Wastewater pipeline pressurization system

Abstract

The utility model relates to a waste water pipeline pressurization system, which belongs to the field of aluminum electrolysis production, and is characterized in that a clean flue gas outlet, a slurry inlet, a raw flue gas inlet, an oxidation air inlet, a gypsum liquid outlet and a slurry outlet are sequentially formed in an absorption tower from top to bottom, and a plurality of slurry nozzles are arranged on the plane of the slurry inlet in the absorption tower; the slurry nozzle is communicated with the bottom of the absorption tower through a pipeline I; a plurality of oxidation air nozzles are arranged on a plane where an oxidation air inlet in the absorption tower is located; the gypsum liquid outlet is communicated with the swirler through a pipeline II, the top of the swirler is communicated with the waste water tank through a pipeline, the vacuum belt dehydrator is located at the bottom of the swirler, the bottom of the swirler is communicated with the top of the waste water tank through a pipeline, and a gypsum warehouse is arranged at the bottom of the discharging side of the vacuum belt dehydrator; the bottom of the wastewater tank is connected with a pipeline III; a wastewater pump and a wastewater pipeline booster pump are sequentially arranged on the pipeline III; the problems that waste water is difficult to discharge and overflow exists due to the fact that a traditional system is long in waste water discharge pipeline are solved.

Description

Technical Field

[0001] The utility model relates to a wastewater pipeline pressurization system, belonging to the field of aluminum electrolysis production. Background Technique

[0002] The electrolytic cell is the core equipment of aluminum electrolysis production. Its technical development has experienced the transformation from self-baking cells to pre-baked cells. Pre-baked cells have the advantages of large capacity, mature technology, high efficiency, low cost, etc., and are the mainstream technology widely used at present. In addition, there is also a new cryolite system low-temperature aluminum electrolysis technology, which can improve the current efficiency, reduce energy consumption, and extend the service life of the electrolytic cell, etc.

[0003] According to the industrial water supply pipeline intelligent compensation enhanced pressurization system disclosed in Chinese invention patent CN106020042A, the present invention discloses an industrial water supply pipeline intelligent compensation enhanced pressurization system, including a control chip U1, a capacitor C3, a capacitor C4, a booster pump drive circuit connected to the control chip U1, a power input circuit connected to the control chip U1, a signal processing input circuit connected to both the control chip U1 and the power input circuit, a signal compensation circuit connected to both the power input circuit and the signal processing input circuit, and a signal enhancement circuit connected to both the control chip U1 and the signal processing input circuit. The present invention provides an industrial water supply pipeline intelligent compensation enhanced pressurization system, which can quickly respond to the situation of insufficient water pressure and can achieve the effect of real-time pressurization, greatly reducing the impact of insufficient water pressure on the normal production of enterprises.

[0004] In traditional aluminum electrolysis production equipment, due to the long pipeline for wastewater discharge in the flue gas desulfurization system, the wastewater discharge is difficult, and the wastewater discharge speed is too slow. When the desulfurization system deslagging, a part of the wastewater overflows into the absorption tower. Long-term overflow will cause the increase of chloride ions and fluoride ions in the slurry in the absorption tower, resulting in the poisoning of the desulfurization slurry and the paralysis of the desulfurization system, and it cannot operate normally. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is that in the traditional system, due to the long pipeline for wastewater discharge, the wastewater discharge is difficult and there is an overflow phenomenon.

[0006] A wastewater pipeline pressurization system described in the utility model includes an absorption tower, a hydrocyclone, a vacuum belt filter, a wastewater tank and a gypsum warehouse;

[0007] The absorption tower is successively provided with a clean flue gas outlet, a slurry inlet, a raw flue gas inlet, an oxidation air inlet, a gypsum liquid outlet and a slurry outlet from top to bottom. A plurality of slurry spray nozzles are arranged on the plane where the slurry inlet in the absorption tower is located. The slurry spray nozzles are communicated with the bottom of the absorption tower through pipeline Ⅰ. A plurality of oxidation air spray nozzles are arranged on the plane where the oxidation air inlet in the absorption tower is located;

[0008] The gypsum liquid outlet is connected to a hydrocyclone through Pipeline II. The top of the hydrocyclone is connected to a wastewater tank through a pipeline. The vacuum belt filter press is located at the bottom of the hydrocyclone. The bottom of the hydrocyclone is connected to the top of the wastewater tank through a pipeline. A gypsum bin is provided at the bottom of the discharge side of the vacuum belt filter press.

