阅读说明：本技术 一种再沸器 (Reboiler ) 是由 韩军 姜红梅 刘浩 陈小哲 于中原 于 2020-06-30 设计创作，主要内容包括：本发明涉及再沸器技术领域,公开一种再沸器,包括：相互连通的换热筒和缓冲筒,缓冲筒固定于换热筒的外壁,换热筒的外壁上开设有至少一个连通换热筒内空间和缓冲筒内空间的导流孔；缓冲筒上设置有至少一个壳程进口,换热筒上设置有至少一个壳程出口,换热筒内安装有换热管束,壳程进口用于导入第一换热流体,换热管束内流通有第二换热流体,第一换热流体和第二换热流体通过换热管束换热,换热后第一换热流体经壳程出口流出换热筒外。本发明提供的再沸器在换热筒外侧设置缓冲筒,将换热和进液分割成两个空间,避免了对换热管束的直接冲击,减缓了换热管束的疲劳失效,提高了再沸器的安全性和使用寿命。(The invention relates to the technical field of reboilers, and discloses a reboiler, which comprises: the buffer cylinder is fixed on the outer wall of the heat exchange cylinder, and at least one flow guide hole for communicating the space in the heat exchange cylinder with the space in the buffer cylinder is formed in the outer wall of the heat exchange cylinder; the buffer cylinder is provided with at least one shell pass inlet, the heat exchange cylinder is provided with at least one shell pass outlet, a heat exchange tube bundle is installed in the heat exchange cylinder, the shell pass inlet is used for guiding in first heat exchange fluid, second heat exchange fluid flows in the heat exchange tube bundle, the first heat exchange fluid and the second heat exchange fluid exchange heat through the heat exchange tube bundle, and the first heat exchange fluid flows out of the heat exchange cylinder through the shell pass outlet after heat exchange. The reboiler provided by the invention has the advantages that the buffer cylinder is arranged outside the heat exchange cylinder, so that heat exchange and liquid inlet are divided into two spaces, the direct impact on the heat exchange tube bundle is avoided, the fatigue failure of the heat exchange tube bundle is relieved, and the safety and the service life of the reboiler are improved.)

1. A reboiler, comprising: the heat exchanger comprises a heat exchange cylinder (1) and a buffer cylinder (2) which are communicated with each other, wherein the buffer cylinder (2) is fixed on the outer wall of the heat exchange cylinder (1), and the outer wall of the heat exchange cylinder (1) is provided with at least one flow guide hole (12) for communicating the space in the heat exchange cylinder (1) with the space in the buffer cylinder (2);

the heat exchanger is characterized in that at least one shell pass inlet (21) is formed in the buffer cylinder (2), at least one shell pass outlet (11) is formed in the heat exchange cylinder (1), a heat exchange tube bundle is installed in the heat exchange cylinder (1), the shell pass inlet (21) is used for guiding first heat exchange fluid, second heat exchange fluid flows in the heat exchange tube bundle, the first heat exchange fluid and the second heat exchange fluid can pass through the heat exchange tube bundle for heat exchange, and the first heat exchange fluid flows out of the heat exchange cylinder (1) through the shell pass outlet (11) after heat exchange.

2. The reboiler according to claim 1, wherein the buffer cylinder (2) is fixed to the outer wall of the heat exchange cylinder (1) by welding, or the buffer cylinder (2) is integrally formed with the heat exchange cylinder (1).

3. The reboiler according to claim 1, characterized in that the buffer cylinder (2) comprises a half pipe part (23), both ends of the half pipe part (23) are connected to the outer wall of the heat exchange cylinder (1); alternatively, the first and second electrodes may be,

buffer cylinder (2) including straight limit portion (22) and half tub of portion (23) of connection, the both ends of straight limit portion (22) connect in the outer wall of heat exchange cylinder (1), half tub of portion (23) are located straight limit portion (22) are kept away from one side of heat exchange cylinder (1), shell side import (21) set up in on half tub of portion (23).

4. The reboiler according to claim 3, characterized in that at least one exhaust hole (13) is opened on the inner side of the connection part of the outer wall of the heat exchange cylinder (1) and the buffer cylinder (2).

5. The reboiler according to claim 1, wherein a buffer baffle (4) is arranged in the buffer vessel (2) directly opposite the shell side inlet (21).

