CN210964556U - Diammonium tail gas treatment system with pipeline spraying function - Google Patents
Diammonium tail gas treatment system with pipeline spraying function Download PDFInfo
- Publication number
- CN210964556U CN210964556U CN201921497394.0U CN201921497394U CN210964556U CN 210964556 U CN210964556 U CN 210964556U CN 201921497394 U CN201921497394 U CN 201921497394U CN 210964556 U CN210964556 U CN 210964556U
- Authority
- CN
- China
- Prior art keywords
- washing
- drying
- tank
- circulating
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a diammonium tail gas treatment system that takes pipeline to spray belongs to diammonium production technical field. The device comprises a drying cyclone separator, a fluorine washing tower, a fluorine washing circulating tank, a granulation washing tower, a drying washing tower, a pipeline spraying structure, a Venturi washer, a prewashing circulating tank, a granulation washing circulating tank, a dust collection washing tower, a dust collection washing circulating tank and a drying washing circulating tank, wherein the dust collection washing tower is added for independently treating other tail gases so as to reduce the burden of the fluorine washing tower, so that the tail gas treatment can be realized by adopting process water and the effect is better; a pipeline spraying structure and a Venturi scrubber are arranged to replace a granulation cyclone separator, so that a closed system is formed, leakage of ammonia gas and corrosion to a cyclone dust collector are avoided (the cyclone dust collector is expensive, and the ammonia content is rapidly reduced by pipeline spraying); a plurality of washing liquid circulating grooves are added, the washing liquid flow is adjusted, the concentration and the neutralization degree of the spraying liquid of a part of washing towers are reduced, and the risk of blockage of pipelines and spray heads is reduced.
Description
Technical Field
The utility model belongs to the technical field of the diammonium production, in particular to diammonium tail gas treatment system who takes pipeline to spray.
Background
Diammonium phosphate, also called diammonium hydrogen phosphate, ammonium hydrogen phosphate, is a white crystal with the formula (NH)4)2HPO4Dissolved in water and heated to 155 ℃ for decomposition, but it is also possible to gradually decompose at room temperature to release ammonia gas and form ammonium dihydrogen phosphate. The product specification is as follows: 64% (N18: P)2O546）、61%（N17：P2O545）、57% （N15：P2O542). In order to increase the storage stability, a wrapping agent is added in the production process of part of products, so that the appearance of the products is brown or yellow.
The general preparation method of diammonium phosphate comprises the following steps: mixing concentrated phosphoric acid (with or without ammonia) with washing liquor from a tail gas treatment system in a neutralization reaction tank, carrying out neutralization reaction with ammonia gas (with or without phosphoric acid) in a tubular reactor after mixing, and carrying out granulation with ammonia gas in a granulation device after the neutralization reaction. The existing tail gas treatment system generally treats tail gas through a washing tower, and with reference to fig. 1, chinese patent application No. 201510589060.6 discloses a washing system including a washing liquid circulation tank, a fluorine scrubber circulation tank, a granulator scrubber, a dryer scrubber, a fluorine scrubber, a process scrubber, and the like. Wherein, a washing liquid outlet of the washing liquid circulation tank is connected with the neutralization tank and the tubular reactor, a granulator scrubber and a dryer scrubber are respectively connected with the washing liquid circulation tank to form a circulation washing structure, the granulator scrubber and the dryer scrubber are respectively connected with the granulator and the dryer (a cyclone dust collector can be arranged between the granulator scrubber and the dryer scrubber for recovering dust), tail gas outlets of the granulator scrubber and the dryer scrubber are respectively connected with a gas inlet of the fluorine scrubber, a sorting screen is arranged, the fluidized bed cooler and the material returning structure are connected with an air inlet of a fluorine washer (a cyclone dust collector can be arranged between the fluidized bed cooler and the material returning structure for recovering dust), the fluorine washer and a fluorine washer liquid circulation tank form a circulating washing structure, the fluorine washer circulation tank is connected with a washing liquid circulation tank, a tail gas outlet of a neutralization tank is connected with a process washer, and a liquid discharge port of the process washer (provided with the circulation tank and adopting concentrated phosphoric acid for countercurrent absorption) is connected with the washing liquid circulation tank.
