CN103977693A - Pneumatic emulsion ammonium carbonate desulfurization system and technological process thereof - Google Patents
Pneumatic emulsion ammonium carbonate desulfurization system and technological process thereof Download PDFInfo
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Abstract
The invention discloses a pneumatic emulsion ammonium carbonate desulfurization system and a technological process thereof. The pneumatic emulsion ammonium carbonate desulfurization system comprises an absorption device, an impurity removing device, a neutralizing device and a separating and recycling device, wherein the absorption device comprises a plurality of groups of absorption tower assemblies which are independent with one another and are used for processing SO2 smoke with different concentrations; each group of absorption tower assemblies comprises a dust removing tower and at least one desulfurization tower; a smoke outlet is formed in the top of each dust removing tower; a liquid outlet is formed in the bottom of each dust removing tower, integrally molded with a circulation barrel and communicated with the circulation barrel; each desulfurization tower and each dust removing tower are same in structure; a liquid outlet of each desulfurization tower is separated from a circulation pond; the impurity removing device is circularly communicated with the circulation barrels; each circulation pond is circularly communicated with the separating and recycling device through the neutralizing device. According to the system and the technological process, the system is simple; the process is easy to operate; the dust removal and desulfurization efficiency is high; by-products can be recycled; the secondary pollution is avoided.
Description
Technical field
The present invention relates to environmental protection equipment technical field, particularly relate to a kind of Pneumatic emulsifying carbon ammonium desulphurization system and technological process thereof.
Background technology
In the various gaseous contaminants that air quality is impacted, SO
2the quantity of flue gas is maximum, affects the widest.In actual industrial production, same factory building, often exists a plurality of flue gases that source occurs, and the flue gas of flue gas generation source emission contains a large amount of dust and SO
2, and the concentration that source and another flue gas generation source emission dust contained flue gas sulfur-bearing occur common flue gas often differs, as the smoke evacuation boiler under many that arrange in factory building different environments for use.For cost-saving, improve desulfuration efficiency, when desulfurization is processed, need to be by different flue gas sources separately dedusting, desulfurization integrated treatment again in desulfurizing tower, this sweetening process is had higher requirement to desulphurization system.
Current extensive use flue gas wet desulphurization process, is absorbing SO
2during flue gas, existing desulfurizing tower can not distinguished SO conventionally
2flue gas concentration and unified absorption, cause the SO of multiply variable concentrations
2flue gas glue sulphur efficiency is uneven, can not meet discharge standard simultaneously.And existing desulfurizing tower band slurry nozzle, this nozzle easily stops up and affects the operation of flue gas, and dedusting and desulfuration efficiency are low.
In addition,, in existing sulfur removal technology, ammonia, ammoniacal liquor and solid ammonium bicarbonate all can be for the preparation of absorbing SO
2desulfurization absorbent, material is easy to get, cost is low.And existing wet desulfurization system is complicated, operating procedure is loaded down with trivial details, dedusting and desulfuration efficiency are on the low side, and in addition, operating cost is high, and byproduct for treatment is dealt with improperly, even cause for the second time and pollute.
Summary of the invention
The invention provides a kind of Pneumatic emulsifying carbon ammonium desulphurization system and technological process thereof, in order to overcome wet desulfurization system of the prior art complicated, cannot be according to dust in flue gas and SO
2respectively dedusting and desulfurization of concentration, operating procedure loaded down with trivial details, dedusting and desulfuration efficiency are on the low side and easily cause the technological deficiency of secondary pollution.
