Heat exchange system for polyamide dispersant production

Abstract

The utility model discloses a heat exchange system for polyamide dispersant production, which comprises a reaction kettle body, a liquid storage tank and a refrigerator, a top cover is arranged at the top end of the reaction kettle body, and a heat insulation sleeve is arranged on the outer side wall of the reaction kettle body; a cooling pipe is spirally sleeved on the outer side wall of the reaction kettle body in the thermal insulation sleeve, the bottom end of the cooling pipe is communicated with the liquid storage tank, the top end of the cooling pipe is communicated with the refrigerator, the refrigerator is communicated with the liquid storage tank through a return pipe, and a valve is arranged on the return pipe. The stirring device overcomes the defects in the prior art, is reasonable in design, can perform uniform heat exchange on materials by cooling the stirring blades through the cooling channel, and has higher social use value and application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of polyamide dispersant production, in particular to a heat exchange system for polyamide dispersant production. Background Art

[0002] In the production process of polyamide dispersant, the synthesis of polyamide dispersant includes three steps: namely, the ring-opening polymerization reaction of raw material cyclic ester monomers, the esterification reaction, and the amidation reaction by adding polyethyleneimine and succinic anhydride. Different stages of the reaction require different material temperatures. When the reaction kettle needs to be cooled, the material is usually cooled by a heat exchanger.

[0003] The existing heat exchangers of reaction kettles are difficult to exchange heat quickly and evenly, which will cause some materials in the reaction kettle to be heat-exchanged untimely, resulting in poor reaction effects. To solve the above problems, a heat exchange system for polyamide dispersant production that can uniformly exchange heat with materials by cooling the stirring blades through cooling channels is provided. Summary of the Utility Model

[0004] To solve the problems mentioned in the above background art, the utility model provides a heat exchange system for polyamide dispersant production.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A heat exchange system for polyamide dispersant production, including a reaction kettle body, a liquid storage tank, and a refrigerator. The top of the reaction kettle body is provided with a top cover, and the outer side wall of the reaction kettle body is provided with a heat preservation sleeve; a cooling pipe is spirally sleeved on the outer side wall of the reaction kettle body inside the heat preservation sleeve. The bottom end of the cooling pipe is communicated with the liquid storage tank, the top end of the cooling pipe is communicated with the refrigerator, and the refrigerator is communicated with the liquid storage tank through a return pipe. A valve is provided on the return pipe.

[0007] Preferably, a liquid inlet pipe is provided at the bottom end of the cooling pipe, an infusion pipe is provided on the side wall of the liquid storage tank, a liquid pump is provided on the infusion pipe, the side end of the infusion pipe is connected to the liquid inlet pipe through a three-way pipe, a liquid outlet pipe is provided at the top pipe of the cooling pipe, a liquid guide pipe is provided at the top of the refrigerator, and the liquid guide pipe is connected to the liquid outlet pipe through a second three-way pipe.

[0008] Preferably, a fixed shell is fixedly connected to the bottom end of the top cover. An inlet chamber and an outlet chamber are arranged in the fixed shell from bottom to top. Sealing bearings are arranged at the joints of the stirring shaft and the fixed shell. A liquid inlet channel is vertically arranged in the stirring shaft. Cooling channels are arranged on the stirring blades. The stirring blades are made of heat-conducting metal. The cooling channels are communicated through a connecting channel. An outlet channel is arranged in the stirring shaft. The liquid inlet channel is communicated with the cooling channels, and the end of the cooling channel is communicated with the outlet channel.

[0009] Preferably, the liquid inlet channel is provided with a liquid inlet in the liquid inlet cavity, and the liquid outlet channel is provided with a liquid outlet in the liquid outlet cavity.

