CN113624033A - Tubular heat exchanger for recovering waste heat of thistle board drying process - Google Patents
Tubular heat exchanger for recovering waste heat of thistle board drying process Download PDFInfo
- Publication number
- CN113624033A CN113624033A CN202110966268.0A CN202110966268A CN113624033A CN 113624033 A CN113624033 A CN 113624033A CN 202110966268 A CN202110966268 A CN 202110966268A CN 113624033 A CN113624033 A CN 113624033A
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- Prior art keywords
- heat exchanger
- waste
- flue gas
- drying process
- chamber
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
Abstract
The invention discloses a tubular heat exchanger for recovering waste heat in a thistle board drying process, which comprises an air blower and a heat exchange chamber, and is characterized in that the heat exchange chamber is a square matrix formed by a single group or a plurality of groups of heat exchanger monomers, and the number of the heat exchanger monomers is modularly combined according to the actual ventilation; the high-temperature heat exchange side part is connected to the high-temperature waste flue gas inlet chamber, and the low-temperature heat exchange side part is connected to the waste flue gas outlet; the blower is connected with the heat exchanger monomer through a fresh air inlet chamber, and a fresh air outlet chamber is arranged at the monomer part of the tail heat exchanger. The heat exchange effect is showing, removable heat exchanger monomer modularization free combination structure, and installation, transportation of being convenient for, the tube bank is convenient for wash, has solved and has produced the problem of jam along with the operating duration extension in the actual production, and reasonable tube bank is arranged and does not have the welding assembly technology and can obtain the resistance value equal with plate heat exchanger, has overcome traditional tubular heat exchanger bulky, heavy, the big defect of resistance.
Description
Technical Field
The invention relates to a gypsum board manufacturing technology, in particular to a tubular heat exchanger for recovering waste heat in a paper-surface gypsum board drying process.
Background
In the production process of the gypsum board, the heat exchange technology is utilized to recover the waste heat of the moisture-discharging waste (flue gas) for heating and drying the supplemented gas source and the supplemented ingredient water, so that the process is an important process for saving energy and reducing the production cost. The existing paper-surface gypsum board production line adopts more waste heat recovery devices as plate heat exchangers, and has the advantages of small volume and light weight, but the defects of easy blockage and incomplete cleaning exist, and the gypsum board can be mixed with a small amount of paper scraps, glass fibers, gypsum dust and other impurities in the drying process to enter a channel of the waste (smoke) gas waste heat recovery heat exchanger, so that the plate heat exchanger is seriously blocked after being used for a period of time, the ventilation resistance is multiplied, the heat exchange effect is reduced, and the production energy consumption is increased. The traditional tubular heat exchanger is easy to clean and maintain, but has the defects of low heat exchange efficiency, large resistance, large volume and weight, difficult installation and transportation and the like.
Disclosure of Invention
The invention aims to solve the problems and provides a tubular heat exchanger for recovering waste heat in a gypsum plasterboard drying process, which has the characteristics of compact volume, high heat exchange efficiency, convenience in installation and transportation, maintenance and cleaning, energy conservation and the like.
The technical problem of the invention is mainly solved by the following technical scheme: a tubular heat exchanger for recovering waste heat in a thistle board drying process comprises an air blower and a heat exchange chamber, and is characterized in that the heat exchange chamber is a square matrix formed by a single group or a plurality of groups of heat exchanger monomers, and the number of the heat exchanger monomers is modularly combined according to actual ventilation; the high-temperature heat exchange side part is connected to the high-temperature waste flue gas inlet chamber, and the low-temperature heat exchange side part is connected to the waste flue gas outlet; the blower is connected with the heat exchanger monomer through a fresh air inlet chamber, and a fresh air outlet chamber is arranged at the monomer part of the tail heat exchanger.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, the heat exchanger monomer is of a cuboid structure, a group of thin-wall tube bundles are arranged in the cuboid of the heat exchanger monomer in the air, and the outer diameters of the thin-wall tube bundles are fixed at the upper end and the lower end of each thin-wall tube bundle by closed partition plates.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, the upper end and the lower end of the thin-wall tube bundle are fixed with the closed partition plate in an expansion process mode, namely, the tube opening of the thin-wall tube bundle exposed out of one end of the closed partition plate is a taper hole, and the outer diameter of the thin-wall tube bundle is in interference fit with the open hole in the closed partition plate.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, flanges are respectively arranged at the upper end and the lower end of the single cuboid structure of the heat exchanger.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, a square matrix formed by the heat exchanger monomers forms a fresh air walking route series structure from one end of the air blower to the fresh air outlet chamber.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, the heat exchanger units are connected in series through the vertical flange.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, the fresh air inlet chamber is connected with the heat exchanger monomer on the low-temperature heat exchange side.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, the heat exchanger monomers form a series structure, and are connected in series through waste flue gas return air chambers along a waste flue gas traveling route.
