A baking soda grinding and conveying device for hazardous waste incineration flue gas treatment

Abstract

The present invention belongs to the technical field of hazardous waste incineration, and particularly relates to a baking soda grinding and conveying device for hazardous waste incineration flue gas treatment, including a support frame, a feeding unit, a weighing unit and a grinding unit. The support frame provides support for the entire device; the feeding unit includes a guide rail, an electric hoist and a ton bag; the weighing unit includes a first conveying pipe, a second silo and a loss-in-weight scale; the grinding unit includes a grinder and a fan, and the baking soda conveyed by the weighing unit is ground, and then the ground baking soda is blown into a dry reaction tower through the fan. The present invention adopts a double silo structure and a double-screw feeder control, which can evenly discharge the material according to the required amount of baking soda, and can automatically adjust according to real-time feedback; at the same time, the baking soda is ground to less than 20um by a grinder and then transported to the dry reaction tower, which can better neutralize with acidic gases, purify flue gas better, and has a wider application field.

Description

Technical Field

[0001] The invention belongs to the technical field of hazardous waste incineration, and in particular relates to a baking soda grinding and conveying device in hazardous waste incineration flue gas treatment. Background Art

[0002] In the existing hazardous waste incineration, the baking soda used for acid gas removal is usually loaded into the baking soda storage bin at one time, and then refilled at one time after use. If the baking soda is not used for a long time, it is easy for the baking soda to harden in the storage bin, and when it is needed, the baking soda cannot fall smoothly, resulting in poor purification effect and low production efficiency of the enterprise. Summary of the invention

[0003] In view of various deficiencies in the prior art, the inventor has designed a baking soda grinding and conveying device for hazardous waste incineration flue gas treatment through long-term practice.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A baking soda grinding and conveying device for hazardous waste incineration flue gas treatment includes a support frame, a feeding unit, a weighing unit and a grinding unit. The support frame provides support for the entire device;

[0006] The loading unit comprises a guide rail, an electric hoist and a ton bag; the guide rail is fixed on the top of the support frame, the electric hoist is hoisted at the lower end of the guide rail and can move along the guide rail; the ton bag is hung at the bottom of the electric hoist;

[0007] A first silo is provided below the ton bag, which is fixed to the H-shaped steel frame of the support frame through a fixing piece; a first silo inlet is provided on the top of the first silo, and a cone bucket is provided at the bottom of the first silo;

[0008] The weighing unit is arranged at the lower end of the cone bucket, and includes a first conveying pipe, a second silo and a loss-in-weight scale; the top of the first conveying pipe is connected to the bottom of the cone bucket, and the bottom is connected to the feed port of the second silo;

[0009] A first flexible connector is provided between the first conveying pipe and the feed port of the second silo, and the first conveying pipe is connected to the feed port of the second silo through the first flexible connector; a double screw feeder is provided between the second silo and the loss-in-weight scale;

[0010] The discharge port of the second silo is connected to the second conveying pipe, and the baking soda is conveyed to the third conveying pipe through the second conveying pipe and then enters the grinding unit;

[0011] The grinding unit includes a grinder and a fan. The grinder is connected to the third conveying pipe to grind the baking soda conveyed by the weighing unit, and then the ground baking soda is blown into the fourth conveying pipe through the fan.

[0012] Furthermore, baffles are provided at both ends of the guide rail to prevent the electric hoist from falling off the guide rail due to improper operation.

[0013] Furthermore, a lifting frame is provided between the ton bag and the electric hoist.

[0014] Furthermore, the first silo is cylindrical with a cavity inside; the top of the first silo is a slope inclined toward the inlet of the first silo; the outer diameter of the first silo is 150 cm; the inlet of the first silo is circular with a diameter of 30 cm; the outer diameter of the top of the cone hopper is the same as the outer diameter of the first silo, and the outer wall of the cone hopper is at an angle of 65° to the horizontal plane.

[0015] Furthermore, a gate valve is provided at the top end of the first delivery pipe, a first rotary valve is provided at the bottom end of the gate valve, and the first delivery pipe is connected to the cone bucket through the gate valve and the first rotary valve.

