Hydrophilic resin solid-liquid continuous reaction tower

Abstract

The utility model provides a hydrophilic resin solid-liquid continuous reaction tower, and belongs to the technical field of hydrophilic resin preparation. Aiming at the problem of relatively low post-treatment efficiency of hydrophilic resin, the utility model provides a hydrophilic resin solid-liquid continuous reaction tower which comprises a feeding unit, a mixing unit, a reaction unit, a cooling unit and a discharging unit which are sequentially arranged from top to bottom, the mixing unit comprises a plurality of mixing tanks which are sequentially arranged in the height direction and are sequentially communicated, and each mixing tank is connected with a liquid tank; the reaction unit comprises a plurality of reaction tanks which are sequentially arranged in the height direction and are sequentially communicated; and the plurality of mixing tanks, the plurality of reaction tanks, the cooling tank and the discharging unit are communicated with one another through screw feeders. According to the hydrophilic resin post-treatment device, through the multiple mixing tanks and the multiple reaction tanks which are arranged in the height direction, refining control over different stages of the post-treatment process is achieved, so that continuous and uninterrupted hydrophilic resin post-treatment is achieved, efficiency is improved, and cost is controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrophilic resin preparation, and particularly relates to a hydrophilic resin solid-liquid continuous reaction tower. BACKGROUND

[0002] The hydrophilic resin is a new type of functional polymer material, which can absorb water of several hundred times or even several thousand times of its own mass, and has good water retention capacity. Under pressure, the hydrophilic resin does not dehydrate or has little dehydration. After drying, the hydrophilic resin still has water absorption capacity and can be used multiple times. In addition, the hydrophilic resin has a three-dimensional space network structure, is insoluble in water and organic solvents, can absorb ammonia, urine, blood and organic drugs, and has good fertilizer and drug slow-release performance. Therefore, the hydrophilic resin has been widely used in agriculture, forestry, gardening, physiology, health, food, civil construction, daily chemical industry, health care, desert reclamation and coal mine fire prevention. The hydrophilic resin can be classified into starch, fiber and synthetic polymer according to the source of raw materials.

[0003] At present, the synthetic polymer is used as the raw material of the hydrophilic resin. After the polymerization reaction and granulation into preset particle size, the synthetic polymer needs to be post-processed, that is, solid-liquid reaction. Specifically, a crosslinking agent is sprayed, and then solid-liquid reaction is performed at a certain temperature. Finally, the product is obtained after drying to a certain dryness and cooling. However, the current solid-liquid reaction system of the hydrophilic resin is composed of multiple independent devices, and multiple devices are horizontally arranged. In order to control the floor area, different stages of the post-processing process, such as mixing and reaction, are usually processed by a single device at one time. This leads to a relatively violent reaction, which needs to be processed by batches, and cannot be continuously processed, so the efficiency is low. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to solve the problem of low efficiency of post-processing of the hydrophilic resin in the prior art. Therefore, the present application provides a hydrophilic resin solid-liquid continuous reaction tower, which realizes the detailed control of different stages of the post-processing process while controlling the floor area by arranging multiple mixing tanks and multiple reaction tanks in the height direction. Therefore, the continuous and uninterrupted post-processing of the hydrophilic resin is realized, the efficiency is improved, and the cost is controlled.

[0005] The present application provides a hydrophilic resin solid-liquid continuous reaction tower for processing polymer materials and crosslinking agents to generate a hydrophilic resin, which comprises an feeding unit, a mixing unit, a reaction unit, a cooling unit and a discharging unit arranged in sequence from top to bottom.

[0006] The mixing unit comprises multiple mixing tanks arranged in sequence and communicated in sequence in the height direction, and the uppermost mixing tank is communicated with the feeding unit. Each mixing tank is connected with a liquid tank.

[0007] The reaction unit comprises a plurality of reaction tanks arranged in sequence along the height direction and in sequence communication, and the uppermost reaction tank is in communication with the lowermost mixing tank in the mixing unit;

[0008] The cooling unit comprises a cooling tank, the outside of the cooling tank is sleeved with a cooling jacket, the top of the cooling tank is in communication with the lowermost reaction tank in the reaction unit, and the bottom is in communication with the discharge unit; and,

[0009] The plurality of mixing tanks, the plurality of reaction tanks, the cooling tank and the discharge unit are in communication through a plurality of screw feeders, the inlets of the plurality of screw feeders are respectively in lateral communication with the bottom side edges of the corresponding mixing tanks, reaction tanks or cooling tanks, the outlets are in communication with the tops of the corresponding mixing tanks, reaction tanks or discharge units, and the upper and lower adjacent two screw feeders are alternately arranged on the two sides in the height direction.

