Waste gas purification and recovery equipment for sludge degassing treatment

Abstract

The utility model discloses waste gas purification and recovery equipment for sludge degassing treatment, which relates to the field of sludge degassing treatment, aims to solve the problem that the existing sludge tail gas treatment is inconvenient, and adopts the technical scheme that the waste gas purification and recovery equipment comprises a base, a waste gas combustion box is fixed on the base, and the bottom of the waste gas combustion box is connected with a waste gas inlet pipe; the side face of the waste gas combustion box is connected with a first connecting pipe, the end, away from the waste gas combustion box, of the first connecting pipe is connected with a filter box, a saturated sodium bicarbonate solution is contained in the filter box, the first connecting pipe extends to the bottom of the filter box, and the position, close to the bottom of the filter box, of the first connecting pipe is rotationally connected with a stirring piece. A first electromagnetic valve is fixed outside the gas collecting pipe; a liquid discharging pipe is connected to the bottom of the filter box; a recycling box is connected to the end, far away from the filter box, of the liquid discharging pipe; and a guiding-out pipe is connected to the side face of the recycling box.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge degassing treatment, in particular to sludge degassing treatment waste gas purification and recovery equipment. Background Art

[0002] The amount of urban sewage generated is currently increasing dramatically. This increased capacity for domestic sewage treatment has also increased the pressure on sludge disposal. Furthermore, sludge takes a long time to degrade naturally, and if the previous sludge does not degrade, new sludge will accumulate. Furthermore, sludge pollutes the land and surrounding environment. Over time, this will have a serious impact on the city's ecological environment, thereby restricting urban development. Existing urban sewage treatment plants primarily use sludge reduction technology to reduce sludge volume. However, existing sludge treatment is inefficient and consumes a lot of energy, resulting in high costs. Furthermore, existing sludge treatment technology does not treat the exhaust gas, which pollutes the environment.

[0003] A "stirring and drying device" is disclosed in the prior art, as shown in Chinese Patent Application No. 201310464982.5 and Publication No. CN103508649B. The present invention relates to a stirring and drying device comprising a tank body with a heating interlayer on its sidewall. The device is characterized in that the tank body is provided with a main shaft and a rotating drum linked to the main shaft via an intermediate rod. The outer periphery of the rotating drum is provided with several layers of spiral conveyor belts of equal pitch. A material drying channel is provided between the spiral conveyor belts and the sidewall of the tank body. The present invention has a simple structure, fast stirring, and efficient drying. It can effectively improve the efficiency and effectiveness of sludge drying treatment, while also ensuring the reliability of equipment operation, and has broad market prospects.

[0004] However, the above-mentioned existing technology does not have a relevant tail gas purification treatment structure. Therefore, in the existing sludge treatment process, since it contains a large amount of hydrogen sulfide, sulfur dioxide and carbon dioxide gas, direct discharge will pollute the environment, and it has a prospect of being utilized. Therefore, a device that can treat and collect waste gas is needed. Utility Model Content

[0005] The utility model aims to provide a sludge degassing waste gas purification and recovery device which can separate the internal gas of waste gas and collect and purify it.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A sludge degassing waste gas purification and recovery device includes a base, a waste gas combustion box is fixed on the base, a waste gas inlet pipe is connected to the bottom of the waste gas combustion box, a first connecting pipe is connected to the side of the waste gas combustion box, the first connecting pipe is connected to a filter box away from the end of the waste gas combustion box, a saturated sodium bicarbonate solution is contained in the filter box, the first connecting pipe extends to the bottom of the filter box, the first connecting pipe is rotatably connected to a stirring member near the bottom of the filter box, a second connecting pipe is connected to the side of the filter box, a gas collecting pipe is fixed to the flange of the second connecting pipe away from the end of the filter box, a first solenoid valve is fixed to the outside of the gas collecting pipe, a drain pipe is connected to the bottom of the filter box, the drain pipe is connected to a recovery box away from the end of the filter box, a ball valve is fixed to the outside of the drain pipe, and a guide pipe is connected to the side of the recovery box.

[0008] Furthermore, an oxygen inlet pipe is connected to the top of the waste gas combustion box, a second solenoid valve is fixed to the outside of the oxygen inlet pipe, and an igniter extending into the interior of the waste gas combustion box is fixed to the side of the waste gas combustion box close to the base end.

[0009] By adopting the above technical solution, since the exhaust gas contains hydrogen sulfide, after combustion, two main gases exist in the exhaust gas, namely sulfur dioxide and carbon dioxide. The remaining two gases enter the filter box along the first connecting pipe, reducing the presence of different types of gases in the exhaust gas and improving the subsequent processing efficiency.

