CN215610420U - Desulfurization and denitrification integrated purification tower - Google Patents
Desulfurization and denitrification integrated purification tower Download PDFInfo
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- CN215610420U CN215610420U CN202121211959.1U CN202121211959U CN215610420U CN 215610420 U CN215610420 U CN 215610420U CN 202121211959 U CN202121211959 U CN 202121211959U CN 215610420 U CN215610420 U CN 215610420U
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Abstract
A desulfurization and denitrification integrated purification tower comprises a smoke inlet chamber, two primary purification towers, two transition smoke chambers, two secondary purification towers, a smoke outlet chamber and two dischargers; the two primary purification towers are respectively positioned at two sides of the smoke inlet chamber and are communicated with the smoke inlet chamber, and a lower conical hopper, a second buffer plate and a middle conical hopper are arranged in each primary purification tower; the lower end outlet of each lower cone hopper is connected with the feed port of each discharger; each middle cone hopper is connected with the discharge port of each secondary purification tower; an upper conical hopper is arranged on each secondary purification tower, and a first buffer plate is arranged in each secondary purification tower; each transition smoke chamber is respectively communicated with each primary purification tower and each secondary purification tower, and an ammonia spraying pipe, a smoke mixer and a first guide plate are arranged in each transition smoke chamber; the smoke outlet chamber is positioned above the smoke inlet chamber and is respectively communicated with the two secondary purification towers. The purification tower provided by the utility model has good desulfurization and denitrification effects, low loss of activated carbon and low use cost.
Description
Technical Field
The utility model relates to the technical field of environmental protection, in particular to a desulfurization and denitrification integrated purification tower.
Background
The dry active carbon fume desulfurizing and denitrating technology utilizes the adsorption performance of active carbon to reach the aim of desulfurizing, denitrating and purifying air. The method is suitable for the development of policies of environmental protection, energy conservation and emission reduction and circular economy in China, and meets the guiding ideas of large-scale steel equipment, advanced technology, high production efficiency, resource circulation, energy conservation and consumption reduction, environmental protection and the like. For flow rate and SO of sintering flue gas2The change adaptability of concentration, NOX concentration and temperature is strong, and meanwhile, sulfur resources are recycled; in the dry flue gas desulfurization and denitration process by activated carbon, SO is adsorbed by activated carbon2And NOx;
the active carbon desulfurization process principle is based on SO2Adsorption and catalysis on the surface of active coke, SO in flue gas2Reacting with oxygen and water vapor in the flue gas at the temperature of 120-160 ℃ to form sulfuric acid which is adsorbed in active carbon pores;
physical adsorption: SO (SO)2→SO2(SO2Adsorbed in activated carbon micropores);
chemical adsorption: SO (SO)2+O2→SO3 SO3+nH2O→H2SO4+(n－1)H2O
NH spraying during denitration3Conversion to sulfate: h2SO4+NH3→NH4HSO4 NH4HSO4+NH3→(NH4)2SO4
The denitration mechanism is that ammonia gas is sprayed for denitration, active carbon is used as a catalyst for removing NOx, NOx and NH3At about 120-160 ℃, catalytic reaction is carried out on the carbon-based surface to decompose NO into N2And H2O, or ammonium sulfate, is adsorbed on activated carbon, the main reaction formula is as follows:
NH4HSO4+NH3→(NH4)2SO4
the active carbon dust removal principle is that due to the adsorption characteristic of the active carbon, the active carbon adsorption layer is equivalent to a high-efficiency granular layer filter, and under the action of inertial collision and interception effect, dust particles in flue gas are trapped at different parts in a bed layer, so that the flue gas dust removal and purification process is completed;
but among the present adsorption tower, the breakage rate of active carbon is high, and greatly reduced adsorption tower is life, and maintenance cycle is short, greatly reduced adsorption tower SOx/NOx control's efficiency.
SUMMERY OF THE UTILITY MODEL
Objects of the utility model
In order to solve the technical problems in the background art, the utility model provides a desulfurization and denitrification integrated purification tower which has good desulfurization and denitrification effects, low loss of activated carbon and low use cost.
