 U CN 212253783U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model discloses a multi-stage heat exchanger for colored materials, which comprises a high-temperature section heat exchange system and a low-temperature section heat exchange system; the high-temperature section heat exchange system is communicated with the low-temperature section heat exchange system, and the low-temperature section heat exchange system is positioned below the high-temperature section heat exchange system; the high-temperature section heat exchange system transfers heat energy of high-temperature materials to a first liquid medium, the high-temperature materials are changed into medium-temperature materials, the low-temperature section heat exchange system transfers heat energy of the medium-temperature materials to a second liquid medium, and the medium-temperature materials are changed into low-temperature materials; the high-temperature section heat exchange system comprises a high-temperature section heat exchanger tube box and a high-temperature section upper end socket, an upper tube plate and a lower tube plate which are sequentially arranged on the high-temperature section heat exchanger tube box from top to bottom, the low-temperature section heat exchange system is of a heat exchanger structure, medium-temperature materials falling from the high-temperature section heat exchange system enter a tube side of the low-temperature section heat exchange system, and a shell side is filled with a second liquid medium. The utility model discloses a set up two-stage heat transfer system, utilize two kinds of liquid medium to transmit heat energy, can be with high temperature material heat energy make full use of.
Description
Technical Field
The utility model relates to a material waste heat recovery utilizes's technical field, specifically is coloured material multi-stage heat exchanger.
Background
The heat exchanger that generally uses is the shell and tube heat exchanger of single shell side, and the shell body of shell and tube heat exchanger is mostly the cylinder, and inside is equipped with the tube bank, and the tube bank both ends are fixed on the tube sheet. One of the cold fluid and the hot fluid which carry out heat exchange flows in the tube and is called tube pass fluid; the other flows outside the tubes and is called shell-side fluid. The heat exchanger has low heat exchange efficiency, and the reason for the low heat exchange efficiency is that: the shell-and-tube heat exchanger is only provided with one shell pass, heat conduction of liquid to be treated is realized by the refrigerant passing in and out of the shell pass, two fluids are not in sufficient time contact, the heat exchange stroke is short, and impact force generated by the two fluids is avoided. One solution is to continuously pass a hot fluid through a plurality of heat exchangers by using multi-stage cooling, however, the method occupies a large space and has low heat exchange efficiency.
In order to solve the problem, the utility model discloses it is proposed to this end.
Disclosure of Invention
The utility model aims at providing a coloured material multistage heat exchanger for realize the coloured material waste heat recovery of high temperature, utilize.
In order to realize the purpose, the utility model discloses a following technical scheme realizes:
the multi-stage heat exchanger for the colored materials comprises a high-temperature section heat exchange system and a low-temperature section heat exchange system; the high-temperature section heat exchange system is communicated with the low-temperature section heat exchange system, and the low-temperature section heat exchange system is positioned below the high-temperature section heat exchange system; the high-temperature section heat exchange system transfers heat energy of high-temperature materials to a first liquid medium, the high-temperature materials are changed into medium-temperature materials, the low-temperature section heat exchange system transfers heat energy of the medium-temperature materials to a second liquid medium, and the medium-temperature materials are changed into low-temperature materials.
Further, the high-temperature section heat exchange system comprises a high-temperature section heat exchanger tube box, and a high-temperature section upper end socket, an upper tube plate and a lower tube plate which are sequentially arranged on the high-temperature section heat exchanger tube box from top to bottom, wherein the high-temperature section upper end socket is hermetically arranged at the upper end of the high-temperature section heat exchanger tube box; the upper tube plate and the lower tube plate are hermetically arranged on the inner walls of the upper end and the lower end of the high-temperature section heat exchanger tube box, a plurality of heat exchange tubes are arranged in the high-temperature section heat exchanger tube box, the upper end and the lower end of each heat exchange tube are fixedly arranged on the upper tube plate and the lower tube plate respectively, and the upper tube plate, the lower tube plate and all the heat exchange tubes form a heat exchange tube circulation structure together; and the space between the upper tube plate and the lower tube plate, the inner wall of the high-temperature section heat exchanger tube box and the outer surface of the heat exchange tube jointly form a shell pass circulation structure.
