Efficient ammonia water evaporator for SCR denitration

Abstract

The application discloses a kind of high-efficiency ammonia water evaporators of SCR denitration, it relates to environmental protection engineering equipment technical field, a kind of high-efficiency ammonia water evaporators of SCR denitration, including evaporator pipe body, the inside of the evaporator pipe body is respectively used for heating and evaporating heating chamber and evaporation chamber, the evaporator pipe body is connected with the liquid pipe for ammonia water conveying for communicating, further include steam conveying assembly, setting on evaporator pipe body, for heating steam is conveyed to heating chamber, adjusting assembly is set on the steam conveying assembly for steam conveying speed adjustment.The ammonia water evaporator of the application of SCR denitration in the process of using, by the mutual cooperation of steam conveying assembly, adjusting assembly, driving assembly and transmission assembly, the conveying efficiency of ammonia water and hot steam can be synchronously adjusted, to achieve the purpose of adaptive control, ensure the efficiency of evaporator, and avoid the problems of internal scale crystallization, pipeline blockage and resource waste.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering equipment technology, specifically to a high-efficiency ammonia water evaporator for SCR denitrification. Background Technology

[0002] The ammonia evaporator is a core component of the SCR denitrification system that rapidly, stably, and safely evaporates approximately 20% liquid ammonia into a mixture of ammonia gas and water vapor, providing a stable ammonia source for the denitrification reaction. Unlike ordinary evaporators, it features faster evaporation, more uniform mixing, no residual liquid, greater safety, and lower energy consumption.

[0003] The SCR denitrification high-efficiency ammonia water evaporator efficiently vaporizes ammonia water into ammonia mixture through atomization, enhanced heat exchange, and precise temperature control, providing a stable reducing agent for the catalytic reduction reaction. It is widely used in environmental protection projects such as power, metallurgy, building materials, and solid waste disposal, and is a core piece of equipment for achieving ultra-low emissions of nitrogen oxides and controlling air pollution.

[0004] During operation, the ammonia evaporator utilizes a coordinated ammonia delivery system and a hot steam delivery system to rapidly mix and exchange heat with hot steam after atomization, achieving complete vaporization and providing a stable ammonia source for SCR denitrification. However, the delivery volumes of ammonia and hot steam are difficult to adaptively match and control. If the hot steam volume is insufficient and the ammonia volume is excessive, the heat will be insufficient to completely evaporate the ammonia, resulting in incomplete evaporation, droplet adhesion to the wall, and liquid residue accumulation. This leads to decreased evaporator efficiency, internal scaling and crystallization, and pipe blockage. Conversely, excessive hot steam and insufficient ammonia volume result in excess heat, causing chamber overheating and localized overheating. This not only wastes energy but also accelerates equipment corrosion, affecting operational safety and service life. Therefore, we propose a high-efficiency ammonia evaporator for SCR denitrification. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency ammonia evaporator for SCR denitrification to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency ammonia evaporator for SCR denitrification, comprising an evaporator tube body, wherein the evaporator tube body is provided with a heating chamber and an evaporation chamber respectively for heating and evaporation, and a feed pipe for ammonia water transportation is connected to the evaporator tube body, and further comprising: A steam delivery assembly is installed on the evaporator tube body and is used to deliver heated steam toward the heating chamber. The steam delivery assembly is equipped with a regulating component for adjusting the steam delivery speed. The drive assembly, located outside the evaporator tube body, is used to drive the regulating assembly; And a transmission component installed on the feed pipe for adaptively driving the drive component according to the ammonia delivery speed.

[0007] Preferably, the steam delivery assembly includes an installation pipe and a connecting pipe. The installation pipe is installed on the outside of the evaporator tube and communicates with the heating chamber. A flexible hose for auxiliary communication and delivery is installed between the installation pipe and the connecting pipe. An installation rod for auxiliary connection and fixation is fixed between the connecting pipe and the evaporator tube.

