CN112304147A - Methyl chloride waste heat recovery device's anti-shock mounting - Google Patents
Methyl chloride waste heat recovery device's anti-shock mounting Download PDFInfo
- Publication number
- CN112304147A CN112304147A CN202011147553.1A CN202011147553A CN112304147A CN 112304147 A CN112304147 A CN 112304147A CN 202011147553 A CN202011147553 A CN 202011147553A CN 112304147 A CN112304147 A CN 112304147A
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- Prior art keywords
- channel plate
- water
- layer
- baffle
- layer channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000002918 waste heat Substances 0.000 title claims abstract description 15
- 229940050176 methyl chloride Drugs 0.000 title claims description 7
- 230000000703 anti-shock Effects 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 230000000670 limiting effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009991 scouring Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- FBBDOOHMGLLEGJ-UHFFFAOYSA-N methane;hydrochloride Chemical compound C.Cl FBBDOOHMGLLEGJ-UHFFFAOYSA-N 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention discloses a scour prevention device of a chloromethane waste heat recovery device, which comprises a shell, wherein the shell is provided with a water inlet, the shell is internally provided with a heat exchange tube, the water inlet is positioned above the heat exchange tube, and a scour prevention device fixedly connected with the shell is arranged at a gap between the water inlet and the heat exchange tube. Because the speed of water inflow is different every time, the inflow is different, the very good scour protection effect is difficult to play to the ordinary scour protection device, this apparatus can play a very good scour protection effect through the hemispherical baffle, spring, water leakage mouth, when the waterflow is too small, the impact force of the waterflow is not enough to make the baffle drop, the waterflow falls on the heat exchange tube along the first floor channel plate; when the water flow is large, the impact force of the water flow enables the baffle to descend, the descending depth of the baffle is related to the water inflow, the larger the water inflow is, the larger the descending depth of the baffle is, and the larger the water outlet capacity of the water leakage port is. This application is through reposition of redundant personnel many times, and the striking of many times rivers makes the impact force that gets into the casing rivers reduce greatly, is favorable to improving the life-span of heat exchange tube, has prolonged the live time of device.
Description
Technical Field
The invention relates to chemical equipment, in particular to an anti-impact device of a chloromethane waste heat recovery device.
Background
The main production process of methyl chloride products is methane high-temperature chlorination reaction, the reaction is usually carried out at 380-450 ℃, and due to the high temperature of reaction products, the sensible heat of materials has great utilization value. If the traditional circulating water cooling process is adopted, the high-grade reaction heat is changed into low-grade heat which can not be utilized along with the taking away of the circulating water, so that great waste is caused. If sensible heat of the methane chloride in a higher temperature section is used for byproduct steam and is cooled by circulating cooling water, the consumption of the cooling water can be reduced, and thus comprehensive utilization of reaction waste heat is realized.
Methyl chloride waste heat recovery device comprises steam pocket and evaporation zone, the effect of evaporation zone is the same with the heat exchanger, the gaseous process heat exchange tube of methyl chloride of high temperature, the heat on the heat exchange tube is taken away to the low temperature water in the simple body, the steam of production is retrieved by the steam pocket, nevertheless when design, manufacturing the evaporation zone, impingement device is neglected as auxiliary element easily to make the evaporation zone can not realize safe and reliable operation, set up reasonable effectual impingement structure, can prolong the life of evaporation zone.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the anti-impact device of the chloromethane waste heat recovery device.
In order to achieve the purpose, the invention provides the following technical scheme: a scour prevention device of a chloromethane waste heat recovery device comprises a shell, wherein the shell is provided with a water inlet, a heat exchange tube is arranged in the shell, the water inlet is positioned above the heat exchange tube, a scour prevention device fixedly connected with the shell is arranged at the interval between the water inlet and the heat exchange tube,
wherein the anti-impact device comprises a first layer channel plate, a second layer channel plate, a third layer channel plate, a tubular connecting piece and a spring which are sequentially arranged at intervals in the vertical direction, the first layer channel plate is fixedly connected with the shell through a connecting rod, the first layer channel plate is provided with a through hole,
the tubular connecting piece penetrates through the second layer channel plate and is fixedly connected with the second layer channel plate, the upper end of the tubular connecting piece is fixedly connected with the first layer channel plate, the lower end of the tubular connecting piece is fixedly connected with the third layer channel plate, the upper end of the tubular connecting piece is opened, a water baffle is arranged in the tubular connecting piece, one end of the spring is fixedly connected with the bottom of the tubular pile connecting piece, the other end of the spring is fixedly connected with the water baffle, the spring jacks up the water baffle to block the,
a water leakage port is arranged on the circumference of the tubular connecting piece and is positioned between the lower end surface of the first layer of channel plate and the upper end surface of the second layer of channel plate,
the first layer channel plate, the second layer channel plate and the third layer channel plate are strip-shaped plates with skirt edges arranged in the circumferential direction, the skirt edges at two ends of the strip-shaped plates are provided with notches,
the second layer of channel plate is provided with water leakage holes which are positioned right above the third layer of channel plate.