6. The reboiler according to claim 1, wherein the heat exchange tube bundle comprises a plurality of heat exchange tubes (3), the heat exchange tubes (3) being high flux tubes comprising a base tube and a high flux heat exchange layer coated on an outer surface of the base tube.

7. The reboiler according to claim 1, characterized in that tube plates (8) are sealingly mounted at both ends of the heat exchange tube (1), and the heat exchange tube bundle is fixed on the tube plates (8).

8. The reboiler according to claim 7, further comprising a tube bundle fixing assembly (5), wherein the tube bundle fixing assembly (5) comprises a pull rod (51) and a plurality of support plates (52) installed on the pull rod (51), one end of the pull rod (51) is fixed to the tube plate (8) on one side of the heat exchange drum (1), the other end of the pull rod (51) extends along the axial direction of the heat exchange drum (1), the support plates (52) are provided with a plurality of mounting holes, and the pull rod (51) and the heat exchange tube bundle are both inserted into the mounting holes.

9. The reboiler according to claim 7, characterized in that the reboiler further comprises a front header (6) and a back header (7) sealingly mounted outside the two tube sheets (8), the heat exchange tube bundle extending through the tube sheets (8) on both sides thereof and communicating with the front header (6) and the back header (7), respectively.

10. The reboiler according to claim 9, wherein the front end tube box (6) is provided with a tube side inlet (61) and a tube side outlet (62), and a partition plate (9) is disposed in the front end tube box (6), the partition plate (9) divides the space in the front end tube box (6) into a liquid inlet space (63) and a liquid outlet space (64), the liquid inlet space (63) is communicated with the tube side inlet (61), and the liquid outlet space (64) is communicated with the tube side outlet (62).

Technical Field

The invention relates to the technical field of reboilers, in particular to a reboiler.

Background

The petrochemical industry is the traditional high energy consumption industry, and the heat exchanger is the more common heat transfer device in the petrochemical industry, and under the background that energy crisis and environmental protection pressure are aggravated day by day, the manufacturing, operation, the cost of maintenance of reducing the heat exchanger, guarantee that the heat exchanger safe operation is an important subject.

The reboiler is also called reboiler, is a heat exchanger widely used in petrochemical industry, and nearly 95% of oil refining industry uses horizontal thermosyphon reboiler. With the upsizing, centralizing and continuity of production devices in chemical industry, oil refining and the like, as a main heat exchange component in the production devices, the reboiler tends to be upsized, and the internal fluid flow velocity is larger due to the upsizing of a heat exchanger, so that the impact on the heat exchange tube in the reboiler is larger.

The heat exchange tubes are key components of the reboiler, are flexible components, are most sensitive to vibration, and are most susceptible to damage in the regions where fluid-induced vibration occurs (i.e., high velocity regions of fluid flow). The large-scale of the reboiler causes the fluid to flow at an overlarge speed when entering the reboiler, and directly impacts the heat exchange tube to cause strong vibration of the heat exchange tube, so that micro-cracks positioned in the main stress direction of the heat exchange tube can be rapidly expanded under the action of alternating stress force caused by vibration, and finally the heat exchange tube fails due to fatigue cracking.

Disclosure of Invention

Based on the above, the present invention provides a reboiler to solve the technical problem that a heat exchange tube of a reboiler in the prior art is easily impacted by high-speed fluid to fail.

In order to achieve the purpose, the invention adopts the following technical scheme:

providing a reboiler, comprising: the buffer cylinder is fixed on the outer wall of the heat exchange cylinder, and at least one flow guide hole for communicating the space in the heat exchange cylinder with the space in the buffer cylinder is formed in the outer wall of the heat exchange cylinder;

the buffer cylinder is provided with at least one shell pass inlet, the heat exchange cylinder is provided with at least one shell pass outlet, a heat exchange tube bundle is installed in the heat exchange cylinder, the shell pass inlet is used for leading in first heat exchange fluid, second heat exchange fluid flows in the heat exchange tube bundle, the first heat exchange fluid and the second heat exchange fluid can exchange heat through the heat exchange tube bundle, and after heat exchange, the first heat exchange fluid flows out of the heat exchange cylinder through the shell pass outlet.

