CN205055794U - Ammonia process dual cycle SOx/NOx control removes dust and washs absorption tower - Google Patents
Ammonia process dual cycle SOx/NOx control removes dust and washs absorption tower Download PDFInfo
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- CN205055794U CN205055794U CN201520812449.8U CN201520812449U CN205055794U CN 205055794 U CN205055794 U CN 205055794U CN 201520812449 U CN201520812449 U CN 201520812449U CN 205055794 U CN205055794 U CN 205055794U
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Abstract
The utility model discloses an ammonia process dual cycle SOx/NOx control removes dust and washs absorption tower belongs to environmental protection equipment technical field. A plurality of tower plate layers, the tower body is removed the water smoke section, is strengthened except that ammonia fog section, second grade absorb the section, the one -level is absorbed the section, is washd cooling section, oxidation panel, second grade absorption liquid recycle section and one -level absorption liquid recycle section and forms by the high efficiency in proper order. The utility model has the advantages that: area is little, arrange the compactness, the installation is simple, and the investment economizes, the desulfurization is efficient, to the strong adaptability of coal and boiler load change, every grade of absorption is relatively independent, and district's control is equallyd divide to absorption liquid density, pH value, and system's ammonia is escaped for a short time, discharges particulate matter concentration and hangs down, system resistance is little for the device.
Description
Technical field
The utility model relates to technical field of environment protection equipment, refers to a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower especially.
Background technology
China's SO2 emissions are huge, severe contamination is caused to atmospheric environment, discharge capacity ranks first in the world, exceed the self-purification capacity of China's atmospheric environment, the region that year Precipitation pH is less than 5.6 accounts for 40% of area, cause tremendous economic to lose, have a strong impact on China's ecological environment and people ' s health.SO
2the formation of discharge and acid rain is mainly derived from the industries such as fire coal, metallurgy, chemical industry.
Along with the development of economic technology, going deep into of circular economy concept, ammonia process highlights its advantage, except desulfuration efficiency is high, also has and removes part NO
xability.And sulfur content is more high more economical, the utilization of ammonia process gets more and more.
By the impact of the factors such as discharge standard raising, coal-fired coal varitation, as flue gas SO
2(>=4000mg/Nm when concentration is higher
3), when desulfurization degree requires high (>99%), the ammonia process of desulfurization adopts single-stage absorption technique, absorbing liquid operation pH value is higher, absorbing liquid density is high, system oxidation rate is low, easily causes aerosol to produce, the high (>20mg/Nm of pm emission substrate concentration simultaneously
3), desulfurizer exiting flue gas conditions of streaking is serious, can not meet emission request.Simple employing increases spraying layer and improves SO in portion's desulfurizing tower
2absorptivity, cannot meet existing environmental protection standard, must promote conventional process techniques and innovate, exploitation double circulation desulphurization denitration dust collecting technology.
Utility model content
The purpose of this utility model is to provide the high ammonia process double circulation desulphurization denitration dust collecting washing absorption tower of a kind of absorptivity.
The technical solution of the utility model is achieved in that a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower, comprise tower body, described tower body successively by efficient water-removing mist section, strengthening except ammonia mist section, secondary absorber portion, first order absorption section, washing temperature descending section, oxidation panel, secondary absorbing liquid circulation section and first order absorption liquid circulation section form; Described efficient water-removing mist section and strengthening arrange efficient water-removing day with fog except between ammonia mist section; Described strengthening is except arranging gas distributor between ammonia mist section and secondary absorber portion; Between described secondary absorber portion and first order absorption section, the second air-spreading disk is set; Between described first order absorption section and washing temperature descending section, the first air-spreading disk is set; Between described washing temperature descending section and oxidation panel, second partition is set; Between described oxidation panel and secondary absorbing liquid circulation section, non-porous separator plate is set; Between described secondary absorbing liquid circulation section and first order absorption liquid circulation section, the first dividing plate is set.
