CN201940167U - Smoke desulfurization absorption tower system based on ammonia method - Google Patents
Smoke desulfurization absorption tower system based on ammonia method Download PDFInfo
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- CN201940167U CN201940167U CN2011200164535U CN201120016453U CN201940167U CN 201940167 U CN201940167 U CN 201940167U CN 2011200164535 U CN2011200164535 U CN 2011200164535U CN 201120016453 U CN201120016453 U CN 201120016453U CN 201940167 U CN201940167 U CN 201940167U
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- absorption tower
- ammoniacal liquor
- ammonia
- flue gas
- pipe network
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Abstract
The utility model discloses a smoke desulfurization absorption tower system based on an ammonia method, which is composed of an absorption tower and a circulation pipeline system outside the absorption tower, wherein the absorption tower, from top to bottom, comprises a smoke outlet, a demister layer, a demister washing water layer, spray absorbing layers, a smoke inlet and a slurry pool. The interior of the slurry pool comprises a mixer, an aeration oxidation pipe network, an ammonia uniform distribution tube, a spraying circulation liquid outlet, and a slurry discharge port. The circulation pipeline system outside the absorption tower comprises a pipeline, an ammonia uniform distribution machine and a circulating pump. The smoke desulfurization absorption tower system based on the ammonia method is characterized in that the four spray absorbing layers are operated in combination, and due to the meticulous design of a aqueous ammonia adding method, the smoke desulfurization absorption tower system has low ammonia escape rate while having high desulfurization efficiency, and the requirements of ammonia method smoke desulfurization technology can be met well.
Description
Technical field
The utility model relates to the ammonia type flue gas desulfurizing absorption tower system.
Background technology
The ammonia type flue gas desulfurizing technology relies on the SO in the ammonia desulfurization flue gas
2, desulfurization product--ammonium sulfate can be used as chemical fertilizer and is fully utilized, and therefore, the ammonia type flue gas desulfurizing technology has excellent economy.
Absorption tower system is a device crucial in the flue gas desulfurization technique in the flue gas desulfurization technique.Usually, in the design process of the absorption tower system in ammonia type flue gas desulfurizing apparatus, directly use for reference the experience of other wet flue gas desulfurizers, and lack design on the absorption tower system ins and outs targetedly, so, in actual moving process, although absorption tower system can reach higher desulfuration efficiency, but the escaping of ammonia phenomenon is also relatively more serious.If continue to improve desulfuration efficiency, the escaping of ammonia phenomenon just becomes the bottleneck that improves desulfuration efficiency.The escaping of ammonia directly has influence on the economy of ammonia type flue gas desulfurizing technology, can cause secondary pollution again when the escaping of ammonia phenomenon is serious.So the ammonia type flue gas desulfurizing technology must be handled the problem of the escaping of ammonia well.Thus, the ammonia type flue gas desulfurizing absorption tower system is necessary to adopt art designs targetedly.
Summary of the invention
At the problem of the escaping of ammonia in the ammonia type flue gas desulfurizing technology, the utility model provides a kind of novel ammonia type flue gas desulfurizing absorption tower system, can reduce the generation of the escaping of ammonia phenomenon when guaranteeing high desulfurization efficiency.
For reaching above-mentioned purpose, the utility model provides a kind of ammonia type flue gas desulfurizing absorption tower system, it is characterized in that: it comprises absorption tower and tower external circulation line system, and wherein the absorption tower comprises exhanst gas outlet, demister layer, demister flushing water layer, at least three layers of spray absorbed layer, smoke inlet, slurries pond from top to bottom.
On the basis of technique scheme, further comprise attached technical scheme:
Comprise from top to bottom in the pond of slurries described in the utility model that agitator, aeration oxidation pipe network, the uniform pipe network of ammoniacal liquor, the outlet of spray circulation fluid and slurries efflux mouth.
The external circulation line of tower described in the utility model system comprises pipeline, ammoniacal liquor uniform device and circulating pump.
The uniform pipe network of ammoniacal liquor described in the utility model is horizontally disposed below aeration oxidation pipe network, and with aeration oxidation pipe network vertical range greater than 0.5m.
The uniform pipe network of ammoniacal liquor described in the utility model is made of the person in charge and arm, and pipe network plane and absorption tower transverse cross-section parallel, evenly perforate on the person in charge and branch pipe wall peripheral side and the bottom surface wherein is responsible for and the arm pipe end is all shut away from the ammoniacal liquor upstream end, and the perforate aperture is 2mm-10mm.
