Polymerization vessel, polymerization apparatus, and polymerization method

Abstract

The application discloses a polymerization container, a polymerization device and a polymerization method thereof, and belongs to the field of colloidal polymerization. The polymerization container comprises a fixed wall chain belt and a rubber block chain belt. The fixed wall chain belt is formed by surrounding a plurality of fixed wall chain links or fixed wall chain rings with consistent specifications. The fixed wall chain link is composed of at least two fixed walls in parallel. The fixed wall is a cylindrical structure with open ends. The rubber block chain belt is arranged on the lower surface of the fixed wall chain belt and is sealed and embedded with the lower end surface of the fixed wall chain belt in a separable connection mode. The rubber block chain belt comprises a rigid conveying belt and a plurality of rubber blocks distributed on the outer surface of the rigid conveying belt and embedded in the lower end surface of the fixed wall. The reaction product rubber block obtained by using the polymerization container is a small rubber block with a fixed size, so that the cutting process can be omitted, and even the granulation process can be omitted.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of colloidal polymerization, in particular to a polymerization reactor, a polymerization device and a polymerization method thereof. BACKGROUND

[0002] Commercially available powder or granular water-soluble polymers, such as homopolymers and copolymers of acrylic acid (salt), homopolymers and copolymers of acrylamide, homopolymers and copolymers of dimethyldiallylammonium chloride, homopolymers and copolymers of acryloyloxyethyltrimethylammonium chloride, etc., are all prepared by free radical initiation polymerization; the mainstream production process includes the steps of batching, initiation polymerization, block cutting, granulation, drying and grinding and screening, etc. Such polymerization reactions are carried out in aqueous solution, and after initiation by free radical initiators, the monomer aqueous solution material at a certain concentration and temperature rapidly polymerizes and releases a large amount of reaction heat, causing the system temperature to rapidly rise; the reaction product obtained by the above polymerization reaction is generally a condensed state block that cannot flow, has considerable strength, but can be deformed under pressure, and the latter can be cut and granulated by extrusion cutting or rotary blade cutting.

[0003] In order to realize the smooth removal of the block from the polymerization reactor, the prior art uses a reaction kettle with a large opening for discharging or carries out the above polymerization reaction in a semi-open rubber belt or metal tray. When the above polymerization reaction is carried out in a large opening discharge reaction kettle, in order to ensure that the reaction kettle does not overheat, and at the same time the product block can be extruded out of the reaction kettle under pressure, the configuration concentration of the material cannot be too high; this limits the production capacity of the equipment and increases the energy consumption of subsequent drying. When the above polymerization reaction is carried out in a rubber belt or a metal tray, although there is no need to worry about overheating, if the concentration of the material is high, the strength of the product block obtained will be too great, which will make the cutting processing of the block very difficult. SUMMARY

[0004] In order to overcome the above technical defects, the present application provides a polymerization reactor, a polymerization device and a polymerization method thereof to solve the problems involved in the background art.

[0005] The present application provides a polymerization reactor, comprising:

[0006] A fixed wall chain belt formed by a plurality of fixed wall chain links or fixed wall chain rings of the same specification; the fixed wall chain link is composed of at least two fixed walls arranged side by side; the fixed wall is a cylindrical structure with open ends;

[0007] A rubber block chain belt arranged on the lower surface of the fixed wall chain belt, and the lower end surface of the fixed wall chain belt is sealed and embedded in a separable manner; the rubber block chain belt comprises a rigid transmission belt, and a plurality of rubber blocks distributed on the outer surface of the rigid transmission belt and embedded in the lower end surface of the fixed wall;

[0008] When the rubber block chain belt is embedded in the lower end surface of the fixed wall chain belt, a plurality of upper opening polymerization reaction containers are formed.

[0009] Preferably or alternatively, the groove volume of the polymerization reaction container is 1-3000 ml.

[0010] Preferably or alternatively, the rubber block is in the shape of a trapezoidal structure.