Furthermore, a high-temperature material inlet is formed in the upper sealing head of the high-temperature section and above the high-temperature circulation cavity, and the high-temperature material enters the high-temperature section heat exchange system through the high-temperature material inlet.
Further, a first inlet is arranged below the right side of the high-temperature section heat exchanger tube box, and a first outlet is arranged above the left side of the high-temperature section heat exchanger tube box; the first inlet and the first outlet are communicated with the shell pass flow structure.
Furthermore, an observation window is arranged on the upper end socket of the high-temperature section.
Further, a first partition plate is arranged above the same side of the first inlet and on the inner wall of the high-temperature section heat exchanger tube box, and a space is reserved between the other end of the first partition plate and the high-temperature section heat exchanger tube box for the circulation of a heat exchange medium; and a second partition plate is arranged below the same side of the first outlet and on the inner wall of the high-temperature section heat exchanger tube box, and a space is reserved between the other end of the second partition plate and the high-temperature section heat exchanger tube box for the circulation of a heat exchange medium.
Furthermore, the low-temperature section heat exchange system is of a heat exchanger structure, the medium-temperature material falling from the high-temperature section heat exchange system enters a tube side of the low-temperature section heat exchange system, and a second liquid medium is filled in a shell side.
Further, the low-temperature section heat exchange system comprises a low-temperature section outer shell, a low-temperature section upper end socket, a low-temperature section lower end socket and a low-temperature section heat exchanger pipe box; the low-temperature section upper end socket, the low-temperature section lower end socket and the low-temperature section shell body form a low-temperature heat exchange cavity structure, and the low-temperature section heat exchanger pipe box is located in the low-temperature heat exchange cavity structure.
Furthermore, an ash outlet is arranged below the low-temperature section lower end socket; a condensed water inlet is arranged on the lower end enclosure of the low-temperature section, and a hot sewage outlet is arranged on the other side of the lower end enclosure of the low-temperature section; the low temperature section upper end socket is provided with a hot water outlet, and the hot sewage outlet is arranged at the same side as the hot water outlet.
In one embodiment, the low-temperature section heat exchange system adopts an obliquely inserted finned tube structure, the low-temperature section heat exchanger tube box is provided with mounting holes, the plurality of coil pipes are obliquely inserted and mounted on the low-temperature section heat exchanger tube box through the mounting holes, and outlets of the coil pipes are communicated with the ash residue outlet.
In one embodiment, the low-temperature section heat exchanger tube box forms a tube pass, fins are further arranged in the low-temperature heat exchange cavity structure, the fins are obliquely inserted into the low-temperature section heat exchanger tube box, part of the fins are located on the inner side of the low-temperature section heat exchanger tube box, and part of the fins are located on the outer side of the low-temperature section heat exchanger tube box.
Advantageous effects
1. Utility model discloses a set up two-stage heat transfer system, utilize two kinds of liquid medium to transmit heat energy, can fully collect heat energy in the high temperature material and utilize.
2. The arrangement mode of the high-temperature section heat exchange system and the low-temperature section heat exchange system saves space compared with the mode that a plurality of heat exchangers adopt multi-stage cooling.
3. The fins are arranged in the low-temperature section heat exchange system, so that the effects of accelerating heat dissipation and accelerating heat energy transfer can be achieved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of a multi-stage heat exchanger for colored materials;
FIG. 2 is a schematic structural view of example 1;
FIG. 3 is a schematic diagram of a coil and a tube box of a low temperature section heat exchanger inserted obliquely;
fig. 4 is a schematic structural diagram of embodiment 2.
