CN107537307B - Desulfurization spray gun - Google Patents
Desulfurization spray gun Download PDFInfo
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- CN107537307B CN107537307B CN201610470935.5A CN201610470935A CN107537307B CN 107537307 B CN107537307 B CN 107537307B CN 201610470935 A CN201610470935 A CN 201610470935A CN 107537307 B CN107537307 B CN 107537307B
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Abstract
The invention discloses a desulfurization spray gun, which comprises: a desulfurizing spray gun rod, an inner cavity of the desulfurizing spray gun rod, a pneumatic spray gun rod, a desulfurizing nozzle and a water inlet; the pneumatic spray gun rod and the desulfurization nozzle are respectively communicated with the inner cavity of the desulfurization spray gun rod; the inner cavity of the desulfurization spray gun rod is internally provided with a pneumatic spray head which is fixedly connected and communicated with the pneumatic spray gun rod, the pneumatic spray head comprises an air nozzle, an air nozzle cavity is arranged in the air nozzle, and a vibrator and a spring sleeved on the vibrator are arranged in the air nozzle cavity; the desulfurization nozzle comprises a desulfurization nozzle body, wherein the inside of the desulfurization nozzle body is provided with a desulfurization nozzle body inner cavity, a blade group is arranged in the desulfurization nozzle body inner cavity, the desulfurization nozzle body inner cavity is communicated with the inner cavity of a desulfurization spray gun rod, one end of the desulfurization nozzle body is fixedly connected with the desulfurization spray gun rod, and the other end of the desulfurization nozzle body is provided with a nozzle; the water inlet is communicated with the inner cavity of the gun rod of the desulfurization spray gun. The desulfurization spray gun provided by the invention effectively improves desulfurization efficiency.
Description
Technical Field
The invention relates to the technical field of desulfurization equipment, in particular to a desulfurization spray gun.
Background
Along with the rapid development of economy and the great increase of total energy consumption, SO (sulfur dioxide) discharged by industrial flue gas 2 The atmospheric pollution problem is becoming more serious. SO (SO) 2 The atmospheric pollution not only damages the growth of animals and plants and damages the ozone layer, but also causes the problems of acid rain, greenhouse effect and the like. Thus, desulfurization of industrial flue gas is SO control 2 An effective means of contamination.
Limestone-gypsum wet desulfurization technology is commonly adopted for industrial flue gas desulfurization, and the principle is as follows: introducing tail flue gas into a wet flue gas desulfurization tower, pressurizing limestone slurry in a slurry pool at the bottom of the desulfurization tower by using a slurry circulating water pump, delivering the pressurized limestone slurry to a spraying layer in the middle of the desulfurization tower, uniformly spraying the slurry into a flue gas flow field, flushing the flue gas entering the desulfurization tower, and removing SO (sulfur dioxide) in the flue gas 2 The main reaction with the limestone slurry: SO (SO) 2 +CaCO 3 →CaSO 3 +CO 2 Thereby bringing SO 2 The flue gas is removed from the flue gas, the desulfurized flue gas is discharged out of the desulfurizing tower through a demister, and the spray slurry falls into a slurry pool at the bottom of the desulfurizing tower.
At present, three spraying layers are usually arranged in a desulfurization tower, each layer is provided with a plurality of large-flow hollow cone desulfurization nozzles, and lime slurry passes through the nozzles to form atomized liquid drops with average particle diameters of about 1500-3000 microns. Lime slurry passing through the hollow cone desulfurization nozzle forms dense gypsum rain in the desulfurization tower, gypsum slurry drops and SO in flue gas 2 Is absorbed to achieve the purpose of desulfurization. Gypsum slurry drop and SO in flue gas 2 The more the contact area, the longer the residence time, and the better the desulfurization effect. But the fog drop generated by the hollow cone desulfurization nozzle has larger particle size and is easy to cause SO in the desulfurization tower 2 The escape of gas leads to 80-85% of desulfurization efficiency, and the desulfurization efficiency can not reach the national standard. However, according to the conditions of the prior desulfurization process and desulfurization equipment, the number of spraying layers and the height of a desulfurization tower are required to be increased to improve the desulfurization efficiency, so that the technical cost is high, the operation cost is high, the construction period is long, and the desulfurization process is not easy to realize.