[0010] Furthermore, a connecting head is fixed on the side of the first connecting pipe located inside the filter box, a movable pipe is rotatably connected to the outside of the connecting head, the interior of the movable pipe is connected to the interior of the first connecting pipe, and a plurality of exhaust holes are provided on the side of the movable pipe.

[0011] Furthermore, the stirring member includes the movable tube and a support frame fixed inside the movable tube, a rotating shaft is fixed at the center of the support frame, the rotating shaft enters the first connecting tube along the connecting head and extends along the side of the first connecting tube, a first motor is fixed to the protruding end of the rotating shaft, the first motor is screwed on the side of the filter box, the movable tube is sealed away from the connecting head end, and a number of stirring rods are also fixed on the side of the movable tube.

[0012] By adopting the above technical solution, under the drive of the first motor, the rotating shaft drives the support frame to rotate, and then the support frame and the movable tube rotate synchronously, stirring the saturated sodium bicarbonate solution inside the filter box, increasing the contact area between the discharged gas on the side of the movable tube and the saturated sodium bicarbonate solution, and thus improving the reaction efficiency of the saturated sodium bicarbonate solution and the sulfur dioxide gas in the discharged gas.

[0013] Furthermore, a liquid inlet pipe is connected to the top of the filter box.

[0014] By adopting the above technical solution, the addition of saturated sodium bicarbonate solution is facilitated.

[0015] Furthermore, a rotating rod is rotatably connected inside the exhaust gas combustion box, a plurality of curved rods are fixed on the side of the rotating rod, the rotating rod extends toward the bottom of the exhaust gas combustion box, a second motor is fixed to the protruding end of the rotating rod, and the second motor is fixed on the base.

[0016] By adopting the above technical solution, the second motor can drive the rotating rod to rotate, and the rotating rod drives the curved rod on its side to rotate inside the exhaust gas combustion box, so that the incoming exhaust gas and oxygen are fully mixed, increasing the contact area between the two and improving the combustion efficiency.

[0017] In summary, the beneficial technical effects of the present invention are:

[0018] 1. The exhaust gas combustion box is used. After combustion, there are two main gases in the exhaust gas, sulfur dioxide and carbon dioxide. The remaining two gases enter the filter box along the first connecting pipe, reducing the presence of different types of gases in the exhaust gas and improving the subsequent treatment efficiency;

[0019] 2. A filter box is used to absorb sulfur dioxide gas. The remaining carbon dioxide gas enters the gas collection pipe through the second connecting pipe and then enters the gas collection equipment connected to the gas collection pipe for collection. The liquid after the reaction is collected through the drain pipe, completing the separation and collection of the gas, facilitating recycling and improving reuse efficiency.

[0020] 3. A rotatable movable tube is used to extract the gas. After the gas enters the filter box, the movable tube rotates to extract the gas. While the gas is being extracted, the solution inside is stirred to increase the contact area between the gas and the solution and improve the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic structural diagram of a sludge degassing waste gas purification and recovery device according to this embodiment;

[0023] Figure 2 This is a sludge degassing waste gas purification and recovery equipment Figure 1 A schematic internal cross-sectional view of

[0024] Figure 3 This is a schematic diagram of the interior of a filter box of a sludge degassing waste gas purification and recovery device according to this embodiment;

[0025] Figure 4 This is a sludge degassing waste gas purification and recovery equipment Figure 3 Enlarged schematic diagram of point A in the middle.