[0010] By using the above technical scheme, multiple mixing and multiple reaction can be realized through the plurality of mixing tanks and the plurality of reaction tanks, so as to realize the refined control of different stages of the post-treatment of the hydrophilic resin, and then realize the continuous and uninterrupted post-treatment of the hydrophilic resin, thereby improving the efficiency; and the feeding unit, the mixing unit, the reaction unit, the cooling unit and the discharge unit are arranged in sequence from top to bottom, which not only can realize the effective control of the floor area of the entire post-treatment equipment through the layout in the height direction, thereby reducing the cost, but also can improve the flowability of the raw materials by using gravity, thereby improving the reliability of the entire process flow; at the same time, the material flow between different tanks can be realized through the horizontally arranged screw feeders, so as to ensure the accurate control of the feeding and discharging.

[0011] In some embodiments, the mixing tank has a first feeding port in communication with the feeding unit or the adjacent mixing tank;

[0012] The reaction tank has a second feeding port in communication with the mixing tank or the adjacent reaction tank;

[0013] The first feeding port and the second feeding port are arranged away from the inlet of the screw feeder.

[0014] By using the above technical scheme, the polymer material feeding port and the discharge port of the mixing tank and the reaction tank are arranged away from each other, so as to avoid that the polymer material falls into the tank and is too close to the discharge port, thereby being output without being fully contacted with the cross-linking agent. By ensuring the full contact and reaction between the polymer material and the cross-linking agent, the quality of the generated hydrophilic resin can be ensured.

[0015] In some embodiments, the reaction units other than the lowermost reaction tank are connected with a drying unit, the drying unit comprising a collection tank and a first condenser connected between the corresponding reaction tank and the collection tank;

[0016] The lowermost reaction tank is connected with a recovery unit for recovering volatile solvent, the recovery unit comprising a recovery tank and a second condenser connected between the corresponding reaction tank and the recovery tank, and the recovery tank is connected with a vacuum pump to realize vacuum desolventization recovery.

[0017] By the recovery unit connected with the lowermost reaction tank, i.e. the last reaction tank, the above technical solution realizes vacuum desolventization after reaction and solvent recovery, thereby reducing the cost.

[0018] In some embodiments, the mixing tank is provided with a liquid spraying mechanism and a first stirring mechanism;

[0019] The liquid spraying mechanism is arranged at the top of the mixing tank and communicates with the liquid tank through a liquid conveying rod, the liquid conveying rod is rotatable and enables the liquid spraying mechanism to move in the mixing tank.

[0020] The first stirring mechanism is arranged at the bottom of the mixing tank.

[0021] In some embodiments, the bottom of the reaction tank is provided with a second stirring mechanism, the outside of the reaction tank is sleeved with a temperature control jacket, and the temperature control jacket is connected with an oil temperature machine.

[0022] The oil outlet of the oil temperature machine communicates with the bottom end of the temperature control jacket, and the backflow port communicates with the top end of the temperature control jacket.

[0023] In some embodiments, the outlet of the spiral feeder is vertically connected with a discharge pipe, and the discharge pipe communicates with the top of the corresponding mixing tank, reaction tank or discharge unit.

[0024] In some embodiments, the inlet of the cooling jacket is arranged close to the bottom end of the cooling tank, and the outlet is arranged close to the top end of the cooling tank.

[0025] In some embodiments, the liquid tank is connected with a weighing instrument and communicates with the mixing tank through a metering pump.

[0026] The reaction tank and the cooling tank are each provided with a temperature sensor close to the bottom thereof.

[0027] In some embodiments, the plurality of mixing tanks are provided with three, and the plurality of reaction tanks are provided with two. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structure diagram of a hydrophilic resin solid-liquid continuous reaction tower provided by an embodiment of the present application is shown.

