Rotating tube process intensifier for evaporation systems

By enhancing the design of the evaporator through rotating tubes, the problems of uneven heat transfer and scaling in the evaporation system are solved, achieving efficient heat transfer and long-term operation, while reducing cleaning frequency and system load.

CN224345426UActive Publication Date: 2026-06-12SHANGHAI HONESS ENVIRONMENTAL TECH CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI HONESS ENVIRONMENTAL TECH CORP
Filing Date
2025-09-05
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

In existing evaporation systems, heat exchange equipment with fixed structures is prone to scaling, leading to uneven heat transfer, frequent cleaning, and affecting the service life and lifespan of the equipment. At the same time, cleaning increases the system load and reduces energy-saving effects.

Method used

A rotating tube-side enhanced evaporator is adopted, which drives the heat exchange tube bundle and stirring blades through a rotating main shaft. Combined with steam distribution and condensate storage chamber, it achieves effective heat transfer and reduces the risk of scaling. Metal hoses and sealing packings are used to ensure airtightness.

Benefits of technology

It improves heat transfer efficiency, reduces the risk of scaling, extends equipment service life, reduces cleaning frequency and system load, and enhances the long-term operation capability of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a rotating tube-side enhanced evaporator for an evaporation system. The main equipment includes a heat exchange tube side connected to it in a rotating pair. The heat exchange tube side comprises a steam distribution chamber, a condensate collection chamber, and several rotating tube bundles. The heat exchange tube side is fixed to a horizontally positioned rotating main shaft. The rotating main shaft has through holes on the tube walls corresponding to the steam distribution chamber and the condensate collection chamber. Both ends extend from detachable flat covers on both sides of the main equipment, pass through bearing supports, and are connected to metal hoses via rotary joints. One end serves as the heating steam inlet, and the other end as the steam condensate outlet. The rotating main shaft is located outside the main equipment, near the heating steam inlet, and is connected to a rotating power output device via a mechanical transmission chain, which drives its rotation. The rotating main shaft is equipped with stirring blades. This utility model more effectively enhances heat transfer, reduces the risk of scaling through stirring and rotation, and is more conducive to long-term operation of the equipment.
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Description

Technical Field

[0001] This utility model relates to the field of liquid concentration technology, and in particular to a rotary tube enhanced evaporator for evaporation systems. Background Technology

[0002] In current evaporation system designs and implementations, the heaters commonly used are mostly fixed-structure heat exchange equipment such as shell-and-tube heat exchangers and plate heat exchangers. During use, due to scaling after the liquid concentrates, they need to be cleaned regularly and frequently. In particular, when the local heating is uneven, local scaling and other problems are more prominent, which seriously affect the service life and lifespan of the heat exchanger.

[0003] Meanwhile, the purpose of the evaporation system is to concentrate and reduce or achieve zero discharge. The cleaning water will eventually return to the system for concentration or zero discharge. On the one hand, shutdown for cleaning affects the system's service life. On the other hand, frequent cleaning will increase the system's load and reduce its energy-saving effect.

[0004] Therefore, how to more effectively enhance heat transfer, reduce the risk of scaling through stirring and rotation, and better facilitate the long-term operation of equipment have become technical problems that urgently need to be solved by those skilled in the art. Utility Model Content

[0005] In view of the above-mentioned deficiencies of the prior art, the present invention provides a rotating tube-side enhanced evaporator for evaporation systems, which aims to more effectively enhance heat transfer, reduce the risk of scaling through stirring and rotation, and is more conducive to the long-term operation of the equipment.

[0006] To achieve the above objectives, this utility model discloses a rotating tube-pass enhanced evaporator for an evaporation system, including a main device with a cylindrical shape and a hollow interior;

[0007] The main equipment is equipped with a heat exchange tube connected to the main equipment in a rotary joint;

[0008] The heat exchange tube bundle includes a steam distribution chamber, a condensate collection chamber, and a plurality of rotating tube bundles disposed between the steam distribution chamber and the condensate collection chamber;

[0009] The heat exchange tubes are fixed on a horizontally positioned rotating spindle.