[0010] Preferably, a second liquid inlet pipe is provided on the side wall of the fixed shell. One end of the second liquid inlet pipe is communicated with the liquid inlet cavity, and the other end of the second liquid inlet pipe is connected to the liquid infusion pipe through a three-way pipe. A second liquid outlet pipe is provided on the side wall of the fixed shell. One end of the second liquid outlet pipe is communicated with the liquid outlet cavity, and the other end of the second liquid outlet pipe is connected to the liquid guiding pipe through a second three-way pipe.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The coolant in the liquid storage tank is pumped into the cooling pipe sleeved on the outer side wall of the reaction kettle body for heat exchange, flows into the liquid guiding pipe through the liquid outlet pipe, and then randomly enters the refrigerator for cooling. The valve is opened, and the coolant that reaches the appropriate temperature after cooling flows to the liquid storage tank for reuse and enters the cooling pipe for heat exchange. Through the cyclic refrigeration and heat exchange of the coolant, while the heat exchange effect is good, the waste of coolant can be avoided.

[0013] 2. The motor drives the stirring shaft to rotate, thereby driving the stirring blades to stir the raw materials. While the liquid pump pumps the coolant in the liquid storage tank into the liquid inlet pipe, it also pumps it into the liquid inlet cavity. The coolant in the liquid inlet cavity flows through the liquid inlet into the liquid inlet channel, and the coolant passes through the liquid inlet channel and flows into the cooling channels opened in each stirring blade, and then enters the liquid outlet channel, flows out from the liquid outlet to the liquid outlet cavity. The coolant in the liquid outlet cavity is introduced into the refrigerator through the second liquid outlet pipe. While using the cooling pipe for heat exchange, the stirring blades are cooled by the coolant, and the stirring blades contact the materials for heat exchange, so as to realize efficient and uniform heat exchange of the materials.

[0014] In summary, the present utility model overcomes the deficiencies of the prior art, is reasonably designed, and can uniformly heat exchange the materials through the cooling channels to cool the stirring blades, and has high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the cooling pipe structure of the present utility model;

[0018] Figure 3 Schematic diagram of the top cover structure of the present utility model;

[0019] Figure 4 Schematic diagram of the fixed shell structure of the present utility model;

[0020] Figure 5 Schematic diagram of the cooling channel structure of the present utility model.

[0021] In the figure: 1, reactor body; 2, top cover; 3, heat preservation sleeve; 31, sealing ring; 4, cooling pipe; 401, liquid inlet pipe; 402, liquid outlet pipe; 41, liquid storage tank; 411, liquid delivery pipe; 412, liquid pump; 413, three-way pipe; 42, refrigerator; 421, liquid guide pipe; 4211, second three-way pipe; 422, return pipe; 4221, valve; 21, stirring shaft; 22, stirring blade; 23, motor; 24, sealed bearing; 5, fixed shell; 51, liquid inlet chamber; 52, liquid outlet chamber; 501, second liquid inlet pipe; 502, second liquid outlet pipe; 53, liquid inlet channel; 531, cooling channel; 532, liquid inlet; 54, connection channel; 541, liquid outlet channel; 542, liquid outlet. Specific embodiments

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Refer to Figures 1-5 , a heat exchange system for the production of polyamide dispersant, comprising a reactor body 1, a liquid storage tank 41 and a refrigerator 42. A top cover 2 is provided at the top of the reactor body 1, and a heat preservation sleeve 3 is provided on the outer side wall of the reactor body 1. The heat preservation sleeve 3 is used to keep the internal environment of the reactor body 1 warm, and a sealing ring 31 is provided at the connection between the heat preservation sleeve 3 and the reactor body 1;

[0025] A cooling pipe 4 is spirally sleeved on the outer side wall of the reactor body 1 and located inside the heat insulation jacket 3. A liquid inlet pipe 401 is provided at the bottom end of the cooling pipe 4. A liquid delivery pipe 411 is provided on the side wall of the liquid storage tank 41. A liquid pump 412 is provided on the liquid delivery pipe 411. The side end of the liquid delivery pipe 411 is connected to the liquid inlet pipe 401 through a three-way pipe 413. An outlet pipe 402 is provided at the top pipe of the cooling pipe 4. A liquid guide pipe 421 is provided at the top of the refrigerator 42. The liquid guide pipe 421 is connected to the outlet pipe 402 through a second three-way pipe 4211. The refrigerator 42 is communicated with the liquid storage tank 41 through a return pipe 422. A valve 4221 is provided on the return pipe 422.

