A reaction kettle cooling water waste heat utilization system

Abstract

The utility model discloses a kind of reaction kettle cooling water waste heat utilization systems, which belongs to waste heat utilization device.It mainly includes preheating tank, cooling water inlet pipeline one and cooling water outlet pipeline one are respectively fixedly connected on the upper lateral wall of preheating tank, heating cylinder is fixedly connected in preheating tank, top cover is bolted to the top of preheating tank, top cover top middle is fixedly connected with mounting bracket, mounting bracket top is fixedly connected with driving mechanism, the output shaft of driving mechanism is fixedly connected with stirring assembly, cooling water pipeline assembly is fixedly arranged outside preheating tank.The utility model is detected by setting cooling water pipeline assembly, and the cooling water temperature of different reaction kettle is guided, and the water inlet pipeline of low temperature is entered below preset temperature, and preheating tank is carried out heat preservation operation, and the cooling water that meets preset temperature enters high temperature water inlet pipeline, and solvent is directly heated by heating cylinder.The utility model is mainly used for the waste heat of reaction kettle cooling water.

Description

Technical Field

[0001] This utility model relates to waste heat utilization devices, and more specifically, to a waste heat utilization system for cooling water in a reaction vessel. Background Technology

[0002] During the cooling process of the reactor, the cooling water carries away a large amount of reaction heat. If this heat is directly released into the environment, it is a pure waste of energy. The waste heat utilization system of cooling water exchanges this waste heat with the medium that needs to be heated, without the need to consume additional fossil energy or electricity, and makes full use of the waste heat of the cooling water.

[0003] Chinese patent publication number "CN207591641U" discloses a waste heat utilization system for cooling water in a reaction vessel, including a dissolving tank, an outlet pipe, a connecting pipe, an inlet pipe, a fastening frame, a linear motor, a traction rod, a support frame, a drive motor, a hollow T-shaped platform, an inlet ring pipe, a pipe body connecting seat, a rotating rod, an outlet ring pipe, and a heat dissipation pipe. This system facilitates the full dissipation of waste heat, enabling the use of waste heat from the cooling water to heat the solvent and accelerate dissolution, achieving full utilization of heat. It also facilitates uniform heating of the solvent, has a stirring function to promote uniform dispersion of the solvent components, and the linear motor allows for easy replacement of the heating source for uniform heating. The drive motor, by driving the rotating rod, promotes overall rotation and facilitates solvent stirring.

[0004] During later use, the device also had the following problems: the waste heat of the reactor cooling water is medium-low temperature waste heat (usually 30-80℃), and its temperature and flow rate fluctuate drastically with the reactor's operating conditions: for example, rapid cooling is required in the early stages of the reaction, and the cooling water temperature rises to 60-80℃; in the later stages of the reaction, heat release decreases, and the cooling water temperature may drop to 30-40℃; the cooling water flow rate also changes. Furthermore, the production raw material solvent has strict requirements for preheating temperature (e.g., it needs to be stable at 40-50℃). Too low a temperature will affect the efficiency of subsequent reactions, while too high a temperature may cause the raw material to deteriorate or crystallize. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a waste heat utilization system for cooling water in a reactor. The system uses a cooling water pipeline assembly to detect and guide the cooling water temperature of different reactors. Water below the preset temperature enters the low-temperature inlet pipe to keep the preheating tank warm, while cooling water at the preset temperature enters the high-temperature inlet pipe to directly heat the solvent through a heating cylinder, ensuring the stability of the solvent preheating process.

[0006] The aforementioned reactor cooling water waste heat utilization system includes a preheating tank. A cooling water inlet pipe and a cooling water outlet pipe are fixedly connected to the upper side wall of the preheating tank. A discharge pipe is fixedly connected to the bottom of the preheating tank. A heating cylinder is fixedly connected inside the preheating tank. A top cover is bolted to the top of the preheating tank. A mounting bracket is fixedly connected to the middle of the top of the top cover. A drive mechanism is fixedly connected to the top of the mounting bracket. A stirring assembly is fixedly connected to the output shaft of the drive mechanism. The stirring assembly extends downward into the preheating tank. A feed pipe is also fixedly connected to the top of the top cover. An insulation cavity is fixedly connected to the outer wall of the bottom of the preheating tank. A second cooling water inlet pipe is fixedly connected to the bottom of the insulation cavity. A second cooling water outlet pipe is fixedly connected to the top side wall of the insulation cavity. The discharge pipe extends downward out of the insulation cavity. A cooling water pipe assembly is fixedly installed on the outer side of the preheating tank.