In the tubular heat exchanger for recovering waste heat in the paper-surface gypsum board drying process, preferably, the waste flue gas returning air chamber part, the waste flue gas outlet part and the fresh air outlet chamber part are all provided with access doors.
In the tubular heat exchanger for recovering waste heat in the thistle board drying process, preferably, the waste flue gas returning air chamber is of a cambered surface bent structure along a waste flue gas traveling route, and an air flow distribution device is arranged in the shell. The airflow distribution device, namely the flow guide device, can adjust the uniformity of the airflow.
In the tubular heat exchanger for recovering waste heat in the thistle board drying process, preferably, the condensate water collecting pipe is arranged at the flue gas returning air chamber at the bottom.
This technical scheme has designed one kind and has carried out waste heat recovery through the square matrix formula heat exchange chamber that comprises a plurality of heat exchanger monomers to the useless (flue gas) waste heat of moisture-containing steam of thistle board drying process exhaust, connects through sealing methods such as flange between a plurality of heat exchanger monomers, and not only field assembly is convenient, can select heat exchanger monomer number according to actual air volume needs moreover, realizes the modularization combination. The square matrix consists of a high-temperature heat exchange side and a low-temperature heat exchange side, and the system resistance is reduced to the minimum on the premise of ensuring the waste heat recovery efficiency.
The heat exchanger monomer of this scheme designs for the cuboid structure, and the thin-walled tube bank of being arranged in order rationally in it is aerial, and the cuboid structure has flange joint bore such as, constitutes place module (building blocks) ization combination such as transportation, field installation, optimizes the volume of whole product. On one hand, the large S-shaped wet waste gas channel formed by the single thin-wall tube bundles of the plurality of heat exchangers has sufficient distance to be heat-exchanged, and the distance can be selectively applied; on the other hand, a plurality of groups of heat exchanger monomers form a series structure, and the meaning of the series structure in the scheme has two layers: fresh air (fresh air) flows through a route outside a straight single-return pipe of all heat exchanger monomers, and waste flue gas moves along the thin-wall pipe bundle and a serial route formed by flue gas return air chambers. Fresh air (fresh air) can also keep all thin-wall tube bundles to obtain heat exchange when going out of the straight-line single-return pipe, and the ventilation quantity is controllable and adjustable through the airflow distribution device, so that the heat exchange effect can be completely ensured.
From the new trend direction of walking, use the heat transfer cubical space of rectangle as the basal area, the range of thin-wall tube bank is when providing the sharp vent of certain interval, also makes to have the vortex along the thin-wall tube bank on the ventilation straight line between, and in this scheme, this kind of vortex just makes the new trend heat transfer more abundant.
In addition, the outer diameter of the thin-wall tube bundle is fixed by the sealing plates at the upper end and the lower end of the thin-wall tube bundle in the single heat exchanger, and an expansion (flaring and tube supporting) process is designed, namely, a taper hole is formed at the tube opening of the thin-wall tube bundle, which is exposed out of one end of the sealing partition plate, in a non-welding 'tube expansion and extrusion' mode, so that the outer diameter of the thin-wall tube bundle is in interference fit with the sealing partition plate for sealing, the defects of tube deformation and the like caused by welding are avoided, and the process can achieve the purpose of nondestructive application of the thin-wall tube in engineering.
The manufacturing method is simple and reliable, the two ends of the heat exchanger monomer are provided with the waste flue gas return air chambers, the space arrangement access door is utilized, a high-pressure water gun can be used for cleaning each thin-wall tube bundle, the heat exchanger is cleaned without dead angles, small gaps are easier to process relative to plate heat exchangers, and therefore the problem that the service life of a waste heat recovery heat exchanger in the traditional process is short is solved.
Compared with the prior art, the invention has the beneficial effects that: the heat exchange effect is showing, removable heat exchanger monomer modularization free combination structure, and installation, transportation of being convenient for, tube bank structure are convenient for wash, have solved in the actual production along with the problem that operating duration extension produced the jam, and reasonable tube bank is arranged and does not have the welding assembly process and can obtain the resistance value equal with plate heat exchanger, has overcome traditional tubular heat exchanger bulky, heavy, the big defect of resistance.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic sectional view taken along line a-a of fig. 1.
