CN115638679A - Phthalic anhydride gas cooler - Google Patents
Phthalic anhydride gas cooler Download PDFInfo
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- CN115638679A CN115638679A CN202211443607.8A CN202211443607A CN115638679A CN 115638679 A CN115638679 A CN 115638679A CN 202211443607 A CN202211443607 A CN 202211443607A CN 115638679 A CN115638679 A CN 115638679A
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Abstract
The invention relates to the technical field of gas cooling, and provides a phthalic anhydride gas cooler, which comprises: the cooling device comprises a shell, a connecting pipe and a cooling pipe, wherein the shell is divided into an air inlet shell and an air outlet shell, the air inlet shell is provided with an air inlet bin, the air outlet shell is provided with an air outlet bin, the air inlet bin is provided with an air inlet, and the air outlet bin is provided with an air outlet; the connecting pipes are provided with a plurality of connecting pipes, two ends of each connecting pipe are respectively arranged on the air inlet shell and the air outlet shell, and the air inlet bin and the air outlet bin are communicated through the connecting pipes; the cooling pipe is arranged in the connecting pipe, a cooling channel is formed between the cooling pipe and the connecting pipe and used for cooling phthalic anhydride gas, and a plurality of through holes are formed in the cooling pipe; the sealing element is rotatably arranged in the cooling pipe and is used for sealing the through hole; the driving piece is arranged on the cooling pipe and used for driving the sealing piece to rotate, and after the sealing piece rotates, the through hole is communicated with the cooling channel and the cooling pipe. Through above-mentioned technical scheme, the problem of the phthalic anhydride gas cooler washs the difficulty among the prior art has been solved.
Description
Technical Field
The invention relates to the technical field of gas cooling, in particular to a phthalic anhydride gas cooler.
Background
Phthalic anhydride is also called phthalic anhydride, and cyclic anhydride formed by dehydrating phthalic acid in molecules is white crystalline powder, is insoluble in cold water, slightly soluble in hot water and diethyl ether, soluble in ethanol, pyridine, benzene, carbon disulfide and the like, is an important organic chemical raw material, and is an important intermediate for preparing phthalate plasticizers, coatings, saccharin, dyes and organic compounds. There are two production methods for phthalic anhydride, naphthalene and ortho, which are both gas-phase oxidation under the action of air oxidant to produce phthalic anhydride, and both methods require cooling of phthalic anhydride gas.
Among the prior art, the cooler of general use has two kinds of modes, is coil pipe formula and fin formula respectively, cools off phthalic anhydride gas, because partial phthalic anhydride can the adhesion on coil pipe or fin, finally forms crystalline phthalic anhydride, crystalline phthalic anhydride can corrode coil pipe or fin, so need regularly wash the cooler, but the interval is little between coil pipe or the fin, and it is very inconvenient to wash. The machine is stopped every time of cleaning, so the cleaning time is long, the efficiency is low, and the influence on the production is very large.
Disclosure of Invention
The invention provides a phthalic anhydride gas cooler, which solves the problem that the phthalic anhydride gas cooler in the related technology is difficult to clean.
The technical scheme of the invention is as follows:
a phthalic anhydride gas cooler, comprising:
the shell is divided into an air inlet shell and an air outlet shell, the air inlet shell is provided with an air inlet bin, the air outlet shell is provided with an air outlet bin, the air inlet bin is provided with an air inlet, and the air outlet bin is provided with an air outlet;
the connecting pipes are provided with a plurality of connecting pipes, two ends of each connecting pipe are respectively arranged on the air inlet shell and the air outlet shell, and the connecting pipes are used for communicating the air inlet bin with the air outlet bin;
the cooling pipe is arranged in the connecting pipe, a cooling channel is formed between the cooling pipe and the connecting pipe, the cooling channel is used for cooling phthalic anhydride gas, and a plurality of through holes are formed in the cooling pipe;
a seal member rotatably disposed within the cooling tube, the seal member for sealing the through hole;
the driving piece is arranged on the cooling pipe and used for driving the sealing piece to rotate, and after the sealing piece rotates, the through hole is communicated with the cooling channel and the cooling pipe.