Further, described tower body top offers chimney.
Further, the tower body being positioned at described efficient water-removing mist section is disposed with inverse spray spray thrower from bottom to up, along spray spray thrower with except water mist device, described inverse spray spray thrower, is removably connected to respectively on described tower body along spray spray thrower with except water mist device.
Further, being positioned at described strengthening except the tower body of ammonia mist section is disposed with from bottom to up except ammonia day with fog and the 4th spray equipment.
Further, the tower body being positioned at described secondary absorber portion is disposed with the second spray equipment, some packing layers, the 3rd spray equipment and absorbing liquid demister from bottom to up, and described second spray equipment, the 3rd spray equipment and absorbing liquid demister are removably connected on described tower body respectively.
Further, packing layer is one deck or two layers.Wherein, packing layer and (or) the 3rd spray equipment specifically can set according to the requirement to absorptivity, when this absorption tower of embody rule, have met when requiring absorptivity, also can omit, not add packing layer and (or) the 3rd spray equipment.
Further, the tower body being positioned at described first order absorption section is provided with some absorption spray equipments, and described absorption spray equipment is removably connected on described tower body.
Further, the tower body being positioned at described washing temperature descending section offers flue gas inlet tube; The tower body being positioned at described washing temperature descending section is provided with the first spray equipment.
Further, be provided with air distribution plate in the pipe of described flue gas inlet tube, described air distribution plate is removably connected on described flue gas inlet tube.
Further, the tower body being positioned at described oxidation panel is provided with oxidation and aeration device, and described oxidation and aeration device is removably connected on described tower body; The tower body being positioned at described oxidation panel is provided with some liquid distribution plates, and described liquid distribution plate is removably connected on described tower body.
Further, the quantity of described liquid distribution plate is two-layer.
In the utility model, the structure of oxidation and aeration device is the utility model patent " reactor of ammonia process of desulfurization denitration band aerator " (ZL201220525319.2) of having obtained the authorization of the applicant.Other component structural of the present utility model is universal architecture, prepares according to a conventional method.
Operation principle of the present utility model is:
1, after gathering dust, SO
2concentration>=4000mg/Nm
3, temperature 120 ~ 180 DEG C heat smoke, enter washing temperature descending section, ammonium sulfate (containing ammonium nitrate) the solution counter current contacting sprayed with top, by the washing of ammonium sulfate (containing ammonium nitrate) liquid, flue gas cools because of adiabatic evaporation in the process.Part NO is oxidized to NO by the oxygen in flue gas
2absorbed.The heat of flue gas makes portion of water evaporation in solution and concentratedly to reach capacity, and separate out sulphur ammonium crystal grain, magma content reaches regulation technology controlling and process index, pumping sulphur ammonium operation.
2, flue gas is through washing temperature descending section washing cooling, and temperature is cooled to about 50 DEG C by 120 DEG C ~ 180 DEG C, enters first order absorption section by the first air-spreading disk.In first order absorption section, flue gas, from bottom to top by void tower structure absorber portion, absorbs through absorbing liquid countercurrent spray, most of SO in flue gas
2remove in this section, SO
2extrusion rate > 90%, part NOx is reduced to N
2and deviate from.The major part of absorbing liquid enters first order absorption liquid circulation section, squeezes into first order absorption section continue circulated sprinkling absorption after supplementing the regeneration of ammonia absorption liquid with pump.
3, flue gas enters secondary absorber portion again, through absorbing spray equipment or packing material absorbing, under in the second level, comparatively low-density and pH value absorbing liquid spray, and remainder SO in flue gas
2remove in this section, SO
2extrusion rate > 99%.The major part of absorbing liquid enters secondary absorbing liquid circulation section, squeezes into secondary absorber portion continue circulated sprinkling absorption after supplementing the regeneration of ammonia absorption liquid with pump.
