Efficient silicon carbide sulfuric acid falling film absorber

Abstract

The utility model relates to the technical field of falling film absorbers, and discloses an efficient silicon carbide sulfuric acid falling film absorber which comprises a shell, an inner core is fixed in the shell, a feeding box and a discharging box are installed at the two ends of the shell respectively, a first mixing device and a second mixing device are arranged in the feeding box, and a second mixing device is arranged in the discharging box. A connecting section of the first mixing device is connected with an air inlet of the feeding box, the other end of the connecting section is communicated with a contraction section, the other end of the contraction section is connected with an injection section, the injection section is in a frustum shape, the large-diameter end of the injection section faces the shell, and a buffering cavity is formed between the first mixing device and the feeding box. A liquid inlet of the feeding box is communicated with the buffering cavity, a plurality of spraying holes are evenly formed in the spraying section, the second mixing device is arranged in the spraying section, the device solves the problems that gas-liquid contact is uneven, and the absorption efficiency is low, gas-liquid mixing is achieved through the first mixing device and the second mixing device, and the gas absorption rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of falling film absorbers, and more specifically, to a high-efficiency silicon carbide sulfuric acid falling film absorber. Background Technology

[0002] A falling film absorber is a device that uses packing material to form contact with a liquid, absorbing harmful substances from a gas into the liquid.

[0003] Currently, falling film absorbers on the market consist of three parts: a gas-liquid distributor, an absorption cooling section, and a gas-liquid separator. Their absorption rate is closely related to the degree of gas-liquid mixing after passing through the gas-liquid distributor. Therefore, improving the uniformity of gas-liquid distribution is the key to improving absorption efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-efficiency silicon carbide sulfuric acid falling film absorber.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-efficiency silicon carbide sulfuric acid falling film absorber includes a housing with an inner core fixed inside. A feed box and a discharge box are respectively installed at both ends of the housing. A first mixing device and a second mixing device are disposed within the feed box. The connecting section of the first mixing device is connected to the air inlet of the feed box, and the other end of the connecting section is connected to a contraction section. The other end of the contraction section is connected to a spray section, which is frustoconical in shape, with its larger diameter end facing the housing. A buffer chamber is formed between the first mixing device and the feed box. The liquid inlet of the feed box is connected to the buffer chamber. A plurality of spray holes are evenly distributed on the spray section, and the second mixing device is disposed inside the spray section.

[0007] The present invention is further configured such that: the inner diameter of the contraction section is smaller than the inner diameter of the connecting section, and the small-diameter end of the injection section is connected to the contraction section.

[0008] The present invention is further configured such that: the mixing device two includes a mounting frame, the mounting frame is fixed on the injection section, a connecting shaft is rotatably connected to the mounting frame, the connecting shaft is coaxially arranged with the mixing device one, a power wheel and several stirring wheels are mounted on the connecting shaft, the power wheel is arranged on the side facing the contraction section, the blades of the power wheel are inclined, and the gas entering the injection section can drive the power wheel.

[0009] The present invention is further configured such that: an inner cylinder is provided inside the shell, a cooling layer is provided between the shell and the inner cylinder, and a coolant outlet and a coolant inlet are respectively provided at both ends of the shell, and the coolant outlet and the coolant inlet are both connected to the cooling layer.

[0010] The present invention is further configured such that: two baffles are provided between the shell and the inner cylinder, the two baffles divide the cooling layer into two uniform halves, the coolant outlet and the coolant inlet are respectively connected to the two halves of the cooling layer, and a plurality of through holes are provided through the inner cylinder, the through holes being arranged radially along the inner cylinder.

[0011] The present invention is further configured such that: a plurality of reaction tubes are penetrated through the inner core, the reaction tubes are arranged along the axial direction of the shell, the end of the reaction tube facing the feed box is the inlet, the inlet extends into the feed box, a plurality of flow outlets are evenly opened on the inlet, the flow outlets are triangular in shape, the tip of the flow outlet is flush with the end face of the inner core, a plurality of flow holes are penetrated through the main body of the inner core, the flow holes are perpendicular to the reaction tubes, the flow holes and the reaction tubes are arranged alternately, and the two ends of the flow holes are respectively connected to the two halves of the cooling layer.

[0012] The advantages of this utility model are:

[0013] 1. A mixing device is installed in the feed box. The connecting section of the mixing device is connected to the air inlet. The gas passing through the air inlet is compressed and accelerated in the contraction section, and then enters the spray section. After the flow area is enlarged, it moves forward in a scattering manner. At the same time, the absorbent liquid entering from the liquid inlet is sprayed into the spray section from the buffer chamber through the spray hole and mixes with the scattered gas. The mixing device disperses the gas and liquid, increases the contact area, and thus ensures the mixing effect.