[0008] Preferably, the adjusting assembly includes two sets of connecting blocks disposed above the hose, a connecting assembly for guiding and connecting the connecting blocks is disposed on the outer side of the evaporator tube, a pull rope for pulling against the hose is sleeved on the outer side of the hose, the two ends of the pull rope are arranged in a crossed state and fixed to the two sets of connecting blocks respectively, and a linkage assembly for linkage of the connecting blocks and a pushing assembly for pushing the connecting blocks are disposed between the two sets of connecting blocks.

[0009] Preferably, the linkage component includes two sets of linkage plates disposed between two sets of connecting blocks, with each set of linkage plates corresponding to one of the two sets of connecting blocks, and multiple sets of linkage rods for auxiliary connection and fixation fixed between the connecting blocks and the linkage plates.

[0010] Preferably, the pushing assembly includes a mounting cylinder disposed between two sets of linkage plates, a push rod slidably connected to the mounting cylinder, a pressing pin fixed at the end of the push rod away from the mounting cylinder for abutting and driving against the linkage plates, and a spring installed inside the mounting cylinder for assisting in the elastic connection of the push rod.

[0011] Preferably, the drive assembly includes a drive shaft centrally disposed between two sets of linkage plates, one end of the drive shaft is fixed with a mounting plate, the mounting plate is concentrically disposed with the drive shaft, and one end of the mounting cylinder is fixed to the outside of the mounting plate.

[0012] Preferably, the pushing components are provided in multiple sets, and the multiple sets of pushing components are arranged in a ring array on the outside of the mounting plate.

[0013] Preferably, the transmission assembly includes an installation cylinder that is connected to the feed pipe, a connecting cylinder that is connected to the installation cylinder, a drive shaft that is rotatably connected to the installation cylinder and the connecting cylinder, a connecting disc that is rotatably connected inside the installation cylinder, one end of the drive shaft that is fixed to the connecting disc, and the connecting disc that is concentric with the installation shaft, and fan blades that are fixed on the periphery of the connecting disc for driving against the ammonia water conveyed inside the feed pipe.

[0014] Preferably, the connecting assembly includes two sets of side brackets fixed to the outside of the evaporator tube body, two sets of connecting blocks located between the two sets of side brackets, multiple sets of sliding rods fixed between the two sets of side brackets, and the two sets of connecting blocks slidably connected to the multiple sets of sliding rods.

[0015] Compared with the prior art, the beneficial effects of the present invention are: During use, the SCR denitrification ammonia evaporator of the present invention, through the cooperation of the steam conveying component, the regulating component, the driving component and the transmission component, can synchronously adjust the conveying efficiency of ammonia water and hot steam to achieve adaptive control, ensure evaporator efficiency, and avoid problems such as internal scaling and crystallization, pipeline blockage and resource waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the evaporator tube of the present invention; Figure 3 This is a schematic diagram showing the positional relationship between the steam conveying assembly and the feed pipe of the present invention; Figure 4 This is a schematic diagram of the adjustment component and connection component of the present invention; Figure 5 This is a schematic diagram of the linkage component and the driving component of the present invention; Figure 6 This is a schematic diagram showing the positional relationship between the transmission assembly and the feed pipe of the present invention; Figure 7 This is a schematic diagram of the drive component and the actuation component of the present invention.

[0017] In the diagram: 101, Evaporator tube body; 102, Heating chamber; 103, Evaporation chamber; 104, Feed pipe; 201, Mounting pipe; 202, Connecting pipe; 203, Hose; 204, Mounting rod; 301, Connecting block; 302, Pull rope; 401, Side frame; 402, Slide rod; 501, Linkage plate; 502, Linkage rod; 601, Fixing cylinder; 602, Push rod; 603, Extrusion pin; 604, Spring; 701, Drive shaft; 702, Mounting plate; 801, Mounting cylinder; 802, Connecting cylinder; 803, Connecting plate; 804, Fan blade. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1

