Low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device

Abstract

The utility model relates to ethylene carbonate technical field especially for a kind of low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device, including energy-saving tank, the inside of energy-saving tank is provided with recovery mechanism, it is used to carry out heat exchange to the residual steam generated by ethylene carbonate solid-liquid separation, the top of energy-saving tank is fixedly connected with steam inlet pipe, the bottom of energy-saving tank is fixedly connected with steam exhaust pipe, the outer wall of steam inlet pipe is fixedly connected with buffer tank, the outer wall of steam inlet pipe, steam exhaust pipe and buffer tank is all installed with solenoid valve, the front of energy-saving tank is installed with controller, by setting a kind of low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device, steam waste heat is recycled using the recovery mechanism in the device, after the steam is recycled, the existing solid-liquid separation energy-saving device needs multiple energy-saving devices to carry out multiple recycling, the problem of device structure is more complex.

Description

Technical Field

[0001] This utility model relates to the field of ethylene carbonate technology, specifically to a low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device. Background Technology

[0002] Ethylene carbonate is a high-performance organic solvent that can dissolve a variety of polymers. It can also be used as an organic intermediate to replace ethylene oxide in dioxylation reactions and is the main raw material for the transesterification process of dimethyl carbonate. During the production of ethylene carbonate, solid-liquid separation is required, which generates a large amount of waste vapor.

[0003] However, existing solid-liquid separation energy-saving devices still have shortcomings. Specifically, after recovering steam, existing solid-liquid separation energy-saving devices require multiple sets of energy-saving devices to recover steam multiple times, making the device structure relatively complex. Utility Model Content

[0004] The purpose of this invention is to provide a low-energy-consumption ethylene carbonate solid-liquid separation energy-saving 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 low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device includes an energy-saving tank. The energy-saving tank is equipped with a recovery mechanism inside, which is used to exchange heat with the residual steam generated during the solid-liquid separation of ethylene carbonate. A steam inlet pipe is fixedly connected to the top of the energy-saving tank, and a steam outlet pipe is fixedly connected to the bottom of the energy-saving tank. A buffer tank is fixedly connected to the outer wall of the steam inlet pipe. Solenoid valves are installed on the outer walls of the steam inlet pipe, the steam outlet pipe, and the buffer tank. A controller is installed on the front of the energy-saving tank, and a terminal block is fixedly connected to the outer wall of the energy-saving tank below the controller.

[0007] As a preferred embodiment of this utility model, the recovery mechanism includes a heat exchange plate fixedly connected to the inner wall of the energy-saving tank, a condenser plate fixedly connected to the top of the heat exchange plate, a heat-conducting plate fixedly connected to the outer wall of the condenser plate and inside the heat exchange plate, a heat exchange tube fixedly connected to the outer wall of the heat-conducting plate and inside the energy-saving tank, a return pipe fixedly connected to the center of the inner wall of the heat exchange plate, a baffle plate fixedly connected to the outer wall of the return pipe and inside the energy-saving tank, a temperature sensor fixedly connected to the outer wall of the energy-saving tank and below the condenser plate, a miniature air pump fixedly connected to the inner wall of the return pipe and at the corresponding position of the temperature sensor, a return nozzle fixedly connected to the inner wall of the return pipe and above the baffle plate, and a semiconductor cooling chip fixedly connected to the inner wall of the condenser plate.

[0008] As a preferred embodiment of this utility model, the energy-saving tank is made of aluminum alloy, the outer wall of the energy-saving tank is coated with heat-insulating coating, and the buffer tank has an L-shaped structure design.

[0009] As a preferred embodiment of this utility model, multiple sets of solenoid valves are provided, and the connection between the solenoid valves, terminals and controller is all electrical connection.

[0010] As a preferred embodiment of this utility model, the heat exchange plate, the reflux tube, and the baffle plate are all made of heat insulation material. Multiple sets of heat exchange plates, baffle plates, condenser plates, heat conduction plates, and reflux nozzles are provided, and the multiple sets of heat exchange plates and multiple sets of baffle plates are arranged alternately. The heat exchange tube has a spiral structure design.

[0011] Through the above technical solutions, the staggered arrangement of baffles and heat exchange plates can extend the flow path of steam, increase the heat exchange time, and improve the heat exchange effect.

