Stirring device for adding limestone powder into desulfurizing tower

Abstract

The limestone powder adding stirring device comprises a barrel, stirring rods, side scraping strips, a lifting plate and a scattering plate, a first motor is fixedly mounted in the center of the top end of the barrel, a first transmission rod is movably mounted in the center of the inner top end of the barrel, and a plurality of stirring rods are uniformly and fixedly mounted on the surface of the first transmission rod; four lifting plates are vertically, uniformly and fixedly mounted on the surface of the first transmission rod on one side of the stirring rod, a filling port is formed in the top end of the barrel on one side of the first motor, a discharge port is formed in one side of the inner bottom of the barrel, the bottom of the discharge port communicates with a conveying pipe, and a valve is movably mounted on the side wall of the conveying pipe; limestone powder deposited at the bottom of the barrel is lifted by arranging the lifting plate, so that the limestone powder can float to be stirred, slurry forming is accelerated, and the efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of desulfurization tower desulfurization, and in particular to a stirring device for adding limestone powder to a desulfurization tower. Background Art

[0002] Coal used for thermal power generation contains sulfur, which will appear in the form of sulfur dioxide or sulfur trioxide when burned at high temperatures. Limestone powder will produce calcium oxide, which is an alkaline substance, after burning at high temperatures. By adding limestone powder, the calcium oxide produced can react with sulfur dioxide in the flue gas to undergo an acid-base neutralization reaction, thereby effectively reducing the emission of sulfur dioxide. During the desulfurization process, limestone powder is mixed with water to form an absorbent slurry, which is mixed with the flue gas in the absorption tower. The sulfur dioxide in the flue gas reacts chemically with the calcium carbonate in the slurry and the oxidizing air blown in, and the final product is gypsum.

[0003] Application No. 201921637478.X discloses a stirring device for adding limestone powder to a desulfurization tower, including an observation window, a slurry discharge device, a limestone powder feed port, a stirring rod and a water spray regulating valve, etc. By installing a slurry discharge nozzle, the density of the water spray can be controlled. The slurry discharge nozzle is an adjustable nozzle, which is a component made of stainless steel. It increases the flexibility and practicality of the overall device, facilitates the change of the water spray amount required for different situations, and is more convenient to operate.

[0004] However, in use, there are the following defects:

[0005] Although a water inlet pipe is provided above the stirring rod to spray and stir the limestone powder, the limestone powder will directly fall to the bottom of the chamber after being added from the feed port, and the contact time with the stirring blades is short, resulting in insufficient stirring, which affects the slurry forming time. Utility Model Content

[0006] The purpose of the present application is to provide a stirring device for adding limestone powder to a desulfurization tower, which solves the problem proposed in the background technology that although a water inlet pipe is arranged above the stirring rod to spray and stir the limestone powder, the limestone powder will directly fall to the bottom of the cabin after being added from the feed inlet, and the contact time with the stirring blades is short, resulting in insufficient stirring, affecting the forming time of the slurry.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a stirring device for adding limestone powder to a desulfurization tower, comprising a cylinder, a stirring rod, a side scraper, a lifting plate and a breaking plate, a No. 1 motor is fixedly installed at the center of the top of the cylinder, and a No. 1 transmission rod is movably installed at the center of the inner top of the cylinder, a number of stirring rods are evenly fixedly installed on the surface of the No. 1 transmission rod, and four lifting plates are vertically evenly fixedly installed on the surface of the No. 1 transmission rod on one side of the stirring rod, a filling port is opened at the top of the cylinder on the side of the No. 1 motor, a discharge port is opened on one side of the inner bottom of the cylinder, the bottom of the discharge port is connected to a delivery pipe, and a valve is movably installed on the side wall of the delivery pipe.

[0008] In this technical solution, limestone powder is poured into the cylinder through the filling port, water in the water pipe is sprayed into the cylinder through the nozzle, and then the No. 1 motor is powered on and started, thereby driving the No. 1 transmission rod and the stirring rod to rotate, stir and mix to make slurry, and the slurry formation can be accelerated by the lifting plate and the side scraping strips. During the pouring process, part of the limestone powder will sink to the bottom of the cylinder and cannot be fully mixed with water. At this time, driven by the No. 1 transmission rod, the lifting plate can scrape up the deposited limestone powder again, and because the lifting plate is inclined, the limestone powder can be directed upward. , is fully stirred by the stirring rod, and the side scraping strip contacts the inner wall of the cylinder. During the rotation, the limestone powder on the side wall can be scraped off to reduce accumulation and adhesion, thereby improving the stirring efficiency of the device and accelerating the formation of the slurry. At the same time, the No. 2 motor, the No. 2 transmission rod and the breaking plate can assist the mixing of limestone powder and water. After the No. 2 motor is powered on, it starts and drives the No. 2 transmission rod and the breaking plate to rotate. The limestone powder will be broken up by the breaking plate during the pouring process and will not accumulate in one place in large quantities. The dispersed limestone powder can be mixed with water more conveniently, thereby improving the stirring efficiency of the device.

