Automatic dropwise adding reaction device

Abstract

The utility model discloses an automatic dripping reaction device, which belongs to the technical field of chemical equipment and comprises an alkali liquor input pipeline, a nitrogen input pipeline, a bubble trap device and a reaction kettle. According to the mode, when liquid dropping begins, nitrogen output from the nitrogen input pipeline enters the air compressor through the pneumatic control valve, after being compressed by the air compressor, the nitrogen enters the airflow type sprayer to conduct high-pressure spraying on alkali liquor to achieve atomized liquid spraying of the alkali liquor, and therefore rapid and uniform diffusion of the alkali liquor is achieved; and when the alkali liquor is atomized and sprayed out, no mixed reaction solution exists in the sprayer, so that the temperature of the sprayer is not increased, the sprayer is protected to a certain degree, and meanwhile, the influence on chemical substances of the solution can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field, concretely relates to a kind of automatic drop reaction device. BACKGROUND

[0002] Traditional drop mainly is divided into drop and two processes of sufficient reaction, drop reaction is often accompanied by high heat release, so high tank metering drop is needed, and the quantity of drop is controlled.

[0003] Chinese patent C20003959U discloses automatic drop device and automatic drop reaction device, raw material tank, drop control assembly, reaction temperature instrument, weighing module and controller;Drop control assembly is used to drop raw material in raw material tank to reactor;Drop control assembly includes material pipe and drop valve arranged on material pipe, one end of material pipe is communicated with raw material tank;Reaction temperature instrument is used to measure the reaction temperature in reactor;Reaction temperature instrument is temperature transmitter for measuring reaction temperature.

[0004] But the existing device still has the following problems: in the process of drop, the prior art directly adds reaction solution through pipeline, the uniform diffusion speed of reaction solution after drop is slow, which leads to slow reaction speed, and since reaction solution is easy to accumulate in the same area, there is a risk of easy aggregation explosion.

[0005] Based on this, the utility model designs a kind of automatic drop reaction device to solve the above problems. UTILITY MODEL CONTENT

[0006] In view of the above shortcomings of prior art, the utility model provides an automatic drop reaction device.

[0007] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0008] An automatic drop reaction device, comprising lye input pipeline, nitrogen input pipeline, bubble trap device and reaction kettle, high liquid level switch, low liquid level switch and low low liquid level switch are arranged on the bubble trap device, atomization device for atomizing and spraying lye is arranged in the reaction kettle, the output port of atomization device is arranged below the liquid level of solution in the reaction kettle, temperature sensor one and uniform stirring device for uniformly stirring reaction solution are arranged in the reaction kettle;

[0009] The lye input pipeline and nitrogen input pipeline are connected with the bubble trap device through input pipeline for controlling flow, the bubble trap device is connected with the atomization device through output pipeline for monitoring lye temperature and pressure, and the bubble trap device, input pipeline and output pipeline are connected with recovery pipeline.

[0010] Further, the atomization device comprises an air flow type sprayer and a compressed nitrogen gas pipeline, an air compressor is arranged on the compressed nitrogen gas pipeline, and an output end of the air compressor is connected with the air flow type sprayer through the compressed nitrogen gas pipeline.

[0011] Further, the input pipeline comprises a three-way pipeline, a flow control assembly and an input pipe, two side input ends of the three-way pipeline are connected with output ends of the lye input pipeline and the nitrogen gas input pipeline respectively, an output end of the three-way pipeline is connected with an input end of the input pipe, an output end of the input pipe is connected with an input end of the bubble trap device, and the flow control assembly is arranged between the three-way pipeline and the input pipe.

[0012] Further, the flow control assembly comprises a low-pressure fluid conveyor and a mass flow meter, and the low-pressure fluid conveyor and the mass flow meter are connected with the input pipe.

[0013] A pressure sensor one is connected between an output end of the low-pressure fluid conveyor and an input end of the input pipe.

[0014] Further, the output pipeline comprises an output pipe and a temperature and pressure detection assembly, an input end of the output pipe is connected with a liquid outlet of the bubble trap device, and an output end of the output pipe is connected with an input end of the air flow type sprayer.

[0015] Further, the temperature and pressure detection assembly comprises a temperature sensor two and a pressure sensor two, and the temperature sensor two and the pressure sensor two are connected with the output pipe.

[0016] Further, the recovery pipeline comprises a gas recovery pipe and a total recovery pipe, an input end of the gas recovery pipe is connected with a gas outlet of the bubble trap device, an output end of the gas recovery pipe is connected with the total recovery pipe, an input end and an output end of the mass flow meter are connected with the total recovery pipe through a first pipeline and a second pipeline respectively, and the output pipe is connected with the total recovery pipe through a third pipeline.