Disclosure of Invention
The invention aims to provide a desulfurization spray gun for improving desulfurization efficiency.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a desulfurization spray gun, which comprises: the desulfurization spray gun comprises a desulfurization spray gun rod, wherein an inner cavity is formed in the desulfurization spray gun rod, one end of the desulfurization spray gun rod is provided with a pneumatic spray gun rod, and the other end of the desulfurization spray gun rod is provided with a desulfurization nozzle; the pneumatic spray gun rod and the desulfurization nozzle are respectively communicated with the inner cavity of the desulfurization spray gun rod;
the inner cavity of the desulfurization spray gun rod is provided with a pneumatic spray head which is fixedly connected and communicated with the pneumatic spray gun rod, the pneumatic spray head comprises an air nozzle, an air nozzle cavity is arranged in the air nozzle, and a vibrator and a spring sleeved on the vibrator are arranged in the air nozzle cavity;
the desulfurization nozzle comprises a desulfurization nozzle body, wherein a desulfurization nozzle body inner cavity is formed in the desulfurization nozzle body, a blade group is arranged in the desulfurization nozzle body inner cavity, the desulfurization nozzle body inner cavity is communicated with the inner cavity of the desulfurization spray gun rod, one end of the desulfurization nozzle body is fixedly connected with the desulfurization spray gun rod, a nozzle is arranged at the other end of the desulfurization nozzle body, and the central axis of the nozzle and the central axis of the blade group are in the same straight line;
the side of the desulfurization spray gun rod is provided with a water inlet which is communicated with the inner cavity of the desulfurization spray gun rod, and the water inlet is arranged at one end of the desulfurization spray gun rod, which is close to the pneumatic spray gun rod.
Preferably, in the desulfurization spray gun, the inner diameter of the nozzle is smaller than the inner diameter of the inner cavity of the desulfurization spray nozzle body.
Preferably, in the desulfurization spray gun, the pneumatic spray head further comprises an air nozzle connecting seat, the air nozzle is connected with the pneumatic spray gun rod through the air nozzle connecting seat, a communication cavity is formed in the air nozzle connecting seat and is communicated with the pneumatic spray gun rod and the air nozzle, a round table is arranged at one end of the vibrator, and the round table is arranged at one end of the vibrator, which is close to the air nozzle connecting seat.
Preferably, in the desulfurization spray gun, the communicating cavity comprises a connecting cavity and a conical cavity, the conical cavity is matched with the round table, the conical cavity is communicated with the air nozzle, the connecting cavity is communicated with the pneumatic spray gun rod and the conical cavity, and the inner diameter of the connecting cavity is smaller than that of the conical cavity.
Preferably, in the desulfurization spray gun, the desulfurization spray gun rod and the pneumatic spray gun rod are fixed through a compression nut, the central axis of the compression nut and the central axis of the nozzle are on the same straight line, and a rubber gasket is arranged at the joint of the compression nut and the desulfurization spray gun rod.
Preferably, in the above desulfurization spray gun, a desulfurization nozzle joint is disposed at a joint of the desulfurization spray gun rod and the desulfurization nozzle, and the desulfurization spray gun rod and the desulfurization nozzle are fixedly connected through the desulfurization nozzle joint.
Preferably, in the desulfurization spray gun, the desulfurization spray nozzle body and the blade group are made of 2205 duplex stainless steel, C276 alloy steel or silicon carbide.
Preferably, in the desulfurization spray gun, the air nozzle connecting seat is in threaded connection with the air nozzle, and a rubber sealing ring is arranged at the threaded connection position.
Preferably, in the desulfurization spray gun, the desulfurization spray gun rod, the pneumatic spray gun rod, the desulfurization spray nozzle body and the air spray nozzle are all cylindrical bodies.