[0009] As an optional solution of the technical solution of the present application, a filter screen is detachably installed at the opening of the discharge port.

[0010] As an optional solution of the technical solution of the present application, a side scraper strip is fixedly installed on one end of the lifting plate facing the inner wall of the cylinder.

[0011] As an optional solution of the technical solution of the present application, a No. 2 transmission rod is movably installed on the inner wall of the cylinder below the filling port, and a breaking plate is fixedly connected to the side wall of the No. 2 transmission rod.

[0012] As an optional solution of the technical solution of the present application, a No. 2 motor is fixedly installed on the outer wall of the cylinder at one end of the No. 2 transmission rod facing the inner wall of the cylinder, and the tail end of the transmission shaft of the No. 2 motor is fixedly connected to the No. 2 transmission rod.

[0013] As an optional solution of the technical solution of the present application, a water pipe is transversely penetrated through the inner wall of the cylinder above the stirring rod and the lifting plate, and a plurality of nozzles are opened on the water pipe below the surface of the inner side of the cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present application can accelerate the formation of slurry through the lifting plate and the side scraping strips. During the pouring process, part of the limestone powder will sink to the bottom of the cylinder and cannot be fully mixed with water. At this time, driven by the No. 1 transmission rod, the lifting plate can scrape up the deposited limestone powder again, and because the lifting plate is inclined, the limestone powder can be guided upward to be fully stirred by the stirring rod. The side scraping strips contact the inner wall of the cylinder, and the limestone powder on the side wall can be scraped off during the rotation process, reducing accumulation and adhesion, thereby improving the stirring efficiency of the device.

[0016] 2. The present application can assist in mixing limestone powder and water through the No. 2 motor, the No. 2 transmission rod and the scattering plate. The No. 2 motor starts after being energized, driving the No. 2 transmission rod and the scattering plate to rotate. The limestone powder will be scattered by the scattering plate during the pouring process and will not accumulate in one place in large quantities. The dispersed limestone powder can be mixed with water more conveniently, thereby improving the stirring efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 This is an overall view of a stirring device for adding limestone powder to a desulfurization tower of the present application;

[0019] Figure 2 This is a cross-sectional schematic diagram of a stirring rod of a stirring device for adding limestone powder to a desulfurization tower of the present application;

[0020] Figure 3 This is a schematic diagram of the structure of a desulfurization tower where limestone powder is added.

[0021] In the figure: 1. Cylinder; 2. Filling port; 3. Motor No. 1; 4. Drive rod No. 1; 5. Stirring rod; 6. Water pipe; 7. Nozzle; 8. Discharge port; 801. Filter; 9. Delivery pipe; 10. Valve; 11. Lifting plate; 111. Side scraper; 12. Motor No. 2; 13. Drive rod No. 2; 14. Breaking plate. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, they are further explained below in conjunction with specific implementation methods.

[0023] like Figure 1 As shown, a stirring device for adding limestone powder to a desulfurization tower includes a cylinder 1, a stirring rod 5, a side scraper 111, a lifting plate 11 and a breaking plate 14. A No. 1 motor 3 is fixedly installed at the center of the top of the cylinder 1, and a filling port 2 is opened at the top of the cylinder 1 on one side of the No. 1 motor 3.

[0024] like Figure 2 As shown, a transmission rod No. 1 is movably installed in the center of the inner top of the cylinder 1, and a number of stirring rods 5 are evenly fixedly installed on the surface of the transmission rod No. 1 4, and four lifting plates 11 are vertically evenly fixedly installed on the surface of the transmission rod No. 1 4 on one side of the stirring rod 5, and a side scraper strip 111 is fixedly installed on one end of the lifting plate 11 facing the inner wall of the cylinder 1, and the lifting plate 11 can lift the limestone powder to accelerate the mixing.

[0025] like Figure 2 As shown, a water pipe 6 is transversely penetrated through the inner wall of the cylinder 1 above the stirring rod 5 and the lifting plate 11 , and a plurality of nozzles 7 are provided below the surface of the water pipe 6 located on the inner side of the cylinder 1 .

