A low-remover applied to the field of silicone oil volatilization production
By employing five sets of non-equidistant heat exchange coils and a coaxial cold trap external condensation jacket in the de-heater, the problems of uneven material heating and low condensation recovery efficiency are solved, achieving uniform material heating and efficient condensation recovery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI WEIZE PETROCHEMICAL EQUIPMENT CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-21
AI Technical Summary
The material in the existing de-cooling device is heated unevenly, resulting in low condensation recovery efficiency and a large refrigeration load.
The system employs five sets of non-equidistant heat exchange coils, a coaxially arranged cold trap, and an external condensing jacket structure. Through the non-equidistant design of the five sets of heat exchange coils and the synergistic effect of the condensing jacket, uniform heating and efficient condensation recovery of materials are achieved.
This achieves uniform heating of materials on the heat exchange coil, improves condensation recovery efficiency, and reduces refrigeration load.
Smart Images
Figure CN224523967U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of petrochemical production equipment technology, specifically, it relates to a descaling device applied in the field of silicone oil volatilization production. Background Technology
[0002] The low molecular weight remover, also known as the low molecular weight remover, is mainly used in the petrochemical production field for the production of high molecular weight materials (such as dimethyl silicone oil). It removes low molecular weight byproducts through processes such as heating, vacuum, and nitrogen purging. In the existing technology, the common physical structure of the low molecular weight remover mainly includes a vertical cylinder, a low molecular weight removal chamber, a heat exchanger, a feed inlet at the top, and a discharge outlet at the bottom. The heat exchanger has the following main defects: (1) The heat exchange tube generally adopts a single integrated design structure, and the material is heated unevenly. When heated by the heat exchange tube, local overheating is likely to occur; (2) A single condenser jacket is set on the outside of the cylinder, which not only results in a low overall condensation recovery efficiency of the equipment, but also a large refrigeration load. Utility Model Content
[0003] The purpose of this invention is to provide a de-lowering device for use in the production of silicone oil volatilization, so as to solve the technical problems existing in the prior art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A descaling device for use in the production of silicone oil volatilization includes a descaling device cylinder, vacuum ports located on the side and top of the cylinder, a feed inlet located at the top of the cylinder, and a discharge port located at the bottom of the cylinder. An inner coil assembly is installed within the cylinder, comprising a first set of heat exchange coils, a second set of heat exchange coils, a third set of heat exchange coils, a fourth set of heat exchange coils, and a fifth set of heat exchange coils arranged sequentially from the inside out. A cold trap is installed within the cylinder, with a circulating water inlet and a circulating water outlet at its upper end. A water vapor recovery pipe is installed at the bottom of the cylinder, with a collector connected to its upper end, and the lower end of the cold trap is placed inside the collector. A condensation jacket is installed on the outer wall of the cylinder, and a condensation recovery pipe extending to the outside is installed at the lower end of the inner wall of the cylinder.
[0006] Preferably, the center distance ratio of the first group of heat exchange coils, the second group of heat exchange coils, the third group of heat exchange coils, the fourth group of heat exchange coils and the fifth group of heat exchange coils is as follows: 5:7:9:11:13.
[0007] Preferably, a distributor is provided inside the de-lowering cylinder at the upper end of the inner coil assembly, and a through hole is provided in the middle of the distributor, through which the upper end of the cold trap passes.
[0008] Preferably, an inclined baffle is provided at the lower end of the inner wall of the dewatering device cylinder for collecting water on the inner wall to the condensate recovery pipe.
[0009] Preferably, the cold trap is disposed in the middle of the depressor cylinder and is coaxial with the depressor cylinder.
[0010] Preferably, the collector is funnel-shaped, wider at the top and narrower at the bottom.
[0011] Preferably, a plurality of connecting wing plates are provided at intervals along the axial direction on the side of the de-lower cylinder.
[0012] Preferably, the bottom of the depressor cylinder has a downwardly convex arc-shaped structure, the discharge port is located in the middle of the bottom of the depressor cylinder, and the inlet of the water vapor recovery pipe is located on the side of the discharge port.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] (1) This utility model adopts five sets of non-equidistant heat exchange coils. Preferably, the center distance ratio is 5:7:9:11:13. Heat transfer oil (around 200°C) or 10 kg of steam (around 180°C) is introduced into the five sets of heat exchange coils. Since the lengths of the five sets of heat exchange coils are different, valves are installed at the inlet to control the flow rate, so that the temperature inside the five sets of coils is basically the same, thereby ensuring that the material is heated evenly on the heat exchange coils.
