A dimethyl carbonate heat coupling and waste heat recovery device

Abstract

The utility model relates to chemical industry device technical field especially is a kind of dimethyl carbonate heat coupling and waste heat recovery device, including mounting bracket, the outer wall of mounting bracket is equipped with heat exchanger, the side wall of mounting bracket is equipped with control cabinet, wherein the outer wall of control cabinet is inlaid and is equipped with control panel, and mineral salt in liquid inner cavity is filtered and adsorbed by filter adsorption plate, and then the liquid filtered by filter adsorption plate enters heat exchanger and exchanges heat, when waste heat recovery device uses time is too long, since filter adsorption plate is filtered and is accumulated by impurity, it can affect the efficiency of waste heat recovery, only need to pull out sealing cover by lifting handle, pull out sealing frame by pulling groove, then filter adsorption plate is replaced, wherein sealing rubber mat seals the side wall of sealing frame, then sealing frame is reset, prevent scale formation in the inner cavity of heat exchanger by liquid, and then affect the efficiency of waste heat recovery.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically a dimethyl carbonate thermal coupling and waste heat recovery device. Background Technology

[0002] Dimethyl carbonate (DMC) is a low-toxicity, environmentally friendly, and widely used chemical raw material. It is an important organic synthesis intermediate containing carbonyl, methyl, and methoxy functional groups in its molecular structure, exhibiting diverse reactivity. Its production is characterized by safety, convenience, low pollution, and easy transportation. Due to its relatively low toxicity, DMC is a promising "green" chemical product. DMC possesses properties such as high oxygen content, excellent octane rating enhancement, no phase separation, low toxicity, and rapid biodegradability. This allows gasoline to use 4.5 times less DMC than methyl tert-butyl ether (MTBE) to achieve the same oxygen content, thereby reducing the total emissions of hydrocarbons, carbon monoxide, and formaldehyde in vehicle exhaust. Furthermore, it overcomes the shortcomings of commonly used gasoline additives, such as easy water solubility and groundwater pollution. Therefore, DMC is poised to become one of the most promising gasoline additives to replace MTBE in the production of dimethyl carbonate. During the reaction of dimethyl carbonate, the reaction tower generates heat. At this time, a waste heat recovery device is needed to collect the excess heat and reuse it, making the production more green and environmentally friendly. For example, the prior art represented by the prior art document "A waste heat recovery device for dimethyl carbonate" (publication number CN209226880U) is that the device base is fixedly connected to the top surface of the reaction tower support frame, the top of the reaction tower support frame is fixedly connected to the reaction tower, the surface of the reaction tower is fixedly connected to the waste heat recovery cover, the waste heat recovery cover includes a cover shell, the inner wall of the cover shell is movably connected to a scale mesh cover, the surface of the cover shell is fixedly connected to a closing door by a hinge, the surface of the closing door is respectively provided with a fixing screw hole and a discharge hole, the inner wall of the fixing screw hole is threaded with a closing door fixing screw, and the inner wall of the discharge hole is fixedly connected to a discharge pipe. This dimethyl carbonate waste heat recovery device, through the installation of a scale screen, screen support rods, screen frame, outer shell, and closing door, achieves the effect of facilitating scale cleaning and improving the heat utilization efficiency of the waste heat recovery device, thus effectively solving the problems of existing technologies. However, its structure still needs improvement, as detailed below:

[0003] In this solution, a scale screen is used to block scale. However, scale is mainly formed by the precipitation and adhesion of calcium, magnesium and other salts contained in boiler feedwater to metal surfaces after heating. Scale forms inside the scale screen, and the screen can only block large scale particles, making it difficult to block mineral salts in the water. When liquid flows through the heat exchange structure, scale easily adheres to the inner wall of the structure, affecting the efficiency of waste heat recovery and making thorough cleaning difficult. Therefore, a dimethyl carbonate thermal coupling and waste heat recovery device is needed to improve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a dimethyl carbonate thermal coupling and waste heat recovery device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dimethyl carbonate thermal coupling and waste heat recovery device includes a mounting bracket, a heat exchanger mounted on the outer wall of the mounting bracket, a control cabinet mounted on the side wall of the mounting bracket, a control panel embedded in the outer wall of the control cabinet, one end of the heat exchanger being connected to a thermal coupling reaction tank via an internal circulation component, an external circulation component mounted on the outer wall of the heat exchanger, and a filter component mounted on the outer wall of the mounting bracket.

