CN113058409A - Spray head suitable for carbide slag flue gas desulfurization - Google Patents
Spray head suitable for carbide slag flue gas desulfurization Download PDFInfo
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- CN113058409A CN113058409A CN202110289324.1A CN202110289324A CN113058409A CN 113058409 A CN113058409 A CN 113058409A CN 202110289324 A CN202110289324 A CN 202110289324A CN 113058409 A CN113058409 A CN 113058409A
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- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- 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
- B01D53/346—Controlling the process
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- 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
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- 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
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- 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
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Abstract
The invention provides a spray header suitable for flue gas desulfurization of carbide slag. The spray head comprises a main channel and an outer channel arranged outside the main channel in a surrounding manner, wherein an inlet and a jet orifice are respectively arranged at two ends of the main channel, a rotational flow guide body, a contraction section, a throat pipe and a mixing suction inlet are sequentially arranged between the inlet and the jet orifice, the outer channel is provided with an inlet, the outer channel is communicated with the main channel through the mixing suction inlet, and fluids in the main channel and the outer channel are mixed at the mixing suction inlet and are sprayed out through the jet orifice. The spray header can fully utilize the characteristics of high solubility and high alkalinity of the carbide slag to form an alkaline slurry drop absorption area in the absorption section of the desulfurizing tower, thereby achieving the purposes of enhancing sulfur dioxide absorption, reducing liquid-gas ratio, saving energy consumption, improving desulfurizing efficiency and the like; meanwhile, the spray header does not influence the pH value of the desulfurization slurry in the desulfurization tower, so that the problems of scaling and blockage of calcium sulfate in the tower, slow oxidation of calcium sulfite and the like can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of flue gas desulfurization, in particular to a spray header suitable for carbide slag flue gas desulfurization.
Background
SO2Is one of main pollutants in coal-fired flue gas, and the wet desulphurization technology using lime or limestone as a desulfurizer is the most widely applied flue gas desulphurization method at present, and accounts for more than 80 percent of flue gas desulphurization. Limestone is a main desulfurizer of a wet desulphurization process, is derived from limestone mines, has wide application and huge demand, but the ecological environment is damaged due to the excessive exploitation of limestone, and the price of limestone is gradually increased under the condition of resource shortage.
The carbide slag belongs to alkaline solid waste and is low in price, and the main component of the carbide slag is calcium hydroxide, so that the carbide slag has the advantages of high solubility, high reaction speed, high desulfurization efficiency and the like, and can be used as a substitute desulfurizer for limestone for flue gas desulfurization of power plants. However, unlike a limestone desulfurizer, the pH value of the carbide slag slurry is very high, and the pH value of more than 5% of the carbide slag slurry can reach more than 12, so that the carbide slag slurry cannot be put into a desulfurization tower in a short time, otherwise, the pH value of the slurry in the desulfurization tower is greater than 7 or even higher for a long time, and the risk of hard scaling such as calcium sulfate formation inside the desulfurization tower, pipeline and spray nozzle is caused, and further the operation hidden trouble of the desulfurization tower is caused.
At present, in the industrial application of taking carbide slag as a desulfurizer, in order to prevent the pH value of slurry in a tower from being fluctuated violently when high-alkalinity carbide slag slurry enters the desulfurizing tower, the carbide slag slurry is usually added into the desulfurizing tower continuously according to the measurement, and is directly mixed with the desulfurizing slurry at the bottom in the tower, the pH value of the slurry in the tower is controlled to be kept between 5.0 and 6.5 all the time, the mixed slurry is sent into a circulating spray device, and a sulfur dioxide absorption area full of fine fog drops is formed in the tower through the atomization effect of a spray head. In this case, these droplets are weakly acidic conditions, i.e., pH 5.0 to 6.5, as in the circulating slurry in the column.
