CN214842652U - Heat exchanger for alcohol recovery - Google Patents
Heat exchanger for alcohol recovery Download PDFInfo
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- CN214842652U CN214842652U CN202121213474.6U CN202121213474U CN214842652U CN 214842652 U CN214842652 U CN 214842652U CN 202121213474 U CN202121213474 U CN 202121213474U CN 214842652 U CN214842652 U CN 214842652U
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Abstract
The utility model discloses a heat exchanger for alcohol recovery, which belongs to the technical field of heat exchangers and comprises a shell, wherein a front port and a rear port of the shell are respectively connected with a front tube box and a rear tube box, and the inner sides of the front end and the rear end of the shell are respectively provided with a front tube plate and a rear tube plate; the first partition plate divides an area defined by the shell, the front tube plate and the rear tube plate into an upper heat exchange cavity and a lower heat exchange cavity; the rear tube box and the rear tube plate enclose a first gas-liquid separation cavity; and a second partition plate is arranged in the front tube box and divides the area enclosed by the front tube box and the front tube plate into a second gas-liquid separation cavity at the upper part and a gas inlet cavity at the lower part. The utility model provides a heat exchanger is used in alcohols recovery makes alcohols steam carry out once preseparation in first gas-liquid separation chamber, makes the condensation for liquid alcohols by timely separation at the flow in-process, has improved gas-liquid separation's efficiency in limited heat transfer space.
Description
Technical Field
The utility model relates to a heat exchanger is used in alcohols recovery belongs to heat exchanger technical field.
Background
Low molecular weight alcohols, mainly methanol and ethanol, are widely used as solvents and detergents in industrial applications. During use, a portion of these alcohols are consumed and a portion are contaminated and remain in the system. Contaminated alcohols present not only safety hazards but also environmental pollution if discharged directly into the environment. Therefore, in the actual production, the alcohol needs to be purified and reused. The alcohol recovery process mainly comprises the steps of evaporation and condensation, and in the condensation process, gaseous alcohol transfers heat to a refrigerant in a heat exchanger, so that the temperature is reduced and the alcohol is condensed into liquid, and the purpose of separating the alcohol from air is achieved. At present, a heat exchanger for recovering alcohols is basically composed of a shell, a heat exchange tube bundle, a tube plate, a baffle plate, a tube box and other parts, alcohol steam flows in the heat exchange tube, and cooling water flows outside the tube. The existing heat exchanger for recovering alcohols usually needs a plurality of heat exchangers to be connected in series due to the limitation of condensation efficiency, and the alcohols can be liquefied and fully recovered through condensation for many times.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that prior art exists, provide a heat exchanger is used in alcohols recovery, can make alcohols steam once preseparation in first gas-liquid separation chamber, improved gas-liquid separation's efficiency in limited heat transfer space.
The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:
a heat exchanger for alcohol recovery comprises a cylindrical shell, wherein a front port and a rear port of the shell are respectively connected with a front tube box and a rear tube box, the inner sides of the front end and the rear end of the shell are respectively provided with a front tube plate and a rear tube plate, and the edges of the front tube plate and the rear tube plate are respectively fixed on the inner walls of the front end and the rear end of the shell;
a first partition plate is arranged in the shell and divides the area surrounded by the shell, the front tube plate and the rear tube plate into an upper heat exchange cavity and a lower heat exchange cavity;
the rear end of the first partition plate is provided with a baffling port which is communicated with the upper heat exchange cavity and the lower heat exchange cavity;
a plurality of heat exchange tubes are respectively arranged in the upper heat exchange cavity and the lower heat exchange cavity, and the front ends and the rear ends of the heat exchange tubes respectively penetrate through and are fixed in tube holes in the front tube plate and the rear tube plate;
the rear tube box and the rear tube plate enclose a first gas-liquid separation cavity, a first liquid discharge port is formed in the rear tube box, and the first liquid discharge port is communicated with the lower portion of the first gas-liquid separation cavity;
a second partition plate is arranged in the front pipe box and divides a region defined by the front pipe box and the front pipe plate into a second gas-liquid separation cavity at the upper part and a gas inlet cavity at the lower part, a gas inlet, a second liquid outlet and a gas outlet are arranged on the front pipe box, the gas inlet is communicated with the gas inlet cavity, the second liquid outlet is communicated with the lower part of the second gas-liquid separation cavity, and the gas outlet is communicated with the upper part of the second gas-liquid separation cavity;
the shell is provided with a water inlet and a water outlet, the water inlet is communicated with the front end of the upper heat exchange cavity, and the water outlet is communicated with the front end of the lower heat exchange cavity.
Preferably, a plurality of baffling pore plates are respectively arranged in the upper heat exchange cavity and the lower heat exchange cavity, and the heat exchange tubes penetrate through tube holes in the baffling pore plates.
Preferably, the baffling pore plates are arc-shaped, and the adjacent baffling pore plates in the upper heat exchange cavity and the lower heat exchange cavity are arranged in a vertical reverse direction.
Benefits of the present application include, but are not limited to:
the utility model provides a heat exchanger is retrieved to alcohols makes alcohols steam once preseparation through the flow direction and the gas-liquid separation opportunity of reasonable setting cooling water and alcohols steam in first gas-liquid separation chamber, makes the condensation for liquid alcohols by timely separation at the in-process that flows, has improved gas-liquid separation's efficiency in limited heat transfer space. And the higher-temperature alcohol steam at the front condensation section exchanges heat with the cooling water after the temperature of the rear condensation section is raised, and the lower-temperature alcohol steam at the rear condensation section exchanges heat with the fresh low-temperature cooling water, so that the heat transfer efficiency and the utilization effect of the cooling water are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural view of the heat exchanger for alcohol recovery provided by the present invention;
in the figure, 100, the housing; 110. a water inlet; 120. a water outlet; 210. a front header; 220. a rear channel box; 310. a front tube sheet; 320. a rear tube plate; 410. a first separator; 411. a baffling port; 420. a second separator; 500. a heat exchange pipe; 610. a first gas-liquid separation chamber; 611. a first drain port; 620. a second gas-liquid separation chamber; 621. an air inlet; 622. a second liquid discharge port; 623. an exhaust port; 700. a baffle orifice plate.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein. Accordingly, the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the heat exchanger for recovering alcohols according to the present invention comprises a cylindrical casing 100, wherein a front end opening and a rear end opening of the casing 100 are respectively connected with a front tube box 210 and a rear tube box 220, a front tube plate 310 and a rear tube plate 320 are respectively disposed at the inner sides of the front end and the rear end of the casing 100, and the edges of the front tube plate 310 and the rear tube plate 320 are respectively fixed on the inner walls of the front end and the rear end of the casing 100;
a first partition plate 410 is arranged in the shell 100, the first partition plate 410 divides an area surrounded by the shell 100, the front tube plate 310 and the rear tube plate 320 into an upper heat exchange cavity and a lower heat exchange cavity, and the upper heat exchange cavity and the lower heat exchange cavity provide heat exchange spaces for alcohol steam, air and other non-condensable gases;
a baffling port 411 is arranged at the rear end of the first partition plate 410, the baffling port 411 is communicated with the upper heat exchange cavity and the lower heat exchange cavity, and cooling water in the upper heat exchange cavity can flow into the lower heat exchange cavity through the baffling port 411;
a plurality of heat exchange tubes 500 are respectively arranged in the upper heat exchange cavity and the lower heat exchange cavity, the front ends and the rear ends of the heat exchange tubes 500 respectively penetrate through and are fixed in tube holes on the front tube plate 310 and the rear tube plate 320, the front tube plate 310 and the rear tube plate 320 play a role in fixing the heat exchange tubes 500, and the front ends and the rear ends of the heat exchange tubes 500 are communicated with the front tube box 210 and the rear tube box 220 after penetrating through the front tube plate 310 and the rear tube plate 320;
the rear tube box 220 and the rear tube plate 320 enclose a first gas-liquid separation chamber 610, a first liquid discharge port 611 is formed in the rear tube box 220, and the first liquid discharge port 611 is communicated with the lower portion of the first gas-liquid separation chamber 610;
