Waste gas heat energy recovery equipment for silicone oil production

Abstract

The utility model provides waste gas heat energy recovery equipment for silicone oil production, which comprises a heat energy recovery main body, a snakelike water pipe is arranged in the heat energy recovery main body, one end of the snakelike water pipe penetrates through the top of the heat energy recovery main body, the other end of the snakelike water pipe penetrates through the bottom of the heat energy recovery main body, and water outlet valves are arranged at two ends of the snakelike water pipe; a three-way valve is arranged on the side, away from the draught fan, of the exhaust pipe, a heat preservation pipe communicated with the interior of the heat preservation box is arranged at a port in the top of the three-way valve, and a first valve is arranged on the side wall of the heat preservation pipe. A gas outlet pipe is arranged at a port of the side wall of the three-way valve, a second valve is arranged on the side wall of the gas outlet pipe, a temperature sensor is arranged on the side wall of the exhaust pipe, and the temperature sensor is used for detecting that the temperature of flowing waste gas exceeds a set value so that the first valve can be opened and the second valve can be closed.

Description

Technical Field

[0001] The utility model relates to waste gas heat energy recovery equipment, in particular to waste gas heat energy recovery equipment for silicone oil production. Background Art

[0002] Silicone oil usually refers to linear polysiloxane products that remain in liquid state at room temperature. It is generally divided into two categories: methyl silicone oil and modified silicone oil. The most commonly used silicone oil - methyl silicone oil, also known as ordinary silicone oil, has all methyl groups. Methyl silicone oil has good chemical stability, insulation, and good hydrophobicity. When producing silicone oil, waste gas heat recovery equipment for silicone oil production is required.

[0003] In the prior art, the existing waste gas heat recovery equipment for silicone oil production is prone to incomplete absorption when recovering the heat energy of the waste gas, resulting in a waste of heat energy and poor heat recovery effect. Moreover, when recovering the heat energy of the waste gas, the waste gas is unevenly distributed, thereby reducing the efficiency of heat recovery. Now, there is an urgent need for a waste gas heat recovery equipment for silicone oil production to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an exhaust gas heat energy recovery device for silicone oil production to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure, good heat energy recovery effect and high heat energy recovery efficiency.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical scheme: a waste gas heat energy recovery device for silicone oil production, comprising:

[0006] A heat recovery body, wherein a serpentine water pipe is arranged inside the heat recovery body, one end of the serpentine water pipe passes through the top of the heat recovery body and the other end passes through the bottom of the heat recovery body, both ends of the serpentine water pipe are provided with water outlet valves, two opposite side walls of the heat recovery body are provided with connecting pipes, a fan connected to one of the connecting pipes is arranged on the side wall of the heat recovery body, and an exhaust pipe is arranged on the side wall of the fan;

[0007] An insulation box is arranged on the side of the heat energy recovery body away from the fan, an air inlet pipe is arranged on one side of the insulation box and the other side is connected with the connecting pipe, a three-way valve is arranged on the side of the exhaust pipe away from the fan, an insulation pipe connected with the inside of the insulation box is arranged at the port on the top of the three-way valve, a first valve is arranged on the side wall of the insulation pipe, an outlet pipe is arranged on the port on the side wall of the three-way valve, a second valve is arranged on the side wall of the outlet pipe, and a temperature sensor is arranged on the side wall of the exhaust pipe for detecting the temperature of the exhaust gas passing through, and opening the first valve and closing the second valve when the temperature exceeds the set value.

[0008] Furthermore, a PLC controller is provided on the side wall of the heat recovery body, an A / D converter is provided at the input end of the PLC controller, a D / A converter is provided at the output end of the PLC controller, the temperature sensor is electrically connected to the A / D converter, and the first valve and the second valve are electrically connected to the D / A converter respectively.

[0009] Furthermore, the insulation pipe includes a delivery pipe arranged between a port at the top of the three-way valve and the insulation box, a side wall of the delivery pipe is provided with an insulation sleeve, and a first valve is arranged on the side wall of the delivery pipe.

[0010] Furthermore, a one-way valve is provided on the side wall of the delivery pipe.

[0011] Furthermore, a stirring motor is arranged on the top of the heat preservation box, and a stirring rod placed inside the heat preservation box is arranged on the output shaft of the stirring motor.

[0012] Furthermore, wind dispersion plates are provided on the inner walls on both sides opposite to each other of the heat recovery body, and a plurality of wind dispersion holes are provided on the sides of a pair of wind dispersion plates close to each other, and the wind dispersion plates are connected to the connecting pipe.