The applicant, when using the aforesaid exhaust gas treatment system, found the following problems:
1. the tail gas discharged by the granulating device has high ammonia content and less dust compared with a drying device (a roller), so that the tail gas is not suitable for entering a cyclone separator, is easy to leak and is easy to corrode equipment.
2. The fluorine washing tower adopts phosphoric acid as a washing liquid (used for treating other tail gases (tail gases of a separation sieve, a fluidized bed cooler, a material returning structure and the like) and dried tail gases and granulation tail gases after washing), and the washing effect is not good;
3. the other washing towers except the fluorine washing tower adopt washing liquid of a washing circulation tank, and the density is high (the density is more than 1.5 g/cm)3) And the neutralization degree is high (about 0.6), so that pipelines and spray heads are easy to block.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a diammonium tail gas treatment system with pipeline spraying, which adds a dust collection washing tower to treat other tail gases independently so as to reduce the burden of a fluorine washing tower, and can realize tail gas treatment by adopting process water with better effect; a pipeline spraying structure and a Venturi scrubber are arranged to replace a granulation cyclone separator, so that a closed system is formed, leakage of ammonia gas and corrosion to a cyclone dust collector are avoided (the cyclone dust collector is expensive, and the ammonia content is rapidly reduced by pipeline spraying); a plurality of washing liquid circulating grooves are added, the washing liquid flow is adjusted, the concentration and the neutralization degree of the spraying liquid of a part of washing towers are reduced, and the risk of blockage of pipelines and spray heads is reduced. The technical scheme is as follows:
the embodiment of the utility model provides a diammonium tail gas treatment system with pipeline spraying, including dry cyclone, fluorine scrubbing tower 8, fluorine scrubbing circulation groove 10, granulation scrubbing tower 5, dry scrubbing tower, pipeline spraying structure, venturi scrubber 4, prewashing circulation groove 21, granulation scrubbing circulation groove 18, washing tower 9 gathers dust, washing circulation groove 12 and dry scrubbing circulation groove gather dust, dry cyclone, dry scrubbing tower and fluorine scrubbing tower 8 connect gradually through the pipeline, the tail gas outlet of granulation scrubbing tower 5 is connected with fluorine scrubbing tower 8 through the pipeline; the air inlet of the Venturi scrubber 4 is connected with the tail gas outlet of the granulation device 2 through an air outlet pipe 3 with a pipeline spraying structure, and the air outlet of the Venturi scrubber 4 is connected with the air inlet of the granulation washing tower 5 through a pipeline; the air inlet of the dust collection washing tower 9 collects tail gas except for dry tail gas and granulation tail gas, and the tail gas outlet of the dust collection washing tower is connected with the air inlet of the fluorine washing tower 8 through a pipeline; the pipeline spraying structure comprises a plurality of spray heads 25 arranged in the air outlet pipe 3, and a spraying liquid inlet of the pipeline spraying structure is connected with the prewashing circulation groove 21 through a pipeline; the fluorine washing circulating tank 10 and the fluorine washing tower 8 form a circulating spraying structure, the circulating spraying structure is connected with the dust collection washing circulating tank 12 through a pipeline, and a process water replenishing port is formed in the circulating spraying structure; the dust collection washing circulating tank 12 and the dust collection washing tower 9 form a circulating spraying structure and are connected with the drying washing circulating tank through pipelines; the drying and washing circulating tank and the drying and washing tower form a circulating spraying structure and are connected with the prewashing circulating tank 21 through a pipeline; the prewashing circulation tank 21 and the Venturi scrubber 4 form a circulating spraying structure and are connected with the granulation washing circulation tank 18 and the phosphoric acid storage tank 23 through pipelines; the granulation washing circulation tank 18 and the granulation washing tower 5 form a circulation spraying structure and are connected with the neutralization reaction tank 1 through a pipeline.