[0029] Explanation of reference numerals:

[0030] 1. A feeding unit;

[0031] 2. A mixing unit; 21, a mixing tank; 22, a liquid tank; 23, a liquid spraying mechanism; 24, a liquid conveying rod; 25, a first stirring mechanism; 26, a weighing instrument; 27, a metering pump;

[0032] 3. A reaction unit; 31, a reaction tank; 32, a second stirring mechanism; 33, a temperature control jacket; 34, a temperature sensor;

[0033] 4. A cooling unit; 41, a cooling tank; 42, a cooling jacket;

[0034] 5. A discharging unit;

[0035] 6. A drying unit; 61, a collection tank; 62, a first condenser;

[0036] 7. A recovery unit; 71, a recovery tank; 72, a second condenser;

[0037] 8. A screw feeder; 81, a discharging pipe. DETAILED DESCRIPTION

[0038] The present application will be described by way of specific embodiments, and those skilled in the art will easily understand other advantages and effects of the present application from the content disclosed in the specification. Although the description of the present application will be introduced in combination with preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0039] It should be noted that in the present specification, similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] The technical solutions of the present application will be described clearly and completely in the description below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be described in further detail below in conjunction with the drawings.

[0044] Please refer to Figure 1 , Figure 1 The structure schematic diagram of the hydrophilic resin solid-liquid continuous reaction tower provided by the embodiments of the present application.

[0045] The embodiments of the present application provide a hydrophilic resin solid-liquid continuous reaction tower for treating polymer materials and crosslinking agents to generate hydrophilic resin.

[0046] It should be noted that the process is generally referred to as a post-processing process of hydrophilic resin, specifically: after the polymerization reaction liquid for producing hydrophilic resin is polymerized into a gel solid and granulated into a preset particle size, the crosslinking agent is sprayed, then the solid-liquid reaction is carried out at a certain temperature, and finally the product hydrophilic resin is obtained after drying to a certain dryness and cooling.

[0047] The reaction tower comprises a feeding unit 1, a mixing unit 2, a reaction unit 3, a cooling unit 4 and a discharging unit 5 arranged in sequence from top to bottom, can realize the whole process of post-treatment of the hydrophilic resin, and through the layout in the height direction, the land occupation of the whole post-treatment equipment can be effectively controlled, the cost is reduced, and the flowability of the raw material, especially the flowability of the polymer material, can be improved by gravity, thereby the reliability of the whole process is improved.

[0048] In one embodiment, the mixing unit 2 comprises a plurality of mixing tanks 21 arranged in sequence in the height direction and communicated in sequence, and the uppermost mixing tank 21 is communicated with the feeding unit 1, and each mixing tank 21 is connected with a liquid tank 22, and through the plurality of mixing tanks 21, multiple mixing can be realized, thereby the mixing stage of the post-treatment of the hydrophilic resin can be controlled in detail, the violent reaction can be avoided, and the post-treatment of the hydrophilic resin can be continuously and uninterruptedly carried out, thereby the efficiency is improved.

[0049] In some embodiments, the mixing tank 21 is provided with a liquid spraying mechanism 23, and the liquid spraying mechanism 23 is communicated with the liquid tank 22.

[0050] The liquid spraying mechanism 23 is arranged at the top of the mixing tank 21 and communicated with the liquid tank 22 through a liquid conveying rod 24, the liquid conveying rod 24 is rotatable and enables the liquid spraying mechanism 23 to move in the mixing tank 21.

[0051] In one embodiment, the mixing tank 21 is provided with a first stirring mechanism 25. The first stirring mechanism 25 is arranged at the bottom of the mixing tank 21, thereby improving the mixing uniformity and efficiency.

[0052] In one specific embodiment, the plurality of mixing tanks 21 are three, i.e. a first-stage mixing tank 21, a second-stage mixing tank 21 and a third-stage mixing tank 21 connected in sequence from top to bottom, and correspondingly connected with a first liquid tank 22, a second liquid tank 22 and a third liquid tank 22 respectively.

[0053] In one embodiment, the reaction unit 3 comprises a plurality of reaction tanks 31 arranged in sequence in the height direction and communicated in sequence, and the uppermost reaction tank 31 is communicated with the lowermost mixing tank 21 in the mixing unit 2, and through the plurality of reaction tanks 31, multiple reactions can be realized, thereby the reaction stage of the post-treatment of the hydrophilic resin can be controlled in detail, the violent reaction can be avoided, and the post-treatment of the hydrophilic resin can be continuously and uninterruptedly carried out, thereby the efficiency is improved.