[0007] Preferably, the outer wall of the heating cylinder is fixedly connected to multiple sets of heat-conducting fins, the outer side of the heat-conducting fins is fixedly connected to the inner wall of the preheating tank, the interior of the heating cylinder is fixedly provided with two sets of through grooves and multiple layers of water flow chambers, water passage holes are fixedly provided between the through grooves and each layer of water flow chambers, multiple sets of guide plates are fixedly connected inside the water flow chambers, and both the cooling water inlet pipe and the cooling water outlet pipe extend inward into the through grooves.

[0008] Preferably, the upper part of the stirring assembly is fixedly connected to a diffusion plate, the bottom of the diffusion plate is fixedly connected to a spiral rod, the bottom of the spiral rod is fixedly connected to a pusher blade, the outside of the pusher blade is fixedly connected to a rotating ring, and the bottom of the rotating ring is fixedly connected to multiple sets of converging blades.

[0009] Preferably, the cooling water pipeline assembly includes a three-way valve, with a first pipe fixedly connected to the top of the three-way valve, a first manifold fixedly connected to the other end of the first pipe, a second pipe fixedly connected to the bottom of the three-way valve, and a second manifold fixedly connected to the other end of the second pipe.

[0010] Preferably, the first manifold is fixedly connected to the first cooling water inlet pipe, and the second manifold is fixedly connected to the second cooling water inlet pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a heating cylinder, the residual heat of the cooling water is fully utilized. The design of the through groove and multi-layer water flow chamber allows the cooling water to be distributed more evenly throughout the heating cylinder. The design of the guide plate can increase the full diffusion of the cooling water in the water flow chamber, avoid dead flow corners, and ensure the heating effect of the heating cylinder on the solvent. 2. By setting up a stirring component, the solvent is evenly attached to the heating cylinder for heat conduction. The solvent circulates inside the preheating tank and can fully contact both the inner and outer walls of the heating cylinder. 3. By setting up a cooling water pipeline assembly, the cooling water temperature of different reactors is detected. Water below the preset temperature enters the second cooling water inlet pipeline to keep the preheating tank warm. Cooling water at the preset temperature enters the first cooling water inlet pipeline and directly heats the solvent through the heating cylinder, ensuring the stability of the solvent preheating process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the insulation cavity; Figure 3 This is a schematic diagram of the exploded structure of the preheating tank and the stirring assembly; Figure 4 This is a schematic diagram of the internal heating cylinder of the preheating tank; Figure 5 This is a schematic diagram of the internal structure of the preheating tank; Figure 6 This is a schematic diagram of the stirring assembly. Figure 7 This is a schematic diagram of the internal structure of the heating cylinder.

[0013] In the diagram, 1. Cooling water piping assembly; 101. Three-way valve; 102. Pipe 1; 103. Manifold 1; 104. Pipe 2; 105. Manifold 2; 2. Preheating tank; 201. Cooling water inlet pipe 1; 202. Discharge pipe; 203. Cooling water outlet pipe 1; 3. Insulation cavity; 301. Cooling water inlet pipe 2; 302. Cooling water outlet pipe 2; 4. Top cover; 401. Feed pipe; 402. Mounting bracket; 5. Drive mechanism; 6. Mixing assembly; 601. Diffusion plate; 602. Spiral rod; 603. Pusher blade; 604. Rotary ring; 605. Gathering blade; 7. Heating cylinder; 701. Heat-conducting fins; 702. Through groove; 702A. Water passage hole; 703. Water flow chamber; 703A. Guide plate. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] like Figure 3 and Figure 5As shown, a waste heat utilization system for reactor cooling water includes a preheating tank 2. A cooling water inlet pipe 201 and a cooling water outlet pipe 203 are fixedly connected to the upper side wall of the preheating tank 2. Higher temperature cooling water enters the heating cylinder 7 through the cooling water inlet pipe 201 to preheat the solvent in the preheating tank 2, and is then discharged through the cooling water outlet pipe 203. A discharge pipe 202 is fixedly connected to the bottom of the preheating tank 2. After pre-stirring and heating, the solvent is discharged through the discharge pipe 202, ready to enter the reactor for final mixing. The heating cylinder 7 is fixedly connected inside the preheating tank 2. By setting the heating cylinder 7, the waste heat of the cooling water is fully utilized. The through-channel 702 and multi-layer flow chamber 703 allow the cooling water to be more evenly distributed throughout the heating cylinder 7. The guide plate 703A increases the diffusion of cooling water in the flow chamber 703, avoiding dead zones and ensuring the heating effect of the heating cylinder 7 on the solvent.