Wherein, the embodiment of the utility model provides an air-out pipe 3's diameter is 0.8-1.3m and its contained angle with the horizontal plane is 10-35, and it is by the air inlet at 2 tail gas outlet slant downwardly to venturi scrubber 4 tops of prilling granulator, and every interval 1.2-1.8m sets up a shower nozzle 25 on the axis in it, and the distance between 25 of a shower nozzle 25 of the top and 2 tail gas outlet of prilling granulator is greater than 0.5 m.
Further, the nozzle 25 of the embodiment of the present invention is disposed toward the air inlet direction of the venturi scrubber 4, and sprays the spraying liquid uniformly around to spray the spraying liquid with a conical surface.
Specifically, the spray head 25 in the embodiment of the present invention is a vortex nozzle and the spraying amount thereof is 30-35m3/h。
Preferably, the number of the drying and washing towers in the embodiment of the present invention is 2, i.e., the first drying and washing tower 6 and the second drying and washing tower 7; the number of the drying and washing circulating grooves is 2, and the drying and washing circulating grooves are respectively a first drying and washing circulating groove 14 and a second drying and washing circulating groove 16; the drying cyclone separator, the first drying and washing tower 6, the second drying and washing tower 7 and the fluorine washing tower 8 are sequentially connected through pipelines, the first drying and washing circulating tank 14 and the first drying and washing tower 6 form a circulating spraying structure and are connected with the dust collection and washing circulating tank 12 and the second drying and washing circulating tank 16 through pipelines, and the second drying and washing circulating tank 16 and the second drying and washing tower 7 form a circulating spraying structure and are connected with the prewashing circulating tank 21 through pipelines.
Wherein, the fluorine washing circulation tank 10, the dust collecting washing circulation tank 12, the first drying and washing circulation tank 14, the second drying and washing circulation tank 16, the prewashing circulation tank 21 and the granulating and washing circulation tank 18 in the embodiment of the utility model are all provided with stirrers therein.
Specifically, the fluorine washing circulation tank 10 in the embodiment of the present invention is located right below the fluorine washing tower 8 and is connected to the spray liquid inlet of the fluorine washing tower 8 and the dust collection washing circulation tank 12 through a pipeline with a fluorine washing pump 11; the dust collection washing circulating tank 12 is positioned right below the dust collection washing tower 9 and is connected with a spray liquid inlet of the dust collection washing tower 9 and a first drying washing circulating tank 14 through a pipeline with a dust collection washing pump 13; the first drying and washing circulating tank 14 is positioned right below the first drying and washing tower 6 and is connected with a spraying liquid inlet of the first drying and washing tower 6 and a second drying and washing circulating tank 16 through a pipeline with a first drying and washing pump 15; the second drying and washing circulating tank 16 is positioned right below the second drying and washing tower 7 and is connected with a spraying liquid inlet of the second drying and washing tower 7 and the prewashing circulating tank 21 through a pipeline with a second drying and washing pump 17; the prewashing circulation tank 21 is positioned right below the Venturi scrubber 4 and is connected with a spraying liquid inlet of the Venturi scrubber 4 and a spraying liquid inlet of a pipeline spraying structure through a pipeline with a prewashing circulation pump 22, an overflow port at the upper part of the prewashing circulation tank is connected with the granulating washing circulation tank 18 through a pipeline to overflow washing liquid to the granulating washing circulation tank 18, and the prewashing circulation tank is connected with a phosphoric acid storage tank 23 through a pipeline with a phosphoric acid pump 24; the granulation washing circulation tank 18 is located right below the granulation washing tower 5 and is connected with a spray liquid inlet and a neutralization reaction tank of the granulation washing tower 5 through a pipeline with a granulation washing pump 19.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the embodiment of the utility model provides a diammonium tail gas treatment system with pipeline spraying, which can absorb ammonia and dust in tail gas, and the discharged tail gas meets the national standard; the pipeline and the spray head of the system are not easy to block, the maintenance period is prolonged, and the yield is improved.