[0011] The application also provides a polymerization device, wherein the reactant is a monomer aqueous solution, and the product is a condensed polymerization rubber block; the polymerization device comprises:

[0012] a rack;

[0013] a polymerization reaction container main belt, comprising a front roller and a rear roller mounted on the rack, a driving motor in transmission connection with the front roller or / and the rear roller, and a fixed wall chain belt sleeved on the front roller and the rear roller; the fixed wall chain belt is formed by surrounding a plurality of fixed wall chain links or fixed wall link rings of uniform specifications; the fixed wall chain link is composed of at least two fixed walls arranged side by side; the fixed wall is in the shape of an open-ended cylinder;

[0014] a polymerization reaction container auxiliary belt, two auxiliary rollers arranged on the lower surface of the fixed wall chain belt and located between the front roller and the rear roller, and a rubber block chain belt sleeved on the two auxiliary rollers and in close connection with the lower surface of the fixed wall chain belt; the rubber block chain belt comprises a rigid transmission belt sleeved between the two auxiliary rollers, and a plurality of rubber blocks distributed on the outer surface of the rigid transmission belt and capable of being embedded in the lower end surface of the fixed wall;

[0015] The driving motor drives the front roller or / and the rear roller to rotate, and the front roller or / and the rear roller drives the fixed wall chain belt or the chain on the fixed wall chain belt to rotate, so as to drive the fixed wall chain belt to perform a surrounding movement; at the same time, the rubber blocks are embedded in the bottom of the fixed wall to form polymerization reaction containers, and the rubber block chain belt is forced to move synchronously.

[0016] Preferably or alternatively, the groove volume of the polymerization reaction container is 1-3000 ml.

[0017] Preferably or alternatively, the rubber block is in the shape of a trapezoidal structure.

[0018] Preferably or alternatively, a plurality of supporting rollers are arranged between the two auxiliary rollers to ensure that the rubber block chain belt is embedded in the lower end surface of the fixed wall chain belt.

[0019] Preferably or alternatively, the fixed wall chain belt is sequentially divided into a feeding section, an initiation reaction section, a heat preservation section, a discharging section and a cleaning section along the circumferential direction of the fixed wall chain belt.

[0020] The feeding section, the initiating reaction section and the heat preservation section are located in the mutual adhering area of the fixed wall chain belt and the rubber block chain belt.

[0021] Preferably or optionally, a reaction initiator injection device is arranged above the feeding section and is suitable for injecting reaction initiators into the polymerization reaction container.

[0022] A discharging device is arranged in the discharging section, which includes a top rod mechanism arranged above the fixed wall chain belt and suitable for pushing the product to move downward along the inner wall of the fixed wall, and a conveying device arranged below the fixed wall chain belt.

[0023] A cleaning device is arranged in the cleaning section.

[0024] Preferably or optionally, the initiating reaction section and the heat preservation section are provided with heat preservation covers.

[0025] The application also provides a polymerization method based on the polymerization device, which comprises the following steps:

[0026] arranging a belt type polymerization device; in the feeding section, the initiating reaction section and the heat preservation section, the rubber block chain belt is embedded in the lower end surface of the fixed wall chain belt to form a plurality of polymerization reaction containers with upper openings;

[0027] In the feeding section, reaction initiators are injected into the polymerization reaction containers.

[0028] In the initiating reaction section, the product is shaped in the polymerization reaction containers under the action of initiators.

[0029] In the heat preservation section, the polymerization reaction continues until it is completed.

[0030] In the discharging section, the condensed polymerization rubber blocks adhering to the inner wall of the fixed wall are pushed out of the polymerization reaction containers by mechanical force and the top rod mechanism, and then fall onto the conveying belt.

[0031] In the cleaning section, the inside of the polymerization reaction container is cleaned.

[0032] The application relates to a polymerization reaction container, a polymerization device and a polymerization method thereof, and has the following beneficial effects compared with the prior art:

[0033] 1. The polymerization reaction container in the application adopts a plurality of fixed wall chains to form a chain belt, a rubber block chain belt is arranged on the lower surface of the fixed wall chain belt, the lower end surface of the fixed wall chain belt is sealed and embedded in a separable connection mode, a plurality of polymerization reaction containers with upper openings are formed, and the reaction product rubber blocks obtained by using the polymerization reaction container are small rubber blocks with a fixed size, so that the cutting process can be omitted, and even the granulation process can be omitted.