(II) technical scheme
The utility model provides a desulfurization and denitrification integrated purification tower which comprises a smoke inlet chamber, two primary purification towers, two transition smoke chambers, two secondary purification towers, a smoke outlet chamber and two dischargers, wherein the smoke inlet chamber is connected with the two primary purification towers; the smoke inlet chamber is provided with a smoke inlet;
the two primary purification towers are respectively positioned at two sides of the smoke inlet chamber and are communicated with the smoke inlet chamber, and a lower conical hopper, a second buffer plate and a middle conical hopper are arranged in each primary purification tower;
the feeding port of each lower cone hopper is connected with the discharge port of each primary purification tower, and the lower outlet of each lower cone hopper is connected with the feeding port of each discharger;
the discharge port of each middle cone hopper is connected with the feed inlet of each primary purification tower, and the feed port of each middle cone hopper is connected with the discharge port of each secondary purification tower; the two secondary purification towers are respectively positioned above the two primary purification towers and correspond to each other one by one;
each secondary purification tower is provided with an upper conical hopper; each upper conical hopper is provided with a feeding hole for communicating a storage bin; a first buffer plate is arranged in each secondary purification tower;
the two transition smoke chambers are respectively positioned at two sides of each primary purification tower and each secondary purification tower, each transition smoke chamber is respectively communicated with each primary purification tower and each secondary purification tower, and each transition smoke chamber is internally provided with an ammonia spraying pipe, a smoke mixer and a first guide plate; a nozzle is arranged at the ammonia spraying pipe orifice of the ammonia spraying pipe;
the flue gas mixer is positioned above the ammonia outlet of the ammonia spraying pipe and is positioned below the first guide plate;
the smoke outlet chamber is provided with a smoke outlet, the smoke outlet chamber is positioned above the smoke inlet chamber and between the two second-stage purification towers, and the smoke outlet chamber is respectively communicated with the two second-stage purification towers.
Preferably, the spout of each nozzle is directed vertically upwards.
Preferably, the arrangement direction of each second buffer plate and each first buffer plate is the same as the tower section bending plate of the purification tower, and the included angle of the two sides of each second buffer plate and each first buffer plate is 55-60 degrees.
Preferably, the ammonia injection pipe, the flue gas mixer and the first guide plate in each transition flue chamber are distributed side by side with the middle cone bucket on each side.
Preferably, each flue gas mixer comprises a plurality of second baffles; the flow guide directions of the plurality of second flow guide plates are different.
Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:
when the device is used, the smoke to be treated enters the smoke inlet chamber from the smoke inlet on the smoke inlet chamber, the smoke in the smoke inlet chamber enters the primary purification towers at two sides of the smoke inlet chamber, and the smoke entering the two primary purification towers acts with active carbon particles in the primary purification towers to complete the desulfurization of the smoke; the flue gas after desulfurization enters the two transitional smoke chambers, the flue gas entering the two transitional smoke chambers acts on ammonia sprayed by the ammonia spraying pipe, a flue gas mixer arranged in each transitional smoke chamber can uniformly and fully mix the flue gas and the ammonia, the flue gas and the ammonia after uniform mixing enter the two secondary purification towers under the action of a first guide plate, the mixed flue gas acts on active carbon in the two secondary purification towers to complete the denitration process, the flue gas after desulfurization and denitration enters the smoke outlet chamber and is finally discharged from a smoke outlet on the smoke outlet chamber, and the desulfurization and denitration integration is realized; the occupied area is saved;
in addition, the activated carbon in the two primary purification towers and the two secondary purifications is continuously discharged through two dischargers respectively; the active carbon in the bin is added into the two secondary purification towers and the two primary purification towers from the feed inlets on the two upper conical hoppers, and when the active carbon flows downwards under the action of gravity, the height drop of the active carbon is reduced due to the action of the first buffer plate and the second buffer plate, so that the breaking rate of the active carbon is reduced, the operation cost of the device is further reduced, the efficiency of desulfurization and denitrification on flue gas is greatly improved, and the maintenance period of the device is greatly prolonged; because there is certain frictional force between active carbon and first buffer board and the second buffer board, so reduced the lateral pressure of active carbon to tower section lateral wall, reduced the loss to the tower body, improved the life of purifying column.
Drawings
FIG. 1 is a schematic structural diagram of a desulfurization and denitrification integrated purification tower provided by the utility model.
FIG. 2 is a sectional view of the desulfurization and denitrification integrated purification tower provided by the utility model in the direction of A-A.
FIG. 3 is a sectional view in the direction B-B of the desulfurization and denitrification integrated purification tower provided by the utility model.
FIG. 4 is a sectional view in the C-C direction of the desulfurization and denitrification integrated purification tower provided by the utility model.
FIG. 5 is a sectional view in the D-D direction of the desulfurization and denitrification integrated purification tower provided by the utility model.
FIG. 6 is a cross-sectional view of the E-E direction in the integrated purification tower for desulfurization and denitrification provided by the utility model.
Fig. 7 is a schematic structural diagram of a flue gas mixer in the desulfurization and denitrification integrated purification tower provided by the utility model.
FIG. 8 is a cross-sectional view along the X-X direction of the integrated purification tower for desulfurization and denitrification provided by the utility model.