The invention provides a kind of Pneumatic emulsifying carbon ammonium desulphurization system, comprise absorption plant, knot screen, neutralising arrangement and separating and reclaiming device, wherein: described absorption plant comprises that some groups are processed different SO
2the separate absorption tower assembly of flue gas concentration, each is organized described absorption tower assembly and comprises a gas wash tower and at least one desulfurizing tower, described gas wash tower top is provided with exhanst gas outlet, bottom is provided with liquid outlet, described liquid outlet and circulation barrel are one-body molded and connect, the zone line of described gas wash tower comprises from bottom to top successively: the equal air chamber that is provided with smoke inlet, He Chu fog chamber, turbulent flow aeration zone, the internal interval of described turbulent aeration zone is provided with at least two-layer turbulator for flue gas Spin-up, the inlet of described gas wash tower is positioned at the side of described turbulent aeration zone and is positioned at the top of described turbulator, the exhanst gas outlet of described gas wash tower is communicated with the smoke inlet of desulfurizing tower described in rear one-level, and the exhanst gas outlet of adjacent two described desulfurizing towers is communicated with smoke inlet, described desulfurizing tower is identical with the structure of described gas wash tower, and the liquid outlet of described desulfurizing tower and circulatory pool apart arrangement, described knot screen is communicated with described circulation barrel circulation, described circulatory pool is communicated with described separating and reclaiming device circulation by described neutralising arrangement.
Preferably, described system also comprises fresh water source, described fresh water source and described circulation barrel, circulatory pool, and the fog chamber that removes of described gas wash tower and desulfurizing tower is communicated with respectively.
Preferably, described circulation barrel is communicated with respectively with equal air chamber and the turbulent aeration zone of described gas wash tower by circulating pump and pipeline; In described circulatory pool, be provided with mixer and drain hopper, described circulatory pool is communicated with respectively with equal air chamber and the turbulent aeration zone of described desulfurizing tower by circulating pump and pipeline.
Preferably, described knot screen comprises sedimentation basin and clear liquid pump, described sedimentation basin is divided into settling zone and clear liquid area by overflow plate, and described settling zone is communicated with the liquid outlet of described circulation barrel, and the clear liquid of described clear liquid area pumps in described circulation barrel by described clear liquid pump and pipeline.
Preferably, described separating and reclaiming device comprises filter centrifugal, reservoir and the filtrate pump connecting in turn, in described reservoir, is provided with overflow plate.
Preferably, described absorption plant comprises two groups of absorption tower assemblies, described in first group, absorption tower assembly comprises a gas wash tower and a desulfurizing tower, and described in second group, absorption tower assembly comprises a gas wash tower and two desulfurizing towers, all corresponding described circulatory pool of the liquid outlet of desulfurizing tower described in each.
The technological process of a kind of Pneumatic emulsifying carbon ammonium desulfurization is also provided for realizing the object of the invention, comprises the steps:
Step S100, absorption process; Speed drops into the absorption liquid that solid carbon ammonium forms carbonic hydroammonium in circulatory pool in accordance with regulations, in circulation barrel, adds fresh water as dedusting liquid; Containing dust and SO
2flue gas by gas wash tower by dedusting, the sulfur-containing smoke gas after dedusting enters desulfurizing tower, reacts SO with the absorption liquid generation Pneumatic emulsifying meeting
2be absorbed:
2NH
4HCO
3+SO
2→(NH
4)
2SO
3+H
2O+2CO
2，
(NH
4)
2SO
3+SO
2+H
2O→2NH
4HSO
3；
Step S200, neutralisation treatment; The absorption liquid that circulatory pool includes ammonium bisulfite imports in neutralising arrangement, makes it to occur neutralization reaction to the carbonic hydroammonium that adds solid in described neutralising arrangement simultaneously:
NH
4HSO
3+NH
4HCO
3→(NH
4)
2SO
3+H
2O+CO
2；
Step S300, separated removal process; The neutralizer that described neutralising arrangement includes saturated ammonium sulfite solution imports separating and reclaiming device, described separating and reclaiming device is by saturated ammonium sulfite solution Separation of Solid and Liquid, isolate solid-state ammonium sulfite white crystal and be packaged into byproduct, containing the filtrate of ammonium sulfite, get back in described circulatory pool and recycle simultaneously;
The processing of the dedusting liquid of step S400, dust-laden; Dust-laden dedusting liquid in described circulation barrel imports precipitation in knot screen, and the clear liquid after precipitation is got back in described circulation barrel and recycled;
Step S500, fluid infusion, flushing; Fresh water source is to fluid infusion in described circulatory pool and circulation barrel, described fresh water source rinse described gas wash tower and desulfurizing tower except fog chamber.