The following are the labels of the attached drawings in the multi-stage heat exchanger for colored materials, and the product can be clearly understood through the description of the attached drawings and the corresponding labels.
The high-temperature section heat exchanger tube box comprises a high-temperature section heat exchanger tube box 1, a first outlet 10, an observation window 11, a low-temperature section outer shell 12, a low-temperature section upper end enclosure 13, a low-temperature section heat exchanger tube box 14, fins 15, a low-temperature section lower end enclosure 16, a condensed water inlet 17, a hot water outlet 18, an ash residue outlet 19, a high-temperature section upper end enclosure 2, a hot sewage outlet 20, a high-temperature circulation cavity 21, a coil pipe 22, an upper pipe plate 3, a lower pipe plate 4, a heat exchange pipe 5, a first partition plate 6, a second partition plate 7, a high-temperature material inlet.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1, the multi-stage colored material heat exchanger comprises a high-temperature section heat exchange system and a low-temperature section heat exchange system; and the high-temperature section heat exchange system is communicated with the low-temperature section heat exchange system.
The high-temperature section heat exchange system transfers heat energy of high-temperature materials to a first liquid medium, preferably, the first liquid medium is liquid metal, the temperature of the first liquid medium rises, the high-temperature materials become medium-temperature materials, the low-temperature section heat exchange system transfers the heat energy of the medium-temperature materials to a second liquid medium, such as soft water, the temperature of the second liquid medium rises, and the medium-temperature materials become low-temperature materials.
Through setting up two-stage heat transfer system, utilize two kinds of liquid medium to carry out the transmission heat energy, can be with the heat energy make full use of in the high temperature material.
Specifically, the high-temperature section heat exchange system adopts a vertical shell-and-tube structure and comprises a high-temperature section heat exchanger tube box 1, and a high-temperature section upper end enclosure 2, an upper tube plate 3 and a lower tube plate 4 which are sequentially arranged on the high-temperature section heat exchanger tube box 1 from top to bottom, wherein the high-temperature section upper end enclosure 2 is hermetically arranged at the upper end of the high-temperature section heat exchanger tube box 1; the upper tube plate 3 and the lower tube plate 4 are hermetically arranged on the inner walls of the upper end and the lower end of the high-temperature section heat exchanger tube box 1, and the high-temperature section upper end enclosure 2, the high-temperature section heat exchanger tube box 1 and the upper tube plate 3 jointly form a high-temperature circulation cavity 21.
And a high-temperature material inlet 8 is formed in the upper end socket 2 of the high-temperature section and above the high-temperature circulation cavity 21, and the high-temperature material enters the heat exchange system of the high-temperature section through the high-temperature material inlet 8.
The high-temperature section heat exchanger tube box 1 is internally provided with a plurality of heat exchange tubes 5, the upper end and the lower end of each heat exchange tube 5 are respectively and fixedly arranged on an upper tube plate 3 and a lower tube plate 4, and the upper tube plate 3, the lower tube plate 4 and all the heat exchange tubes 5 jointly form a heat exchange tube circulation structure, so that high-temperature materials flow into a low-temperature section heat exchange system from a high-temperature circulation cavity 21 after passing through the heat exchange tubes 5.
And the space between the upper tube plate 3 and the lower tube plate 4, the inner wall of the high-temperature section heat exchanger tube box 1 and the outer surface of the heat exchange tube 5 jointly form a shell pass circulation structure.
A first inlet 9 is arranged below the right side of the high-temperature section heat exchanger tube box 1, and a first outlet 10 is arranged above the left side of the high-temperature section heat exchanger tube box 1. The first inlet 9 and the first outlet 10 are communicated with a shell pass flow structure.
Further, an observation window 11 is arranged on the high-temperature section upper end enclosure 2, and the observation window 11 is used for observing the heat exchange condition in the high-temperature section heat exchange system.