Drawings
FIG. 1 is a schematic block diagram of a prior art tail gas treatment;
FIG. 2 is a schematic block diagram of a diammonium tail gas treatment system with pipeline spraying according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a diammonium tail gas treatment system with pipeline spraying according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a pipeline spraying structure provided by the embodiment of the present invention.
In the figure: 1 neutralizing reaction tank, 2 granulating device, 3 air outlet pipe, 4 Venturi scrubber, 5 granulating and washing tower, 6 first drying and washing tower, 7 second drying and washing tower, 8 fluorine washing tower, 9 dust collecting and washing tower, 10 fluorine washing circulating tank, 11 fluorine washing pump, 12 dust collecting and washing circulating tank, 13 dust collecting and washing pump, 14 first drying and washing circulating tank, 15 first drying and washing pump, 16 second drying and washing circulating tank, 17 second drying and washing pump, 18 granulating and washing circulating tank, 19 granulating and washing pump, 20 slurry pump, 21 prewashing circulating tank, 22 prewashing circulating pump, 23 phosphoric acid storage tank, 24 phosphoric acid pump and 25 spray head.
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. 2-4, the embodiment of the utility model provides a diammonium tail gas treatment system that area pipeline sprayed, this system includes dry cyclone, fluorine scrubbing tower 8, fluorine scrubbing circulation groove 10, granulation scrubbing tower 5, dry scrubbing tower, pipeline spray structure, venturi scrubber 4, prewashing circulation groove 21, granulation scrubbing circulation groove 18, dust collection scrubbing tower 9, dust collection scrubbing circulation groove 12 and dry scrubbing circulation groove etc.. The drying cyclone separator (connected with the drying device through a pipeline), the drying washing tower and the fluorine washing tower 8 are sequentially connected through a pipeline to form a drying tail gas treatment channel. The tail gas outlet of the granulation washing tower 5 is connected with the fluorine washing tower 8 through a pipeline; the air inlet of the Venturi scrubber 4 is connected with the tail gas outlet of the granulation device 2 through an air outlet pipe 3 with a pipeline spraying structure, and the air outlet of the Venturi scrubber 4 is connected with the air inlet of the granulation washing tower 5 through a pipeline; namely, the granulation device 2, the pipeline spraying structure, the Venturi scrubber 4, the granulation washing tower 5 and the fluorine washing tower 8 are connected in sequence through pipelines to form a granulation tail gas treatment channel. The air inlet of the dust collection washing tower 9 (connected with a cooling device, a screening device, a dust hood at a conveying belt and the like) collects tail gas except dry tail gas and granulation tail gas, and the tail gas outlet of the dust collection washing tower is connected with the air inlet of the fluorine washing tower 8 through a pipeline to form other tail gas treatment channels. The pipeline spraying structure comprises a plurality of (3-6) spray heads 25 arranged in the air outlet pipe 3, and spray liquid inlets (communicated with the spray heads 25) of the spray heads are connected with the prewashing circulation tank 21 through pipelines. The fluorine washing circulation tank 10 and the fluorine washing tower 8 form a circulation spraying structure, and are connected with the dust collection washing circulation tank 12 through pipelines to send washing liquor with certain concentration to the dust collection washing circulation tank 12, and a process water replenishing port for replenishing process water is arranged on the fluorine washing circulation tank 12 (connected with a tap water pipe or a process water collecting tank through a pipeline). Dust collecting and washing circulation tank 12 andthe dust collection washing tower 9 forms a circulating spraying structure and is connected with the drying and washing circulating tank through a pipeline to convey washing liquid with certain concentration to the drying and washing circulating tank. The drying and washing circulation tank and the drying and washing tower form a circulating spraying structure and are connected with the prewashing circulation tank 21 through a pipeline to send washing liquor with certain concentration to the prewashing circulation tank 21. Prewashing circulating tank 21 (washing liquid density 1.50-1.52 g/cm)3And neutralization degree of 0.50-0.55) and the venturi scrubber 4 form a circulating spray structure and are connected with a granulation washing circulating tank 18 (used for sending washing liquid with certain concentration to the granulation washing circulating tank 18) and a phosphoric acid storage tank 23 (used for supplementing phosphoric acid) through pipelines. Granulation washing circulation tank 18 (washing liquid density 1.52 g/cm)3Left and right, neutralization degree 0.55-0.6) and a granulation washing tower 5 form a circulating spray structure, the circulating spray structure is connected with a neutralization reaction tank 1 through a pipeline to send washing liquid with certain concentration to the neutralization reaction tank 1, and the reaction tank 1 is output through a slurry pump 20.