[0054] In one embodiment, the reaction unit 3 is connected with a drying unit 6 except for the lowermost reaction tank 31, and the drying unit 6 comprises a collection tank 61 and a first condenser 62, and the first condenser 62 is connected between the corresponding reaction tank 31 and the collection tank 61.

[0055] In one embodiment, the lowermost reaction tank 31, i.e. the last reaction tank 31, is connected with a recovery unit 7 for recovering the volatile solvent, thereby reducing the cost.

[0056] The recovery unit 7 comprises a recovery tank 71 and a second condenser 72 connected between the corresponding reaction tank 31 and the recovery tank 71, and the recovery tank 71 is connected with a vacuum pump to realize the vacuum desolventization recovery.

[0057] In some embodiments, the bottom of the reaction tank 31 is provided with a second stirring mechanism 32, thereby improving the reaction uniformity and efficiency.

[0058] In one embodiment, the reaction tank 31 is sleeved with a temperature control jacket 33 outside, and the temperature control jacket 33 is connected with an oil temperature machine. The oil outlet of the oil temperature machine is in communication with the bottom end of the temperature control jacket 33, and the backflow port is in communication with the top end of the temperature control jacket 33, thereby realizing efficient temperature control of the main reaction area, i.e. the lower part of the reaction tank 31, and improving the reaction efficiency.

[0059] In one specific embodiment, a plurality of reaction tanks 31 are provided with two, i.e. a first reaction tank 31 and a second reaction tank 31, and are respectively connected with a first oil temperature machine and a second oil temperature machine.

[0060] In one embodiment, the cooling unit 4 comprises a cooling tank 41, and the cooling tank 41 is sleeved with a cooling jacket 42 outside, and the top of the cooling tank 41 is in communication with the lowermost reaction tank 31 in the reaction unit 3, and the bottom is in communication with the discharge unit 5, which is simple in structure and effective in cooling. Preferably, the cooling jacket 42 is cooled by cooling water, which can meet the temperature control requirement and control the cost.

[0061] In one embodiment, the inlet of the cooling jacket 42 is arranged close to the bottom end of the cooling tank 41, and the outlet is arranged close to the top end of the cooling pipe, thereby ensuring the cooling efficiency.

[0062] In one embodiment, the liquid tank 22 is connected with a weighing instrument 26, and is in communication with the mixing tank 21 through a metering pump 27, so as to control the input quantity. The reaction tank 31 and the cooling tank 41 are both provided with a temperature sensor 34 close to the bottom thereof, so as to obtain a more accurate material temperature.

[0063] In one embodiment, the plurality of mixing tanks 21, the plurality of reaction tanks 31, the cooling tank 41 and the discharge unit 5 are all in communication through the screw feeder 8, so as to accurately control the feeding and discharging rate.

[0064] In one embodiment, the inlets of the plurality of screw feeders 8 are respectively connected to the bottom side of the corresponding mixing tank 21, reaction tank 31 or cooling tank 41, the outlets are connected to the top of the corresponding mixing tank 21, reaction tank 31 or discharge unit 5, and two adjacent screw feeders 8 in the vertical direction are arranged on the two sides of the height direction alternately, so that the plurality of mixing tanks 21, the plurality of reaction tanks 31, the cooling tank 41 and the discharge unit 5 can be arranged along a vertical line in the height direction, the occupied space is controlled, and the cost is reduced.

[0065] In one embodiment, the outlet of the screw feeder 8 is vertically connected with a discharge pipe 81, and the discharge pipe 81 is connected to the top of the corresponding mixing tank 21, reaction tank 31 or discharge unit 5, so as to facilitate the connection of each tank body.

[0066] In some embodiments, the mixing tank 21 has a first feed port connected to the feed unit 1 or the adjacent mixing tank 21. The reaction tank 31 has a second feed port connected to the mixing tank 21 or the adjacent reaction tank 31, that is, the first feed port and the second feed port are used to feed the polymer materials in different stages.

[0067] The first feed port and the second feed port are both arranged away from the inlet of the screw feeder 8, so that the feed port and the discharge port of the polymer material in the mixing tank 21 and the reaction tank 31 are arranged away from each other, avoiding that the polymer material is too close to the discharge port after falling into the tank body, so that the polymer material is not fully contacted with the crosslinking agent and is discharged. By ensuring that the polymer material is fully contacted with the crosslinking agent and reacts, the quality of the generated hydrophilic resin is ensured.