According to the desulfurization spray gun provided by the invention, compressed air and lime slurry respectively enter the desulfurization spray gun rod through the pneumatic spray gun rod and the water inlet, the compressed air enters the air nozzle through the pneumatic spray gun rod, the air nozzle enters the inner cavity of the desulfurization spray gun rod, the lime slurry enters the inner cavity of the desulfurization spray gun rod through the water inlet, the compressed air and the lime slurry are mixed in the inner cavity of the desulfurization spray gun rod, the mixed compressed air and lime slurry form tiny bubbles in the inner cavity of the desulfurization spray gun rod, the bubbles are sprayed out of the desulfurization spray gun rod through the desulfurization spray nozzle, the lime slurry sprayed out of the desulfurization spray nozzle forms lime slurry mist drops with smaller particle size under the action of the bubbles, the lime slurry mist drops undergo desulfurization reaction, and SO in gas to be desulfurized is absorbed 2 。
When compressed air enters the air nozzle from the gun rod of the pneumatic spray gun, the vibrator is pushed in the cavity of the air nozzle, the vibrator generates reciprocating motion under the action of the compressed air and the spring, vibration and sound waves are generated in the reciprocating motion process, and the volume of bubbles generated by mixing the compressed air and lime slurry is smaller under the action of the vibration and the sound waves, so that the total surface area of the bubbles is increased. And set up the blade group in desulfurization nozzle body inner chamber, the lime thick liquid that mixes the tiny bubble gets into desulfurization nozzle body inner chamber and the blade of blade group bumps, makes bubble and lime thick liquid mixed more even. The lime slurry is atomized for the first time after being sprayed out of the desulfurization nozzle, air bubbles mixed in the atomized lime slurry explode after being sprayed out of the desulfurization nozzle, so that the lime slurry is atomized for the second time, the diameter of liquid drops of the lime slurry atomized for the second time is thinned to 300 microns, and the desulfurization effect of the lime slurry is improved.
The desulfurization spray gun is arranged below the spray layer, SO that a layer of fine lime slurry fog drop area is formed below the desulfurization tower, and SO is greatly increased 2 The contact area with lime slurry and the reaction time can improve the desulfurization efficiency to more than 97%, and can meet the national regulation requirement. The desulfurization spray gun provided by the invention is convenient to install, low in transformation cost and good in use space.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a cross-sectional view of a desulfurizing lance provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a pneumatic nozzle according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view showing the structure of a desulfurization nozzle provided in an embodiment of the present invention;
FIG. 4 is a side view of a desulfurization nozzle provided in an embodiment of the present invention.
Wherein:
the device comprises a 1-pneumatic spray gun rod, a 2-compression nut, a 3-rubber gasket, a 4-water inlet, a 5-desulfurization spray gun rod, a 6-pneumatic spray nozzle, a 601-air nozzle connecting seat, a 602-rubber sealing ring, a 603-air nozzle, a 604-vibrator, a 605-spring, a 7-desulfurization nozzle connector, an 8-desulfurization nozzle, a 801-blade group, an 802-desulfurization nozzle body and 803-nozzle.
Detailed Description
The desulfurization spray gun provided by the embodiment of the invention effectively improves the desulfurization efficiency.
In order to better understand the technical solution in the embodiments of the present invention and make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solution in the embodiments of the present invention is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the basic structure of a desulfurization nozzle provided by an embodiment of the present invention is shown, which mainly comprises a pneumatic spray gun rod 1, a water inlet 4, a desulfurization spray gun rod 5, a pneumatic spray head 6 and a desulfurization nozzle 8. Wherein:
the desulfurization spray gun rod 5 is a matrix of the desulfurization spray nozzle provided by the embodiment of the invention, an inner cavity is arranged in the desulfurization spray gun rod 5, and the inner cavity of the desulfurization spray gun rod 5 is used for mixing compressed air and lime slurry. One end of the desulfurization spray gun rod 5 is provided with a pneumatic spray gun rod 1, the other end of the desulfurization spray gun rod 5 is provided with a desulfurization spray nozzle 8, one end of the pneumatic spray gun rod 1 is positioned outside the desulfurization spray gun rod 5, the other end of the pneumatic spray gun rod is positioned in the inner cavity of the desulfurization spray gun rod 5, the pneumatic spray gun rod 1 and the desulfurization spray nozzle 8 are respectively communicated with the inner cavity of the desulfurization spray gun rod 5, and the desulfurization spray gun rod 5 is connected with a compressed air supply device and is used for introducing compressed air into the inner cavity of the desulfurization spray gun rod 5; the side of the desulfurization spray gun rod 5 is provided with a water inlet 4, the water inlet 4 is communicated with the inner cavity of the desulfurization spray gun rod 5, and the water inlet 4 is communicated with a lime slurry conveying pump for introducing lime slurry into the inner cavity of the desulfurization spray gun rod 5. The pneumatic spray head 6 is arranged in the inner cavity of the desulfurization spray gun rod 5, the pneumatic spray head 6 is arranged at one end of the pneumatic spray gun rod 1, which is positioned in the inner cavity of the desulfurization spray gun rod 5, the pneumatic spray head 6 is fixedly connected and communicated with the desulfurization spray gun rod 5, preferably, the pneumatic spray head 6 is in threaded connection with the pneumatic spray gun rod 1, and compressed air introduced by the pneumatic spray gun rod 1 is fed into the inner cavity of the desulfurization spray gun rod 5 through the pneumatic spray head 6.