As a further technical solution, the cooling pipe has a sliding groove on an inner wall thereof, and the driving member includes:
the rotating disc is rotatably arranged in the cooling pipe and consists of a rotating shaft and a plurality of connecting rods, the connecting rods are circumferentially arranged on the rotating disc, and the sealing elements are arranged on the connecting rods;
the sliding block is arranged in the rotating disc and slides along the sliding groove;
and the fan blades are arranged on the rotating disc and are positioned in the cooling pipe.
As a further technical scheme, the driving parts are provided with two parts which are respectively positioned at two sides of the connecting pipe, and the rotating directions of the two fan blades are the same.
As a further technical solution, the sealing member includes:
the two ends of the rod body are respectively connected to the two rotating discs;
and the sealing bulge is arranged on the rod body, and the through hole is sealed by the sealing bulge after the rod body rotates.
As a further technical scheme, two ends of the cooling pipe respectively penetrate through the air inlet bin and the air outlet bin.
As a further technical solution, the method further comprises:
and a plurality of cooling fins which are circumferentially arranged on the connecting pipe.
As a further technical scheme, the air inlet is positioned at the bottom of the air inlet bin, and the air outlet is positioned at the top of the air outlet bin.
As a further technical scheme, the connecting pipe slope sets up, the connecting pipe is close to inlet bin one end is less than and is close to the storehouse one end of giving vent to anger, inlet bin with it all inclines to set up to go out the storehouse bottom, still includes:
the two sewage draining ports are respectively arranged on the air inlet shell and the air outlet shell, are in a normally closed state and are located on the lower side.
As a further technical solution, the method further comprises:
the one-way valve is arranged on the air inlet and used for enabling phthalic anhydride gas to enter the air inlet bin.
The working principle and the beneficial effects of the invention are as follows:
1. according to the invention, the cooling pipe is arranged in the connecting pipe, then the through hole is formed in the cooling pipe, and when the terephthalic anhydride gas is cooled, the through hole is sealed by the sealing element; when cleaning is needed, the driving piece drives the sealing piece to rotate, then the through hole is opened, and the cooling channel is cleaned by hot water or steam;
2. according to the invention, the fan blade is used as a power source, the fan blade is impacted by cooling liquid or hot water, the fan blade drives the sealing piece to rotate, the opening and closing of the through hole can be realized, and the arrangement of an external power source is avoided;
3. according to the invention, by arranging the radiating fins and increasing the retention time of the phthalic anhydride gas in the cooler, the cooling effect of the cooler on the phthalic anhydride gas can be improved, so that the size of the cooler is reduced, and the cooler is more suitable for various environments.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a diagram showing the positional relationship between the connecting pipe and the cooling pipe according to the present invention;
FIG. 4 is a cross-sectional view of a connecting tube according to the present invention;
FIG. 5 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic view of a cooling tube arrangement according to the present invention;
FIG. 7 is a schematic view of the seal and drive member configuration of the present invention;
FIG. 8 is an enlarged view taken at B of FIG. 7 in accordance with the present invention;
in the figure: 1. the air inlet device comprises an air inlet shell, 2, an air outlet shell, 3, an air inlet bin, 4, an air outlet bin, 5, an air inlet, 6, an air outlet, 7, a connecting pipe, 8, a cooling pipe, 9, a cooling channel, 10, a through hole, 11, a sealing element, 12, a driving element, 13, a sliding groove, 14, a rotating disc, 15, a sliding block, 16, fan blades, 17, a rod body, 18, a cooling fin, 19, a sewage outlet, 20, a one-way valve, 21 and a sealing bulge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in figures 1-8 of the drawings,
a phthalic anhydride gas cooler, comprising:
the shell is divided into an air inlet shell 1 and an air outlet shell 2, wherein the air inlet shell 1 is provided with an air inlet bin 3, the air outlet shell 2 is provided with an air outlet bin 4, the air inlet bin 3 is provided with an air inlet 5, and the air outlet bin 4 is provided with an air outlet 6;
the connecting pipes 7 are provided with a plurality of connecting pipes, two ends of each connecting pipe are respectively arranged on the air inlet shell 1 and the air outlet shell 2, and the air inlet bin 3 is communicated with the air outlet bin 4 through the connecting pipes 7;
the cooling pipe 8 is arranged in the connecting pipe 7, a cooling channel 9 is formed between the cooling pipe 8 and the connecting pipe 7, the cooling channel 9 is used for cooling phthalic anhydride gas, and a plurality of through holes 10 are formed in the cooling pipe 8;
the sealing element 11 is rotatably arranged in the cooling pipe 8, and the sealing element 11 is used for sealing the through hole 10;
and the driving part 12 is arranged on the cooling pipe 8, the driving part 12 is used for driving the sealing part 11 to rotate, and after the sealing part 11 rotates, the through hole 10 is communicated with the cooling channel 9 and the cooling pipe 8.