[0016] A top cover 4 is bolted to the top of the preheating tank 2. A mounting bracket 402 is fixedly connected to the middle of the top of the top cover 4. A drive mechanism 5 is fixedly connected to the top of the mounting bracket 402. A stirring assembly 6 is fixedly connected to the output shaft of the drive mechanism 5. The stirring assembly 6 extends downward into the preheating tank 2. The drive mechanism 5 includes a drive motor and a reducer, which drives the stirring assembly 6 to stir the solvent in the preheating tank 2. By setting the stirring assembly 6, the solvent is evenly attached to the heating cylinder 7 for heat conduction. The solvent flows axially upward and attaches to the inner wall of the heating cylinder 7. Then it is pushed outward by the diffusion plate 601. After radial diffusion, it attaches to the outer wall of the heating cylinder 7 along with the water flow. It flows axially downward to contact the gathering blade 605. After radial gathering, it is pushed upward again by the pusher blade 603. The solvent circulates inside the preheating tank 2 and can fully contact both the inner and outer walls of the heating cylinder 7.

[0017] The top of the top cover 4 is also fixedly connected to a feed pipe 401, through which the solvent enters the preheating tank 2; for example Figure 2 As shown, a heat-insulating cavity 3 is fixedly connected to the bottom outer wall of the preheating tank 2. A cooling water inlet pipe 301 is fixedly connected to the bottom of the heat-insulating cavity 3, and a cooling water outlet pipe 302 is fixedly connected to the top side wall of the heat-insulating cavity 3. The discharge pipe 202 extends downward out of the heat-insulating cavity 3, and a cooling water pipe assembly 1 is fixedly installed on the outside of the preheating tank 2. By setting the cooling water pipe assembly 1, the cooling water temperature of different reactors is detected. Water below the preset temperature enters the cooling water inlet pipe 301 to insulate the preheating tank 2. Cooling water at the preset temperature enters the cooling water inlet pipe 201 and directly heats the solvent through the heating cylinder 7, ensuring the stability of the solvent preheating process.

[0018] like Figure 4 and Figure 7As shown, multiple sets of heat-conducting fins 701 are fixedly connected to the outer wall of the heating cylinder 7. The outer side of the heat-conducting fins 701 is fixedly connected to the inner wall of the preheating tank 2. Two sets of through grooves 702 and multiple layers of water flow chambers 703 are fixedly opened inside the heating cylinder 7. Water passage holes 702A are fixedly opened between the through grooves 702 and each layer of water flow chambers 703. Multiple sets of guide plates 703A are fixedly connected inside the water flow chambers 703. The cooling water inlet pipe 201 and the cooling water outlet pipe 203 both extend inward into the through grooves 702.

[0019] By setting heat-conducting fins 701, the contact area between the heating cylinder 7 and the solvent is increased, the heat conduction speed is accelerated, and the heating cylinder 7 is fixedly supported; the cooling water first enters the first set of through grooves 702, and flows evenly from the water passage 702A to the multi-layer water flow chamber 703, where it spreads rapidly inside the heating cylinder 7, and finally flows into the cooling water outlet pipe 203 from another set of through grooves 702.

[0020] like Figure 6 As shown, a diffusion plate 601 is fixedly connected to the upper part of the stirring assembly 6, a spiral rod 602 is fixedly connected to the bottom of the diffusion plate 601, a pusher blade 603 is fixedly connected to the bottom of the spiral rod 602, a rotating ring 604 is fixedly connected to the outside of the pusher blade 603, and multiple sets of gathering blades 605 are fixedly connected to the bottom of the rotating ring 604.

[0021] The stirring assembly 6 rotates continuously, and the converging blades 605 and the diffusion plate 601 radially agitate the solvent, promoting radial mixing of the solvent. The pusher blades 603 push the solvent upward, and the screw rod 602 promotes a certain degree of radial diffusion of the solvent while continuing to push the solvent upward, so that the solvent flows upward and towards the inner wall of the heating cylinder 7.