[0016] Furthermore, a first flange is provided between the first rotary valve and the gate valve, and a first flange is also provided at the bottom of the first rotary valve.

[0017] Furthermore, the first flexible connector is a tube made of silicone; and a second silo mixer is provided next to the feed inlet of the second silo.

[0018] Furthermore, a second flexible connector is provided between the second delivery pipe and the third delivery pipe; and a second rotary valve is also provided at one end of the third delivery pipe close to the second delivery pipe.

[0019] Furthermore, second flanges are provided at the front and rear of the second rotary valve.

[0020] Furthermore, a grading wheel is provided between the grinder and the fan; and a square-to-round pipe fitting is provided between the outlet of the fan and the inlet of the fourth conveying pipe.

[0021] The beneficial effects of the present invention are:

[0022] The double silo structure and double screw feeder control can evenly discharge the baking soda according to the required amount, and can automatically adjust according to real-time feedback, which can effectively prevent the baking soda from caking. At the same time, the baking soda is ground to less than 20um by a grinder and then transported to the dry reaction tower, which can better neutralize the acid gas, purify the flue gas better, and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a right side view of the grinding and conveying device of the present invention;

[0024] Figure 2 is a front view of the grinding and conveying device of the present invention;

[0025] Figure 3 is a detailed schematic diagram of the first rotary valve of the present invention;

[0026] Figure 4 It is a detailed schematic diagram of the weight loss scale of the present invention;

[0027] Figure 5 It is a detailed schematic diagram of the fan of the present invention.

[0028] In the attached figure: 10-support frame, 20-feeding unit, 30-weighing unit, 40-grinding unit, 11-H-shaped steel frame, 12-support platform, 21-electric hoist, 22-ton bag, 23-guide rail, 24-lifting frame, 25-first silo, 251-first silo inlet, 252-cone bucket, 253-fixing part, 31-first conveying pipe, 311-gate valve, 312-first rotary valve, 313- The first flange, 32-loss-in-weight scale, 321-first flexible connector, 322-second silo, 323-second silo mixer, 324-double screw feeder, 33-second conveying pipe, 331-second flexible connector, 332-third conveying pipe, 333-second rotary valve, 334-second flange, 41-grinder, 42-fan, 421-square-to-round pipe fitting, 422-fourth conveying pipe, 43-classifying wheel. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0030] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0031] See also Figure 1 to Figure 5 The present invention discloses a baking soda grinding and conveying device for treating hazardous waste incineration flue gas, comprising a support frame 10, a feeding unit 20, a weighing unit 30 and a grinding unit 40. The support frame 10 provides support for the entire device.

[0032] The loading unit 20 includes a guide rail 23, an electric hoist 21 and a ton bag 22. The guide rail 23 is fixed to the top of the support frame 10, and the electric hoist 21 is hoisted at the lower end of the guide rail 23 and can move along the guide rail 23; baffles are provided at both ends of the guide rail 23 to prevent the electric hoist 21 from falling off the guide rail when the operation is improper. The ton bag 22 is suspended at the bottom of the electric hoist 21 and moves with the electric hoist 21; a lifting frame 24 is also provided between the ton bag 22 and the electric hoist 21, which can make the ton bag more stable during movement.

[0033] A first silo 25 is provided below the ton bag 22, which is fixed to the H-shaped steel frame 11 of the support frame 10 by a fixing piece 253; the first silo 25 is cylindrical, with a cavity inside, and the outer diameter of the first silo 25 is 150 cm; a first silo inlet 251 is provided at the top of the first silo 25, and the first silo inlet 251 is circular and has a diameter of 30 cm; the top of the first silo 25 is an inclined surface inclined toward the first silo inlet 251 to prevent baking soda from leaking out when it is poured from the ton bag 22 into the first silo 25. A cone hopper 252 is provided at the bottom of the first silo 25, and the outer diameter of the top of the cone hopper 252 is the same as the outer diameter of the first silo 25, and the outer wall of the cone hopper 252 is at an angle of 65° with the horizontal plane, so that baking soda can fall smoothly.