[0013] According to the utility model, a waste gas heat energy recovery device for silicone oil production detects the temperature of the exhaust pipe through a temperature sensor when the waste gas flows out from the exhaust pipe connected to the fan. When the temperature exceeds the set value, the first valve is opened and the second valve is closed, so that the waste gas that has not completely absorbed the heat energy flows back to the inside of the heat preservation box and flows through the serpentine water pipe to absorb the heat energy again, thereby avoiding the phenomenon of incomplete heat energy absorption, avoiding heat energy waste, and enhancing the heat energy recovery effect.

[0014] The stirring motor is driven to rotate the stirring rod, and the stirring rod rotates to stir the exhaust gas inside the heat preservation box, so that the exhaust gas is evenly mixed, so that the exhaust gas evenly enters the heat recovery body and flows through the serpentine water pipe to absorb the heat energy in the exhaust gas, thereby improving the efficiency of heat energy recovery. By opening a plurality of air dispersion holes on the side wall of the air dispersion plate, the exhaust gas entering the heat preservation box from the connecting pipe is evenly dispersed to the inside of the heat recovery body, so that the exhaust gas evenly contacts the serpentine water pipe, further improving the uniformity of exhaust gas distribution and improving the efficiency of heat energy recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 A three-dimensional diagram of an exhaust gas heat recovery device for silicone oil production according to an embodiment of the utility model;

[0017] Figure 2It is a front cross-sectional view of an exhaust gas heat energy recovery device for silicone oil production according to one embodiment of the utility model;

[0018] Figure 3 It is a front cross-sectional view of an air dispersion plate in an exhaust gas heat energy recovery device for silicone oil production according to one embodiment of the utility model;

[0019] Figure 4 A schematic diagram of a control system according to an embodiment of the utility model;

[0020] In the figure: 1. Heat recovery body; 2. Insulation box; 3. Inlet pipe; 4. Insulation pipe; 41. Delivery pipe; 42. Insulation sleeve; 5. Stirring motor; 51. Stirring rod; 6. Serpentine water pipe; 61. Water outlet valve; 7. Check valve; 8. PLC controller; 9. First valve; 10. Three-way valve; 11. Outlet pipe; 12. Second valve; 13. Temperature sensor; 14. Exhaust pipe; 15. Fan; 16. Connecting pipe; 17. Air dispersion plate; 18. Air dispersion hole. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1 As shown, the utility model provides a technical solution: a waste gas heat energy recovery device for silicone oil production, comprising:

[0023] A heat recovery body 1, wherein a serpentine water pipe 6 is arranged inside the heat recovery body 1, one end of the serpentine water pipe 6 passes through the top of the heat recovery body 1 and the other end passes through the bottom of the heat recovery body 1, and water outlet valves 61 are arranged at both ends of the serpentine water pipe 6, and connecting pipes 16 are arranged on the opposite side walls of the heat recovery body 1, and a fan 15 connected to one of the connecting pipes 16 is arranged on the side wall of the heat recovery body 1, and an exhaust pipe 14 is arranged on the side wall of the fan 15. The design absorbs heat energy in the waste gas generated during the production of silicone oil by passing the waste gas from the connecting pipe 16 into the serpentine water pipe 6 with water inside the heat recovery body 1, and the absorbed waste gas flows through the fan 15 from the connecting pipe 16 on the other side and is discharged, so as to absorb heat energy in the waste gas and thus facilitate recovery;

[0024] The heat recovery body 1 is provided with an insulation box 2 on the side away from the fan 15, an air inlet pipe 3 is provided on one side of the insulation box 2 and the other side is connected to the connecting pipe 16, a three-way valve 10 is provided on the side of the exhaust pipe 14 away from the fan 15, a heat preservation pipe 4 connected to the inside of the insulation box 2 is provided at the top port of the three-way valve 10, a first valve 9 is provided on the side wall of the heat preservation pipe 4, an outlet pipe 11 is provided at the side wall of the three-way valve 10, a second valve 12 is provided on the side wall of the outlet pipe 11, and a valve for detecting the temperature of the exhaust gas passing through the exhaust pipe 14 is provided on the side wall of the exhaust pipe 14. The temperature sensor 13 opens the first valve 9 and closes the second valve 12 when the set value is exceeded. When the exhaust gas flows out from the exhaust pipe 14 connected to the fan 15, the temperature sensor 13 detects the temperature flowing through the exhaust pipe 14. When it exceeds the set value, the first valve 9 is opened and the second valve 12 is closed, so that the exhaust gas that has not completely absorbed the heat energy flows back to the inside of the insulation box 2 and flows through the serpentine water pipe 6 to absorb the heat energy again, thereby avoiding the phenomenon of incomplete heat absorption, avoiding heat energy waste, and enhancing the heat energy recovery effect.