Beneficial effect of the present invention comprises:
A kind of emulsification carbon ammonium desulphurization system provided by the invention, a kind of Pneumatic emulsifying carbon ammonium desulphurization system of the present invention, comprise absorption plant, knot screen, neutralising arrangement and separating and reclaiming device, simple in structure, when the flue gas of pending many groups flue gas source emission is containing dust and SO
2when concentration is inconsistent, the absorption tower assemblies that many groups are mated with flue gas source are set, for dedusting and desulfurization to meet fume emission requirement.The turbulent aeration zone of its tower main body is the core space of flue gas and slurry reaction, and flue gas is forced to Spin-up during through two-layer turbulator at least, and with slurries generation emulsification desulphurization reaction, dust-removal and desulfurizing efficiency improves greatly.Compare with the desulfurizing tower of slurry nozzle with tradition, native system does not arrange nozzle, makes flue gas operation unobstructed.Its absorption plant is used for providing gas-liquid contact place, and the dedusting and the desulfurization that complete in flue gas are processed; Knot screen falls the contaminant filters such as dust of dust-laden absorption liquid, clear liquid is sent into circulation barrel again and recycle; Neutralising arrangement, for by being the acid absorption liquid containing ammonium bisulfite, with alkaline carbonic hydroammonium neutralization reaction, generates ammonium sulfite; Separating and reclaiming device carries out Separation of Solid and Liquid by the slurries after neutralization, reclaims solid product ammonium sulfite and containing the filtrate of ammonium sulfite.
The technological process of a kind of emulsification carbon ammonium provided by the invention desulfurization, easy and simple to handle, dust-removal and desulfurizing efficiency is high, and byproduct recoverable avoids causing secondary pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Pneumatic emulsifying carbon ammonium desulphurization system of the present invention;
Fig. 2 is a kind of Pneumatic emulsifying carbon ammonium desulfurization process schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and by the specific embodiment, further illustrate technical scheme of the present invention:
As shown in Figure 1, the invention provides a kind of Pneumatic emulsifying carbon ammonium desulphurization system, comprise absorption plant 30, knot screen 40, neutralising arrangement 50 and separating and reclaiming device 60, wherein: absorption plant 30 comprises that some groups are processed different SO
2the separate absorption tower assembly of flue gas concentration, each group absorption tower assembly comprises a gas wash tower 1 and at least one desulfurizing tower 2, gas wash tower 1 top is provided with exhanst gas outlet 11, bottom is provided with liquid outlet, liquid outlet and circulation barrel 12 are one-body molded and connect, the zone line of gas wash tower 1 comprises from bottom to top successively: the equal air chamber 13 that is provided with smoke inlet, 14He Chu fog chamber, turbulent flow aeration zone 15, the internal interval of turbulent flow aeration zone 14 is provided with at least two-layer turbulator 140 for flue gas Spin-up, the inlet of gas wash tower 1 is positioned at the side of turbulent aeration zone 14 and is positioned at the top of turbulator 140, the exhanst gas outlet 11 of gas wash tower 1 is communicated with the smoke inlet of the desulfurizing tower 2 of rear one-level, and the exhanst gas outlet of adjacent two desulfurizing towers 2 is communicated with smoke inlet, desulfurizing tower 2 is identical with the structure of gas wash tower 1, and the liquid outlet 22 and circulatory pool 3 apart arrangement of desulfurizing tower 2, knot screen 40 is communicated with circulation barrel 12 circulations, circulatory pool 3 is communicated with separating and reclaiming device 60 circulations by neutralising arrangement 50.
