Cooling control system for production of six-carbon polycarboxylate superplasticizer

Abstract

The utility model relates to the technical field of cooling control, in particular to a cooling control system for production of a six-carbon polycarboxylate superplasticizer, which comprises a reaction kettle, a stirring shaft extending into a kettle body is mounted on a kettle cover of the reaction kettle, a stirrer consists of a motor, the stirring shaft and a stirring paddle, the stirring shaft is of a hollow structure, and the stirring paddle is of a hollow structure. A hollow structure is arranged in the reaction kettle body, cooling liquid is injected into the hollow structure of the stirring shaft, an injection port communicated with the interior of the hollow structure is formed in the upper part of the stirring shaft, a sealing cover is mounted on the injection port, a cooling water interlayer is arranged on the outer wall of the kettle body of the reaction kettle body, and the cooling water interlayer is communicated with a cooling system and an air pressure sensor. The cooling control system disclosed by the utility model is beneficial to accurate cooling, ensures normal operation of the whole cooling system, and reduces potential safety hazards caused by rapid temperature rise due to large amount of heat release during synthesis of the six-carbon water reducing agent and the influence on product quality due to temperature gradient in the reaction kettle caused by defects of the cooling system.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature reduction control, in particular to a temperature reduction control system for the production of hexacarbon polycarboxylic acid water reducer. Background Art

[0002] With the continuous development of the polycarboxylic acid water-reducing agent industry, polyether monomers are also being updated. Hexacarbon water-reducing agent has a wider adaptability than tetracarbon and pentacarbon water-reducing agent, and the production time is also shorter. It is beneficial to improve the defects of tetracarbon and pentacarbon water-reducing agent, such as poor adaptability and unsatisfactory collapse protection effect, and it can also increase product output. Ethylene glycol monovinyl polyethylene glycol ether (EPEG), as a new type of hexacarbon polyether macromonomer, has higher reactivity than tetracarbon methyl allyl polyoxyethylene ether (HPEG) and pentacarbon macromonomer isopentanol polyoxyethylene ether (TPEG). During the synthesis of polycarboxylic acid water-reducing agent, the reaction temperature needs to be controlled so that the entire polymerization reaction process is carried out at a lower temperature to avoid excessively intense polymerization reaction causing a sharp increase in temperature, resulting in unsatisfactory performance of the synthetic product and safety hazards.

[0003] At present, most manufacturers still use normal temperature or heating reactors to synthesize polycarboxylate water reducers for polymerization reaction. This equipment can only heat up but not cool down. The synthesis of hexacarbon polycarboxylate water reducer requires controlling the reaction temperature. It is necessary to add a cooling system that can accurately control the temperature on the basis of the original reactor to ensure the normal progress of the polymerization reaction and ensure product production quality and production safety.

[0004] The existing cooling system generally only adds a layer outside the reactor to remove the polymerization heat through flowing water, which can only reduce the reaction heat close to the reactor. There is a temperature gradient in the reactor, which affects the performance and quality of the polymer. Moreover, the temperature control method of adding a cooling layer is single and cannot achieve accurate temperature control. Utility Model Content

[0005] The utility model aims to provide a cooling control system for the production of hexacarbon polycarboxylic acid water reducer, which is conducive to accurate cooling, while ensuring the normal operation of the entire cooling system, reducing the potential safety hazards caused by the rapid heating due to the large amount of heat released during the synthesis of the hexacarbon water reducer and the defects of the existing cooling system, resulting in the temperature gradient in the reactor affecting the product quality.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cooling control system for the production of hexacarbon polycarboxylic acid water-reducing agent, comprising a reactor 1, a feed inlet 101 is provided on the top cover of the reactor 1, a discharge port 102 is provided at the bottom of the reactor 1, a stirrer 3 extending into the interior of the reactor body is installed on the reactor cover of the reactor 1, the stirrer 3 is composed of a motor 301, a stirring shaft 302 and a stirring paddle 303, characterized in that: the stirring shaft 302 is a hollow structure, a coolant 4 is injected into the hollow structure of the stirring shaft 302, an injection port 304 communicating with the interior of the hollow structure is opened on the upper part of the stirring shaft 302, a sealing cover is installed on the injection port 304, a cooling water interlayer 2 is provided on the outer wall of the reactor body of the reactor 1, and the cooling water interlayer 2 is connected to a cooling system and an air pressure sensor 9.

[0008] A cooling water pipeline is laid in the cooling water interlayer 2, and a water inlet 201 and a drain outlet 203 connected to the cooling water pipeline are opened at the bottom of the cooling water interlayer 2. A water outlet 202 connected to the cooling water pipeline is opened on the upper side wall of the cooling water interlayer 2. The water inlet 201 is connected to the bottom of the cooling box 7 through the water inlet pipe 5, and the top of the cooling box 7 is connected to the water inlet 201 through the water outlet pipe 8.