The absorbed layer of spray described in the utility model is correspondence at least three cover circulating pipe systems respectively, wherein on the circulating pipe system cocycle pump intake piping road of one deck spray absorbed layer correspondence the ammoniacal liquor uniform device are housed at least.
The uniform device of ammoniacal liquor described in the utility model is single tubular type, shut away from the ammoniacal liquor upstream end, tube wall is evenly perforate circumferentially, and the ammoniacal liquor uniform device is inserted into inlet duct inside, with MEDIA FLOW in the inlet duct to vertical, and the hole dimension of perforate on the ammoniacal liquor uniform device tube wall is 2mm-10mm.
The utility model advantage is as follows:
1, three layers of spray absorbed layer move simultaneously, have improved the coverage rate of the absorption liquid that sprays on the cross section of absorption tower, have both improved the spray uniformity of spray absorption liquid, have improved liquid-gas ratio again, have strengthened assimilation effect, can improve smoke desulfurization efficiency.
2, evenly perforate on the tube wall of uniform pipe network of ammoniacal liquor and ammoniacal liquor uniform device guarantees that ammoniacal liquor is distributed in the medium of adding equably, avoids because of the high increase of local ammonia concn ammonia escaped quantity.The equal stringing of ammoniacal liquor in the slurries pond is arranged in aeration oxidation tube portion off the net, has reduced ammonia along with oxidation escapes into the possibility in the gas phase flue gas on the slurries pond with air.
3, the distinctive configuration of three layers of spraying layer has reduced the possibility that the escaping of ammonia phenomenon takes place.Basecoat spray absorbed layer absorbs the part SO in the flue gas in advance
2, SO in the flue gas that the absorption liquid of feasible and middle one deck spray absorbed layer spray contacts
2Content is low slightly, so contact with the absorption liquid that contains ammonia and reduced the aerocolloidal possibility of generation ammonium sulfite, and the control that aerosol is generated can fundamentally suppress the escaping of ammonia.Uppermost spray absorbed layer has played SO in the further reduction flue gas
2The effect of the ammonia of catching the part escape is also played in the effect of content simultaneously.
4, ammoniacal liquor joins in the desulphurization absorption tower system at different parts respectively, increased the flexibility of ammoniacal liquor adding mode on the one hand, be convenient to the adjusting of ammoniacal liquor addition, on the other hand, sweetening process is often measured hysteresis quality because of the pH value and is caused ammoniacal liquor excessive, and this is a key factor that causes the escaping of ammonia, so separating the adding mode, ammoniacal liquor improved process characteristic, the hysteresis effect that makes the pH value measure is inhibited, and has reduced the escaping of ammonia indirectly, has improved the ammonia utilization rate.
5, the ammoniacal liquor in the slurries pond adds the implantation site and is positioned at aeration oxidation tube portion off the net, the slurries that make ammoniacal liquor add top, implantation site can keep local lower pH value in the short time, lower slurry pH value provides advantageous conditions for the air oxidation ammonium sulfite, and having avoided influences slurry pH value and then have influence on oxidation reaction because of ammoniacal liquor adds.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Fig. 1 is the structural representation of the utility model embodiment, and wherein pictorial representation is as follows :-a-flue gas stream ,-b-air ,-c-ammoniacal liquor ,-d-slurries ,-e-fresh water (FW).
The specific embodiment
Embodiment: the utility model provides a kind of specific embodiment of ammonia type flue gas desulfurizing absorption tower system, it comprises absorption tower 31 and tower external circulation line system (20,21,22,23), and wherein absorption tower 31 comprises exhanst gas outlet 7, two-stage demister layer (5,6), three layers of demister flushing water layer (8,9,10), four layers of spray absorbed layer (1,2,3,4), smoke inlet 11, slurries pond 12 from top to bottom.Comprise from top to bottom in the slurries pond 12 that agitator 13, aeration oxidation pipe network 14, the uniform pipe network 28 of ammoniacal liquor, spray circulation fluid outlet (16,17,18,19) and slurries efflux mouth 15.Quadruplet tower external circulation line system (20,21,22,23) is arranged outside the absorption tower 31, connect corresponding spray circulation fluid outlet (16,17,18,19) and spray absorbed layer (1,2,3,4) respectively, the intrasystem liquid of every cover tower external circulation line relies on corresponding circulating pump (24,25,26,27) supercharging to carry.In the tower external circulation line system (21,22) that only middle two layers of spraying layer (2,3) are corresponding in four layers of spray absorbed layer (1,2,3,4) the ammoniacal liquor adding apparatus is housed, i.e. ammoniacal liquor uniform device (29,30).