[0020] Please see Figures 1-7The figure shows a high-efficiency ammonia water evaporator for SCR denitrification, including an evaporator tube body 101. The evaporator tube body 101 is provided with a heating chamber 102 and an evaporation chamber 103 for heating and evaporation respectively. A feed pipe 104 for ammonia water transportation is connected to the evaporator tube body 101. It should be noted that during the use of the SCR denitrification ammonia evaporator, one end of the feed pipe 104 is connected to the ammonia delivery system, and the other end of the connecting pipe 202 is connected to the hot steam delivery system. After the connection is completed, the ammonia to be treated is delivered to the interior of the evaporator tube 101 through the feed pipe 104. The hot steam for drying is delivered to the interior of the evaporator tube 101 through the connection of the connecting pipe 202 and the communication between the hose 203 and the installation pipe 201. The delivered ammonia and hot steam meet in the heating chamber 102 and the evaporation chamber 103 inside the evaporator tube 101. Through rapid mixing and heat exchange, the ammonia is completely vaporized, providing a stable ammonia source for SCR denitrification. In addition, the connection between the liquid feed pipe 104 and the ammonia water conveying system, the connection between the connecting pipe 202 and the hot steam conveying system, and the working principle of the ammonia water evaporator are conventional technical means in this application and will not be elaborated on here. Also includes: A steam conveying assembly is installed on the evaporator tube 101 and is used to convey heated steam toward the heating chamber 102. The steam conveying assembly is equipped with a regulating component for regulating the steam conveying speed. A drive assembly, located outside the evaporator tube body 101, is used to drive the regulating assembly; And a transmission component provided on the feed pipe 104 for adaptively driving the drive component according to the ammonia water conveying speed; It should be noted that during the operation of the SCR denitrification ammonia evaporator, the steam delivery component, regulating component, driving component, and transmission component work together to simultaneously adjust the delivery efficiency of ammonia and hot steam, achieving adaptive control, ensuring evaporator efficiency, and avoiding problems such as internal scaling and crystallization, pipeline blockage, and resource waste.

[0021] Preferably, the steam delivery assembly includes an installation pipe 201 and a connecting pipe 202. The installation pipe 201 is installed on the outside of the evaporator tube body 101 and communicates with the heating chamber 102. A flexible hose 203 for auxiliary communication and delivery is installed between the installation pipe 201 and the connecting pipe 202. An installation rod 204 for auxiliary connection and fixation is fixed between the connecting pipe 202 and the evaporator tube body 101. It should be noted that during the use of the SCR denitrification ammonia evaporator, one end of the feed pipe 104 is connected to the ammonia delivery system, and the other end of the connecting pipe 202 is connected to the hot steam delivery system. After the connection is completed, the ammonia to be treated is delivered to the interior of the evaporator tube 101 through the feed pipe 104. The hot steam for drying is delivered to the interior of the evaporator tube 101 through the connection of the connecting pipe 202 and the communication between the hose 203 and the installation pipe 201.

[0022] Preferably, the adjustment assembly includes two sets of connecting blocks 301 disposed above the hose 203. A connecting assembly for guiding and connecting the connecting blocks 301 is disposed on the outside of the evaporator tube body 101. A pull rope 302 for pulling against the hose 203 is sleeved on the outside of the hose 203. The two ends of the pull rope 302 are arranged in a crossed state and fixed to the two sets of connecting blocks 301 respectively. A linkage assembly for linkage of the connecting blocks 301 and a pushing assembly for pushing the connecting blocks 301 are disposed between the two sets of connecting blocks 301. It should be noted here that: through transmission, the two sets of connecting blocks 301 are driven to move under force. During the movement of the two sets of connecting blocks 301, the sliding guide of the connecting blocks 301 after being subjected to force by the slide rod 402 causes the two sets of connecting blocks 301 to move away from each other. Through the mutual movement of the two sets of connecting blocks 301, the pull rope 302 is locked and pulled. During the pulling process, through the abutting and squeezing action between the pull rope 302 and the outside of the hose 203, the diameter of the hose 203 is tightened. Through the contraction of the diameter of the hose 203, the cross-sectional area of ​​the conveying is reduced, the hot steam airflow is compressed, the hot steam flow rate is increased, and the efficiency of hot steam conveying is controlled.