[0025] Reference Figure 1 and Figure 4 The side wall of the heat recovery body 1 is provided with a PLC controller 8, an A / D converter is provided at the input end of the PLC controller 8, a D / A converter is provided at the output end of the PLC controller 8, a temperature sensor 13 is electrically connected to the A / D converter, and a first valve 9 and a second valve 12 are electrically connected to the D / A converter respectively. The design enables the temperature sensor 13 to detect the temperature of the exhaust gas flowing through the exhaust pipe 14. When the temperature exceeds the set value, it indicates that the heat energy absorption is not complete, and the signal is transmitted to the PLC controller 8, and the PLC controller 8 opens the first valve 9 and the second valve 12. The valve 12 is closed, so that the exhaust gas that has not been completely absorbed flows back to the inside of the insulation box 2, and flows through the serpentine water pipe 6 again to absorb heat energy again, thereby avoiding the phenomenon of incomplete absorption of heat energy, avoiding heat energy waste, and enhancing the heat energy recovery effect. On the contrary, the detected exhaust gas temperature is less than or equal to the set value, indicating that the exhaust gas is completely absorbed, and the signal is transmitted to the PLC controller 8. The PLC controller 8 closes the first valve 9 and opens the second valve 12, thereby discharging the exhaust gas that has completely absorbed heat energy, wherein the exhaust gas that has completely absorbed heat energy is the exhaust gas whose detected exhaust gas temperature is less than or equal to the set value.

[0026] Reference Figure 2 The insulation pipe 4 includes a delivery pipe 41 arranged between the port at the top of the three-way valve 10 and the insulation box 2. The side wall of the delivery pipe 41 is provided with an insulation sleeve 42. The first valve 9 is arranged on the side wall of the delivery pipe 41. This design avoids the loss of heat energy of the exhaust gas during transportation, resulting in waste of heat energy. The side wall of the delivery pipe 41 is provided with a one-way valve 7. This design prevents the exhaust gas inside the insulation box 2 from being transported from the insulation pipe 4 to the three-way valve 10.

[0027] Reference Figure 1 and Figure 2 A stirring motor 5 is arranged on the top of the insulated box 2, and a stirring rod 51 placed inside the insulated box 2 is arranged on the output shaft of the stirring motor 5. This design drives the stirring rod 51 to rotate by the stirring motor 5. The stirring rod 51 rotates to stir the exhaust gas inside the insulated box 2, so that the exhaust gas is evenly mixed, so that the exhaust gas evenly enters the interior of the heat recovery body 1 and flows through the serpentine water pipe 6 to absorb the heat energy in the exhaust gas, thereby improving the efficiency of heat recovery.

[0028] Reference Figure 2 and Figure 3 The heat recovery body 1 is provided with air dispersion plates 17 on the inner walls on both sides opposite to each other. A pair of air dispersion plates 17 are provided with a plurality of air dispersion holes 18 on the sides close to each other. The air dispersion plates 17 are connected with the connecting pipe 16. This design facilitates the exhaust gas entering the heat preservation box 2 from the connecting pipe 16 to be evenly dispersed to the inside of the heat recovery body 1 by providing a plurality of air dispersion holes 18 on the side walls of the air dispersion plates 17, so that the exhaust gas is evenly contacted with the serpentine water pipe 6, further improving the uniformity of exhaust gas distribution and improving the efficiency of heat recovery. Another air dispersion plate 17 is provided with a plurality of air dispersion holes 18, so that the exhaust gas after absorbing heat energy is concentrated to the connecting pipe 16, so as to be conveniently discharged from the fan 15.

[0029] Reference Figure 1-Figure 4 As an embodiment of the utility model: when it is necessary to absorb and recover the heat energy in the exhaust gas generated during the production of silicone oil, the staff passes the exhaust gas into the insulation box 2 from the air inlet pipe 3, and at the same time, the stirring motor 5 is operated to drive the stirring rod 51 to rotate to stir the gas entering the insulation box 2, so that the gas is evenly distributed, and then flows through the connecting pipe 16 and flows out from the multiple air dispersion holes 18 of the air dispersion plate 17, further improving the uniformity of the exhaust gas distribution, making the exhaust gas evenly distributed and contacting with the serpentine water pipe 6, accelerating the absorption speed of the heat energy in the exhaust gas, and improving the efficiency of heat energy recovery.