[0017] Further, the uniform stirring device comprises a stirring shaft, first stirring blades and second stirring blades, the stirring shaft is rotatably connected in the reaction kettle, the bottom end of the stirring shaft is fixedly connected with the first stirring blades in a symmetrical mode, and the second stirring blades are limitingly and slidably connected to the outer wall of the stirring shaft.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] 1. When the dripping starts, the nitrogen output from the nitrogen input pipe enters the air compressor through the pneumatic regulating valve. After being compressed by the air compressor, it enters the air flow sprayer to spray the alkali solution at high pressure to achieve atomization spray of the alkali solution, thereby achieving rapid and uniform diffusion of the alkali solution without causing aggregation of the reaction liquid. Since nitrogen is an inert gas and the reaction solution is not mixed inside the sprayer when the alkali solution is atomized and sprayed, the sprayer will not be heated, which has a certain protective effect on the sprayer and can also avoid affecting the chemical substances in the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0021] Fig. 1 This is a structural schematic diagram of an automatic dripping reaction device of the present utility model;

[0022] Fig. 2 Schematic diagram of the internal structure of the reactor.

[0023] Figure numerals: 1, bubble trap device; 2, reactor; 3, alkali solution input pipeline; 4, nitrogen input pipeline; 5, compressed nitrogen pipeline; 6, three-way pipeline; 7, input pipe; 8, output pipe; 9, gas recovery pipe; 10, total recovery pipe; 11, first pipeline; 12, second pipeline; 13, third pipeline; 14, stirring shaft; 15, first stirring blade; 16, second stirring blade. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] In some embodiments, please refer to the appendix of the specification. Figs. 1-2 , an automatic dripping reaction device, comprising an alkali solution input pipeline 3, a nitrogen input pipeline 4, a bubble trap device 1 (BUBLETRAP) and a reactor 2;

[0027] The bubble trap device 1 is provided with a high liquid level switch LSH01, a low liquid level switch LSL01 and a low-low liquid level switch LSLL01, the reaction kettle 2 is provided with an atomization device for atomizing and spraying the lye, the output of the atomization device is below the liquid level of the solution in the reaction kettle 2, the reaction kettle 2 is provided with a temperature sensor one TT02 and a uniform stirring device for uniformly stirring the reaction solution;

[0028] The lye input pipeline 3 and the nitrogen input pipeline 4 are connected with the bubble trap device 1 through input pipelines for controlling flow, the bubble trap device 1 is connected with the atomization device through output pipelines for monitoring the temperature and pressure of the lye, and the bubble trap device 1, the input pipelines and the output pipelines are connected with a recovery pipeline.

[0029] In use, the lye is transported into the input pipelines through the lye input pipeline 3 and is transported into the bubble trap device 1 under the condition of controlling flow, the gas outlet switch and the liquid outlet switch of the bubble trap device 1 are controlled through the high liquid level switch LSH01, the low liquid level switch LSL01 and the low-low liquid level switch LSLL01, then the lye is transported into the atomization device from the output pipelines and is sprayed from the atomization device to mix with the solution in the reaction kettle 2, after processing is completed, the input pipelines and the output pipelines are cleaned by blowing through the nitrogen output from the nitrogen input pipeline 4, and the recovery pipeline can also be blown by using nitrogen to realize waste liquid recovery.

[0030] The atomization device comprises an air flow type sprayer A1 and a compressed nitrogen pipeline 5, the compressed nitrogen pipeline 5 is provided with an air compressor B1, the output end of the air compressor B1 is connected with the air flow type sprayer A1 through the compressed nitrogen pipeline 5, the input end of the air compressor B1 is connected with a pneumatic regulating valve P11 through the compressed nitrogen pipeline 5, the input end of the pneumatic regulating valve P11 is connected with the nitrogen input pipeline 4 through the compressed nitrogen pipeline 5, and the output end of the air compressor B1 is connected with the air flow type sprayer A1 through the compressed nitrogen pipeline 5.

[0031] When the liquid drop starts, the nitrogen output from the nitrogen input pipeline 4 enters the air compressor B1 through the pneumatic regulating valve P11, is compressed by the air compressor B1 and then enters the air flow type sprayer A1 to spray the lye at high pressure and realize atomization of the lye, so that the lye is rapidly and uniformly diffused, since the nitrogen is an inert gas and the internal sprayer does not mix with the reaction solution when the lye is atomized and sprayed, the sprayer is not heated and is protected, and the chemical substances in the solution are not affected.