[0034] 2、The polymerization device in the application drives the front roller or / and the rear roller to rotate through the driving motor, the front roller or / and the rear roller drives the fixed wall chain belt to rotate, so as to drive the fixed wall chain belt to present a circular motion; at the same time, the rubber block is embedded in the bottom of the fixed wall to form a polymerization reaction container, and the rubber block chain belt is forced to move synchronously, so as to realize the automatic connection and separation of the fixed wall chain belt and the rubber block chain belt, and facilitate the injection of the reaction starting material and the discharge of the condensed polymer block.

[0035] 3、The polymerization method in the application is based on the polymerization device, realizes the automatic feeding section, the initiation reaction, the polymerization, the unloading and the cleaning, and realizes the continuous production of the polymerization reaction.

[0036] In summary, the polymerization device in the application is particularly suitable for the polymerization device with free radical initiation, high material concentration, large polymerization heat and high strength of the rubber block, the polymerization device in the application can save a large amount of power for cutting and / or granulating of the rubber block and heat for drying for the polymer production plant, and is very meaningful for the energy saving and carbon reduction industry. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic diagram of the polymerization device in the application.

[0038] Figure 2 is a side schematic diagram of the polymerization device in the application.

[0039] Figure 3 is a structural schematic diagram of the fixed wall chain link in the application.

[0040] Figure 4 is a structural schematic diagram of the fixed wall chain belt in the application.

[0041] Figure 5 is a structural schematic diagram of the polymerization reaction container auxiliary belt in the application.

[0042] The drawings are as follows:

[0043] 100, rack;

[0044] 200, polymerization reaction container main belt; 210, front roller; 220, rear roller; 230, driving motor; 240, fixed wall chain belt; 241, fixed wall chain link; 242, chain; 2411, fixed wall;

[0045] 300, polymerization reaction container auxiliary belt; 310, auxiliary roller; 320, idler; 330, rubber block chain belt; 331, rigid transmission belt; 332, rubber block;

[0046] 410, loading section; 420, initiation reaction section; 430, heat preservation section; 440, unloading section; 441, ejector rod mechanism; 442, conveying device; 450, cleaning section; 451, cleaning device. DETAILED DESCRIPTION

[0047] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail to avoid obscuring the present application.

[0048] Reference will now be made to the drawings Figures 1 to 5 A polymerization device comprises a frame 100, a main polymerization reactor belt 200, and a secondary polymerization reactor belt 300.

[0049] Reference will now be made to the drawings Figure 1 The main polymerization reactor belt 200 comprises front rollers 210 and rear rollers 220 installed on the frame 100, a driving motor 230 connected to the front rollers 210 and / or the rear rollers 220, and a fixed wall chain belt 240 sleeved on the front rollers 210 and the rear rollers 220. Figure 3 Figure 4 The fixed wall chain belt 240 is formed by linking a plurality of fixed wall chain links 241 or fixed walls 2411 around a circle; the fixed wall chain link 241 is composed of at least two fixed walls 2411 arranged side by side; the fixed wall 2411 is a cylindrical structure with open ends. The driving motor 230 drives the front rollers 210 and / or the rear rollers 220 to rotate, and the front rollers 210 and / or the rear rollers 220 drive the fixed wall chain belt 240 or the chain 242 on the fixed wall chain belt 240 to rotate, thereby driving the fixed wall chain belt 240 to move in a circular motion.

[0050] Reference will now be made to the drawings Figure 5 The secondary polymerization reactor belt 300 is arranged on the lower surface of the fixed wall chain belt 240 between the front rollers 210 and the rear rollers 220, two secondary rollers 310, a rubber block chain belt 330 sleeved on the two secondary rollers 310 and capable of being tightly connected to the lower surface of the fixed wall chain belt 240; the rubber block chain belt 330 comprises a rigid conveying belt 331 sleeved between the two secondary rollers 310, and a plurality of rubber blocks 332 distributed on the outer surface of the rigid conveying belt 331 and capable of being embedded in the lower end surface of the fixed wall 2411. While the fixed wall chain belt 240 moves in a circular motion, the rubber blocks 332 are embedded in the bottom of the fixed wall 2411 to form a polymerization reactor, and force the rubber block chain belt 330 to move synchronously.