[0068] In one embodiment, the feed unit 1 comprises a feed hopper, and the feed hopper is connected with a weighing instrument and is connected to the mixing unit 2 through a powder valve.

[0069] The discharge unit 5 comprises a bin, and the top of the bin is connected to the cooling unit 4.

[0070] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydrophilic resin solid-liquid continuous reaction column for treating a polymer material and a crosslinking agent to produce a hydrophilic resin, characterized by, The hydrophilic resin solid-liquid continuous reaction tower comprises a feeding unit, a mixing unit, a reaction unit, a cooling unit and a discharging unit arranged in sequence from top to bottom. The mixing unit comprises a plurality of mixing tanks arranged in sequence and communicated in sequence in the height direction, and the uppermost mixing tank is communicated with the feeding unit. The reaction unit comprises a plurality of reaction tanks arranged in sequence and communicated in sequence in the height direction, and the uppermost reaction tank is communicated with the lowermost mixing tank in the mixing unit. The cooling unit comprises a cooling tank, the outside of the cooling tank is sleeved with a cooling jacket, the top of the cooling tank is communicated with the lowermost reaction tank in the reaction unit, and the bottom is communicated with the discharging unit. The plurality of mixing tanks, the plurality of reaction tanks, the cooling tank and the discharging unit are communicated through a plurality of screw feeders, the inlets of the plurality of screw feeders are respectively communicated with the bottom side edges of the corresponding mixing tanks, reaction tanks or cooling tanks, the outlets are communicated with the tops of the corresponding mixing tanks, reaction tanks or discharging units, and the upper and lower adjacent two screw feeders are alternately arranged on the two sides in the height direction.

2. The hydrophilic resin solid-liquid continuous reaction column according to claim 1, characterized by, The mixing tank has a first feeding port communicated with the feeding unit or the adjacent mixing tank. The reaction tank has a second feeding port communicated with the mixing tank or the adjacent reaction tank. The first feeding port and the second feeding port are arranged away from the inlet of the screw feeder.

3. The hydrophilic resin solid-liquid continuous reaction tower according to claim 1, wherein The reaction unit is connected with a drying unit except for the lowermost reaction tank, the drying unit comprises a collection tank and a first condenser connected between the corresponding reaction tank and the collection tank. The lowermost reaction tank is connected with a recovery unit for recovering volatile solvent, the recovery unit comprises a recovery tank and a second condenser connected between the corresponding reaction tank and the recovery tank, and the recovery tank is connected with a vacuum pump to realize vacuum desolventization recovery.

4. The hydrophilic resin solid-liquid continuous reaction column according to claim 1, wherein The mixing tank is provided with a liquid spraying mechanism and a first stirring mechanism. The liquid spraying mechanism is arranged at the top of the mixing tank and communicated with the liquid tank through a liquid conveying rod, the liquid conveying rod is rotatable and enables the liquid spraying mechanism to move in the mixing tank. The first stirring mechanism is arranged at the bottom of the mixing tank.

5. The hydrophilic resin solid-liquid continuous reaction column according to claim 1, wherein The bottom of the reaction tank is provided with a second stirring mechanism, the outside of the reaction tank is sleeved with a temperature control jacket, and the temperature control jacket is connected with an oil temperature machine. The oil outlet of the oil temperature machine is communicated with the bottom end of the temperature control jacket, and the backflow port is communicated with the top end of the temperature control jacket.

6. The hydrophilic resin solid-liquid continuous reaction tower according to claim 1, wherein The outlet of the screw feeder is vertically connected with a discharging pipe communicated with the top of the corresponding mixing tank, reaction tank or discharging unit.

7. The hydrophilic resin solid-liquid continuous reaction column according to claim 1, wherein The inlet of the cooling jacket is arranged close to the bottom end of the cooling tank, and the outlet is arranged close to the top end of the cooling tank.

8. The hydrophilic resin solid-liquid continuous reaction column according to claim 1, wherein The liquid tank is connected with a weighing instrument and communicates with the mixing tank through a metering pump; The reaction tank and the cooling tank are both provided with temperature sensors near their bottoms.

9. The hydrophilic resin solid-liquid continuous reaction column according to claim 1, wherein The plurality of mixing tanks are provided with three, and the plurality of reaction tanks are provided with two.

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