Referring to fig. 2, the basic structure of the air nozzle 6 in the embodiment of the present invention is shown, which mainly includes an air nozzle 603, wherein an air nozzle cavity is disposed inside the air nozzle 603, and a vibrator 604 and a spring 605 sleeved on the vibrator 604 are disposed in the air nozzle cavity. Vibrator 604 generates vibrations and sound waves by compressed air and spring 605.
Referring to fig. 3 and 4, the basic structure of a desulfurization nozzle 8 in an embodiment of the present invention is shown, which mainly includes a desulfurization nozzle body 802, a desulfurization nozzle body cavity is disposed in the desulfurization nozzle body 802, a blade group 801 is disposed in the desulfurization nozzle body cavity, the desulfurization nozzle body cavity is communicated with the cavity of a desulfurization spray gun rod 5, one end of the desulfurization nozzle body 802 is fixedly connected with the desulfurization spray gun rod 5, and a nozzle 803 is disposed at the other end of the desulfurization nozzle body 802. The central axis of the nozzle 803 is in line with the central axis of the blade set 801. The desulfurization nozzle body 802 is used for discharging compressed air and lime slurry after mixing from the desulfurization spray gun shaft 5, is used for desulfurization of air in the desulfurization tower, the blade set 801 enables the compressed air and the lime slurry to be mixed more uniformly, the nozzle 803 is a spraying port of the compressed air and the lime slurry after mixing, and is a discharging port of the desulfurization spray gun shaft 5.
The structural shapes of the desulfurizing spray gun bar 5, the pneumatic spray gun bar 1, the desulfurizing nozzle body 802 and the air nozzle 503 can be arbitrarily selected according to the need, and the present invention is preferably cylindrical for the convenience of manufacture and use.
Because the desulfurization spray gun provided by the embodiment of the invention is mainly used for spraying lime slurry, the lime slurry contains a large amount of limestone particles, and the outer surface of the spray nozzle is washed by gypsum rain sprayed by the upper spray layer, and the movable spray gun rod 1, the desulfurization spray gun rod 5, the pneumatic spray nozzle 6 and the desulfurization spray nozzle 8 are all made of special wear-resistant and corrosion-resistant materials such as titanium alloy and low-carbon alloy steel, and 2205 duplex stainless steel, C276 alloy steel or silicon carbide is preferable in the invention. The nozzle body 802 and the blade set 801 need to bear high-speed lime slurry, and in order to ensure the service life of the desulfurization spray gun, the manufacturing materials of the nozzle body 802 and the blade set 801 are preferably 2205 duplex stainless steel, C276 alloy steel or special wear-resistant and corrosion-resistant materials such as silicon carbide and the like.