[0026] In the figure, 1. base; 2. exhaust gas combustion box; 3. exhaust gas inlet pipe; 4. first connecting pipe; 5. filter box; 6. second connecting pipe; 7. gas collecting pipe; 8. first solenoid valve; 9. drain pipe; 10. recovery box; 11. ball valve; 12. outlet pipe; 13. oxygen inlet pipe; 14. second solenoid valve; 15. igniter; 16. connector; 17. movable pipe; 18. exhaust hole; 19. support frame; 20. rotating shaft; 21. first motor; 22. stirring rod; 23. liquid inlet pipe; 24. rotating rod; 25. curved rod; 26. second motor. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-4 The utility model provides a technical solution: a sludge degassing waste gas purification and recovery equipment, including a base 1, a waste gas combustion box 2 is fixed on the base 1, and the bottom of the waste gas combustion box 2 is connected to a waste gas inlet pipe 3, the side of the waste gas combustion box 2 is connected to a first connecting pipe 4, the first connecting pipe 4 is connected to a filter box 5 away from the end of the waste gas combustion box 2, and the filter box 5 is filled with saturated sodium bicarbonate solution. The first connecting pipe 4 extends to the bottom of the filter box 5, and the first connecting pipe 4 is rotatably connected to a stirring member near the bottom of the filter box 5. The side of the filter box 5 is connected to a second connecting pipe 6, and the flange of the second connecting pipe 6 is fixed to a gas collecting pipe 7 away from the end of the filter box 5. A first solenoid valve 8 is fixed to the outside of the gas collecting pipe 7, the bottom of the filter box 5 is connected to a drain pipe 9, and the end of the drain pipe 9 away from the filter box 5 is connected to a recovery box 10, a ball valve 11 is fixed to the outside of the drain pipe 9, and the side of the recovery box 10 is connected to a guide pipe 12.

[0030] Among them, an oxygen inlet pipe 13 is connected to the top of the exhaust gas combustion box 2, a second solenoid valve 14 is fixed to the outside of the oxygen inlet pipe 13, and an igniter 15 extending into the interior of the exhaust gas combustion box 2 is fixed to the side of the exhaust gas combustion box 2 close to the base 1.

[0031] Then, when the exhaust gas enters the exhaust gas combustion box 2, the second solenoid valve 14 is opened and the igniter 15 is opened at the same time, and the internal exhaust gas is ignited while oxygen is introduced into the exhaust gas combustion box 2. Since the exhaust gas contains hydrogen sulfide, after combustion, there are two main gases in the exhaust gas, namely sulfur dioxide and carbon dioxide. The remaining two gases enter the filter box 5 along the first connecting pipe 4.

[0032] At the same time, a connector 16 is fixed on the side of the first connecting pipe 4 located inside the filter box 5. A movable pipe 17 is rotatably connected to the outside of the connector 16. The inside of the movable pipe 17 is connected to the inside of the first connecting pipe 4. A number of exhaust holes 18 are provided on the side of the movable pipe 17.

[0033] The stirring member includes the movable tube 17 and a support frame 19 fixed inside the movable tube 17. A rotating shaft 20 is fixed at the center of the support frame 19. The rotating shaft 20 enters the first connecting tube 4 along the connecting head 16 and extends along the side of the first connecting tube 4. A first motor 21 is fixed to the protruding end of the rotating shaft 20. The first motor 21 is screwed to the side of the filter box 5. The end of the movable tube 17 away from the connecting head 16 is sealed. A number of stirring rods 22 are also fixed to the side of the movable tube 17.

[0034] A liquid inlet pipe 23 is connected to the top of the filter box 5 .

[0035] Then, the saturated sodium bicarbonate solution inside the filter box 5 is added through the liquid inlet pipe 23, wherein the gas discharged from the exhaust gas combustion box 2 enters the filter box 5 along the first connecting pipe 4. At the same time, in this embodiment, the added saturated sodium bicarbonate solution immerses the movable tube 17, and the above-mentioned sulfur dioxide and carbon dioxide discharged along the first connecting pipe 4 through the exhaust hole 18 on the side of the movable tube 17 are discharged into the interior of the saturated sodium bicarbonate solution. The sulfur dioxide gas therein reacts chemically with the saturated sodium bicarbonate solution, while the carbon dioxide gas is insoluble in the saturated sodium bicarbonate solution and is therefore directly discharged along the top of the filter box 5.

[0036] At the same time, when gas is discharged from the side of the movable tube 17, the first motor 21 can be turned on. The first motor 21 drives the rotating shaft 20 to rotate. When the rotating shaft 20 rotates, the rotating shaft 20 drives the support frame 19 to rotate, and then the support frame 19 and the movable tube 17 rotate synchronously, stirring the saturated sodium bicarbonate solution inside the filter box 5, increasing the contact area between the gas discharged from the side of the movable tube 17 and the saturated sodium bicarbonate solution, and thus improving the reaction efficiency of the saturated sodium bicarbonate solution and the sulfur dioxide gas in the discharged gas.

[0037] Furthermore, a rotating rod 24 is rotatably connected inside the exhaust gas combustion box 2, and a number of curved rods 25 are fixed on the side of the rotating rod 24. The rotating rod 24 extends toward the bottom of the exhaust gas combustion box 2, and a second motor 26 is fixed to the protruding end of the rotating rod 24. The second motor 26 is fixed on the base 1. After the second motor 26 is turned on, the second motor 26 can drive the rotating rod 24 to rotate, and the rotating rod 24 drives the curved rods 25 on its side to rotate inside the exhaust gas combustion box 2, so that the incoming exhaust gas and oxygen are fully mixed, the contact area between the two is increased, and the combustion efficiency is improved.