[0012] As a preferred embodiment of this utility model, the condenser plate, the heat-conducting plate, and the heat exchange tube are all made of copper. The condenser plate is installed obliquely on the top of the heat exchange plate, the heat-conducting plate passes through the heat exchange plate and extends into the energy-saving tank, and the top of the baffle plate is provided with an inclined slope.

[0013] The above technical solution can prevent liquid droplets generated by steam condensation from remaining on the baffle plate and condenser plate.

[0014] As a preferred embodiment of this utility model, the reflux nozzle is installed obliquely inside the reflux pipe, the reflux nozzle penetrates and extends outside the reflux pipe, the semiconductor cooling chip penetrates the condenser plate and extends inside the heat-conducting plate, and the semiconductor cooling chip, the micro air pump, the temperature sensor and the controller are all connected electrically.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, a low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device is set up. The device utilizes a recovery mechanism to recover waste heat from steam. Waste steam is input into the steam inlet pipe and flows into the energy-saving tank. The steam entering the energy-saving tank flows downwards along baffles and heat exchange plates. The controller activates a semiconductor cooling chip, which absorbs heat from the steam through a condenser plate and transfers the absorbed heat to the heat exchange tube through a heat conduction plate. Pure water is injected into the heat exchange tube, moving downwards and absorbing the heat transferred to it. A temperature sensor detects the temperature of the steam flowing into the steam outlet pipe. When the steam temperature exceeds a threshold, the controller closes the solenoid valves in both the steam inlet and outlet pipes and opens the solenoid valve in the buffer tank. Steam entering the pipe flows into a buffer tank for temporary storage. Simultaneously, the controller activates a micro air pump, which draws steam from the energy-saving tank into the return pipe. The air entering the return pipe flows upward and re-enters the upper part of the energy-saving tank through the return nozzle. The steam re-enters the energy-saving tank and flows downward along the baffles and heat exchange plates, exchanging heat with the condenser plate again until the steam temperature detected by the temperature sensor is below the threshold. At this point, the controller opens the solenoid valves in the steam discharge pipe and the buffer tank, allowing the steam in the energy-saving tank to be discharged along the steam discharge pipe. The steam stored in the buffer tank flows into the energy-saving tank along the steam inlet pipe. This allows for multiple heat exchange and recovery of the steam, solving the problem that existing solid-liquid separation energy-saving devices require multiple sets of energy-saving devices for steam recovery after initial recovery, resulting in a complex device structure. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a three-dimensional structural diagram of the heat exchange tube of this utility model.

[0021] In the diagram: 1. Energy-saving tank; 2. Recovery mechanism; 3. Steam inlet pipe; 4. Steam outlet pipe; 5. Buffer tank; 6. Solenoid valve; 7. Controller; 8. Terminal; 201. Baffle plate; 202. Condensing plate; 203. Heat-conducting plate; 204. Heat exchange tube; 205. Return pipe; 206. Baffle plate; 207. Temperature sensor; 208. Miniature air pump; 209. Return nozzle; 210. Semiconductor refrigeration chip. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] For examples, please refer to Figure 1-4 This utility model provides a technical solution:

[0025] A low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device includes an energy-saving tank 1. The energy-saving tank 1 is equipped with a recovery mechanism 2, which is used to exchange heat with the residual steam generated during the solid-liquid separation of ethylene carbonate. A steam inlet pipe 3 is fixedly connected to the top of the energy-saving tank 1, and a steam outlet pipe 4 is fixedly connected to the bottom of the energy-saving tank 1. A buffer tank 5 is fixedly connected to the outer wall of the steam inlet pipe 3. Solenoid valves 6 are installed on the outer walls of the steam inlet pipe 3, the steam outlet pipe 4, and the buffer tank 5. A controller 7 is installed on the front of the energy-saving tank 1, and a terminal block 8 is fixedly connected to the outer wall of the energy-saving tank 1 and below the controller 7.

[0026] Energy-saving tank 1 is made of aluminum alloy and its outer wall is coated with heat-insulating coating. Buffer tank 5 has an L-shaped structure design.

[0027] The solenoid valve 6 is provided in multiple sets, and the solenoid valve 6, the terminal block 8 and the controller 7 are all connected by electrical connection.