Fig. 4 is a schematic perspective view of a heat exchanger unit according to the present invention.
Fig. 5 is a front view of a heat exchanger cell of the present invention.
Fig. 6 is a schematic sectional view (partial) along the direction C-C of fig. 5.
Fig. 7 is a partial enlarged structural view at M of fig. 6.
Fig. 8 is a schematic sectional view (partially in quarter) along the line B-B in fig. 5.
In the figure: 1. the high-temperature waste flue gas recovery device comprises a high-temperature waste flue gas inlet chamber, 2 a high-temperature side waste flue gas return gas chamber, 3 a low-temperature side waste flue gas return gas chamber, 4 a waste flue gas outlet, 5 a fresh air inlet chamber, 6 a fresh air outlet chamber, 7 a heat exchanger monomer, 701 a top frame, 702 an underframe, 703 a closed partition plate, 704 a thin-wall tube bundle, 705 an auxiliary fixing tube, 706 a connecting assembly, 707 a side plate, 708 a front support frame, a rear support frame, 709 a transverse stabilizing strip, 710 a longitudinal stabilizing strip, 711 a left support frame, a right support frame, 8 an access door, 9 a blower and 10 a condensate water collecting tube.
M-a fresh air outlet; n-fresh air inlet; q-waste flue gas inlet.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Referring to fig. 1 to 3, the tubular heat exchanger for recovering waste heat of the gypsum plasterboard drying process of the embodiment is provided with a rack with an overhaul platform, one end of the rack is provided with an air blower 9, the other end (the position of a tail heat exchanger monomer 7) is provided with a fresh air outlet chamber 6, the air blower 9 is connected with a fresh air inlet N, and the fresh air inlet chamber 5 output by the air blower 9 is divided into two flange connectors arranged in parallel.
A single group of heat exchange chambers is not stated, and two parallel square matrixes formed by two groups (2 rows by 3 pieces) of heat exchanger single bodies 7 are taken as an example and correspond to two parallel flange connecting ports of the fresh air inlet chamber 5. The square matrix formed by the two groups of heat exchanger monomers 7 forms two parallel series structures from one end of the air blower 9 to the fresh air outlet chamber 6, and the heat exchanger monomers 7 in the same group in the square matrix are connected in series through vertical flanges. In the series structure formed by the single heat exchanger 7, the upper end and the lower end of the single heat exchanger 7 are respectively connected into a whole through the waste flue gas returning air chamber 2 at the high temperature side and the waste flue gas returning air chamber 3 at the low temperature side. Each waste flue gas chamber of turning back all is cambered surface bend structure along waste flue gas walking route to be equipped with the insulating layer in the casing.
Each square matrix is divided into two parts: a high temperature heat exchange side and a low temperature heat exchange side; wherein, a group of high temperature heat exchange sides towards one end of the fresh air outlet chamber 6 is connected with the high temperature waste flue gas inlet chamber 1, and the low temperature heat exchange sides are connected with the waste flue gas outlet 4.
As shown in fig. 4 to 8, the heat exchanger unit 7 has a rectangular parallelepiped structure as a whole, a top frame 701 and a bottom frame 702 are respectively provided at the upper and lower sides, side plates 707 are respectively provided at the vertical surfaces, and the positions and the number of the connecting flanges are set by the side plates 707 according to the actual situation of the square matrix series connection. If one opposite side in the cuboid structure of the heat exchanger single body 7 is provided with a flange for connecting the heat exchanger single body 7 in series, the upper end and the lower end are respectively provided with a flange for connecting the waste flue gas returning air chamber 2 at the high temperature side and the waste flue gas returning air chamber 3 at the low temperature side, and the other opposite side is sealed by a side plate. The high-temperature side waste flue gas turning-back air chamber 2 and the low-temperature side waste flue gas turning-back air chamber 3 are both provided with an airflow distribution device.
A group of thin-wall tube bundles 704 which are vertically arranged are arranged in the air in the cuboid, and the thin-wall tube bundles 704 are arranged at equal intervals along the vertical plane of the gas flow direction and then are arranged layer by layer in parallel along the gas flow direction. The upper end and the lower end of the thin-wall tube bundle 704 are fixed with the outer diameter of the thin-wall tube bundle 704 through the closed partition plates 703, so that the waste flue gas channel and the fresh air channel are ensured not to interfere with each other.
