Pretreatment device for chemical raw materials

Abstract

The utility model discloses a pretreatment device for chemical raw materials, which relates to the technical field of chemical raw material treatment, and comprises a standard alkali tank, the bottom of the standard alkali tank is connected with a discharge pipe, one end of the discharge pipe is connected with the output end of a circulating pump, the end part of a detection pipe is connected with a differential pressure transmitter, and the differential pressure transmitter is connected with a pressure sensor. The other end part of the differential pressure transmitter is connected with a second connecting pipe communicated with the interior of the standard alkali tank; through the design of the circulating pump and the circulating pipe, the circulating flow of liquid is realized, the chemical reaction is promoted, the pretreatment efficiency is improved, meanwhile, the uniformity of the temperature and the concentration of the liquid is maintained, and through the configuration of the detection pipe and the differential pressure transmitter, the relevant parameters of the liquid can be accurately measured, reliable data support is provided for production, and the production cost is reduced. And after the liquid is discharged, the device is easy to clean after the liquid is discharged by setting the flushing trend path, so that the interference of residues on the equipment is avoided, and the service life of the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical raw material processing technical field, concretely relates to a kind of pretreatment device for chemical raw materials. BACKGROUND

[0002] In the chemical industry, the pretreatment of raw materials is one of the key steps to ensure the smooth progress of production process. For chemical raw materials that need to use alkaline solution, it is often necessary to circulate, mix, detect and discharge the alkaline solution during the pretreatment process.

[0003] The traditional chemical raw material pretreatment device often lacks precise flow and pressure monitoring means when circulating alkaline solution, which makes it impossible to accurately understand the state of the solution in time, thereby affecting the efficiency and accuracy of raw material pretreatment. In addition, the traditional device may also cause environmental pollution and resource waste when discharging waste liquid due to the lack of effective control means. Therefore, the utility model provides a pretreatment device for chemical raw materials. SUMMARY

[0004] The utility model aims at providing a pretreatment device for chemical raw materials to solve the problem of the traditional chemical raw material pretreatment device lacking precise flow and pressure monitoring means when circulating alkaline solution, which makes it impossible to accurately understand the state of the solution in time, thereby affecting the efficiency and accuracy of raw material pretreatment. In addition, the traditional device may also cause environmental pollution and resource waste when discharging waste liquid due to the lack of effective control means.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A pretreatment device for chemical raw materials, comprising a standard alkali tank, a discharge pipe connected to the bottom of the standard alkali tank, a circulating pump output end connected to one end of the discharge pipe, an equal-diameter tee connected to the other output end of the circulating pump, a first connecting pipe fixedly connected to the side end of the equal-diameter tee, a blowdown valve installed on the outer surface of the end of the first connecting pipe, a detection pipe connected to the outer surface of the end of the first connecting pipe near the blowdown valve, a differential pressure transmitter connected to the end of the detection pipe, and a second connecting pipe connected to the inside of the standard alkali tank at the other end of the differential pressure transmitter.

[0007] Optionally, the outer surfaces of the discharge pipe and the first connecting pipe are both installed with an inspection valve.

[0008] Optionally, the right-angle end of the equal-diameter tee pipe is connected with a reducing tee pipe, another side end of the reducing tee pipe is connected with a circulation pipe, the other end of the circulation pipe extends to the inside of the standard alkali tank, and the outer surface of the circulation pipe is provided with a circulation valve, the pipe body of the circulation pipe close to the circulation valve extends an upward branch pipe, and the pipe body of the branch pipe is provided with a field valve.

[0009] Optionally, the right-angle end of the reducing tee pipe is connected with a flushing pipe, and the other end of the flushing pipe is communicated with the detection pipe.

[0010] Optionally, the upper end surface of the standard alkali tank is provided with a concentrated alkali pipe, a dilute alkali pipe and a water pipe communicated to the inside of the standard alkali tank, and the concentrated alkali pipe, the dilute alkali pipe and the water pipe are arranged side by side.

[0011] Optionally, the upper end surface of the standard alkali tank is further provided with a continuous liquid level meter penetrating to the bottom of the standard alkali tank.

[0012] Optionally, a stirring motor is fixedly installed in the middle of the upper end surface of the standard alkali tank, and an output end of the stirring motor is fixedly connected with a frame type stirring rod located in the inside of the standard alkali tank.

[0013] Optionally, an electric control cabinet is fixedly installed on the outer wall of the standard alkali tank.