[0028] In this embodiment, reference Figure 2 , Figure 3 as well as Figure 4The recovery mechanism 2 includes a heat exchange plate 201 fixedly connected to the inner wall of the energy-saving tank 1. A condenser plate 202 is fixedly connected to the top of the heat exchange plate 201. A heat conduction plate 203 is fixedly connected to the outer wall of the condenser plate 202 and inside the heat exchange plate 201. A heat exchange tube 204 is fixedly connected to the outer wall of the heat conduction plate 203 and inside the energy-saving tank 1. A return pipe 205 is fixedly connected to the center of the inner wall of the heat exchange plate 201. A baffle plate 206 is fixedly connected to the outer wall of the return pipe 205 and inside the energy-saving tank 1. A temperature sensor 207 is fixedly connected to the outer wall of the return pipe 205 and below the condenser plate 202. A miniature air pump 208 is fixedly connected to the inner wall of the energy-saving tank 1 and at the corresponding position of the temperature sensor 207. A return nozzle 209 is fixedly connected to the inner wall of the return pipe 205 and above the baffle plate 206. A semiconductor cooling chip 210 is fixedly connected to the inner wall of the condenser plate 202.

[0029] The heat exchange plate 201, reflux pipe 205, and baffle plate 206 are all made of heat insulation material. Multiple sets of heat exchange plate 201, baffle plate 206, condenser plate 202, heat conduction plate 203, and reflux nozzle 209 are provided. The multiple sets of heat exchange plate 201 and multiple sets of baffle plate 206 are arranged alternately. The alternate arrangement of baffle plate 206 and heat exchange plate 201 can extend the flow path of steam, increase the heat exchange time, and improve the heat exchange effect. The heat exchange pipe 204 has a spiral structure design.

[0030] The condenser plate 202, the heat conduction plate 203, and the heat exchange tube 204 are all made of copper. The condenser plate 202 is installed at an angle on the top of the heat exchange plate 201. The heat conduction plate 203 passes through the heat exchange plate 201 and extends into the energy-saving tank 1. The top of the baffle plate 206 is provided with an inclined slope. The inclined condenser plate 202 and the inclined slope on the baffle plate 206 can prevent the liquid droplets generated by steam condensation from remaining.

[0031] The reflux nozzle 209 is installed obliquely inside the reflux pipe 205. The reflux nozzle 209 penetrates and extends outside the reflux pipe 205. The thermoelectric cooler 210 penetrates the condenser plate 202 and extends inside the heat-conducting plate 203. The thermoelectric cooler 210, the micro air pump 208, and the temperature sensor 207 are all electrically connected to the controller 7.

[0032] The working process of this utility model is as follows: When using the low-energy ethylene carbonate solid-liquid separation energy-saving device designed in this scheme, waste steam is input into the steam inlet pipe 3. The waste steam flows into the energy-saving tank 1 along the steam inlet pipe 3. The steam entering the energy-saving tank 1 flows downward along the baffle plate 206 and the heat exchange plate 201. The controller 7 activates the semiconductor cooling chip 210. The semiconductor cooling chip 210 absorbs heat from the steam through the condenser plate 202 and transfers the absorbed heat to the heat exchange tube 204 through the heat conduction plate 203. Pure water is injected into the heat exchange tube 204. The pure water moves downward along the heat exchange tube 204 and absorbs the heat transferred to the heat exchange tube 204. The temperature sensor 207 detects the temperature of the steam flowing into the steam outlet pipe 4. When the temperature of the steam entering the steam outlet pipe 4 exceeds the threshold, the controller 7 closes the steam inlet pipe 3 and the steam outlet pipe 4. The solenoid valve 6 in pipe 4 is opened, and the solenoid valve 6 in buffer tank 5 is also opened. The steam entering pipe 3 will flow into buffer tank 5 for temporary storage. At the same time, the controller 7 starts the micro air pump 208, which draws the steam in energy-saving tank 1 into return pipe 205. The air entering return pipe 205 will flow upward and re-enter the upper part of energy-saving tank 1 through return nozzle 209. The steam re-entering energy-saving tank 1 will flow downward along baffle 206 and heat exchange plate 201 and exchange heat with condenser plate 202 again. The above process is repeated until the steam temperature detected by temperature sensor 207 is lower than the threshold. The controller 7 opens the solenoid valve 6 in steam inlet pipe 3, steam outlet pipe 4 and buffer tank 5. The steam in energy-saving tank 1 is discharged along steam outlet pipe 4, and the steam stored in buffer tank 5 flows into energy-saving tank 1 along steam inlet pipe 3.

