Aqueous solution polymerization equipment for preparing polyacrylamide

Abstract

The utility model discloses aqueous solution polymerization equipment for preparing polyacrylamide, and relates to the technical field of polyacrylamide preparation. The reaction tank comprises a reaction tank body, a heat dissipation assembly is arranged on the upper portion in the reaction tank body, and a discharging assembly is further arranged at the bottom of the reaction tank body. A lifting plate in the heat dissipation assembly is movably connected to the upper portion of the reaction tank, connecting rods are welded to the periphery of the lower surface of the lifting plate, the ends, away from the lifting plate, of the connecting rods movably penetrate through the top of the reaction tank and are welded with a mounting plate, and fins penetrate through the periphery of the surface of the mounting plate. The heat dissipation speed of an aqueous solution in the reaction tank is increased through the fins and the heat exchange tubes I, the problem that the polymerization temperature of the aqueous solution is inconvenient to control in the prior art is solved, a solvent in a polymer is heated and evaporated through the heat exchange tubes II in the discharging shell, and meanwhile, the solvent is condensed and recycled through the condensation plate, so that the production efficiency is improved. The problem that in the prior art, a solvent in polymerization discharged materials is inconvenient to remove is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyacrylamide preparation, in particular to aqueous solution polymerization equipment for preparing polyacrylamide. Background Art

[0002] Polyacrylamide is a linear high molecular polymer with good thermal stability. It can be dissolved in water in any proportion. Its aqueous solution is a uniform and transparent liquid. It is often used as a lubricant, suspending agent, clay stabilizer, oil displacement agent, fluid loss agent and thickener. It is an extremely important oilfield chemical. A large number of equipment are used in the production and preparation of polyacrylamide, among which aqueous solution polymerization equipment is the most common polyacrylamide preparation equipment.

[0003] The existing document with publication number CN221085380U discloses an aqueous solution mixing and stirring device, including a stirring tank, a driving module, and a transmission shaft; the characteristics are: it also includes a stirring paddle assembly, an extension piece, an intermediate connecting piece, and a stirring blade assembly;

[0004] However, it still has the following disadvantages in actual use:

[0005] The stirring device mentioned above includes a stirring tank, a driving module, a transmission shaft, a stirring paddle assembly, an extension piece, an intermediate connecting piece, and a stirring blade assembly. The stirring paddle assembly and the stirring blade assembly drive the aqueous solution in the stirring tank to stir, so that the aqueous solution is polymerized. However, since the polymerization of the aqueous solution will release a large amount of heat, and the stirring device mentioned above lacks a heat dissipation structure, the heat in the stirring tank can only be discharged with the gas, and the heat dissipation capacity is poor, which makes it difficult to control the discharge temperature of the aqueous solution polymerization, thereby affecting the polymerization effect of the aqueous solution;

[0006] The stirring device mentioned above includes a stirring tank, a driving module, a transmission shaft, a stirring paddle assembly, an extension piece, an intermediate connecting piece, and a stirring blade assembly. The stirring paddle assembly and the stirring blade assembly drive the aqueous solution in the stirring tank to be stirred, thereby polymerizing the aqueous solution. However, during use, the discharge from the stirring tank will be mixed with solvent, thereby affecting the discharge concentration.

[0007] To this end, we provide an aqueous solution polymerization device for preparing polyacrylamide to solve the above-mentioned problems. Utility Model Content

[0008] The utility model aims to provide an aqueous solution polymerization device for preparing polyacrylamide, which accelerates the heat dissipation speed of the aqueous solution in the reaction tank through fins and a heat exchange tube, thereby solving the problem that it is inconvenient to control the polymerization temperature of the aqueous solution in the prior art, and heats and evaporates the solvent in the polymer through a heat exchange tube in a discharge shell, and condenses and recovers the solvent through a condensation plate, thereby solving the problem that it is inconvenient to remove the solvent in the polymerization discharge in the prior art.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is an aqueous solution polymerization device for preparing polyacrylamide, comprising a reaction tank, a heat dissipation component is arranged above the interior of the reaction tank, and a discharging component is also arranged at the bottom of the reaction tank;

[0011] The lifting plate in the heat dissipation assembly is movably connected to the top of the reaction tank, and connecting rods are welded around the lower surface of the lifting plate. The end of the connecting rod away from the lifting plate movably penetrates the top of the reaction tank and is welded with a mounting plate. Fins are penetrated around the surface of the mounting plate, and the end of the fin located above the mounting plate is penetrated by a heat exchange tube.