[0014] The beneficial effects of the present application are as follows:

[0015] In the present application, the circulation pump and the circulation pipe are designed to realize the circulation flow of the liquid, not only promote the chemical reaction, but also improve the pretreatment efficiency, and maintain the uniformity of the liquid temperature and concentration, and through the configuration of the detection pipe and the differential pressure transmitter, the related parameters of the liquid can be accurately measured to provide reliable data support for production, and after the liquid is discharged, the device is easy to clean after discharging the liquid by setting the flushing path, avoiding the interference of the residual material on the equipment, and prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of a pretreatment device for chemical raw materials of the present application;

[0017] Fig. 2 It is a structural schematic view of another view of a pretreatment device for chemical raw materials of the present application;

[0018] Fig. 3 It is a structural schematic view of the inside of the standard alkali tank in the present application.

[0019] The figure numbers are:

[0020] 1, standard alkali tank; 2, discharge pipe; 3, circulating pump; 4, equal diameter tee pipe; 5, first connecting pipe; 6, maintenance valve; 7, blowdown valve; 8, detection pipe; 9, differential pressure transmitter; 10, second connecting pipe; 11, reducing tee pipe; 12, flushing pipe; 13, circulating pipe; 14, field valve; 15, circulating valve; 16, stirring motor; 17, frame stirring rod; 18, continuous liquid level meter; 19, concentrated alkali pipe; 20, dilute alkali pipe; 21, water pipe; 22, electric control cabinet. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described in combination with specific embodiments.

[0022] The utility model is described below in combination with a preferred embodiment of the device.

[0023] Please refer to Figs. 1-3 As shown in the figure, the pretreatment device for chemical raw materials comprises a standard alkali tank 1, the bottom of the standard alkali tank 1 is connected with a discharge pipe 2, one end of the discharge pipe 2 is connected with the output end of a circulating pump 3, the other output end of the circulating pump 3 is connected with an equal diameter tee pipe 4, the side end of the equal diameter tee pipe 4 is fixedly connected with a first connecting pipe 5, the outer surface of the end part of the first connecting pipe 5 is installed with a blowdown valve 7, the outer surface of the end of the first connecting pipe 5 close to the blowdown valve 7 is connected with a detection pipe 8, the end part of the detection pipe 8 is connected with a differential pressure transmitter 9, the other end part of the differential pressure transmitter 9 is connected with a second connecting pipe 10 which is communicated to the inside of the standard alkali tank 1.

[0024] Further, the outer surfaces of the discharge pipe 2 and the first connecting pipe 5 are both installed with a maintenance valve 6.

[0025] Further, the right angle end of the equal diameter tee pipe 4 is connected with a reducing tee pipe 11, the other side end of the reducing tee pipe 11 is connected with a circulating pipe 13, the other end of the circulating pipe 13 extends to the inside of the standard alkali tank 1, and the outer surface of the circulating pipe 13 is provided with a circulating valve 15, the pipe body of the circulating pipe 13 close to the circulating valve 15 extends an upward branch pipe, and the pipe body of the branch pipe is provided with a field valve 14.

[0026] Further, the right angle end of the reducing tee pipe 11 is connected with a flushing pipe 12, and the other end of the flushing pipe 12 is communicated with the detection pipe 8.

[0027] Further, the upper end surface of the standard alkali tank 1 is provided with a concentrated alkali pipe 19, a dilute alkali pipe 20 and a water pipe 21 which communicate to the inside of the standard alkali tank 1, and the concentrated alkali pipe 19, the dilute alkali pipe 20 and the water pipe 21 are arranged side by side. Specifically, in the pretreatment process of chemical raw materials, sometimes high-concentration alkali solution is needed for specific chemical reactions. Through the concentrated alkali pipe 19, the required amount of high-concentration alkali solution can be conveniently added to the standard alkali tank 1. The setting of the dilute alkali pipe 20 enables the operator to flexibly select the addition of dilute alkali solution to adjust the concentration and properties of the liquid in the standard alkali tank 1. The water pipe 21 is used to add clean water to the standard alkali tank 1, which can be used to dilute the alkali solution, adjust the pH value of the liquid or as a solvent for certain chemical reactions.

[0028] Further, the upper end surface of the standard alkali tank 1 is provided with a concentrated alkali pipe 19, a dilute alkali pipe 20 and a water pipe 21 which communicate to the inside of the standard alkali tank 1, and the concentrated alkali pipe 19, the dilute alkali pipe 20 and the water pipe 21 are arranged side by side. Specifically, in the pretreatment process of chemical raw materials, sometimes high-concentration alkali solution is needed for specific chemical reactions. Through the concentrated alkali pipe 19, the required amount of high-concentration alkali solution can be conveniently added to the standard alkali tank 1. The setting of the dilute alkali pipe 20 enables the operator to flexibly select the addition of dilute alkali solution to adjust the concentration and properties of the liquid in the standard alkali tank 1. The water pipe 21 is used to add clean water to the standard alkali tank 1, which can be used to dilute the alkali solution, adjust the pH value of the liquid or as a solvent for certain chemical reactions.

