CN113663501A - Spray layer and desulfurizing tower - Google Patents
Spray layer and desulfurizing tower Download PDFInfo
- Publication number
- CN113663501A CN113663501A CN202110807202.7A CN202110807202A CN113663501A CN 113663501 A CN113663501 A CN 113663501A CN 202110807202 A CN202110807202 A CN 202110807202A CN 113663501 A CN113663501 A CN 113663501A
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- Prior art keywords
- spray
- spraying
- nozzles
- pipe group
- spraying pipe
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- 239000007921 spray Substances 0.000 title claims abstract description 75
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 81
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 29
- 230000023556 desulfurization Effects 0.000 claims abstract description 29
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000011521 glass Substances 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 239000002002 slurry Substances 0.000 description 7
- 239000011152 fibreglass Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to the technical field of coal-fired boiler desulfurization, in particular to a spray layer and a desulfurizing tower, which comprise: the first spraying pipe group and the second spraying pipe group are fixedly arranged in the flue gas channel of the desulfurizing tower; the first circulating pump and the second circulating pump are respectively used for supplying liquid to the first spraying pipe group and the second spraying pipe group; the first spraying pipe group is provided with a plurality of first nozzles which can cover the flue gas channel in a spraying state, and the second spraying pipe group is provided with second nozzles which are distributed among the first nozzles at intervals; according to the invention, two sets of spraying systems for independently supplying liquid are established on one spraying layer, the nozzles of the two sets of spraying systems are distributed at intervals, one set can meet the requirement of low desulfurization load when in operation, and the two sets can meet the requirement of high desulfurization load when in operation simultaneously, so that the purposes of flexible adjustment and power consumption saving are achieved, and the spraying of at least two spraying layers is met, and the safe operation is ensured.
Description
Technical Field
The invention relates to the technical field of coal-fired boiler desulfurization, in particular to a spray layer and a desulfurization tower.
Background
At present, most of spraying layers in a flue gas wet desulphurization tower of a coal-fired power plant are made of units, namely, one circulating pump corresponds to one spraying layer; the few adopt the header system, and many circulating pumps correspond one deck and spray the layer promptly. In the spraying layer of the main pipe slurry supply, all nozzles work simultaneously, so that the whole spraying layer is sprayed by the slurry supply basically in a quantitative mode, namely the circulation amount of a single spraying layer cannot be adjusted. When the flue gas desulfurization load demand changes, adapt to the desulfurization load demand through the quantity of commissioning in spraying the layer, this regulation is discontinuous, and the interval is very big, and this must cause the waste.
In another case: when the requirement of desulfurization load is very low, from the required desulfurization efficiency, two spray layers are not needed to be put into operation at the same time, but at least two spray layers are put into operation at the same time from the safe operation specification of the desulfurization tower. This also results in a large waste of electricity.
Prior art documents:
patent document 1: spray layer device in CN206334526U desulfurization system
Disclosure of Invention
The invention aims to provide a spraying layer and a desulfurizing tower, wherein the spraying layer can meet the requirement of uniform spraying and full coverage no matter a single pump operates or two pumps operate, so that the flexibility of adjusting the total amount of spraying slurry of the desulfurizing tower can be increased, and the aim of saving power consumption is fulfilled.
In order to achieve the above object, the present invention provides a spray layer comprising:
the first spraying pipe group and the second spraying pipe group are fixedly arranged in the flue gas channel of the desulfurizing tower;
the first circulating pump and the second circulating pump are respectively used for supplying liquid to the first spraying pipe group and the second spraying pipe group;
the first spraying pipe group is provided with a plurality of first nozzles which can cover the flue gas channel in a spraying state, and the second spraying pipe group is provided with second nozzles which are distributed among the first nozzles at intervals;
the first nozzles are divided into two layers and arranged above and below the first spraying pipe group, and the second nozzles are divided into two layers and arranged above and below the second spraying pipe group.
Preferably, the first nozzle and the second nozzle are distributed in a centrosymmetric manner by taking the axis of the flue gas channel of the desulfurization tower as the center.
Preferably, the first shower group is positioned above the second shower group and fixed with the second shower group.
Preferably, the first spray pipe group comprises a plurality of first spray branch pipes, the second spray pipe group comprises a second spray branch pipe with the number corresponding to that of the first spray branch pipes, and the central projections of the first spray branch pipes and the second spray branch pipes in the vertical plane coincide.