[0032] The input pipeline comprises a tee pipe 6, a flow control assembly and an input pipe 7, two sides of the input end of the tee pipe 6 are respectively connected with a pneumatic regulating valve P1 and a pneumatic regulating valve P2, the two sides of the input end of the tee pipe 6 are respectively connected with the output end of the lye input pipeline 3 and the nitrogen input pipeline 4, the output end of the input pipe 7 is connected with a pneumatic regulating valve P3, the output end of the tee pipe 6 is connected with the input end of the input pipe 7, the output end of the input pipe 7 is connected with the input end of the bubble trap device 1, a pneumatic regulating valve P6 is connected between the output end of the input pipe 7 and the input end of the bubble trap device 1, and the tee pipe 6 and the input pipe 7 are provided with the flow control assembly;

[0033] The flow control assembly comprises a low-pressure fluid conveyor SC and a mass flowmeter FE01, and the low-pressure fluid conveyor SC and the mass flowmeter FE01 are connected with the input pipe 7;

[0034] A pressure sensor one PT01 is connected between the output end of the low-pressure fluid conveyor SC and the input end of the input pipe 7;

[0035] When the drop flow is lower than the set value, the pump running frequency is increased to increase the liquid quantity, and the liquid level sensor on the liquid inlet main pipe also plays a role in protecting the low-pressure fluid conveyor from idling, the mass flowmeter and the low-pressure fluid conveyor are connected in series and control the drop liquid flow rate through PID control;

[0036] The output pipeline comprises an output pipe 8 and a temperature and pressure detection assembly, the input end of the output pipe 8 is connected with the liquid outlet of the bubble trap device 1, a pneumatic regulating valve P8 is connected between the liquid outlet of the bubble trap device 1 and the temperature and pressure detection assembly, and the output end of the output pipe 8 is connected with the input end of the airflow sprayer A1;

[0037] The temperature and pressure detection assembly comprises a temperature sensor two TT01 and a pressure sensor two PT02, and the temperature sensor two TT01 and the pressure sensor two PT02 are connected with the output pipe 8;

[0038] The recovery pipeline comprises a gas recovery pipe 9 and a total recovery pipe 10, the input end of the gas recovery pipe 9 is connected with the gas outlet of the bubble trap device 1, a pneumatic regulating valve P9 is connected between the input end of the gas recovery pipe 9 and the gas outlet of the bubble trap device 1, the output end of the gas recovery pipe 9 is connected with the total recovery pipe 10, the input end and the output end of the mass flowmeter FE01 are connected with the total recovery pipe 10 through a first pipeline 11 and a second pipeline 12 respectively, the output pipe 8 is connected with the total recovery pipe 10 through a third pipeline 13, a pneumatic regulating valve P4, a pneumatic regulating valve P5 and a pneumatic regulating valve P10 are respectively connected on the first pipeline 11, the second pipeline 12 and the third pipeline 13, a communication pipe is connected between the input pipe 7 and the output pipe 8, and a pneumatic regulating valve P7 is connected on the communication pipe;

[0039] The bubble trap device 1 is mainly composed of an external liquid level meter, a box body and an automatic exhaust valve, the liquid level is composed of a high liquid level, a low liquid level and a low-low liquid level, each liquid level point is controlled by a PLC, when the raw material just enters the bubble trap box body, the liquid level is relatively low, the liquid outlet valve is closed, the gas outlet valve is opened, when the liquid slowly rises to the LSL point, the liquid outlet valve is opened, the gas outlet valve remains in the opened state, when the liquid level continues to rise to the high liquid level, the liquid outlet remains in the opened state, the gas outlet is closed, the automatic exhaust and the inlet pressure are interlocked to keep the constant pressure state, and the pressure in the bubble trap is prevented from being too high;

[0040] The temperature sensor TT02 is additionally arranged in the kettle, the temperature sensor TT02 is interlocked with the liquid inlet valve and the low-pressure flow conveyor, the liquid inlet valve is closed and the low-pressure flow conveyor is stopped when the temperature in the kettle exceeds the temperature protection range, and the safety hidden danger of the reaction caused by the dropping is maximally ensured.

[0041] When nitrogen gas is blown, the nitrogen gas enters the input end of the tee pipe 6 and then is output from the output end of the tee pipe 6, then the nitrogen gas enters the first pipe 11, the second pipe 12 and the communication pipe respectively, the waste gas of the gas recovery pipe 9 is input into the total recovery pipe 10, and then the waste liquid is discharged from the third pipe 13 and the total recovery pipe 10.

[0042] The uniform stirring device comprises a stirring shaft 14, a first stirring blade 15 and a second stirring blade 16, the stirring shaft 14 is rotationally connected in the reaction kettle 2, the bottom end of the stirring shaft 14 is fixedly connected with the first stirring blade 15 in a symmetrical mode, and the outer wall middle part of the stirring shaft 14 is limitingly and slidably connected with the second stirring blade 16.