In the using process of the desulfurization spray gun provided by the invention, compressed air and lime slurry respectively enter the desulfurization spray gun rod 5 through the pneumatic spray gun rod 1 and the water inlet 4, the compressed air enters the air nozzle 603 through the pneumatic spray gun rod 1 and then enters the inner cavity of the desulfurization spray gun rod 5 through the air nozzle 603, and the lime slurry enters the inner cavity of the desulfurization spray gun rod 5Liquid enters the inner cavity of the desulfurization spray gun rod 5 through the water inlet 4, compressed air and lime slurry are mixed in the inner cavity of the desulfurization spray gun rod 5, the mixed compressed air and lime slurry form tiny bubbles in the inner cavity of the desulfurization spray gun rod 5, the bubbles are sprayed out of the desulfurization spray gun rod 5 through the desulfurization nozzle 8, lime slurry sprayed out of the desulfurization nozzle 8 forms lime slurry mist drops with smaller particle size under the action of the bubbles, the lime slurry mist drops perform desulfurization reaction, and SO in gas to be desulfurized is absorbed 2 。
When compressed air enters the air nozzle 603 from the pneumatic spray gun rod 1, the vibrator 604 is pushed in the cavity of the air nozzle, the vibrator 604 generates reciprocating motion under the action of the compressed air and the spring 605, vibration and sound waves are generated in the reciprocating motion process, and the volume of bubbles generated by mixing the compressed air and lime slurry is smaller under the action of the vibration and the sound waves, so that the total surface area of the bubbles is increased. And set up blade group 801 in desulfurization nozzle body inner chamber, the lime thick liquid that mixes the tiny bubble gets into desulfurization nozzle body inner chamber and collides with the blade of blade group 801, makes bubble and lime thick liquid mixed more even. The lime slurry is atomized for the first time after being sprayed out of the desulfurization nozzle 8, air bubbles mixed in the atomized lime slurry are exploded after being sprayed out of the desulfurization nozzle 8, SO that the lime slurry is atomized for the second time, the diameter of liquid drops of the lime slurry which are atomized for the second time is thinned to 300 microns, and compared with the existing nozzle which forms atomized liquid drops with the average particle diameter of about 1500-3000 microns, the atomized liquid drops with the size of 300 microns are increased in SO (sulfur oxide) 2 The contact area and the reaction time between the flue gas and the fog drops are more beneficial to SO in the flue gas 2 Is beneficial to improving the desulfurization effect of lime slurry.
The desulfurization spray gun is arranged below the spray layer, SO that a layer of fine lime slurry fog drop area is formed below the desulfurization tower, and SO is greatly increased 2 The contact area with lime slurry and the reaction time can improve the desulfurization efficiency to more than 97%, and can meet the national regulation requirement. The desulfurization spray gun provided by the invention is convenient to install, low in transformation cost and good in use space.
Taking a 22t/h coal-fired boiler as an example, three spraying layers are arranged in the existing desulfurizing tower for desulfurizing the flue gas, the power of a slurry circulating pump of each of the three spraying layers is 220kw, 200kw and 185kw respectively, and if the number of the spraying layers is increased by 2, the power of a slurry circulating water pump is increased by 400kw at least, so that the higher running cost is brought, and the desulfurizing tower is not applicable. By applying the desulfurization spray gun provided by the invention, the existing desulfurization tower is not required to be changed, only a layer of 6 desulfurization spray guns are required to be arranged at the lower part of the desulfurization tower, the spray flow of each slurry is 60-80t/h, the power of a slurry circulating pump is only 75kw, and the total consumption of compressed air of the 6 desulfurization spray guns is 2m 3 And/min, the power of the air compressor is 15kw, and the total power of the air compressor is 90kw after transformation. The sulfur removal efficiency can reach 98%, so the scheme has the advantages of low reconstruction cost, short construction period, high sulfur removal efficiency after reconstruction, low operation cost and the like.
Generally, the blades of the blade set 801 are provided with grooves, lime slurry mixed with bubbles enters the grooves and collides with the blades, so that the micro bubbles are more uniformly mixed with the lime slurry, the liquid flow is promoted to differentiate, the liquid is diffused circumferentially after colliding and flows to the inner cavity of the desulfurization nozzle body along the outer edge of the blade set 801, the lime slurry flow is entrained with the bubbles to start rotating, and the lime slurry flow is sprayed out from the nozzle 803 according to a certain centrifugal angle. The sprayed lime slurry is high in hydraulic pressure and speed, so that lime slurry mist drops can cover a larger range, and the inner diameter of the nozzle 803 is smaller than the inner diameter of the inner cavity of the desulfurization nozzle body for further optimizing the technical scheme.