Further, a first partition plate 6 is arranged above the first inlet 9 and on the inner wall of the high-temperature section heat exchanger tube box 1, and a space is reserved between the other end of the first partition plate 6 and the high-temperature section heat exchanger tube box 1 for circulation of a heat exchange medium.
And a second partition plate 7 is arranged on the inner wall of the high-temperature section heat exchanger tube box 1 below the same side of the first outlet 10, and a space is reserved between the other end of the second partition plate 7 and the high-temperature section heat exchanger tube box 1 for circulation of a heat exchange medium.
The first partition plate 6 and the second partition plate 7 delay the circulation speed of the heat exchange medium, change the flow direction of the heat exchange medium and have better heat exchange efficiency.
And a pulse rapping system is arranged on the high-temperature section heat exchanger tube box to prevent high-temperature materials from being attached.
The high-temperature section heat exchange system adopts a shell-and-tube structure, firstly, high-temperature materials, such as high-temperature zinc calcine, are filled in a heat exchange tube circulation structure to more than 90% of capacity, heat is transferred to liquid metal flowing in the shell pass circulation structure in a closed tank mode, the high-temperature zinc calcine (about 900 ℃) is cooled to 300-400 ℃, and the temperature of the liquid metal is increased to 500 ℃ from 200 ℃.
The low-temperature section heat exchange system is positioned below the high-temperature section heat exchange system and comprises a low-temperature section outer shell 12, a low-temperature section upper end enclosure 13, a low-temperature section lower end enclosure 16 and a low-temperature section heat exchanger pipe box 14; the low-temperature section upper end enclosure 13 and the low-temperature section lower end enclosure 16 are hermetically mounted at the upper end and the lower end of the low-temperature section outer shell 12, the low-temperature section upper end enclosure 13, the low-temperature section lower end enclosure 16 and the low-temperature section outer shell 12 form a low-temperature heat exchange cavity structure, the low-temperature section heat exchanger tube box 14 is located in the low-temperature heat exchange cavity structure and extends in a low-temperature section heat exchange system to form the low-temperature section heat exchanger tube box 14 as the high-temperature section heat exchanger tube box 1, and preferably, the high-temperature section heat exchanger tube box 1 and the low-temperature.
The low-temperature section heat exchange system is of a heat exchanger structure, the medium-temperature material falling from the high-temperature section heat exchange system enters a tube pass of the low-temperature section heat exchange system, a second liquid medium is filled in a shell pass, and the preferred second liquid medium is soft water.
An ash outlet 19 is arranged below the low-temperature section lower end socket 16; a condensed water inlet 17 is arranged on the low-temperature section lower end socket 16, and a hot sewage outlet 20 is arranged on the other side of the low-temperature section lower end socket 16; the low-temperature section upper end enclosure 13 is provided with a hot water outlet 18, and a hot sewage outlet 20 and the hot water outlet 18 are arranged on the same side.
Example 1
Referring to fig. 2-3, specifically, the low-temperature section heat exchange system adopts an obliquely inserted finned tube structure, the low-temperature section heat exchanger tube box 14 is provided with mounting holes, the plurality of coil pipes 22 are obliquely inserted and mounted on the low-temperature section heat exchanger tube box 14 through the mounting holes, and outlets of the coil pipes 22 are communicated with the ash residue outlet 19.
Preferably, the plane of the coil 22 forms an acute angle a of 60 degrees with the plane of the low temperature section heat exchanger tube box 14.
The medium temperature material enters the coil pipe 22 through the heat exchange pipe 5 of the high temperature section heat exchange system, the low temperature heat exchange cavity structure is a shell pass, soft water enters the shell pass from the condensed water inlet 17, the temperature of the soft water rises through the coil pipe 22 and flows out from the hot water outlet 18, and the medium temperature material is changed into low temperature material ash through soft water heat exchange and flows out from the ash outlet 19.