On the basis of the above-described aspect, it is preferable that the through-hole is located at the center of the first-layer channel plate.
On the basis of the scheme, preferably, the two ends of the first layer channel plate, the second layer channel plate and the third layer channel plate are crab claw-shaped, and the gap is positioned at the crab claw-shaped end part.
On the basis of the above scheme, preferably, the through hole comprises an upper-stage hole and a lower-stage hole, the diameter of the upper-stage hole is smaller than that of the lower-stage hole to form a step surface,
the breakwater includes the baffle of hemisphere, and the concave surface of baffle is towards the water inlet, and the circumference of baffle is provided with the surrounding edge, and the surrounding edge includes inner ring limit, outer annular limit, and the external diameter and the upper segment hole on inner ring limit match, and the external diameter and the hypomere hole on outer annular limit match, and the height that the inner ring limit exceeds the outer annular limit matches with the degree of depth in upper segment hole.
On the basis of the scheme, preferably, the lower end surface of the annular edge is also provided with an annular flange which is in contact sealing fit with the inner wall of the tubular connecting piece,
in the up-down direction, the width of the annular flange is not less than the width of the water leakage port.
On the basis of the scheme, preferably, the bottom of the tubular connecting piece is fixedly provided with a limiting piece, a T-shaped groove is formed in the limiting piece, the lower end of the spring is fixed to the bottom of the T-shaped groove, the upper end of the spring is fixedly connected with the bottom of the inverted T-shaped piece, the inverted T-shaped piece is located in the T-shaped groove, and the rod portion of the T-shaped piece extends out of the T-shaped groove and is fixedly connected with the water.
On the basis of the above scheme, preferably, the second-layer channel plate is provided with a deceleration strip.
Compared with the prior art, the invention has the beneficial effects that:
1. because the speed of intaking at every turn is different, and the inflow is different, and fine scour protection effect is hardly played to general scour protection device, and this device passes through hemisphere type baffle, and the spring leaks the mouth of a river and can play fine scour protection effect. When the water flow is too small and the impact force of the water flow is not enough to enable the baffle plate to descend, the water flow falls on the heat exchange tube along the first layer of channel plate; when the water flow is large, the impact force of the water flow enables the baffle to descend, the descending depth of the baffle is related to the water inflow, the larger the water inflow is, the larger the descending depth of the baffle is, and the larger the water outlet capacity of the water leakage port is.
2. Although general scour protection device plays certain cushioning effect to rivers, rivers all are roughly the same in the place that erodees the heat exchange tube at every turn, produce heat exchange tube local corrosion easily, and this device adopts the unequal passageway of three length, will get into the rivers of barrel and divide into the tiny rivers of stranded, and the position of every rivers impact heat exchange tube is different and the impact force of rivers is less, also reduces the erosion of heat exchange tube.
3. When rivers entered into the second floor passageway, it is great to explain the impact force of rivers, still sets up deceleration strip and water leakage mouth on the second floor passageway, and the deceleration strip can slow down the speed of rivers, and water leakage mouth can give third floor's passageway with partly rivers branch to this plays the effect of reposition of redundant personnel speed reduction.
4. The hemispherical baffle plate has the advantages that the concave surface of the hemispherical baffle plate faces the water inlet, so that when water enters, certain accumulated water is arranged on the baffle plate, the accumulated water on the baffle plate is firstly impacted by water flow, the accumulated water flows to play a buffering role, the baffle plate is impacted, the impact force of the water flow on the baffle plate is reduced, and the service life of the device is prolonged.
5. Due to the crab-claw-shaped arrangement of the two ends of the first, second and third layers of channel plates, the two water flows can be impacted again, so that the impact force of the water flows is reduced.
6. This application is through reposition of redundant personnel many times, and the striking of many times rivers makes the impact force that gets into the casing rivers reduce greatly, is favorable to improving the life-span of heat exchange tube, has prolonged the live time of device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a first, second and third layer channel plate;
FIG. 3 is a perspective view of a first, second and third layer channel plate;
FIG. 4 is a schematic structural view of a second layer of channel plates;
fig. 5 is a schematic view of the construction of the tubular connection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention, and in the present application, detachable means a connection mode that can be separated from another part without changing the original structure of the part.
