Steam recovery and reuse device for glycerol process to produce epichlorohydrin

Abstract

The utility model relates to a steam recycling device for glycerol method production of epichlorohydrin belongs to steam recycling technical field. The steam recycling device for glycerol method production of epichlorohydrin, include: recovery tank body, the upper end of recovery tank body is connected with the mouth of connection, the mouth of connection is communicated with the inside of recovery tank body, heat exchange mechanism, heat exchange mechanism sets up in the inside of recovery tank body, the surface of heat exchange mechanism extends to the outside of recovery tank body, wherein, heat exchange mechanism includes the heat preservation subassembly of setting in the inside of recovery tank body, through setting heat exchange pipe presents spiral shape setting in the inside liquid contact area of inner tank body increases, prolongs the path of steam heat exchange in heat exchange pipe inside, and the fin increases the area of heat exchange, and the setting of inner plate makes steam in heat exchange pipe inside, through the inner plate increases the contact area of heat exchange pipe heat exchange, improves the efficiency of heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of steam recovery and reuse technology, and in particular to a steam recovery and reuse device for the production of epichlorohydrin using the glycerol method. Background Technology

[0002] The glycerol process for producing epichlorohydrin is an important chemical production process that generates a large amount of high-temperature steam. Currently, the chemical industry has an increasing demand for energy recovery, especially in high-energy-consuming production processes, where steam recovery and reuse have become key to improving energy efficiency. With increasingly stringent environmental regulations and rising energy prices, companies are increasingly eager for efficient and low-cost steam recovery systems. A search of existing Chinese patent technology reveals a "steam recovery and reuse device" with publication number "CN215003004U". This device allows steam to enter the steam recovery component and heat the water in the heat exchange tank. Simultaneously, the steam can be circulated, improving its utilization rate and preventing direct discharge, thus enhancing the recovery and reuse effect. However, by setting up a bend in the pipe, the device comes into contact with the liquid surface, resulting in relatively low utilization efficiency of the high-temperature steam inside the pipe and poor heat exchange efficiency. Utility Model Content

[0003] Therefore, it is necessary to address the problem of relatively low utilization efficiency and poor heat exchange efficiency of high-temperature steam inside the pipe due to its contact with the liquid surface via a bend. The device provides a steam recovery and reuse apparatus for the glycerol-based epichlorohydrin production process, comprising: a recovery tank with a connection port fixedly connected to its upper end, the connection port communicating with the interior of the recovery tank; and a heat exchange mechanism disposed inside the recovery tank, the surface of which extends to the exterior of the recovery tank. The heat exchange mechanism includes an insulation component disposed inside the recovery tank, the heat exchange component being disposed inside the insulation component, and the surface of the heat exchange component extending to the exterior of the recovery tank.

[0004] In one embodiment, the heat exchange assembly includes a heat exchange tube disposed inside the insulation assembly. An inlet pipe is fixedly connected to the upper end of the heat exchange tube, and an outlet pipe is fixedly connected to the lower end of the heat exchange tube. The other end of the inlet pipe passes through the insulation assembly and extends to the outside of the recovery tank. A flange connector is fixedly connected to the other end of the inlet pipe.

[0005] In one embodiment, the heat insulation component includes a connecting base plate fixedly connected to the lower end of the recovery tank, an inner hollow tube fixedly connected to the upper end of the connecting base plate, the upper end of the inner hollow tube extending into the interior of the recovery tank, the surface of the inner hollow tube being fixedly connected to the surface of the heat exchange component, and an inner tank being sleeved on the outside of the inner hollow tube, the inner tank being fixedly connected to the upper end of the connecting base plate.

[0006] In one embodiment, an inner plate is fixedly connected to the inside of the inlet tube, the surface of the inner plate extending into the inside of the outlet tube, and the inner plate is spiral-shaped.

[0007] In one embodiment, a plurality of fins are fixedly connected to the surface of the heat exchange tube, and the plurality of fins are evenly distributed along the surface of the heat exchange tube.

[0008] In one embodiment, the surface of the fins near the heat exchange tube is circular, and the surface of the fins away from the heat exchange tube is wavy.

[0009] In one embodiment, the inner wall of the inner tank and the inner wall of the recycling tank are combined to form a heat-insulating cavity, and the inner wall of the heat-insulating cavity is fixedly connected with multiple positioning frames.

