CN103623688A - Seawater-biological process flue gas desulfurization and denitrification integrated device - Google Patents
Seawater-biological process flue gas desulfurization and denitrification integrated device Download PDFInfo
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- CN103623688A CN103623688A CN201310610594.3A CN201310610594A CN103623688A CN 103623688 A CN103623688 A CN 103623688A CN 201310610594 A CN201310610594 A CN 201310610594A CN 103623688 A CN103623688 A CN 103623688A
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Abstract
The invention discloses a seawater-biological process flue gas desulfurization and denitrification integrated device which comprises a flue gas temperature-regulation and seasoning chamber, a biological desulfurization chamber and a biological denitrification chamber through which flue gas passes through in a transverse S-shaped mode, wherein an opening in the upper side wall of the flue gas temperature-regulation and seasoning chamber is communicated with an opening in the upper side wall of the biological desulfurization chamber; an opening in the lower side wall of the biological desulfurization chamber is communicated with an opening on the lower side wall of the biological denitrification chamber; and the top side wall of the biological denitrification chamber is provided with a flue gas outlet. The chambers in the device are structurally independent and technically relevant, and the sequence of the chambers can not be changed. The device implements multifunction integration of cooling, dust removal, pre-desulfurization, desulfurization and denitrification, solves the problem of sulfur poisoning under high-sulfur conditions, and has the advantages of simple and compact structure, reasonable layout and small occupied space; and compared with the existing patents based on a single seawater desulfurization process or single biological process, the device disclosed by the invention has more complete functions, and is efficient and easy to implement.
Description
Technical field
The present invention relates to flue gas desulfur device, relate in particular to a kind of seawater and biological method flue gas desulfurization denitrification integrated device.
Background technology
SO in industrial smoke
2and NO
xthe pollution causing is the subject matter of current atmospheric environment, directly restricts harmonious economy stable development, harm humans life health.Through people's effort over a long time, at SO
2reduction of discharging aspect has obtained preliminary effect.But severe air pollution situation does not obtain the change of essence.Along with the raising of countries in the world people's environmental consciousness, also increasingly strict about atmosphere environmental protection legislation in international community, the technology that people make new advances in the urgent need to research removes SO simultaneously
2and NO
x.At present, at some large industrial smokes discharge industries such as electric power, cement, metallurgy, boats and ships etc., be all faced with severe reduction of discharging situation.In power industry, some coal burning machine groups are built respectively desulfurizing tower and denitrating tower, and not only a construction cost is high, and it is larger to maintain operating cost, and the construction and the transformation that utilize existing technology to carry out flue gas desulfurization and denitrification device need very high financial cost.Therefore, study a kind of new and effective denitration integrated device very necessary.
In the method for desulphurization denitration, biological method purification technology is low with its cost, efficiency is high, the feature of non-secondary pollution and have good application prospect.Existing flue gas biological method purification technology be take denitration as main, researcher has proposed multi-form biological denitrification tower building method, in these methods, the overwhelming majority is all conceived to how to improve denitration efficiency, citation form is all in different spaces simple superposition by two or more identical biologic packing materials, repeatedly purify, expect to come according to this raising of implementation efficiency.But, nitrogen oxide in flue gas mainly exists to be insoluble in the form of the NO of water, NO is difficult to enter into liquid phase medium, and the adsorption capacity on microorganism surface is also very low, NO is also just difficult to contact with living beings, cannot effectively carry out biochemical reaction and transform with microorganism, make the actual purification efficiency of NO very low.In addition aspect bioanalysis desulfurization and denitrification integral, also there is researcher to propose to cultivate two kinds of bacterium colonies of desulfurization and denitration in same culture medium simultaneously, but two kinds of different bacterium colonies are generally different for the physicochemical properties such as temperature, PH and nutraceutical requirement, thereby cause being difficult to make denitrification efficiency to reach the highest simultaneously.Also studies have found that, when amount of sulfur contenting in smoke is too high, be easy to cause bacterial classification poisoning and lost efficacy.And current certain methods needed extra flue gas cooling device before carrying out bio-absorbable, so that energy consumption is higher even a secondary pollution.