Wherein, referring to fig. 3 and 4, the diameter of the air outlet pipe 3 (inclined straight circular pipe) in the embodiment of the present invention is 0.8-1.3m and the included angle between the air outlet pipe and the horizontal plane is 10-35 °, and the air outlet pipe is inclined downward to the air inlet at the top of the venturi scrubber 4 from the tail gas outlet of the granulation device 2, wherein a nozzle 25 is arranged on the axis of the air outlet pipe at an interval of 1.2-1.8m, and the distance between the uppermost nozzle 25 and the tail gas outlet of the granulation device 2 is greater than 0.5m (preferably less than 1.0 m).
Further, referring to fig. 4, the nozzle 25 of the embodiment of the present invention is disposed toward the air inlet direction of the venturi scrubber 4, and sprays the spray liquid uniformly around to spray out in a conical surface (angle is not required, and cone angle is preferably 90-150 °).
Specifically, the spray head 25 in the embodiment of the present invention is a vortex nozzle and the spraying amount thereof is 30-35m3/h。
Preferably, in order to enhance the washing effect (drying generates a large amount of dust); the number of the drying and washing towers in the embodiment of the utility model is 2, namely a first drying and washing tower 6 and a second drying and washing tower 7; the number of the drying and washing circulation grooves is 2, and the drying and washing circulation grooves are respectively a first drying and washing circulation groove 14 and a second drying and washing circulation groove 16 (the density is 1.15 g/cm)3Degree of neutralization 0.1). The drying cyclone separator, the first drying and washing tower 6, the second drying and washing tower 7 and the fluorine washing tower 8 are sequentially connected through pipelines, the first drying and washing circulation tank 14 and the first drying and washing tower 6 form a circulating spray structure and are connected with the dust collection and washing circulation tank 12 (used for outputting washing liquid with certain concentration to the second drying and washing circulation tank 16) and the second drying and washing circulation tank 16 (used for receiving the washing liquid sent out by the dust collection and washing circulation tank 12) through pipelines, and the second drying and washing circulation tank 16 and the second drying and washing tower 7 form a circulating spray structure and are connected with the prewashing circulation tank 21 through pipelines to send the washing liquid with certain concentration to the prewashing circulation tank 21.
Wherein, the fluorine washing circulation tank 10, the dust collecting washing circulation tank 12, the first drying and washing circulation tank 14, the second drying and washing circulation tank 16, the prewashing circulation tank 21 and the granulating and washing circulation tank 18 in the embodiment of the utility model are all provided with stirrers therein.
