CN211487164U - Arrangement structure of nozzles in wet desulphurization tower - Google Patents
Arrangement structure of nozzles in wet desulphurization tower Download PDFInfo
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- CN211487164U CN211487164U CN201922485142.2U CN201922485142U CN211487164U CN 211487164 U CN211487164 U CN 211487164U CN 201922485142 U CN201922485142 U CN 201922485142U CN 211487164 U CN211487164 U CN 211487164U
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Abstract
The application provides an arrangement structure of nozzles in a wet desulphurization tower, wherein the nozzles on the same spraying layer in the desulphurization tower are arranged in a subarea way and are arranged non-uniformly; the cross section of the cavity in the spray area in the desulfurizing tower is divided into three areas: the area I is positioned in the position close to the flue gas inlet in the desulfurizing tower; the III area is positioned in the position far away from the flue gas inlet in the desulfurizing tower; the second zone is a zone positioned between the first zone and the third zone; the distance between two adjacent nozzles in the area I is larger than the distance between two adjacent nozzles in the area II is larger than the distance between two adjacent nozzles in the area III; the flue gas flow far away from the flue gas inlet is larger, more spray desulfurization liquid is required to be fully contacted with the flue gas, the flue gas flow near the flue gas inlet is small, and the requirements of the heat and mass transfer process can be met only by less spray amount; thereby improving the spray field in the desulfurizing tower, satisfying the optimal matching of the flue gas in the desulfurizing tower and the spray desulfurizing liquid, and improving the desulfurizing efficiency of the desulfurizing spray tower.
Description
Technical Field
The utility model belongs to the technical field of wet flue gas desulfurization technique and specifically relates to an arrangement structure of nozzle in wet flue gas desulfurization tower is related to.
Background
The mainstream desulfurization technology adopted by the domestic thermal power plant at present is wet countercurrent spray desulfurization in a desulfurization tower, the conventional design of nozzles in the desulfurization tower is that the nozzles are uniformly arranged in the cross section of the upper part of the desulfurization tower and are equidistantly arranged at different radiuses of the desulfurization tower, and the equidistant arrangement mode ensures the uniform distribution of the sprayed desulfurization solution on the whole cross section.
However, the flue gas enters the desulfurizing tower from a flue gas inlet (only one flue gas inlet is a single flue gas inlet) on the side wall of the desulfurizing tower, so that the flue gas flow field on the cross section of the cavity in the desulfurizing tower is unevenly distributed, the flue gas flow far away from the flue gas inlet is larger than the flue gas flow near the flue gas inlet, the diameter and the cross section area of the desulfurizing tower are also larger and larger along with the increase of the unit capacity of a thermal power plant, and for a 1000MW unit, the diameter of the desulfurizing tower is about 20 meters, so that the unevenness of the flue gas flow field on the cross section of the cavity in the desulfurizing tower can be greatly increased.
Therefore, SO in the desulfurizing tower2The desulfurization liquid spray field and the flue gas flow field in the absorption area are not matched, so that the uniform and sufficient contact of the flue gas and the desulfurization liquid is influenced, the effective mass transfer area of the gas and the liquid is reduced, and the desulfurization efficiency of the desulfurization tower is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at provide an arrangement structure of nozzle in wet flue gas desulfurization tower to overcome the problem that nozzle arrangement exists in the current desulfurizing tower, provide a novel arrangement of nozzle in the desulfurizing tower, make the tower in spray the distribution law that the field is fit for the flue gas flow field, improve the homogeneity and the abundant degree of flue gas and doctor solution contact, improve the desulfurization efficiency of desulfurizing tower, reach the tower in flue gas flow field and the doctor solution spray the best matching in field.