The research shows that: the pH value of the absorption slurry is positively correlated with the absorption efficiency of the sulfur dioxide, particularly when the pH value of the absorption solution is increased within the range of 6.0-9.0, the corresponding SO2The absorption efficiency can be increased significantly therewith. Therefore, the alkaline absorption liquid can improve the absorption rate of sulfur dioxide, and the desulfurizing tower can adopt a smaller liquid-gas ratio, so that the energy consumption is saved, the operation is more economic, and the method has obvious significance. Although the existing carbide slag slurry feeding method avoids the scaling problem inside a desulfurizing tower and in pipelines, the characteristics of high carbide slag solubility and high reaction activity cannot be fully utilized, and greater economic benefit is brought to a desulfurizing system.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a spray header suitable for flue gas desulfurization of carbide slag, which can fully utilize the characteristics of high solubility and high alkalinity of the carbide slag to form an alkaline slurry drop absorption area in an absorption section of a desulfurization tower, thereby achieving the purposes of enhancing sulfur dioxide absorption, reducing liquid-gas ratio, saving energy consumption, improving desulfurization efficiency and the like; meanwhile, the spray header does not influence the pH value of the desulfurization slurry in the desulfurization tower, so that the problems of scaling and blockage of calcium sulfate in the tower, slow oxidation of calcium sulfite and the like can be effectively avoided.
The invention provides a spray header suitable for flue gas desulfurization of carbide slag, which comprises a main channel and an outer channel arranged outside the main channel in a surrounding manner, wherein an inlet and a jet orifice are respectively arranged at two ends of the main channel, a rotational flow guide body, a contraction section, a throat pipe and a mixed suction inlet are sequentially arranged between the inlet and the jet orifice, the outer channel is provided with an inlet, the outer channel is communicated with the main channel through the mixed suction inlet, and fluids in the main channel and the outer channel are mixed at the mixed suction inlet and are sprayed out through the jet orifice.
Furthermore, the rotational flow guide body is two Archimedes spiral line type guide bodies which are symmetrical along the center.
Further, the inclination angle of the contraction section is 1-17 degrees.
Further, the throat diameter is 1/4 to 1/3 the diameter of the entrance of the main channel.
Further, the mixing suction inlet is arranged at the tail end of the throat pipe and is close to the jet opening, the mixing suction inlet comprises a plurality of openings which are spaced and evenly distributed on the circumferential direction of the main channel, and the plurality of openings are positioned on the same horizontal plane.
Further, the injection angle of the injection port is 60 to 170.
Further, when the diameter of the inlet of the main channel is less than or equal to 1 inch, the diameter of the inlet of the outer channel is equal to that of the inlet of the main channel; the outer channel inlet diameter is 4/5 to 1/3 the main channel inlet diameter when the main channel inlet diameter >1 inch.
Furthermore, the spray header also comprises a fixed support, and the outer channel is fixed outside the main channel through the fixed support.
Furthermore, a circulation port is arranged on the outer channel, and an inlet and the circulation port of the outer channel are respectively arranged on two opposite sides of the outer channel.
Further, the main channel and the outer channel are respectively connected with the respective fluid pipelines through a threaded connection, a flange connection or a welding mode.
The spray header is suitable for flue gas desulfurization of carbide slag, and is provided with the main channel and the outer channel which are mutually independent, so that circulating desulfurization slurry and fresh carbide slag slurry can independently circulate; meanwhile, the outer channel is communicated with the main channel at the mixing suction inlet, so that the fluids in the main channel and the outer channel are mixed at the mixing suction inlet and reach the jet orifice, and the mixed fluid is violently mixed and collided with the jet orifice and the jet zone to finally form alkaline slurry drops; meanwhile, due to the enhanced absorption effect of the alkaline slurry drops, the desulfurization efficiency of the desulfurization tower is improved, the liquid-gas ratio is reduced, and the desulfurization energy consumption is reduced, so that the advantages of high solubility, high reactivity and the like of the carbide slag are fully exerted, and the continuous and stable operation of the desulfurization tower is particularly facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a spray header suitable for flue gas desulfurization of carbide slag according to an embodiment of the present invention.
Description of reference numerals:
1: a main channel; 2: a swirling flow deflector; 3: an outer channel; 4: a contraction section; 5: fixing a bracket; 6: a mixing suction inlet; 7: an ejection port; 8: a throat; a: the diameter of the main channel inlet; b: outer channel entrance diameter; beta: the angle of inclination of the convergent section; θ: 1/2 for the spray angle.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, the spray header suitable for flue gas desulfurization of carbide slag in this embodiment includes a main channel 1 and an outer channel 3 surrounding the main channel 1, an inlet and a jet orifice 7 are respectively disposed at two ends of the main channel 1, a swirl flow guide body 2, a contraction section 4, a throat 8 and a mixing suction inlet 6 are sequentially disposed between the inlet and the jet orifice 7, the outer channel 3 is provided with an inlet, the outer channel 3 is communicated with the main channel 1 through the mixing suction inlet 6, and fluids in the main channel 1 and the outer channel 3 are mixed at the mixing suction inlet 6 and are ejected through the jet orifice 7.
