CN219502392U - Waste gas innocent treatment device in NMP wastewater recycling treatment process - Google Patents

Abstract

The utility model relates to the technical field of NMP wastewater recycling treatment, in particular to a waste gas harmless treatment device in the NMP wastewater recycling treatment process, which comprises an anaerobic reactor, wherein the anaerobic reactor is connected with a spray tower, the spray tower is connected with a biological filter, a spray assembly and a gas distribution assembly are arranged in the spray tower, the gas distribution assembly is positioned at the bottom of the spray tower and is communicated with the top of the anaerobic reactor, the spray assembly is positioned at the upper part of the spray tower, the spray assembly comprises a hollow rotating shaft and a driving motor for driving the rotating shaft to rotate, a plurality of spray pipes are fixedly arranged on the rotating shaft, the spray pipes are distributed along the circumferential direction of the rotating shaft, a plurality of water spray ports are formed in the length direction of the spray pipes, the spray pipes are communicated with a water pump through the rotating shaft, the rotating shaft is positioned below the spray pipes and provided with horizontally extending blades, and the blades are parallel to the axis of the rotating shaft. The utility model has the effect of absorbing and then discharging the odor generated in the anaerobic reactor.

Description

Waste gas innocent treatment device in NMP wastewater recycling treatment process

Technical Field

The utility model relates to the technical field of NMP wastewater recycling treatment, in particular to a waste gas harmless treatment device in the NMP wastewater recycling treatment process.

Background

NMP refers to N-methyl pyrrolidone, is colorless transparent oily liquid, is easy to dissolve in water, and can be applied to lithium batteries, medicines, pesticides, pigments, cleaning agents or insulating materials. In the industrial NMP production process, the main source of wastewater is a rectification process section, which contains more NMP. The resource treatment of NMP wastewater is to use the wastewater containing NMP as a carbon source to replace sodium acetate or methanol in the deep denitrification process of urban sewage treatment plants, so that the consumption of sodium acetate or methanol in the urban sewage treatment process can be reduced, and the emission of carbon dioxide is reduced.

The related art discloses a device for recycling town sewage by utilizing NMP wastewater, which comprises an aerobic reactor and an anaerobic reactor, wherein the anaerobic reactor is an internal circulation bioreactor and is connected with a water inlet; the aerobic reactor is an internal circulation biological reactor and is connected with a water outlet, and a connecting pipe is connected between the anaerobic reactor and the aerobic reactor, so that liquid in the anaerobic reactor can flow into the aerobic reactor, and sewage can pass through the anaerobic reactor and the aerobic reactor to achieve the denitrification effect.

However, in the above-described structure, odor is generated in the anaerobic reactor during the biological treatment, and the gases such as hydrogen sulfide and methane contained in the odor need to be treated.

Disclosure of Invention

The utility model provides a waste gas harmless treatment device in the NMP wastewater recycling treatment process, which aims to absorb and then discharge odor generated in an anaerobic reactor.

The utility model provides a waste gas harmless treatment device in the NMP wastewater recycling treatment process, which adopts the following technical scheme:

the utility model provides an exhaust gas innocent treatment device in NMP waste water resourceful treatment process, includes anaerobic reactor, anaerobic reactor is connected with the spray column, and the spray column is connected with biofilter, the inside spray assembly and the gaseous distribution subassembly of being provided with of spray column, gaseous distribution subassembly is located the bottom of spray column and communicates with anaerobic reactor's top, spray assembly is located the upper portion of spray column, spray assembly includes hollow pivot and drive pivot pivoted driving motor, the fixed a plurality of shower that are provided with in the pivot, the shower distributes along the circumference of pivot, a plurality of water jet has been seted up to the length direction of shower, the shower has the water pump through the pivot intercommunication, the pivot is located the below of shower and is provided with the horizontally extending blade, and the blade is parallel to the axis of pivot.