As shown in fig. 1-5, the anti-impact device of the chloromethane waste heat recovery device comprises a shell 1, a water inlet 2 is arranged on the shell, a heat exchange tube 3 is arranged in the shell, the water inlet is positioned above the heat exchange tube, an anti-impact device fixedly connected with the shell is arranged at the interval between the water inlet and the heat exchange tube,
wherein the anti-impact device comprises a first layer channel plate 4, a second layer channel plate 5, a third layer channel plate 6, a tubular connecting piece 7 and a spring 8 which are sequentially arranged at intervals in the vertical direction, the first layer channel plate is fixedly connected with the shell through a connecting rod 10, the first layer channel plate is provided with a through hole 11,
the tubular connecting piece penetrates through the second layer of channel plate and is fixedly connected with the second layer of channel plate (such as Y-shaped joint type bolt fixing in figure 2, the installation and the maintenance are convenient), the upper end of the tubular connecting piece is fixedly connected (such as bolt fixing) with the first layer of channel plate, the lower end is fixedly connected with the third layer of channel plate, the upper end of the tubular connecting piece is opened, a water baffle plate 9 is arranged in the tubular connecting piece, one end of a spring is fixedly connected with the bottom of the tubular pile connecting piece, the other end of the spring is fixedly connected with the water baffle plate, the spring jacks up the,
a water leakage port 12 is arranged on the circumference of the tubular connecting piece and is positioned between the lower end surface of the first layer channel plate and the upper end surface of the second layer channel plate,
the first layer channel plate, the second layer channel plate and the third layer channel plate are strip-shaped plates provided with skirt edges 13 in the circumferential direction, the skirt edges at two ends of the strip-shaped plates are provided with notches,
the second layer of channel plate is provided with water leakage holes 14 which are positioned right above the third layer of channel plate.
The through hole is located at the center of the first-layer channel plate.
The two ends of the first layer of channel plate, the second layer of channel plate and the third layer of channel plate are crab claw-shaped, and the gap is positioned at the end part of the crab claw shape.
The through hole comprises an upper section hole and a lower section hole, the diameter of the upper section hole is smaller than that of the lower section hole to form a step surface,
the breakwater includes the baffle of hemisphere, and the concave surface of baffle is towards the water inlet, and the circumference of baffle is provided with the surrounding edge, and the surrounding edge includes inner ring limit, outer annular limit, and the external diameter and the upper segment hole on inner ring limit match, and the external diameter and the hypomere hole on outer annular limit match, and the height that the inner ring limit exceeds the outer annular limit matches with the degree of depth in upper segment hole.
The lower end surface of the annular edge is also provided with an annular flange which is in contact sealing fit with the inner wall of the tubular connecting piece,
in the up-down direction, the width of the annular flange is not less than the width of the water leakage port.
The bottom of the tubular connecting piece is fixedly provided with a limiting piece, a T-shaped groove is formed in the limiting piece, the lower end of the spring is fixed to the bottom of the T-shaped groove, the upper end of the spring is fixedly connected with the bottom of an inverted T-shaped piece, the inverted T-shaped piece is located in the T-shaped groove, and the rod portion of the T-shaped piece extends out of the T-shaped groove and is fixedly connected with the.
The first, second and third layers of channel plates have approximately the same structure, the lengths are sequentially decreased, the middle part is a circular plate, two sides of the circular plate are provided with symmetrical 'crab claw' shaped structures, and the periphery is provided with iron enclosing walls (skirt edges); the second layer of channels are also provided with speed reducing strips 15 and water leakage holes.
The method comprises the following specific implementation steps: the diameter of the water outlet is slightly larger than the maximum outer diameter of the hemispherical concave surface of the water baffle plate and is two thirds of the maximum outer diameter of the central circular plate of the first layer of channel, so that water can fall on the anti-impact device when entering the shell from the water outlet. When rivers got into the casing from the water inlet owing to lack the restraint of pipeline, rivers can disperse, and partly rivers fall on first layer channel board, and all the other rivers fall on the baffle, receive the effect of rivers impact, and the baffle descends, and rivers flow to second floor channel board from leaking the mouth, and partial rivers still can flow to third layer channel board from the hole that leaks on the second floor channel board on, flow from the breach on the third layer channel board again. The water flow is uniformly distributed on the heat exchange tube for multiple times, so that the impact force on the heat exchange tube is greatly reduced, the impact corrosion of the tube plate and the heat exchange tube is reduced, and the service life of the evaporation section is effectively prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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.