[0007] The internal circulation component includes a conduit, one end of which is connected to a heat exchanger, and a first circulation pump is installed at one end of the conduit. A heat exchange tube is installed at one end of the first circulation pump via a connecting pipe.

[0008] As a preferred embodiment of this utility model, the heat exchange tube is located in the inner cavity of the thermal coupling reaction vessel, and one end of the heat exchange tube penetrates through the thermal coupling reaction vessel and extends to the outer wall of the thermal coupling reaction vessel to be connected to a heat exchanger.

[0009] As a preferred embodiment of this utility model, the external circulation component includes a second circulation pump, which is mounted on the outer wall of the mounting bracket. One end of the second circulation pump is equipped with a second conduit, one end of which is connected to a heat exchanger, and the other end of the second circulation pump is equipped with an inlet pipe.

[0010] As a preferred embodiment of this utility model, the filter assembly includes a filter cylinder, which is mounted on the outer wall of the mounting bracket, and a connecting pipe is installed on one side of the outer wall of the filter cylinder.

[0011] As a preferred embodiment of this utility model, an inlet pipe is connected to the outer wall of the other side of the filter cylinder, and the connection between the inlet pipe and the filter cylinder is a continuous structure. A limiting groove is installed on the opposite outer wall of the filter cylinder, and a sealing frame is slidably connected to the inner wall of the limiting groove.

[0012] As a preferred embodiment of this utility model, a sealing gasket is symmetrically arranged on one side of the limiting slide groove and on the outer wall of the sealing frame, wherein the outer wall of the sealing gasket is attached to the inner wall of the filter cylinder, a groove is formed on the outer wall of the sealing frame, and a filter adsorption plate is inserted and removed from the inner wall of the sealing frame.

[0013] As a preferred embodiment of this utility model, a sealing cover is plugged into and installed at the port of the filter cylinder, and a handle is installed on the outer wall of the sealing cover. Two sets of handles are provided and are respectively located on the outer wall of the sealing cover. Limiting springs are arranged in an array on the inner wall of the sealing cover.

[0014] As a preferred embodiment of this utility model, a downward sealing plate is installed at one end of the limiting spring, wherein the downward sealing plate is slidably connected to the inner wall of the sealing cover, and a limiting baffle is installed at the port of the sealing cover, wherein the limiting baffle limits the downward sealing plate.

[0015] As a preferred embodiment of this utility model, one end of the pressure sealing plate is attached to the outer wall of the sealing frame, the filter assembly is located on one side of the external circulation assembly, and the control cabinet is connected to the control panel, the first circulation pump and the second circulation pump by wires, and the connection method is electrical connection.

[0016] With the above technical solution, when the sealing frame is inserted into the limiting slide groove, the sealing cover is properly positioned, and the sealing cover seals the top outer wall of the sealing frame by pressing down the sealing plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, mineral salts in the liquid cavity are filtered and adsorbed by the filter adsorption plate, and then the liquid filtered by the filter adsorption plate enters the heat exchanger for heat exchange. When the waste heat recovery device has been used for a long time, the filter adsorption plate will accumulate impurities, which will affect the efficiency of waste heat recovery. Simply pull out the sealing cover by the handle, pull out the sealing frame through the groove, and then replace the filter adsorption plate. The sealing gasket seals the side wall of the sealing frame. Then the sealing frame is reset to prevent the liquid from forming scale in the heat exchanger cavity, which will affect the efficiency of waste heat recovery. This helps to solve the problem that it is difficult to block mineral salts in the water. When the liquid flows through the heat exchange structure, scale is easily formed and adsorbed on the inner wall of the heat exchange structure, which affects the efficiency of waste heat recovery and is difficult to clean thoroughly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter cylinder of this utility model;

[0022] Figure 4 This utility model Figure 3 An enlarged schematic diagram of the structure at point A.