In this embodiment, in order to wash the cooler, the cooler is divided into the storehouse of admitting air 3 and the storehouse of giving vent to anger 4, and the storehouse of admitting air 3 communicates through connecting pipe 7 with the storehouse of giving vent to anger 4, and cooling tube 8 is located connecting pipe 7, and phthalic anhydride is gaseous to get into the storehouse of admitting air 3 through air inlet 5, then gets into the storehouse of giving vent to anger 4 through the cooling channel 9 between connecting pipe 7 and the cooling tube 8, and phthalic anhydride is gaseous at the internal cooling of cooling channel 9. Since there are a plurality of cooling passages 9, the amount of phthalic anhydride gas in each cooling passage 9 is small, the phthalic anhydride gas is cooled to a desired temperature after passing through the cooling passages 9, and the temperature of the cooled phthalic anhydride gas can be controlled by adjusting the length of the connection pipe 7 or the temperature of the cooling liquid. Phthalic anhydride gas can remain on connecting pipe 7 inner wall and 8 outer walls of cooling tube, when needs clearance, rotate through driving piece 12 drive sealing member 11, make cooling tube 8 and cooling channel 9 intercommunication, then let in hot water or steam toward cooling tube 8 in, hot water or steam will follow through-hole 10 and get into in cooling channel 9, make hot water or steam have pressure, when getting into cooling channel 9, hot water or steam are that the injection gets into, phthalic anhydride is the hot water that easily dissolves, so phthalic anhydride will melt, and because hot water or steam have pressure, can sputter on 8 outer walls of cooling tube, thereby with 8 outer walls sanitization of cooling tube. When the steam-water-steam combined type cleaning machine is used for cleaning, steam can be preferably introduced firstly, and then hot water is introduced, so that the cleaning efficiency is higher, and the cleaning time is shorter. After cleaning, the sealing element 11 is driven to rotate by the driving element 12 to seal the through hole 10, so that cooling liquid is prevented from entering the cooling channel 9 when the cooling device is used next time.
Further, the cooling pipe 8 has a sliding groove 13 on the inner wall thereof, and the driving member 12 includes:
the rotating disc 14 is rotatably arranged in the cooling pipe 8, the rotating disc 17 consists of a rotating shaft and a plurality of connecting rods, the connecting rods are circumferentially arranged on the rotating disc, and the sealing elements 11 are arranged on the connecting rods;
a slider 15 provided in the rotating disk 14, the slider 15 sliding along the sliding groove 13;
In this embodiment, in order to reduce the external force driving, the fan blades 16 are disposed in the cooling pipe 8, and the cooler is an industrial cooler, so the diameters of the connecting pipe 7 and the cooling pipe 8 are large, the fan blades 16 can be placed in the cooling pipe 8, and the fan blades 16 with different sizes are selected according to the cooling pipes 8 with different diameters, which is common knowledge of those skilled in the art. Since there are two rotational directions of the fan blades 16, the cooling fluid and the hot water or steam are introduced in opposite directions. The specific process is as follows: when the cooling liquid is introduced, the cooling liquid drives the fan blades 16 to rotate, the fan blades 16 drive the sliding blocks 15 to slide in the sliding grooves 13 through the connecting rods, the through holes 10 are sealed by the sealing pieces 11, and then the cooling liquid is conveyed continuously and cannot enter the cooling channel 9; when cleaning is needed, hot water or steam enters the cooling pipe 8 from the opposite inlet of the cooling liquid, and under the driving of the hot water or the steam, the fan blade 16 rotates, so that the sliding block slides again, the sealing piece 11 leaves the through hole 10, the through hole 10 is opened, and the hot water or the steam cleans the cooling channel 9. By calculation, it is just possible to seal or open the through-hole 10 when the slider 15 is slid to both ends of the slide groove 13.