The uniform pipe network 28 of ammoniacal liquor in the slurries pond 12 is the plane ductwork type, constitute by the person in charge and arm, pipe network plane and absorption tower transverse cross-section parallel are responsible for and branch pipe wall side and all evenly perforates of bottom surface, wherein all shut away from the person in charge and the arm pipe end of ammoniacal liquor upstream end.Ammoniacal liquor uniform device (29,30) is single tubular type, shuts away from the ammoniacal liquor upstream end, and tube wall is all evenly perforates circumferentially.Ammoniacal liquor uniform device (29,30) is inserted into inlet duct inside, with inlet duct in MEDIA FLOW to vertical.Equal stringing of ammoniacal liquor and ammoniacal liquor uniform device (29,30) upper tube wall perforate hole dimension is 2mm-10mm.The uniform pipe network 28 of ammoniacal liquor is installed in aeration oxidation pipe network 14 belows in the slurries pond, and vertical range is not less than 0.5m between the two.
The smoke inlet 11 of flue gas stream a self-absorption tower 31 enters, upwards successively with the absorption liquid counter current contacting of spray absorbed layer 1,2 or 3,4 sprays, SO in the flue gas
2Be absorbed by liquid absorption and remove, remove SO
2After flue gas after the moisture that major part carries is removed at demister layer 5 and 6 places, discharge successively from exhanst gas outlet 7.Can be stopped up by the wet dirt in the flue gas gradually in the demister layer course of work, increase the flow of flue gas resistance, therefore demister flushing water layer (8,9,10) need regularly spray into fresh water (FW) e, with the lower surface of the upper and lower surface of flushing demister layer 5 and demister 6 to eliminate stopping state.The absorption of coming out from spray absorbed layer 1,2 or 3,4 sprays SO
2Absorption liquid drop in the slurries pond 12,12 tops, slurries pond have agitator 13 to carry out the stirring of slurries d, downward again, be furnished with aeration oxidation pipe network 14 in the slurries pond 12, air b is blasted in the slurries pond 12 by aeration oxidation pipe network 14, and slurries d is carried out oxidation, sulfite oxidation is wherein become sulfate, in 12 bottoms, slurries pond, there are slurries to efflux mouth 15, sulfate (ammonium sulfate) solution that oxidation is generated effluxes to handle.12 bottoms, slurries pond also have four spray circulation fluid outlets (16,17,18,19).And spray circulation fluid outlet (16,17,18,19) is connected with spray absorbed layer (1,2,3,4) by corresponding tower external circulation line system (20,21,22,23) respectively.Carry the spray absorption liquid to there being circulating pump (24,25,26,27) to be responsible for supercharging respectively in the tower external circulation line system (20,21,22,23).In the absorption tower system running, make in four layers the operation of three layers of spray absorbed layer, stoppage in transit one deck is done standby in middle two layers.In the sweetening process, for absorption liquid after recovering desulfurization absorbs SO
2Ability, the absorption tower system domestic demand will constantly add ammoniacal liquor c.And the ammoniacal liquor c that is used for recovering the absorption liquid absorbability divides two parts to join absorption tower system, a part joins in the slurries pond 12 equably by the uniform pipe network 28 of ammoniacal liquor, and a part joins in corresponding tower external circulation line system 21 or 22 by ammoniacal liquor uniform device (29,30) in addition.The installation site of ammoniacal liquor uniform device (29,30) is that ammoniacal liquor c relies on ammoniacal liquor uniform device (29,30) to inject equably on the corresponding inlet duct that sprays between circulation fluid outlet (17,18) and corresponding circulating pump (25,26) inlet.
The part that the utility model is not described in detail is a known technology.
Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, or any to move mode dull and stereotyped described in the utility model, all drop within the utility model rights protection scope.
Claims (7)
1. ammonia type flue gas desulfurizing absorption tower system, it is characterized in that: it comprises absorption tower and tower external circulation line system, and wherein the absorption tower comprises exhanst gas outlet, demister layer, demister flushing water layer, at least three layers of spray absorbed layer, smoke inlet, slurries pond from top to bottom.