Example 2
Referring to fig. 4, specifically, the low-temperature section heat exchanger tube box 14 forms a tube pass, a fin 15 is further arranged in the low-temperature heat exchange cavity structure, the fin 15 is obliquely inserted into the low-temperature section heat exchanger tube box 14, a part of the fin 15 is located inside the low-temperature section heat exchanger tube box 14, and a part of the fin 15 is located outside the low-temperature section heat exchanger tube box 14.
The fins 15 play a role in accelerating heat dissipation and heat energy transfer.
Preferably, the acute angle formed by the fin 15 and the low temperature section heat exchanger tube box 14 is 60 degrees.
The low-temperature section upper end enclosure 13, the low-temperature section heat exchanger tube box 14, the low-temperature section lower end enclosure 16 and the low-temperature section heat exchanger tube box 14 jointly form a shell pass.
The zinc calcine at 300-400 deg.c after passing through the tube pass is cooled to 130 deg.c and the soft water temperature in the shell pass is raised from normal temperature to 90-100 deg.c.
The system adopts novel liquid metal with low melting point and high boiling point as a core heat exchange medium, and can effectively recycle the heat energy released by the high-temperature zinc calcine. The liquid metal is an inert material, and even if the liquid metal contacts the zinc calcine, the liquid metal can not react, so that the leakage risk is extremely low, and the safety coefficient is high.
The liquid metal is in a liquid state at normal temperature, has extremely high heat conduction and electric conduction capability, large phase change latent heat, stable physicochemical property and melting point: 89 ℃, boiling point: 2200 ℃.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (11)
1. Coloured material multi-stage heat exchanger, its characterized in that: the system comprises a high-temperature section heat exchange system and a low-temperature section heat exchange system; the high-temperature section heat exchange system is communicated with the low-temperature section heat exchange system, and the low-temperature section heat exchange system is positioned below the high-temperature section heat exchange system; the high-temperature section heat exchange system transfers heat energy of high-temperature materials to a first liquid medium, the high-temperature materials are changed into medium-temperature materials, the low-temperature section heat exchange system transfers heat energy of the medium-temperature materials to a second liquid medium, and the medium-temperature materials are changed into low-temperature materials.
2. The multi-stage colored material heat exchanger of claim 1, wherein: the high-temperature section heat exchange system comprises a high-temperature section heat exchanger tube box (1) and a high-temperature section upper end socket (2), an upper tube plate (3) and a lower tube plate (4) which are sequentially arranged on the high-temperature section heat exchanger tube box (1) from top to bottom, wherein the high-temperature section upper end socket (2) is hermetically arranged at the upper end of the high-temperature section heat exchanger tube box (1); the upper tube plate (3) and the lower tube plate (4) are hermetically arranged on the inner walls of the upper end and the lower end of the high-temperature section heat exchanger tube box (1), a plurality of heat exchange tubes (5) are arranged in the high-temperature section heat exchanger tube box (1), the upper end and the lower end of each heat exchange tube (5) are fixedly arranged on the upper tube plate (3) and the lower tube plate (4) respectively, and the upper tube plate (3), the lower tube plate (4) and all the heat exchange tubes (5) jointly form a heat exchange tube circulation structure; and the space between the upper tube plate (3) and the lower tube plate (4), the inner wall of the high-temperature section heat exchanger tube box (1) and the outer surface of the heat exchange tube (5) jointly form a shell pass circulation structure.
3. The multi-stage colored material heat exchanger of claim 2, wherein: and a high-temperature material inlet (8) is formed in the high-temperature section upper end socket (2), and the high-temperature material enters the high-temperature section heat exchange system through the high-temperature material inlet (8).
4. The multi-stage colored material heat exchanger of claim 2, wherein: a first inlet (9) is formed in the lower portion of the right side of the high-temperature section heat exchanger tube box (1), and a first outlet (10) is formed in the upper portion of the left side of the high-temperature section heat exchanger tube box (1); the first inlet (9) and the first outlet (10) are communicated with the shell pass flow structure.
