Tank for preparing uniform desulfurized limestone slurry with oxidability

Abstract

The utility model discloses a tank for preparing uniform desulfurized limestone slurry with oxidability, which belongs to the technical field of flue gas desulfurization and comprises a preparation tank, a feed inlet and a water inlet are arranged on the top surface of the preparation tank, an ultrasonic transducer is arranged at the bottom of the preparation tank, a liquid outlet pipe is arranged on the right side of the preparation tank, and a stirring component is arranged in the preparation tank. A filter screen is arranged on the right side of the stirring assembly; the device further comprises an ultrasonic control device which is connected with the ultrasonic transducer through an electric wire. According to the device disclosed by the utility model, air nanobubbles generated by the ultrasonic transducer have certain stability and oxidability, and can provide certain oxidation capacity for limestone slurry absorbing sulfur dioxide, so that the energy consumption of air oxidation is reduced, and gypsum with better quality is obtained; the uniform viscosity of limestone slurry can be ensured with the help of the ultrasonic transducer and the filter screen, and higher reaction efficiency can be achieved when the limestone slurry reacts with sulfur dioxide, so that a gypsum product with a better condition can be obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas desulfurization technical field especially relates to a preparation even and oxidation's desulfurization limestone slurry tank. BACKGROUND

[0002] Most of the flue gas desulfurization system of thermal power plant adopts the method for limestone-gypsum desulfurization, that is, using lime or limestone slurry in absorption tower to absorb sulfur dioxide in flue gas, obtaining the mixed solution of calcium sulfite and calcium sulfate, then air is introduced to carry out oxidation, and the obtained calcium sulfate slurry is prepared into finished product calcium sulfate (gypsum) after centrifugal filtration and washing.

[0003] The existing limestone slurry is difficult to keep uniform in the preparation process, and it is difficult to obtain the slurry with large specific gravity of calcium sulfate after absorbing sulfur dioxide. UTILITY MODEL CONTENT

[0004] The utility model discloses a preparation even and oxidation's desulfurization limestone slurry tank, solve the existing limestone slurry in the preparation process of the stickiness degree difficult to keep uniform, and it is difficult to obtain the slurry with large specific gravity of calcium sulfate after absorbing sulfur dioxide.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model discloses a preparation even and oxidation's desulfurization limestone slurry tank, including preparation tank, the top of preparation tank is provided with feed inlet and water inlet, the bottom of preparation tank is provided with ultrasonic transducer, the right side of preparation tank is provided with liquid outlet pipe, the inside of preparation tank is provided with stirring subassembly, the right side of stirring subassembly is provided with filter screen, still including ultrasonic control device, ultrasonic control device with ultrasonic transducer wire connection.

[0007] Further, the stirring subassembly includes a power device, the power device is arranged on the top surface of the preparation tank, the inside of the preparation tank is provided with a stirring rod, the stirring rod is connected with the power device, the bottom of the stirring rod is provided with a stirring blade.

[0008] Further, the liquid outlet pipe is provided with a valve.

[0009] Further, the lower portion of the preparation tank is provided with a structural member, and the ultrasonic transducer is arranged on the structural member.

[0010] Further, the structural member comprises an upper structural member and a lower structural member, piezoelectric ceramics are arranged between the upper structural member and the lower structural member, upper ends of the piezoelectric ceramics are connected with positive connection lines, lower ends of the piezoelectric ceramics are connected with negative connection lines, and the positive connection lines and the negative connection lines are connected with an ultrasonic control device.

[0011] Compared with the prior art, the device has the beneficial technical effects that:

[0012] The device uses the air nanometer bubbles generated by the ultrasonic transducer, which has certain stability and oxidizability, can provide certain oxidizability for the limestone slurry for absorbing sulfur dioxide, reduces the energy consumption of air oxidation, and obtains high-quality gypsum; the filter screen is installed in the preparation tank, the frequency and power of the transducer can be adjusted according to the actual industrial conditions by using the ultrasonic control device, and the practicability and convenience are better; the limestone slurry can be guaranteed to have uniform viscosity with the help of the ultrasonic transducer and the filter screen, and a higher reaction efficiency is achieved when reacting with sulfur dioxide, so that the gypsum product has better conditions. BRIEF DESCRIPTION OF DRAWINGS

[0013] The device will be further described below in combination with the drawings.

[0014] Figure 1 It is a sectional view of the device for preparing uniform and oxidizing desulfurization limestone slurry tank.

[0015] Figure 2 It is a schematic view of the positional relationship of the structural member, piezoelectric ceramics, positive connection lines and negative connection lines.

[0016] The reference signs are explained as follows: 1, preparation tank; 2, feed inlet; 3, power device; 4, water inlet; 5, filter screen; 6, valve; 7, liquid outlet pipe; 8, structural member; 9, ultrasonic transducer; 10, piezoelectric ceramics; 11, positive connection line; 12, negative connection line; 13, ultrasonic control device; 14, stirring blade; 15, stirring rod. DETAILED DESCRIPTION

[0017] As Figures 1-2As shown in a kind of preparation even and oxidation of desulfurization limestone slurry tank, including preparation tank 1, the top of the preparation tank 1 is connected with feed inlet 2 and water inlet 4, the bottom of the preparation tank 1 is equipped with ultrasonic transducer 9, the right side of the preparation tank 1 is connected with liquid outlet pipe 7, valve 6 is installed on the liquid outlet pipe 7, stirring assembly is installed in the inside of the preparation tank 1, the right side of the stirring assembly is provided with filter screen 5, filter screen 5 is vertically arranged, and it needs to be cleaned regularly;It also includes ultrasonic control device 13, and the ultrasonic control device 13 is connected with the ultrasonic transducer 9 by wire;Specifically, ultrasonic control device is prior art device, can select multi-frequency high-power ultrasonic generator, model is JYD-1500E, other models can also be selected according to actual needs;Ultrasonic transducer is purchased spare, and recommended model is JYD28-40, other models can also be selected according to actual needs.