Specifically, referring to fig. 3, the fluorine washing circulation tank 10 in the embodiment of the present invention is located directly below the fluorine washing tower 8 (the outlet of the washing liquid at the bottom is output to the tank body through a pipeline to receive the washing liquid) and is connected to the spray liquid inlet of the fluorine washing tower 8 and the dust collecting washing circulation tank 12 through a pipeline (divided into two paths) with the fluorine washing pump 11. The dust collection washing circulation tank 12 is located right below the dust collection washing tower 9 (the outlet of the washing liquid at the bottom is output to the tank body through a pipeline to receive the washing liquid), and is connected with the spray liquid inlet of the dust collection washing tower 9 and the first drying and washing circulation tank 14 through a pipeline (divided into two paths) with a dust collection washing pump 13. The first dry-scrubbing circulation tank 14 is located right below the first dry-scrubbing tower 6 (the outlet of the washing liquid at the bottom is output to the tank body through a pipeline to receive the washing liquid) and is connected with the spray liquid inlet of the first dry-scrubbing tower 6 and the second dry-scrubbing circulation tank 16 through a pipeline (output in two ways) with a first dry-scrubbing pump 15. The second dry-scrubbing circulation tank 16 is located right below the second dry-scrubbing tower 7 (the outlet of the washing liquid at the bottom is output to the tank body through a pipeline to receive the washing liquid), and is connected with the spray liquid inlet of the second dry-scrubbing tower 7 and the prewashing circulation tank 21 through a pipeline (output in two ways) with a second dry-scrubbing pump 17. The prewashing circulation tank 21 is located right below the venturi scrubber 4 (the washing liquid outlet at the bottom is output to the tank body through a pipeline to receive the washing liquid), and is connected with the spraying liquid inlet of the venturi scrubber 4 and the spraying liquid inlet of the pipeline spraying structure (divided into multiple paths) through a pipeline with a prewashing circulation pump 22 (connected with each spray head 25 through a pipeline (provided with a control valve thereon)), the overflow port at the upper part of the prewashing circulation tank is connected with the granulating washing circulation tank 18 (preferably lower than the prewashing circulation tank 21 to realize overflow or obliquely output downwards through an overflow pipe) through a pipeline to overflow the washing liquid to the granulating washing circulation tank 18, and the prewashing circulation tank is connected with the phosphoric acid storage tank 23 through a pipeline with a phosphoric acid pump 24. The granulation washing circulation tank 18 is located right below the granulation washing tower 5 (the washing liquid outlet at the bottom is output to the tank body through a pipeline to receive the washing liquid), and is connected with the spray liquid inlet and the neutralization reaction tank of the granulation washing tower 5 through a pipeline (output in two ways) with a granulation washing pump 19.
The piping between the above structures is provided with pump, blower, valve and/or flow meter, etc. as required, and is well known to those skilled in the art. In this embodiment, "first" and "second" are used only for distinguishing purposes, 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 (7)
1. A diammonium tail gas treatment system with pipeline spraying comprises a drying cyclone separator, a fluorine washing tower (8), a fluorine washing circulating tank (10), a granulation washing tower (5) and a drying washing tower, wherein the drying cyclone separator, the drying washing tower and the fluorine washing tower (8) are sequentially connected through a pipeline, and a tail gas outlet of the granulation washing tower (5) is connected with the fluorine washing tower (8) through a pipeline; it is characterized in that the preparation method is characterized in that,
the system also comprises a pipeline spraying structure, a Venturi scrubber (4), a prewashing circulating tank (21), a granulating and washing circulating tank (18), a dust collecting washing tower (9), a dust collecting washing circulating tank (12) and a drying and washing circulating tank;
the air inlet of the Venturi scrubber (4) is connected with the tail gas outlet of the granulation device (2) through an air outlet pipe (3) with a pipeline spraying structure, and the air outlet of the Venturi scrubber is connected with the air inlet of the granulation washing tower (5) through a pipeline;
the air inlet of the dust collection washing tower (9) collects tail gas except dry tail gas and granulation tail gas, and the tail gas outlet of the dust collection washing tower is connected with the air inlet of the fluorine washing tower (8) through a pipeline;
the pipeline spraying structure comprises a plurality of spray heads (25) arranged in the air outlet pipe (3), and a spraying liquid inlet of the pipeline spraying structure is connected with the prewashing circulation tank (21) through a pipeline;
the fluorine washing circulating tank (10) and the fluorine washing tower (8) form a circulating spraying structure, the circulating spraying structure is connected with the dust collection washing circulating tank (12) through a pipeline, and a process water replenishing port is formed in the circulating spraying structure;
the dust collection washing circulating tank (12) and the dust collection washing tower (9) form a circulating spraying structure and are connected with the drying washing circulating tank through a pipeline;
the drying and washing circulating tank and the drying and washing tower form a circulating spraying structure and are connected with the prewashing circulating tank (21) through a pipeline;
the prewashing circulation tank (21) and the Venturi scrubber (4) form a circulating spraying structure and are connected with the granulating washing circulation tank (18) and the phosphoric acid storage tank (23) through pipelines;
the granulation washing circulating tank (18) and the granulation washing tower (5) form a circulating spraying structure and are connected with the neutralization reaction tank (1) through pipelines.