Meanwhile, sea water desulfuration technology has the advantages such as raw material is inexpensive, technique is simple, reliable.Power plant, steel plant and large ship flue gas in coastal area are processed problem, can introduce sea water desulfuration technology.Through finding in theoretical calculating and practical application, if merely rely on seawater desulfurization device, the SO2 in flue gas is processed more than 90%, the seawater amount needing is huge.In addition, sea water desulfuration method needs larger aeration tank to process the seawater that contains unstable salt of discharging, and this just makes at boats and ships and does not have the factory of larger space to use seawater method limitation.Although hence one can see that, traditional seawater desulfurizing process is applied, and the seawater consumption existing is large, and absorption tower filler price used and consumption are large, and the problems such as system operation cost height still can not be ignored.
Therefore, develop a kind of novel seawater and biological method flue gas desulfurization denitrification integrated device significant.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of simple in structure, rationally distributed, low power consuming, multiple functional seawater and biological method flue gas desulfurization denitrification integrated device are provided.
The present invention is achieved through the following technical solutions:
Seawater and a biological method flue gas desulfurization denitrification integrated device, comprise the modified chamber of flue gas temperature adjustment I, biological desulphurization chamber II, biological denitrification chamber III; The opening of the modified chamber of described flue gas temperature adjustment I upper portion side wall and the opening of biological desulphurization chamber II upper portion side wall are interconnected; The opening of described biological desulphurization chamber II lower sides and the opening of biological denitrification chamber III lower sides are interconnected; The top sidewall of described biological denitrification chamber III is provided with exhanst gas outlet 23;
The bottom of the modified chamber of described flue gas temperature adjustment I is provided with seawer outlet 1 and air-blowing mouth 2; The sidewall at the middle part of the modified chamber of described flue gas temperature adjustment I is provided with smoke inlet 3; Below upper portion side wall opening in the I of the modified chamber of flue gas temperature adjustment, be provided with atomizer 6, atomizer 6 is connected with a seawater distributor 5 with seawater entrance 4; On the inner roof wall of the modified chamber of flue gas temperature adjustment I, be provided with temperature adjustment zone sensors 8, between temperature adjustment zone sensors 8 and seawater distributor 5, be provided with a seawater supply control system 7;
The middle part of described biological desulphurization chamber II is provided with biological desulphurization packing layer 10, is provided with the desulfurizing bacteria nutrient solution distributor 11 with nozzle array in the interlayer of described biological desulphurization packing layer 10; Desulfurizing bacteria nutrient solution 13 is equipped with in the bottom of described biological desulphurization chamber II, is also provided with one for desulfurizing bacteria nutrient solution 13 being delivered to the desulfurizing bacteria nutrient solution drum liquid pump 12 of desulfurizing bacteria nutrient solution distributor 11 in the II of described biological desulphurization chamber;
III middle part, described biological denitrification chamber is provided with biological denitrification packing layer 21, is provided with the denitrifying bacteria nutrient solution distributor 20 with nozzle array in the interlayer of described biological denitrification packing layer 21; Denitrifying bacteria nutrient solution 16 is equipped with in the bottom of described biological denitrification chamber III, is also provided with a denitrifying bacteria nutrient solution drum liquid pump 18 that denitrifying bacteria nutrient solution 16 is delivered to denitrifying bacteria nutrient solution distributor 20 in the III of described biological denitrification chamber.
The bottom of described biological desulphurization chamber II and biological denitrification chamber III is provided with control valve 14,17.
The bottom of described biological desulphurization chamber II is provided with desulfurization zone sensor 15; The bottom of described biological denitrification chamber III is provided with denitration zone sensors 19.
The top of described biological desulphurization chamber II and biological denitrification chamber III is also provided with a removable top cover 9,22.