In the present embodiment, the main passage 1 is mainly used for the circulation of a main fluid (i.e., circulating desulfurization slurry); it will be appreciated that the main passage 1 has an inlet for the main fluid to enter and an injection port 7 for the main fluid to be ejected, and that the inlet and injection port 7 may be disposed opposite to each other at the upper and lower ends of the main passage 1.
The outer channel 3 is mainly used for fresh carbide slag slurry to flow through; it can be understood that the outer channel 3 is a fluid channel which is arranged outside the main channel 1 in a closed mode, the fluid channel wraps the main channel 1 and forms a hollow sandwich structure with the main channel 1, and the hollow area is a carbide slag slurry flowing area. The outer channel 3 is provided with an inlet for carbide slag slurry to enter, but is not provided with an independent outlet, and is communicated with the main channel 1 through a mixing suction inlet 6, at the moment, the mixing suction inlet 6 is the outlet of the outer channel 3, and carbide slag slurry in the outer channel 3 enters a jet orifice 7 through the mixing suction inlet 6 to be mixed with the main fluid and then is ejected. The position of the inlet of the outer channel 3 is not strictly limited, and it may be arranged horizontally, for example, at a position opposite to the swirl flow guide 2 in the main channel 1.
In this embodiment, the relative position relationship between the main channel 1 and the outer channel 3 is not strictly limited, as long as two independent fluid channels can be formed, and the main channel 1 and the outer channel 3 may be coaxially disposed, for example, in which the main channel 1 is located at the center and the outer channel 3 is sandwiched outside the main channel 1. It will be appreciated that the lower end of the outer channel 3 is located below the mixing suction inlet 6, thereby facilitating the suction of fluid in the outer channel 3 through the mixing suction inlet 6; meanwhile, the lower end of the outer passage 3 should be positioned above the injection port 7 so as not to affect the fluid to be injected through the injection port 7.
In addition, the fixing mode between the outer channel 3 and the main channel 1 is not strictly limited, and the fixing mode which is conventional in the field can be adopted; for example, a fixing bracket 5 may be provided, in which case the outer channel 3 may be fixed outside the main channel 1 by the fixing bracket 5.
The rotational flow guide body 2, the contraction section 4 and the throat pipe 8 which are sequentially arranged between the inlet of the main channel 1 and the jet orifice 7 are mainly used for enabling the rotational flow and the contraction of the main fluid to generate high turbulence and improving the speed of the main fluid; when the speed of the main fluid reaches a certain numerical value, a negative pressure area can be formed in the rear area of the injection opening 7, the slurry in the outer channel 3 can be sucked into the mixing suction inlet 6 under the negative pressure action of the negative pressure area to form strong turbulence, the main fluid and the carbide slag slurry are rapidly mixed and sprayed out under the condition of high flow speed, and are collided, broken and atomized into fine slurry drops outside to finally form alkaline fog drops, at the moment, the absorption rate of sulfur dioxide is remarkably improved, the desulfurizing tower can adopt a smaller liquid-gas ratio, and the desulfurizing tower is particularly favorable for saving energy consumption and reducing the operation cost.
The speed of the main fluid at the mixing suction inlet 6 is not strictly limited as long as the negative pressure condition can be formed so as to be convenient for sucking the carbide slag slurry in the outer channel 3; the velocity of the primary fluid at the mixing intake 6 can be, for example, 15 to 35m/s, preferably 20 to 30 m/s.
The specific structures and related dimensional parameters of the swirl flow guide body 2, the contraction section 4 and the throat 8 in the main channel 1 are not strictly limited as long as the main fluid is favorable for generating high turbulence and improving the speed of the main fluid so as to form the negative pressure condition; specifically, the swirling flow deflector 2 may adopt two archimedes spiral-shaped flow deflectors which are symmetrical along the center, and the main fluid can generate a rotating flow field after passing through the archimedes spiral-shaped flow deflectors in the main channel 1; furthermore, the angle of inclination β of the constriction 4 can be 1 ° to 17 °, preferably 10 ° to 15 °; the diameter of the throat 8 may be from 1/4 to 1/3 of the main channel inlet diameter a.