[0034] The weighing unit 30 is arranged at the lower end of the cone bucket 252, and includes a first conveying pipe 31, a second silo 322 and a weight loss scale 32. The top of the first conveying pipe 31 is connected to the bottom of the cone bucket 252, and the bottom is connected to the feed port of the second silo 322. A gate valve 311 is also arranged at the top of the first conveying pipe 31, and a first rotary valve 312 is arranged at the bottom of the gate valve 311. The first conveying pipe 31 is connected to the cone bucket 252 through the gate valve 311 and the first rotary valve 312. The opening and closing of the gate valve and the first rotary valve can control whether the baking soda in the first silo is poured into the second silo. The gate valve 311 in this embodiment can be a manual or electric gate valve.

[0035] A first flange 313 is provided between the first rotary valve 312 and the gate valve 311 for connecting and fixing the first rotary valve and the gate valve; a first flange 313 is also provided at the bottom of the first rotary valve 312 for connecting the first rotary valve and the first delivery pipe 31.

[0036] A first flexible connector 321 is provided between the first conveying pipe 31 and the feed port of the second silo 322. The first conveying pipe 31 is connected to the feed port of the second silo 322 via the first flexible connector 321. In this embodiment, the first flexible connector 321 is a tube made of silicone to ensure the accuracy of the loss-in-weight scale 32.

[0037] A second silo mixer 323 is provided next to the feed port of the second silo 322 to regularly stir the baking soda in the second silo 322 to prevent the baking soda from caking. A double screw feeder 324 is also provided between the second silo 322 and the weight loss scale 32 to control the amount of baking soda discharged according to the amount of acidic gas in the exhaust flue gas. The motor of the double screw feeder 324 is frequency-controlled and can automatically adjust the motor speed according to the input level of baking soda, making the equipment more energy-saving.

[0038] The discharge port of the second silo 322 is connected to the second conveying pipe 33, and the baking soda is conveyed to the third conveying pipe 332 through the second conveying pipe 33, and then enters the grinding unit 40. A second flexible connector 331 is provided between the second conveying pipe 33 and the third conveying pipe 332 to alleviate the mutual vibration between the second conveying pipe and the third conveying pipe, so as to ensure that the baking soda is completely conveyed without leakage.

[0039] A second rotary valve 333 is also provided at one end of the third delivery pipe 332 near the second delivery pipe 33, and its opening and closing can control whether baking soda is delivered to the grinding unit 40. Second flanges 334 are provided before and after the second rotary valve 333 for fastening the second rotary valve 333 to the third delivery pipe 332.

[0040] The grinding unit 40 includes a grinder 41 and a fan 42. The grinder 41 is connected to the third conveying pipe 332, grinds the baking soda conveyed by the weighing unit 30 to a particle size below 20 um, and blows the ground baking soda into the fourth conveying pipe 422 through the fan 42. The baking soda reaches the dry reaction tower through the fourth conveying pipe 422 to adsorb and remove the acidic gas after the incineration of hazardous waste.

[0041] A classifying wheel 43 is provided between the grinder 41 and the fan 42. The baking soda moves to the classifying area with the rising air flow under the suction force of the fan 42. The coarse and fine materials are separated under the strong centrifugal force generated by the high-speed rotating classifying turbine. The baking soda powder with a particle size of no more than 20um enters the fourth conveying pipe 422 through the classifying wheel 43, and the coarse particles fall into the grinding area for further grinding.

[0042] A square-to-round pipe fitting 421 is provided between the outlet of the fan 42 and the inlet of the fourth conveying pipe 422, one end of which has a square interface and the other end of which has a round interface. The outlet of the fan 42 and the inlet of the fourth conveying pipe 422 are connected through it to ensure the complete delivery of the baking soda powder.

[0043] The baking soda grinding and conveying device of the present embodiment adopts a double silo structure and the control of a double screw feeder, can evenly discharge the baking soda according to the required amount, and can automatically adjust according to real-time feedback, which can effectively prevent the baking soda from becoming caking; at the same time, the baking soda is ground to less than 20um by a grinder and then conveyed to the dry reaction tower, which can better neutralize the acidic gas, purify the flue gas better, and has a wider range of applications.

