CN209475990U - A kind of ammonia atomization spray gun for denitration - Google Patents

Abstract

The utility model provides a kind of ammonia atomization spray gun for denitration, including gun body, and compressed gas pipeline and ammonia water pipeline are arranged in gun body, and nozzle is arranged in gun body head, and spray orifice is arranged on nozzle, and spray orifice section is fan annular, referred to as fan ring spray hole.The spray orifice of the nozzle setting fan annular of the utility model, forms plane ammonium hydroxide space, ammonium hydroxide is evenly distributed, can be used alone, and the upper layer that can also be used as taper ammonium hydroxide space is used cooperatively, and ammonium hydroxide is made to be evenly distributed, and is mixed with flue gas sufficiently.The ammonia atomization spray gun that spray orifice liquidates with flue gas vertically downward is set, and mixed effect is more preferable.

Description

A kind of ammonia atomization spray gun for denitration

Technical field

The utility model belongs to environmentally friendly low emission field, and in particular to a kind of ammonia atomization spray gun for denitration.

Background technique

The discharge of cement firing system gas is needed by denitration process, and existing processing method includes leading to ammonia atomization It crosses spray gun and sprays into the specific position of rotary kiln burning system.Current existing ammonia-gas spraying device, ammonia atomization spray gun spray orifice are evenly distributed with rifle On the conical surface on body head, the atomized ammonia of ejection forms the space of cone, and some region ammonium hydroxide is more, some region ammonium hydroxide It is few, including cannot being uniformly distributed.And nozzle is arranged near inner wall, and diagonally downward, the spray cone space of formation is also to incline Oblique.Ammonium hydroxide cannot be evenly distributed with, and can not be sufficiently mixed with flue gas.

Summary of the invention

The utility model provides a kind of ammonia atomization spray gun for denitration.

The purpose of this utility model is achieved in that a kind of ammonia atomization spray gun for denitration, including rifle Body, compressed gas pipeline and ammonia water pipeline are arranged in gun body, and gun body head is arranged nozzle, spray orifice, spray orifice section is arranged on nozzle For fan annular, referred to as fan ring spray hole.

It is uniform to fan ring spray hole thickness, fan ring angle is 180 degree.

Nozzle includes spray head and spray seat, and spray seat one end connection spray head, the other end are connected with gun body, setting fan ring spray on spray head Hole；Mixing chamber, mixing chamber connection fan ring spray hole are set inside spray head.

Gun body includes gun body inner tube and the gun body outer tube that is set in gun body inner tube；Gun body inner tube is ammonia water pipeline, gun body It is compressed air pipe between inner tube and gun body outer tube；Spray seat includes inner and outer tubes；Inner tube is connected with gun body inner tube, outer tube and Gun body outer tube is connected.

Inner tube is connect with gun body Internal Pipe Thread, and outer tube and gun body outer tube weld.

Reinforcing rib is arranged in the outer tube outer surface of gun body.

The beneficial effects of the utility model are: the spray orifice of nozzle setting fan annular, forms plane ammonium hydroxide space, ammonium hydroxide distribution Uniformly, it can be used alone, the upper layer that can also be used as taper ammonium hydroxide space is used cooperatively, and so that ammonium hydroxide is evenly distributed, with flue gas Mixing is abundant.

The ammonia atomization spray gun that spray orifice liquidates with flue gas vertically downward is set, and mixed effect is more preferable.

Detailed description of the invention

Fig. 1 is ammonia atomization system ammonium hydroxide major loop schematic diagram.

Fig. 2 is ammonia atomization system ammonium hydroxide lateral schematic diagram.

Fig. 3 is ammonia atomization body of spray gun rifle partial schematic diagram.

Fig. 4 is Fig. 3 elbow part cross-sectional view.

Fig. 5 is nozzle schematic diagram.

Fig. 6 is Fig. 5 cross-sectional view.

Fig. 7 is that spray orifice is the nozzle schematic diagram (hiding spray seat) for fanning ring spray hole.

Fig. 8 is the schematic diagram after Fig. 7 section view.

Fig. 9 is denitration jeting area cylinder and ammonia atomization gun embodiment 1.

Figure 10 is denitration jeting area cylinder and ammonia atomization gun embodiment 2.