In further detail, the upper and lower ends of the thin-wall tube bundle 704 are fixed to the closed partition 703 by expansion, that is, the tube opening of the thin-wall tube bundle 704 exposed out of one end (about 15mm) of the closed partition 704 is made into a tapered hole by expansion, the taper of the tapered hole is 20 ° ± 2 °, so that the outer diameter of the thin-wall tube bundle 704 forms a close fit with the closed partition 704. In a heat exchanger monomer 7, the vertically arranged tubes further comprise 4 auxiliary fixing tubes 705, the wall thickness of each auxiliary fixing tube 705 is 2mm, the 4 auxiliary fixing tubes 705 are uniformly distributed in a cuboid structure to serve as supports during manufacturing, the two end heads of each auxiliary fixing tube 705 are flush with the closed partition plate 704 and are connected by using a tube expansion process, and the tubes are fixed normally by adopting other modes such as welding and the like under the condition that the wall thickness is allowed; then assembling a thin-wall tube bundle 704 with the wall thickness of 0.8mm and carrying out an expansion process. The middle parts of all the pipes can be provided with a front support frame 708 and a rear support frame 711 to reinforce the whole heat exchange assembly (the pipe body and the closed partition plate 703); horizontal stabilizing strips 709 and vertical stabilizing strips 710 can be arranged between the single thin-wall tube bundles 704 to further ensure the shock absorption and the silence of the heat exchange chamber during working.
The sealing partition plate 703 is provided with flanges towards the upper end and the lower end of the heat exchanger single body 7, the sealing partition plate 703 is connected with the top frame 701 and the bottom frame 702 through a connecting assembly 706, and a sealing spacer is arranged between the top frame 701 and the bottom frame 702. Particularly, a natural elastic compression sealing structure is formed between the sealing partition plate and the inner walls of the top frame 701 and the bottom frame 702 in a sheet metal flanging mode, and the problem of thermal expansion of the tube bundle is solved.
And the parts of the high-temperature side waste flue gas returning air chamber 2, the low-temperature side waste flue gas returning air chamber 3, the waste flue gas outlet 4 and the fresh air outlet chamber 6 are respectively provided with an access door 8.
The condensed water collecting pipe is arranged at the position of the flue gas turning-back air chamber at the bottom, a plurality of flue gas turning-back air chambers can be connected together, generally speaking, the temperature of the collected condensed water has sixty-seven degrees, and the condensed water is used for batching production and is used as energy secondary utilization.
During operation, the blower 9 is started, the gate of the related air channel is opened, waste flue gas enters from the high-temperature waste flue gas inlet chamber 1 (the direction of a waste flue gas inlet Q in fig. 2), and flows out from the waste flue gas outlet 4 (the direction indicated by P in fig. 1) after passing through the heat exchanger monomers 7 and the waste flue gas return air chambers which are arranged in parallel and in series, and fresh air enters from the fresh air inlet N connected with the blower 9 and flows out from the fresh air outlet chamber (a fresh air outlet M in fig. 1) after heat exchange.
When the waste flue gas is cleaned, the high-pressure water gun is used for washing through the access door 8.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any process, method, structure, etc. that may be simply changed are within the scope of the present invention without departing from the principle of the present invention.
Claims (10)
1. A tubular heat exchanger for recovering waste heat in a paper-surface gypsum board drying process comprises a blower (9) and a heat exchange chamber, and is characterized in that the heat exchange chamber is a square matrix formed by a single group or a plurality of groups of heat exchanger monomers (7), and the number of the heat exchanger monomers is modularly combined according to actual ventilation; the high-temperature heat exchange side part is connected to the high-temperature waste flue gas inlet chamber (1), and the low-temperature heat exchange side part is connected to the waste flue gas outlet (4); the air blower is connected with the heat exchanger monomer through a fresh air inlet chamber (5), and a fresh air outlet chamber (6) is arranged at the position of the tail heat exchanger monomer.
2. The tubular heat exchanger for recovering the waste heat of the gypsum plasterboard drying process according to claim 1, wherein the heat exchanger single body (7) is of a cuboid structure, a group of thin-wall tube bundles (704) are arranged in the cuboid of the heat exchanger single body in the air, and the outer diameters of the thin-wall tube bundles are fixed at the upper end and the lower end of each thin-wall tube bundle by closed partition plates (703).