5. The multi-stage colored material heat exchanger of claim 2, wherein: an observation window (11) is arranged on the high-temperature section upper end enclosure (2).
6. The multi-stage colored material heat exchanger of claim 4, wherein: a first partition plate (6) is arranged above the same side of the first inlet (9) and on the inner wall of the high-temperature section heat exchanger tube box (1), and a space is reserved between the other end of the first partition plate (6) and the high-temperature section heat exchanger tube box (1) for a heat exchange medium to circulate; and a second partition plate (7) is arranged below the same side of the first outlet (10) and on the inner wall of the high-temperature section heat exchanger tube box (1), and a space is reserved between the other end of the second partition plate (7) and the high-temperature section heat exchanger tube box (1) for circulation of a heat exchange medium.
7. The multi-stage colored material heat exchanger of claim 1, wherein: the low-temperature section heat exchange system is of a heat exchanger structure, the medium-temperature material falling from the high-temperature section heat exchange system enters a tube side of the low-temperature section heat exchange system, and a second liquid medium is filled in a shell side.
8. The multi-stage colored material heat exchanger of claim 7, wherein: the low-temperature section heat exchange system comprises a low-temperature section outer shell (12), a low-temperature section upper end enclosure (13), a low-temperature section lower end enclosure (16) and a low-temperature section heat exchanger pipe box (14); the low-temperature section heat exchanger comprises a low-temperature section outer shell (12), a low-temperature section upper end socket (13) and a low-temperature section lower end socket (16), wherein the low-temperature section upper end socket (13) and the low-temperature section lower end socket (16) are hermetically arranged at the upper end and the lower end of the low-temperature section outer shell (12), the low-temperature section upper end socket (13), the low-temperature section lower end socket (16) and the low-temperature section outer shell (12) form a low-temperature heat exchange.
9. The multi-stage colored material heat exchanger of claim 8, wherein: an ash outlet (19) is arranged below the low-temperature section lower end socket (16); a condensed water inlet (17) is arranged on the low-temperature section lower end enclosure (16), and a hot sewage outlet (20) is arranged on the other side of the low-temperature section lower end enclosure (16); the low-temperature section upper end enclosure (13) is provided with a hot water outlet (18), and the hot sewage outlet (20) and the hot water outlet (18) are arranged on the same side.
10. The multi-stage colored material heat exchanger of claim 8, wherein: the low-temperature section heat exchange system adopts an inclined insertion type finned tube structure, a low-temperature section heat exchanger tube box (14) is provided with mounting holes, a plurality of coil pipes (22) are obliquely inserted and mounted on the low-temperature section heat exchanger tube box (14) through the mounting holes, and an outlet of each coil pipe (22) is communicated with an ash residue outlet (19).
11. The multi-stage colored material heat exchanger of claim 8, wherein: the low-temperature section heat exchanger tube box (14) forms a tube pass, fins (15) are further arranged in the low-temperature heat exchange cavity structure, the fins (15) are obliquely inserted into the low-temperature section heat exchanger tube box (14), part of the fins (15) are located on the inner side of the low-temperature section heat exchanger tube box (14), and part of the fins (15) are located on the outer side of the low-temperature section heat exchanger tube box (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036821.1U CN212253783U (en) | 2019-11-22 | 2019-11-22 | Multi-stage heat exchanger for colored materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036821.1U CN212253783U (en) | 2019-11-22 | 2019-11-22 | Multi-stage heat exchanger for colored materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212253783U true CN212253783U (en) | 2020-12-29 |
Family
ID=73972298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922036821.1U Expired - Fee Related CN212253783U (en) | 2019-11-22 | 2019-11-22 | Multi-stage heat exchanger for colored materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212253783U (en) |
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2019
- 2019-11-22 CN CN201922036821.1U patent/CN212253783U/en not_active Expired - Fee Related
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