[0026] like Figure 3 As shown, a discharge port 8 is provided on one side of the inner bottom of the cylinder 1, the bottom of the discharge port 8 is connected to a delivery pipe 9, a valve 10 is movably installed on the side wall of the delivery pipe 9, and a filter screen 801 is detachably installed at the opening of the discharge port 8, and the filter screen 801 can prevent the unmixed limestone powder from blocking the discharge port 8.

[0027] like Figure 3 As shown, a No. 2 transmission rod 13 is movably installed on the inner wall of the cylinder body 1 below the filling port 2, and a scattering plate 14 is fixedly connected to the side wall of the No. 2 transmission rod 13. A No. 2 motor 12 is fixedly installed on the outer wall of the cylinder body 1 at one end of the No. 2 transmission rod 13 facing the inner wall of the cylinder body 1, and the rear end of the transmission shaft of the No. 2 motor 12 is fixedly connected to the No. 2 transmission rod 13. The scattering plate 14 can scatter the poured limestone powder, thereby facilitating quick mixing.

[0028] In actual use, limestone powder is poured into the cylinder 1 through the filling port 2, and the water in the water pipe 6 is sprayed into the cylinder 1 through the nozzle 7, and then the No. 1 motor 3 is powered on and started, thereby driving the No. 1 transmission rod 4 and the stirring rod 5 to rotate, stirring and mixing to make slurry. The slurry formation can be accelerated by the lifting plate 11 and the side scraping strip 111. During the pouring process, part of the limestone powder will sink to the bottom of the cylinder 1 and cannot be fully mixed with water. At this time, driven by the No. 1 transmission rod 4, the lifting plate 11 can scrape up the deposited limestone powder again, and because the lifting plate 11 is inclined, the limestone powder can be guided upward. The stirring rod 5 is fully stirred, and the side scraper 111 contacts the inner wall of the cylinder 1. During the rotation, the limestone powder on the side wall can be scraped off to reduce accumulation and adhesion, thereby improving the stirring efficiency of the device and accelerating the formation of the slurry. At the same time, the No. 2 motor 12, the No. 2 transmission rod 13 and the scattering plate 14 can assist the mixing of limestone powder and water. After the No. 2 motor 12 is powered on, it starts and drives the No. 2 transmission rod 13 and the scattering plate 14 to rotate. The limestone powder will be scattered by the scattering plate 14 during the pouring process and will not accumulate in one place in large quantities. The dispersed limestone powder can be mixed with water more conveniently, thereby improving the stirring efficiency of the device.

Claims

1. A stirring device for adding limestone powder to a desulfurization tower, comprising a cylinder (1), a stirring rod (5), a side scraping strip (111), a lifting plate (11) and a breaking plate (14), characterized in that: A No. 1 motor (3) is fixedly installed at the center of the top of the cylinder (1), and a No. 1 transmission rod (4) is movably installed at the center of the inner top of the cylinder (1). A plurality of stirring rods (5) are evenly fixedly installed on the surface of the No. 1 transmission rod (4), and four lifting plates (11) are vertically evenly fixedly installed on the surface of the No. 1 transmission rod (4) on one side of the stirring rod (5). A filling port (2) is provided at the top of the cylinder (1) on the side of the No. 1 motor (3), and a discharge port (8) is provided on one side of the inner bottom of the cylinder (1). The bottom of the discharge port (8) is connected to a delivery pipe (9), and a valve (10) is movably installed on the side wall of the delivery pipe (9).

2. The stirring device for adding limestone powder to a desulfurization tower according to claim 1, characterized in that: A filter screen (801) is detachably mounted at the opening of the discharge port (8).

3. The stirring device for adding limestone powder to a desulfurization tower according to claim 1, characterized in that: A side scraper strip (111) is fixedly mounted on one end of the lifting plate (11) facing the inner wall of the cylinder (1).

4. The stirring device for adding limestone powder to a desulfurization tower according to claim 1, characterized in that: A second transmission rod (13) is movably mounted on the inner side wall of the cylinder (1) below the filling port (2), and a breaking plate (14) is fixedly connected to the side wall of the second transmission rod (13).

5. The stirring device for adding limestone powder to a desulfurization tower according to claim 4, characterized in that: A No. 2 motor (12) is fixedly mounted on the outer wall of the cylinder (1) at one end of the No. 2 transmission rod (13) facing the inner wall of the cylinder (1), and the rear end of the transmission shaft of the No. 2 motor (12) is fixedly connected to the No. 2 transmission rod (13).

6. The stirring device for adding limestone powder to a desulfurization tower according to claim 1, characterized in that: A water pipe (6) is transversely passed through the inner wall of the cylinder (1) above the stirring rod (5) and the lifting plate (11), and a plurality of nozzles (7) are provided below the surface of the water pipe (6) located inside the cylinder (1).

Images