[0023] Preferably, the linkage assembly includes two sets of linkage plates 501 disposed between two sets of connecting blocks 301, with each set of linkage plates 501 corresponding to one of the two sets of connecting blocks 301. Multiple sets of linkage rods 502 for auxiliary connection and fixation are fixed between the connecting blocks 301 and the linkage plates 501. The pushing assembly includes a fixed cylinder 601 disposed between the two sets of linkage plates 501. A push rod 602 is slidably connected to the fixed cylinder 601. A pressing pin 603 for abutting against and driving the linkage plates 501 is fixed to the end of the push rod 602 away from the fixed cylinder 601. A spring 604 for assisting in the elastic connection of the push rod 602 is installed inside the fixed cylinder 601. The drive assembly includes a drive shaft 701 centrally disposed between the two sets of linkage plates 501. A mounting plate 702 is fixed to one end of the drive shaft 701. The mounting plate 702 is concentrically disposed with the drive shaft 701. One end of the fixed cylinder 601 is fixed to the outside of the mounting plate 702. It should be noted that during the ammonia water transport on the feed pipe 104, the ammonia water is connected to the mounting cylinder 801, allowing the transported ammonia water to pass through the mounting cylinder 801. As the ammonia water passes through the mounting cylinder 801, the ammonia water, through the interaction with the fan blades 804 on the connecting plate 803, causes the connecting plate 803 to rotate. This rotation of the connecting plate 803 drives the drive shaft 701 to rotate, which in turn drives the mounting plate 702 to rotate. Furthermore, the rotation of the mounting plate 702... The fixed cylinder 601 and push rod 602 are rotated. During the rotation, the push rod 602 is subjected to centrifugal force and slides outward on the fixed cylinder 601. During the movement of the push rod 602, the pressing pin 603 at one end of the push rod 602 abuts against the linkage plate 501. Through the abutting action of the pressing pin 603 and the linkage plate 501, the two sets of linkage plates 501 are subjected to force and move away from each other. During the movement of the two sets of linkage plates 501, the two sets of connecting blocks 301 are driven to move under force through the connecting action of the linkage rod 502.

[0024] Preferably, there are multiple sets of push components, and the multiple sets of push components are arranged in a ring array on the outside of the mounting plate 702; It should be noted here that multiple sets of pushing components are used to ensure pushing efficiency and effectiveness.

[0025] Preferably, the transmission assembly includes an installation cylinder 801 that is connected to the liquid feed pipe 104, a connecting cylinder 802 that is connected to the installation cylinder 801, a drive shaft 701 that is rotatably connected to the installation cylinder 801 and the connecting cylinder 802, a connecting disc 803 that is rotatably connected inside the installation cylinder 801, one end of the drive shaft 701 that is fixed to the connecting disc 803, and the connecting disc 803 that is concentric with the drive shaft 701, and a fan blade 804 that is fixed on the periphery of the connecting disc 803 for driving against the ammonia water conveyed inside the liquid feed pipe 104; It should be noted that during the process of ammonia water being transported on the liquid pipe 104, the ammonia water being transported passes through the mounting cylinder 801 because the mounting cylinder 801 is connected to the liquid pipe 104. As the ammonia water passes through the mounting cylinder 801, the connecting cylinder 803 is rotated due to the mutual transmission between the transported ammonia water and the fan blades 804 on the connecting plate 803. During the rotation of the connecting plate 803, the drive shaft 701 is driven to rotate.

[0026] Preferably, the connecting assembly includes two sets of side brackets 401 fixed to the outside of the evaporator tube body 101, two sets of connecting blocks 301 located between the two sets of side brackets 401, multiple sets of sliding rods 402 fixed between the two sets of side brackets 401, and the two sets of connecting blocks 301 slidably connected to the multiple sets of sliding rods 402. It should be noted here that multiple sets of sliding rods 402 between the side frames 401 assist in the sliding guide connection of the two sets of connecting blocks 301.