[0009] A Pipeline III is connected to the bottom of the wastewater tank. A wastewater pump and a wastewater pipeline booster pump are successively provided on Pipeline III.

[0010] The absorption tower provides a structure for treating and absorbing carbon dioxide in flue gas. The hydrocyclone uses centrifugal force to separate gypsum from wastewater in the gypsum liquid containing wastewater. The vacuum belt filter press is used to further dewater the gypsum filtered by the hydrocyclone. The wastewater tank is used to store the wastewater filtered by the hydrocyclone and the vacuum belt filter press. The gypsum bin is used to store the gypsum transported by the vacuum belt filter press.

[0011] The raw flue gas enters the absorption tower through the raw flue gas inlet. The oxidation air enters the absorption tower through the oxidation air inlet. The slurry mixture in the absorption tower passes through the slurry outlet. The circulating pump on Pipeline I enters the slurry spray head through the slurry inlet. The sprayed slurry is mixed with the raw flue gas to complete the desulfurization operation. The gypsum liquid containing sulfur dioxide enters the hydrocyclone through the gypsum liquid outlet via the gypsum discharge pump. The cycled wastewater enters the wastewater tank. The cycled gypsum enters the gypsum bin after being separated again by the vacuum belt filter press. The secondary filtered wastewater enters the wastewater tank through a pipeline. The wastewater pump and the wastewater pipeline booster pump provided on Pipeline III at the bottom of the wastewater tank can avoid the difficulty of wastewater discharge caused by a long pipeline and prevent the overflow phenomenon.

[0012] Furthermore, a circulating pump is provided on Pipeline I.

[0013] The circulating pump is used to accelerate the slurry circulation.

[0014] Furthermore, a gypsum discharge pump is provided on Pipeline II.

[0015] The gypsum discharge pump is used to accelerate the gypsum liquid circulation.

[0016] Furthermore, a transport vehicle berth is provided at the bottom of the gypsum bin.

[0017] The transport vehicle can be used to transport gypsum.

[0018] Furthermore, a conveyor belt is provided between the vacuum belt filter press and the gypsum bin, and the conveyor belt is arranged obliquely.

[0019] The conveyor belt can perform a third filtration on the gypsum, and the filtered gypsum enters the gypsum bin.

[0020] Furthermore, both the slurry spray head and the oxidation air spray head are pipe-shaped spray heads.

[0021] The pipe-shaped nozzle improves the spray coverage. The design of the pipe-shaped nozzle can generate a wider spray coverage, making it particularly suitable for large-area surface treatment and spraying operations, such as garden irrigation, road dust removal, etc.

[0022] Compared with the prior art, the beneficial effects of the present utility model are:

[0023] A wastewater pipeline pressurization system described in the present utility model provides a structure for treating and absorbing carbon dioxide in flue gas in an absorption tower. A cyclone uses centrifugal force to separate gypsum from wastewater in the gypsum liquid containing wastewater entering. A vacuum belt filter is used to further dewater the gypsum filtered by the cyclone. A wastewater tank is used to store the wastewater filtered by the cyclone and the vacuum belt filter. A gypsum bin is used to store the gypsum transported by the vacuum belt filter; the raw flue gas enters the absorption tower through the raw flue gas inlet, the oxidation air enters the absorption tower through the oxidation air inlet, the slurry mixture in the absorption tower passes through the slurry outlet, and the circulating pump on pipeline I enters the slurry spray head through the slurry inlet. The sprayed slurry is mixed with the raw flue gas to complete the desulfurization operation. The gypsum liquid containing sulfur dioxide enters the cyclone through the gypsum liquid outlet via the gypsum discharge pump. The wastewater after swirling enters the wastewater tank, and the gypsum after swirling and further separated by the vacuum belt filter enters the gypsum bin. The wastewater after secondary filtration enters the wastewater tank through the pipeline. The wastewater pump and the wastewater pipeline booster pump provided on pipeline III at the bottom of the wastewater tank can avoid the difficulty of wastewater discharge caused by a long pipeline and avoid the overflow phenomenon; it solves the problems of difficult wastewater discharge due to a long pipeline and the overflow phenomenon in the traditional system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0025] In the figure: 1. Absorption tower; 2. Cyclone; 3. Vacuum belt filter; 4. Wastewater tank; 5. Gypsum bin; 6. Slurry spray head; 7. Oxidation air spray head; 8. Wastewater pump; 9. Wastewater pipeline booster pump; 10. Circulating pump; 11. Gypsum discharge pump;