[0051] ​In further embodiments, the trough volume of the polymerization reactor is 1-3000 ml, preferably 15-1500 ml, and more preferably 100-1000 ml. Controlling the size of the polymer chunks allows to omit the chunking process and even the granulation process.

[0052] In further embodiments, the material of the fixing wall 2411 is metal, ceramic, hard plastic, rubber, or glass fiber reinforced plastic. Preferably, the material is metal or hard plastic. The rubber block 332 is embedded in the lower end surface of the fixing wall 2411 as a bottom plate. The rubber block 332 is shaped as a trapezoidal structure to facilitate the embedding of the rubber block 332 in the fixing wall 2411 and to ensure the sealing between the rubber block 332 and the fixing wall 2411.

[0053] In further embodiments, a plurality of supporting rollers 320 are arranged between the two sub-rollers 310 to ensure the embedding of the rubber block chain 330 in the lower end surface of the fixing wall chain 240 and to improve the sealing between the rubber block 332 and the fixing wall 2411.

[0054] Referring to the drawings Figure 2 The fixing wall chain 240 is divided into a feeding section 410, an initiating reaction section 420, a heat preservation section 430, a discharging section 440, and a cleaning section 450 along the circumferential direction of the fixing wall chain 240. The feeding section 410, the initiating reaction section 420, and the heat preservation section 430 are located in the mutual adhering area of the fixing wall chain 240 and the rubber block chain 330. The discharging section 440 and the cleaning section 450 are located in the non-adhering area. In this embodiment, the discharging section 440 is located in the upper part of the fixing wall chain 240 (the forward moving part of the fixing wall chain 240 from the rear roller 220 to the front roller 210), and the cleaning section 450 is located in the lower part of the fixing wall chain 240 (the rotating part of the fixing wall chain 240 from the front roller 210 to the rear roller 220). Of course, the skilled in the art can adjust the positions of the discharging section 440 and the cleaning section 450 according to the needs, which can be located in the upper part or the lower part of the fixing wall chain 240, or even across the upper part and the lower part of the fixing wall chain 240. Therefore, the positions of the discharging section 440 and the cleaning section 450 are not limited here.

[0055] A reaction initiator injection device is arranged above the feeding section 410, which is suitable for injecting reaction initiators into the polymerization reactor, wherein the reaction initiators include reaction monomers and initiators; in the initiation reaction section 420, the reaction monomers react violently under the action of the initiators, and the products are formed in the polymerization reactor; the unloading device is arranged in the unloading section 440, which includes a top rod mechanism 441 arranged above the fixed wall chain belt 240 and suitable for pushing the products to move downward along the inner wall of the fixed wall 2411, and a conveying device 442 arranged below the fixed wall chain belt 240, which pushes out the condensed polymer blocks adhered to the wall of the polymerization reactor by mechanical force and the top rod device, and the condensed polymer blocks fall onto the conveying belt; the cleaning device 451 is arranged in the cleaning section 450. In addition, a heat preservation cover is installed in the initiation reaction section 420 and the heat preservation section 430 to improve the reaction progress of the polymerization reaction.

[0056] In order to facilitate the understanding of the technical scheme of the polymerization device, the polymerization method is briefly described as follows: configuring the polymerization device; in the feeding section 410, the initiation reaction section 420 and the heat preservation section 430, the rubber block chain belt 330 is embedded in the lower end surface of the fixed wall chain belt 240 to form a plurality of polymerization reactors with open upper portions; in the feeding section 410, reaction initiators are injected into the polymerization reactors; in the initiation reaction section 420, the reaction monomers react violently under the action of the initiators, and the products are formed in the polymerization reactors; in the heat preservation section 430, the polymerization reaction continues until it is completed; in the unloading section 440, the condensed polymer blocks adhered to the inner wall of the fixed wall 2411 are pushed out of the polymerization reactor by mechanical force and the top rod mechanism 441, and the condensed polymer blocks fall onto the conveying belt; in the cleaning section 450, the inside of the polymerization reactor is cleaned by flushing. After the cleaning of the polymerization reactor is completed, the next cycle of reaction production is prepared.