[0027] This solution includes a high-efficiency ammonia evaporator for SCR denitrification, comprising the following steps: In the operation of the SCR denitrification ammonia evaporator, one end of the feed pipe 104 is connected to the ammonia delivery system, and the other end of the connecting pipe 202 is connected to the hot steam delivery system. After the connection is completed, the ammonia to be treated is delivered to the interior of the evaporator tube 101 through the feed pipe 104. The hot steam for drying is delivered to the interior of the evaporator tube 101 through the connection of the connecting pipe 202 and the communication between the hose 203 and the installation pipe 201. The delivered ammonia and hot steam meet in the heating chamber 102 and the evaporation chamber 103 inside the evaporator tube 101. Through rapid mixing and heat exchange, the ammonia is completely vaporized, providing a stable ammonia source for SCR denitrification. During the ammonia water transport on the feed pipe 104, the ammonia water is connected to the mounting cylinder 801, allowing the transported ammonia water to pass through the mounting cylinder 801. As the ammonia water passes through the mounting cylinder 801, the ammonia water, through the interaction with the fan blades 804 on the connecting plate 803, causes the connecting plate 803 to rotate. This rotation of the connecting plate 803 drives the drive shaft 701 to rotate, which in turn drives the mounting plate 702 to rotate. This rotation of the mounting plate 702, in turn, drives the fixed cylinder 601 and the push rod 602 to rotate. During this rotation, the push rod 602, under the action of centrifugal force, slides outwards on the fixed cylinder 601. During this movement, the pressing pin 603 at one end of the push rod 602 abuts against the linkage plate 501. Through the action of the pressing pin 603 against the linkage plate 501, the two sets of linkage plates 501 are forced to move away from each other. During the movement of the two sets of linkage plates 501, the linkage rod 502 connects the two sets of connecting blocks 301. During the movement of the two sets of connecting blocks 301, the sliding rod 402 guides the connecting blocks 301 after they are forced to move away from each other. The movement of the two sets of connecting blocks 301 away from each other locks and pulls the pull rope 302. During the pulling process, the pull rope 302 is pressed against the outside of the hose 203, causing the diameter of the hose 203 to tighten. The contraction of the diameter of the hose 203 reduces the cross-sectional area of ​​the conveying, compresses the hot steam flow, and increases the hot steam flow rate, thereby controlling the efficiency of hot steam conveying. During the entire ammonia and hot steam conveying control process, when the efficiency of ammonia conveyed on the feed pipe 104 increases, the interaction between the ammonia and the fan blades 804 on the connecting plate 803 causes the connecting plate 803, drive shaft 701, and mounting plate 702 to rotate at a faster speed. During this rotation, the centrifugal force on the push rod 602 increases, causing it to continue moving outward on the fixed cylinder 601. During this movement, the squeezing pin 603 further pushes the two sets of linkage plates 501 away from each other. During this pushing process, through the same transmission, the orifice diameter of the hose 203 is further tightened, increasing the hot steam flow rate. Therefore, in the ammonia... When the water flow rate increases, the hot steam flow rate increases synchronously through transmission. Conversely, when the ammonia flow rate decreases, the rotational speeds of the connecting plate 803, drive shaft 701, and mounting plate 702 decrease. Through the opposite transmission, the tightening effect on the hose 203 is alleviated. Under the action of its own elasticity, the pore size of the hose 203 expands, causing the hot steam flow rate to decrease synchronously. Therefore, in the entire process of ammonia and hot steam transport control, the transport efficiency of ammonia and hot steam can be adjusted synchronously through transmission to achieve adaptive control, ensure evaporator efficiency, and avoid problems such as internal scaling and crystallization, pipe blockage, and resource waste.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency ammonia water evaporator for SCR denitrification, comprising: Evaporator tube (101), the interior of which is provided with heating chamber (102) and evaporation chamber (103) for heating and evaporation respectively, and a feed pipe (104) for ammonia water transportation is connected to the evaporator tube (101). Its characteristic is that it further includes: A steam delivery assembly is provided on the evaporator tube (101) for delivering heated steam toward the heater (102), and the steam delivery assembly is provided with a regulating component for regulating the steam delivery speed; A drive assembly is located outside the evaporator tube body (101) and is used to drive the regulating assembly; And a transmission component provided on the feed pipe (104) for adaptively driving the drive component according to the ammonia water delivery speed.