2. A diammonium tail gas treatment system with pipe spraying according to claim 1, characterized in that the diameter of the air outlet pipe (3) is 0.8-1.3m and the angle between the air outlet pipe and the horizontal plane is 10-35 °, and the air outlet pipe is inclined from the tail gas outlet of the granulation device (2) to the air inlet at the top of the venturi scrubber (4), wherein one spray nozzle (25) is arranged at every 1.2-1.8m on the inner axis, and the distance between the uppermost spray nozzle (25) and the tail gas outlet of the granulation device (2) is more than 0.5 m.
3. A diammonium tail gas treatment system with pipe spraying according to claim 2, characterized in that the spray heads (25) are arranged towards the air inlet direction of the venturi scrubber (4) and spray uniformly all around to spray the spray liquid in a conical surface.
4. A diammonium tail gas treatment system with pipe spraying according to claim 3, characterized in that the spray heads (25) are vortex nozzles and the spraying amount is 30-35m3/h。
5. A diammonium tail gas treatment system with pipe spraying according to claim 1, characterized in that the number of said drying and washing towers is 2, respectively a first drying and washing tower (6) and a second drying and washing tower (7); the number of the drying and washing circulating grooves is 2, and the drying and washing circulating grooves are respectively a first drying and washing circulating groove (14) and a second drying and washing circulating groove (16); the device is characterized in that the drying cyclone separator, the first drying and washing tower (6), the second drying and washing tower (7) and the fluorine washing tower (8) are sequentially connected through pipelines, the first drying and washing circulating tank (14) and the first drying and washing tower (6) form a circulating spraying structure, the circulating spraying structure is connected with the dust collection and washing circulating tank (12) and the second drying and washing circulating tank (16) through pipelines, and the second drying and washing circulating tank (16) and the second drying and washing tower (7) form a circulating spraying structure, and the circulating spraying structure is connected with the prewashing circulating tank (21) through pipelines.
6. A diammonium tail gas treatment system with pipeline spraying according to claim 5, characterized in that stirrers are arranged in the fluorine washing circulation tank (10), the dust collection washing circulation tank (12), the first drying and washing circulation tank (14), the second drying and washing circulation tank (16), the prewashing circulation tank (21) and the granulating and washing circulation tank (18).