[0018] As Figure 2 As shown in the drawing, the stirring assembly includes power device 3, the power device 3 is installed on the top of the preparation tank 1, the inside of the preparation tank 1 is rotatably connected with stirring rod 15, the stirring rod 15 is connected with the power device 3, and stirring blade 14 is installed at the bottom of the stirring rod 15;Specifically, power device 3 can select motor, and the output shaft of the motor is connected with stirring rod 15;When using, start motor, and motor drives stirring rod 15 and stirring blade 14 to rotate, then the slurry and water are mixed, while filter screen 5 is installed in the preparation tank 1, the limestone slurry is filtered during mixing, and then is sent out by liquid outlet pipe 7.

[0019] The lower portion of the preparation tank 1 is provided with structural member 8, and the ultrasonic transducer 9 is arranged on the structural member 8, and the preparation tank 1 is connected with each other by the structural member 8.The structural member 8 includes upper structural member and lower structural member, piezoelectric ceramic 10 is installed between the upper structural member and the lower structural member, the upper end of the piezoelectric ceramic 10 is connected with positive connection line 11, the lower end of the piezoelectric ceramic 10 is connected with negative connection line 12, and the positive connection line 11 and the negative connection line 12 are connected with ultrasonic control device 13;In this way, the positive and negative connection lines connected with the piezoelectric ceramic are not affected.

[0020] The working process of the utility model is as follows:

[0021] First, the limestone powder and process water are respectively from the feed inlet 2 and water inlet 4 into the preparation tank 1, open the power device 3, the power device 3 drives the stirring rod 15, stirring blade 14 rotation, mixed water and limestone powder into limestone slurry, at this time the staff again operate ultrasonic control device 13, adjust the frequency and power generated by ultrasonic transducer 9, a large number of air nanobubbles are generated in the preparation tank 1 by cavitation effect, the air nanobubbles itself has a certain stability and oxidizability, which can provide a certain oxidation capacity for the limestone slurry solution absorbing sulfur dioxide, reduce the energy consumption of the oxidation fan to provide air oxidation, obtain better quality gypsum; The air nanobubble generation process makes the limestone slurry mixture more uniform; The limestone slurry will pass through the filter screen 5 to the right side of the preparation tank 1 at the same time, the filter screen 5 can block the limestone powder that is not completely mixed, so that the concentration of the limestone slurry sent out can be as uniform as possible, and the limestone slurry with a certain oxidizability is fully mixed, then the staff opens the valve 6, and sends it into the desulfurization tower through the liquid outlet pipe 7, thereby improving the sulfur dioxide absorption effect and conversion effect.

[0022] The above-described embodiments are only used to describe the preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A tank for preparing a uniform and oxidized desulfurized limestone slurry, characterized by: The utility model provides a lime slurry preparation tank, which comprises a preparation tank (1), the top surface of the preparation tank (1) is provided with a feeding port (2) and a water inlet (4), the bottom of the preparation tank (1) is provided with an ultrasonic transducer (9) for generating air nanobubbles in the preparation tank to make the lime slurry have oxidizing property, the right side of the preparation tank (1) is provided with a liquid outlet pipe (7), the inside of the preparation tank (1) is provided with a stirring assembly, the right side of the stirring assembly is provided with a filter screen (5) for filtering undissolved particles in real time to keep the slurry viscosity uniform, and the ultrasonic transducer (9) is electrically connected with an ultrasonic control device (13).

2. The preparation of uniform and oxidized desulfurized limestone slurry tank according to claim 1, characterized by: The stirring assembly comprises a power device (3) arranged on the top surface of the preparation tank (1), the inside of the preparation tank (1) is provided with a stirring rod (15) connected with the power device (3), and the bottom of the stirring rod (15) is provided with stirring blades (14).

3. The preparation of uniform and oxidized desulfurized limestone slurry tank according to claim 1, characterized by: A valve (6) is arranged on the liquid outlet pipe (7).

4. The preparation of uniform and oxidized desulfurized limestone slurry tank according to claim 1, characterized by: The preparation tank (1) is provided below with a structural member (8), and the ultrasonic transducer (9) is arranged on the structural member (8).

5. The preparation of uniform and oxidized desulfurized limestone slurry tank according to claim 4, characterized in that: The structural member (8) comprises an upper structural member and a lower structural member, a piezoelectric ceramic (10) is arranged between the upper structural member and the lower structural member, the upper end of the piezoelectric ceramic (10) is connected with a positive electrode connecting wire (11), the lower end of the piezoelectric ceramic (10) is connected with a negative electrode connecting wire (12), and the positive electrode connecting wire (11) and the negative electrode connecting wire (12) are connected with an ultrasonic control device (13).

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