[0015] (2) In this utility model, a cold trap is arranged coaxially with the middle of the de-cooling device cylinder, and its lower end extends into a funnel-shaped collector to directly capture low-temperature gas phase components. In conjunction with the external condensing jacket, the two work together to not only reduce the refrigeration load of a single condensing device, but also effectively improve the condensing recovery efficiency of the device. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the diagram.
[0018] The corresponding names of the attached figures are as follows: 1-Depressant cylinder, 2-Vacuum port, 3-Inlet port, 4-Outlet port, 5-First heat exchange coil, 6-Second heat exchange coil, 7-Third heat exchange coil, 8-Fourth heat exchange coil, 9-Fifth heat exchange coil, 10-Cold trap, 11-Circulating water inlet, 12-Circulating water outlet, 13-Water vapor recovery pipe, 14-Collector, 15-Condensation jacket, 16-Condensation recovery pipe, 17-Distributor, 18-Connecting wing plate, 19-Inclined baffle. Detailed Implementation
[0019] To enable those skilled in the art to have a clearer understanding of this utility model, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model and facilitate understanding. The technical solutions provided by this utility model are not limited to those provided in the following embodiments, nor should they limit the scope of protection of this utility model.
[0020] Example
[0021] like Figures 1-2 This embodiment provides a de-sinking device for use in the production of silicone oil volatilization. The de-sinking device uses a de-sinking device cylinder 1 as the main body. The de-sinking device cylinder 1 is 4700mm high and 1600mm in diameter. Several connecting wing plates 18 are arranged at intervals along the axial direction on the side of the de-sinking device cylinder 1 (example: 2 connecting wing plates are arranged at intervals). The connecting wing plates are welded on-site between the de-sinking device cylinder and the base frame to enhance the installation stability of the equipment.
[0022] Vacuum ports 2 are provided on the side and top of the descaling cylinder 1. Vacuum ports 2 are used to connect to vacuum equipment. Before the finished material comes out, the water vapor and some light components inside the descaling cylinder 1 are extracted by vacuum.
[0023] The feed inlet 3 is located at the center of the top flange of the depressor cylinder 1. It adopts a flange interface for connecting the material conveying structure. The bottom of the depressor cylinder 1 has a downward convex arc structure. The discharge outlet 4 is located at the lowest point of the arc bottom. A discharge valve is installed at the discharge outlet 4 to control the discharge.
[0024] The lower end of the feed inlet 3 inside the cylinder 1 of the depressor is the feed end. After the material enters the equipment from the feed inlet 3, it enters the cavity through the feed end. In this embodiment, a distributor 17 is provided at the feed end to make the material evenly distributed on the inner coil assembly. Preferably, the distributor 17 adopts a perforated plate structure with a thickness of 30mm and a hole diameter of Φ8mm.
[0025] A through hole is provided in the middle of the distributor 17, through which a cold trap 10 is inserted into the middle of the depressor cylinder 1. The cold trap is coaxial with the depressor cylinder 1. The upper end of the cold trap 10 is provided with a circulating water inlet 11 and a circulating water outlet 12. This end passes through the through hole and is located at the upper end of the distributor 17 for connecting to an external circulating water system. The lower end of the cold trap 10 extends into the collector 14. Example material of the cold trap 10: copper-nickel alloy.
[0026] The collector 14 is flared at the top and narrow at the bottom, hollow inside with openings at both ends. A water vapor recovery pipe 13 is connected to the lower end of the collector 14. The water vapor recovery pipe 13 has a curved pipe structure, with its lower end extending to the outside of the separator cylinder 1. Preferably, the inlet of the water vapor recovery pipe 13 is located on the side of the discharge port 4. Circulating water is added to the cold trap, allowing the water vapor evaporated from the heated material inside the tank to be converted into water on the inner wall of the tank. This water is then discharged outside the equipment via the water vapor recovery pipe 13.
[0027] An internal coil assembly is installed inside the depressor cylinder 1. A heat transfer medium (e.g., heat transfer oil, steam, hot water, etc.) is used to heat the material distributed on the coils, evaporating the moisture within the material. In this embodiment, the internal coil assembly adopts a five-group non-equidistant heat exchange coil structure design, specifically as follows: From the inside out, the first group of heat exchange coils 5, the second group of heat exchange coils 6, the third group of heat exchange coils 7, the fourth group of heat exchange coils 8, and the fifth group of heat exchange coils 9 are arranged sequentially. The inlet and outlet pipes of each heat exchange coil are located outside the depressor cylinder for the entry of the heat transfer medium. All the heat exchange coils mentioned above use a diameter of 25mm. The center-to-center distance ratio of each heat exchange coil is as follows: 5:7:9:11:13. Each heat exchange coil is filled with heat transfer oil (around 200℃) or 10 kg of steam (around 180℃). By adopting a non-equidistant design for the five heat exchange coils, valves can be installed at the inlet of the heat exchange coils to control the flow rate of the heat transfer medium during equipment application. This ensures that the temperature inside the five coils is basically the same, thereby guaranteeing that the material is heated evenly on the heat exchange coils.