In order to further optimize the technical scheme, in the desulfurization spray gun provided by the embodiment of the invention, the pneumatic spray head 6 further comprises an air nozzle connecting seat 601, the air nozzle 603 is connected with the pneumatic spray gun rod 1 through the air nozzle connecting seat 601, a communication cavity is arranged in the air nozzle connecting seat 601, the pneumatic spray gun rod 1 is communicated with the air nozzle 603 through the communication cavity, preferably, the air nozzle connecting seat 601 is in threaded connection with the pneumatic spray gun rod 1 and the air nozzle 603, the threaded connection is convenient for the installation and the disassembly of the pneumatic spray gun rod 1 and the air nozzle 603, and a rubber sealing ring 602 is arranged at the joint of the air nozzle connecting seat 601 and the air nozzle 603. The vibrator 604 is helpful to refine bubbles generated by mixing compressed air and lime slurry in the inner cavity of the gun rod 1 of the desulfurization spray gun, and in order to ensure good use effect, one end of the vibrator 604 adopted in the embodiment of the invention is provided with the round table, and the round table is arranged at one end of the vibrator 604 close to the air nozzle connecting seat 601, compressed air entering the air nozzle 603 firstly contacts the round table of the vibrator 604, so that the stress area is increased, the vibration frequency is increased, and the refinement of the bubbles is more helpful.
For the use of more convenient oscillator 604, the round platform of cooperation oscillator 604 uses more, sets up the circular cone chamber on the intercommunication chamber of air nozzle connecting seat 601, the circular cone chamber with the round platform cooperatees, and sets up the connecting chamber in the front end in circular cone chamber, connecting chamber intercommunication pneumatic spray gun stock 1 and circular cone chamber, the internal diameter of connecting chamber is less than the internal diameter in circular cone chamber. Compressed air enters the communication cavity of the air nozzle connecting seat 601 from the pneumatic spray gun rod 1, the compressed air firstly passes through the connecting cavity in the communication cavity, and enters the conical cavity through the connecting cavity, the compressed air in the conical cavity pushes the vibrator 604, and the spring 605 is compressed. Since the contact surface between the vibrator 604 and the air nozzle connecting seat 601 is a conical surface, when the vibrator 604 is pushed, a gap is generated between the vibrator 604 and the conical cavity of the air nozzle connecting seat 601, and compressed air enters the air nozzle cavity through the gap and is ejected from the air nozzle 603. When the volume formed by the gap generated between the vibrator 604 and the conical cavity of the air nozzle connecting seat 601 is equal to the volume of the air inlet of the connecting cavity, the compressed air entering the air nozzle cavity is totally ejected, the air pressure difference of the air nozzle cavity is reduced to be close to zero, at this time, the vibrator 604 moves reversely under the action of the spring 605, so that the round table surface of the vibrator 604 contacts with the conical surface of the conical cavity of the air nozzle connecting seat 601 again, the vibrator 604 moves forwards again under the action of the compressed air, and the secondary air injection is started, so that intermittent air injection is generated. Preferably, the air nozzle 6 generates intermittent air jet of 50-60 hz, so that the circular table surface of the vibrator 604 and the conical surface of the conical cavity of the air nozzle connecting seat 601 collide continuously and rapidly, and vibration and sound waves with the same frequency are generated.
When intermittent air injection enters the liquid flow in the desulfurizing spray gun rod 5, the pressure of compressed air is higher than the pressure of the liquid, the sprayed gas forms tiny bubbles under the resistance of the liquid, meanwhile, the vibration and sound waves generated by the pneumatic spray head 6 promote the bubbles to be more tiny, and the pneumatic spray head 6 and the desulfurizing nozzle 8 keep a proper distance so as to ensure that the particle size of the bubbles to be basically consistent and are more uniformly distributed in the liquid flow, so that better atomization is promoted when the liquid flow is sprayed out from the desulfurizing nozzle. The vibration generated by the pneumatic jet 6, together with the sound wave, promotes better atomization of the liquid flow at the time of ejection.