It should be noted that, in actual industrial production, same factory building, the flue gas of different flue gas source emissions is containing dust and SO
2when concentration is inconsistent, absorption plant 30 arranges some groups and processes different SO
2the separate absorption tower assembly of flue gas concentration, and can be according to the SO of each flue gas source emission
2flue gas and containing the concentration of dust, extrapolates the gas wash tower 1 that needs and the quantity of desulfurizing tower 2, to meet the emission request of flue gas ash removal and desulfurization.
The turbulent aeration zone 14 of native system is the core space of flue gas and slurry reaction, the inlet of turbulator 140 tops sprays downwards, meanwhile, flue gas is forced to Spin-up during through at least two-layer turbulator 140, form the turbulent condition of similar cyclone, the liquid spraying is downwards subject to carrying in a large number the upwards effect of rotary-cut flue gas stream of kinetic energy, by high speed shear, form the fine particle water droplet disperseing, and air-flow is by under the shearing of the reaction force of liquid, also be dispersed into tiny bubble, gas phase and liquid phase continue collision rotary-cut, thereby produce the emulsification desulfurization state that gas-liquid is wrapped up mutually, this process can be strengthened the contact area of gas phase and liquid phase, the speed of time of contact and Surface Renewal, thereby greatly improve the reaction rate of gas-liquid, make the mass-transfer efficiency of gas-liquid two-phase improve 10%～20%, greatly improve the desulfuration efficiency of system.
Compare with the desulfurizing tower of slurry nozzle with tradition, native system does not arrange nozzle, makes flue gas operation unobstructed, and the structure of the turbulator 140 of turbulent aeration zone 14 makes gas-liquid generation emulsification desulphurization reaction, and dust-removal and desulfurizing efficiency improves greatly.System of the present invention also comprises circulatory pool 3 and separating and reclaiming device 60, and system architecture is simple, not only can recycle slurries, reduces costs, and also recyclable byproduct, avoids causing secondary pollution.
In addition, its absorption plant 30 is for providing gas-liquid contact place, and the dedusting and the desulfurization that complete flue gas are processed; Knot screen 40 falls the contaminant filters such as dust of dust-laden absorption liquid, clear liquid is sent into circulation barrel 12 again and recycle; Neutralising arrangement 50, for by being the acid absorption liquid containing ammonium bisulfite, with alkaline carbonic hydroammonium neutralization reaction, generates ammonium sulfite; Separating and reclaiming device 60 carries out Separation of Solid and Liquid by the slurries after neutralization, reclaims solid product ammonium sulfite and containing the filtrate of ammonium sulfite.
A kind of Pneumatic emulsifying carbon ammonium desulphurization system of the present invention also comprises fresh water source 7, and fresh water source 7 is communicated with circulation barrel 12, circulatory pool 3, for fluid infusion.Fresh water source 7 is communicated with respectively with the fog chamber that removes of gas wash tower 1 and desulfurizing tower 2, for washing punching, avoids obstruct smoke passage.
Preferably, circulation barrel 12 is communicated with respectively with equal air chamber 13 and the turbulent aeration zone 14 of gas wash tower 1 by circulating pump and pipeline; In circulatory pool 3, be provided with mixer 31 and drain hopper 32, circulatory pool 3 is communicated with respectively with equal air chamber and the turbulent aeration zone of desulfurizing tower 2 by circulating pump and pipeline.
Particularly, knot screen 40 comprises sedimentation basin 41 and clear liquid pump 43, and sedimentation basin 41 is divided into settling zone and clear liquid area by overflow plate, and settling zone is communicated with the liquid outlet of circulation barrel 12, and the clear liquid of clear liquid area pumps in circulation barrel 12 by clear liquid pump 43 and pipeline.The impurity such as the dust in flue gas are discharged circulation barrel 12 through settling zone, come back to circulation barrel 12 recycle for the clear liquid of dedusting, simple in structure, reduce production costs.
Separating and reclaiming device 60 comprises filter centrifugal 61, reservoir 62 and the filtrate pump 63 connecting in turn, in reservoir 62, is provided with overflow plate.
