Acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer accurate production device

Abstract

The utility model discloses an accurate production device for an acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer, and relates to the technical field of terpolymer production. The reaction kettle is mounted on the bottom pry, a liquid medicine storage tank is mounted on the bottom pry, the liquid medicine storage tank is connected with an inlet of a metering pump through a pipeline, an outlet of the metering pump is connected with a liquid inlet pipe, the liquid inlet pipe extends into the reaction kettle, and a one-way valve is mounted on the liquid inlet pipe; a medicament adding assembly A and a medicament adding assembly B are mounted at the upper part of the reaction kettle. The device disclosed by the utility model has the beneficial effects that the two screw conveyors are arranged for conveying acrylamide and propanesulfonic acid, the metering pump is used for adding n-octyl acrylate, and the running time of the screw conveyors can be calculated according to the total adding amount due to the special structures of the screw conveyors, so that the proportion of materials can be accurately mastered; meanwhile, acrylamide, propanesulfonic acid and n-octyl acrylate can be preheated by utilizing the temperature in the reaction kettle, so that the polymerization reaction strength is improved, and the polymerization reaction time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of terpolymer production, in particular to a precise production device for acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer. Background Art

[0002] Acrylamide, propanesulfonic acid and n-octyl acrylate are ternarily copolymerized under the action of a main catalyst and a co-catalyst in a certain temperature and pressure environment to obtain a ternary copolymer. When the ternary copolymer is produced, it is necessary to feed into the reactor. The existing feeding method usually adopts manual feeding of acrylamide and propanesulfonic acid, and n-octyl acrylate is added through a metering pump. Due to the existence of human factors, the ratio accuracy of the two monomer materials cannot be guaranteed and it is relatively laborious. Utility Model Content

[0003] In order to solve the problem that the ratio of two monomers cannot ensure accuracy when the terpolymer is manually fed during production, the utility model provides a precise production device for acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer.

[0004] The technical scheme provided by the utility model is: an acrylamide-propanesulfonic acid-octyl acrylate terpolymer precision production device, comprising a reactor, a stirrer is installed on the reactor, a discharge pipe is provided at the bottom of the reactor, a valve is installed on the discharge pipe, a heat exchange coil is installed in the reactor, the reactor is installed on a bottom skid, a liquid medicine storage tank is installed on the bottom skid, the liquid medicine storage tank has a pipeline connected to the inlet of a metering pump, the outlet of the metering pump is connected to a liquid inlet pipe, the liquid inlet pipe extends into the reactor, and a one-way valve is installed on the liquid inlet pipe;

[0005] A reagent dosing assembly A and a reagent dosing assembly B are installed on the upper part of the reactor. The reagent dosing assembly A and the reagent dosing assembly B have the same structure. The reagent dosing assembly A includes a screw conveyor. A reduction motor is fixedly connected to one side of the screw conveyor. The upper part of the screw conveyor is connected to a hopper. A discharge pipe is provided at the lower part of the screw conveyor. A cut-off valve is installed on the discharge pipe. The discharge pipe is sealed and welded to the upper part of the reactor.

[0006] The medicine dosing components A and B are frequency-controlled, and the metering pump is frequency-controlled.

[0007] The screw conveyor comprises an outer tube, a shaft and spiral fins welded on the shaft, the spiral fins have the same pitch, the spiral fins are made of steel plates with the same thickness, and the adjacent spiral fins, shaft and outer tube form a rectangular cross section.

[0008] The liquid inlet pipe enters from the lower part of the reactor and extends upward to above the liquid surface. After the liquid inlet pipe extends above the liquid surface, two elbows are welded, and the outlet of the liquid inlet pipe faces the liquid surface.

[0009] A vibration motor is installed on the outer shell of the hopper.

[0010] The beneficial effects of the utility model are as follows: two screw conveyors are arranged to convey acrylamide and propanesulfonic acid respectively, and a metering pump is used to add n-octyl acrylate. The special structure of the screw conveyor enables the operation time of the screw conveyor to be calculated according to the total addition amount, so that the material ratio can be accurately mastered. At the same time, the temperature in the reactor can be used to preheat the n-octyl acrylate, thereby increasing the polymerization reaction intensity and reducing the polymerization reaction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0012] Attached Figure 2 It is a partial cross-sectional view of the screw conveyor in the utility model.

[0013] In the figure: 1-reactor, 2-medicament dosing component A, 21-reduction motor, 22-hopper, 23-screw conveyor, 231-shaft, 232-spiral fin, 233-outer tube, 24-vibration motor, 25-discharge pipe, 3-medicament dosing component B, 4-agitator, 5-metering pump, 6-medicine storage tank, 7-bottom skid, 8-drain pipe, 9-liquid inlet pipe, 10-heat exchange coil. DETAILED DESCRIPTION

[0014] like Figures 1-2 As shown, a precise production device of acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer comprises a reactor 1, an agitator 4 is installed on the reactor 1, a discharge pipe 8 is provided at the lower part of the reactor 1, a valve is installed on the discharge pipe 8, a heat exchange coil 10 is installed in the reactor 1, the reactor 1 is installed on a bottom skid 7, a liquid medicine storage tank 6 is installed on the bottom skid 7, the liquid medicine storage tank 6 stores n-octyl acrylate, the liquid medicine storage tank 6 is connected to the inlet of a metering pump 5 by a pipeline, the outlet of the metering pump 5 is connected to a liquid inlet pipe 9, the liquid inlet pipe 9 extends into the reactor 1, and a one-way valve is installed on the liquid inlet pipe 9;