Preferably, the first spray branch pipe and the second spray branch pipe are fixed through a hoop-shaped connector.
Preferably, the first nozzle and the second nozzle comprise hollow cone nozzles.
Preferably, the first spray branch pipe and the second spray branch pipe are fixed through a hoop-shaped connector.
Preferably, the first spray branch pipe and the first nozzle are connected through a short all-glass-fiber-reinforced-plastic pipe, and the second spray branch pipe and the second nozzle are connected through a short all-glass-fiber-reinforced-plastic pipe.
Preferably, the first spray branch pipe and the second spray branch pipe each comprise a small-diameter section, a medium-diameter section and a large-diameter section.
Preferably, the diameters of the first spray branch pipe and the second spray branch pipe are the same.
The invention provides another technical scheme, and a desulfurizing tower comprises the spraying layer.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a spray layer of the present invention;
FIG. 2 is a schematic structural view of a fixing manner of the spray branch pipes in the spray layer according to the present invention;
FIG. 3 is a schematic diagram of the spraying status of one group of spraying pipe groups in the spraying layer of the invention;
fig. 4 is a schematic diagram of the simultaneous spraying state of two groups of spraying pipe sets of the spraying layer.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, including spray levels and desulfurization towers, as the disclosed concepts and embodiments are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
In the present technique, spray the layer and supply the oar to spray for the ration, and when flue gas desulfurization load demand changed, only can change through the input quantity that sprays the layer, in addition, when desulfurization load was very low, two-layer spraying layer was put into operation simultaneously and can be caused the power consumption extravagant. The invention aims to realize that two sets of independent liquid supply spraying systems are established on one spraying layer, the nozzles of the two sets of spraying systems are distributed at intervals, one set of spraying systems can ensure the low desulfurization load requirement when in operation, and the two sets of spraying systems can meet the high desulfurization load requirement when in operation at the same time, thereby achieving the purpose of flexible adjustment and meeting the spraying requirements of at least two spraying layers.
The embodiment provides a spraying layer, which mainly comprises two sets of spraying systems independently supplying liquid. Each spray system includes a circulation pump and a bank of spray tubes. The spraying layer is arranged in a desulfurization tower for wet flue gas desulfurization, limestone slurry is conveyed to the spraying layers arranged at different heights in the tower by a circulating pump, and dispersed slurry drops are sprayed out by a nozzle; the flue gas flows from bottom to top, and the gas and the liquid are fully contacted with each other to SO2And washing and removing.
Referring to fig. 1, a first spray pipe group 1 and a second spray pipe group 2 are fixedly arranged in a flue gas channel of a desulfurization tower. The first circulating pump and the second circulating pump are respectively used for supplying liquid to the first spraying pipe group 1 and the second spraying pipe group 2. Thus, the first spraying pipe group 1 and/or the second spraying pipe group 2 can spray limestone slurry into the flue gas channel for desulfurization and washing.
Furthermore, the first shower group 1 is provided with a plurality of first nozzles 104 capable of covering the flue gas channel with spray in a spraying state, and the second shower group 2 is provided with second nozzles 105 which are distributed at intervals between the first nozzles 104. As shown in fig. 1, the first nozzles 104 or the second nozzles 105 located at the periphery are arranged on the same circumference to achieve good spray coverage.
Wherein the first nozzle 104 and the second nozzle 105 are connected to the spray branch pipe by all-glass fiber reinforced plastic short pipes to form a distribution state as shown in figure 1. In an alternative embodiment, the first nozzle 104 and the second nozzle 105 are hollow cone nozzles, which can form a cone spray surface to cover and contact the flue gas.
Further, the first nozzles 104 are divided into two layers to be arranged above and below the first spray pipe group 1, the second nozzles 105 are divided into two layers to be arranged above and below the second spray pipe group 2, preferably, the first nozzles 104 and the second nozzles 105 which are positioned above are arranged in one plane, and the first nozzles 104 and the second nozzles 105 which are positioned below are arranged in one plane, so that the two spray layers formed in the way are uniformly covered, and the effect of fully washing is achieved.