[0023] In the diagram: 1. Mounting bracket; 2. Heat exchanger; 3. Control cabinet; 4. Control panel; 5. Internal circulation assembly; 501. Pipe 1; 502. First circulation pump; 503. Connecting pipe; 504. Heat exchange pipe; 6. Thermal coupling reaction vessel; 7. External circulation assembly; 701. Second circulation pump; 702. Pipe 2; 703. Inlet pipe; 8. Filter assembly; 801. Filter cylinder; 802. Connecting pipe; 803. Limiting groove; 804. Sealing frame; 805. Sealing gasket; 806. Pull groove; 807. Filter adsorption plate; 808. Sealing top cover; 809. Handle; 810. Limiting spring; 811. Lowering sealing plate; 812. Limiting baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0026] For examples, please refer to Figure 1-4 This utility model provides a technical solution:

[0027] A dimethyl carbonate thermal coupling and waste heat recovery device includes a mounting bracket 1, a heat exchanger 2 mounted on the outer wall of the mounting bracket 1, a control cabinet 3 mounted on the side wall of the mounting bracket 1, wherein a control panel 4 is embedded in the outer wall of the control cabinet 3, one end of the heat exchanger 2 is connected to a thermal coupling reaction tank 6 via an internal circulation component 5, an external circulation component 7 is mounted on the outer wall of the heat exchanger 2, and a filter component 8 is mounted on the outer wall of the mounting bracket 1.

[0028] In this embodiment, the internal circulation component 5 includes a conduit 501, one end of which is connected to a heat exchanger 2. A first circulation pump 502 is installed at one end of the conduit 501. A heat exchange tube 504 is installed at one end of the first circulation pump 502 via a connecting pipe 503. The heat exchange tube 504 is located in the inner cavity of the thermally coupled reaction tank 6, and one end of the heat exchange tube 504 penetrates the thermally coupled reaction tank 6 and extends to the outer wall of the thermally coupled reaction tank 6 to be connected to the heat exchanger 2.

[0029] In this embodiment, the external circulation component 7 includes a second circulation pump 701, which is mounted on the outer wall of the mounting bracket 1. One end of the second circulation pump 701 is equipped with a conduit 702, one end of which is connected to a heat exchanger 2, and the other end of the second circulation pump 701 is equipped with an inlet pipe 703.

[0030] In this embodiment, the filter assembly 8 includes a filter cylinder 801, which is mounted on the outer wall of the mounting bracket 1. A connecting pipe 802 is installed on one side of the outer wall of the filter cylinder 801, and an inlet pipe 703 is connected to the other side of the outer wall of the filter cylinder 801. The connection between the inlet pipe 703 and the filter cylinder 801 is a continuous structure. A limiting groove 803 is installed on the opposite outer wall of the filter cylinder 801, and a sealing frame 804 is slidably connected to the inner wall of the limiting groove 803.

[0031] In this embodiment, sealing gaskets 805 are symmetrically arranged on one side of the limiting groove 803 and on the outer wall of the sealing frame 804. The outer wall of the sealing gasket 805 is attached to the inner wall of the filter cylinder 801. A groove 806 is formed on the outer wall of the sealing frame 804. A filter adsorption plate 807 is inserted and removed from the inner wall of the sealing frame 804. A sealing cover 808 is inserted and removed from the port of the filter cylinder 801. A sealing cover 808 is installed on the outer wall of the sealing cover 808. The handle 809 is provided in two sets and is located on the outer wall of the sealing cover 808. Limiting springs 810 are arranged in an array on the inner wall of the sealing cover 808. A pressing sealing plate 811 is installed at one end of the limiting spring 810. The pressing sealing plate 811 is slidably connected to the inner wall of the sealing cover 808. A limiting baffle 812 is installed at the port of the sealing cover 808, and the limiting baffle 812 limits the pressing sealing plate 811.