[0012] A discharge shell in the discharge assembly is located at the bottom of the reaction tank, a plurality of groups of heat exchange tubes are fixedly connected inside the discharge shell at equal intervals in the longitudinal direction, a condensation shell is fixedly connected to the top of the discharge shell, and a plurality of groups of condensation plates are fixedly connected to the inner top and bottom of the condensation shell at equal intervals in the longitudinal direction, wherein the condensation plates located at the inner top of the condensation shell and the condensation plates located at the inner bottom of the condensation shell are arranged alternately.

[0013] The utility model is further configured as follows: hydraulic cylinders are fixedly connected to the top of the reaction tank on all sides, and piston shafts of the hydraulic cylinders are fixedly connected to the lower surface of the lifting plate on all sides.

[0014] The utility model is further configured as follows: a driving motor is fixedly connected to the top center position of the reaction tank, the output shaft of the driving motor rotates through the top of the reaction tank and is fixedly connected to a rotating shaft through a coupling, and a plurality of groups of stirring blades are sleeved on the outer side of the rotating shaft.

[0015] The utility model is further configured as follows: both ends of the heat exchange tube 1 are fixedly connected with telescopic hoses, and one end of the telescopic hose away from the heat exchange tube 1 penetrates the top of the reaction tank and extends to the top of the reaction tank.

[0016] The utility model is further configured as follows: a discharge pipe is fixedly connected to the bottom of the reaction tank, an end of the discharge pipe away from the reaction tank is fixedly connected to a connecting pipe 1 through a discharge valve, an end of the connecting pipe 1 away from the discharge valve is fixedly connected to the rear end surface of the condensation shell, and a connecting pipe 2 is fixedly connected to the front end surface of the condensation shell.

[0017] The utility model is further configured as follows: two ends of the second heat exchange tube respectively penetrate the two sides of the bottom of the discharge shell and are respectively fixedly connected with an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe are respectively located on the two sides below the discharge shell.

[0018] The utility model is further configured as follows: a connecting pipe three is fixedly connected on the front end surface of the condensing shell, an end of the connecting pipe three away from the condensing shell is fixedly connected to the top front end of the discharge shell, and an exhaust pipe is fixedly connected on the rear end surface of the condensing shell.

[0019] The utility model is further configured as follows: a U-shaped cavity is opened on the inner side of the condensation plate, the water inlet and water outlet of the U-shaped cavity are fixedly connected with a water inlet pipe and a water outlet pipe respectively, the ends of the water inlet pipe and the water outlet pipe away from the condensation plate respectively penetrate the upper and lower sides of the outer wall of one side of the condensation shell and are fixedly connected with a water distributor and a water combiner respectively, and the ends of the water distributor and the water combiner away from the condensation shell are fixedly connected with a connecting pipe four.

[0020] The utility model has the following beneficial effects:

[0021] The utility model provides a heat dissipation component, and drives the mounting plate and the fins to be raised and lowered by the lifting plate, so that the fins are in contact with the aqueous solution in the reaction tank, and cold water is provided to the heat exchange tube one through the telescopic hose, so that the fins of the heat exchange tube one are cooled, and the aqueous solution in the reaction tank is cooled and dissipated by the fins, thereby accelerating the heat dissipation in the reaction tank, thereby facilitating the control of the polymerization temperature.

[0022] The utility model provides a discharge assembly, heats the aqueous solution after polymerization through two heat exchange tubes in the discharge shell, thereby evaporating the solvent in the aqueous solution, and condenses the solvent through a condensation plate in the condensation shell, thereby achieving the removal of the solvent from the discharge after polymerization, thereby increasing the concentration of the polymer and facilitating the control of the concentration of the polymer.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of an aqueous solution polymerization device for preparing polyacrylamide;

[0026] Figure 2It is a side sectional view of the reaction tank of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the heat dissipation component of the utility model;

[0028] Figure 4 This is a structural schematic diagram of the lifting plate of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the fin of the utility model;

[0030] Figure 6 It is a side cross-sectional view of the discharging assembly of the utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the heat exchange tube 2 of the utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the condensation plate of the utility model;