2. The high-efficiency ammonia evaporator for SCR denitrification according to claim 1, characterized in that: The steam delivery assembly includes an installation pipe (201) and a connecting pipe (202). The installation pipe (201) is installed on the outside of the evaporator tube body (101) and communicates with the heating chamber (102). A flexible hose (203) for auxiliary communication and delivery is installed between the installation pipe (201) and the connecting pipe (202). An installation rod (204) for auxiliary connection and fixation is fixed between the connecting pipe (202) and the evaporator tube body (101).

3. The high-efficiency ammonia evaporator for SCR denitrification according to claim 2, characterized in that: The adjustment assembly includes two sets of connecting blocks (301) disposed above the hose (203). A connecting assembly for guiding the connecting blocks (301) is disposed on the outside of the evaporator tube body (101). A pull rope (302) for pulling against the hose (203) is sleeved on the outside of the hose (203). The two ends of the pull rope (302) are arranged in a crossed state and fixed to the two sets of connecting blocks (301) respectively. A linkage assembly for linkage of the connecting blocks (301) and a pushing assembly for pushing the connecting blocks (301) are disposed between the two sets of connecting blocks (301).

4. The high-efficiency ammonia evaporator for SCR denitrification according to claim 3, characterized in that: The linkage component includes two sets of linkage plates (501) disposed between two sets of connecting blocks (301). The two sets of linkage plates (501) are respectively disposed corresponding to the two sets of connecting blocks (301). Multiple sets of linkage rods (502) for auxiliary connection and fixation are fixed between the connecting blocks (301) and the linkage plates (501).

5. The high-efficiency ammonia evaporator for SCR denitrification according to claim 4, characterized in that: The pushing assembly includes a fixed cylinder (601) disposed between two sets of linkage plates (501), a push rod (602) is slidably connected to the fixed cylinder (601), and a pressing pin (603) for abutting and driving against the linkage plate (501) is fixed at one end of the push rod (602) away from the fixed cylinder (601). A spring (604) for assisting in the elastic connection of the push rod (602) is installed inside the fixed cylinder (601).

6. The high-efficiency ammonia evaporator for SCR denitrification according to claim 5, characterized in that: The drive assembly includes a drive shaft (701) centrally located between two sets of linkage plates (501), with a mounting plate (702) fixed to one end of the drive shaft (701). The mounting plate (702) is concentrically arranged with the drive shaft (701), and one end of the fixing cylinder (601) is fixed to the outside of the mounting plate (702).

7. A high-efficiency ammonia evaporator for SCR denitrification according to claim 6, characterized in that: The pushing components are provided in multiple sets, and the multiple sets of pushing components are arranged in a ring array on the outside of the mounting plate (702).

8. The high-efficiency ammonia evaporator for SCR denitrification according to claim 7, characterized in that: The transmission assembly includes an installation cylinder (801) that is connected to the liquid pipe (104), a connecting cylinder (802) that is connected to the installation cylinder (801), a drive shaft (701) that is rotatably connected to the installation cylinder (801) and the connecting cylinder (802), a connecting disc (803) that is rotatably connected inside the installation cylinder (801), one end of the drive shaft (701) that is fixed to the connecting disc (803), and the connecting disc (803) and the drive shaft (701) are concentrically arranged, and a fan blade (804) that is fixed on the periphery of the connecting disc (803) for driving against the ammonia water conveyed inside the liquid pipe (104).

9. A high-efficiency ammonia evaporator for SCR denitrification according to claim 3, characterized in that: The connecting assembly includes two sets of side brackets (401) fixed to the outside of the evaporator tube body (101), two sets of connecting blocks (301) located between the two sets of side brackets (401), and multiple sets of sliding rods (402) fixed between the two sets of side brackets (401). The two sets of connecting blocks (301) are slidably connected to the multiple sets of sliding rods (402).

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