Wherein, 1 be denitration jeting area cylinder, 3 be ammonium hydroxide main pipeline, 30 be water inlet, 31 be the pump housing, 32 be filtering Device, 33 be check-valves, 34 be water outlet, 35 be flowmeter, 36 be regulating valve, 37 be pressure reducing valve, 4 be ammonium hydroxide lateral, 40 It is pressure gauge, 5 is ammonia atomization spray gun, 50 is gun body, 51 is nozzle, 52 is spray orifice, 53 is spray head, 54 is spray seat, 55 is mixed Close chamber, 56 be gun body inner tube, 57 be gun body outer tube, 58 be inner tube, 59 be outer tube, 60 be reinforcing rib, 61 be elbow.

Specific embodiment

As shown in Figs. 1-2, a kind of ammonia atomization system is connected at least including ammonium hydroxide main pipeline 3 and with ammonium hydroxide main pipeline 3 Two ammonium hydroxide laterals 4 arranged side by side, ammonium hydroxide lateral 4 connect the water inlet line of ammonia atomization spray gun 5, i.e. gun body inner tube 56；The water inlet 30 being connected with ammonium hydroxide source is arranged in ammonium hydroxide main pipeline 3, and water inlet 30 connects the pump housing 31 by pipeline, and the pump housing 31 is logical Piping is connected to ammonium hydroxide lateral 4.Pressure reducing circuit is set between the outlet and water inlet 30 of the pump housing 31, and pressure reducing circuit includes logical The pressure reducing valve 37 between water inlet 30 and the water outlet of the pump housing 31 is arranged in piping.

Filter 32 is set between water inlet 30 and the import of the pump housing 1, and the outlet of the pump housing 1 connects check-valves 33, check-valves 33 outlet connection left branch pipelines and right branch pipeline；Left branch pipeline is connected by pressure reducing circuit with pressure reducing valve 6, right branch pipe The water outlet 34 of road connection ammonium hydroxide main pipeline 3.Flowmeter 35 and regulating valve 36 are also set up on ammonium hydroxide main line 3.

Flowmeter 35, pressure gauge 40 are set on ammonium hydroxide lateral 4.Filter 32, mistake are also set up on ammonium hydroxide lateral Filter 32 is arranged before flowmeter 35.Here refer to that ammonium hydroxide first passes through filter 32, just reaches flowmeter 35 and pressure before Power table 40.Flowmeter 35, the pressure gauge 40 of each ammonium hydroxide lateral 4 are all disposed in an operation cabinet, facilitate adjusting, conveniently Operation.

As shown in figures 3-8, ammonia atomization spray gun 5 includes gun body 50, and compressed gas pipeline and ammonia water pipe is arranged in gun body 50 The outlet in road, ammonium hydroxide lateral 4 is connected with the ammonia water pipeline of gun body 50.Nozzle 51 is arranged in 50 head of gun body, sets on nozzle 51 Set spray orifice 52.

Nozzle 51 includes spray head 53 and spray seat 54, and 54 one end of spray seat connection spray head 53, the other end are connected with gun body 50, spray head Spray orifice 52 is set on 53；Mixing chamber 55 is set inside spray head 53, and mixing chamber 55 is connected to spray orifice 52.Gun body 50 includes gun body inner tube 56 With the gun body outer tube 57 being set in gun body inner tube 56, gun body inner tube 56 is ammonia water pipeline, gun body inner tube 56 and gun body outer tube 57 Between for compressed air outer tube 59 and 53 outer surface of spray head, screw thread is set, linked together by nut.Pipeline.Spray seat 54 includes Inner tube 58 and outer 59；Inner tube 58 is connected with gun body inner tube 56, and outer tube 59 is connected 57 with gun body outer tube.The outer tube 59 of spray seat 54 and interior Pipe 58 is concentric.The front end of spray seat 54, outer tube 59 and inner tube 58 are close, and ammonium hydroxide and compressed air mix in mixing chamber 55, are formed Atomized ammonia.Screw thread is arranged in outer tube 59 and 53 outer surface of spray head, is linked together by nut.