[0029] Further, the upper end surface of the standard alkali tank 1 is provided with a concentrated alkali pipe 19, a dilute alkali pipe 20 and a water pipe 21 which communicate to the inside of the standard alkali tank 1, and the concentrated alkali pipe 19, the dilute alkali pipe 20 and the water pipe 21 are arranged side by side. Specifically, in the pretreatment process of chemical raw materials, sometimes high-concentration alkali solution is needed for specific chemical reactions. Through the concentrated alkali pipe 19, the required amount of high-concentration alkali solution can be conveniently added to the standard alkali tank 1. The setting of the dilute alkali pipe 20 enables the operator to flexibly select the addition of dilute alkali solution to adjust the concentration and properties of the liquid in the standard alkali tank 1. The water pipe 21 is used to add clean water to the standard alkali tank 1, which can be used to dilute the alkali solution, adjust the pH value of the liquid or as a solvent for certain chemical reactions.

[0030] Further, the upper end surface of the standard alkali tank 1 is provided with a concentrated alkali pipe 19, a dilute alkali pipe 20 and a water pipe 21 which communicate to the inside of the standard alkali tank 1, and the concentrated alkali pipe 19, the dilute alkali pipe 20 and the water pipe 21 are arranged side by side. Specifically, in the pretreatment process of chemical raw materials, sometimes high-concentration alkali solution is needed for specific chemical reactions. Through the concentrated alkali pipe 19, the required amount of high-concentration alkali solution can be conveniently added to the standard alkali tank 1. The setting of the dilute alkali pipe 20 enables the operator to flexibly select the addition of dilute alkali solution to adjust the concentration and properties of the liquid in the standard alkali tank 1. The water pipe 21 is used to add clean water to the standard alkali tank 1, which can be used to dilute the alkali solution, adjust the pH value of the liquid or as a solvent for certain chemical reactions.

[0031] Specifically, the detection of the liquid goes like this: the liquid flows out from the bottom of the standard alkali tank 1 through the discharge pipe 2, enters the circulating pump 3 after passing through the maintenance valve 6, and then the liquid is pressurized by the circulating pump 3. The pressurized liquid then passes through the equal-diameter tee pipe 4. At the equal-diameter tee pipe 4, the circulating valve 15 is in the closed state, so the liquid will not flow back to the standard alkali tank 1 through the circulating pipe 13, but will selectively enter the first connecting pipe 5 through the side end of the equal-diameter tee pipe 4. After entering the first connecting pipe 5, the liquid continues to flow and approaches the blowdown valve 7. A detection pipe 8 is connected to the outer surface of the first connecting pipe 5. The liquid flows through the detection pipe 8 to the differential pressure transmitter 9. The differential pressure transmitter 9 is a high-precision sensor that can measure the pressure difference generated by the liquid in the detection pipe 8, thereby indirectly reflecting the flow, pressure or other related parameters of the liquid. The other end of the differential pressure transmitter 9 is connected to the inside of the standard alkali tank 1 through the second connecting pipe 10, which means that after the detection is completed, the liquid sample will be re-injected into the standard alkali tank 1 to mix with the main stream of liquid, thereby achieving the recycling and maximum utilization of resources.

[0032] The circulation direction of the liquid: before detection, in order to ensure that the liquid concentration is uniformly mixed, the liquid first flows out from the bottom of the standard alkali tank 1 through the discharge pipe 2, enters the circulating pump 3 through the maintenance valve 6, at this time, the circulating valve 15 is in the open state, and the blowdown valve 7, the field valve 14 and the related valve connected with the differential pressure transmitter 9 are kept closed, the circulating pump 3 pressurizes the liquid, the liquid is sent into the circulating pipe 13 through the straight-through end of the equal-diameter tee pipe 4, the circulating pipe 13 guides the liquid back to the inside of the standard alkali tank 1, forming a closed circulation loop, the main role of this circulation direction is to promote the uniform mixing of the liquid in the standard alkali tank 1 and the chemical reaction, through the pressurization of the circulating pump 3 and the guidance of the circulating pipe 13, the liquid continuously circulates in the standard alkali tank 1, which helps to accelerate the chemical reaction rate and improve the pretreatment efficiency of the chemical raw materials, at the same time, the circulation process also helps to maintain the uniformity of the temperature and concentration of the liquid in the standard alkali tank 1, ensuring the consistency and stability of the pretreatment process.