For solving the above technical problem, the utility model provides a technical scheme does:
the arrangement structure of the spray nozzles in the wet desulphurization tower is characterized in that the spray nozzles on the same spray layer in the desulphurization tower are arranged in a subarea way and are arranged non-uniformly;
the cross section of the cavity in the spray area in the desulfurizing tower is divided into three areas: the area I is positioned in the position close to the flue gas inlet in the desulfurizing tower; the III area is positioned in the position far away from the flue gas inlet in the desulfurizing tower; the second zone is a zone positioned between the first zone and the third zone;
the distance between two adjacent nozzles in the area I is larger than the distance between two adjacent nozzles in the area II is larger than the distance between two adjacent nozzles in the area III.
Preferably, the cross section of the cavity in the spray zone in the desulfurization tower is divided into three zones by two parallel straight lines;
zone I is an arcuate surface, and the maximum width L of zone I1Comprises the following steps: l/5 is not more than L1≤D/3；
The area between two parallel straight lines is zone II, the width L of zone II2Comprises the following steps: (L)1+L2)≤3D/4；
Zone III being arcuate, zone III having a maximum width L3Comprises the following steps: (L)1+L2+L3) D; wherein D is the diameter of the cross section of the cavity in the spray zone in the desulfurization tower.
Preferably, the distance between two adjacent nozzles in zone i is: d is not less than 1.151≤1.3；
The distance between two adjacent nozzles in the area II: d is more than or equal to 0.92≤1.05；
Spacing between two adjacent nozzles in zone iii: d is not less than 0.753Less than 0.9; wherein the nozzle spacing is designed when the nozzles in the desulfurizing tower are uniformly arranged.
The application provides an arrangement structure of nozzles in a wet desulphurization tower, wherein the nozzles on the same spraying layer in the desulphurization tower are arranged in a subarea way and are arranged non-uniformly;
the cross section of the cavity in the spray area in the desulfurizing tower is divided into three areas: the area I is positioned in the position close to the flue gas inlet in the desulfurizing tower; the III area is positioned in the position far away from the flue gas inlet in the desulfurizing tower; the second zone is a zone positioned between the first zone and the third zone;
the distance between two adjacent nozzles in the area I is larger than the distance between two adjacent nozzles in the area II is larger than the distance between two adjacent nozzles in the area III;
flue gas discharged by a boiler enters a spray area of a desulfurizing tower, then releases heat and absorbs moisture and conducts heat and mass transfer with an absorbent in spray desulfurizing liquid, a flue gas flow field on the cross section of a cavity in the desulfurizing tower is unevenly distributed due to a flue gas inlet mode of a single flue gas inlet, the flue gas flow on one side far away from the flue gas inlet is larger, the heat and moisture release capacity is large, and SO carried in the flue gas is large2More spraying desulfurizing liquid is needed to be fully contacted with the flue gas SO as to provide enough moisture and SO for heat release and moisture absorption of the flue gas2An absorbent for the absorption reaction; the flue gas flow rate at one side close to the flue gas inlet is small, and the requirement of the heat and mass transfer process can be met only by less spraying amount. The utility model discloses owing to adopted the subregion of nozzle to arrange and inhomogeneous the arranging, improved the spray field in the desulfurizing tower, satisfied the inside flue gas of desulfurizing tower and sprayed the optimal matching of doctor solution, improved the desulfurizationAnd (4) desulfurization efficiency of the spray tower.
Drawings
FIG. 1 is a schematic structural diagram of an arrangement structure of nozzles in a wet desulfurization tower provided by the present application (the desulfurization tower in FIG. 1 is in a vertical posture);
fig. 2 is a schematic top view of a nozzle arrangement in a cross section of a cavity in a spray zone in the desulfurization tower of fig. 1.
In the figure: 1 desulfurizing tower, 2 flue gas inlets and 3 nozzles.
Detailed Description
For further understanding of the present invention, preferred embodiments of the present invention will be described below with reference to examples, but it should be understood that these descriptions are only intended to further illustrate the features and advantages of the present invention, and are not intended to limit the claims of the present invention.