[0010] The rotating spindle has through holes on the pipe walls of the steam distribution chamber and the condensate storage chamber for the passage of steam or condensate. Both ends extend from the detachable flat covers on both sides of the main equipment and pass through the bearing supports. The ends are connected to metal hoses through rotary joints. One end serves as the heating steam inlet, through which heating steam is connected via the corresponding metal hose, and the other end serves as the steam condensate outlet, through which steam condensate is released via the corresponding metal hose.

[0011] The rotating spindle is located outside the main equipment, near the position that serves as the heating steam inlet, and is connected to the rotating power output device via a mechanical transmission chain, and is driven to rotate by the rotating power output device.

[0012] The rotating main shaft is equipped with stirring blades at the positions between the steam distribution chamber and the corresponding removable flat cover, and at the positions between the condensate accumulation chamber and the corresponding removable flat cover.

[0013] Preferably, the main equipment and all the bearing supports are mounted on the same frame base.

[0014] Preferably, sealing packing is provided between the rotating spindle and the steam distribution chamber, between the rotating spindle and the condensate storage chamber, between each of the removable flat covers, and between the steam distribution chamber and the condensate storage chamber and the tube sheet for connecting the rotating tube bundle, so as to achieve sealing.

[0015] Preferably, each of the bearing supports is provided with a bearing and a bearing housing at the position through which the rotating main shaft passes.

[0016] Preferably, all the rotating tube bundles are arranged parallel to the rotating main shaft, and both ends are connected to the steam distribution chamber and the condensate storage chamber respectively through tube sheets;

[0017] All of the aforementioned rotating tube bundles are provided with multiple heat exchange tube support rings along their length;

[0018] Welded tie rods are provided on the outermost side of all the heat exchange tube support rings and between the tube sheet and the tube sheet by welding.

[0019] Preferably, within the main equipment, above the heat exchange tube, there are a plurality of raw material liquid nozzles arranged along the length of the rotating main shaft to spray towards the heat exchange tube.

[0020] All the pipelines of the raw material nozzles extend from the top of the main equipment and are connected to the raw material distribution pipe.

[0021] More preferably, the raw material liquid distribution pipe is provided with a raw material liquid inlet for introducing raw material liquid, a cleaning liquid inlet for introducing cleaning liquid, an exhaust port for venting, and a raw material liquid distribution pipe pressure detection device and a raw material liquid distribution pipe temperature detection device.

[0022] The main equipment has an evaporation steam port at the top, located outside the raw material liquid distribution pipe, and a concentrate outlet at the bottom, located in the middle of the heat exchange tube, for discharging concentrate. The bottom also has a drain outlet near the two removable flat covers on both sides.

[0023] Preferably, any of the detachable flat covers is provided with a main equipment liquid level control located below and near the main rotating shaft; all of the detachable flat covers are provided with a main equipment temperature detection device located near the top of the main equipment.

[0024] Preferably, the metal hose used for connecting to heating steam is equipped with an inlet steam flow monitoring device, an inlet steam pressure monitoring device, and an inlet steam temperature monitoring device.

[0025] Preferably, the mechanical transmission chain is a meshing gear; the rotary power output device includes a reducer and a motor fixed to the frame base via a reducer motor support;

[0026] The output shaft of the reducer transmits rotation to the rotating main shaft through the meshing gears.

[0027] The beneficial effects of this utility model are:

[0028] This invention more effectively enhances heat transfer, reduces the risk of scaling through stirring and rotation, and is more conducive to the long-term operation of the equipment.

[0029] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0030] Figure 1 A schematic diagram of an embodiment of the present invention is shown.