[0033] Fig. 9 It is a front cross-sectional view of the condensation plate of the utility model.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 100-reaction tank, 101-driving motor, 102-rotating shaft, 103-stirring blade, 104-discharging pipe, 105-discharging valve, 200-heat dissipation assembly, 201-lifting plate, 201a-connecting rod, 201b-hydraulic cylinder, 202-mounting plate, 203-fin, 204-heat exchange tube 1, 204a-telescopic hose, 300-discharging assembly, 301-discharging shell, 301a-connecting pipe one, 301b-connecting pipe two, 302-heat exchange pipe two, 302a-inlet pipe, 302b-outlet pipe, 303-condensation shell, 303a-connecting pipe three, 303b-exhaust pipe, 304-condensation plate, 304a-U-shaped cavity, 304b-water inlet pipe, 304c-water outlet pipe, 305-water distributor, 305a-connecting pipe four, 306-water combiner. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0037] See also Figure 1 , Figure 2, Figure 3 , Figure 4 and Figure 5 As shown, it is the first embodiment of the utility model, which provides an aqueous solution polymerization device for preparing polyacrylamide, including a reaction tank 100, wherein a heat dissipation component 200 is arranged above the interior of the reaction tank 100, and the heat dissipation component 200 includes a lifting plate 201, a mounting plate 202, fins 203 and a heat exchange tube 204. The lifting plate 201 and the mounting plate 202 drive the fins 203 to contact the aqueous solution in the reaction tank 100, and the heat exchange tube 204 is used to reduce the temperature of the fins 203, thereby accelerating the heat dissipation speed of the aqueous solution in the reaction tank 100, and solving the problem of the inconvenience of controlling the polymerization temperature.

[0038] Specifically, the lifting plate 201 is movably connected to the top of the reaction tank 100, and connecting rods 201a are welded around the lower surface of the lifting plate 201. One end of the connecting rod 201a away from the lifting plate 201 movably penetrates the top of the reaction tank 100 and is welded with a mounting plate 202. Fins 203 are penetrated on all sides of the surface of the mounting plate 202, and one end of the fin 203 located above the mounting plate 202 is penetrated by a heat exchange tube 204. The lifting plate 201 is used to drive the mounting plate 202 to move, and the connecting rod 201a is used to connect the lifting plate 201 and the mounting plate 202. The mounting plate 202 is used to install the fin 203. The fin 203 is used to dissipate heat for the aqueous solution in the reaction tank 100. Cold water flows in the heat exchange tube 204, and the temperature of the fin 203 is reduced through the heat exchange tube 204, thereby further accelerating the heat dissipation of the aqueous solution.

[0039] Furthermore, a driving motor 101 is fixedly connected to the center of the top of the reaction tank 100, and the output shaft of the driving motor 101 rotates and penetrates the top of the reaction tank 100 and is fixedly connected to a rotating shaft 102 through a coupling, and a plurality of groups of stirring blades 103 are sleeved on the outer side of the rotating shaft 102. The reaction tank 100 is also provided with a feed port, a pressure relief port and other structures. When the driving motor 101 is started, the output shaft of the driving motor 101 drives the stirring blades 103 to rotate inside the reaction tank 100 through the rotating shaft 102, thereby accelerating the polymerization of the polyacrylamide aqueous solution through the stirring blades 103;

[0040] The top of the reaction tank 100 is fixedly connected to a hydraulic cylinder 201b on all sides, and the piston shaft of the hydraulic cylinder 201b is fixedly connected to the lower surface of the lifting plate 201 on all sides;

[0041] Both ends of the heat exchange tube 204 are fixedly connected with a telescopic hose 204a, and the end of the telescopic hose 204a away from the heat exchange tube 204 passes through the top of the reaction tank 100 and extends to the top of the reaction tank 100. The end of the telescopic hose 204a away from the heat exchange tube 204 is externally connected to a cold water tank for providing cold water to the heat exchange tube 204.

[0042] The operation process of this embodiment is as follows: when it is necessary to speed up the heat dissipation speed of the aqueous solution in the reaction tank 100, the hydraulic cylinder 201b is started, and the lifting plate 201 is driven to move by the hydraulic cylinder 201b, so that the lifting plate 201 drives the mounting plate 202 to move through the connecting rod 201a, so that the lower end of the fin 203 on the mounting plate 202 is located in the aqueous solution, and then the heat exchange tube 1 204 is connected to the cold water tank through the telescopic hose 204a, and the cold water in the cold water tank enters the heat exchange tube 1 204 through the telescopic hose 204a, so that the temperature of the fin 203 is reduced through the heat exchange tube 1 204, and the aqueous solution is cooled by the fin 203, thereby realizing rapid heat dissipation of the aqueous solution in the reaction tank 100. Embodiment 2

[0043] See also Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, it is the second embodiment of the utility model, which is based on the previous embodiment, but is different from the previous embodiment in that a discharge assembly 300 is also arranged at the bottom of the reaction tank 100, and the discharge assembly 300 includes a discharge shell 301, a second heat exchange tube 302, a condensation shell 303 and a condensation plate 304. The solvent in the aqueous solution polymer is heated and evaporated by the discharge shell 301 and the second heat exchange tube 302, and the solvent is condensed and recovered by the condensation shell 303 and the condensation plate 304, which solves the existing problem of inconvenience in removing the solvent from the polymer.