[0010] Beneficial effects The steam recovery and reuse device for producing epichlorohydrin using the glycerol method described above increases the liquid contact area by setting the heat exchange tubes in a spiral shape inside the inner tank, thus extending the path of steam heat exchange inside the heat exchange tubes. The fins increase the heat exchange area, and the inner plate further increases the contact area of ​​the steam inside the heat exchange tubes, thereby improving the heat exchange efficiency. The device uses insulation components to assist in positioning the heat exchange tubes during use. The inner tank and positioning frame form an insulation layer, reducing heat loss from the liquid inside the inner tank to the outside. This ensures that the liquid does not cool down too quickly after heat exchange, thus improving the efficiency of heat recovery from high-temperature steam. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the recycling tank of this utility model; Figure 3 This is a schematic diagram of the heat exchange component structure of this utility model; Figure 4 This is a schematic diagram showing the position of the inner plate of this utility model; Figure 5 This is a schematic diagram of the fin structure of this utility model; Figure 6 This is a schematic diagram showing the location of the insulation cavity in this utility model.

[0013] Figure label: 1. Recovery tank; 2. Connection port; 3. Heat exchange mechanism; 31. Heat exchange assembly; 311. Inlet pipe; 312. Heat exchange tube; 313. Outlet pipe; 314. Fins; 315. Inner plate; 316. Flange connector; 32. Insulation assembly; 321. Connecting base plate; 322. Inner hollow pipe; 323. Inner tank; 324. Insulation cavity; 325. Positioning frame. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0017] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0018] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0019] The following is combined Figures 1-6 This invention describes a steam recovery and reuse device for the production of epichlorohydrin using the glycerol process.

[0020] In one embodiment, a vapor recovery and reuse device for epichlorohydrin production using the glycerol method includes: a recovery tank 1, with a connection port 2 fixedly connected to the upper end of the recovery tank 1, the connection port 2 communicating with the interior of the recovery tank 1; a heat exchange mechanism 3, disposed inside the recovery tank 1, the surface of the heat exchange mechanism 3 extending to the exterior of the recovery tank 1; wherein the heat exchange mechanism 3 includes a heat insulation component 32 disposed inside the recovery tank 1, a heat exchange component 31 disposed inside the heat insulation component 32, the surface of the heat exchange component 31 extending to the exterior of the recovery tank 1; like Figure 1-5 As shown, the heat exchange assembly 31 includes a heat exchange pipe 312 disposed inside the insulation assembly 32. The upper end of the heat exchange pipe 312 is fixedly connected to an inlet pipe 311, and the lower end of the heat exchange pipe 312 is fixedly connected to an outlet pipe 313. The other end of the inlet pipe 311 passes through the insulation assembly 32 and extends to the outside of the recovery tank 1. The other end of the inlet pipe 311 is fixedly connected to a flange connector 316. An inner plate 315 is fixedly connected inside the inlet pipe 311. The surface of the inner plate 315 extends into the interior of the outlet pipe 313. The inner plate 315 is spiral-shaped. Multiple fins 314 are fixedly connected to the surface of the heat exchange pipe 312. The multiple fins 314 are evenly distributed along the surface of the heat exchange pipe 312. The surface of the fins 314 near the heat exchange pipe 312 is circular, and the surface of the fins 314 away from the heat exchange pipe 312 is wavy. In this embodiment, the device guides high-temperature steam into the heat exchange tube 312 through the inlet pipe 311. Since the heat exchange tube 312 is spirally arranged inside the inner tank 323, the liquid contact area is increased, and the path of steam heat exchange inside the heat exchange tube 312 is extended, improving the heat exchange effect. At the same time, the fins 314 increase the heat exchange area, thereby improving the heat exchange function. Meanwhile, the inner plate 315 allows the steam inside the heat exchange tube 312 to pass through the inner plate 315, increasing the heat exchange contact area. Also, since the inner plate 315 inside the heat exchange tube 312 is spirally arranged, it can retain some of the condensed high-temperature liquid. And because the liquid is in continuous contact with the high-temperature steam, the temperature of the high-temperature liquid is maintained, improving the heat exchange efficiency. like Figure 2 and Figure 6 As shown, the heat insulation component 32 includes a connecting base plate 321 fixedly connected to the lower end of the recovery tank 1. An inner hollow tube 322 is fixedly connected to the upper end of the connecting base plate 321. The upper end of the inner hollow tube 322 extends into the interior of the recovery tank 1. The surface of the inner hollow tube 322 is fixedly connected to the surface of the heat exchange component 31. An inner tank 323 is sleeved on the outside of the inner hollow tube 322. The inner tank 323 is fixedly connected to the upper end of the connecting base plate 321. The inner tank 323 and the inner wall of the recovery tank 1 combine to form a heat insulation cavity 324. A plurality of positioning brackets 325 are fixedly connected to the inner wall of the heat insulation cavity 324. In this embodiment, the device uses a heat exchange liquid inside the inner tank 323, and the inner tank 323 is connected to the lower end of the connection port 2. The device uses a heat insulation cavity 324 formed between the inner tank 323 and the recovery tank 1, and a positioning frame 325 to assist in positioning the inner tank 323, thereby reducing the dissipation of heat from the liquid inside the inner tank 323 and reducing heat loss.