In the embodiment of the invention, a desulfurization spray gun rod 5 and a pneumatic spray gun rod 1 are fixed through a compression nut 2, a through hole is arranged in the center of the compression nut 2, the through hole is in interference fit with the pneumatic spray gun rod 1, the compression nut 2 is connected with the desulfurization spray gun rod 5 through threads, in order to ensure the tightness of the desulfurization spray gun rod 5, a rubber gasket 3 is arranged at the threaded connection part of the compression nut 2 and the desulfurization spray gun rod 5, and the rubber gasket 3 is compressed by the compression nut 2. Preferably, the central axis of the compression nut 2 is collinear with the central axis of the spout 803.
The gun rod 5 of the desulfurization spray gun is connected with the desulfurization spray nozzle 8 through threads. Preferably, a desulfurization nozzle joint 6 is arranged at the joint of the desulfurization spray gun rod 5 and the desulfurization nozzle 8, and the desulfurization nozzle joint 6 is fixedly connected with the desulfurization spray gun rod 5 and the desulfurization nozzle body 802 respectively. For example, the two ends of the inner wall of the desulfurization nozzle joint 6 are respectively provided with internal threads, and the desulfurization nozzle joint 6 is respectively in threaded connection with the desulfurization spray gun rod 5 and the desulfurization nozzle body 802, so that the desulfurization nozzle 8 is convenient to replace.
The design pressure of the liquid of the desulfurization spray gun provided by the invention is 0.15MPa, and the flow is 40-120 m 3 And/h, the gas consumption is 16-54 Nm 3 And (3) the performance of the spray gun is greatly improved compared with that of other spray guns. FM spray gun commonly used at home and abroad at present, the liquid pressure is 0.3MPa, and the flow is 5m 3 At/h, the gas consumption is 100-120 Nm 3 And/h, the gas-liquid volume ratio of the liquid atomization is 20:1, and the gas-liquid volume ratio of the spray gun liquid atomization is 1:2.2- -1:2.5. the gas consumption is only 1/40-1/50 of that of the FM spray gun, and the energy consumption is greatly reduced. The desulfurization spray gun provided by the invention has different specification types, and is according to actual practiceIs selected to be of a suitable specification.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The embodiments of the present invention described above do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. A desulfurization lance, comprising: the desulfurization spray gun comprises a desulfurization spray gun rod, wherein an inner cavity is formed in the desulfurization spray gun rod, one end of the desulfurization spray gun rod is provided with a pneumatic spray gun rod, and the other end of the desulfurization spray gun rod is provided with a desulfurization nozzle; the pneumatic spray gun rod and the desulfurization nozzle are respectively communicated with the inner cavity of the desulfurization spray gun rod;
the internal cavity of the desulfurization spray gun rod is provided with a pneumatic spray head which is fixedly connected and communicated with the pneumatic spray gun rod, the pneumatic spray head comprises an air nozzle and an air nozzle connecting seat, an air nozzle cavity is arranged in the air nozzle, and a vibrator and a spring sleeved on the vibrator are arranged in the air nozzle cavity;
the desulfurization nozzle comprises a desulfurization nozzle body, wherein a desulfurization nozzle body inner cavity is formed in the desulfurization nozzle body, a blade group is arranged in the desulfurization nozzle body inner cavity, the desulfurization nozzle body inner cavity is communicated with the inner cavity of the desulfurization spray gun rod, one end of the desulfurization nozzle body is fixedly connected with the desulfurization spray gun rod, a nozzle is arranged at the other end of the desulfurization nozzle body, and the central axis of the nozzle and the central axis of the blade group are in the same straight line;
the side surface of the desulfurization spray gun rod is provided with a water inlet which is communicated with the inner cavity of the desulfurization spray gun rod, and the water inlet is arranged at one end of the desulfurization spray gun rod, which is close to the pneumatic spray gun rod;
the air nozzle connecting seat is connected with the air nozzle and the pneumatic spray gun rod, a communication cavity is arranged in the air nozzle connecting seat and is communicated with the pneumatic spray gun rod and the air nozzle, one end of the vibrator is provided with a round table, and the round table is arranged at one end of the vibrator, which is close to the air nozzle connecting seat;
the communication cavity comprises a connecting cavity and a conical cavity, the conical cavity is matched with the round table, the conical cavity is communicated with the air nozzle, the connecting cavity is communicated with the pneumatic spray gun rod and the conical cavity, and the inner diameter of the connecting cavity is smaller than that of the conical cavity;
compressed air enters the communication cavity from the pneumatic spray gun rod, the compressed air enters the conical cavity through the connecting cavity, the vibrator is pushed in the conical cavity and the spring is compressed, so that a gap is formed between the vibrator and the conical cavity, and the compressed air enters the air nozzle from the gap and is sprayed out from the air nozzle; when the volume of the gap is equal to the volume of air inlet of the connecting cavity, compressed air entering the air nozzle is sprayed out, the air pressure in the air nozzle is reduced, the spring enables the vibrator to move reversely, the round table is enabled to be in contact with the conical surface of the conical cavity of the air nozzle connecting seat again, and the vibrator moves again under the action of compressed air so as to continue spraying air; the end face of the round table collides with the conical surface of the conical cavity of the air nozzle connecting seat rapidly to generate vibration and sound waves.
