CN212467533U - Compound fertilizer tail gas sprays processing apparatus - Google Patents
Compound fertilizer tail gas sprays processing apparatus Download PDFInfo
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- CN212467533U CN212467533U CN202020914078.5U CN202020914078U CN212467533U CN 212467533 U CN212467533 U CN 212467533U CN 202020914078 U CN202020914078 U CN 202020914078U CN 212467533 U CN212467533 U CN 212467533U
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Abstract
The utility model discloses a compound fertilizer's tail gas sprays processing apparatus belongs to compound fertilizer technical field. The device comprises a circulating pump, a washing liquid circulating tank, a washing liquid pool, a chimney and a washing tower, wherein a tail gas pipeline is connected with the lower part of the washing tower, a plurality of spray heads are arranged at the upper part in the washing tower, the top of the spray heads is connected with an air inlet at the lower part of the chimney through a communicating pipe, a liquid inlet of the circulating pump is connected with the washing liquid circulating tank through a pipeline, and an overflow port is arranged at the upper part of the washing liquid pool and overflows supernatant liquid in the washing liquid pool to the washing liquid circulating tank; the washing tower and the chimney are both positioned above the washing liquid pool, the bottom of the washing tower and the bottom of the chimney are respectively provided with a first liquid seal pipe and a second liquid seal pipe, the first liquid seal pipe and the second liquid seal pipe are both communicated with the lower part of the liquid level of the washing liquid pool to form a liquid seal, and the chimney is connected with the washing liquid poolThe communicating pipe at the air inlet is obliquely arranged downwards, a second pipeline spraying structure is arranged in the communicating pipe, and the spray head and the second pipeline spraying structure are connected with a liquid outlet of the circulating pump through a pipeline. The device can reduce the mass concentration of dust in the tail gas to 40-50mg/m3。
Description
Technical Field
The utility model belongs to the technical field of compound fertilizer, in particular to compound fertilizer's tail gas sprays processing apparatus.
Background
In the production process of the compound fertilizer, tail gas is generated in the processes of drying, cooling, screening and the like, and the tail gas contains a large amount of dust (possibly a small amount of ammonia), so that the tail gas is not in accordance with the environmental protection requirement and causes the waste of nutrient components if being directly discharged.
Among the prior art, carry out centralized processing to compound fertilizer tail gas through tail gas processing apparatus usually, tail gas processing apparatus includes the circulating pump usually, the lotion circulating tank, the chimney of vertical setting and the scrubbing tower of vertical setting etc, the sub-unit connection of tail gas pipeline and scrubbing tower, upper portion is equipped with a plurality of shower nozzles and its top is passed through the closed tube and is connected with the air inlet of chimney lower part in the scrubbing tower, the inlet of circulating pump passes through the pipeline and is connected with the lotion circulating tank, the bottom of scrubbing tower is passed through the pipeline and is connected with the lotion circulating tank, the shower nozzle passes through the pipeline and is connected with the liquid outlet of circulating. When the circulating liquid reaches a certain concentration (which can be monitored by detecting the density), the washing liquid in the washing liquid circulating tank is discharged for reuse (for example, in a granulation process).
When the applicant adopts the tail gas treatment device to treat the tail gas, the mass concentration of the dust in the treated tail gas is 100-150mg/m3Although the discharge concentration is allowed to be less than or equal to 120mg/m in environmental protection regulations3) Nearby, but possibly exceeding the allowable emission concentration, the tail gas treatment capacity needs to be further improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the embodiment of the utility model provides a compound fertilizer tail gas sprays processing apparatus can reduce dust mass concentration in the tail gas to 40-50mg/m through less change3Not only meets the discharge standard, but also can recover more effective components. The technical scheme is as follows:
the embodiment of the utility model provides a compound fertilizer tail gas sprays processing apparatus, the apparatus include circulating pump 1, lotion circulating bath 2, lotion pond 6, the chimney 3 of vertical setting and the scrubbing tower 4 of vertical setting, the tail gas pipeline is connected with the lower part of scrubbing tower 4, upper portion is equipped with a plurality of shower nozzles 5 in the scrubbing tower 4 and its top is connected with the air inlet of chimney 3 lower part through the communicating pipe, the inlet of circulating pump 1 is connected with lotion circulating bath 2 through the pipeline, the upper portion of lotion pond 6 is equipped with overflow mouth 7 and overflows the supernatant in it to lotion circulating bath 2; washing tower 4 and chimney 3 all are located washing liquid 6 tops of pond and its bottom and are equipped with first liquid seal pipe 8 and second liquid seal pipe 9 respectively, first liquid seal pipe 8 and second liquid seal pipe 9 all let in the below formation liquid seal of the liquid level in washing liquid 6, the communicating pipe of the air inlet department of chimney 3 sets up and is equipped with the second pipeline in it and sprays structure 11 to one side downwards, shower nozzle 5 and second pipeline spray structure 11 are connected through the liquid outlet of pipeline with circulating pump 1.