In this embodiment, the mixing intake 6 may be located at the end of the throat 8 and immediately adjacent the jet orifice 7; the concrete structure of the mixed suction inlet 6 is not strict as long as the carbide slag slurry is convenient to suck and can be ensured to be mixed with the main fluid to form alkaline absorption liquid; specifically, the mixing suction inlet 6 may include a plurality of openings spaced apart and uniformly distributed in the circumferential direction of the main channel 1, and the plurality of openings may be located on the same horizontal plane, thereby facilitating the uniformity and stability of suction of the carbide slag slurry.
Further, the ejection angle 2 θ of the ejection port 7 is not strictly limited; the injection angle 2 θ of the injection ports 7 may be 60 ° to 170 °, for example, 60 °, 90 °, 120 °, 150 °, 170 °, etc., preferably 60 ° to 120 °.
In the present embodiment, the diameter a of the inlet of the main channel and the diameter b of the inlet of the outer channel are not strictly limited, as long as the main fluid is conveniently mixed with the carbide slag slurry to form the alkaline absorbent; specifically, when the diameter a of the inlet of the main channel is less than or equal to 1 inch, the diameter b of the inlet of the outer channel can be equal to the diameter a of the inlet of the main channel; when the main channel inlet diameter a >1 inch, the outer channel inlet diameter b may be 4/5 to 1/3 of the main channel inlet diameter a. Preferably, the outer channel entrance diameter b is 1-2.5 inches.
Furthermore, a circulation port can be arranged on the outer channel 3, and when a plurality of spray headers are arranged, the circulation port is convenient for fluid to circulate among the spray headers; the arrangement position of the circulation port is not strictly limited, and it may be arranged opposite to the inlet of the outer passage 3, and at this time, the inlet and the circulation port of the outer passage 3 are respectively arranged on the opposite sides of the outer passage 3.
The material of the main channel 1 and the outer channel 3 in the shower head is not limited, but includes, but is not limited to, alumina ceramics, silicon carbide, organic polymer materials such as ultra-high molecular weight vinyl chloride, stainless steel materials such as 304, 316L, and cobalt alloy materials. In addition, the main channel 1, the outer channel 3 and the swirling flow guiding body 2 may be made of the same or different materials.
Further, the main channel 1 and the outer channel 3 can be respectively connected with the respective fluid pipelines through a threaded connection, a flange connection or a welding manner; more specifically, the main channel 1 may be screwed to its corresponding fluid line, in which case the inlet of the main channel 1 may be threaded, while the outer channel 3 may be flanged to its corresponding fluid line.
When the spray header of the embodiment is applied to a spray layer, a plurality of spray headers can be arranged in parallel, and the distance between every two adjacent spray headers is not more than 2tan theta; the working pressure of the spray header can be 0.02-0.7Mpa, the flow velocity of the fluid at the throat 8 can be 15-35m/s, the volume flow mixing ratio between the fluid of the main channel 1 and the fluid of the outer channel 3 can be 1/30-1/120, preferably 1/50-1/100, and the spray pattern of the spray header is solid cone.
The working principle of the spray header of the embodiment is as follows: two fluids respectively enter from inlets of a main channel 1 and an outer channel 3, the fluid in the main channel 1 generates high turbulence through the rotational flow and contraction action of a rotational flow guide body 2 and a contraction section 4, meanwhile, the fluid speed is improved, when the fluid is sprayed out from the tail end of a throat pipe 8 at the speed of 15-35m/s, a negative pressure area is formed in the rear area of a spray opening 7, carbide slag slurry in the outer channel 3 is sucked in and forms strong turbulence by means of the negative pressure action, the carbide slag slurry is rapidly mixed and sprayed out under the conditions of the strong turbulence and high flow rate, collision and crushing are carried out outside, the carbide slag slurry is atomized into fine slurry drops, and finally alkaline mist drop spraying is formed, so that the desulfurization efficiency of a desulfurization tower is improved, the purposes of reducing the liquid-gas ratio, saving energy consumption and the like.