[0044] Specifically, the discharge shell 301 is located at the bottom of the reaction tank 100, and multiple groups of heat exchange tubes 302 are fixedly connected to the inside of the discharge shell 301 at equal intervals in the longitudinal direction. The top of the discharge shell 301 is fixedly connected to the condensation shell 303, and the inner top and bottom of the condensation shell 303 are fixedly connected to multiple groups of condensation plates 304 at equal intervals in the longitudinal direction, wherein the condensation plates 304 located at the inner top of the condensation shell 303 and the condensation plates 304 located at the inner bottom of the condensation shell 303 are arranged in a staggered manner. The arrangement of the discharge shell 301 is used to The heat exchange tube 302 and other structures are installed. Hot air flows inside the heat exchange tube 302 to heat the polymer discharge flowing through the discharge shell 301, so that the solvent mixed therein evaporates. The condensation shell 303 is used to install the condensation plate 304 and other structures, and the condensation shell 303 is also provided with a solvent discharge port to recover the condensed solvent. The condensation plate 304 is used to condense the gas flowing through the condensation shell 303, so as to recover and reuse the evaporated solvent.

[0045] Further, the bottom of the reaction tank 100 is fixedly connected with a discharge pipe 104, and one end of the discharge pipe 104 away from the reaction tank 100 is fixedly connected with a connecting pipe 1 301a through a discharge valve 105, and one end of the connecting pipe 1 301a away from the discharge valve 105 is fixedly connected to the rear end surface of the condensation shell 303, and the front end surface of the condensation shell 303 is fixedly connected with a connecting pipe 2 301b;

[0046] The two ends of the second heat exchange tube 302 respectively penetrate the two sides of the bottom of the discharge shell 301 and are fixedly connected with an air inlet pipe 302a and an air outlet pipe 302b. The air inlet pipe 302a and the air outlet pipe 302b are respectively located on the two sides below the discharge shell 301. One end of the air inlet pipe 302a and the air outlet pipe 302b are both externally connected to a steam box to provide hot air to the second heat exchange tube 302.

[0047] The front end surface of the condensation shell 303 is fixedly connected with a connection pipe 303a, one end of the connection pipe 303a away from the condensation shell 303 is fixedly connected to the top front end of the discharge shell 301, and the rear end surface of the condensation shell 303 is fixedly connected with an exhaust pipe 303b;

[0048] A U-shaped cavity 304a is provided on the inner side of the condensation plate 304, and the water inlet and water outlet of the U-shaped cavity 304a are fixedly connected with a water inlet pipe 304b and a water outlet pipe 304c respectively. The ends of the water inlet pipe 304b and the water outlet pipe 304c away from the condensation plate 304 respectively penetrate the upper and lower sides of the outer wall of one side of the condensation shell 303 and are fixedly connected with a water divider 305 and a water combiner 306 respectively. The ends of the water divider 305 and the water combiner 306 away from the condensation shell 303 are fixedly connected with a connecting pipe four 305a. The end of the connecting pipe four 305a away from the water divider 305 and the water combiner 306 is externally connected to a cold water tank for providing cold water to the water divider 305 and the water combiner 306, so that cold water flows in the U-shaped cavity 304a of the condensation plate 304.

[0049] The rest of the structure is the same as that of the first embodiment.