[0057] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present application.

Claims

1. A polymerization apparatus characterized by, The reactant of the polymerization device is a monomer aqueous solution, and the product is a condensed polymerization block; the polymerization device comprises: a rack; a polymerization reaction container main belt, comprising a front roller and a rear roller mounted on the rack, a driving motor in transmission connection with the front roller or / and the rear roller, and a fixed wall chain belt sleeved on the front roller and the rear roller; the fixed wall chain belt is formed by surrounding a plurality of fixed wall chain links of the same specification; the fixed wall chain link is composed of at least two fixed walls arranged side by side; the fixed wall is a cylindrical structure with both ends open; a polymerization reaction container auxiliary belt, comprising two auxiliary rollers arranged on the lower surface of the fixed wall chain belt between the front roller and the rear roller, a rubber block chain belt sleeved on the two auxiliary rollers and in close connection with the lower surface of the fixed wall chain belt; the rubber block chain belt comprises a rigid transmission belt sleeved between the two auxiliary rollers, and a plurality of rubber blocks distributed on the outer surface of the rigid transmission belt and capable of being embedded in the lower end surface of the fixed wall; the driving motor drives the front roller or / and the rear roller to rotate, and the front roller or / and the rear roller drives the fixed wall chain belt or the chain on the fixed wall chain belt to rotate, thereby driving the fixed wall chain belt to move in a surrounding manner; at the same time, the rubber blocks are embedded in the bottom of the fixed wall to form a polymerization reaction container, and the rubber block chain belt is forced to move synchronously; the fixed wall chain belt is sequentially divided into a feeding section, an initiation reaction section, a heat preservation section, a discharging section and a cleaning section along the circumferential direction of the fixed wall chain belt; the feeding section, the initiation reaction section and the heat preservation section are located in the mutual adhesion area of the fixed wall chain belt and the rubber block chain belt; a discharging device is arranged in the discharging section, and the discharging device comprises a top rod mechanism arranged above the fixed wall chain belt and adapted to push the product to move downward along the inner wall of the fixed wall, and a transmission device arranged below the fixed wall chain belt.

2. The polymerization apparatus of claim 1, wherein The volume of a single polymerization reaction container is 1-3000 ml.

3. The polymerization apparatus of claim 1, wherein The rubber block is in the shape of a trapezoidal structure.

4. The polymerization apparatus of claim 1, wherein A plurality of supporting rollers are further arranged between the two auxiliary rollers to ensure that the rubber block chain belt is embedded in the lower end surface of the fixed wall chain belt and forms a closure.

5. The polymerization apparatus of claim 1, wherein A reaction initiator injection device is arranged above the feeding section and is adapted to inject a reaction initiator into the polymerization reaction container.

6. The polymerization apparatus of claim 1, wherein A cleaning device is arranged in the cleaning section.

7. The polymerization apparatus of claim 1, wherein The initiation reaction section and the heat preservation section are provided with heat preservation covers.

8. A polymerization process based on the polymerization apparatus according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: configuring a polymerization device: in the feeding section, the initiation reaction section and the heat preservation section, the rubber block chain belt is embedded in the lower end surface of the fixed wall chain belt to form a plurality of polymerization reaction containers with upper openings; in the feeding section, a reaction initiator is injected into the polymerization reaction container; in the initiation reaction section, the product is shaped in the polymerization reaction container under the action of an initiator; in the heat preservation section, the polymerization reaction continues until it is fully completed; in the discharging section, the condensed polymerization block adhering to the inner wall of the fixed wall is pushed out of the polymerization reaction container by mechanical force and the top rod mechanism, and the condensed polymerization block falls onto the transmission belt; in the cleaning section, the inside of the polymerization reaction container is flushed and cleaned.

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