Claims (7)
1. A scour protection device of a chloromethane waste heat recovery device is characterized by comprising a shell, wherein the shell is provided with a water inlet, a heat exchange tube is arranged in the shell, the water inlet is positioned above the heat exchange tube, a scour protection device fixedly connected with the shell is arranged at the interval between the water inlet and the heat exchange tube,
wherein the anti-impact device comprises a first layer channel plate, a second layer channel plate, a third layer channel plate, a tubular connecting piece and a spring which are sequentially arranged at intervals in the vertical direction, the first layer channel plate is fixedly connected with the shell through a connecting rod, the first layer channel plate is provided with a through hole,
the tubular connecting piece penetrates through the second layer channel plate and is fixedly connected with the second layer channel plate, the upper end of the tubular connecting piece is fixedly connected with the first layer channel plate, the lower end of the tubular connecting piece is fixedly connected with the third layer channel plate, the upper end of the tubular connecting piece is opened, a water baffle is arranged in the tubular connecting piece, one end of the spring is fixedly connected with the bottom of the tubular pile connecting piece, the other end of the spring is fixedly connected with the water baffle, the spring jacks up the water baffle to block the,
a water leakage port is arranged on the circumference of the tubular connecting piece and is positioned between the lower end surface of the first layer of channel plate and the upper end surface of the second layer of channel plate,
the first layer channel plate, the second layer channel plate and the third layer channel plate are strip-shaped plates with skirt edges arranged in the circumferential direction, the skirt edges at two ends of the strip-shaped plates are provided with notches,
the second layer of channel plate is provided with water leakage holes which are positioned right above the third layer of channel plate.
2. The anti-impingement device for a methyl chloride waste heat recovery device of claim 1, wherein the through hole is located at a center of the first layer of channel plate.
3. The anti-impact device of the chloromethane waste heat recovery device as set forth in claim 1, wherein the first layer channel plate, the second layer channel plate and the third layer channel plate are crab claw-shaped at both ends, and the notch is located at the end of the crab claw-shaped channel plate.
4. The anti-impact device of the chloromethane waste heat recovery device as set forth in claim 1, wherein the through hole comprises an upper hole and a lower hole, the diameter of the upper hole is smaller than that of the lower hole to form a step surface,
the breakwater includes the baffle of hemisphere, and the concave surface of baffle is towards the water inlet, and the circumference of baffle is provided with the surrounding edge, and the surrounding edge includes inner ring limit, outer annular limit, and the external diameter and the upper segment hole on inner ring limit match, and the external diameter and the hypomere hole on outer annular limit match, and the height that the inner ring limit exceeds the outer annular limit matches with the degree of depth in upper segment hole.
5. The anti-scouring device for the chloromethane waste heat recovery device according to claim 4, characterized in that the lower end surface of the annular edge is further provided with an annular rib, the annular rib is in contact and sealing fit with the inner wall of the tubular connecting piece,
in the up-down direction, the width of the annular flange is not less than the width of the water leakage port.
6. The anti-impact device for the chloromethane residual heat recovery device according to claim 5, wherein the limiting member is fixedly mounted at the bottom of the tubular connecting member, the limiting member is provided with a T-shaped groove, the lower end of the spring is fixed at the bottom of the T-shaped groove, the upper end of the spring is fixedly connected with the bottom of the inverted T-shaped member, the inverted T-shaped member is positioned in the T-shaped groove, and the rod part of the T-shaped member extends out of the T-shaped groove and is fixedly connected with the water.
7. The anti-impact device for the methyl chloride waste heat recovery device according to claim 6, wherein a deceleration strip is arranged on the second-layer channel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147553.1A CN112304147B (en) | 2020-10-23 | 2020-10-23 | Methyl chloride waste heat recovery device's anti-shock mounting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147553.1A CN112304147B (en) | 2020-10-23 | 2020-10-23 | Methyl chloride waste heat recovery device's anti-shock mounting |
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| Publication Number | Publication Date |
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| CN112304147A true CN112304147A (en) | 2021-02-02 |
| CN112304147B CN112304147B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011147553.1A Active CN112304147B (en) | 2020-10-23 | 2020-10-23 | Methyl chloride waste heat recovery device's anti-shock mounting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234694A (en) * | 2021-11-23 | 2022-03-25 | 淮阴工学院 | Anti-impact baffle plate of chloromethane waste heat recovery device |
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| CN211113993U (en) * | 2019-11-28 | 2020-07-28 | 杜聪 | Hydraulic engineering desilting device |
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2020
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| US5653282A (en) * | 1995-07-19 | 1997-08-05 | The M. W. Kellogg Company | Shell and tube heat exchanger with impingement distributor |
| CN204973184U (en) * | 2015-08-01 | 2016-01-20 | 浙江江腾环保科技有限公司 | Sedimentation tank center draft tube |
| CN207456264U (en) * | 2017-09-13 | 2018-06-05 | 江苏中一环保科技股份有限公司 | A kind of erosion control flow diverter of forced circulation heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114234694A (en) * | 2021-11-23 | 2022-03-25 | 淮阴工学院 | Anti-impact baffle plate of chloromethane waste heat recovery device |
| CN114234694B (en) * | 2021-11-23 | 2023-09-29 | 淮阴工学院 | Anti-impact baffle plate of chloromethane waste heat recovery device |
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| CN112304147B (en) | 2022-06-03 |
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