With respect to prior art, tool of the present invention has the following advantages and beneficial effect:
(1) the modified chamber of flue gas temperature adjustment of the present invention I, biological desulphurization chamber II, biological denitrification chamber III form " S " flue gas track channel, flue gas is longer in the device internal stops time, cooling, dedusting, pre-desulfurization, desulphurization and denitration multifunctional all have been realized, device is simple compact, topology layout is reasonable, take up room less, to compare function more complete with existing simple sea water desulfuration method or simple bioanalysis, efficient easily row.
(2) what the modified chamber of flue gas temperature adjustment I was used is the seawater that is easy to obtain, it not only can regulate flue-gas temperature to be beneficial to biological desulphurization denitration, but also the dust of removing in flue gas prevents from stopping up biological desulphurization packing layer, simultaneously can also realize part to the SO2 in flue gas and remove in advance, solve dexterously the difficult problem that sulfur poisoning easily occurs bacterium colony.
(3) compare with common seawater method, this device is whole does not need a large amount of seawater just can realize efficient desulfuration efficiency, and provide air-blowing mouth in the modified chamber of flue gas temperature adjustment, can blast air, flue gas is dissolved in to the sulfite oxidation in seawater, play the effect of aeration tank, reduced floor space.By adjusting air inflow quantity, just can make the temperature and the oxygen content that enter biological desulphurization chamber II gas reach the required optimal environmental condition of bacterium colony desulphurization denitration in addition.
(4) due to the remove portion SO in the modified chamber of flue gas temperature adjustment
2, biological desulphurization chamber II to flue gas in SO
2again remove efficiently, can realize preferably Multistage desulfuration, meet the strict demand of environmental protection deep desulfuration.
(5) this device is more simple.To the control of seawater spraying amount, can realize entering the adjusting of temperature and humidity of the flue gas of bio-reaction zone (that is: biological desulphurization chamber II, biological denitrification chamber III); Sensor by biological desulphurization chamber II and biological denitrification chamber III bottom, gets final product accurate monitoring bio reaction zone inner case, is easy to change in time nutrient solution.
(6) realized biological method flue gas desulfurization denitrification integral, compare to existing method of simultaneously cultivating desulfurization bacterium colony and denitration bacterium colony in same cultivation, this patent can be controlled respectively the environment of bio-reaction zone, reduced bacterium colony and cultivated difficulty, made two microorganisms in bio-reaction zone reach required optimum condition simple possible more.
This patent adopts simple and easy to do technological means, has positive and practical effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
The specific embodiment
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figure 1.Seawater of the present invention and biological method flue gas desulfurization denitrification integrated device, comprise the modified chamber of flue gas temperature adjustment I, biological desulphurization chamber II, biological denitrification chamber III; The opening of the modified chamber of described flue gas temperature adjustment I upper portion side wall and the opening of biological desulphurization chamber II upper portion side wall are interconnected; The opening of described biological desulphurization chamber II lower sides and the opening of biological denitrification chamber III lower sides are interconnected; The top sidewall of described biological denitrification chamber III is provided with exhanst gas outlet 23;
The bottom of the modified chamber of described flue gas temperature adjustment I is provided with seawer outlet 1 and air-blowing mouth 2; The sidewall at the middle part of the modified chamber of described flue gas temperature adjustment I is provided with smoke inlet 3; Below upper portion side wall opening in the I of the modified chamber of flue gas temperature adjustment, be provided with atomizer 6, atomizer 6 is connected with a seawater distributor 5 with seawater entrance 4; On the inner roof wall of the modified chamber of flue gas temperature adjustment I, be provided with temperature adjustment zone sensors 8, between temperature adjustment zone sensors 8 and seawater distributor 5, be provided with a seawater supply control system 7;
The middle part of described biological desulphurization chamber II is provided with biological desulphurization packing layer 10, is provided with the desulfurizing bacteria nutrient solution distributor 11 with nozzle array in the interlayer of described biological desulphurization packing layer 10; Desulfurizing bacteria nutrient solution 13 is equipped with in the bottom of described biological desulphurization chamber II, is also provided with one for desulfurizing bacteria nutrient solution 13 being delivered to the desulfurizing bacteria nutrient solution drum liquid pump 12 of desulfurizing bacteria nutrient solution distributor 11 in the II of described biological desulphurization chamber;
III middle part, described biological denitrification chamber is provided with biological denitrification packing layer 21, is provided with the denitrifying bacteria nutrient solution distributor 20 with nozzle array in the interlayer of described biological denitrification packing layer 21; Denitrifying bacteria nutrient solution 16 is equipped with in the bottom of described biological denitrification chamber III, is also provided with a denitrifying bacteria nutrient solution drum liquid pump 18 that denitrifying bacteria nutrient solution 16 is delivered to denitrifying bacteria nutrient solution distributor 20 in the III of described biological denitrification chamber.