[0038] The working principle of the present invention is as follows: the exhaust gas enters the exhaust gas combustion box 2 along the exhaust gas inlet pipe 3, and the exhaust gas is burned by adding oxygen. Since the exhaust gas mainly contains hydrogen sulfide, sulfur dioxide and carbon dioxide gas, the internal hydrogen sulfide is converted into sulfur dioxide gas by combustion treatment, so that the gas after being discharged from the exhaust gas combustion box 2 is mainly sulfur dioxide and carbon dioxide gas. After the two enter the filter box 5 through the first connecting pipe 4, the sulfur dioxide gas is absorbed by contacting with the saturated sodium bicarbonate solution inside it, and the remaining carbon dioxide gas enters the gas collecting pipe 7 through the second connecting pipe 6, and then enters the gas collecting equipment connected to the gas collecting pipe 7 for collection. The reacted liquid is collected through the drain pipe 9. In this embodiment, the opening and closing of each pipeline is controlled by a solenoid valve or a ball valve 11.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sludge degassing waste gas purification and recovery device, comprising a base (1), a waste gas combustion box (2) fixed on the base (1), a waste gas inlet pipe (3) connected to the bottom of the waste gas combustion box (2), characterized in that: The side of the waste gas combustion box (2) is connected to a first connecting pipe (4), the end of the first connecting pipe (4) away from the waste gas combustion box (2) is connected to a filter box (5), the inside of the filter box (5) is filled with a saturated sodium bicarbonate solution, the first connecting pipe (4) extends to the bottom of the filter box (5), the first connecting pipe (4) is rotatably connected to a stirring member near the bottom of the filter box (5), the side of the filter box (5) is connected to a second connecting pipe (6), the end of the second connecting pipe (6) away from the filter box (5) is fixed with a gas collection pipe (7), the outside of the gas collection pipe (7) is fixed with a first solenoid valve (8), the bottom of the filter box (5) is connected to a drain pipe (9), the end of the drain pipe (9) away from the filter box (5) is connected to a recovery box (10), the outside of the drain pipe (9) is fixed with a ball valve (11), and the side of the recovery box (10) is connected to a guide pipe (12).

2. The sludge degassing waste gas purification and recovery equipment according to claim 1, characterized in that: The top of the waste gas combustion box (2) is connected to an oxygen inlet pipe (13), a second solenoid valve (14) is fixed to the outside of the oxygen inlet pipe (13), and an igniter (15) is fixed to the side surface of the waste gas combustion box (2) close to the base (1) and extends into the interior of the waste gas combustion box (2).

3. The sludge degassing waste gas purification and recovery equipment according to claim 1, characterized in that: The first connecting pipe (4) is located inside the filter box (5) and has a connecting head (16) fixed on its side. The outside of the connecting head (16) is rotatably connected to a movable pipe (17). The inside of the movable pipe (17) is communicated with the inside of the first connecting pipe (4). A plurality of exhaust holes (18) are provided on the side of the movable pipe (17).

4. The sludge degassing waste gas purification and recovery equipment according to claim 3, characterized in that: The stirring member comprises the movable tube (17) and a support frame (19) fixed inside the movable tube (17); a rotating shaft (20) is fixed at the center of the support frame (19); the rotating shaft (20) enters the first connecting tube (4) along the connecting head (16) and extends along the side of the first connecting tube (4); a first motor (21) is fixed to the extended end of the rotating shaft (20); the first motor (21) is screwed to the side of the filter box (5); the end of the movable tube (17) away from the connecting head (16) is sealed, and a plurality of stirring rods (22) are also fixed to the side of the movable tube (17).

5. The sludge degassing waste gas purification and recovery equipment according to claim 1, characterized in that: The top of the filter box (5) is connected to a liquid inlet pipe (23).

6. The sludge degassing waste gas purification and recovery equipment according to claim 1, characterized in that: The exhaust gas combustion box (2) is internally connected to a rotating rod (24), a plurality of curved rods (25) are fixed to the side of the rotating rod (24), the rotating rod (24) extends toward the bottom of the exhaust gas combustion box (2), a second motor (26) is fixed to the extended end of the rotating rod (24), and the second motor (26) is fixed to the base (1).

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