[0031] Figure 2 This utility model is shown Figure 1 Schematic diagram of the structure in direction A. Detailed Implementation

[0032] Example: Figure 1 and Figure 2 As shown, the evaporation system uses a rotating tube-pass evaporator, including a main unit 5 that is cylindrical in shape and hollow inside;

[0033] The main equipment 5 is equipped with a heat exchange tube connected to the main equipment 5 in a rotary joint;

[0034] The heat exchange tube side includes a steam distribution chamber 1, a condensate collection chamber 2, and a plurality of rotating tube bundles 6 disposed between the steam distribution chamber 1 and the condensate collection chamber 2;

[0035] The heat exchange tubes are fixed on a horizontally positioned rotating spindle 3;

[0036] The rotating spindle 3 has through holes on the pipe walls of the steam distribution chamber 1 and the condensate storage chamber 2 for the passage of steam or condensate. Both ends extend from the detachable flat covers 21 on both sides of the main equipment 5 and pass through the bearing support 4. The ends are connected to the metal hoses 32 through the rotary joints 31 respectively. One end serves as the heating steam inlet, and the heating steam is connected through the corresponding metal hose 32. The other end serves as the steam condensate outlet, and the steam condensate is released through the corresponding metal hose 32.

[0037] The rotating spindle 3 is located outside the main equipment 5, near the position of the heating steam inlet, and is connected to the rotating power output device through a mechanical transmission chain, and is driven to rotate by the rotating power output device.

[0038] The rotating main shaft 3 is equipped with stirring blades 33 at the positions between the steam distribution chamber 1 and the corresponding removable flat cover 21, and at the positions between the condensate accumulation chamber 2 and the corresponding removable flat cover 21.

[0039] This invention obtains external steam through a metal hose 32, which can effectively prevent adverse effects such as thermal expansion. The metal hose 32 is connected to the rotating spindle 3 via a rotary joint 31.

[0040] The rotary joint 31 is itself a prior art, such as the technology disclosed in JB / T3968-2020 or JB / T8725-2013.

[0041] External hot steam enters the steam distribution chamber 1 through the through holes on the pipe wall of the rotating main shaft 3 corresponding to the steam distribution chamber 1 and the condensate accumulation chamber 2, supplying steam to the rotating tube bundle 6;

[0042] The steam condensate in the rotating tube bundle 6 enters the condensate accumulation chamber 2 and is discharged through the rotary joint 31 at the other end of the rotating spindle 3. Similarly, a metal hose 32 is installed after the rotary joint 31 at the condensate discharge end to eliminate the adverse effects of thermal expansion.

[0043] To prevent dead zones from appearing at both ends of the main equipment 5, stirring blades 33 are installed at both ends of the rotating main shaft 3 inside the main equipment 5.

[0044] The main equipment 5 has removable flat covers 21 at both ends, which facilitates the installation of rotating components and maintenance.

[0045] In some embodiments, the main device 5 and all bearing supports 4 are mounted on the same frame base 7.

[0046] In some embodiments, sealing packing 8 is provided between the rotating spindle 3 and the steam distribution chamber 1, between the rotating spindle 3 and the condensate storage chamber 2, between each removable flat cover 21, and between the steam distribution chamber 1 and the condensate storage chamber 2 and the tube sheet 61 for connecting the rotating tube bundle 6, thereby achieving sealing.

[0047] In practical applications, the steam distribution chamber 1 and the condensate storage chamber 2 are connected to the tube sheet 61 for connecting the rotating tube bundle 6 by detachable flanges. The rotating spindle 3 is provided with sealing packing 8 between the steam distribution chamber 1, between the rotating spindle 3 and the condensate storage chamber 2, between each detachable flat cover 21, and between the steam distribution chamber 1 and the condensate storage chamber 2 and the tube sheet 61 for connecting the rotating tube bundle 6. The sealing is achieved by the sealing packing 8.

[0048] In some embodiments, each bearing support 4 is provided with a bearing and bearing housing 41 at the position through which the rotating spindle 3 passes.

[0049] In some embodiments, all rotating tube bundles 6 are arranged parallel to the rotating main shaft 3, and both ends are connected to the steam distribution chamber 1 and the condensate storage chamber 2 respectively through tube sheets 61;

[0050] All rotating tube bundles 6 are provided with multiple heat exchange tube support rings 62 along their length;

[0051] Welded tie rods 63 are provided on the outermost side of all heat exchanger tube support rings 62 and between the tube sheet 61 by welding.