The bottom of described biological desulphurization chamber II and biological denitrification chamber III is provided with control valve 14,17.
The bottom of described biological desulphurization chamber II is provided with desulfurization zone sensor 15; The bottom of described biological denitrification chamber III is provided with denitration zone sensors 19.
The top of described biological desulphurization chamber II and biological denitrification chamber III is also provided with a removable top cover 9,22.
This device use of take is below carried out flue gas desulfurization and denitrification as example on large ship, sketches its operation principle as follows:
Pending flue gas is when gas approach 3 enters the modified chamber of flue gas temperature adjustment I, atomizer 5(can be also a nozzle array) seawater of spray plays modified thermoregulatory effect to flue gas, and this acting body is present: remove dust in the middle of flue gas, tentatively slough part SO
2, reduce flue-gas temperature to 40 degree left and right, meanwhile, air enters the modified chamber of flue gas temperature adjustment I through air-blowing mouth 2, can be oxidized the unstable nitrite being dissolved with in seawater, prevent its contaminated environment, played the effect of miniature aeration tank herein, seawater enters sea after air-blowing is processed.The air being entered by air-blowing mouth 2 can be oxidized the NO in flue gas, regulates the oxygen content in flue gas simultaneously.At the sensor 8 of the top layout of the modified chamber of flue gas temperature adjustment I, can measure in real time the temperature of flue gas, seawater supply control system 7 regulates the seawater amount of supply according to the temperature of setting, thereby reach automatic to the modified effect of flue gas temperature adjustment, make to enter the flue gas satisfied temperature condition of biological desulphurization chamber II.
Flue gas enters biological desulphurization packing layer 10 from top to bottom after entering described biological desulphurization chamber II.The nutrient solution of desulfurizing bacteria nutrient solution distributor 11 sprays in biological desulphurization packing layer 10 forms liquid film, and microorganism is realized biofilm in packing layer, in the process of passing through, realizes and sloughs SO at flue gas
2, described desulfurizing bacteria nutrient solution drum liquid pump 12 can again be delivered to bottom nutrient solution desulfurizing bacteria nutrient solution distributor 11 and spray to biological desulphurization packing layer 10 and recycle.The desulfurization zone sensor 15 that bottom arranges can be monitored the physico chemical factor of desulfurizing bacteria nutrient solution 13, thereby determine the desulfurization situation in biological desulphurization packing layer 10, when nutrient solution recycled after a period of time, by control valve 14, discharged, and send into again new desulfurizing bacteria nutrient solution 13.
Similar with described biological desulphurization chamber II, described biological denitrification chamber III can remove the NO in the flue gas entering from bottom to top
x.Flue gas enters biological denitrification chamber III from biological desulphurization chamber II, first enters biological denitrification packing layer 21, and the denitration bacterium colony of biofilm on biological denitrification packing layer 21 is by NO
xbe converted into self component or be dissimilated as nitrate (being that nitrated bacterium colony or denitrification bacterium colony are determined according to bacterium colony used), the physicochemical environments such as the temperature of III inside, described biological denitrification chamber, humidity can be measured by denitration zone sensors 19 equally.Control denitrifying bacteria nutrient solution 16 and get rid of and send into, to guarantee that microorganism can carry out denitration at the most efficient state.