[0009] A cooling fan group 6 is installed on the pipe wall of the water inlet pipe 5 .

[0010] The cooling box 7 is provided with a refrigeration system inside.

[0011] A water pump 10 is installed on the water inlet pipe 5 , and an electromagnetic flow control valve is installed on the water pump 10 .

[0012] A temperature sensor 12 is installed on the water outlet pipe 8 .

[0013] An air pressure detection port 204 and a water supply port 205 communicating with the cooling water interlayer 2 are provided on the upper side wall of the cooling water interlayer 2 , and an air pressure sensor 9 is installed on the air pressure detection port 204 .

[0014] The cooling box 7 is provided with a controller 11 , and the controller 11 is provided with an alarm. The controller 11 is electrically connected to the electromagnetic flow control valve, the temperature sensor 12 and the air pressure sensor 9 .

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The cooling control system of the present invention is conducive to precise cooling, while ensuring the normal operation of the entire cooling system, reducing the potential safety hazards caused by the rapid heating due to the large amount of heat released during the synthesis of the hexacarbon water reducer and the defects of the cooling system that cause the temperature gradient in the reactor to affect the product quality.

[0017] 2. The present invention reduces the reaction temperature of the reactor by using the coolant and cooling water interlayer in the hollow agitator. The controller and temperature sensor play a role in precise temperature control. The fan plays a role in reducing the temperature of the outflowing cooling water. The air pressure sensor can fill the shortage of cooling water through the change of water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be 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 paying creative work.

[0019] Figure 1 It is a schematic diagram of the utility model.

[0020] In the figure: reactor 1, cooling water interlayer 2, stirrer 3, coolant 4, water inlet pipe 5, cooling fan group 6, cooling box 7, water outlet pipe 8, air pressure sensor 9, control solenoid valve 10, feed port 101, discharge port 102, water inlet 201, water outlet 202, drain port 203, air pressure detection port 204, motor 301, stirring shaft 302, stirring paddle 303, injection port 304. DETAILED DESCRIPTION

[0021] 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 in 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.

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] A cooling control system for the production of hexacarbon polycarboxylic acid water-reducing agent, comprising a reactor 1, a feed inlet 101 is provided on the top cover of the reactor 1, a discharge port 102 is provided at the bottom of the reactor 1, a stirrer 3 extending into the interior of the reactor body is installed on the reactor cover of the reactor 1, the stirrer 3 is composed of a motor 301, a stirring shaft 302 and a stirring paddle 303, characterized in that: the stirring shaft 302 is a hollow structure, a coolant 4 is injected into the hollow structure of the stirring shaft 302, an injection port 304 communicating with the interior of the hollow structure is opened on the upper part of the stirring shaft 302, a sealing cover is installed on the injection port 304, a cooling water interlayer 2 is provided on the outer wall of the reactor body of the reactor 1, and the cooling water interlayer 2 is connected to a cooling system and an air pressure sensor 9.

[0024] A cooling water pipeline is laid in the cooling water interlayer 2, and a water inlet 201 and a drain outlet 203 connected to the cooling water pipeline are opened at the bottom of the cooling water interlayer 2. A water outlet 202 connected to the cooling water pipeline is opened on the upper side wall of the cooling water interlayer 2. The water inlet 201 is connected to the bottom of the cooling box 7 through the water inlet pipe 5, and the top of the cooling box 7 is connected to the water inlet 201 through the water outlet pipe 8.

[0025] A cooling fan group 6 is installed on the pipe wall of the water inlet pipe 5 .

[0026] The cooling box 7 is provided with a refrigeration system inside.

[0027] A water pump 10 is installed on the water inlet pipe 5 , and an electromagnetic flow control valve is installed on the water pump 10 .

[0028] A temperature sensor 12 is installed on the water outlet pipe 8 .

[0029] An air pressure detection port 204 and a water supply port 205 communicating with the cooling water interlayer 2 are provided on the upper side wall of the cooling water interlayer 2 , and an air pressure sensor 9 is installed on the air pressure detection port 204 .

[0030] The cooling box 7 is provided with a controller 11 , and the controller 11 is provided with an alarm. The controller 11 is electrically connected to the electromagnetic flow control valve, the temperature sensor 12 and the air pressure sensor 9 .