2. ammonia type flue gas desulfurizing absorption tower system as claimed in claim 1 is characterized in that: comprise from top to bottom in the described slurries pond that agitator, aeration oxidation pipe network, the uniform pipe network of ammoniacal liquor, the outlet of spray circulation fluid and slurries efflux mouth.
3. ammonia type flue gas desulfurizing absorption tower system as claimed in claim 1 is characterized in that: described tower external circulation line system comprises pipeline, ammoniacal liquor uniform device and circulating pump.
4. ammonia type flue gas desulfurizing absorption tower system as claimed in claim 2 is characterized in that: the uniform pipe network of described ammoniacal liquor is horizontally disposed below aeration oxidation pipe network, and with aeration oxidation pipe network vertical range greater than 0.5m.
5. ammonia type flue gas desulfurizing absorption tower system as claimed in claim 4, it is characterized in that: the uniform pipe network of described ammoniacal liquor is made of the person in charge and arm, and pipe network plane and absorption tower transverse cross-section parallel, evenly perforate on the person in charge and branch pipe wall peripheral side and the bottom surface, wherein the person in charge and arm pipe end are all shut away from the ammoniacal liquor upstream end, and the perforate aperture is 2mm-10mm.
6. ammonia type flue gas desulfurizing absorption tower system as claimed in claim 3, it is characterized in that: described spray absorbed layer is correspondence at least three cover tower external circulation line systems respectively, wherein on the tower external circulation line system cocycle pump intake piping road of one deck spray absorbed layer correspondence the ammoniacal liquor uniform device are housed at least.
7. ammonia type flue gas desulfurizing absorption tower system as claimed in claim 6, it is characterized in that: described ammoniacal liquor uniform device is single tubular type, shut away from the ammoniacal liquor upstream end, tube wall is evenly perforate circumferentially, the ammoniacal liquor uniform device is inserted into inlet duct inside, with MEDIA FLOW in the inlet duct to vertical, and the hole dimension of perforate on the ammoniacal liquor uniform device tube wall is 2mm-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200164535U CN201940167U (en) | 2011-01-19 | 2011-01-19 | Smoke desulfurization absorption tower system based on ammonia method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200164535U CN201940167U (en) | 2011-01-19 | 2011-01-19 | Smoke desulfurization absorption tower system based on ammonia method |
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| CN201940167U true CN201940167U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200164535U Expired - Fee Related CN201940167U (en) | 2011-01-19 | 2011-01-19 | Smoke desulfurization absorption tower system based on ammonia method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272468A (en) * | 2013-06-13 | 2013-09-04 | 北京中环新锐环保技术有限公司 | Absorption tower for simultaneously removing sulfur dioxide and nitrogen oxide in smoke |
| CN105311948A (en) * | 2014-07-30 | 2016-02-10 | 山西易通环保技术有限公司 | Multi-effect flue gas purification absorption tower |
| CN107198942A (en) * | 2017-07-12 | 2017-09-26 | 楚雄滇中有色金属有限责任公司 | Reproduce relieving haperacidity at initial stage tail gas by ammonia method desulphurization system and its method of controlling operation thereof |
-
2011
- 2011-01-19 CN CN2011200164535U patent/CN201940167U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272468A (en) * | 2013-06-13 | 2013-09-04 | 北京中环新锐环保技术有限公司 | Absorption tower for simultaneously removing sulfur dioxide and nitrogen oxide in smoke |
| CN105311948A (en) * | 2014-07-30 | 2016-02-10 | 山西易通环保技术有限公司 | Multi-effect flue gas purification absorption tower |
| CN107198942A (en) * | 2017-07-12 | 2017-09-26 | 楚雄滇中有色金属有限责任公司 | Reproduce relieving haperacidity at initial stage tail gas by ammonia method desulphurization system and its method of controlling operation thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Man Inventor before: Jin Fei Inventor before: Xu Hengming |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JIN FEI XU HENGMING TO: WANG MAN |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Qinghai Environmental Science and Technology Co., Ltd. Assignor: Nanjing Qinghai Environmental Protection Equipment Co., Ltd. Contract record no.: 2014320000516 Denomination of utility model: Smoke desulfurization absorption tower system based on ammonia method Granted publication date: 20110824 License type: Exclusive License Record date: 20140625 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20160119 |
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| EXPY | Termination of patent right or utility model |