Further, the driving member 12 has two blades 16, which are respectively located at two sides of the connecting pipe 7 and have the same rotation direction.
In this embodiment, in order to open or close the through hole 10 better, two driving members 12 are provided in the cooling pipe 8, preferably, the fan blade 16 is spaced from the through hole 10, so that the through hole 10 is closed after the fan blade 16 is driven to rotate by the cooling liquid, and the cooling liquid does not enter the cooling channel 9 from the through hole 10. After steam or hot water enters from the other end of the cooling pipe 8, the through hole 10 can be opened quickly, and when the hot water or the steam enters the section needing to be cleaned, the cooling channel 9 is cleaned directly, so that water consumption is saved, and cleaning time is saved.
Further, the seal 11 includes:
two ends of the rod body 17 are respectively connected to the two connecting rods;
and the sealing bulge 21 is arranged on the rod body 17, and the through hole 10 is sealed by the sealing bulge after the rod body 17 rotates.
In this embodiment, in order to ensure the sealing performance of the through hole 10, the sealing protrusion 21 is disposed on the rod body 17, and the through hole 10 is sealed by the sealing protrusion 21, so that the rod body 17 and the sealing protrusion 21 are formed to be double-sealed, and the sealing effect is better. Preferably, the sealing protrusion 21 is made of plastic material to prevent the locking during rotation.
Furthermore, two ends of the cooling pipe 8 respectively penetrate through the air inlet bin 3 and the air outlet bin 4.
In this embodiment, in order to accelerate the cooling further, all have cooling tube 8 in storehouse 3 and the storehouse 4 of giving vent to anger of admitting air, in storehouse 3 of admitting air the gaseous primary cooling of terephthalic acid anhydride, strengthen the cooling effect in storehouse 4 of giving vent to anger. The outer walls of the cooling pipes 8 in the air inlet bin 3 and the air outlet bin 4 can be optionally disassembled and then manually cleaned. Preferably, through holes 10 are also formed in the cooling pipes 8 in the air inlet bin 3 and the air outlet bin 4, and are sealed by the sealing members 11 and the driving members 12, so that hot water or steam is sprayed into the air inlet bin 3 and the air outlet bin 4 through the through holes 10 during cleaning, and the outer wall of the cooling pipes 8, the air inlet bin 3 and the air outlet bin 4 are cleaned.
Further, the method also comprises the following steps:
and a plurality of radiating fins 18 circumferentially arranged on the connecting pipe 7.
In this embodiment, the heat sink 18 is provided on the connection pipe 7, and a double cooling effect can be provided for the phthalic anhydride gas in the cooling passage 9. Preferably, the connecting rod 7 is made of a heat conducting material, so that the cooling effect is improved, the size of the whole cooler is reduced, and the cooler is more suitable for being used in an industrial field.
Further, the air inlet 5 is positioned at the bottom of the air inlet bin 3, and the air outlet 6 is positioned at the top of the air outlet bin 4.
In this embodiment, in order to increase the phthalic anhydride gas flow time in the cooler, the phthalic anhydride gas gets into from the 3 bottoms in storehouse of admitting air, gets into cooling channel 9 through free diffusion, then gets into out the gas storehouse 9, gets into out the gas storehouse 9 after and discharges from the 4 tops in storehouse of giving vent to anger through free diffusion, has increased the flow time of phthalic anhydride gas in the cooler, further strengthens cooler cooling effect, can make the cooler volume littleer.