7. The diammonium tail gas treatment system with pipe spraying according to claim 5,
the fluorine washing circulating tank (10) is positioned right below the fluorine washing tower (8) and is connected with a spraying liquid inlet of the fluorine washing tower (8) and a dust collection washing circulating tank (12) through a pipeline with a fluorine washing pump (11);
the dust collection washing circulating tank (12) is positioned right below the dust collection washing tower (9) and is connected with a spray liquid inlet of the dust collection washing tower (9) and the first drying washing circulating tank (14) through a pipeline with a dust collection washing pump (13);
the first drying and washing circulating tank (14) is positioned right below the first drying and washing tower (6) and is connected with a spray liquid inlet of the first drying and washing tower (6) and the second drying and washing circulating tank (16) through a pipeline with a first drying and washing pump (15);
the second drying and washing circulating tank (16) is positioned right below the second drying and washing tower (7) and is connected with a spraying liquid inlet of the second drying and washing tower (7) and the prewashing circulating tank (21) through a pipeline with a second drying and washing pump (17);
the prewashing circulation tank (21) is positioned right below the Venturi scrubber (4) and is connected with a spraying liquid inlet of the Venturi scrubber (4) and a spraying liquid inlet of a pipeline spraying structure through a pipeline with a prewashing circulation pump (22), an overflow port at the upper part of the prewashing circulation tank is connected with the granulating washing circulation tank (18) through a pipeline to overflow washing liquid to the granulating washing circulation tank (18), and the prewashing circulation tank is connected with a phosphoric acid storage tank (23) through a pipeline with a phosphoric acid pump (24);
the granulation washing circulating tank (18) is positioned right below the granulation washing tower (5) and is connected with a spraying liquid inlet and a neutralization reaction tank of the granulation washing tower (5) through a pipeline with a granulation washing pump (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921497394.0U CN210964556U (en) | 2019-09-10 | 2019-09-10 | Diammonium tail gas treatment system with pipeline spraying function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921497394.0U CN210964556U (en) | 2019-09-10 | 2019-09-10 | Diammonium tail gas treatment system with pipeline spraying function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210964556U true CN210964556U (en) | 2020-07-10 |
Family
ID=71454841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921497394.0U Active CN210964556U (en) | 2019-09-10 | 2019-09-10 | Diammonium tail gas treatment system with pipeline spraying function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210964556U (en) |
-
2019
- 2019-09-10 CN CN201921497394.0U patent/CN210964556U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101428196A (en) | In-hollow column intercrystalline ammonia process of desulfurization, recovery system and method thereof | |
| CN105056747A (en) | Process and device for removing SO2 from exhaust gas generated by sulfuric acid production in phosphate chemical enterprise | |
| CN107261730A (en) | High temperature coal smoke desulfurization removing nitric system | |
| CN204933240U (en) | Double tower Two-way Cycle Wet Limestone Desulfurization treatment system | |
| CN106237803A (en) | A kind of device to flue gas desulfurization and denitrification simultaneously | |
| CN206008424U (en) | A kind of while component to flue gas desulfurization and denitrification | |
| CN210964556U (en) | Diammonium tail gas treatment system with pipeline spraying function | |
| CN103755393B (en) | Device and method for co-producing potassium sulphate compound fertilizer from tripolycyanamide tail gas | |
| CN101549861B (en) | A diammonium phosphate exhaust washing method | |
| CN113828244A (en) | Magnesium chloride granulation and drying integrated system and method | |
| CN203408621U (en) | Acidic flue gas treatment system | |
| CN204952626U (en) | Gas cleaning equipment of gas -phase oxidation system and this system of application | |
| CN106800276A (en) | Using the industrialized preparing process of sterling sulfur trioxide vapor- phase synthesis chlorosulfonic acid | |
| CN210973890U (en) | Diammonium production system with high ammonia utilization rate and low ammonia discharge | |
| CN208287717U (en) | A kind of water spray scrubbing tower | |
| CN206935095U (en) | A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system | |
| CN110562944B (en) | High-ammonia-utilization-rate low-ammonia-emission-amount diammonium production system and production method | |
| CN212855123U (en) | Tail gas treatment system of NPK compound fertilizer | |
| CN103816753A (en) | Urea dust recycling and reutilizing device | |
| CN203790770U (en) | Recycling device for urea dust | |
| CN207913468U (en) | A kind of device for recovering tail gas in fluosilicic acid concentration process | |
| CN208287790U (en) | A kind of deacidifying flue gas denitrification integrated device | |
| GB1406879A (en) | Method of absorbing waste gases containing nitrogen oxides | |
| CN211159084U (en) | Tail gas treatment device for calcium ammonium nitrate production process | |
| CN205517136U (en) | Exhaust treatment device of paint produce in -process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |