CN207254063U - A kind of exhaust gas denitration processing system - Google Patents
A kind of exhaust gas denitration processing system Download PDFInfo
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- CN207254063U CN207254063U CN201721928805.8U CN201721928805U CN207254063U CN 207254063 U CN207254063 U CN 207254063U CN 201721928805 U CN201721928805 U CN 201721928805U CN 207254063 U CN207254063 U CN 207254063U
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Abstract
The utility model discloses a kind of exhaust gas denitration processing system, the prior art is solved when carrying out denitration process to burning waste gas, the comburant of burner hearth input is less will to be caused to produce more remaining ammonia, so as to reduce the utilization rate of ammonium hydroxide and cause the technical problem of environmental pollution；Its key points of the technical solution are that：Including ammonia storage tank, water tank, thinning tank and ammonia water spray device, the first pipeline is communicated between the ammonia storage tank and thinning tank, second pipe is communicated between the water tank and thinning tank, the 3rd pipeline is communicated between thinning tank and the ammonia water spray device；First flow regulating valve is provided with first pipeline, second flow regulating valve is provided with the second pipe；Reach the utilization rate that ammonium hydroxide is improved in burning waste gas denitration process and mitigate the beneficial effect of environmental pollution.
Description
Technical field
Technical field of waste gas treatment is the utility model is related to, more specifically, it relates to a kind of exhaust gas denitration processing system.
Background technology
Nitrogen oxides is the gas produced during burning process, it not only stimulates the respiratory system of people, damages dynamic plant
Thing, destroys ozone layer, and is also to cause one of greenhouse effects, acid rain and photochemically reactive main matter.It is right all over the world
The discharge limitation of nitrogen oxides requires all to tend to be stringent, and thermal power plant, garbage burning factory and cement plant etc. are arranged as nitrogen oxides
The main source put, its emission reduction are even more the attention being subject to especially.
The prior art to burning waste gas using ammonium hydroxide when carrying out denitration process, to ensure that the nitrogen oxides in exhaust gas can
Sufficiently reduced, excess of ammonia water can be generally sent in burning waste gas；But in the combustion process of burner hearth, burning is useless
The amount of nitrogen oxides in gas can with comburant put into number change, when put into burner hearth comburant it is less when, send
More remaining ammonia is also produced after the ammonium hydroxide and reaction of nitrogen oxides that enter, so as to reduce the utilization rate of ammonium hydroxide and cause ring
Pollute in border.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of exhaust gas denitration processing system,
The system can improve the utilization rate of ammonium hydroxide in burning waste gas denitration process and mitigate environmental pollution.
To achieve the above object, the utility model provides following technical solution：A kind of exhaust gas denitration processing system, including
Ammonia storage tank, water tank, thinning tank and ammonia water spray device, are communicated with the first pipeline, institute between the ammonia storage tank and thinning tank
State and second pipe is communicated between water tank and thinning tank, the 3rd pipe is communicated between thinning tank and the ammonia water spray device
Road；First flow regulating valve is provided with first pipeline, second flow regulating valve is provided with the second pipe.
Using above-mentioned technical proposal, the first pipeline is controlled by first flow regulating valve and second flow regulating valve respectively
The flow of flow and second pipe, makes the concentration of the ammonium hydroxide in thinning tank after mixed diluting be at consecutive variations state；
When carrying out denitration process to burning waste gas, the concentration of ammonium hydroxide in how much change thinning tanks of comburant can be put into according to burner hearth,
And then the utilization rate of ammonium hydroxide can be improved when the comburant that burner hearth is put into is less, and mitigate environmental pollution.
The utility model is further set, and the ammonia water spray device is two Fluid sprayers, and two Fluid sprayer passes through
3rd pipeline is connected with thinning tank, and high-pressure pump is provided with the 3rd pipeline；Two Fluid sprayer is also associated with the 4th
Pipeline, the other end of the 4th pipeline are connected with air compressor.
Using above-mentioned technical proposal, the ammonium hydroxide that two Fluid sprayers spray has the effect of atomization, makes the nitrogen in burning waste gas
Oxide can further improve the utilization rate of ammonium hydroxide with coming into full contact with and reacting in the ammonium hydroxide of atomization shape.
The utility model is further set, and release of pressure pipe is connected with the top of the ammonia storage tank, is provided with the release of pressure pipe
Pressure relieving valve for one-way conduction release of pressure pipe.
Using above-mentioned technical proposal, when the ammonium hydroxide in ammonia storage tank, which decomposes, produces more ammonia, ammonia storage tank will open, and make
Portion gas in ammonia storage tank discharges, and then the air pressure in ammonia storage tank is tended towards stability, and avoids the gas in ammonia storage tank
Press through height.
The utility model is further set, and the pressure relieving valve includes the first ring body being separately fixed on pressure relieving valve madial wall
With the second ring body, and the spring and spool being arranged between first ring body and the second ring body, one end of the spring with
Second ring body is fixedly connected, and the other end is fixedly connected with spool, and the spool is contacted with the first ring body.
Using above-mentioned technical proposal, when the air pressure in ammonia storage tank less than spring to the elastic force of spool when, spool is in spring
Elastic force effect is lower to be contacted with the first ring body, is truncated release of pressure pipe；When the air pressure in ammonia storage tank is more than spring to spool
During elastic force, pressure official post spool and first ring body at spool both ends are mutually disengaged, and release of pressure pipe is switched on, the part gas in ammonia storage tank
Body discharges.Acted on using the one-way conduction of pressure relieving valve, the air pressure in ammonia storage tank can be made to be not higher than certain certain value, and then avoid
Air pressure in ammonia storage tank is excessive.
The utility model is further set, and it is in frustum that the spool, which is set, and the medial surface of first ring body, which is set, is in
Frustum face, the frustum face of the spool and the medial surface of first ring body contact.
Using above-mentioned technical proposal, when the air pressure in ammonia storage tank less than spring to the elastic force of spool when, the frustum face of spool
Mutually contacted with the medial surface of the first ring body, spool is firmly embedded into inside the first ring body, so as to increase pressure relieving valve
To the leakproofness of blocking into release of pressure pipe, release of pressure pipe, which is less prone to, to leak out.
The utility model is further set, and the medial surface of first ring body is equipped with elastic packing tapered sleeve.
Using above-mentioned technical proposal, when the air pressure in ammonia storage tank less than spring to the elastic force of spool when, spool frustum face with
Elasticity extruding fitting is formed between elastic packing tapered sleeve, reduces the gap between spool frustum face and elastic packing tapered sleeve, from
And further increase pressure relieving valve and leakproofness is blocked to release of pressure pipe；And spool frustum face is supported with the close of elastic packing tapered sleeve
The friction coefficient that is bonded and can also increase between the two is connect, further increases the stability that spool is embedded in behind the first ring body inside.
The utility model is further set, and the ammonia storage tank is connected with ammonia tourie by release of pressure pipe.
Using above-mentioned technical proposal, when the air pressure in ammonia storage tank is more than spring to the elastic force of spool, pressure relieving valve is switched on,
Acid solution that portion gas in ammonia storage tank is discharged into ammonia tourie by release of pressure pipe is simultaneously aerated, the ammonia in gas
Can directly it be discharged after being absorbed by acid solution into air.
In conclusion the utility model mainly has the advantages that：First, according to burner hearth put into comburant number
Change the concentration of ammonium hydroxide in thinning tank, the utilization rate of ammonium hydroxide can be improved when the comburant that burner hearth is put into is less, and mitigate ring
Pollute in border；Second, being acted on by pressure relieving valve the one-way conduction of release of pressure pipe, the air pressure in ammonia storage tank can be made certain not higher than certain
Value, avoids the air pressure in ammonia storage tank excessive.
Brief description of the drawings
Fig. 1 is the attachment structure schematic diagram of the utility model embodiment；
Fig. 2 is the structure sectional view of pressure relieving valve in the utility model embodiment.
Reference numeral：1st, ammonia storage tank；2nd, water tank；3rd, thinning tank；4th, two Fluid sprayer；5th, the first pipeline；51st, it is first-class
Adjustable valve；6th, second pipe；61st, second flow regulating valve；7th, the 3rd pipeline；71st, high-pressure pump；8th, the 4th pipeline；81st, air
Compressor；9th, release of pressure pipe；91st, pressure relieving valve；911st, the first ring body；912nd, the second ring body；913rd, spring；914th, spool；915th, bullet
Property seal taper sleeve；92nd, ammonia tourie.
Embodiment
Elaborate below in conjunction with the accompanying drawings to the technical solution of the utility model.
A kind of exhaust gas denitration processing system, as shown in Figure 1, being sprayed including ammonia storage tank 1, water tank 2, thinning tank 3 and ammonium hydroxide
Injection device, is communicated with the first pipeline 5, second pipe is communicated between water tank 2 and thinning tank 3 between ammonia storage tank 1 and thinning tank 3
6, the 3rd pipeline 7 is communicated between thinning tank 3 and ammonia water spray device, first flow regulating valve is installed on the first pipeline 5
51, second flow regulating valve 61 is installed in second pipe 6.
The ammonium hydroxide that mass concentration is 20% is stored in ammonia storage tank 1, is stored in water tank 2 for the pure of weak ammonia
Water.When first flow regulating valve 51 and second flow regulating valve 61 are opened, in the ammonium hydroxide and water tank 2 in ammonia storage tank 1
Pure water is flowed into thinning tank 3 by the first pipeline 5 and second pipe 6 respectively, progress mixed diluting, the ammonium hydroxide after mixed diluting
Sprayed by the 3rd pipeline 7 from ammonia water spray device to burning waste gas, be reduced the nitrogen oxides in burning waste gas, so that
Burning waste gas is being discharged after denitration process.
Control the flow of ammonium hydroxide and pure water respectively by first flow regulating valve 51 and second flow regulating valve 61, make dilute
The concentration for releasing the ammonium hydroxide in tank 3 after mixed diluting is at consecutive variations state.When the comburant put into burner hearth is more,
More nitrogen oxides will be produced therewith, can increase the stream of ammonium hydroxide in the first pipeline 5 by first flow regulating valve 51 at this time
Amount, the flow of pure water in second pipe 6 is reduced by second flow regulating valve 61, and then increases mixed diluting in thinning tank 3
Ammonia concn afterwards, enables the ammonium hydroxide that ammonia water spray device sprays fully to reduce the nitrogen oxides in burning waste gas；Work as stove
When the comburant put into thorax is less, less nitrogen oxides will be produced therewith, can pass through first flow regulating valve 51 at this time
The flow of ammonium hydroxide in the first pipeline 5 is reduced, increases the flow of pure water in second pipe 6 by second flow regulating valve 61, into
And reduce the ammonia concn in thinning tank 3 after mixed diluting, avoid the ammonia vol of feeding excessive, reduce the burning discharged to air
Remaining ammonia in exhaust gas, so as to improve the utilization rate of ammonium hydroxide, and mitigates environmental pollution.
Specifically, ammonia water spray device can use two Fluid sprayers 4, two Fluid sprayers 4 pass through the 3rd pipeline 7 and thinning tank
3 are connected, and are provided with high-pressure pump 71 on the 3rd pipeline 7；Two Fluid sprayers 4 are also associated with the 4th pipeline 8, and the 4th
The other end of pipeline 8 is connected with air compressor 81.Two Fluid sprayers 4 are mainly made of gun body and nozzle, high pressure aqua ammonia and pressure
Contracting air is entered after gun body mixing by the 3rd pipeline 7 and the 4th pipeline 8 respectively to be sprayed by nozzle, and with the effect of atomization
Fruit, enables the nitrogen oxides in burning waste gas to further improve ammonia with coming into full contact with and reacting in the ammonium hydroxide of atomization shape
The utilization rate of water.
Due to the unstable chemcial property of ammonium hydroxide, easily decompose and produce ammonia, therefore the air pressure in ammonia storage tank 1 and shakiness
It is fixed, the flow of ammonium hydroxide in the first pipeline 5 can be influenced, it may also happen that the accident such as explosion when serious.In order to make the gas in ammonia storage tank 1
Pressure energy enough tends towards stability, and in the present embodiment, the top of ammonia storage tank 1 is connected with the release of pressure pipe 9 being connected with inside ammonia storage tank 1,
Pressure relieving valve 91 for one-way conduction release of pressure pipe 9 is installed on release of pressure pipe 9.When the ammonium hydroxide decomposition generation in ammonia storage tank 1 is more
During ammonia, ammonia storage tank 1 will open, and discharge the portion gas in ammonia storage tank 1, and then make the air pressure in ammonia storage tank 1
Enough tend towards stability, avoid the air pressure in ammonia storage tank 1 excessive.
As depicted in figs. 1 and 2, the concrete structure of pressure relieving valve 91 includes first be separately fixed on 91 madial wall of pressure relieving valve
911 and second ring body 912 of ring body, and spring 913 and spool between the first ring body 911 and the second ring body 912
914, one end of spring 913 is fixedly connected with the second ring body 912, and the other end is fixedly connected with spool 914, spool 914 and first
Ring body 911 contacts.
When the air pressure in ammonia storage tank 1 less than spring 913 to the elastic force of spool 914 when, elastic force of the spool 914 in spring 913
Effect is lower to be contacted with the first ring body 911, is truncated release of pressure pipe 9；When the air pressure in ammonia storage tank 1 is more than spring 913 to valve
During the elastic force of core 914, pressure official post spool 914 and first ring body 911 at 914 both ends of spool are mutually disengaged, and release of pressure pipe 9 is led
Logical, the portion gas in ammonia storage tank 1 discharges.Acted on using the one-way conduction of pressure relieving valve 91, the air pressure in ammonia storage tank 1 can be made
Not higher than certain certain value, and then avoid the air pressure in ammonia storage tank 1 excessive.
In the present embodiment, spool 914 is preferably set in frustum, while the medial surface of the first ring body 911 is set in cone
Table top, when the air pressure in ammonia storage tank 1 less than spring 913 to the elastic force of spool 914 when, frustum face and the first ring body of spool 914
911 medial surface mutually contacts, and spool 914 is firmly embedded into inside the first ring body 911, so as to increase pressure relieving valve 91
To the leakproofness of blocking into release of pressure pipe 9, release of pressure pipe 9, which is less prone to, to leak out.
In order to further improve pressure relieving valve 91 to the leakproofness of blocking into release of pressure pipe 9, in the present embodiment, the first ring body
911 medial surface is fixed with elastic packing tapered sleeve 915；Elastic force when the air pressure in ammonia storage tank 1 less than spring 913 to spool 914
When, elasticity extruding is formed between 914 frustum face of spool and elastic packing tapered sleeve 915 and is bonded, reduces 914 frustum face of spool and bullet
Gap between property seal taper sleeve 915, so that further increase pressure relieving valve 91 blocks leakproofness to release of pressure pipe 9；And valve
914 frustum face of core is bonded the friction coefficient that can also increase between the two with close abut of elastic packing tapered sleeve 915, further increases
The stability for adding spool 914 to be embedded in behind 911 inside of the first ring body.
In the present embodiment, ammonia storage tank 1 is connected with ammonia tourie 92 by release of pressure pipe 9, is stored in ammonia tourie 92
There is acid solution, acid solution here can be hydrochloric acid solution or sulfuric acid solution etc..When the air pressure in ammonia storage tank 1 is more than spring
During the elastic force of 913 pairs of spools 914, pressure relieving valve 91 is switched on, and the portion gas in ammonia storage tank 1 is discharged into ammonia by release of pressure pipe 9 and inhales
Acid solution in closed cans 92 is simultaneously aerated, and the ammonia in gas can be discharged directly after being absorbed by acid solution into air.
Above example is only explanation to the utility model, it is not the limitation to the utility model, this area
Technical staff as needed can make the present embodiment the modification of no creative contribution after this specification is read, but only
All to be protected in the right of the utility model be subject to Patent Law.
Claims (7)
- A kind of 1. exhaust gas denitration processing system, it is characterised in that：Including ammonia storage tank (1), water tank (2), thinning tank (3) and ammonia Water jet device, is communicated with the first pipeline (5), the water tank (2) and dilution between the ammonia storage tank (1) and thinning tank (3) Second pipe (6) is communicated between tank (3), the 3rd pipeline (7) is communicated between the thinning tank (3) and ammonia water spray device； First flow regulating valve (51) is provided with first pipeline (5), second flow adjusting is provided with the second pipe (6) Valve (61).
- A kind of 2. exhaust gas denitration processing system according to claim 1, it is characterised in that：The ammonia water spray device is two Fluid sprayer (4), two Fluid sprayer (4) are connected by the 3rd pipeline (7) with thinning tank (3), the 3rd pipeline (7) On be provided with high-pressure pump (71)；Two Fluid sprayer (4) is also associated with the 4th pipeline (8), the 4th pipeline (8) it is another End is connected with air compressor (81).
- A kind of 3. exhaust gas denitration processing system according to claim 1 or 2, it is characterised in that：The top of the ammonia storage tank (1) Portion is connected with release of pressure pipe (9), and the pressure relieving valve (91) for one-way conduction release of pressure pipe (9) is provided with the release of pressure pipe (9).
- A kind of 4. exhaust gas denitration processing system according to claim 3, it is characterised in that：The pressure relieving valve (91) includes dividing The first ring body (911) and the second ring body (912) not being fixed on pressure relieving valve (91) madial wall, and it is arranged on first ring Spring (913) and spool (914) between body (911) and the second ring body (912), one end and the second ring of the spring (913) Body (912) is fixedly connected, and the other end is fixedly connected with spool (914), and the spool (914) abuts with the first ring body (911) matches somebody with somebody Close.
- A kind of 5. exhaust gas denitration processing system according to claim 4, it is characterised in that：The spool (914) is set Frustum, it is in frustum face that the medial surface of first ring body (911), which is set, the frustum face and described first of the spool (914) The medial surface of ring body (911) contacts.
- A kind of 6. exhaust gas denitration processing system according to claim 5, it is characterised in that：First ring body (911) Medial surface is equipped with elastic packing tapered sleeve (915).
- A kind of 7. exhaust gas denitration processing system according to claim 3, it is characterised in that：The ammonia storage tank (1) is by releasing Pressure pipe (9) is connected with ammonia tourie (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721928805.8U CN207254063U (en) | 2017-12-30 | 2017-12-30 | A kind of exhaust gas denitration processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721928805.8U CN207254063U (en) | 2017-12-30 | 2017-12-30 | A kind of exhaust gas denitration processing system |
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| Publication Number | Publication Date |
|---|---|
| CN207254063U true CN207254063U (en) | 2018-04-20 |
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| CN201721928805.8U Active CN207254063U (en) | 2017-12-30 | 2017-12-30 | A kind of exhaust gas denitration processing system |
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| CN (1) | CN207254063U (en) |
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2017
- 2017-12-30 CN CN201721928805.8U patent/CN207254063U/en active Active
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