Compared with the prior art, the spray header of the embodiment has at least the following advantages:
1. the spray header of the embodiment can enable the circulating desulfurization slurry and the fresh carbide slag slurry to independently reach the injection port 7, and the circulating desulfurization slurry and the fresh carbide slag slurry are intensively mixed and collided in the injection port 7 and the injection area to finally form alkaline slurry drops; the spray header utilizes high jet velocity and double fluids to form external space mixing, eliminates adverse factors such as alkaline scaling on the wall of the spray header, and avoids the problems of scaling in a tower and the like formed after circulating desulfurization slurry meets high-alkaline carbide slag slurry.
2. Compared with the existing vortex desulfurization nozzle, the spray header of the embodiment is provided with two independent fluid channels, so that two different slurries can be supplied respectively, and the high mixing of the two slurries in the injection area is realized; meanwhile, the proportion of the carbide slag slurry and the tower internal circulation desulfurization slurry can be adjusted by respectively controlling the flow rates of the two slurries so as to change the alkalinity of slurry drops, so that the pH value of the mixed slurry is in the optimal range suitable for desulfurization, and the absorption efficiency of sulfur dioxide is improved.
3. When the spray header of the embodiment is applied to a desulfurization spray layer, an absorption area which covers the section and the height space of a desulfurization tower and is composed of alkaline slurry drops can be constructed at the absorption section of the desulfurization tower, and the desulfurization efficiency of the desulfurization tower is improved, the liquid-gas ratio is reduced, and the desulfurization energy consumption is reduced due to the enhanced absorption effect of the alkaline slurry drops, so that the advantages of high solubility, high reactivity and the like of carbide slag are fully exerted; meanwhile, the desulfurization slurry at the bottom of the desulfurization tower still keeps the pH value within the range of 5.0-6.5 and is not influenced, so that the problems of alkaline scaling, slow oxidation of calcium sulfite and the like in the tower are avoided, and the continuous and stable operation of the desulfurization tower is facilitated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a shower head suitable for carbide slag flue gas desulfurization, its characterized in that includes the main entrance and encloses the outer passageway of establishing in the main entrance outside, is equipped with import and jet respectively at the both ends of main entrance, is equipped with whirl baffle, contraction section, choke and mixed sunction inlet between import and jet in proper order, is equipped with the import on the outer passageway, and the outer passageway is through mixing sunction inlet and main entrance intercommunication, and the fluid in main entrance and the outer passageway mixes and spouts through the jet in mixing the sunction inlet.
2. The showerhead of claim 1 wherein the swirl flow conductor is two centrosymmetric archimedes spiral flow conductors.
3. The showerhead of claim 1, wherein the angle of inclination of the convergent section is from 1 ° to 17 °.
4. The showerhead of claim 1 wherein the throat diameter is 1/4 to 1/3 of the diameter of the main channel entrance.
5. The showerhead of claim 1, wherein the mixing intake is disposed at an end of the throat and proximate the injection ports, the mixing intake comprising a plurality of openings spaced apart and evenly distributed about a circumference of the main channel, the plurality of openings being located on a common horizontal plane.
6. The showerhead of claim 1 wherein the spray angle of the spray ports is 60 ° to 170 °.
7. The showerhead of claim 1, wherein the outer channel inlet diameter is equal to the main channel inlet diameter when the main channel inlet diameter is ≤ 1 inch; the outer channel inlet diameter is 4/5 to 1/3 the main channel inlet diameter when the main channel inlet diameter >1 inch.
8. The showerhead of claim 1, further comprising a mounting bracket, the outer passage being secured to the exterior of the main passage by the mounting bracket.
9. The showerhead of claim 1, further comprising a flow port in the outer channel, the inlet and the flow port of the outer channel being disposed on opposite sides of the outer channel.
10. The showerhead of claim 1, wherein the main and outer passages are each connected to the respective fluid conduit by a threaded connection, a flanged connection, or a welded connection.
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| CN202110289324.1A CN113058409B (en) | 2021-03-18 | 2021-03-18 | Spray head suitable for carbide slag flue gas desulfurization |
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| CN102954047A (en) * | 2011-08-31 | 2013-03-06 | 韩铁夫 | Injection mixer |
| CN102357336A (en) * | 2011-10-14 | 2012-02-22 | 华南理工大学 | Adjusting type venturi tube double-layer structure atomizing nozzle |
| CN106694268A (en) * | 2017-02-08 | 2017-05-24 | 安徽鹰龙工业设计有限公司 | Liquid-magnetization-based high-concentration gas-liquid two-phase mixed atomizer |
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