[0044] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A baking soda grinding and conveying device for treating hazardous waste incineration flue gas, comprising a support frame (10), a feeding unit (20), a weighing unit (30) and a grinding unit (40), characterized in that: The support frame (10) provides support for the entire device; The loading unit (20) comprises a guide rail (23), an electric hoist (21) and a ton bag (22); the guide rail (23) is fixed to the top of the support frame (10), the electric hoist (21) is suspended at the lower end of the guide rail (23) and can move along the guide rail (23); the ton bag (22) is suspended at the bottom of the electric hoist (21); A first silo (25) is provided below the ton bag (22), and is fixed to the H-shaped steel frame (11) of the support frame (10) via a fixing member (253); a first silo inlet (251) is provided at the top of the first silo (25), and a cone bucket (252) is provided at the bottom of the first silo (25); The weighing unit (30) is arranged at the lower end of the cone bucket (252), and comprises a first conveying pipe (31), a second silo (322) and a loss-in-weight scale (32); the top of the first conveying pipe (31) is connected to the bottom of the cone bucket (252), and the bottom is connected to the feed port of the second silo (322); A first flexible connector (321) is provided between the first conveying pipe (31) and the feed port of the second silo (322), and the first conveying pipe (31) is connected to the feed port of the second silo (322) via the first flexible connector (321); a double screw feeder (324) is provided between the second silo (322) and the loss-in-weight scale (32); The discharge port of the second silo (322) is in communication with the second conveying pipe (33), and the baking soda is conveyed to the third conveying pipe (332) through the second conveying pipe (33) and then enters the grinding unit (40); The grinding unit (40) comprises a grinder (41) and a fan (42); the grinder (41) is connected to the third conveying pipe (332) to grind the baking soda conveyed by the weighing unit (30), and then blows the ground baking soda into the fourth conveying pipe (422) through the fan (42); The first delivery pipe (31) is further provided with a gate valve (311) at the top end, and a first rotary valve (312) is provided at the bottom end of the gate valve (311). The first delivery pipe (31) is connected to the cone bucket (252) via the gate valve (311) and the first rotary valve (312); The third delivery pipe (332) is also provided with a second rotary valve (333) at one end close to the second delivery pipe (33); Second flanges (334) are provided at the front and rear of the second rotary valve (333).

2. The baking soda grinding and conveying device for hazardous waste incineration flue gas treatment according to claim 1 is characterized in that: Baffles are provided at both ends of the guide rail (23) to prevent the electric hoist (21) from falling off the guide rail when improperly operated.

3. The baking soda grinding and conveying device for hazardous waste incineration flue gas treatment according to claim 2 is characterized in that: A lifting frame (24) is also provided between the ton bag (22) and the electric hoist (21).

4. The baking soda grinding and conveying device for hazardous waste incineration flue gas treatment according to claim 1 is characterized in that: The first material bin (25) is cylindrical and has a cavity inside; The top of the first silo (25) is a slope that slopes toward the first silo inlet (251); The outer diameter of the first silo (25) is 150 cm; the first silo inlet (251) is circular and has a diameter of 30 cm; The outer diameter of the top of the cone bucket (252) is the same as the outer diameter of the first silo (25), and the outer wall of the cone bucket (252) is 65 degrees to the horizontal plane. o horn.

5. The baking soda grinding and conveying device for hazardous waste incineration flue gas treatment according to claim 1 is characterized in that: A first flange (313) is provided between the first rotary valve (312) and the gate valve (311), and a first flange (313) is also provided at the bottom of the first rotary valve (312).

6. The baking soda grinding and conveying device for hazardous waste incineration flue gas treatment according to claim 1 is characterized in that: The first flexible connector (321) is a tube made of silicone; and a second silo mixer (323) is provided next to the feed inlet of the second silo (322).

7. The baking soda grinding and conveying device for hazardous waste incineration flue gas treatment according to claim 1 is characterized in that: A second flexible connector (331) is provided between the second delivery pipe (33) and the third delivery pipe (332).

8. The baking soda grinding and conveying device for hazardous waste incineration flue gas treatment according to claim 1 is characterized in that: A classifying wheel (43) is provided between the grinder (41) and the fan (42); A square-to-round pipe fitting (421) is also provided between the outlet of the fan (42) and the inlet of the fourth delivery pipe (422).

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