Wherein, the embodiment of the utility model provides an in the washing tower 4 be cylindric structure and its bottom be big-end-up's toper, first liquid seal pipe 8 along vertical setting and its locate on the bottom of the toper bottom of washing tower 4.
Preferably, the connection between the tail gas pipeline and the washing tower 4 in the embodiment of the present invention is tangent to the washing tower 4.
Preferably, the embodiment of the utility model provides an in tail gas pipeline and 4 junctions slant of scrubbing tower set up and be equipped with first pipeline in it and spray structure 10, first pipeline sprays structure 10 and is connected through the liquid outlet of pipeline with circulating pump 1.
Specifically, the embodiment of the utility model provides an in the tail gas pipeline include dry tail gas pipeline 12, screening tail gas pipeline 13 and cooling tail gas pipeline 14 and be connected with the not co-altitude department in scrubbing tower 4 lower part respectively.
Wherein, the utility model provides an in the closed tube include a type of falling U pipe 15 and an at least pipe chute 16, the both ends of type of falling U pipe 15 are connected with the top of scrubbing tower 4 and the upper end of pipe chute 16 respectively, pipe chute 16 is connected with the air inlet of chimney 3 by the air inlet downward setting of type of falling U pipe 15 to chimney 3 to one side and its lower extreme, be equipped with the second pipeline in the pipe chute 16 and spray structure 11.
Wherein, the diameter of the lower part of the chimney 3 in the embodiment of the utility model is larger than that of the upper part thereof, and the bottom thereof is a cone with a large upper part and a small lower part; the second hydraulic seal pipe 9 is vertically arranged and is arranged at the bottom end of the conical bottom of the chimney 3.
Wherein, the spray head 5 in the embodiment of the utility model is a spiral nozzle, the number of which is 8-20, and the spray head is evenly distributed on the inner wall of the washing tower 4 and is positioned on the same horizontal plane.
Wherein, the embodiment of the utility model provides an in lotion circulating tank 2 be located overflow mouth 7 under and be equipped with liquid replenishing pipe 17 on it, the bottom in lotion pond 6 is equipped with waste discharge port 18.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the embodiment of the utility model provides a compound fertilizer tail gas sprays processing apparatus can reduce dust mass concentration in the tail gas to 40-50mg/m through less change3Not only meets the discharge standard, but also can recover more effective components.
Drawings
Fig. 1 is a schematic structural diagram of a compound fertilizer tail gas spraying treatment device provided by the embodiment of the utility model.
In the figure: 1 circulating pump, 2 lotion circulating bath, 3 chimneys, 4 scrubbing towers, 5 shower nozzles, 6 lotion ponds, 7 overflow outlets, 8 first liquid seal pipes, 9 second liquid seal pipes, 10 first pipeline spray structures, 11 second pipeline spray structures, 12 dry tail gas pipelines, 13 screening tail gas pipelines, 14 cooling tail gas pipelines, 15 type of falling U pipe, 16 pipe chute, 17 liquid supply pipe, 18 waste discharge openings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the embodiment of the utility model provides a compound fertilizer tail gas sprays processing apparatus, the device include circulating pump 1, lotion circulating bath 2, lotion pond 6, the chimney 3 of vertical setting and the scrubbing tower 4 of vertical setting etc. the tail gas pipeline is connected with the lower part (air inlet) of scrubbing tower 4, and upper portion is equipped with a plurality of shower nozzles 5 in the scrubbing tower 4 and its top (gas vent) is connected through the air inlet of communicating pipe with 3 lower parts of chimney. The liquid inlet of the circulating pump 1 is connected with the washing liquid circulating tank 2 through a pipeline, the upper part of the washing liquid pool 6 is provided with an overflow port 7, and supernatant liquid in the overflow port overflows to the washing liquid circulating tank 2. The washing liquid is settled by gravity in the washing liquid tank 6, a solution having a high solidification amount is formed in the lower part (periodically discharged), and the supernatant in the upper part is sent to the washing liquid circulation tank 2 (where the washing liquid is replenished as necessary) and reused. Washing tower 4 and chimney 3 all are located washing liquid 6 tops and its bottom and are equipped with first liquid seal pipe 8 and second liquid seal pipe 9 respectively, first liquid seal pipe 8 and second liquid seal pipe 9 all let in the below of the liquid level of washing liquid 6 and form the liquid seal, the communicating pipe of the air inlet department of chimney 3 sets up and is equipped with second pipeline spray structure 11 (for the common structure in tail gas treatment field, the detailed description is omitted to this embodiment) in it to the slant, shower nozzle 5 and second pipeline spray structure 11 pass through the pipeline and are connected with circulating pump 1's liquid outlet.