Flue gas finally enters chimney through exhanst gas outlet 23 and discharges, and completes all absorption processes of desulfurizing and denitrifying process.
Just can realize preferably the present invention as mentioned above.
Above-described embodiment is preferred embodiments of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from the change of doing under Spirit Essence of the present invention and principle and should be equivalent substitute mode, is included in protection scope of the present invention.
Claims (5)
1. seawater and a biological method flue gas desulfurization denitrification integrated device, is characterized in that comprising the modified chamber of flue gas temperature adjustment, biological desulphurization chamber, biological denitrification chamber; The opening of the modified chamber of described flue gas temperature adjustment upper portion side wall and the opening of biological desulphurization chamber upper portion side wall are interconnected; The opening of described biological desulphurization chamber lower sides and the opening of biological denitrification chamber lower sides are interconnected; The top sidewall of described biological denitrification chamber is provided with exhanst gas outlet;
The bottom of the modified chamber of described flue gas temperature adjustment is provided with seawer outlet and air-blowing mouth; The sidewall at the middle part of the modified chamber of described flue gas temperature adjustment is provided with smoke inlet; Below the modified indoor upper portion side wall opening of flue gas temperature adjustment, be provided with atomizer, atomizer is connected with a seawater distributor with seawater entrance; On the inner roof wall of the modified chamber of flue gas temperature adjustment, be provided with temperature adjustment zone sensors, between temperature adjustment zone sensors and seawater distributor, be provided with a seawater supply control system;
The middle part of described biological desulphurization chamber is provided with biological desulphurization packing layer, is provided with the desulfurizing bacteria nutrient solution distributor with nozzle array in the interlayer of described biological desulphurization packing layer; Desulfurizing bacteria nutrient solution is equipped with in the bottom of described biological desulphurization chamber, and described biological desulphurization is indoor is also provided with one for desulfurizing bacteria nutrient solution being delivered to the desulfurizing bacteria nutrient solution drum liquid pump of desulfurizing bacteria nutrient solution distributor;
Middle part, described biological denitrification chamber is provided with biological denitrification packing layer, is provided with the denitrifying bacteria nutrient solution distributor with nozzle array in the interlayer of described biological denitrification packing layer; Denitrifying bacteria nutrient solution is equipped with in the bottom of described biological denitrification chamber, and described biological denitrification is indoor is also provided with a denitrifying bacteria nutrient solution drum liquid pump that denitrifying bacteria nutrient solution is delivered to denitrifying bacteria nutrient solution distributor.
2. seawater according to claim 1 and biological method flue gas desulfurization denitrification integrated device, is characterized in that: the bottom of described biological desulphurization chamber and biological denitrification chamber is provided with control valve.
3. seawater according to claim 1 and 2 and biological method flue gas desulfurization denitrification integrated device, is characterized in that: the bottom of described biological desulphurization chamber is provided with desulfurization zone sensor.
4. seawater according to claim 1 and 2 and biological method flue gas desulfurization denitrification integrated device, is characterized in that: the bottom of described biological denitrification chamber is provided with denitration zone sensors.
5. seawater according to claim 1 and 2 and biological method flue gas desulfurization denitrification integrated device, is characterized in that: the top of biological desulphurization chamber and biological denitrification chamber is also provided with removable top cover.
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| CN106268289A (en) * | 2016-09-09 | 2017-01-04 | 北京交通大学 | The biological denitrification method of anaerobic ammonia oxidizing bacteria |
| CN114849447A (en) * | 2022-04-25 | 2022-08-05 | 镇江海纳川生态环境科技有限公司 | Ship auxiliary engine fuel waste gas treatment device for ship shore power and treatment method thereof |
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