The application provides an arrangement structure of nozzles in a wet desulphurization tower, wherein the nozzles 3 on the same spraying layer in the desulphurization tower 1 are arranged in a subarea way and are arranged non-uniformly;
the cross section of the cavity in the spray zone in the desulfurizing tower 1 is divided into three zones: the area I is positioned in the desulfurizing tower 1 and close to the flue gas inlet 2; the area III is positioned in the desulfurizing tower 1 far away from the flue gas inlet 2; the second zone is a zone positioned between the first zone and the third zone;
the distance between two adjacent nozzles 3 in zone I > the distance between two adjacent nozzles 3 in zone II > the distance between two adjacent nozzles 3 in zone III.
In an embodiment of the present application, in the arrangement structure of the nozzles in the wet desulfurization tower, two parallel straight lines divide the cross section of the cavity in the tower of the spray zone in the desulfurization tower 1 into three zones;
zone I is an arcuate surface, and the maximum width L of zone I1Comprises the following steps: l/5 is not more than L1≤D/3；
The area between two parallel straight lines is zone II, the width L of zone II2Comprises the following steps: (L)1+L2)≤3D/4；
Zone III being arcuate, zone IIIMaximum width L of3Comprises the following steps: (L)1+L2+L3) D; wherein D is the diameter of the cross section of the cavity in the spray zone in the desulfurization tower 1.
In the present application, the desulfurization tower 1 includes a plurality of spray layers from top to bottom (in fig. 1, a total of 3 spray layers are included), and the area sizes of the i, ii, or iii regions in the different spray layers may be the same or different.
In an embodiment of the present application, in the above arrangement structure of the nozzles in the wet desulfurization tower, the distance between two adjacent nozzles 3 in the zone i is: d is not less than 1.151≤1.3；
The distance between two adjacent nozzles 3 in zone ii: d is more than or equal to 0.92≤1.05；
Spacing between two adjacent nozzles 3 in zone iii: d is not less than 0.753Less than 0.9; wherein the distance between the nozzles 3 is designed when the nozzles 3 in the desulfurizing tower 1 are uniformly arranged.
In the present application, the desulfurization tower 1 includes a plurality of spray layers from top to bottom (a total of 3 spray layers is included in fig. 1), and the distances between two adjacent nozzles 3 in different spray layers, which are all located in zone i, may be the same or different; the spacing between two adjacent nozzles 3 in different spray levels, but all in zone ii, may be the same or different; the spacing between two adjacent nozzles 3 in different spray levels, but all located in zone iii, may be the same or different.
In order to further understand the present invention, the following embodiments are combined to describe the arrangement structure of the nozzles in the wet desulphurization tower in detail, and the scope of protection of the present invention is not limited by the following embodiments.
Example 1
A spray nozzle arrangement structure in a wet desulphurization tower, the spray nozzles 3 on the same spray layer in the desulphurization tower 1 are arranged in a subarea way and are arranged non-uniformly;
the cross section of the cavity in the spray zone in the desulfurizing tower 1 is divided into three zones by two parallel straight lines;
zone I is an arcuate surface, the most important of zone ILarge width L1Comprises the following steps: l is1＝D/4；
The area between two parallel straight lines is zone II, the width L of zone II2Comprises the following steps: l is2＝2D/4；
Zone III being arcuate, zone III having a maximum width L3Comprises the following steps: l is3D/4; wherein D is the diameter of the cross section of the cavity in the spray zone in the desulfurizing tower 1;
the distance between two adjacent nozzles 3 in zone i: d1＝1.2；
The distance between two adjacent nozzles 3 in zone ii: d2＝0.95；
Spacing between two adjacent nozzles 3 in zone iii: d30.8; wherein the distance between the nozzles 3 is designed when the nozzles 3 in the desulfurizing tower 1 are uniformly arranged.
Through detection, the spray nozzles 3 in the embodiment 1 are arranged in different regions and in different non-uniform arrangement, so that a spray field in the desulfurization tower 1 is improved, the optimal matching of the flue gas in the desulfurization tower 1 and the sprayed desulfurization solution is met, and the desulfurization efficiency of the desulfurization spray tower is improved.