[0031] The working principle of the utility model is:

[0032] 1. The hollow structure of the stirring shaft 302 is injected with a coolant 4, which works together with the cooling water interlayer 2 to reduce the temperature from the inside to the outside, thereby preventing a temperature gradient from occurring in the reactor;

[0033] 2. The cooling water interlayer is the most important cooling link in the cooling system. The cooling water pipe is laid in the cooling water interlayer, and the heat in the reactor is taken away by the cooling water circulation, which plays the most important cooling role;

[0034] 3. The cooling box 7 is connected to the water outlet of the cooling water interlayer 2. The cooling water flow is controlled by the cooling water temperature, and the temperature is controlled by the cooling water flow. This link can achieve precise temperature control. Here, when the temperature sensor 12 detects that the outlet water temperature is too high, the controller 11 controls the electromagnetic flow control valve to increase the water flow, so as to cool down the temperature through a large flow of cooling water.

[0035] 4. Fan group: The cooling fan group can lower the temperature of the circulating water by driving air flow, and then re-enter the cooling interlayer through the cooling water pipe, so that the cooling water can be reused continuously;

[0036] 5. After the cooling water in the cooling water layer 2 passes through the reactor to take away the heat, a certain amount of water vapor will be generated due to the temperature rise. When the cooling water temperature is too high, the accumulated water vapor will cause water volatilization, resulting in the loss of part of the cooling water. When the water vapor reaches a certain value, a certain amount of water needs to be added to replenish the amount of cooling water in the cooling water layer 2 to prevent the cooling effect of the reactor from being affected by the shortage of cooling water. Here, when the air pressure sensor 9 detects that the air pressure of the cooling water in the cooling water layer 2 is too high, the alarm on the controller 11 will sound an alarm to remind the staff to add cooling water to the cooling water layer 2 from the water replenishment port 205.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A cooling control system for the production of hexacarbon polycarboxylic acid water-reducing agent, comprising a reactor (1), wherein a feed port (101) is provided on the top cover of the reactor (1), a discharge port (102) is provided on the bottom of the reactor (1), and a stirrer (3) extending into the reactor body is installed on the reactor cover of the reactor (1), wherein the stirrer (3) is composed of a motor (301), a stirring shaft (302) and a stirring paddle (303), and characterized in that: The stirring shaft (302) is a hollow structure, and a coolant (4) is injected into the hollow structure of the stirring shaft (302). An injection port (304) communicating with the interior of the hollow structure is provided on the upper portion of the stirring shaft (302), and a sealing cover is installed on the injection port (304). A cooling water interlayer (2) is provided on the outer wall of the reactor body of the reaction kettle (1), and the cooling water interlayer (2) is connected to a cooling system and an air pressure sensor (9).

2. A temperature reduction control system for the production of hexacarbon polycarboxylic acid water reducer according to claim 1, characterized in that: A cooling water pipeline is laid in the cooling water interlayer (2); a water inlet (201) and a water outlet (203) communicating with the cooling water pipeline are provided at the bottom of the cooling water interlayer (2); a water outlet (202) communicating with the cooling water pipeline is provided on the upper side wall of the cooling water interlayer (2); the water inlet (201) is communicated with the bottom of the cooling box (7) through a water inlet pipe (5); and the top of the cooling box (7) is communicated with the water inlet (201) through a water outlet pipe (8).

3. A temperature reduction control system for the production of hexacarbon polycarboxylic acid water-reducing agent according to claim 2, characterized in that: A cooling fan group (6) is installed on the pipe wall of the water inlet pipe (5).

4. A temperature reduction control system for the production of hexacarbon polycarboxylic acid water-reducing agent according to claim 2, characterized in that: The cooling box (7) is provided with a refrigeration system inside.

5. A temperature reduction control system for the production of hexacarbon polycarboxylic acid water-reducing agent according to claim 2, characterized in that: A water pump (10) is installed on the water inlet pipe (5), and an electromagnetic flow control valve is installed on the water pump (10).

6. A temperature reduction control system for the production of hexacarbon polycarboxylic acid water-reducing agent according to claim 2, characterized in that: A temperature sensor (12) is installed on the water outlet pipe (8).

7. A temperature reduction control system for the production of hexacarbon polycarboxylic acid water-reducing agent according to claim 2, characterized in that: An air pressure detection port (204) and a water replenishment port (205) communicating with the cooling water interlayer (2) are provided on the upper side wall of the cooling water interlayer (2), and an air pressure sensor (9) is installed on the air pressure detection port (204).

8. A temperature reduction control system for the production of hexacarbon polycarboxylic acid water-reducing agent according to claim 7, characterized in that: The cooling box (7) is provided with a controller (11), and an alarm is provided on the controller (11). The controller (11) is electrically connected to the electromagnetic flow control valve, the temperature sensor (12) and the air pressure sensor (9).

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