FIG. 9 is a cross-sectional view in the Y-Y direction of the integrated purification tower for desulfurization and denitrification provided by the utility model.
Reference numerals: 1. a smoke inlet chamber; 101. a smoke inlet; 2. a primary purification tower; 201. a lower cone hopper; 202. a second buffer plate; 203. a discharger; 204. a middle cone hopper; 4. a transition smoke chamber; 401. an ammonia spraying pipe; 402. a flue gas mixer; 403. a first baffle; 6. a secondary purification tower; 601. a first buffer plate; 602. an upper cone hopper; 603. a feed inlet; 8. a smoke outlet chamber; 801. a smoke outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-9, the desulfurization and denitrification integrated purification tower provided by the utility model comprises a smoke inlet chamber 1, two primary purification towers 2, two transition smoke chambers 4, two secondary purification towers 6, a smoke outlet chamber 8 and two dumpers 203; the smoke inlet chamber 1 is provided with a smoke inlet 101;
the two primary purification towers 2 are respectively positioned at two sides of the smoke inlet chamber 1 and are communicated with the smoke inlet chamber 1, and a lower cone hopper 201, a second buffer plate 202 and a middle cone hopper 204 are arranged in each primary purification tower 2;
the feeding port of each lower cone hopper 201 is connected with the discharge port of each primary purification tower 2, and the lower outlet of each lower cone hopper 201 is connected with the feeding port of each discharger 203;
the discharge port of each middle cone hopper 204 is connected with the feed inlet of each primary purification tower 2, and the feed port of each middle cone hopper 204 is connected with the discharge port of each secondary purification tower 6; the two secondary purification towers 6 are respectively positioned above the two primary purification towers 2 and correspond to each other one by one;
each secondary purification tower 6 is provided with an upper conical hopper 602; each upper cone hopper 602 is provided with a feeding hole 603 for communicating a storage bin; the discharge port of the bin is communicated with the feed port 603, a check valve is arranged at the discharge port of the bin, and the activated carbon in the bin can be added into the upper cone hopper 602 from the feed port 603 by opening the check valve;
a first buffer plate 601 is arranged in each secondary purification tower 6;
the two transition smoke chambers 4 are respectively positioned at two sides of each primary purification tower 2 and each secondary purification tower 6, each transition smoke chamber 4 is respectively communicated with each primary purification tower 2 and each secondary purification tower 6, and an ammonia spraying pipe 401, a smoke mixer 402 and a first guide plate 403 are arranged in each transition smoke chamber 4; a nozzle is arranged at the ammonia spraying pipe orifice of the ammonia spraying pipe 401;
the flue gas mixer 402 is positioned above an ammonia outlet of the ammonia injection pipe 401, and the flue gas mixer 402 is positioned below the first guide plate 403;
the smoke outlet 801 is arranged on the smoke outlet chamber 8, the smoke outlet chamber 8 is positioned above the smoke inlet chamber 1 and between the two secondary purification towers 6, and the smoke outlet chamber 8 is respectively communicated with the two secondary purification towers 6.
In one embodiment of the utility model, when in use, the smoke to be treated enters the smoke inlet chamber 1 from the smoke inlet 101 on the smoke inlet chamber 1, the smoke in the smoke inlet chamber 1 enters the primary purification towers 2 at two sides of the smoke inlet chamber, and the smoke entering the two primary purification towers 2 and the active carbon particles in the smoke inlet towers react with each other to complete the desulfurization of the smoke; the desulfurized flue gas enters the two transition smoke chambers 4, the flue gas entering the two transition smoke chambers 4 acts on ammonia gas sprayed by the ammonia spraying pipe 401, wherein a flue gas mixer 402 arranged in each transition smoke chamber 4 can uniformly and fully mix the flue gas and the ammonia gas, the uniformly mixed flue gas and the ammonia gas enter the two secondary purification towers 6 under the action of the first guide plate 403, the mixed flue gas acts on active carbon in the two secondary purification towers 6 to complete a denitration process, the flue gas subjected to desulfurization and denitration enters the smoke outlet chamber 8 and is finally discharged from a smoke outlet 801 on the smoke outlet chamber 8, and the desulfurization and denitration integration is realized; the occupied area is saved;
in addition, the activated carbon in the two primary purification towers and the two secondary purifications is continuously discharged through two dischargers respectively; with the active carbon in the feed bin from two feed inlets 603 on the awl fill 602 add two second grade purifying towers 6 and two one-level purifying towers 2, when the active carbon flows downwards under the action of gravity, owing to the effect of the first buffer board 601 and the second buffer board 202 that are equipped with has reduced the high drop of active carbon, thereby reduced the broken rate of active carbon, and then reduced the running cost of this device, improve the efficiency of carrying out SOx/NOx control to the flue gas greatly, prolong the maintenance cycle of equipment greatly.