Inner tube 58 is threadedly coupled with gun body inner tube 56, and outer tube 59 and gun body outer tube 57 weld.Pervious spray gun, spray seat 54 with Gun body 50 is all connected through a screw thread, and compressed air pressure is bigger, is threadedly coupled built on the sand, is connected and sprayed using welding method 54 outer tube 59 of seat and the gun body outer tube 57 of spray gun connect more firm.Reinforcing rib 60 is arranged in 57 outer surface of gun body outer tube, enhances rifle The intensity of external pipe 57.

It is detachably connected between spray seat 54 and spray head 53.Nozzle 51 can be applied using different spray heads 53 in different fields It closes.

As seen in figs. 5-6, a kind of embodiment of nozzle 51, wherein 53 front end of spray head is taper, spray orifice 52 be it is cylindrical or It person's other shapes and is evenly arranged on the tapered surface of 53 front end of spray head, referred to as taper spray orifice vertical with tapered surface.Pass through taper spray orifice The tapered distribution of ammonium hydroxide, lower end area is big, and upper end area is small.This is to be usually used in denitration jeting area cylinder at present except nitre Spray head.

As Figure 7-8, another embodiment of nozzle 51, wherein 52 section of spray orifice on spray head 53 is fan-shaped or fan Annular, referred to as fan ring spray hole.Here the shape of sector or fan annular is to guarantee after ammonium hydroxide sprays in a plane area It is uniformly distributed in domain.It is uniform to fan ring spray hole thickness, fans ring or fan angle is 180 degree.The front end of spray head 53 can be set to Spherical shape, fan ring spray hole are arranged on spherical surface.

As shown in figs. 9-10, nitre device is removed in denitration jeting area cylinder, including denitration jeting area cylinder 1 is protruded on head Ammonia atomization spray gun 5.The nozzle 51 of ammonia atomization spray gun 5 protrudes into denitration jeting area inner barrel, and setting is cut on nozzle 51 Face is the fan ring spray hole of fan annular, and the plane for fanning ring is parallel with denitration jeting area 1 cross section of cylinder.Existing ammonia-gas spraying device, The nozzle 51 of ammonia atomization spray gun 5 is evenly distributed on the conical surface on gun body head, and the atomized ammonia of ejection forms the space of cone. It cannot be evenly distributed in denitration jeting area cylinder, cannot be sufficiently mixed with nitro.In the utility model, atomized ammonia is from fan Shape spray orifice sprays to form fan-shaped plane, and in plane domain, atomized ammonia is evenly distributed, and reacts more abundant.The setting of nozzle 51 exists Near denitration jeting area cylinder inboard wall.Guarantee that 1 section of denitration jeting area cylinder of fan ring spray hole region is evenly distributed with ammonium hydroxide. Fanning ring spray hole can be with reference to the structure in Fig. 7-8.

At least two ammonia atomization spray guns 5 circumferentially can be set in the same cross section of denitration jeting area cylinder 1, guarantee Ammonium hydroxide covers more evenly.Several identical ammonia atomization spray guns can also be set at denitration jeting area cylinder varying cross-section 5.Specific location is set according to temperature field, such as at the top of dore furnace.C5 uptake flue and entrance etc..

Another denitration jeting area cylinder denitrification apparatus, the ammonium hydroxide mist of denitration jeting area cylinder 1 is protruded into including head Change spray gun 5, ammonia atomization spray gun 5 includes the nozzle of gun body 50 and 5 51, and elbow 61 is arranged in 51 head of gun body, and elbow 61 protrudes into denitration In jeting area cylinder 1, downward nozzle 51 is set, nozzle 51 is located in 1 cross section of denitration jeting area cylinder on elbow 61 Between position, the spray orifice 52 that Open Side Down is set on nozzle 51, and spray orifice 52 is evenly arranged on nozzle head along the tapered surface of nozzle 51, claims For taper spray orifice.As seen in figs. 5-6.This structure, ammonium hydroxide spray vertically downward, rush, can adequately mix with Gas phase Smoke.Setting Elbow 61 can smaller ammonium hydroxide and compressed gas turning generate resistance.Taper spray orifice forms cone along conical distribution Ammonium hydroxide distributed area as big as possible can be distributed in denitration jeting area cylinder.