As a preferable scheme of the reboiler, the buffer cylinder is fixed to an outer wall of the heat exchange cylinder by welding, or the buffer cylinder and the heat exchange cylinder are integrally formed.

As a preferable scheme of the reboiler, the buffer cylinder comprises a half pipe part, and two ends of the half pipe part are connected to the outer wall of the heat exchange cylinder; alternatively, the first and second electrodes may be,

the buffer cylinder comprises a half pipe part and a straight edge part which are connected, the two ends of the straight edge part are connected with the outer wall of the heat exchange cylinder, the half pipe part is located on one side, far away from the heat exchange cylinder, of the straight edge part, and the shell pass inlet is formed in the half pipe part.

As a preferred scheme of the reboiler, at least one exhaust hole is formed in the inner side of the joint of the outer wall of the heat exchange cylinder and the buffer cylinder.

As a preferable proposal of the reboiler, a buffer baffle is arranged in the buffer cylinder and is opposite to the shell side inlet.

As a preferable scheme of the reboiler, the heat exchange tube bundle comprises a plurality of heat exchange tubes, the heat exchange tubes are high-flux tubes, and the high-flux tubes comprise base tubes and high-flux heat exchange layers coated on the outer surfaces of the base tubes.

As a preferable scheme of the reboiler, tube plates are hermetically mounted at two ends of the heat exchange tube, and the heat exchange tube bundle is fixed on the tube plates.

As a preferred scheme of the reboiler, the reboiler still includes the fixed subassembly of tube bank, the fixed subassembly of tube bank includes the pull rod and install in a plurality of backup pads on the pull rod, the one end of pull rod is fixed in wherein one side of a heat exchanger section of thick bamboo the tube sheet, the other end of pull rod is followed the axial extension of a heat exchanger section of thick bamboo, a plurality of mounting holes have been seted up in the backup pad, the pull rod with heat exchanger tube bank all wears to locate in the mounting hole.

As a preferable scheme of the reboiler, the reboiler further comprises a front end tube box and a rear end tube box which are hermetically mounted on the outer sides of the two tube plates, and the heat exchange tube bundle penetrates through the tube plates on the two sides of the heat exchange tube bundle and is respectively communicated with the front end tube box and the rear end tube box.

As a preferable scheme of the reboiler, a tube side inlet and a tube side outlet are formed in the front end tube box, a partition plate is arranged in the front end tube box, the partition plate divides the space in the front end tube box into a liquid inlet space and a liquid outlet space, the liquid inlet space is communicated with the tube side inlet, and the liquid outlet space is communicated with the tube side outlet.

The invention has the beneficial effects that:

the reboiler provided by the invention has the advantages that the buffer cylinder is arranged on the outer side of the heat exchange cylinder, so that heat exchange and liquid inlet are divided into two spaces, the heat exchange tube bundle is basically not directly impacted by high-speed liquid inlet fluid, the vibration amplitude of the heat exchange tube bundle is greatly reduced, and the fatigue failure of the heat exchange tube bundle is relieved; the buffer cylinder is arranged on the outer side of the heat exchange cylinder, and does not occupy the space in the heat exchange cylinder, so that more heat exchange tubes can be arranged in the heat exchange cylinder, and the heat exchange efficiency is improved; the buffer cylinder and the heat exchange cylinder are integrated, the problem that the anti-vibration structure falls off does not exist, and the structure is safe and reliable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a sectional elevation view of a reboiler as provided in one embodiment of the present invention;

FIG. 2 is a side sectional view of a reboiler in partial configuration according to an embodiment of the present invention;

fig. 3 is a side sectional view of a part of the structure of a reboiler provided in the second embodiment of the present invention.

The figures are labeled as follows:

1-a heat exchange cylinder; 11-shell side outlet; 12-diversion holes; 13-air holes; 14-a support; 2-a buffer cylinder; 21-shell side inlet; 22-straight edge portion; 23-a half tube section; 3, heat exchange tubes; 4-a buffer baffle; 5-a tube bundle fixing assembly; 51-a pull rod; 52-a support plate; 6-front end tube box; 61-tube pass inlet; 62-tube pass outlet; 63-liquid inlet space; 64-liquid outlet space; 7-rear end pipe box; 8-a tube plate; 9-partition plate.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.