In the preferred example, the first nozzle 104 and the second nozzle 105 are arranged in a central symmetrical manner with respect to the axis of the flue gas channel of the desulfurization tower. Thus, as shown in fig. 3, the first nozzle 104 covers a large area in the spraying state, and almost occupies the entire flue gas channel. As shown in connection with fig. 4. When the first nozzle 104 and the second nozzle 105 are in a spraying state at the same time, the spraying coverage is denser, the spraying effect is further improved, and the requirement of higher desulfurization load can be met.
As shown in fig. 3 to 4, the nozzles of the first and second shower groups 1 and 2 are uniformly arranged and have good spraying coverage, so as to meet the requirement of low desulfurization load, while the overlapping spraying coverage of the nozzles of the first and second shower groups 1 and 2 is more excellent, so as to meet the requirement of high desulfurization load.
Thus, through the independent 50% + 50% slurry amount spraying composition, one group of 50% amount spraying can be realized, and the 50% + 50% amount spraying can also be realized simultaneously to be 100% amount spraying, and the flexible configuration can be realized according to the requirements.
In an alternative embodiment, shown in connection with fig. 2, the first shower group 1 includes a first shower branch a11, a first shower branch b12, a first shower branch c13, a first shower branch d14, and a first shower branch e15, and the second shower group 2 includes a second shower branch a21, a second shower branch b22, a second shower branch c23, a second shower branch d24, and a second shower branch e 25.
Specifically, in an alternative embodiment, as shown in fig. 2, the shower branch pipe is a three-step pipe member, and includes a small diameter section 101, a medium diameter section 102, and a large diameter section 103, wherein when two shower branch pipes fixed to each other, for example, a first shower branch pipe a11 and a second shower branch pipe a21, are fixed, the large diameter section 103 of the first shower branch pipe a11 and the small diameter section 101 of the second shower branch pipe a21 are attached to each other, and the medium diameter section 102 of the first shower branch pipe a11 and the medium diameter section 102 of the second shower branch pipe a21 are attached to each other.
In an alternative embodiment, the spray branch pipe can also be a pipe with the same diameter, wherein the spray branch pipe and the liquid supply pipe connected with the branch pipe are made of carbon steel, the inner lining and the outer lining are made of rubber, and the short pipe connected with the spray head is made of all-glass fiber reinforced plastics, so that the service life is ensured.
Further, the first shower group 1 is located above the second shower group 2, and is fixed to the second shower group 2. Wherein the central projections of the first spray branch pipes a-e (11-15) and the second spray branch pipes a-e (21-25) in the vertical plane are coincident.
In a preferred embodiment, as shown in fig. 2, the first branch shower pipe and the second branch shower pipe are fixed by a hoop-type connector, so that the two branch shower pipes are connected into a whole, that is, the height of the self-supporting beam is increased, the supporting strength is improved, and additional supporting points can be reduced.
The invention provides another technical scheme, and the desulfurizing tower comprises at least one spraying layer, and spraying configuration can be more flexibly carried out according to requirements through two independent industrial circulating pumps.
By combining the above embodiments, the invention establishes two sets of spraying systems independently supplying liquid on one spraying layer, the nozzles of the two sets of spraying systems are distributed at intervals, one set can ensure low desulfurization load demand when in operation, and the two sets can meet high desulfurization load demand when in operation at the same time, thereby achieving the purposes of flexible adjustment and power consumption saving, and meeting the spraying requirements of at least two spraying layers, and ensuring safe operation.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. A spray layer, comprising:
the first spraying pipe group and the second spraying pipe group are fixedly arranged in the flue gas channel of the desulfurizing tower;
the first circulating pump and the second circulating pump are respectively used for supplying liquid to the first spraying pipe group and the second spraying pipe group;
the first spraying pipe group is provided with a plurality of first nozzles which can cover the flue gas channel in a spraying state, and the second spraying pipe group is provided with second nozzles which are distributed among the first nozzles at intervals;
the first nozzles are divided into two layers and arranged above and below the first spraying pipe group, and the second nozzles are divided into two layers and arranged above and below the second spraying pipe group.
2. The spray layer of claim 1, wherein the first and second nozzles are arranged in a central symmetry about the axis of the flue gas channel of the desulfurization tower.
3. The spray layer of claim 1 wherein the first bank of spray tubes is positioned above and secured to the second bank of spray tubes.