a second partition plate 420 is arranged in the front tube box 210, the second partition plate 420 divides the region enclosed by the front tube box 210 and the front tube plate 310 into an upper second gas-liquid separation cavity 620 and a lower gas inlet cavity, a gas inlet 621, a second liquid outlet 622 and a gas outlet 623 are arranged on the front tube box 210, the gas inlet 621 is communicated with the gas inlet cavity, the second liquid outlet 622 is communicated with the lower part of the second gas-liquid separation cavity 620, and the gas outlet 623 is communicated with the upper part of the second gas-liquid separation cavity 620;
the shell 100 is provided with a water inlet 110 and a water outlet 120, the water inlet 110 is communicated with the front end of the upper heat exchange cavity, the water outlet 120 is communicated with the front end of the lower heat exchange cavity, and cooling water enters the upper heat exchange cavity from the water inlet 110 and then is discharged out of the lower heat exchange cavity from the water outlet 120.
When the distillation tower works, alcohol steam flowing out of the distillation tower is introduced into the air inlet cavity from the air inlet 621, the alcohol steam enters the air inlet cavity and then enters the heat exchange tube 500 inside the air inlet cavity from the front end of the lower heat exchange cavity, and meanwhile, cold water enters the upper heat exchange cavity from the water inlet 110 at the front end of the upper heat exchange cavity and enters the lower heat exchange cavity through the baffling port 411. The alcohol vapor is heat-exchanged with cold water in the process of flowing in the heat exchange tube 500 in the lower heat exchange cavity to reduce the temperature, so that the alcohol vapor is gradually condensed into liquid and separated from gas. After the gas-liquid mixture in the heat exchange tube 500 in the lower heat exchange cavity is discharged to the first gas-liquid separation cavity 610, the alcohol condensed into liquid is gathered at the lower part of the first gas-liquid separation cavity 610 and slowly flows out from the first liquid discharge port 611, the gas is gathered at the upper part of the first gas-liquid separation cavity 610 and enters the heat exchange tube 500 in the upper heat exchange cavity, and in the flowing process of the heat exchange tube 500 in the upper heat exchange cavity, the alcohol vapor is further condensed into liquid and is discharged to the second gas-liquid separation cavity 620 together with the gas. In the second gas-liquid separation chamber 620, the liquid alcohol collects downward and is discharged from the second drain port 622, and the gas is discharged from the gas discharge port 623.
It can be seen that, the utility model provides a heat exchanger is retrieved to alcohols makes alcohols steam once preseparation at first gas-liquid separation chamber 610 through the flow direction and the gas-liquid separation opportunity of reasonable setting cooling water and alcohols steam, has carried out the secondary separation in the second separation intracavity, makes the condensation for liquid alcohols by timely separation at the in-process that flows, has improved gas-liquid separation's efficiency in limited heat transfer space. And the higher-temperature alcohol steam at the front condensation section exchanges heat with the cooling water after the temperature of the rear condensation section is raised, and the lower-temperature alcohol steam at the rear condensation section exchanges heat with the fresh low-temperature cooling water, so that the heat transfer efficiency and the utilization effect of the cooling water are improved.
In a preferred embodiment, a plurality of baffle plates 700 are respectively disposed in the upper and lower heat exchange chambers, and the heat exchange pipe 500 passes through the pipe holes of the baffle plates 700. When the cooling water flows in the upper heat exchange cavity and the lower heat exchange cavity, the baffle plate enables the cooling water to flow along the curve, the flow velocity distribution of the cooling water is improved, the effective circulation area of the cooling water is increased, and the heat exchange effect of the cooling water and the alcohol steam in the heat exchange tube 500 is improved.