[0014] 2. A second mixing device is installed in the injection section of the first mixing device. The second mixing device consists of a power wheel and a stirring wheel. The power wheel is located on the side near the contraction section. The gas entering the injection section can drive the power wheel to rotate, thereby driving the stirring wheel to rotate synchronously through the connecting shaft. This further stirs the gas-liquid mixture that has been initially mixed by the first mixing device, thus improving the mixing effect and thus improving the absorption efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the present invention;

[0016] Figure 2 For along Figure 1 The cross-sectional view along line AA is shown below;

[0017] Figure 3 For along Figure 1 The BB line cross-section shown;

[0018] Figure 4 This is a schematic diagram of the inner core structure of this utility model;

[0019] Figure 5 for Figure 2Enlarged view of section C shown;

[0020] In the diagram: 1. Shell; 11. Inner cylinder; 12. Cooling layer; 13. Coolant outlet; 14. Coolant inlet; 15. Through hole; 16. Baffle; 2. Feed box; 21. Air inlet; 22. Liquid inlet; 3. Discharge box; 4. Mixing device one; 41. Connecting section; 42. Contraction section; 43. Spray section; 44. Spray hole; 5. Inner core; 51. Reaction tube; 52. Flow passage; 53. Drain; 6. Mixing device two; 61. Mounting bracket; 62. Connecting shaft; 63. Power wheel; 64. Stirring wheel. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0024] Please see Figure 1-5 The present invention provides the following technical solution:

[0025] A high-efficiency silicon carbide sulfuric acid falling film absorber includes a shell 1, an inner core 5 fixed inside the shell 1, and a feed box 2 and a discharge box 3 installed at both ends of the shell 1, forming the main structure of the falling film absorber. The gas to be absorbed and the absorbent liquid enter from the feed box 2, mix into a gas-liquid mixture, and then disperse into the inner core 5 for absorption. Finally, the gas-liquid mixture after the specific substance has been absorbed flows out of the feed box 3 for gas-liquid separation, and the gas and liquid are output separately.

[0026] The shell 1 is provided with an inner cylinder 11, and the space between the shell 1 and the inner cylinder 11 is a cooling layer 12. The shell 1 is provided with a coolant outlet 13 and a coolant inlet 14 at both ends, and both the coolant outlet 13 and the coolant inlet 14 are connected to the cooling layer 12.

[0027] Two baffles 16 are provided between the shell 1 and the inner cylinder 11. The two baffles 16 divide the cooling layer 12 into two equal halves. The coolant outlet 13 and the coolant inlet 14 are respectively connected to the two halves of the cooling layer 12. Several through holes 15 are provided through the inner cylinder 11. The through holes 15 are arranged radially along the inner cylinder 11.

[0028] The coolant enters the upper half of the cooling layer 12 through the coolant inlet 14, flows into the lower half of the cooling layer 12 through the through hole 15, and finally exits through the coolant outlet 13. This can cool the entire inner core 5, maintain the reaction temperature, and thus improve the absorption efficiency.

[0029] The inner core 5 contains several reaction tubes 51, which are arranged axially along the shell 1. The end of the reaction tube 51 facing the feed box 2 is the inlet, which extends into the feed box 2. Several flow inlets 53 are evenly distributed on the inlet. The flow inlets 53 are triangular in shape, with their tips flush with the end face of the inner core 5. One side opposite the tip is on the inlet of the reaction tube 51, which can prevent the fluid from forming a tension surface on the inlet of the reaction tube 51, ensuring that the fluid can enter the reaction tube 51 evenly, promoting uniform film formation and improving absorption efficiency. Several flow holes 52 are formed through the main body of the inner core 5. The flow holes 52 are perpendicular to the reaction tubes 51 and are arranged alternately with the reaction tubes 51. The two ends of the flow holes 52 are respectively connected to the two halves of the cooling layer 12. The coolant flows through the flow holes 52, which can cool the inside of the inner core 5, promote temperature uniformity, and ensure absorption efficiency.

[0030] A mixing device 4 is provided inside the feed box 2. The mixing device 4 includes a connecting section 41, a contraction section 42 and a spray section 43 arranged in sequence. The connecting section 41 is connected to the air inlet 21 of the feed box 2. The other end of the connecting section 41 is connected to the contraction section 42. The inner diameter of the contraction section 42 is smaller than the inner diameter of the connecting section 41. The other end of the contraction section 42 is connected to the spray section 43. The spray section 43 is frustoconical. The small diameter end of the spray section 43 is connected to the contraction section 42. The large diameter end of the spray section 43 faces the shell 1. A buffer chamber is formed between the mixing device 4 and the feed box 2. The liquid inlet 22 of the feed box 2 is connected to the buffer chamber. Several spray holes 44 are evenly opened on the spray section 43.

[0031] By changing the flow area, the gas is accelerated when it passes through the contraction section 42, and then suddenly decelerates when it enters the injection section 43. The gas is ejected forward along the frustum-shaped injection section 43 and mixes with the liquid entering the buffer chamber. When the liquid enters the injection section 43 through the injection hole 44, it is dispersed, and the gas also enters the injection section 43 in a jetting manner, which increases the contact area between the gas and liquid, thereby promoting gas-liquid mixing.