[0030] The exhaust gas after absorbing heat energy is concentrated to the connecting pipe 16 under the action of another air dispersion plate 17, and is discharged from the fan 15. The exhaust gas flows through the exhaust pipe 14, and the temperature sensor 13 on the exhaust pipe 14 detects the exhaust gas flowing through. When the temperature exceeds the set value, it means that the heat energy is not completely absorbed. The signal is transmitted to the PLC controller 8. The PLC controller 8 opens the first valve 9 and closes the second valve 12, so that the exhaust gas that is not completely absorbed flows back to the inside of the insulation box 2, flows through the serpentine water pipe 6 again to absorb heat energy again, thereby avoiding the phenomenon of incomplete heat energy absorption, avoiding heat energy waste, and enhancing the heat energy recovery effect. On the contrary, the PLC controller 8 closes the first valve 9 and opens the second valve 12, so that the exhaust gas that has completely absorbed heat energy is discharged, thereby improving the practicality of the utility model.

[0031] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A waste gas heat recovery device for silicone oil production, comprising: A heat recovery body (1), wherein a serpentine water pipe (6) is arranged inside the heat recovery body (1), one end of the serpentine water pipe (6) passes through the top of the heat recovery body (1) and the other end passes through the bottom of the heat recovery body (1), both ends of the serpentine water pipe (6) are provided with water outlet valves (61), the two opposite side walls of the heat recovery body (1) are provided with connecting pipes (16), the side wall of the heat recovery body (1) is provided with a fan (15) connected to one of the connecting pipes (16), and the side wall of the fan (15) is provided with an exhaust pipe (14); It is characterized in that A heat preservation box (2) is arranged on the side of the heat recovery body (1) away from the fan (15); an air inlet pipe (3) is arranged on one side of the heat preservation box (2) and the other side is connected to the connecting pipe (16); a three-way valve (10) is arranged on the side of the exhaust pipe (14) away from the fan (15); a heat preservation pipe (4) connected to the inside of the heat preservation box (2) is arranged at the top port of the three-way valve (10); a first valve (9) is arranged on the side wall of the heat preservation pipe (4); an air outlet pipe (11) is arranged at the side wall of the three-way valve (10); a second valve (12) is arranged on the side wall of the air outlet pipe (11); and a temperature sensor (13) is arranged on the side wall of the exhaust pipe (14) for detecting the temperature of the exhaust gas flowing therethrough and opening the first valve (9) and closing the second valve (12) when the temperature exceeds a set value.

2. The waste gas heat recovery equipment for silicone oil production according to claim 1, characterized in that: A PLC controller (8) is arranged on the side wall of the heat recovery body (1); an A / D converter is arranged at the input end of the PLC controller (8); a D / A converter is arranged at the output end of the PLC controller (8); the temperature sensor (13) is electrically connected to the A / D converter; and the first valve (9) and the second valve (12) are electrically connected to the D / A converter respectively.

3. The waste gas heat recovery equipment for silicone oil production according to claim 1, characterized in that: The insulation pipe (4) comprises a delivery pipe (41) arranged between a port at the top of the three-way valve (10) and the insulation box (2), a side wall of the delivery pipe (41) is provided with an insulation sleeve (42), and the first valve (9) is arranged on the side wall of the delivery pipe (41).

4. The waste gas heat recovery equipment for silicone oil production according to claim 3, characterized in that: A one-way valve (7) is provided on the side wall of the delivery pipe (41).

5. The waste gas heat recovery equipment for silicone oil production according to claim 1, characterized in that: A stirring motor (5) is arranged on the top of the heat preservation box (2), and a stirring rod (51) placed inside the heat preservation box (2) is arranged on the output shaft of the stirring motor (5).

6. The waste gas heat recovery equipment for silicone oil production according to claim 1, characterized in that: The heat recovery body (1) is provided with air dispersion plates (17) on the inner walls on both sides opposite to each other, and a pair of the air dispersion plates (17) are provided with a plurality of air dispersion holes (18) on the sides close to each other, and the air dispersion plates (17) are connected to the connecting pipe (16).

Images