4, be provided with non-porous separator plate between secondary absorbing liquid circulation section and oxidation panel, control absorption process increase amount of liquid enter oxidation panel, can ensure absorption, be oxidized be independent of each other.Absorbing liquid part enters oxidation panel, pass into compressed air, simultaneously because liquid distribution plate is when distributes liquid, make oxidation and aeration device distribution of gas even, bubble little (< 5mm), gas-liquid contact specific area is large, and the ammonium sulfite in oxidizing tower in absorbing liquid is oxidized to ammonium sulfate, and sub-salt oxygenation efficiency is more than 99%.
5, liquid distribution plate is set in oxidation panel, the eliminating efficiency of NOx can be improved under the effect of trace catalyst.
6, purifying smoke enters strengthening except ammonia mist section through absorber portion top, removes ammonia mist section configure efficient water-removing day with fog, the 4th spray equipment, except ammonia day with fog, be furnished with fresh water (FW) and rinse inverse spray spray thrower, the ammonia mist of flushing and the trapping of recovery demister and aerosol in strengthening.Efficient water-removing day with fog fresh water (FW) rinses control partition chronologically, to prevent efficient water-removing day with fog from blocking, ensures foam removal efficiency simultaneously, minimizing system ammonia-spillage amount, raising system ammonia utilization rate, ensures that the recovery utilization rate of ammonia reaches more than 98%, guarantees amount of ammonia slip≤5mg/Nm
3.
7, purifying smoke removes ammonia mist section top through strengthening and enters efficient water-removing mist section, when flue gas containing droplet flows through except water mist device passage, drop with except the effect of impact of water mist device, effect of inertia, turn to centrifugal force and with the rubbing action of corrugated sheet, suction-operated, drop be captured, be furnished with fresh water (FW) and rinse inverse spray spray thrower, rinse the drop be captured, the droplet content mean value after demist is less than 75mg/Nm
3(size droplet diameter is greater than 15 μm).The escaping of ammonia≤5mg/Nm
3.
The beneficial effects of the utility model are: compared with prior art, and the utility model floor space is little, characteristics of compact layout, installation are simple, reduced investment; Desulfuration efficiency high (>=99%), to the strong adaptability that coal and boiler load change; Every grade of absorption is relatively independent, the equal zonal control of absorbing liquid density, pH value, little (the < 5mg/Nm of system the escaping of ammonia
3), low (the < 20mg/Nm of pm emission substrate concentration
3); Apparatus system resistance little (< 1500Pa).
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only one of them embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
In figure: 1-tower body, 2-efficient water-removing mist section, 3-strengthening is except ammonia mist section, 4-secondary absorber portion, 5-first order absorption section, 6-washs temperature descending section, 7-oxidation panel, 8-secondary absorbing liquid circulation section, 9-first order absorption liquid circulation section, 10-first dividing plate, 11-non-porous separator plate, 12-oxidation and aeration device, 13-liquid distribution plate, 14-second partition, 15-flue gas inlet tube, 16-air distribution plate, 17-first spray equipment, 18-first air-spreading disk, 19-absorbs spray equipment, 20-second air-spreading disk, 21-second spray equipment, 22-packing layer, 23-the 3rd spray equipment, 24-gas distributor, 25-is except ammonia day with fog, 26-the 4th spray equipment, 27-efficient water-removing day with fog, 28-inverse spray spray thrower, 29-is along spray spray thrower, 30-is except water mist device, 31-chimney, 32-absorbing liquid demister.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only one of them embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower, comprise tower body 1, tower body 1 from top to bottom successively by efficient water-removing mist section 2, strengthening except ammonia mist section 3, secondary absorber portion 4, first order absorption section 5, washing temperature descending section 6, oxidation panel 7, secondary absorbing liquid circulation section 8 and first order absorption liquid circulation section 9 form; Efficient water-removing mist section 2 and strengthening arrange efficient water-removing day with fog 27 except between ammonia mist section 3; Strengthening is except arranging gas distributor 24 between ammonia mist section 3 and secondary absorber portion 4; Second air-spreading disk 20 is set between secondary absorber portion 4 and first order absorption section 5; Between first order absorption section 5 and washing temperature descending section 6, the first air-spreading disk 18 is set; Between washing temperature descending section 6 and oxidation panel 7, second partition 14 is set; Between oxidation panel 7 and secondary absorbing liquid circulation section 8, non-porous separator plate 11 is set; First dividing plate 10 is set between secondary absorbing liquid circulation section 8 and first order absorption liquid circulation section 9.