[0032] Based on the above structural features and connection relationship, when the sealing frame 804 is inserted into the limiting slide groove 803, the sealing cover 808 is properly positioned, wherein the sealing cover 808 seals the top outer wall of the sealing frame 804 by pressing down the sealing plate 811.

[0033] One end of the pressure sealing plate 811 is attached to the outer wall of the sealing frame 804. The filter assembly 8 is located on one side of the external circulation assembly 7. The control cabinet 3 is electrically connected to the control panel 4, the first circulation pump 502 and the second circulation pump 701 via wires, which enables the device to be powered on, thereby enabling the control cabinet 3 to control the control panel 4, the first circulation pump 502 and the second circulation pump 701 to operate.

[0034] The working process of this utility model is as follows: When the dimethyl carbonate thermal coupling and waste heat recovery device designed in this scheme is working or running, the control cabinet 3 is electrically connected to the control panel 4, the first circulation pump 502 and the second circulation pump 701 through wires, so that the device is powered on, and the control cabinet 3 controls the control panel 4, the first circulation pump 502 and the second circulation pump 701 to operate.

[0035] A first circulation pump 502 is installed at one end of a conduit 501. A heat exchange tube 504 is installed at one end of the first circulation pump 502 via a connecting pipe 503. The heat exchange tube 504 is located in the inner cavity of the thermally coupled reaction tank 6, and one end of the heat exchange tube 504 penetrates the thermally coupled reaction tank 6 and extends to the outer wall of the thermally coupled reaction tank 6, where it is connected to a heat exchanger 2. At the same time, the control cabinet 3 controls the first circulation pump 502 to operate, so that the first circulation pump 502 draws water from the inner cavity of the heat exchanger 2 through the conduit 501. Then, the first circulation pump 502 absorbs heat from the inner cavity of the thermally coupled reaction tank 6 by passing the water through the heat exchange tube 504. The liquid after absorbing heat through the heat exchange tube 504 is then injected into the heat exchanger 2 to form an internal circulation.

[0036] By connecting the connecting pipe 802 to the hot water exchange pipe, the water in the inner cavity of the hot water exchange pipe is filtered by the filter assembly 8. Then, the second circulation pump 701 is installed on the outer wall of the mounting bracket 1. One end of the second circulation pump 701 is equipped with a second conduit 702, one end of which is connected to the heat exchanger 2. The other end of the second circulation pump 701 is equipped with an inlet pipe 703. When the switch of the control panel 4 is turned on, the control cabinet 3 controls the second circulation pump 701 to operate, so that the second circulation pump 701 draws water from the inner cavity of the filter cylinder 801 through the inlet pipe 703. Then, the second circulation pump 701 injects the water into the heat exchanger 2 through the second conduit 702 for external circulation heat exchange.

[0037] Heat exchange occurs when the liquid passes through the heat exchanger 2 via the external circulation component 7, thereby recovering the waste heat generated by the thermally coupled reaction tank 6. When the externally circulated liquid passes through the filter component 8, sealing gaskets 805 are symmetrically arranged on one side of the limiting slide groove 803 and on the outer wall of the sealing frame 804. The outer wall of the sealing gasket 805 is attached to the inner wall of the filter cylinder 801. A groove 806 is formed on the outer wall of the sealing frame 804. Under the action of the filter adsorption plate 807 inserted and removed on the inner wall of the sealing frame 804, the mineral salts in the liquid cavity are filtered and adsorbed by the filter adsorption plate 807. Then, the liquid filtered by the filter adsorption plate 807 enters the heat exchanger 2 for heat exchange. When the waste heat is recovered... When the device has been used for a long time, the filter adsorption plate 807 will accumulate impurities, which will affect the efficiency of waste heat recovery. Simply pull out the sealing cover 808 through the handle 809, pull out the sealing frame 804 through the pull groove 806, replace the filter adsorption plate 807, and then reset the sealing frame 804. The sealing gasket 805 seals the side wall of the sealing frame 804 to prevent the formation of scale in the inner cavity of the heat exchanger 2, which would affect the efficiency of waste heat recovery. This helps to solve the problem that mineral salts in the water are difficult to block. When the liquid flows through the heat exchange structure, scale is easily formed and adsorbed on the inner wall of the heat exchange structure, which affects the efficiency of waste heat recovery and is difficult to clean thoroughly.