Referring to fig. 1, the washing tower 4 in the embodiment of the present invention is a cylindrical structure and the bottom thereof is a cone with a large top and a small bottom, and the first liquid seal pipe 8 is vertically disposed and is disposed on the bottom of the cone bottom of the washing tower 4.
Preferably, referring to fig. 1, in the embodiment of the present invention, when the connection between the tail gas pipeline and the washing tower 4 is tangent to the washing tower 4, the tail gas enters the washing tower 4 tangentially, so as to enhance the washing effect.
Preferably, the embodiment of the present invention provides an exhaust pipeline and 4 junctions of scrubbing tower set up (inclination 3-10 °) and are equipped with first pipeline spray structure 10 (for the common structure in the exhaust gas treatment field, the detailed description is omitted in this embodiment) in it to the downside, and first pipeline spray structure 10 is connected with the liquid outlet of circulating pump 1 through the pipeline.
Specifically, referring to fig. 1, the exhaust gas pipes in the embodiment of the present invention include a drying exhaust gas pipe 12, a sieving exhaust gas pipe 13, and a cooling exhaust gas pipe 14, and are respectively connected to the lower portion of the scrubber 4 at different heights (preferably, at different positions on the circumference of the scrubber 4).
Wherein, referring to fig. 1, the communicating pipe in the embodiment of the present invention includes an inverted U-shaped pipe 15 (with two sides being unequal) and at least one inclined pipe 16 (a plurality of inclined pipes 16 (if there are) are arranged side by side from top to bottom), two ends of the inverted U-shaped pipe 15 are respectively connected with the top (exhaust port) of the washing tower 4 and the upper end of the inclined pipe 16, the inclined pipe 16 is obliquely arranged downwards (inclination angle 3-10 °) from the air inlet of the inverted U-shaped pipe 15 to the chimney 3, and the lower end of the inclined pipe is connected with the air inlet of the chimney 3, and a second pipeline spraying structure 11 is arranged in the inclined pipe 16.
Referring to fig. 1, the diameter of the lower part of the chimney 3 in the embodiment of the present invention is larger than that of the upper part thereof, and the bottom thereof is a cone with a larger top and a smaller bottom. The second hydraulic seal pipe 9 is vertically arranged and is arranged at the bottom end of the conical bottom of the chimney 3.
Referring to fig. 1, the nozzle 5 in the embodiment of the present invention is a spiral nozzle (specification is DN50, coverage area is 3.5 m)2Left and right), the number of which is 8-20 (specifically 12), the number of which is uniformly distributed on the inner wall of the washing tower 4 and is positioned on the same horizontal plane, and the number of which is specifically horizontally arranged along the radial direction of the washing tower 4 or obliquely downwards arranged (so as to cover the washing tower 4 as much as possible).
Referring to fig. 1, the washing liquid circulation tank 2 in the embodiment of the present invention is located right below the overflow port 7 and is provided with a liquid replenishing pipe 17 (which may be connected by a pipeline), and the bottom of the washing liquid tank 6 is provided with a waste discharge port 18 (on which a valve is provided). Specifically, the washing liquid circulation tank 2 is arranged side by side with the washing liquid sump 6 (on the side of the overflow 7 of the washing liquid sump 6) and is lower in height than the washing liquid sump 6.
Wherein, the diameter of the washing tower 4 in the embodiment is 4-7m, and the height is 8-15 m; the distance between the spray nozzle 5 and the bottom of the washing tower 4 is 6-10m, the washing tower 4 and the chimney 3 are positioned above the washing liquid pool 6 by 2-4m, the height of the chimney 3 is 30-50m, and the total spraying amount of the spray nozzle 5 is 80-130m3/h。
Wherein, a pump, a flowmeter and/or a valve and the like are arranged on the pipeline between the structures according to the requirement.