In specific embodiments of the invention, comprise the first flue gas source and the second flue gas source, the SO in the second flue gas source
2the concentration ratio first flue gas source of flue gas and dust is high, this absorption plant 30 comprises two groups of absorption tower assemblies that mate with first and second flue gas source respectively, first group of absorption tower assembly comprises a gas wash tower 1 and a desulfurizing tower 2, second group of absorption tower assembly comprises a gas wash tower 1 and two desulfurizing towers 2, all corresponding circulatory pool 3 of the liquid outlet of each desulfurizing tower 2.After gas wash tower 1 dedusting of the flue gas in the first flue gas source by first group of absorption tower assembly and desulfurizing tower 2 desulfurization, by the exhanst gas outlet of desulfurizing tower 2, discharged, after gas wash tower 1 dedusting of the flue gas in the second flue gas source by second group of absorption tower assembly and two desulfurizing tower 2 desulfurization, by the exhanst gas outlet of desulfurizing tower 2, discharged, the flue gas after two bursts of processing converges together and enters atmosphere through chimney.
Based on same inventive concept, the embodiment of the present invention also provides the technological process of a kind of Pneumatic emulsifying carbon ammonium desulfurization, because the principle that the method is dealt with problems is similar to the various functions of aforementioned a kind of Pneumatic emulsifying carbon ammonium desulphurization system, therefore, the enforcement of the method can realize by aforementioned system concrete function, repeats part and repeats no more.
Accordingly, referring to Fig. 2, the technological process of a kind of Pneumatic emulsifying carbon ammonium desulfurization that the embodiment of the present invention also provides, comprises the steps:
Step S100, absorption process; Speed drops into the absorption liquid that solid carbon ammonium forms carbonic hydroammonium in circulatory pool 3 in accordance with regulations, as dedusting liquid, cost-saving to the interior interpolation fresh water of circulation barrel 12; Containing dust and SO
2flue gas by gas wash tower 1 by dedusting, the sulfur-containing smoke gas after dedusting enters desulfurizing tower 2, reacts SO with the absorption liquid generation Pneumatic emulsifying meeting
2be absorbed:
2NH
4HCO
3+SO
2→(NH
4)
2SO
3+H
2O+2CO
2，
(NH
4)
2SO
3+SO
2+H
2O→2NH
4HSO
3；
Step S200, neutralisation treatment; The absorption liquid that circulatory pool 3 includes ammonium bisulfite imports in neutralising arrangement 50, and the carbonic hydroammonium to the interior interpolation solid of neutralising arrangement 50 makes it to occur neutralization reaction: NH simultaneously
4hSO
3+ NH
4hCO
3→ (NH
4)
2sO
3+ H
2o+CO
2;
Step S300, separated removal process; The neutralizer that neutralising arrangement 50 includes saturated ammonium sulfite solution imports separating and reclaiming device 60, separating and reclaiming device 60 is by saturated ammonium sulfite solution Separation of Solid and Liquid, isolate solid-state ammonium sulfite white crystal and be packaged into byproduct, containing the filtrate of ammonium sulfite, get back in circulatory pool 3 and recycle simultaneously;
The processing of the dedusting liquid of step S400, dust-laden; Dust-laden dedusting liquid in circulation barrel 12 imports the interior precipitation of knot screen 40, and the clear liquid after precipitation is got back in circulation barrel 12 and recycled;
Step S500, fluid infusion, flushing; Fresh water source 7 is to circulatory pool 3 and the interior fluid infusion of circulation barrel 12, and fresh water source 7 rinses the fog chamber that removes of gas wash tower 1 and desulfurizing tower 2.
Certainly, in other embodiments, the desulfurizing agent raw material that is applied to system of the present invention is not limited in solid ammonium bicarbonate, can be varied, as various basic species and industrial wastes such as lime stone, lime, calcium carbide mud, flyash, manganese oxide, magnesia, energy-conserving and environment-protective, are widely used.The desulfurizing agent raw material that is applied to technological process of the present invention is not limited in solid ammonium bicarbonate, can be also the basic formulations such as ammonia, ammoniacal liquor.