3. The tubular heat exchanger for recovering waste heat of a gypsum plasterboard drying process according to claim 2, wherein the upper and lower ends of the thin-walled tube bundle (704) are fixed to the closed partition (703) by means of a tightening process, that is, a tube opening of the thin-walled tube bundle exposed out of one end of the closed partition is a tapered hole, and the outer diameter of the thin-walled tube bundle is in interference fit with an opening in the closed partition.
4. The tubular heat exchanger for recovering the waste heat of the gypsum plasterboard drying process according to claim 1, wherein flanges are respectively arranged at the upper end and the lower end of the rectangular structure of the heat exchanger single body (7).
5. The tubular heat exchanger for recovering the waste heat in the gypsum plasterboard drying process according to claim 1 or 4, wherein a matrix formed by the heat exchanger monomers (7) forms a series connection structure of a fresh air walking route from one end of the air blower (9) to the fresh air outlet chamber (6).
6. The tubular heat exchanger for recovering the waste heat of the thistle board drying process of claim 5, wherein the heat exchanger units (7) are connected in series through vertical flanges.
7. The tubular heat exchanger for recovering the waste heat in the thistle board drying process of claim 1, wherein the fresh air inlet chamber (5) is connected with a heat exchanger single body (7) on a low-temperature heat exchange side.
8. The tubular heat exchanger for recovering the waste heat of the gypsum plasterboard drying process of claim 5, wherein the heat exchanger single bodies (7) are connected in series through waste flue gas returning air chambers along a waste flue gas traveling route while being in a series structure.
9. The tubular heat exchanger for recovering the waste heat in the gypsum plasterboard drying process according to claim 8, wherein the waste flue gas returning air chamber portion, the waste flue gas outlet (4) portion and the fresh air outlet chamber (6) portion are provided with access doors (8).
10. The tubular heat exchanger for recovering waste heat of a gypsum plasterboard drying process according to claim 8, wherein the waste flue gas return air chamber is in a curved structure along a waste flue gas traveling path, and an air flow distribution device is arranged in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110966268.0A CN113624033A (en) | 2021-08-23 | 2021-08-23 | Tubular heat exchanger for recovering waste heat of thistle board drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110966268.0A CN113624033A (en) | 2021-08-23 | 2021-08-23 | Tubular heat exchanger for recovering waste heat of thistle board drying process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113624033A true CN113624033A (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110966268.0A Pending CN113624033A (en) | 2021-08-23 | 2021-08-23 | Tubular heat exchanger for recovering waste heat of thistle board drying process |
Country Status (1)
| Country | Link |
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| CN (1) | CN113624033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115540561A (en) * | 2022-10-13 | 2022-12-30 | 中国新型建材设计研究院有限公司 | Vertically and horizontally combined gypsum board dryer |
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| GB806343A (en) * | 1954-09-10 | 1958-12-23 | Henschel & Sohn Gmbh | Improvements in cross-flow heat exchangers |
| CN102636050A (en) * | 2012-04-27 | 2012-08-15 | 华南理工大学 | Compact type flue gas waste heat recovery heat exchanger |
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| CN203964688U (en) * | 2014-07-15 | 2014-11-26 | 黄冈市华窑中亚窑炉有限责任公司 | Multisection type dual-layer face air heat exchanger for a kind of kiln |
| CN204757710U (en) * | 2015-06-08 | 2015-11-11 | 洛阳隆华传热节能股份有限公司 | Modularization flue formula thermal -arrest equipment |
| CN206846778U (en) * | 2017-05-31 | 2018-01-05 | 重庆市商顺换热设备有限公司 | A kind of air preheater |
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2021
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| GB806343A (en) * | 1954-09-10 | 1958-12-23 | Henschel & Sohn Gmbh | Improvements in cross-flow heat exchangers |
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| CN206846778U (en) * | 2017-05-31 | 2018-01-05 | 重庆市商顺换热设备有限公司 | A kind of air preheater |
| CN209726876U (en) * | 2019-03-27 | 2019-12-03 | 西安西热锅炉环保工程有限公司 | A kind of titanium tube of thin wall flue gas condenser with maintenance structure |
| CN110132033A (en) * | 2019-06-10 | 2019-08-16 | 四川省鑫广达环保设备有限责任公司 | A kind of horizontal tubular heat exchanger of novel air |
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| Title |
|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115540561A (en) * | 2022-10-13 | 2022-12-30 | 中国新型建材设计研究院有限公司 | Vertically and horizontally combined gypsum board dryer |
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