In an alternative embodiment, the nozzle of each nozzle is vertically upward, so that the ammonia gas sprayed from the nozzles is consistent with the flow direction of the flue gas, and the treatment effect on the flue gas is improved.
In an alternative embodiment, each second buffer plate 202 and each first buffer plate 601 are arranged in the same direction as the tower section bending plate of the purification tower, and the included angle between the two sides of each second buffer plate 202 and each first buffer plate 601 is 55-60 °.
In an alternative embodiment, the ammonia injection pipe 401, the flue gas mixer 402 and the first baffle 403 in each transition flue box 4 are distributed side by side with the middle cone 204 on each side.
In an alternative embodiment, each flue gas mixer 402 includes a plurality of second baffles; the flow guide directions of the second guide plates are different, and flue gas entering the transition smoke chamber 4 can be uniformly mixed with the sprayed ammonia gas through the arranged flue gas mixer 402.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. A desulfurization and denitrification integrated purification tower is characterized by comprising a smoke inlet chamber (1), two primary purification towers (2), two transition smoke chambers (4), two secondary purification towers (6), a smoke outlet chamber (8) and two dischargers (203); a smoke inlet (101) is arranged on the smoke inlet chamber (1);
the two primary purification towers (2) are respectively positioned at two sides of the smoke inlet chamber (1) and are communicated with the smoke inlet chamber (1), and a lower cone hopper (201), a second buffer plate (202) and a middle cone hopper (204) are arranged in each primary purification tower (2); the feeding port of each lower cone hopper (201) is connected with the discharge port of each primary purification tower (2), and the lower outlet of each lower cone hopper (201) is connected with the feeding port of each discharger (203);
the discharge port of each middle cone hopper (204) is connected with the feed inlet of each primary purification tower (2), and the feed port of each middle cone hopper (204) is connected with the discharge port of each secondary purification tower (6); the two secondary purification towers (6) are respectively positioned above the two primary purification towers (2) and correspond to each other one by one;
each secondary purification tower (6) is provided with an upper conical hopper (602); each upper conical hopper (602) is provided with a feed inlet (603) for communicating a storage bin; a first buffer plate (601) is arranged in each secondary purification tower (6);
the two transition smoke chambers (4) are respectively positioned at two sides of each primary purification tower (2) and each secondary purification tower (6), each transition smoke chamber (4) is respectively communicated with each primary purification tower (2) and each secondary purification tower (6), and an ammonia spraying pipe (401), a smoke mixer (402) and a first guide plate (403) are arranged in each transition smoke chamber (4); a nozzle is arranged at the ammonia spraying pipe orifice of the ammonia spraying pipe (401);
the flue gas mixer (402) is positioned above an ammonia outlet of the ammonia injection pipe (401), and the flue gas mixer (402) is positioned below the first guide plate (403);
a smoke outlet (801) is arranged on the smoke outlet chamber (8), the smoke outlet chamber (8) is positioned above the smoke inlet chamber (1) and between the two secondary purification towers (6), and the smoke outlet chamber (8) is respectively communicated with the two secondary purification towers (6).
2. The integrated purification tower for desulfurization and denitrification according to claim 1, wherein the spout of each nozzle is vertically upward.
3. The integrated purification tower for desulfurization and denitrification according to claim 1, wherein each second buffer plate (202) and each first buffer plate (601) are arranged in the same direction as the tower section bending plate of the purification tower, and the included angle between the two sides of each second buffer plate (202) and each first buffer plate (601) is 55-60 degrees.
4. The integrated purification tower for desulfurization and denitrification according to claim 1, wherein the ammonia injection pipe (401), the flue gas mixer (402) and the first guide plate (403) in each transition flue chamber (4) are distributed side by side with the middle cone (204) on each side.
5. The integrated desulfurization and denitrification purification tower according to claim 1, wherein each flue gas mixer (402) comprises a plurality of second flow deflectors; the flow guide directions of the plurality of second flow guide plates are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121211959.1U CN215610420U (en) | 2021-06-01 | 2021-06-01 | Desulfurization and denitrification integrated purification tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121211959.1U CN215610420U (en) | 2021-06-01 | 2021-06-01 | Desulfurization and denitrification integrated purification tower |
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| CN215610420U true CN215610420U (en) | 2022-01-25 |
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| CN202121211959.1U Active CN215610420U (en) | 2021-06-01 | 2021-06-01 | Desulfurization and denitrification integrated purification tower |
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