2. The desulfurization spray gun of claim 1, wherein the inner diameter of the spout is smaller than the inner diameter of the desulfurization spray nozzle body lumen.
3. The desulfurization spray gun according to claim 1, wherein the desulfurization spray gun rod and the pneumatic spray gun rod are fixed through a compression nut, the central axis of the compression nut and the central axis of the nozzle are on the same straight line, and a rubber gasket is arranged at the joint of the compression nut and the desulfurization spray gun rod.
4. The desulfurization spray gun according to claim 1, wherein a desulfurization nozzle joint is arranged at the joint of the desulfurization spray gun rod and the desulfurization nozzle, and the desulfurization spray gun rod and the desulfurization nozzle are fixedly connected through the desulfurization nozzle joint.
5. The desulfurization lance of any one of claims 1 to 4, wherein the desulfurization nozzle body and the vane pack are each formed of 2205 duplex stainless steel, C276 alloy steel or silicon carbide.
6. The desulfurization spray gun according to claim 1, wherein the air nozzle connecting seat is in threaded connection with the air nozzle, and a rubber sealing ring is arranged at the threaded connection.
7. The desulfurization lance of claim 5, wherein the desulfurization lance stem, pneumatic lance stem, desulfurization nozzle body, and air nozzle are cylindrical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610470935.5A CN107537307B (en) | 2016-06-24 | 2016-06-24 | Desulfurization spray gun |
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| CN201610470935.5A CN107537307B (en) | 2016-06-24 | 2016-06-24 | Desulfurization spray gun |
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| CN107537307B true CN107537307B (en) | 2023-09-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2246541Y (en) * | 1995-07-10 | 1997-02-05 | 北京波罗努斯涂装设备有限公司 | Mixed gas spraying machine |
| JPH1034029A (en) * | 1996-07-22 | 1998-02-10 | Takeshi Sakamoto | Coating spray gun |
| CN201752923U (en) * | 2010-07-01 | 2011-03-02 | 大连橡胶塑料机械股份有限公司 | Novel nitrogen high-pressure injection nozzle |
| CN102671533A (en) * | 2012-06-11 | 2012-09-19 | 杭州浙大天元科技有限公司 | Low-air consumption effervescent atomizer applicable to SNCR (selective non-catalytic reduction) denitrification technology |
| CN103104335A (en) * | 2013-02-04 | 2013-05-15 | 于魁江 | Novel internal-combustion engine |
-
2016
- 2016-06-24 CN CN201610470935.5A patent/CN107537307B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2246541Y (en) * | 1995-07-10 | 1997-02-05 | 北京波罗努斯涂装设备有限公司 | Mixed gas spraying machine |
| JPH1034029A (en) * | 1996-07-22 | 1998-02-10 | Takeshi Sakamoto | Coating spray gun |
| CN201752923U (en) * | 2010-07-01 | 2011-03-02 | 大连橡胶塑料机械股份有限公司 | Novel nitrogen high-pressure injection nozzle |
| CN102671533A (en) * | 2012-06-11 | 2012-09-19 | 杭州浙大天元科技有限公司 | Low-air consumption effervescent atomizer applicable to SNCR (selective non-catalytic reduction) denitrification technology |
| CN103104335A (en) * | 2013-02-04 | 2013-05-15 | 于魁江 | Novel internal-combustion engine |
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| CN107537307A (en) | 2018-01-05 |
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