[0022] like Figure 1 As shown, the cooling water pipeline assembly 1 includes a three-way valve 101. A first pipe 102 is fixedly connected to the top of the three-way valve 101, and a first manifold 103 is fixedly connected to the other end of the first pipe 102. A second pipe 104 is fixedly connected to the bottom of the three-way valve 101, and a second manifold 105 is fixedly connected to the other end of the second pipe 104. The first manifold 103 is fixedly connected to the first cooling water inlet pipe 201, and the second manifold 105 is fixedly connected to the second cooling water inlet pipe 301. The front of the three-way valve 101 is connected to the cooling water of different groups of reactors via pipes. Temperature sensors and control boards are fixedly installed on the pipes, which can constantly sense the residual temperature of the cooling water in different reactors and control the three-way valve 101 based on the residual temperature. Cooling water meeting the preset temperature flows to the first pipe 102 and directly enters the heating cylinder 7 to directly heat the solvent. Cooling water below the preset temperature flows to the second pipe 104 to insulate the preheating tank 2 and prevent heat loss from the preheating tank 2.

[0023] This invention utilizes a heating cylinder 7 to ensure full utilization of the residual heat of the cooling water. The through-channel 702 and multi-layered flow chamber 703 allow for more even distribution of cooling water throughout the heating cylinder 7. The guide plate 703A enhances the diffusion of cooling water within the flow chamber 703, preventing dead zones and ensuring effective heating of the solvent. A stirring assembly 6 ensures uniform contact between the solvent and the heating cylinder 7 for heat conduction, allowing the solvent to circulate within the preheating tank 2 and maintain full contact with both the inner and outer walls of the heating cylinder 7. A cooling water pipeline assembly 1 monitors the cooling water temperature of different reactors. Water below the preset temperature enters the second cooling water inlet pipeline 301 to maintain the temperature of the preheating tank 2. Cooling water at the preset temperature enters the first cooling water inlet pipeline 201 and directly heats the solvent through the heating cylinder 7, ensuring stability during solvent preheating.

Claims

1. A waste heat recovery system for cooling water in a reactor, characterized in that: The device includes a preheating tank, with a cooling water inlet pipe and a cooling water outlet pipe fixedly connected to the upper side wall of the preheating tank. A discharge pipe is fixedly connected to the bottom of the preheating tank. A heating cylinder is fixedly connected inside the preheating tank. A top cover is bolted to the top of the preheating tank. A mounting bracket is fixedly connected to the middle of the top of the top cover. A drive mechanism is fixedly connected to the top of the mounting bracket. A stirring assembly is fixedly connected to the output shaft of the drive mechanism. The stirring assembly extends downward into the preheating tank. A feed pipe is also fixedly connected to the top of the top cover. An insulation cavity is fixedly connected to the bottom outer wall of the preheating tank. A second cooling water inlet pipe is fixedly connected to the bottom of the insulation cavity. A second cooling water outlet pipe is fixedly connected to the top side wall of the insulation cavity. The discharge pipe extends downward out of the insulation cavity. A cooling water pipe assembly is fixedly installed on the outside of the preheating tank.

2. The waste heat recovery system for reactor cooling water according to claim 1, characterized in that: The outer wall of the heating cylinder is fixedly connected to multiple sets of heat-conducting fins. The outer side of the heat-conducting fins is fixedly connected to the inner wall of the preheating tank. The interior of the heating cylinder is fixedly provided with two sets of through slots and multiple layers of water flow chambers. Water passage holes are fixedly provided between the through slots and each layer of water flow chambers. Multiple sets of guide plates are fixedly connected inside the water flow chambers. Cooling water inlet pipe 1 and cooling water outlet pipe 1 both extend inward into the through slots.

3. The waste heat recovery system for reactor cooling water according to claim 1, characterized in that: The upper part of the stirring assembly is fixedly connected to a diffusion plate, the bottom of the diffusion plate is fixedly connected to a spiral rod, the bottom of the spiral rod is fixedly connected to a pusher blade, the outside of the pusher blade is fixedly connected to a rotating ring, and the bottom of the rotating ring is fixedly connected to multiple sets of converging blades.

4. The waste heat recovery system for reactor cooling water according to claim 1, characterized in that: The cooling water pipeline assembly includes a three-way valve, with a pipe 1 fixedly connected to the top of the three-way valve, a manifold 1 fixedly connected to the other end of the pipe 1, a pipe 2 fixedly connected to the bottom of the three-way valve, and a manifold 2 fixedly connected to the other end of the pipe 2.

5. The waste heat recovery system for reactor cooling water according to claim 4, characterized in that: The first manifold is fixedly connected to the first cooling water inlet pipe, and the second manifold is fixedly connected to the second cooling water inlet pipe.

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