[0028] In this embodiment, a condensing jacket 15 is provided on the outer wall of the de-sinking device cylinder 1. The jacket cavity is 20mm thick and 10°C cooling water is introduced through it. A condensation recovery pipe 16 extending to the outside of the de-sinking device cylinder 1 is provided at the lower end of the inner wall of the de-sinking device cylinder 1. Preferably, an inclined baffle 19 for collecting water on the inner wall to the condensation recovery pipe 16 is also provided at the lower end of the inner wall of the de-sinking device cylinder. The inclined baffle 19 is arranged around the lower end of the inner wall of the de-sinking device cylinder (distributed in a ring around the inner wall of the de-sinking device cylinder), and the inclination angle of the inclined baffle 19 is 30~45°, with the inclination direction facing the inlet end of the condensation recovery pipe 16. The inclined baffle 19 can prevent water and volatiles on the inner wall from flowing into the finished product at the bottom of the de-sinking device cylinder 1. Circulating cooling water is added to convert water vapor into water on the inner wall of the tank, and then collected by the inclined baffle 19 and discharged through the condensation recovery pipe 16.
[0029] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A descaling device for use in the production of silicone oil volatilization, comprising a descaling device cylinder (1), vacuum ports (2) disposed on the side and top of the descaling device cylinder (1), a feed inlet (3) disposed on the top of the descaling device cylinder (1), and a discharge port (4) disposed on the bottom of the descaling device cylinder (1), characterized in that, An inner coil assembly is provided inside the de-sinking device cylinder (1). The inner coil assembly includes a first group of heat exchange coils (5), a second group of heat exchange coils (6), a third group of heat exchange coils (7), a fourth group of heat exchange coils (8), and a fifth group of heat exchange coils (9) arranged sequentially from the inside to the outside. A cold trap (10) is provided inside the de-sinking device cylinder (1). A circulating water inlet (11) and a circulating water outlet (12) are provided at the upper end of the cold trap (10). A water vapor recovery pipe (13) is provided at the bottom of the de-sinking device cylinder (1). A collector (14) is provided at the upper end of the water vapor recovery pipe (13) and communicates with it. The lower end of the cold trap (10) is placed inside the collector (14). A condensing jacket (15) is provided on the outer side wall of the de-sinking device cylinder (1). A condensing recovery pipe (16) extending to the outside is provided at the lower end of the inner side wall of the de-sinking device cylinder (1).
2. The de-lowering device applied in the production of silicone oil volatilization according to claim 1, characterized in that: The center distance ratio of the first group of heat exchange coils (5), the second group of heat exchange coils (6), the third group of heat exchange coils (7), the fourth group of heat exchange coils (8) and the fifth group of heat exchange coils (9) is as follows: 5:7:9:11:
13.
3. The de-lowering device applied in the production of silicone oil volatilization according to claim 2, characterized in that: Inside the de-lower cylinder (1), at the upper end of the inner coil assembly, a distributor (17) is provided. A through hole is provided in the middle of the distributor (17), and the upper end of the cold trap (10) passes through the through hole.
4. The de-lowering device applied in the production of silicone oil volatilization according to claim 3, characterized in that: An inclined baffle (19) for collecting water on the inner wall to the condensate recovery pipe (16) is also provided at the lower end of the inner wall of the dewatering cylinder (1).
5. The de-lowering device applied in the production of silicone oil volatilization according to claim 4, characterized in that: The cold trap (10) is located in the middle of the depressor cylinder (1) and is coaxial with the depressor cylinder (1).
6. The de-lowering device applied in the production of silicone oil volatilization according to claim 5, characterized in that: The collector (14) is shaped like a trumpet, wider at the top and narrower at the bottom.
7. The de-lowering device applied in the production of silicone oil volatilization according to claim 6, characterized in that: A number of connecting wing plates (18) are provided at intervals along the axial direction on the side of the de-lowering cylinder (1).
8. The de-lowering device applied in the production of silicone oil volatilization according to any one of claims 1 to 7, characterized in that: The bottom of the depressor cylinder (1) has a downward convex arc structure. The discharge port (4) is located in the middle of the bottom of the depressor cylinder (1). The port of the water vapor recovery pipe (13) is located on the side of the discharge port (4).