[0038] The control panel 4, the first circulating pump 502, the second circulating pump 701, and the control cabinet 3 used in this utility model are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the control panel 4, the first circulating pump 502, the second circulating pump 701, and the control cabinet 3 will not be described in detail here.

[0039] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dimethyl carbonate thermal coupling and waste heat recovery device, comprising a mounting bracket (1), characterized in that: A heat exchanger (2) is installed on the outer wall of the mounting bracket (1), and a control cabinet (3) is installed on the side wall of the mounting bracket (1). A control panel (4) is embedded in the outer wall of the control cabinet (3). One end of the heat exchanger (2) is connected to a thermally coupled reaction tank (6) through an internal circulation component (5). An external circulation component (7) is installed on the outer wall of the heat exchanger (2), and a filter component (8) is installed on the outer wall of the mounting bracket (1). The internal circulation component (5) includes a conduit (501), one end of which is connected to a heat exchanger (2), and a first circulation pump (502) is installed at one end of the conduit (501). A heat exchange tube (504) is installed at one end of the first circulation pump (502) via a connecting pipe (503).

2. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 1, characterized in that: The heat exchange tube (504) is located in the inner cavity of the thermally coupled reaction vessel (6), and one end of the heat exchange tube (504) penetrates through the thermally coupled reaction vessel (6) and extends to the outer wall of the thermally coupled reaction vessel (6) where a heat exchanger (2) is connected.

3. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 2, characterized in that: The external circulation assembly (7) includes a second circulation pump (701), which is mounted on the outer wall of the mounting bracket (1). One end of the second circulation pump (701) is equipped with a second conduit (702), one end of which is connected to a heat exchanger (2), and the other end of the second circulation pump (701) is equipped with an inlet pipe (703).

4. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 3, characterized in that: The filter assembly (8) includes a filter cylinder (801), which is mounted on the outer wall of the mounting bracket (1), and a connecting pipe (802) is installed on one side of the outer wall of the filter cylinder (801).

5. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 4, characterized in that: An inlet pipe (703) is connected to the outer wall of the other side of the filter cylinder (801), and the connection between the inlet pipe (703) and the filter cylinder (801) is a continuous structure. A limiting groove (803) is installed on the opposite outer wall of the filter cylinder (801), and a sealing frame (804) is slidably connected to the inner wall of the limiting groove (803).

6. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 5, characterized in that: A sealing gasket (805) is symmetrically arranged on one side of the limiting groove (803) and on the outer wall of the sealing frame (804). The outer wall of the sealing gasket (805) is attached to the inner wall of the filter cylinder (801). A groove (806) is opened on the outer wall of the sealing frame (804). A filter adsorption plate (807) is inserted and installed on the inner wall of the sealing frame (804).

7. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 6, characterized in that: A sealing cover (808) is plugged into and installed at the port of the filter cylinder (801). A handle (809) is installed on the outer wall of the sealing cover (808). Two sets of handles (809) are provided and are located on the outer wall of the sealing cover (808). Limiting springs (810) are arranged in an array on the inner wall of the sealing cover (808).

8. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 7, characterized in that: One end of the limiting spring (810) is equipped with a pressing sealing plate (811), wherein the pressing sealing plate (811) is slidably connected to the inner wall of the sealing cover (808), and a limiting baffle (812) is installed at the port of the sealing cover (808), wherein the limiting baffle (812) limits the pressing sealing plate (811).

9. The dimethyl carbonate thermal coupling and waste heat recovery device according to claim 8, characterized in that: One end of the pressure sealing plate (811) is attached to the outer wall of the sealing frame (804), the filter assembly (8) is located on one side of the external circulation assembly (7), and the control cabinet (3) is connected to the control panel (4), the first circulation pump (502) and the second circulation pump (701) by wires and the connection method is electrical connection.

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