[0033] The direction of the liquid to the field: when the liquid needs to be transported to the field for treatment or discharge, the direction of the liquid changes, at this time, the circulating valve 15 is kept in the closed state to prevent the liquid from continuing to circulate back to the standard alkali tank 1, at the same time, the maintenance valve 6 and the circulating pump 3 are kept in the open state to ensure that the liquid can smoothly flow out, the liquid continues to flow to the circulating pipe 13 through the equal-diameter tee pipe 4, on the circulating pipe 13, the field valve 14 is opened, so that the liquid can flow to the field, the main role of this direction is to directly transport the liquid in the standard alkali tank 1 to the field for treatment or discharge, the opening of the field valve 14 enables the liquid to flow to the specified position according to the demand, meeting the demand of the field treatment or discharge.

[0034] The flushing direction of the liquid: after the discharge of the liquid in the standard alkali tank 1 is completed, water is added for device flushing, the flushing liquid pressurizes and flows out from the discharge pipe 2 through the circulating pump 3, the liquid flows to the flushing pipe 12 through the equal-diameter tee pipe 4, flows to the detection pipe 8 through the flushing pipe 12, the flushing liquid flows in the detection pipe 8, flushing away the residual liquid or impurities, then, the flushing liquid flows back to the standard alkali tank 1 through the differential pressure transmitter 9 and the second connecting pipe 10, by regularly flushing the detection pipe 8, the residual liquid or impurities can be removed, preventing them from interfering with the measurement results or affecting the normal operation of the equipment.

[0035] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, the above examples and descriptions in the specification are only the principles of the present application, various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, these changes and improvements all fall within the scope of the present application. The protection scope required by the present application is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for chemical raw materials, characterized by: Including standard alkali tank (1), the bottom of standard alkali tank (1) is connected with discharge pipe (2), one end of discharge pipe (2) is connected with the output end of circulating pump (3), the other output end of circulating pump (3) is connected with equal-diameter tee pipe (4), the side end of equal-diameter tee pipe (4) is fixedly connected with first connecting pipe (5), the outer surface of the end of first connecting pipe (5) is provided with blowdown valve (7), and the outer surface of the end of first connecting pipe (5) close to blowdown valve (7) is connected with detection pipe (8), the end of detection pipe (8) is connected with differential pressure transmitter (9), the other end of differential pressure transmitter (9) is connected with second connecting pipe (10) communicated to the inside of standard alkali tank (1).

2. A device for pretreatment of chemical raw materials according to claim 1, characterized in that: The outer surfaces of discharge pipe (2) and first connecting pipe (5) are provided with repair valves (6).

3. The pre-treatment device for chemical raw materials according to claim 1, characterized in that: The right-angle end of equal-diameter tee pipe (4) is connected with reducing tee pipe (11), the other side end of reducing tee pipe (11) is connected with circulating pipe (13), the other end of circulating pipe (13) extends to the inside of standard alkali tank (1), and the outer surface of circulating pipe (13) is provided with circulating valve (15), the pipe body of circulating pipe (13) close to circulating valve (15) extends upward branch pipe, and the pipe body of branch pipe is provided with field valve (14).

4. The pre-treatment device for chemical raw materials according to claim 3, characterized in that: The right-angle end of reducing tee pipe (11) is connected with flushing pipe (12), and the other end of flushing pipe (12) is communicated with detection pipe (8).

5. The pre-treatment device for chemical raw materials according to claim 1, characterized in that: The upper end surface of standard alkali tank (1) is provided with concentrated alkali pipe (19), weak alkali pipe (20) and water pipe (21) communicated to the inside of standard alkali tank (1), and concentrated alkali pipe (19), weak alkali pipe (20) and water pipe (21) are arranged side by side.

6. The pre-treatment device for chemical raw materials according to claim 1, characterized in that: The upper end surface of standard alkali tank (1) is further provided with continuous liquid level meter (18) penetrating to the bottom of standard alkali tank (1).

7. The pre-treatment device for chemical raw materials according to claim 1, characterized in that: The upper end surface of standard alkali tank (1) is further provided with continuous liquid level meter (18) penetrating to the bottom of standard alkali tank (1).

8. The pre-treatment device for chemical raw materials according to claim 1, characterized in that: The upper end surface of standard alkali tank (1) is further provided with continuous liquid level meter (18) penetrating to the bottom of standard alkali tank (1). The outer wall of standard alkali tank (1) is fixedly installed with electric control cabinet (22).

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