[0043] The stirring shaft 14 is fixedly connected with an external motor driving end, the external driving device drives the stirring shaft 14 to rotate, when the stirring shaft 14 drives the first stirring blade 15 to rotate, the second stirring blade 16 rotates together with the stirring shaft 14, in the rotating process, the second stirring blade 16 stirs the water flow in the inner ring small diameter range along with the water flow, so that the solution in most areas is simultaneously stirred, and the alkali liquor and the solution are diffused faster and more uniformly.

[0044] The above embodiments are only used to illustrate the technical solutions of the present application, rather than 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 the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic dropwise reaction device comprising a lye input pipeline (3), a nitrogen gas input pipeline (4), a bubble trap device (1) and a reaction kettle (2), characterized in that: The bubble trap device (1) is provided with a high liquid level switch (LSH01), a low liquid level switch (LSL01) and a low low liquid level switch (LSLL01), the reaction kettle (2) is provided with an atomizing device for atomizing and spraying alkali liquor, the atomizing device output is below the liquid level of the solution in the reaction kettle (2), the reaction kettle (2) is provided with a temperature sensor one (TT02) and a uniform stirring device for uniformly stirring the reaction solution; The alkali liquor input pipeline (3) and the nitrogen gas input pipeline (4) are connected with the bubble trap device (1) through an input pipeline for controlling flow, the bubble trap device (1) is connected with the atomizing device through an output pipeline for monitoring alkali liquor temperature and pressure, and the bubble trap device (1), the input pipeline and the output pipeline are connected with a recovery pipeline.

2. The automatic dropwise reaction apparatus according to claim 1, wherein The atomizing device comprises an air flow type sprayer (A1) and a compressed nitrogen gas pipeline (5), the compressed nitrogen gas pipeline (5) is provided with an air compressor (B1), and the output end of the air compressor (B1) is connected with the air flow type sprayer (A1) through the compressed nitrogen gas pipeline (5).

3. The automatic dropwise reaction apparatus according to claim 2, wherein The input pipeline comprises a tee pipeline (6), a flow control assembly and an input pipe (7), the two side input ends of the tee pipeline (6) are connected with the output ends of the alkali liquor input pipeline (3) and the nitrogen gas input pipeline (4) respectively, the output end of the tee pipeline (6) is connected with the input end of the input pipe (7), the output end of the input pipe (7) is connected with the input end of the bubble trap device (1), and the flow control assembly is arranged between the tee pipeline (6) and the input pipe (7).

4. The automatic dropwise reaction apparatus according to claim 3, wherein The flow control assembly comprises a low-pressure fluid conveyor (SC) and a mass flowmeter (FE01), and both the low-pressure fluid conveyor (SC) and the mass flowmeter (FE01) are connected with the input pipe (7); The output end of the low-pressure fluid conveyor (SC) is connected with the input end of the input pipe (7) through a pressure sensor one (PT01).

5. The automatic dropwise reaction apparatus according to claim 4, wherein The output pipeline comprises an output pipe (8) and a temperature and pressure detection assembly, the input end of the output pipe (8) is connected with the liquid outlet of the bubble trap device (1), and the output end of the output pipe (8) is connected with the input end of the air flow type sprayer (A1).

6. The automatic dropwise reaction apparatus according to claim 5, wherein The temperature and pressure detection assembly comprises a temperature sensor two (TT01) and a pressure sensor two (PT02), and both the temperature sensor two (TT01) and the pressure sensor two (PT02) are connected with the output pipe (8).

7. The automatic dropwise reaction apparatus according to claim 6, wherein The recovery pipeline comprises a gas recovery pipe (9) and a total recovery pipe (10), the input end of the gas recovery pipe (9) is connected with the gas outlet of the bubble trap device (1), the output end of the gas recovery pipe (9) is connected with the total recovery pipe (10), the input end and the output end of the mass flowmeter (FE01) are connected with the total recovery pipe (10) through a first pipeline (11) and a second pipeline (12) respectively, and the output pipe (8) is connected with the total recovery pipe (10) through a third pipeline (13).

8. The automatic dropwise reaction apparatus according to claim 7, wherein The uniform stirring device comprises a stirring shaft (14), a first stirring blade (15) and a second stirring blade (16), the stirring shaft (14) is rotationally connected in the reaction kettle (2), the bottom end of the stirring shaft (14) is fixedly connected with the first stirring blade (15) in a symmetrical mode, and the outer wall middle part of the stirring shaft (14) is limitingly and slidably connected with the second stirring blade (16).

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