Further, the slope of connecting pipe 7 sets up, and connecting pipe 7 is close to 3 one ends in the storehouse of admitting air and is less than and be close to 4 one ends in the storehouse of giving vent to anger, and the storehouse of admitting air 3 all slopes to set up with 4 bottoms in the storehouse of giving vent to anger, still includes:
the two sewage outlets 19 are respectively arranged on the air inlet shell 1 and the air outlet shell 2, the sewage outlet 19 is in a normally closed state, and the two sewage outlets 19 are both positioned on the lower side.
In this embodiment, the connecting rod 7 is obliquely arranged, so that the waste water after cleaning the cooling channel 9 enters the air inlet bin 3 along the connecting pipe, and then is discharged through the sewage outlet 19. The drain 19 is normally closed to ensure that the phthalic anhydride gas does not leak from the drain 19, and the drain is opened only when the cleaning is performed. Because the air inlet bin 3 and the air outlet bin 4 can be cleaned through the cooling pipe 8, the air outlet bin 4 is also provided with a sewage draining outlet.
Further, the method also comprises the following steps:
the one-way valve 20 is arranged on the air inlet 5, and the one-way valve 20 is used for enabling phthalic anhydride gas to enter the air inlet bin 3.
In this embodiment, in order to prevent the wastewater from being discharged from the inlet 5, the one-way valve 20 is provided on the inlet 5, and only the phthalic anhydride gas enters the inlet chamber 3 from the inlet 5, and the wastewater cannot be discharged from the inlet 5.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Phthalic anhydride gas cooler, characterized by, includes:
the air conditioner comprises a shell, wherein the shell is divided into an air inlet shell (1) and an air outlet shell (2), the air inlet shell (1) is provided with an air inlet bin (3), the air outlet shell (2) is provided with an air outlet bin (4), the air inlet bin (3) is provided with an air inlet (5), and the air outlet bin (4) is provided with an air outlet (6);
the number of the connecting pipes (7) is multiple, two ends of each connecting pipe are respectively arranged on the air inlet shell (1) and the air outlet shell (2), and the air inlet bin (3) is communicated with the air outlet bin (4) through the connecting pipes (7);
the cooling pipe (8) is arranged in the connecting pipe (7), a cooling channel (9) is formed between the cooling pipe (8) and the connecting pipe (7), the cooling channel (9) is used for cooling phthalic anhydride gas, and a plurality of through holes (10) are formed in the cooling pipe (8);
a seal (11) rotatably disposed within the cooling tube (8), the seal (11) being for sealing the through-hole (10);
the driving piece (12) is arranged on the cooling pipe (8), the driving piece (12) is used for driving the sealing piece (11) to rotate, and after the sealing piece (11) rotates, the through hole (10) is communicated with the cooling channel (9) and the cooling pipe (8).
2. The phthalic anhydride gas cooler according to claim 1, wherein the cooling pipe (8) has a sliding groove (13) on an inner wall thereof, and the driving member (12) comprises:
the rotating disc (14) is rotatably arranged in the cooling pipe (8), the rotating disc (14) consists of a plurality of rotating shafts and a plurality of connecting rods, the circumferences of the connecting rods are arranged on the rotating shafts, and the sealing elements (11) are arranged on the connecting rods;
the sliding block (15) is arranged on the connecting rod, and the sliding block (15) slides along the sliding groove (13);
and the fan blades (16) are arranged on the rotating shaft and are positioned in the cooling pipe (8).
3. Phthalic anhydride gas cooler according to claim 2, characterized in that the drive member (12) has two, one on each side of the connecting tube (7), the two fan blades (16) having the same direction of rotation.
4. The phthalic anhydride gas cooler of claim 3, wherein the seal (11) comprises:
the two ends of the rod body (17) are respectively connected to the two rotating discs (14);
and the sealing bulge (21) is arranged on the rod body (17), and after the rod body (17) rotates, the through hole (10) is sealed by the sealing bulge (21).