Wherein, "first" and "second" in the embodiment of the present invention only play a distinguishing role, and have no other special meaning.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A compound fertilizer tail gas spraying treatment device comprises a circulating pump (1), a washing liquid circulating tank (2), a vertically arranged chimney (3) and a vertically arranged washing tower (4), wherein a tail gas pipeline is connected with the lower part of the washing tower (4), a plurality of spray heads (5) are arranged at the upper part in the washing tower (4), the tops of the spray heads are connected with an air inlet at the lower part of the chimney (3) through a communicating pipe, a liquid inlet of the circulating pump (1) is connected with the washing liquid circulating tank (2) through a pipeline, and the spray heads (5) are connected with a liquid outlet of the circulating pump (1) through a pipeline; the device is characterized by also comprising a washing liquid pool (6), wherein the upper part of the washing liquid pool (6) is provided with an overflow port (7) and the supernatant in the washing liquid pool overflows to a washing liquid circulating tank (2); washing tower (4) and chimney (3) all are located washing liquid pond (6) top and its bottom and are equipped with first liquid seal pipe (8) and second liquid seal pipe (9) respectively, first liquid seal pipe (8) and second liquid seal pipe (9) all let in the below formation liquid seal of the liquid level in washing liquid pond (6), the communicating pipe of the air inlet department of chimney (3) sets up and is equipped with the second pipeline in it and sprays structure (11) to one side down, the second pipeline sprays structure (11) and is connected through the liquid outlet of pipeline and circulating pump (1).
2. A compound fertilizer tail gas spraying treatment device according to claim 1, characterized in that the washing tower (4) is of a cylindrical structure and the bottom of the washing tower (4) is of a conical shape with a large top and a small bottom, and the first liquid seal pipe (8) is vertically arranged and arranged at the bottom end of the conical bottom of the washing tower (4).
3. A compound fertilizer tail gas spray treatment device according to claim 1, characterized in that the joint of the tail gas pipeline and the washing tower (4) is tangent to the washing tower (4).
4. A compound fertilizer tail gas spraying treatment device as claimed in claim 1, wherein the joint of the tail gas pipeline and the washing tower (4) is obliquely arranged downwards, and a first pipeline spraying structure (10) is arranged in the tail gas pipeline, and the first pipeline spraying structure (10) is connected with a liquid outlet of the circulating pump (1) through a pipeline.
5. A compound fertilizer tail gas spray treatment device according to claim 1, characterized in that the tail gas pipeline comprises a drying tail gas pipeline (12), a screening tail gas pipeline (13) and a cooling tail gas pipeline (14) and is respectively connected with the lower part of the washing tower (4) at different heights.
6. A compound fertilizer tail gas spraying treatment device according to claim 1, wherein the communicating pipe comprises an inverted U-shaped pipe (15) and at least one inclined pipe (16), two ends of the inverted U-shaped pipe (15) are respectively connected with the top of the washing tower (4) and the upper end of the inclined pipe (16), the inclined pipe (16) is obliquely arranged downwards from the inverted U-shaped pipe (15) to the air inlet of the chimney (3) and the lower end of the inclined pipe is connected with the air inlet of the chimney (3), and a second pipeline spraying structure (11) is arranged in the inclined pipe (16).
7. A compound fertilizer tail gas spraying treatment device according to claim 1, characterized in that the diameter of the lower part of the chimney (3) is larger than that of the upper part thereof, and the bottom thereof is a cone with a larger upper part and a smaller lower part; the second hydraulic seal pipe (9) is vertically arranged and is arranged at the bottom end of the conical bottom of the chimney (3).
8. A compound fertilizer tail gas spraying treatment device according to claim 1, characterized in that the spray heads (5) are 8-20 spiral spray nozzles which are uniformly distributed on the inner wall of the washing tower (4) and are positioned on the same horizontal plane.
9. A compound fertilizer tail gas spraying treatment device according to claim 1, characterized in that the washing liquid circulation tank (2) is located right below the overflow port (7) and is provided with a liquid replenishing pipe (17), and the bottom of the washing liquid tank (6) is provided with a waste discharge port (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020914078.5U CN212467533U (en) | 2020-05-27 | 2020-05-27 | Compound fertilizer tail gas sprays processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020914078.5U CN212467533U (en) | 2020-05-27 | 2020-05-27 | Compound fertilizer tail gas sprays processing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN212467533U true CN212467533U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020914078.5U Active CN212467533U (en) | 2020-05-27 | 2020-05-27 | Compound fertilizer tail gas sprays processing apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN212467533U (en) |
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2020
- 2020-05-27 CN CN202020914078.5U patent/CN212467533U/en active Active
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