A kind of Pneumatic emulsifying carbon ammonium desulphurization system of the present invention, comprises absorption plant 30, knot screen 40, neutralising arrangement 50 and separating and reclaiming device 60, simple in structure, when the flue gas of pending many groups flue gas source emission is containing dust and SO
2when concentration is inconsistent, the absorption tower assemblies that many groups are mated with flue gas source are set, for dedusting and desulfurization to meet fume emission requirement.The turbulent aeration zone 14 of its tower main body 1 is the core space of flue gas and slurry reaction, and flue gas is forced to Spin-up during through at least two-layer turbulator 140, and with slurries generation emulsification desulphurization reaction, dust-removal and desulfurizing efficiency improves greatly.Compare with the desulfurizing tower of slurry nozzle with tradition, native system does not arrange nozzle, makes system operation unobstructed.Its absorption plant 30 is for providing gas-liquid contact place, and the dedusting and the desulfurization that complete in flue gas are processed; Knot screen 40 falls the contaminant filters such as dust of dedusting liquid, clear liquid is sent into circulation barrel 12 again and recycle; Neutralising arrangement 50, for by being the acid absorption liquid containing ammonium bisulfite, with alkaline carbonic hydroammonium neutralization reaction, generates ammonium sulfite; Separating and reclaiming device 60 carries out Separation of Solid and Liquid by the slurries after neutralization, reclaims solid product ammonium sulfite and containing the filtrate of ammonium sulfite.
A kind of emulsification carbon ammonium desulfurization process provided by the invention, it is easy and simple to handle, and dust-removal and desulfurizing efficiency is high, and byproduct recoverable avoids causing secondary pollution.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (7)
1. a Pneumatic emulsifying carbon ammonium desulphurization system, is characterized in that: comprise absorption plant (30), knot screen (40), neutralising arrangement (50) and separating and reclaiming device (60), wherein:
Described absorption plant (30) comprises that some groups are processed different SO
2the separate absorption tower assembly of flue gas concentration, each is organized described absorption tower assembly and comprises a gas wash tower (1) and at least one desulfurizing tower (2), described gas wash tower (1) top is provided with exhanst gas outlet (11), bottom is provided with liquid outlet, described liquid outlet and circulation barrel (12) are one-body molded and connect, the zone line of described gas wash tower (1) comprises from bottom to top successively: the equal air chamber (13) that is provided with smoke inlet, turbulent flow He Chu fog chamber, aeration zone (14) (15), the internal interval of described turbulent aeration zone (14) is provided with at least two-layer turbulator for flue gas Spin-up (140), the inlet of described gas wash tower (1) is positioned at the side of described turbulent aeration zone (14) and is positioned at the top of described turbulator (140), the exhanst gas outlet (11) of described gas wash tower (1) is communicated with the smoke inlet of desulfurizing tower (2) described in rear one-level, and the exhanst gas outlet of adjacent two described desulfurizing towers (2) is communicated with smoke inlet,
Described desulfurizing tower (2) is identical with the structure of described gas wash tower (1), and the liquid outlet (22) of described desulfurizing tower (2) and circulatory pool (3) apart arrangement;
Described knot screen (40) is communicated with described circulation barrel (12) circulation; Described circulatory pool (3) is communicated with described separating and reclaiming device (60) circulation by described neutralising arrangement (50).
2. a kind of Pneumatic emulsifying carbon ammonium desulphurization system according to claim 1, it is characterized in that, described system also comprises fresh water source (7), described fresh water source (7) and described circulation barrel (12), circulatory pool (3), and the fog chamber that removes of described gas wash tower (1) and desulfurizing tower (2) is communicated with respectively.
3. a kind of Pneumatic emulsifying carbon ammonium desulphurization system according to claim 1, it is characterized in that, described circulation barrel (12) is communicated with respectively with equal air chamber (13) and turbulent aeration zone (14) of described gas wash tower (1) by circulating pump and pipeline;
In described circulatory pool (3), be provided with mixer (31) and drain hopper (32), described circulatory pool (3) is communicated with respectively with equal air chamber and the turbulent aeration zone of described desulfurizing tower (2) by circulating pump and pipeline.