[0026] Start the liquid pump 412 to pump the coolant in the liquid storage tank 41 into the cooling pipe 4 sleeved on the outer side wall of the reactor body 1 for heat exchange, flow into the liquid guide pipe 421 through the outlet pipe 402, and then randomly enter the refrigerator 42 for cooling. Open the valve 4221, and the coolant that reaches the appropriate temperature after cooling flows to the liquid storage tank 41 for reuse and enters the cooling pipe 4 for heat exchange. Through the circulation of the coolant for refrigeration and heat exchange, while having good heat exchange effect, it can avoid waste of coolant and save resources.

[0027] Embodiment 2

[0028] According to Figures 1-5 As shown in the figure, a stirring shaft 21 is rotatably connected to the top cover 2. Stirring blades 22 are provided on the stirring shaft 21. A motor 23 is provided at the top end of the top cover 2. The output end of the motor 23 is fixedly connected to the stirring shaft 21. While conducting heat exchange, start the motor 23 to drive the stirring shaft 21 to rotate, thereby driving the stirring blades 22 to stir the raw materials, so that the raw materials are heated evenly.

[0029] A fixed shell 5 is fixedly connected to the bottom end of the top cover 2. An inlet liquid cavity 51 and an outlet liquid cavity 52 are provided in the fixed shell 5 from bottom to top. Sealing bearings 24 are provided at the connection between the stirring shaft 21 and the fixed shell 5. A liquid inlet channel 53 is vertically opened in the stirring shaft 21. Cooling channels 531 are opened on the stirring blades 22. The stirring blades 22 are made of heat-conducting metal. The cooling channels 531 are communicated through a connection channel 54. A liquid outlet channel 541 is opened in the stirring shaft 21. The liquid inlet channel 53 is communicated with the cooling channels 531. The end of the cooling channel 531 is communicated with the liquid outlet channel 541. A liquid inlet port 532 is opened in the liquid inlet channel 53 in the inlet liquid cavity 51. A liquid outlet port 542 is opened in the liquid outlet channel 541 in the outlet liquid cavity 52.

[0030] Furthermore, a second liquid inlet pipe 501 is provided on the side wall of the fixed shell 5. One end of the second liquid inlet pipe 501 is communicated with the inlet liquid cavity 51, and the other end of the second liquid inlet pipe 501 is connected to the liquid delivery pipe 411 through a three-way pipe 413. A second liquid outlet pipe 502 is provided on the side wall of the fixed shell 5. One end of the second liquid outlet pipe 502 is communicated with the outlet liquid cavity 52, and the other end of the second liquid outlet pipe 502 is connected to the liquid guide pipe 421 through a second three-way pipe 4211.

[0031] While exchanging heat, start the motor 23 to drive the stirring shaft 21 to rotate, thereby driving the stirring blades 22 to stir the raw materials, so that the raw materials are evenly heated. While the liquid pump 412 pumps the coolant in the liquid storage tank 41 into the liquid inlet pipe 401, it also pumps it into the liquid inlet chamber 51. The coolant in the liquid inlet chamber 51 flows through the liquid inlet port 532 into the liquid inlet passage 53. The coolant flows through the liquid inlet passage 53 into the cooling channels 531 opened in each stirring blade 22, then enters the liquid outlet passage 541, and flows out from the liquid outlet 542 into the liquid outlet chamber 52. The coolant in the liquid outlet chamber 52 is introduced into the refrigerator 42 through the second liquid outlet pipe 502, and after cooling, it enters the liquid storage tank 41 for recycling. While using the cooling pipe 4 to exchange heat, the stirring blades 22 are cooled by the coolant. The stirring blades 22 contact the material to exchange heat, so as to realize efficient and uniform heat exchange of the material.