[0052] In practical applications, the rotating tube bundle 6 is fixed by tube sheets 61 at both ends and multiple heat exchange tube support rings 62. The tube sheets 61 and the heat exchange tube support rings 62 are fixed together by multiple welded tie rods 63 on the outer ring. The rotating tube bundle 6 passes through the tube sheets 61 and the heat exchange tube support rings 62. The two ends are fixed and sealed to the tube sheets 61 by welding, expansion joints, and expansion welding. It can rotate with the rotating spindle 3.

[0053] In some embodiments, within the main equipment 5, above the heat exchange tubes, a plurality of raw material liquid nozzles 9 are provided along the length of the rotating main shaft 3 to spray towards the heat exchange tubes.

[0054] All raw material liquid nozzles 9 have their pipes extending from the top of the main equipment 5 and connecting to the raw material liquid distribution pipe 91.

[0055] In some embodiments, the raw material liquid distribution pipe 91 is provided with a raw material liquid inlet for introducing raw material liquid, a cleaning liquid inlet for introducing cleaning liquid, an exhaust port for venting, and a raw material liquid distribution pipe pressure detection device 911 and a raw material liquid distribution pipe temperature detection device 912.

[0056] The main equipment 5 has an evaporation steam port at the top outside the raw material liquid distribution pipe 91, a concentrated liquid outlet at the bottom in the middle of the heat exchange tube, and a drain outlet at the bottom near the removable flat covers 21 on both sides.

[0057] In practical applications, the raw material liquid distribution pipe pressure detection device 911 is used to measure the pressure of the raw material liquid to ensure the spraying effect, and the raw material liquid distribution pipe temperature detection device 912 is used to measure the temperature change of the liquid injected into the main equipment to ensure the evaporation effect. Generally, the feed should be at the boiling point.

[0058] In some embodiments, any detachable flat cover 21 is provided with a main equipment liquid level control 34 located below and near the rotating spindle 3; all detachable flat covers 21 are provided with a main equipment temperature detection device 35 located near the top of the main equipment 5.

[0059] In some embodiments, an intake flow monitoring device 36, an intake pressure monitoring device 37, and an intake temperature monitoring device 38 are provided after the metal hose 32 for connecting to the heating steam.

[0060] In practical applications, the metal hose 32 used to connect to the heating steam is equipped with an inlet flow monitoring device 36, an inlet pressure monitoring device 37, and an inlet temperature monitoring device 38, which can strictly control the parameters and amount of external steam to match the design parameters.

[0061] In some embodiments, the mechanical transmission chain is a meshing gear 10; the rotary power output device includes a reducer 12 and a motor 13 fixed to the frame base 7 via a reducer motor support 11;

[0062] The output shaft of the reducer 12 transmits rotation to the rotating main shaft 3 through the meshing gear 10.

[0063] In practical applications, the rotary power output device and bearing support 4, which are jointly set on the frame base 7, form a skid-mounted structure, which facilitates transportation and installation.

[0064] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An evaporator for enhanced evaporation systems using a rotating tube pass; characterized in that, Including the main equipment with a cylindrical shape and a hollow interior (5); The main equipment (5) is equipped with a heat exchange tube connected to the main equipment (5) in a rotary joint; The heat exchange tube bundle includes a steam distribution chamber (1), a condensate storage chamber (2), and a plurality of rotating tube bundles (6) disposed between the steam distribution chamber (1) and the condensate storage chamber (2). The heat exchange tubes are fixed on a horizontally arranged rotating spindle (3). The rotating spindle (3) is provided with through holes for steam or condensate to pass through on the pipe walls of the steam distribution chamber (1) and the condensate storage chamber (2). Both ends extend from the detachable flat covers (21) on both sides of the main equipment (5) and pass through the bearing support (4). The ends are connected to the metal hoses (32) respectively through the rotary joints (31). One end serves as the heating steam inlet, and the heating steam is connected through the corresponding metal hose (32). The other end serves as the steam condensate outlet, and the steam condensate is released through the corresponding metal hose (32). The rotating spindle (3) is located outside the main equipment (5) and close to the position of the heating steam inlet. It is connected to the rotating power output device through a mechanical transmission chain and is driven to rotate by the rotating power output device. The rotating main shaft (3) is equipped with stirring blades (33) at the positions between the steam distribution chamber (1) and the corresponding removable flat cover (21), and at the positions between the condensate accumulation chamber (2) and the corresponding removable flat cover (21).