4. a kind of Pneumatic emulsifying carbon ammonium desulphurization system according to claim 1, it is characterized in that, described knot screen (40) comprises sedimentation basin (41) and clear liquid pump (43), described sedimentation basin (41) is divided into settling zone and clear liquid area by overflow plate, described settling zone is communicated with the liquid outlet of described circulation barrel (12), and the clear liquid of described clear liquid area pumps in described circulation barrel (12) by described clear liquid pump (43) and pipeline.
5. a kind of Pneumatic emulsifying carbon ammonium desulphurization system according to claim 1, it is characterized in that, described separating and reclaiming device (60) comprises filter centrifugal (61), reservoir (62) and the filtrate pump (63) connecting in turn, and described reservoir is provided with overflow plate in (62).
6. according to a kind of Pneumatic emulsifying carbon ammonium desulphurization system described in claim 1 to 5 any one, it is characterized in that, described absorption plant (30) comprises two groups of absorption tower assemblies, described in first group, absorption tower assembly comprises a gas wash tower (1) and a desulfurizing tower (2), described in second group, absorption tower assembly comprises a gas wash tower (1) and two desulfurizing towers (2), all corresponding described circulatory pool (3) of the liquid outlet of desulfurizing tower described in each (2).
7. a technological process for Pneumatic emulsifying carbon ammonium desulfurization, is characterized in that, comprises the steps:
Step S100, absorption process; Speed drops into the absorption liquid that solid carbon ammonium forms carbonic hydroammonium in circulatory pool (3) in accordance with regulations, in circulation barrel (12), adds fresh water as dedusting liquid; Containing dust and SO
2flue gas by gas wash tower (1) by dedusting, the sulfur-containing smoke gas after dedusting enters desulfurizing tower (2), reacts SO with the absorption liquid generation Pneumatic emulsifying meeting
2be absorbed:
2NH
4HCO
3+SO
2→(NH
4)
2SO
3+H
2O+2CO
2，
(NH
4)
2SO
3+SO
2+H
2O→2NH
4HSO
3；
Step S200, neutralisation treatment; The absorption liquid that circulatory pool (3) includes ammonium bisulfite imports in neutralising arrangement (50), makes it to occur neutralization reaction: NH to the interior carbonic hydroammonium that adds solid of described neutralising arrangement (50) simultaneously
4hSO
3+ NH
4hCO
3→ (NH
4)
2sO
3+ H
2o+CO
2;
Step S300, separated removal process; The neutralizer that described neutralising arrangement (50) includes saturated ammonium sulfite solution imports separating and reclaiming device (60), described separating and reclaiming device (60) is by saturated ammonium sulfite solution Separation of Solid and Liquid, isolate solid-state ammonium sulfite white crystal and be packaged into byproduct, containing the filtrate of ammonium sulfite, get back in described circulatory pool (3) and recycle simultaneously;
The processing of the dedusting liquid of step S400, dust-laden; Dust-laden dedusting liquid in described circulation barrel (12) imports precipitation in knot screen (40), and the clear liquid after precipitation is got back in described circulation barrel (12) and recycled;
Step S500, fluid infusion, flushing; Fresh water source (7) is to described circulatory pool (3) and the interior fluid infusion of circulation barrel (12), and described fresh water source (7) rinses the fog chamber that removes of described gas wash tower (1) and desulfurizing tower (2).
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| CN104162356A (en) * | 2014-08-27 | 2014-11-26 | 邹海明 | Double-multitube integrated type pneumatic emulsification desulfurizing tower |
| CN104162356B (en) * | 2014-08-27 | 2016-08-17 | 邹海明 | A kind of double multitube combined Pneumatic emulsifying desulfurizing tower |
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| CN103977693B (en) | 2016-03-02 |
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