[0032] The injection section 43 is equipped with a mixing device 2 6, which includes a mounting frame 61 fixed on the injection section 43. A connecting shaft 62 is rotatably connected to the mounting frame 61. The connecting shaft 62 is coaxial with the mixing device 4. A power wheel 63 and several stirring wheels 64 are mounted on the connecting shaft 62. The power wheel 63 is located on the side facing the contraction section 42. The blades of the power wheel 63 are inclined. The gas entering the injection section 43 can drive the power wheel 63, thereby driving the stirring wheels 64 to rotate, stirring the gas-liquid mixture that has undergone one mixing in the injection section 43, improving the mixing effect, promoting the uniformity of mixing, and thus ensuring the absorption efficiency.

[0033] Specifically, a mixing device 4 is provided in the feed box 2. The connecting section 41 of the mixing device 4 is connected to the air inlet 21. The gas passing through the air inlet 21 is compressed and accelerated in the contraction section 42, and then enters the spray section 43. After the flow area is enlarged, it moves forward in a scattering manner. At the same time, the absorbent liquid entering from the liquid inlet 22 is sprayed from the buffer chamber into the spray section 43 through the spray hole 44 and mixes with the scattered gas. The mixing device 4 disperses the gas and liquid, increases the contact area, and thus ensures the mixing effect.

[0034] Mixing device 2 6 is installed in the injection section 43 of mixing device 1 4. Mixing device 2 6 consists of a power wheel 63 and a stirring wheel 64. The power wheel 63 is located on the side close to the contraction section 42. The gas entering the injection section 43 can drive the power wheel 63 to rotate, thereby driving the stirring wheel 64 to rotate synchronously through the connecting shaft 62. This further stirs the gas-liquid mixture after the initial mixing by mixing device 1 4, improving the mixing effect, that is, improving the absorption efficiency.

[0035] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar counterparts and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high efficiency silicon carbide sulphuric acid falling film absorber comprising a housing (1) characterised in that: The shell (1) is fixed with an inner core (5), both ends of the shell (1) are respectively provided with a feeding box (2) and a discharging box (3), the feeding box (2) is provided with a mixing device one (4) and a mixing device two (6), the connecting section (41) of the mixing device one (4) is connected with the air inlet (21) of the feeding box (2), the other end of the connecting section (41) is communicated with a contraction section (42), the other end of the contraction section (42) is connected with a spraying section (43), the spraying section (43) is a truncated cone, the large diameter end of the spraying section (43) faces the shell (1), the mixing device one (4) and the feeding box (2) form a buffer cavity, the liquid inlet (22) of the feeding box (2) is communicated with the buffer cavity, a plurality of spraying holes (44) are uniformly arranged on the spraying section (43), and the mixing device two (6) is arranged in the spraying section (43).

2. A high efficiency silicon carbide sulphuric acid falling film absorber according to claim 1 characterised in that: The inner diameter of the contraction section (42) is smaller than that of the connecting section (41), and the small diameter end of the spraying section (43) is connected with the contraction section (42).

3. A high efficiency silicon carbide sulphuric acid falling film absorber according to claim 2 characterised in that: The mixing device two (6) comprises a mounting frame (61), the mounting frame (61) is fixed on the spraying section (43), a connecting shaft (62) is rotatably connected to the mounting frame (61), the connecting shaft (62) is coaxially arranged with the mixing device one (4), a power wheel (63) and a plurality of stirring wheels (64) are mounted on the connecting shaft (62), the power wheel (63) is arranged on the side facing the contraction section (42), the blades of the power wheel (63) are inclined, and the gas entering the spraying section (43) can push the power wheel (63).

4. A high efficiency SiC sulphuric acid falling film absorber according to claim 1, characterized in that: The shell (1) is provided with an inner cylinder (11), the shell (1) and the inner cylinder (11) are a cooling layer (12), both ends of the shell (1) are provided with a cooling liquid outlet (13) and a cooling liquid inlet (14), and the cooling liquid outlet (13) and the cooling liquid inlet (14) are communicated with the cooling layer (12).

5. A high efficiency silicon carbide sulphuric acid falling film absorber according to claim 4 characterised in that: The shell (1) and the inner cylinder (11) are provided with two baffles (16), the two baffles (16) divide the cooling layer (12) into two equal halves, the cooling liquid outlet (13) and the cooling liquid inlet (14) are communicated with the two halves of the cooling layer (12) respectively, and a plurality of through holes (15) are penetratingly arranged on the inner cylinder (11) and arranged along the radial direction of the inner cylinder (11).

6. A high efficiency silicon carbide sulphuric acid falling film absorber according to claim 5, characterised in that: The inner core (5) is provided with a plurality of reaction tubes (51) penetrating through the inner core (5), the reaction tubes (51) are arranged along the axial direction of the shell (1), one end of the reaction tubes (51) is provided with an inlet extending into the feed tank (2), a plurality of flow guide openings (53) are uniformly arranged on the inlet, the flow guide openings (53) are triangular, the tips of the flow guide openings (53) are flush with the end surface of the inner core (5), a plurality of through flow holes (52) are arranged on the main body of the inner core (5), the through flow holes (52) are perpendicular to the reaction tubes (51), the through flow holes (52) and the reaction tubes (51) are staggered, and the two ends of the through flow holes (52) are communicated with the two halves of the cooling layer (12) respectively.

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