[0032] Working principle: Start the liquid pump 412 to pump the coolant in the liquid storage tank 41 into the cooling pipe 4 sleeved on the outer wall of the reaction kettle body 1 for heat exchange, flow into the liquid guide pipe 421 through the liquid outlet pipe 402, and then enter the refrigerator 42 for cooling. Open the valve 4221, and the coolant that reaches the appropriate temperature after cooling flows to the liquid storage tank 41 for reuse and enters the cooling pipe 4 for heat exchange; start the motor 23 to drive the stirring shaft 21 to rotate, thereby driving the stirring blades 22 to stir the raw materials. At the same time, while the liquid pump 412 pumps the coolant in the liquid storage tank 41 into the liquid inlet pipe 401, it also pumps it into the liquid inlet chamber 51. The coolant in the liquid inlet chamber 51 flows through the liquid inlet port 532 into the liquid inlet passage 53. The coolant flows through the liquid inlet passage 53 into the cooling channels 531 opened in each stirring blade 22, then enters the liquid outlet passage 541, and flows out from the liquid outlet 542 into the liquid outlet chamber 52. The coolant in the liquid outlet chamber 52 is introduced into the refrigerator 42 through the second liquid outlet pipe 502.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "arranged", "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common general knowledge in the art. Moreover, the present utility model is mainly used to protect mechanical devices. Therefore, the control mode and circuit connection of the present utility model will not be explained in detail herein.

[0036] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present utility model.

Claims

1. A heat exchange system for the production of polyamide dispersant, comprising a reaction kettle body (1), a liquid storage tank (41) and a refrigerator (42), characterized in that: The top of the reactor body (1) is provided with a top cover (2), and a heat preservation jacket (3) is arranged on the outer side wall of the reactor body (1); A cooling pipe (4) is spirally sleeved on the outer side wall of the reactor body (1) inside the heat preservation jacket (3). The bottom end of the cooling pipe (4) is communicated with a liquid storage tank (41), and the top end of the cooling pipe (4) is communicated with a refrigerator (42). The refrigerator (42) is communicated with the liquid storage tank (41) through a reflux pipe (422); The bottom end of the top cover (2) is fixedly connected with a fixed shell (5). An inlet chamber (51) and an outlet chamber (52) are arranged in the fixed shell (5) from bottom to top. A liquid inlet channel (53) is vertically arranged in the stirring shaft (21). A cooling channel (531) is arranged on the stirring blade (22). A liquid outlet channel (541) is arranged in the stirring shaft (21). The liquid inlet channel (53) is communicated with the cooling channel (531), and the end of the cooling channel (531) is communicated with the liquid outlet channel (541).

2. A heat exchange system for the production of a polyamide dispersant according to claim 1, characterized in that: A liquid inlet pipe (401) is arranged at the bottom end of the cooling pipe (4). A liquid delivery pipe (411) is arranged on the side wall of the liquid storage tank (41). A liquid pump (412) is arranged on the liquid delivery pipe (411). The side end of the liquid delivery pipe (411) is connected with the liquid inlet pipe (401) through a three-way pipe (413). A liquid outlet pipe (402) is arranged at the top pipe of the cooling pipe (4). A liquid guide pipe (421) is arranged at the top of the refrigerator (42). The liquid guide pipe (421) is connected with the liquid outlet pipe (402) through a second three-way pipe (4211).

3. A heat exchange system for the production of a polyamide dispersant according to claim 1, characterized in that: The liquid inlet channel (53) is provided with a liquid inlet (532) in the inlet chamber (51), and the liquid outlet channel (541) is provided with a liquid outlet (542) in the outlet chamber (52).

4. A heat exchange system for the production of a polyamide dispersant according to claim 1, characterized in that: A second liquid inlet pipe (501) is arranged on the side wall of the fixed shell (5). One end of the second liquid inlet pipe (501) is communicated with the inlet chamber (51), and the other end of the second liquid inlet pipe (501) is connected with the liquid delivery pipe (411) through a three-way pipe (413). A second liquid outlet pipe (502) is arranged on the side wall of the fixed shell (5). One end of the second liquid outlet pipe (502) is communicated with the outlet chamber (52), and the other end of the second liquid outlet pipe (502) is connected with the liquid guide pipe (421) through a second three-way pipe (4211).

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