Wherein, tower body 1 top offers chimney 31.
Wherein, the tower body 1 being positioned at efficient water-removing mist section 2 is disposed with against spray spray thrower 28, along spraying spray thrower 29 and removing water mist device 30 from bottom to up, against spray spray thrower 28, is removably connected to respectively on tower body 1 along spraying spray thrower 29 and removing water mist device 30.
Wherein, be positioned at the tower body 1 strengthened except ammonia mist section 3 to be disposed with from bottom to up except ammonia day with fog 25 and the 4th spray equipment 26.
Wherein, the tower body 1 being positioned at secondary absorber portion 4 is disposed with the second spray equipment 21, packing layer 22, the 3rd spray equipment 23 and absorbing liquid demister 32, second spray equipment 21, the 3rd spray equipment 23 and absorbing liquid demister 32 from bottom to up and is removably connected to respectively on tower body 1.
Concrete, packing layer 22 is one deck or two layers.Wherein, packing layer 22 and (or) the 3rd spray equipment 23 specifically can set according to the requirement to absorptivity, when this absorption tower of embody rule, have met when requiring absorptivity, also can omit, not add packing layer 22 and (or) the 3rd spray equipment 23.
Wherein, the tower body 1 being positioned at first order absorption section 5 is provided with some absorption spray equipments 19, absorbs spray equipment 19 and is removably connected on tower body 1.
Wherein, be positioned on the tower body 1 washing temperature descending section 6 and offer flue gas inlet tube 15; The tower body 1 being positioned at washing temperature descending section 6 is provided with the first spray equipment 17.
Be provided with air distribution plate 16 in the pipe of flue gas inlet tube 15, air distribution plate 16 is removably connected on flue gas inlet tube 15.
Wherein, the tower body 1 being positioned at oxidation panel 7 is provided with oxidation and aeration device 12, and oxidation and aeration device 12 is removably connected on tower body 1; The tower body 1 being positioned at oxidation panel 7 is provided with some liquid distribution plates 13, and liquid distribution plate 13 is removably connected on tower body 1.
Concrete, the quantity of liquid distribution plate 13 is two-layer.
The utility model is for flue gas SO
2concentration>=4000mg/Nm
3can effectively remove, to the strong adaptability that coal and boiler load change, absorptivity high (>=99%), in systems in which from the generation of source reduction particle, equipment operating cost is low, and the cooling of thermal-arrest flue gas, cleaning dust, ammonium sulfate liquid concentrate, SO
2absorb and NO
xreduction removes, sulfite oxidation, and except ammonia mist and aerosol, water smoke function are integrated, every grade absorbs relatively independent ammonia process double circulation desulphurization denitration dust collecting washing absorption tower.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an ammonia process double circulation desulphurization denitration dust collecting washing absorption tower, comprise tower body (1), it is characterized in that: described tower body (1) removes ammonia mist section (3), secondary absorber portion (4), first order absorption section (5), washing temperature descending section (6), oxidation panel (7), secondary absorbing liquid circulation section (8) and first order absorption liquid circulation section (9) by efficient water-removing mist section (2), strengthening successively and forms; Described efficient water-removing mist section (2) and strengthening arrange efficient water-removing day with fog (27) except between ammonia mist section (3); Described strengthening is except arranging gas distributor (24) between ammonia mist section (3) and secondary absorber portion (4); Between described secondary absorber portion (4) and first order absorption section (5), the second air-spreading disk (20) is set; Between described first order absorption section (5) and washing temperature descending section (6), the first air-spreading disk (18) is set; Between described washing temperature descending section (6) and oxidation panel (7), second partition (14) is set; Non-porous separator plate (11) is set between described oxidation panel (7) and secondary absorbing liquid circulation section (8); Between described secondary absorbing liquid circulation section (8) and first order absorption liquid circulation section (9), the first dividing plate (10) is set.
2. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 1, is characterized in that: described tower body (1) top offers chimney (31).
3. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 1, it is characterized in that: the tower body (1) being positioned at described efficient water-removing mist section (2) is disposed with inverse spray spray thrower (28) from bottom to up, along spray spray thrower (29) with except water mist device (30), described inverse spray spray thrower (28), to be removably connected to respectively on described tower body (1) along spray spray thrower (29) with except water mist device (30).
4. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 1, is characterized in that: being positioned at described strengthening except the tower body (1) of ammonia mist section (3) is disposed with from bottom to up except ammonia day with fog (25) and the 4th spray equipment (26).
5. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 1, it is characterized in that: the tower body (1) being positioned at described secondary absorber portion (4) is disposed with the second spray equipment (21), some packing layers (22), the 3rd spray equipment (23) and absorbing liquid demister (32) from bottom to up, and described second spray equipment (21), the 3rd spray equipment (23) and absorbing liquid demister (32) are removably connected on described tower body (1) respectively.
6. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 1, it is characterized in that: the tower body (1) being positioned at described first order absorption section (5) is provided with some absorption spray equipments (19), and described absorption spray equipment (19) is removably connected on described tower body (1).
7. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 1, is characterized in that: the tower body (1) being positioned at described washing temperature descending section (6) offers flue gas inlet tube (15); The tower body (1) being positioned at described washing temperature descending section (6) is provided with the first spray equipment (17).
8. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 7, it is characterized in that: be provided with air distribution plate (16) in the pipe of described flue gas inlet tube (15), described air distribution plate (16) is removably connected on described flue gas inlet tube (15).
9. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 1, it is characterized in that: the tower body (1) being positioned at described oxidation panel (7) is provided with oxidation and aeration device (12), described oxidation and aeration device (12) is removably connected on described tower body (1); The tower body (1) being positioned at described oxidation panel (7) is provided with some liquid distribution plates (13), and described liquid distribution plate (13) is removably connected on described tower body (1).
10. a kind of ammonia process double circulation desulphurization denitration dust collecting washing absorption tower according to claim 9, is characterized in that: the quantity of described liquid distribution plate (13) is two-layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812449.8U CN205055794U (en) | 2015-10-19 | 2015-10-19 | Ammonia process dual cycle SOx/NOx control removes dust and washs absorption tower |
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|---|---|---|---|
| CN201520812449.8U CN205055794U (en) | 2015-10-19 | 2015-10-19 | Ammonia process dual cycle SOx/NOx control removes dust and washs absorption tower |
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|---|---|
| CN205055794U true CN205055794U (en) | 2016-03-02 |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351154A (en) * | 2018-11-19 | 2019-02-19 | 江苏环集团有限公司 | A kind of resource reclaim type flue gas desulfurization and denitrification device and method |
-
2015
- 2015-10-19 CN CN201520812449.8U patent/CN205055794U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351154A (en) * | 2018-11-19 | 2019-02-19 | 江苏环集团有限公司 | A kind of resource reclaim type flue gas desulfurization and denitrification device and method |
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Address after: 650106 No. 199, science and technology road, hi tech Industrial Development Zone, Yunnan, Kunming Patentee after: ASIA-PACIFIC ENVIRONMENTAL CORP. Address before: 650106 No. 199, science and technology road, hi tech Industrial Development Zone, Yunnan, Kunming Patentee before: Yatai Environmental Engineering Designing Research Co., Ltd., Yunnan Prov. |