4. The spray layer of claim 1 wherein the first bank of spray pipes comprises a plurality of first spray manifolds, and the second bank of spray pipes comprises a corresponding number of second spray manifolds to the first spray manifolds, the first and second spray manifolds having a central projection in the vertical plane that coincides.
5. The spray layer of claim 4 wherein the first and second spray manifolds are secured by a hoop-type connection.
6. The spray layer of claim 4 wherein the first spray manifold and the first spray nozzles are connected by an all-glass steel stub pipe and the second spray manifold and the second spray nozzles are connected by an all-glass steel stub pipe.
7. The spray layer of claim 4 wherein the first and second spray manifolds each comprise a small diameter section, a medium diameter section, and a large diameter section.
8. The spray layer of claim 1 wherein the first and second spray manifolds are the same diameter.
9. The spray layer of claim 1 wherein the first and second nozzles comprise hollow cone nozzles.
10. A desulfurization tower comprising at least one spray layer according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807202.7A CN113663501A (en) | 2021-07-16 | 2021-07-16 | Spray layer and desulfurizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807202.7A CN113663501A (en) | 2021-07-16 | 2021-07-16 | Spray layer and desulfurizing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113663501A true CN113663501A (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110807202.7A Pending CN113663501A (en) | 2021-07-16 | 2021-07-16 | Spray layer and desulfurizing tower |
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| Country | Link |
|---|---|
| CN (1) | CN113663501A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068971A (en) * | 1991-07-26 | 1993-02-17 | 巴布考克和威尔科斯公司 | The single spray level that is used for FGD system |
| US5620144A (en) * | 1995-02-10 | 1997-04-15 | The Babcock & Wilcox Company | Stacked interspacial spray header for FGD wet scrubber |
| KR20120140081A (en) * | 2011-06-20 | 2012-12-28 | 한국남부발전 주식회사 | Wet scrubber with multi-stage spray structure |
| CN104857836A (en) * | 2015-05-12 | 2015-08-26 | 浙江天地环保工程有限公司 | Flue gas desulfurization absorber interactive spray system |
| JP2016055244A (en) * | 2014-09-09 | 2016-04-21 | 三菱日立パワーシステムズ株式会社 | Flue gas treatment apparatus |
| CN212068329U (en) * | 2020-04-17 | 2020-12-04 | 上海龙净环保科技工程有限公司 | Wet flue gas desulfurization energy-saving control device |
| CN112604489A (en) * | 2020-12-07 | 2021-04-06 | 昆岳互联环境技术(江苏)有限公司 | Wet flue gas desulfurization device capable of adjusting operation parameters according to variable quantity |
| CN216703930U (en) * | 2021-07-16 | 2022-06-10 | 国能龙源环保南京有限公司 | Spray layer and desulfurizing tower |
-
2021
- 2021-07-16 CN CN202110807202.7A patent/CN113663501A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068971A (en) * | 1991-07-26 | 1993-02-17 | 巴布考克和威尔科斯公司 | The single spray level that is used for FGD system |
| US5620144A (en) * | 1995-02-10 | 1997-04-15 | The Babcock & Wilcox Company | Stacked interspacial spray header for FGD wet scrubber |
| KR20120140081A (en) * | 2011-06-20 | 2012-12-28 | 한국남부발전 주식회사 | Wet scrubber with multi-stage spray structure |
| JP2016055244A (en) * | 2014-09-09 | 2016-04-21 | 三菱日立パワーシステムズ株式会社 | Flue gas treatment apparatus |
| CN104857836A (en) * | 2015-05-12 | 2015-08-26 | 浙江天地环保工程有限公司 | Flue gas desulfurization absorber interactive spray system |
| CN212068329U (en) * | 2020-04-17 | 2020-12-04 | 上海龙净环保科技工程有限公司 | Wet flue gas desulfurization energy-saving control device |
| CN112604489A (en) * | 2020-12-07 | 2021-04-06 | 昆岳互联环境技术(江苏)有限公司 | Wet flue gas desulfurization device capable of adjusting operation parameters according to variable quantity |
| CN216703930U (en) * | 2021-07-16 | 2022-06-10 | 国能龙源环保南京有限公司 | Spray layer and desulfurizing tower |
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