5. Phthalic anhydride gas cooler according to claim 1, characterized in that the cooling pipe (8) passes through the inlet bin (3) and the outlet bin (4) at both ends, respectively.
6. The phthalic anhydride gas cooler of claim 1, further comprising:
and a plurality of cooling fins (18) circumferentially arranged on the connecting pipe (7).
7. Phthalic anhydride gas cooler according to claim 1, characterized in that the gas inlet (5) is located at the bottom of the gas inlet silo (3) and the gas outlet (6) is located at the top of the gas outlet silo (4).
8. The phthalic anhydride gas cooler of claim 7, wherein the connecting pipe (7) is disposed obliquely, one end of the connecting pipe (7) close to the gas inlet bin (3) is lower than one end of the connecting pipe close to the gas outlet bin (4), and bottoms of the gas inlet bin (3) and the gas outlet bin (4) are both disposed obliquely, further comprising:
and the two drain outlets (19) are respectively arranged on the air inlet shell (1) and the air outlet shell (2), the drain outlet (19) is in a normally closed state, and the two drain outlets (19) are positioned on one lower side.
9. The phthalic anhydride gas cooler of claim 8, further comprising:
the one-way valve (20) is arranged on the air inlet (5), and the one-way valve (20) is used for allowing phthalic anhydride gas to enter the air inlet bin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443607.8A CN115638679B (en) | 2022-11-18 | 2022-11-18 | Phthalic anhydride gas cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443607.8A CN115638679B (en) | 2022-11-18 | 2022-11-18 | Phthalic anhydride gas cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115638679A true CN115638679A (en) | 2023-01-24 |
| CN115638679B CN115638679B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211443607.8A Active CN115638679B (en) | 2022-11-18 | 2022-11-18 | Phthalic anhydride gas cooler |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69019751D1 (en) * | 1989-08-30 | 1995-06-29 | Cvd System Cleaners Corp | CLEANING DEVICE FOR A CHEMICAL VAPOR DEPOSITION SYSTEM. |
| CN101337154A (en) * | 2007-07-03 | 2009-01-07 | 袁相质 | Benzoic anhydride tail-gas cleaning production technique with zero release of waste water |
| JP2010091212A (en) * | 2008-10-09 | 2010-04-22 | Sanoh Industrial Co Ltd | Heat exchanger |
| JP2013096647A (en) * | 2011-11-01 | 2013-05-20 | Sakura Prolink:Kk | Air heat exchanger with built-in cooling and heating coil |
| CN203704730U (en) * | 2013-09-18 | 2014-07-09 | 张伟 | Shell and tube water storage multi-tube heating header hot fluid heat exchanger |
| US20210170455A1 (en) * | 2019-12-05 | 2021-06-10 | Caterpillar Paving Products Inc. | Cooling package cleaning system |
-
2022
- 2022-11-18 CN CN202211443607.8A patent/CN115638679B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69019751D1 (en) * | 1989-08-30 | 1995-06-29 | Cvd System Cleaners Corp | CLEANING DEVICE FOR A CHEMICAL VAPOR DEPOSITION SYSTEM. |
| CN101337154A (en) * | 2007-07-03 | 2009-01-07 | 袁相质 | Benzoic anhydride tail-gas cleaning production technique with zero release of waste water |
| JP2010091212A (en) * | 2008-10-09 | 2010-04-22 | Sanoh Industrial Co Ltd | Heat exchanger |
| JP2013096647A (en) * | 2011-11-01 | 2013-05-20 | Sakura Prolink:Kk | Air heat exchanger with built-in cooling and heating coil |
| CN203704730U (en) * | 2013-09-18 | 2014-07-09 | 张伟 | Shell and tube water storage multi-tube heating header hot fluid heat exchanger |
| US20210170455A1 (en) * | 2019-12-05 | 2021-06-10 | Caterpillar Paving Products Inc. | Cooling package cleaning system |
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| Publication number | Publication date |
|---|---|
| CN115638679B (en) | 2023-03-10 |
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