2. The rotating tube-side enhanced evaporator for the evaporation system according to claim 1, characterized in that, The main equipment (5) and all the bearing supports (4) are mounted on the same frame base (7).

3. The rotating tube-side enhanced evaporator for the evaporation system according to claim 1, characterized in that, Sealing packing (8) is provided between the rotating spindle (3) and the steam distribution chamber (1), between the spindle (3) and the condensate storage chamber (2), between each of the removable flat covers (21), and between the steam distribution chamber (1) and the condensate storage chamber (2) and the tube sheet (61) for connecting the rotating tube bundle (6), and sealing is achieved by the sealing packing (8).

4. The rotating tube-side enhanced evaporator for the evaporation system according to claim 1, characterized in that, Each of the bearing supports (4) is provided with a bearing and a bearing housing (41) at the position through which the rotating main shaft (3) passes.

5. The rotating tube-side enhanced evaporator for the evaporation system according to claim 1, characterized in that, All of the rotating tube bundles (6) are arranged parallel to the rotating main shaft (3), and both ends are connected to the steam distribution chamber (1) and the condensate storage chamber (2) respectively through tube sheets (61); All of the said rotating tube bundles (6) are provided with multiple heat exchange tube support rings (62) along the length direction; Welded tie rods (63) are provided between the outermost side of all the heat exchange tube support rings (62) and the tube sheet (61) by welding.

6. The rotating tube-side enhanced evaporator for the evaporation system according to claim 1, characterized in that, Inside the main equipment (5), above the heat exchange tube, there are a number of raw material liquid nozzles (9) that spray towards the heat exchange tube along the length of the rotating main shaft (3). All the pipelines of the raw material nozzles (9) extend from the top of the main equipment (5) and are connected to the raw material distribution pipe (91).

7. The rotating tube-side enhanced evaporator for an evaporation system according to claim 6, characterized in that, The raw material liquid distribution pipe (91) is provided with a raw material liquid inlet for introducing raw material liquid, a cleaning liquid inlet for introducing cleaning liquid, an exhaust port for venting, a raw material liquid distribution pipe pressure detection device (911) and a raw material liquid distribution pipe temperature detection device (912). The main equipment (5) has an evaporation steam port at the top located outside the raw material liquid distribution pipe (91), a concentrated liquid outlet at the bottom located in the middle of the heat exchange tube, and a drain outlet at the bottom near the two sides of the removable flat cover (21).

8. The rotating tube-side enhanced evaporator for the evaporation system according to claim 1, characterized in that, Each of the removable flat covers (21) is provided with a main equipment liquid level control (34) located below and near the rotating spindle (3); all the removable flat covers (21) are provided with a main equipment temperature detection device (35) located near the top of the main equipment (5).

9. The rotating tube-side enhanced evaporator for an evaporation system according to claim 1, characterized in that, The metal hose (32) for connecting to heating steam is equipped with an inlet flow monitoring device (36), an inlet pressure monitoring device (37) and an inlet temperature monitoring device (38).

10. The rotating tube-side enhanced evaporator for an evaporation system according to claim 1, characterized in that, The mechanical transmission chain is a meshing gear (10); the rotary power output device includes a reducer (12) and a motor (13) fixed to the frame base (7) by a reducer motor support (11). The output shaft of the reducer (12) transmits rotation to the rotating main shaft (3) through the meshing gear (10).