In one embodiment, the baffle plates 700 are arcuate, and the adjacent baffle plates 700 in the upper heat exchange chamber and the adjacent baffle plates 700 in the lower heat exchange chamber are arranged in opposite directions, so that the cooling water flows in a vertically circuitous manner to exchange heat with the alcohol steam in the heat exchange tubes 500. Specifically, as shown in fig. 1, the bottom of the baffle aperture plate 700 in the upper heat exchange chamber close to the baffle opening 411 is fixed on the first partition plate 410, and the cooling water flows from the baffle opening 411 to the lower heat exchange chamber after passing through the baffle aperture plate 700, and continues to flow under the guidance of the baffle aperture plate 700 in the lower heat exchange chamber.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above-mentioned specific embodiments can not be regarded as the restriction to the protection scope of the present invention, to the technical personnel in this technical field, it is right that any replacement improvement or transformation that the embodiment of the present invention made all fall within the protection scope of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (3)
1. A heat exchanger for alcohol recovery is characterized by comprising a cylindrical shell, wherein a front port and a rear port of the shell are respectively connected with a front tube box and a rear tube box;
a first partition plate is arranged in the shell and divides the area surrounded by the shell, the front tube plate and the rear tube plate into an upper heat exchange cavity and a lower heat exchange cavity;
the rear end of the first partition plate is provided with a baffling port which is communicated with the upper heat exchange cavity and the lower heat exchange cavity;
a plurality of heat exchange tubes are respectively arranged in the upper heat exchange cavity and the lower heat exchange cavity, and the front ends and the rear ends of the heat exchange tubes respectively penetrate through and are fixed in tube holes in the front tube plate and the rear tube plate;
the rear tube box and the rear tube plate enclose a first gas-liquid separation cavity, a first liquid discharge port is formed in the rear tube box, and the first liquid discharge port is communicated with the lower portion of the first gas-liquid separation cavity;
a second partition plate is arranged in the front pipe box and divides a region defined by the front pipe box and the front pipe plate into a second gas-liquid separation cavity at the upper part and a gas inlet cavity at the lower part, a gas inlet, a second liquid outlet and a gas outlet are arranged on the front pipe box, the gas inlet is communicated with the gas inlet cavity, the second liquid outlet is communicated with the lower part of the second gas-liquid separation cavity, and the gas outlet is communicated with the upper part of the second gas-liquid separation cavity;
the shell is provided with a water inlet and a water outlet, the water inlet is communicated with the front end of the upper heat exchange cavity, and the water outlet is communicated with the front end of the lower heat exchange cavity.
2. The alcohol recovery heat exchanger according to claim 1, wherein a plurality of baffle plates are provided in the upper heat exchange chamber and the lower heat exchange chamber, respectively, and the heat exchange tubes pass through tube holes of the baffle plates.
3. The heat exchanger for alcohol recovery according to claim 2, wherein the baffle orifice plate is arcuate, and the adjacent baffle orifice plates in the upper heat exchange chamber and the adjacent baffle orifice plates in the lower heat exchange chamber are arranged in an up-down direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121213474.6U CN214842652U (en) | 2021-06-01 | 2021-06-01 | Heat exchanger for alcohol recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121213474.6U CN214842652U (en) | 2021-06-01 | 2021-06-01 | Heat exchanger for alcohol recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214842652U true CN214842652U (en) | 2021-11-23 |
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ID=78782007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121213474.6U Active CN214842652U (en) | 2021-06-01 | 2021-06-01 | Heat exchanger for alcohol recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214842652U (en) |
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2021
- 2021-06-01 CN CN202121213474.6U patent/CN214842652U/en active Active
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