[0026] 101, Clean flue gas outlet; 102, Slurry inlet; 103, Raw flue gas inlet; 104, Oxidation air inlet; 105, Gypsum liquid outlet; 106, Slurry outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Embodiment 1

[0028] As Figure 1 shown, a wastewater pipeline pressurization system described in the present utility model includes an absorption tower 1, a cyclone 2, a vacuum belt filter 3, a wastewater tank 4 and a gypsum bin 5;

[0029] The absorption tower 1 is successively provided with a clean flue gas outlet 101, a slurry inlet 102, an original flue gas inlet 103, an oxidation air inlet 104, a gypsum liquid outlet 105 and a slurry outlet 106 from top to bottom. A plurality of slurry spray nozzles 6 are arranged on the plane where the slurry inlet 102 is located in the absorption tower 1. The slurry spray nozzles 6 are communicated with the bottom of the absorption tower 1 through pipeline I. A plurality of oxidation air spray nozzles 7 are arranged on the plane where the oxidation air inlet 104 is located in the absorption tower 1;

[0030] The gypsum liquid outlet 105 is communicated with the hydrocyclone 2 through pipeline II. The top of the hydrocyclone 2 is communicated with the waste water tank 4 through a pipeline. The vacuum belt filter press 3 is located at the bottom of the hydrocyclone 2. The bottom of the hydrocyclone 2 is communicated with the top of the waste water tank 4 through a pipeline. A gypsum bin 5 is arranged at the bottom of the discharge side of the vacuum belt filter press 3;

[0031] A pipeline III is connected to the bottom of the waste water tank 4. A waste water pump 8 and a waste water pipeline booster pump 9 are successively arranged on the pipeline III.

[0032] The absorption tower 1 provides a structure for treating and absorbing carbon dioxide in the flue gas. The hydrocyclone 2 uses centrifugal force to separate gypsum from the waste water in the gypsum liquid containing waste water entering it. The vacuum belt filter press 3 is used for further dewatering the gypsum filtered by the hydrocyclone 2. The waste water tank 4 is used for storing the waste water filtered by the hydrocyclone 2 and the vacuum belt filter press 3. The gypsum bin 5 is used for storing the gypsum transported by the vacuum belt filter press 3;

[0033] The original flue gas enters the absorption tower 1 through the original flue gas inlet 103, and the oxidation air enters the absorption tower 1 through the oxidation air inlet 104. The slurry mixture in the absorption tower 1 passes through the slurry outlet 106, and the circulating pump 10 on the pipeline I enters the slurry spray nozzles 6 through the slurry inlet 102. The sprayed slurry is mixed with the original flue gas to complete the desulfurization operation. The gypsum liquid containing sulfur dioxide enters the hydrocyclone 2 through the gypsum liquid outlet 105 via the gypsum discharge pump 11. The waste water after cyclone enters the waste water tank 4. The gypsum after being separated again by the vacuum belt filter press 3 enters the gypsum bin 5. The waste water after secondary filtration enters the waste water tank 4 through a pipeline. The waste water pump 8 and the waste water pipeline booster pump 9 arranged on the pipeline III at the bottom of the waste water tank 4 can avoid the difficulty of waste water discharge caused by a long pipeline and avoid the overflow phenomenon.

[0034] As Figure 1 shown, as an optimization, the pipeline I is provided with a circulating pump 10.

[0035] The circulating pump 10 is used to accelerate the slurry circulation.

[0036] As Figure 1 shown, as an optimization, the pipeline II is provided with a gypsum discharge pump 11.

[0037] The gypsum discharge pump 11 is used to accelerate the gypsum liquid circulation.

[0038] As Figure 1 shown, as an optimization, a transport vehicle berth is provided at the bottom of the gypsum storage bin 5.

[0039] The transport vehicle can be used to transport gypsum.

[0040] As Figure 1 shown, as an optimization, a conveyor belt is provided between the vacuum belt filter press 3 and the gypsum storage bin 5, and the conveyor belt is arranged obliquely.

[0041] The conveyor belt can perform a third filtration on the gypsum, and the filtered gypsum enters the gypsum storage bin 5.

[0042] As Figure 1 shown, as an optimization, both the slurry spray nozzle 6 and the oxidation air spray nozzle 7 are pipe-shaped nozzles.

[0043] The pipe-shaped nozzles improve the spray coverage range. The design of the pipe-shaped nozzles can produce a wider spray coverage range, which makes it particularly suitable for large-area surface treatment and spraying operations, such as garden irrigation, road dust removal, etc.

[0044] Working process or working principle:

[0045] The raw flue gas enters the absorption tower 1 through the raw flue gas inlet 103, the oxidation air enters the absorption tower 1 through the oxidation air inlet 104. The slurry mixture in the absorption tower 1 passes through the slurry outlet 106, and the circulating pump 10 on the pipeline Ⅰ enters the slurry spray nozzle 6 through the slurry inlet 102. The sprayed slurry is mixed with the raw flue gas to complete the desulfurization operation. The gypsum liquid containing sulfur dioxide enters the hydrocyclone 2 through the gypsum liquid outlet 105 via the gypsum discharge pump 11. The wastewater after cyclone enters the wastewater tank 4. The gypsum after being separated again by the vacuum belt filter press 3 enters the gypsum storage bin 5. The wastewater after secondary filtration enters the wastewater tank 4 through the pipeline. The wastewater pump 8 and the wastewater pipeline booster pump 9 provided on the pipeline Ⅲ at the bottom of the wastewater tank 4 can avoid the difficulty of wastewater discharge caused by the long pipeline and avoid the overflow phenomenon.

[0046] In the present utility model, the description of the directions and relative position relationships of the structures, such as the descriptions of front, back, left, right, up, and down, does not constitute a limitation to the present utility model, but is only for the convenience of description.

Claims

1. A wastewater pipeline pressure boosting system, characterized in that, It includes an absorption tower (1), a cyclone (2), a vacuum belt filter (3), a waste water tank (4) and a gypsum storage (5); The absorption tower (1) is successively provided with a clean flue gas outlet (101), a slurry inlet (102), a raw flue gas inlet (103), an oxidation air inlet (104), a gypsum liquid outlet (105) and a slurry outlet (106) from top to bottom. A plurality of slurry spray nozzles (6) are arranged on the plane where the slurry inlet (102) is located in the absorption tower (1). The slurry spray nozzles (6) are communicated with the bottom of the absorption tower (1) through pipeline I. A plurality of oxidation air spray nozzles (7) are arranged on the plane where the oxidation air inlet (104) is located in the absorption tower (1); The gypsum liquid outlet (105) is communicated with the cyclone (2) through pipeline II. The top of the cyclone (2) is communicated with the waste water tank (4) through a pipeline. The vacuum belt filter (3) is located at the bottom of the cyclone (2). The bottom of the cyclone (2) is communicated with the top of the waste water tank (4) through a pipeline. A gypsum storage (5) is arranged at the bottom of the discharge side of the vacuum belt filter (3); A pipeline III is connected to the bottom of the waste water tank (4). A waste water pump (8) and a waste water pipeline booster pump (9) are successively arranged on the pipeline III.

2. The wastewater pipeline pressurization system according to claim 1, characterized in that, A circulation pump (10) is arranged on pipeline I.

3. The wastewater pipeline pressurization system according to claim 2, wherein, A gypsum discharge pump (11) is arranged on pipeline II.

4. The wastewater pipeline pressurization system according to any one of claims 1-3, characterized in that A transport vehicle berth is arranged at the bottom of the gypsum storage (5).

5. The wastewater pipeline pressurization system according to claim 4, characterized in that, A conveyor belt is arranged between the vacuum belt filter (3) and the gypsum storage (5), and the conveyor belt is arranged obliquely.

6. The wastewater pipeline pressurization system according to claim 5, characterized in that Both the slurry spray nozzles (6) and the oxidation air spray nozzles (7) are pipe-shaped nozzles.

Images