[0033] The solenoid valve 6, terminal 8, controller 7, temperature sensor 207, miniature air pump 208, and semiconductor refrigeration chip 210 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 solenoid valve 6, terminal 8, controller 7, temperature sensor 207, miniature air pump 208, and semiconductor refrigeration chip 210 will not be described in detail here.

[0034] 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.

[0035] 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 low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device, comprising an energy-saving tank (1), characterized in that: The energy-saving tank (1) is equipped with a recovery mechanism (2) inside, which is used to exchange heat with the residual steam generated by the solid-liquid separation of ethylene carbonate. A steam inlet pipe (3) is fixedly connected to the top of the energy-saving tank (1), and a steam outlet pipe (4) is fixedly connected to the bottom of the energy-saving tank (1). A buffer tank (5) is fixedly connected to the outer wall of the steam inlet pipe (3). Solenoid valves (6) are installed on the outer walls of the steam inlet pipe (3), the steam outlet pipe (4), and the buffer tank (5). A controller (7) is installed on the front of the energy-saving tank (1), and a terminal block (8) is fixedly connected to the outer wall of the energy-saving tank (1) and below the controller (7).

2. The low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device according to claim 1, characterized in that: The recycling mechanism (2) includes a heat exchange plate (201) fixedly connected to the inner wall of the energy-saving tank (1). A condenser plate (202) is fixedly connected to the top of the heat exchange plate (201). A heat conduction plate (203) is fixedly connected to the outer wall of the condenser plate (202) and inside the heat exchange plate (201). A heat exchange tube (204) is fixedly connected to the outer wall of the heat conduction plate (203) and inside the energy-saving tank (1). A return pipe (205) is fixedly connected to the center of the heat exchange plate (201). The outer wall of the return pipe (205) is... Furthermore, a baffle plate (206) is fixedly connected inside the energy-saving tank (1), a temperature sensor (207) is fixedly connected to the outer wall of the return pipe (205) and below the condenser plate (202), a micro air pump (208) is fixedly connected inside the energy-saving tank (1) and at the corresponding position of the temperature sensor (207), a return nozzle (209) is fixedly connected inside the return pipe (205) and above the baffle plate (206), and a semiconductor cooling chip (210) is fixedly connected inside the condenser plate (202).

3. The low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device according to claim 1, characterized in that: The energy-saving tank (1) is made of aluminum alloy, and the outer wall of the energy-saving tank (1) is coated with heat-insulating coating.

4. The low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device according to claim 1, characterized in that: The solenoid valve (6) is provided in multiple sets, and the solenoid valve (6), the terminal block (8) and the controller (7) are all connected electrically.

5. The low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device according to claim 2, characterized in that: The heat exchange plate (201), reflux pipe (205), and baffle plate (206) are all made of heat insulation material. The heat exchange plate (201), baffle plate (206), condenser plate (202), heat conduction plate (203) and reflux nozzle (209) are all provided in multiple sets, and the multiple sets of heat exchange plates (201) and multiple sets of baffle plates (206) are arranged alternately. The heat exchange pipe (204) has a spiral structure design.

6. The low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device according to claim 2, characterized in that: The condenser plate (202), the heat-conducting plate (203), and the heat exchange tube (204) are all made of copper. The condenser plate (202) is installed at an angle on the top of the heat exchange plate (201). The heat-conducting plate (203) passes through the heat exchange plate (201) and extends into the energy-saving tank (1). The top of the baffle plate (206) is provided with an inclined slope.

7. The low-energy-consumption ethylene carbonate solid-liquid separation energy-saving device according to claim 2, characterized in that: The reflux nozzle (209) is installed obliquely inside the reflux pipe (205). The reflux nozzle (209) penetrates and extends outside the reflux pipe (205). The thermoelectric cooler (210) penetrates the condenser plate (202) and extends into the heat-conducting plate (203). The thermoelectric cooler (210), the micro air pump (208), and the temperature sensor (207) are all electrically connected to the controller (7).

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