Example 2
A spray nozzle arrangement structure in a wet desulphurization tower, the spray nozzles 3 on the same spray layer in the desulphurization tower 1 are arranged in a subarea way and are arranged non-uniformly;
the cross section of the cavity in the spray zone in the desulfurizing tower 1 is divided into three zones by two parallel straight lines;
zone I is an arcuate surface, and the maximum width L of zone I1Comprises the following steps: l is1＝D/5；
The area between two parallel straight lines is zone II, the width L of zone II2Comprises the following steps: l is2＝2D/5；
Zone III being arcuate, zone III having a maximum width L3Comprises the following steps: l is32D/5; wherein D is the diameter of the cross section of the cavity in the spray zone in the desulfurizing tower 1;
the distance between two adjacent nozzles 3 in zone i: d1＝1.3；
The distance between two adjacent nozzles 3 in zone ii: d2＝0.9；
Spacing between two adjacent nozzles 3 in zone iii: d30.75; wherein the distance between the nozzles 3 is designed when the nozzles 3 in the desulfurizing tower 1 are uniformly arranged.
Through detection, the spray field in the desulfurizing tower 1 is improved by adopting the partition arrangement and the non-uniform arrangement of the nozzles 3 in the embodiment 2, the optimal matching of the flue gas in the desulfurizing tower 1 and the sprayed desulfurizing liquid is met, and the desulfurizing efficiency of the desulfurizing spray tower is improved.
The method and the device not described in detail in the present invention are prior art and are not described in detail.
The principles and embodiments of the present invention have been explained herein using specific embodiments, which are merely used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (3)
1. The arrangement structure of the nozzles in the wet desulphurization tower is characterized in that the nozzles on the same spraying layer in the desulphurization tower are arranged in a subarea way and are arranged non-uniformly;
the cross section of the cavity in the spray area in the desulfurizing tower is divided into three areas: the area I is positioned in the position close to the flue gas inlet in the desulfurizing tower; the III area is positioned in the position far away from the flue gas inlet in the desulfurizing tower; the second zone is a zone positioned between the first zone and the third zone;
the distance between two adjacent nozzles in the area I is larger than the distance between two adjacent nozzles in the area II is larger than the distance between two adjacent nozzles in the area III.
2. The arrangement structure of the nozzles in the wet desulphurization tower according to claim 1, wherein the cross section of the cavity in the tower of the spray zone in the desulphurization tower is divided into three zones by two parallel straight lines;
zone I is an arcuate surface, and the maximum width L of zone I1Comprises the following steps: l/5 is not more than L1≤D/3；
The area between two parallel straight lines is zone II, the width L of zone II2Comprises the following steps: (L)1+L2)≤3D/4；
Zone III being arcuate, zone III having a maximum width L3Comprises the following steps: (L)1+L2+L3) D; wherein D is the diameter of the cross section of the cavity in the spray zone in the desulfurization tower.
3. The arrangement structure of nozzles in a wet desulfurization tower according to claim 2, wherein the distance between two adjacent nozzles in zone i is: d is not less than 1.151≤1.3；
The distance between two adjacent nozzles in the area II: d is more than or equal to 0.92≤1.05；
Spacing between two adjacent nozzles in zone iii: d is not less than 0.753Less than 0.9; wherein the nozzle spacing is designed when the nozzles in the desulfurizing tower are uniformly arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922485142.2U CN211487164U (en) | 2019-12-31 | 2019-12-31 | Arrangement structure of nozzles in wet desulphurization tower |
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| CN201922485142.2U CN211487164U (en) | 2019-12-31 | 2019-12-31 | Arrangement structure of nozzles in wet desulphurization tower |
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| CN211487164U true CN211487164U (en) | 2020-09-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230871A (en) * | 2021-05-08 | 2021-08-10 | 西安热工研究院有限公司 | Spraying layer partition adjusting desulfurization absorption tower based on concentration field distribution at outlet of absorption tower |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230871A (en) * | 2021-05-08 | 2021-08-10 | 西安热工研究院有限公司 | Spraying layer partition adjusting desulfurization absorption tower based on concentration field distribution at outlet of absorption tower |
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