[0021] Working principle: The inlet pipe 311 guides high-temperature steam into the heat exchange pipe 312. Due to the spiral arrangement of the heat exchange pipe 312, the contact area with the liquid inside the inner tank 323 is increased, which lengthens the heat exchange path of the steam inside the heat exchange pipe 312. The fins 314 increase the heat exchange area. The inner plate 315 increases the contact area of ​​the heat exchange pipe 312 through which the steam inside the heat exchange pipe 312 passes. The spiral arrangement of the inner plate 315 retains some of the condensed high-temperature liquid. The liquid continues to be in contact with the high-temperature steam, maintaining the temperature of the high-temperature liquid and improving the efficiency of heat exchange. The positioning frame 325 provides auxiliary positioning for the inner tank 323. The insulation cavity 324 reduces the dissipation of heat from the liquid inside the inner tank 323, reducing heat loss.

[0022] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0023] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A steam recovery and reuse device for the production of epichlorohydrin using the glycerol process, characterized in that, include: A recycling tank (1) is fixedly connected to a connection port (2) at its upper end, and the connection port (2) communicates with the interior of the recycling tank (1). A heat exchange mechanism (3) is disposed inside the recovery tank (1), and the surface of the heat exchange mechanism (3) extends to the outside of the recovery tank (1); The heat exchange mechanism (3) includes a heat insulation component (32) disposed inside the recovery tank (1), and a heat exchange component (31) is disposed inside the heat insulation component (32), the surface of the heat exchange component (31) extending to the outside of the recovery tank (1). The heat exchange assembly (31) includes a heat exchange tube (312) disposed inside the insulation assembly (32). The upper end of the heat exchange tube (312) is fixedly connected to an inlet pipe (311), and the lower end of the heat exchange tube (312) is fixedly connected to an outlet pipe (313). The other end of the inlet pipe (311) passes through the insulation assembly (32) and extends to the outside of the recovery tank (1). The other end of the inlet pipe (311) is fixedly connected to a flange connector (316). An inner plate (315) is fixedly connected inside the inlet tube (311), the surface of the inner plate (315) extends into the interior of the outlet tube (313), and the inner plate (315) is spiral-shaped; The heat exchange tube (312) has multiple fins (314) fixedly connected to its surface, and the multiple fins (314) are evenly distributed along the surface of the heat exchange tube (312). The surface of the fins (314) near the heat exchange tube (312) is circular, while the surface of the fins (314) away from the heat exchange tube (312) is wavy.

2. The steam recovery and reuse device for epichlorohydrin production using the glycerol method according to claim 1, characterized in that, The heat insulation component (32) includes a connecting base plate (321) fixedly connected to the lower end of the recovery tank (1). An inner hollow tube (322) is fixedly connected to the upper end of the connecting base plate (321). The upper end of the inner hollow tube (322) extends into the interior of the recovery tank (1). The surface of the inner hollow tube (322) is fixedly connected to the surface of the heat exchange component (31). An inner tank (323) is sleeved on the outside of the inner hollow tube (322). The inner tank (323) is fixedly connected to the upper end of the connecting base plate (321).

3. The steam recovery and reuse apparatus for the production of epichlorohydrin using the glycerol method according to claim 2, characterized in that, The inner tank (323) and the inner wall of the recovery tank (1) are combined to form a heat insulation cavity (324), and a plurality of positioning frames (325) are fixedly connected to the inner wall of the heat insulation cavity (324).

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