Alternatively, the top setting spray orifice 52 that spray orifice 52 is the ammonia atomization spray gun 5 of taper spray orifice is the ammonium hydroxide for fanning ring spray hole Atomizing lance, fan ring spray hole are protruded into inside denitration jeting area cylinder 1, and plane and the denitration jeting area cylinder 1 for fanning ring are transversal Face is parallel, and nozzle 51 is arranged near denitration jeting area cylinder inboard wall.Although ammonium hydroxide and cigarette that downward taper spray orifice sprays Gas is sufficiently mixed, but the ammonium hydroxide region of taper is not to be evenly arranged in denitration jeting area cylinder, some region ammonium hydroxide are more, have A little regions ammonium hydroxide is few.Setting plane sprays the ammonia atomization spray gun 5 of ammonium hydroxide above, needs the gas of denitration to move up, ammonia Water atomization spray gun 5 sprays ammonium hydroxide vertically downward, is sufficiently mixed with uprising gas.After rising atomized ammonia space of the flue gas by taper Using the ammonium hydroxide space of its top setting plane domain, guarantee process it is every other can with ammonium hydroxide is secondary is sufficiently mixed, It reacts more abundant.

Denitration jeting area cylinder 1 is uniformly distributed along the circumference the ammonia atomization spray gun 5 with taper spray orifice, and taper spray orifice 1 is equal Cloth guarantees that ammonium hydroxide is uniformly distributed in denitration jeting area cylinder as far as possible.Spray orifice is 5 top of ammonia atomization spray gun of taper spray orifice It is transversal to fan ring spray hole and fanning the parallel denitration jeting area cylinder of plane of a loop not in the spray orifice of sustained height 52 to be arranged at least two The ammonia atomization spray gun 5 in face.

When it is implemented, ammonium hydroxide is attracted by the pump housing 31, the water inlet 30 by ammonia atomization system, by filtering, depressurizing Reach ammonium hydroxide lateral 4.Then reach the gun body inner tube 56 of ammonia atomization spray gun 5, gun body outer tube 57 and gun body inner tube 56 it Between be connected to compressed air.Ammonium hydroxide and compressed air are mixed in nozzle 51, spray atomized ammonia by spray orifice 52.It is right in regulator cubicle The conditioning instrumentation 3 of each ammonium hydroxide lateral 4 adjusts, to adjust the pressure of ammonium hydroxide in ammonia atomization spray gun 5.Atomized ammonia spray Denitration jeting area cylinder 1 out needs the gas of denitration to move up from 1 bottom of denitration jeting area cylinder, is arranged below Ammonia atomization spray gun 5 spray ammonium hydroxide vertically downward, be sufficiently mixed with uprising gas.Atomized ammonia of the uprising gas Jing Guo taper is empty Between after using its top setting plane domain ammonium hydroxide space, guarantee that the every other of process can be secondary sufficiently mixed with ammonium hydroxide It closes, reacts more abundant.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Claims (6)

1. a kind of ammonia atomization spray gun for denitration, including gun body, compressed gas pipeline and ammonia water pipeline, rifle are set in gun body Nozzle is arranged in body head, and spray orifice is arranged on nozzle, it is characterised in that: the spray orifice section is fan annular, referred to as fan ring spray hole.

2. a kind of ammonia atomization spray gun for denitration according to claim 1, it is characterised in that: fan ring spray hole thickness Uniformly, fan ring angle is 180 degree.

3. a kind of ammonia atomization spray gun for denitration according to claim 1, it is characterised in that: the nozzle includes spray head And spray seat, spray seat one end connection spray head, the other end are connected with gun body, setting fan ring spray hole on spray head；Setting mixing inside spray head Chamber, mixing chamber connection fan ring spray hole.

4. a kind of ammonia atomization spray gun for denitration according to claim 3, it is characterised in that: the gun body includes gun body Inner tube and the gun body outer tube being set in gun body inner tube；Gun body inner tube is ammonia water pipeline, is between gun body inner tube and gun body outer tube Compressed air pipe；Spray seat includes inner and outer tubes；Inner tube is connected with gun body inner tube, and outer tube is connected with gun body outer tube.

5. a kind of ammonia atomization spray gun for denitration according to claim 4, it is characterised in that: in said inner tube and gun body Pipe screw thread connection, outer tube and gun body outer tube weld.

6. a kind of ammonia atomization spray gun for denitration according to claim 4, it is characterised in that: the gun body outer tube appearance Reinforcing rib is arranged in face.