Through adopting above-mentioned technical scheme, during the use, the foul smell that produces in the anaerobic reactor enters into the spray column from the below of spray column through gas distribution subassembly to from the bottom up removes, the spray subassembly that sets up in the spray column simultaneously is connected with the water pump, carry the liquid that is used for absorbing the foul smell in to spray the subassembly through the water pump, spray the subassembly simultaneously and include a plurality of shower, the shower communicates with the water pump through hollow pivot, the pivot rotates under driving motor's effect, make a plurality of shower with the liquid that the water pump carried follow the rotation evenly distributed of pivot to the inside of spray column and from top to bottom remove, and then fully contact with the foul smell in the spray column and absorb the foul smell by the liquid, thereby reach and absorb the back through biofilter emission with the foul smell that produces in the anaerobic reactor.

Preferably, the blades are provided with a plurality of groups and are arranged at intervals along the length direction of the rotating shaft, and two adjacent groups of blades are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, the blade setting is in the pivot and along the length direction interval arrangement of pivot, makes the blade can be with gaseous to horizontally direction removal when rotating along with the pivot, and then cooperates the speed that gaseous downwardly moving, makes gaseous can form the vortex in the spray column, and then improves the absorbing sufficiency of foul smell in the spray column, and multiunit blade can form a plurality of vortex to gaseous in proper order.

Preferably, a fan blade is arranged between two adjacent groups of blades, the fan blade is fixed on the rotating shaft, and downward wind force is formed in the process that the fan blade rotates along with the rotating shaft.

Through adopting above-mentioned technical scheme, set up the flabellum in the middle of two adjacent groups of blades, gas that will flow upwards when making the flabellum rotate reduces in the position of flabellum to reduce the ascending speed of foul smell, further improve the absorption efficiency to the foul smell.

Preferably, the gas distribution assembly comprises a plurality of annular pipes, the annular pipes are coaxially arranged, the annular pipes are located at the center of the spray tower, a plurality of gas outlets are uniformly formed in the length direction of the annular pipes, and the annular pipes are communicated with the anaerobic reactor through gas pipes.

Through adopting above-mentioned technical scheme, the coaxial setting of annular pipe is a plurality of, and annular pipe all communicates with the trachea, makes the trachea pass through the gas outlet on annular pipe and the annular pipe and more evenly disperses the downthehole foul smell of trachea in the spray column, makes the foul smell more easily carry out abundant contact with liquid and absorbs.

Preferably, the top of the anaerobic reactor is fixedly provided with a collecting cover, the collecting cover is arranged to be conical, one larger end of the collecting cover is communicated with the top of the spray tower, and the air pipe is communicated with the upper end of the collecting cover through a recovery pipe.

Through adopting above-mentioned technical scheme, collect the cover and set up into the toper, collect the cover and collect the foul smell in the anaerobic reactor more easily, then the re-tracheal enters into in the spray column.

Preferably, the water inlet of the water pump is communicated with the bottom of the spray tower, the water outlet of the water pump is connected with a circulating water pipe, the upper end of the rotating shaft is provided with a rotary joint, and the circulating water pipe is communicated with the upper end of the rotating shaft through the rotary joint.

Through adopting above-mentioned technical scheme, the water inlet of water pump and the bottom intercommunication of spray column, the water pump can be followed the bottom extraction of spray column and is used for absorbing the liquid of foul smell, makes liquid flow back to the spray column in again under circulating water pipe's effect, makes liquid make full use of.

Preferably, the driving motor is fixed at the top of the spray tower, a driving gear is coaxially and fixedly arranged on an output shaft of the driving motor, a driven gear is coaxially and fixedly arranged on the rotating shaft, and the driving gear is meshed with the driven gear.

Through adopting above-mentioned technical scheme, driving motor fixes at the top of spray column, can drive the driving gear through driving motor during operation and rotate, and the driving gear meshes with driven gear again, makes driven gear drive pivot rotation.

Preferably, the fan between spray column and the biofilter, the air intake of fan communicates in the top of spray column, in the spray column and be located the top of shower and be provided with the defroster.

Through adopting above-mentioned technical scheme, set up the fan between spray column and the biofilter, the fan can be with the gas in the spray column to the biofilter in carry, can dry the gas that enters into in the fan under the effect of defroster, reduces the damage of water smoke to the fan.

Preferably, the length of the blades is less than half the radius of the spray tower.

Through adopting above-mentioned technical scheme, the length of blade is less than half of spray column radius, makes the position between blade tip to the spray column inner wall be used for the gaseous rotation of vortex form, reduces the blade to the gaseous blocking of vortex that forms to can make gaseous pivoted time longer.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the liquid conveyed by the water pump is uniformly distributed into the spray tower along with the rotation of the rotating shaft and moves from top to bottom through the plurality of spray pipes, so that the liquid is fully contacted with the odor in the spray tower and absorbed by the liquid, and the odor generated in the anaerobic reactor is absorbed and then discharged through the biological filter;

2. the blades can move the gas to the horizontal direction when rotating along with the rotating shaft, so that the gas can form vortex in the spray tower by matching with the downward moving speed of the gas, and the sufficiency of absorbing odor in the spray tower is improved;

3. the liquid for absorbing odor is extracted from the bottom of the spray tower through the water pump, so that the liquid can flow back into the spray tower under the action of the circulating water pipe, and the liquid can be fully utilized.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of the internal structure of a spray tower according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the position of a blade in an embodiment of the utility model.

Reference numerals illustrate: 1. an anaerobic reactor; 11. a collection cover; 2. a spray tower; 3. a biological filter; 31. a blower; 41. a recovery pipe; 42. an air pipe; 5. a spray assembly; 51. a rotating shaft; 52. a driving motor; 53. a shower pipe; 54. a driven gear; 55. a drive gear; 6. a gas distribution assembly; 61. an annular tube; 611. an air outlet; 71. a support frame; 72. a blade; 73. a fan blade; 8. a demister; 91. a water pump; 92. a circulating water pipe; 93. a rotary joint; 94. and a water jet.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses an exhaust gas harmless treatment device in an NMP wastewater recycling treatment process, referring to fig. 1, the device comprises an anaerobic reactor 1, a spray tower 2 and a biological filter 3, wherein the top of the anaerobic reactor 1 is provided with a collecting cover 11, the collecting cover 11 is communicated with the anaerobic reactor 1, so that odor generated in the anaerobic reactor 1 firstly enters the collecting cover 11, the collecting cover 11 can adopt a conical structure, the larger end of the collecting cover 11 is connected with the upper end of the anaerobic reactor 1, the smaller end of the collecting cover 11 is upwards arranged, a recovery pipe 41 is arranged between a spray tower 2 and the collecting cover 11, one end of the recovery pipe 41 is connected to the upper end of the collecting cover 11, one end of the recovery pipe 11, which is far away from the collecting cover 11, is connected with an air pipe 42, one end of the air pipe 42, which is far away from the recovery pipe 41, is led into the spray tower 2, so that odor enters the spray tower 2 through the recovery pipe 41 and the air pipe 42, the odor can be absorbed in the spray tower 2, a fan 31 is arranged between the spray tower 2 and the biological filter 3, the smaller end of the collecting cover 11 is upwards, a recovery pipe 41 is arranged between the spray tower 2 and the biological filter is connected with the upper end of the biological filter 3, the biological filter is not provided with an air inlet, the biological filter is not polluted by the biological filter, and the biological filter is arranged at the upper filter, and the biological filter is not provided with an air filter layer, and the biological filter is polluted by the filter.

Referring to fig. 2, a spray assembly 5 is disposed in the spray tower 2, the spray assembly 5 is disposed at an upper portion of the spray tower 2, so that liquid sprayed by the spray assembly 5 moves from top to bottom, a gas distribution assembly 6 is disposed at a position inside and at a bottom of the spray tower 2, and the gas distribution assembly 6 can enable gas to move upward from a lower portion of the spray tower 2, so that the gas can collide with the liquid sprayed by the spray assembly 5 in the spray tower 2, and the soluble gas can be absorbed into the liquid.

Referring to fig. 2 and 3, the spray assembly 5 includes a rotation shaft 51 and a driving motor 52 driving the rotation shaft 51 to rotate, the rotation shaft 51 is rotatably provided at the center of the spray tower 2 and vertically disposed, and the driving motor 52 is fixed on the spray tower 2. The support frame 71 is arranged in the spray tower 2, and the lower end of the rotating shaft 51 is rotatably arranged on the support frame 71, so that the rotating shaft 51 rotates more stably. The upper portion of pivot 51 is provided with shower 53, and pivot 51 inside is hollow structure, and shower 53 communicates with the inside of pivot 51. The outside at spray column 2 is provided with water pump 91, and the water inlet of water pump 91 communicates with spray column 2's bottom, and the delivery port of water pump 91 is connected with circulating pipe 92, installs rotary joint 93 in the upper end of pivot 51, and rotary joint 93 and circulating pipe 92 keep away from the one end intercommunication of water pump 91, make pivot 51 pivoted in-process, and water pump 91 can send into liquid through rotary joint 93 in to pivot 51 and shower 53. A plurality of shower pipes 53 are uniformly provided along the circumference of the rotating shaft 51, and 6 to 10 shower pipes are selected in this embodiment. The spray pipe 53 is provided with a water spray port 94, the water spray port 94 can be provided with a spiral spray head, the spray pipe 53 can spray water mist downwards through the water spray port 94, and meanwhile, the water mist is uniformly sprayed into the spray tower 2 to form a water column under the rotation action of the rotating shaft 51.

Referring to fig. 2 and 3, the driving motor 52 is located on the top surface of the spray tower 2, the driven gear 54 is coaxially and fixedly arranged on the rotating shaft 51, the driving gear 55 is coaxially and fixedly arranged on the output shaft of the driving motor 52, the driving gear 55 is meshed with the driven gear 54, the driving motor 52 can drive the rotating shaft 51 through the driving gear 55 and the driven gear 54, and then the rotary joint 93 can be conveniently connected to the upper end of the rotating shaft 51. The demister 8 is arranged in the spray tower 2 and above the spray pipes 53, mist water can be condensed into water drops at the part floating upwards through the demister 8, and then falls back to the bottom of the spray tower 2, meanwhile, water mist can be reduced to enter the fan 31, and damage to the fan 31 is reduced.

Referring to fig. 2 and 3, a plurality of groups of blades 72 are sequentially disposed on the rotating shaft 51 from bottom to top, the blades 72 are parallel to the axis of the rotating shaft 51, one end of each blade 72 is fixed on the rotating shaft 51, the other end extends horizontally away from the center direction of the rotating shaft 51, the length of each blade 72 is less than half of the radius of the spray tower 2, each group of blades 72 is located at the same height position, a plurality of blades 72 can be disposed, and four blades are disposed in this embodiment. The two groups of blades 72 which are adjacent up and down are arranged in a staggered manner, so that the work of the blades 72 can be distributed in the spray tower 2, and then the water mist and the gas in the spray tower 2 are stirred, and meanwhile, the gas can form a vortex state by moving the gas to the horizontal direction and matching with the upward movement of the gas, so that the stay time of the gas in the spray tower 2 is longer, and the gas is absorbed more fully.

Referring to fig. 3, a plurality of groups of fan blades 73 are fixedly arranged on the rotating shaft 51, each group of fan blades 73 is located between the upper group of fan blades 72 and the lower group of fan blades 72, the length of each fan blade 73 is greater than that of each fan blade 72, and the wind direction generated by each fan blade 73 in the process that the fan blades 73 rotate along with the rotating shaft 51 is from top to bottom, so that the fan blades 73 can generate a downward movement process of gas during working, and then the upward flowing speed of the gas can be reduced after passing through each group of fan blades 73, and the time of the gas in the spray tower 2 is further prolonged, so that the effect of fully absorbing the gas is achieved.

Referring to fig. 3, the gas distribution assembly 6 includes a plurality of annular pipes 61, two annular pipes 61 are provided in this embodiment, the centers of the annular pipes 61 are coincident and located at the center of the spray tower 2, the gas pipe 42 is connected to the annular pipes 61 at a plurality of points above the annular pipes 61, and a plurality of downwardly opened gas outlets 611 are provided at the lower position of the annular pipes 61, and the plurality of gas outlets 611 are uniformly distributed along the length of the annular pipes 61, so that the gas pipe 42 distributes the gas into the spray tower 2 through the annular pipes 61, and further the gas and the water mist have more contact probability.

The working procedure of this embodiment is:

firstly, the odor overflows from the collecting cover 11, and then is sent into the two annular pipes 61 through the air pipes 42, so that the gas is distributed into the spray tower 2, vortex state can be formed to be mixed with water mist when the gas contacts with the blades 72 in the process of moving from bottom to top, meanwhile, the upward moving speed of the gas can be reduced when the gas passes through the positions of the blades 73, the time of the gas in the spray tower 2 is further prolonged, and the gas is absorbed in the spray tower 2 through liquid.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (9)

1. Waste gas innocent treatment device in NMP waste water resourceful treatment process, including anaerobic reactor (1), its characterized in that: anaerobic reactor (1) is connected with spray column (2), and spray column (2) are connected with biofilter (3), spray column (2) inside is provided with spray assembly (5) and gas distribution subassembly (6), gas distribution subassembly (6) are located the bottom of spray column (2) and communicate with the top of anaerobic reactor (1), spray assembly (5) are located the upper portion of spray column (2), spray assembly (5) include hollow pivot (51) and drive pivot (51) pivoted driving motor (52), fixed being provided with a plurality of shower (53) on pivot (51), shower (53) are along the circumference distribution of pivot (51), a plurality of water jets (94) have been seted up to the length direction of shower (53), shower (53) are connected with water pump (91) through pivot (51), the below that pivot (51) are located shower (53) is provided with horizontally extending blade (72), and blade (72) are on a parallel with the axis of pivot (51).

2. The harmless treatment device for waste gas in the NMP waste water recycling treatment process according to claim 1, which is characterized in that: the blades (72) are provided with a plurality of groups and are arranged at intervals along the length direction of the rotating shaft (51), and two adjacent groups of blades (72) are arranged in a staggered mode.

3. The harmless treatment device for waste gas in the NMP waste water recycling treatment process according to claim 2, which is characterized in that: and fan blades (73) are arranged between two adjacent groups of blades (72), the fan blades (73) are fixed on the rotating shaft (51), and downward wind force is formed in the process that the fan blades (73) rotate along with the rotating shaft (51).

4. A waste gas harmless treatment device in a NMP waste water recycling treatment process according to any one of claims 1 to 3, characterized in that: the gas distribution assembly (6) comprises a plurality of annular pipes (61), the annular pipes (61) are coaxially arranged, the annular pipes (61) are located at the center of the spray tower (2), a plurality of gas outlets (611) are uniformly formed in the length direction of the annular pipes (61), and the annular pipes (61) are communicated with the anaerobic reactor (1) through gas pipes (42).

5. The harmless treatment device for waste gas in the NMP waste water recycling treatment process according to claim 4, which is characterized in that: the top of anaerobic reactor (1) is fixed and is provided with collection cover (11), collection cover (11) set to the toper, collection cover (11) great one end communicates in the top of spray column (2), through recovery pipe (41) intercommunication between trachea (42) and the upper end of collection cover (11).

6. The harmless treatment device for waste gas in the NMP waste water recycling treatment process according to claim 1, which is characterized in that: the water inlet of water pump (91) is communicated with the bottom of spray column (2), the delivery port of water pump (91) is connected with circulating pipe (92), rotary joint (93) is installed to the upper end of pivot (51), circulating pipe (92) are communicated with the upper end of pivot (51) through rotary joint (93).

7. The harmless treatment device for waste gas in the NMP waste water recycling treatment process according to claim 6, which is characterized in that: the driving motor (52) is fixed at the top of the spray tower (2), a driving gear (55) is coaxially and fixedly arranged on an output shaft of the driving motor (52), a driven gear (54) is coaxially and fixedly arranged on the rotating shaft (51), and the driving gear (55) is meshed with the driven gear (54).

8. The harmless treatment device for waste gas in the NMP waste water recycling treatment process according to claim 1, which is characterized in that: the novel biological filter is characterized in that a fan (31) is arranged between the spray tower (2) and the biological filter (3), an air inlet of the fan (31) is communicated with the top of the spray tower (2), and a demister (8) is arranged in the spray tower (2) and above the spray pipe (53).

9. The harmless treatment device for waste gas in the NMP waste water recycling treatment process according to claim 1, which is characterized in that: the length of the blades (72) is less than half the radius of the spray tower (2).