[0015] The upper part of the reactor 1 is equipped with a reagent dosing component A2 and a reagent dosing component B3. The reagent dosing component A2 conveys acrylamide, and the reagent dosing component B3 conveys propanesulfonic acid. The reagent dosing component A2 and the reagent dosing component B3 have the same structure. The structure is described by taking the reagent dosing component A2 as an example: the reagent dosing component A2 includes a screw conveyor 23, one side of the screw conveyor 23 is fixedly connected to a reduction motor 21, the upper part of the screw conveyor 23 is connected to a hopper 22, and the lower part of the screw conveyor 23 is provided with a discharge pipe 25, a cut-off valve is installed on the discharge pipe 25, and the discharge pipe 25 is sealed and welded to the upper part of the reactor 1.

[0016] The medicine dosing components A2 and B3 are frequency-controlled, and the metering pump 5 is frequency-controlled so as to control the dosing speed.

[0017] The screw conveyor 23 includes an outer tube 233, a shaft 231 and spiral fins 232 welded on the shaft 231. The spiral fins 232 have the same pitch and are made of steel plates of the same thickness. The adjacent spiral fins 232, shaft 231 and outer tube 233 form a rectangular cross-section, which can accurately calculate the weight of the material conveyed by the screw conveyor 23 in one rotation. The total number of revolutions of the screw conveyor 23 can be calculated based on the total amount of polymerization.

[0018] The liquid inlet pipe 9 enters from the lower part of the reactor 1 and extends upward to above the liquid level. The part of the liquid inlet pipe 9 below the liquid level can preheat the liquid in the reactor in advance. After the liquid inlet pipe 9 extends above the liquid level, two elbows are welded. The outlet of the liquid inlet pipe 9 faces the liquid level to prevent the material falling from the upper part from clogging the liquid inlet pipe 9.

[0019] Two screw conveyors 23 are provided to convey acrylamide and propanesulfonic acid respectively, and n-octyl acrylate is added by a metering pump 5. The special structure of the screw conveyor 23 allows the operation time of the screw conveyor 23 to be calculated according to the total dosage, so that the material ratio can be accurately mastered. At the same time, the temperature in the reactor 1 can be used to preheat n-octyl acrylate, thereby increasing the polymerization reaction intensity and reducing the polymerization reaction time.

[0020] A vibration motor 24 is mounted on the outer shell of the hopper 22 to allow the material to flow out smoothly.

Claims

1. A precise production device for acrylamide-propanesulfonic acid-octyl acrylate terpolymer, comprising a reaction kettle (1), characterized in that: The reactor (1) is provided with an agitator (4), a discharge pipe (8) is provided at the bottom of the reactor (1), a valve is provided on the discharge pipe (8), a heat exchange coil (10) is provided in the reactor (1), the reactor (1) is provided with a bottom skid (7), a liquid medicine storage tank (6) is provided on the bottom skid (7), a pipeline of the liquid medicine storage tank (6) is connected to the inlet of a metering pump (5), the outlet of the metering pump (5) is connected to a liquid inlet pipe (9), the liquid inlet pipe (9) extends into the reactor (1), and a one-way valve is provided on the liquid inlet pipe (9); A reagent dosing assembly A (2) and a reagent dosing assembly B (3) are installed on the upper part of the reaction kettle (1). The reagent dosing assembly A (2) and the reagent dosing assembly B (3) have the same structure. The reagent dosing assembly A (2) comprises a screw conveyor (23). One side of the screw conveyor (23) is fixedly connected to a reduction motor (21). The upper part of the screw conveyor (23) is connected to a hopper (22). The lower part of the screw conveyor (23) is provided with a discharge pipe (25). A cut-off valve is installed on the discharge pipe (25). The discharge pipe (25) is sealed and welded to the upper part of the reaction kettle (1).

2. The precise production device of acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer according to claim 1, characterized in that: The medicine dosing component A (2) and the medicine dosing component B (3) are frequency-converter controlled, and the metering pump (5) is frequency-converter controlled.

3. The precise production device of acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer according to claim 1, characterized in that: The screw conveyor (23) comprises an outer tube (233), a shaft (231) and spiral fins (232) welded on the shaft (231). The spiral fins (232) have the same pitch and are made of steel plates with the same thickness. The adjacent spiral fins (232), the shaft (231) and the outer tube (233) form a rectangular cross section.

4. The precise production device of acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer according to claim 1, characterized in that: The liquid inlet pipe (9) enters from the lower part of the reaction kettle (1) and extends upward to above the liquid surface. After the liquid inlet pipe (9) extends above the liquid surface, two elbows are welded, and the outlet of the liquid inlet pipe (9) faces the liquid surface.

5. The precise production device of acrylamide-propanesulfonic acid-n-octyl acrylate terpolymer according to claim 1, characterized in that: A vibration motor (24) is installed on the outer shell of the hopper (22).

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