[0050] The operation process of this embodiment is: open the discharge valve 105, so that the polyacrylamide aqueous solution that has completed polymerization in the reaction tank 100 enters the discharge shell 301 through the discharge pipe 104 and the connecting pipe 1 301a, and the hot air in the heat exchange tube 2 302 is used to heat and evaporate the polyacrylamide aqueous solution, so that the solvent enters the condensation shell 303 along with the gas through the connecting pipe 3 303a, and at the same time, the gas in the condensation shell 303 is cooled and condensed by the condensation plate 304, so that the solvent is re-condensed into liquid, and the remaining gas is discharged through the exhaust pipe 303b.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An aqueous solution polymerization device for preparing polyacrylamide, comprising a reaction tank (100), characterized in that: A heat dissipation component (200) is disposed above the interior of the reaction tank (100), and a material discharge component (300) is also disposed at the bottom of the reaction tank (100); The lifting plate (201) in the heat dissipation component (200) is movably connected to the top of the reaction tank (100), and connecting rods (201a) are welded around the lower surface of the lifting plate (201), one end of the connecting rod (201a) away from the lifting plate (201) movably penetrates the top of the reaction tank (100) and is welded to a mounting plate (202), and fins (203) are penetrated around the surface of the mounting plate (202), and one end of the fin (203) located above the mounting plate (202) is penetrated by a heat exchange tube 1 (204); The discharge shell (301) in the discharge assembly (300) is located at the bottom of the reaction tank (100), and a plurality of groups of heat exchange tubes (302) are fixedly connected inside the discharge shell (301) at equal intervals in the longitudinal direction, a condensation shell (303) is fixedly connected to the top of the discharge shell (301), and a plurality of groups of condensation plates (304) are fixedly connected to the inner top and bottom of the condensation shell (303) at equal intervals in the longitudinal direction, wherein the condensation plates (304) located at the inner top of the condensation shell (303) and the condensation plates (304) located at the inner bottom of the condensation shell (303) are arranged in an alternating manner.

2. The aqueous solution polymerization equipment for preparing polyacrylamide according to claim 1, characterized in that: The top of the reaction tank (100) is fixedly connected to a hydraulic cylinder (201b) on all four sides, and the piston shafts of the hydraulic cylinder (201b) are respectively fixedly connected to the lower surface of the lifting plate (201) on all four sides.

3. The aqueous solution polymerization equipment for preparing polyacrylamide according to claim 2, characterized in that: A driving motor (101) is fixedly connected to the center of the top of the reaction tank (100), and the output shaft of the driving motor (101) rotates through the top of the reaction tank (100) and is fixedly connected to a rotating shaft (102) via a coupling, and a plurality of groups of stirring blades (103) are sleeved on the outer side of the rotating shaft (102).

4. The aqueous solution polymerization equipment for preparing polyacrylamide according to claim 1, characterized in that: Both ends of the heat exchange tube 1 (204) are fixedly connected to a telescopic hose (204a), and one end of the telescopic hose (204a) away from the heat exchange tube 1 (204) passes through the top of the reaction tank (100) and extends to the top of the reaction tank (100).

5. The aqueous solution polymerization equipment for preparing polyacrylamide according to claim 1, characterized in that: The bottom of the reaction tank (100) is fixedly connected to a discharge pipe (104), and the end of the discharge pipe (104) away from the reaction tank (100) is fixedly connected to a connecting pipe 1 (301a) through a discharge valve (105), and the end of the connecting pipe 1 (301a) away from the discharge valve (105) is fixedly connected to the rear end surface of the condensation shell (303), and the front end surface of the condensation shell (303) is fixedly connected to a connecting pipe 2 (301b).

6. The aqueous solution polymerization equipment for preparing polyacrylamide according to claim 1, characterized in that: The two ends of the second heat exchange tube (302) respectively penetrate the two sides of the bottom of the discharge shell (301) and are respectively fixedly connected with an air inlet pipe (302a) and an air outlet pipe (302b), and the air inlet pipe (302a) and the air outlet pipe (302b) are respectively located on the two sides below the discharge shell (301).

7. The aqueous solution polymerization equipment for preparing polyacrylamide according to claim 1, characterized in that: The front end surface of the condensation shell (303) is fixedly connected to a connecting pipe three (303a), and one end of the connecting pipe three (303a) away from the condensation shell (303) is fixedly connected to the top front end of the discharge shell (301), and the rear end surface of the condensation shell (303) is fixedly connected to an exhaust pipe (303b).

8. The aqueous solution polymerization equipment for preparing polyacrylamide according to claim 1, characterized in that: A U-shaped cavity (304a) is provided on the inner side of the condensation plate (304), and the water inlet and the water outlet of the U-shaped cavity (304a) are respectively fixedly connected to a water inlet pipe (304b) and a water outlet pipe (304c), and the ends of the water inlet pipe (304b) and the water outlet pipe (304c) away from the condensation plate (304) respectively penetrate the upper and lower parts of the outer wall of one side of the condensation shell (303) and are respectively fixedly connected to a water distributor (305) and a water combiner (306), and the ends of the water distributor (305) and the water combiner (306) away from the condensation shell (303) are both fixedly connected to a connecting pipe four (305a).

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