Hydrochloric acid tail gas treatment device

Abstract

The utility model discloses a hydrochloric acid tail gas treatment device, which relates to the technical field of hydrochloric acid tail gas treatment equipment and comprises a spray tower, a liquid outlet pipe arranged at the bottom end of the spray tower, an exhaust pipe arranged at the top of the spray tower and a gas inlet pipe arranged at the bottom of one side wall of the spray tower, a barrier matched with the spraying mechanism is arranged in the inner cavity of the spraying tower; according to the utility model, the blocking piece and the spraying mechanism are arranged, and the blocking piece consisting of three groups of blocking plates is utilized, so that hydrochloric acid tail gas flows in the inner cavity of the spraying tower in an S-shaped manner from bottom to top, the retention time of the tail gas in the inner cavity of the spraying tower is effectively prolonged, and in the S-shaped flowing process of the hydrochloric acid tail gas, two brackets at the upper part and the lower part of the middle blocking plate are separated from each other; the tail gas can be degraded by spraying twice, so that the spraying degradation effect of the hydrochloric acid tail gas is effectively improved, and the hydrochloric acid tail gas is treated more sufficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrochloric acid tail gas treatment equipment, and particularly relates to a hydrochloric acid tail gas treatment device. Background Art

[0002] In industrial production, hydrochloric acid is often used. During the use of hydrochloric acid, there are some problems. Hydrochloric acid has strong volatility, and the hydrochloric acid tail gas contains soluble hydrogen chloride gas, which is also the main source of the harm of hydrochloric acid tail gas. The hydrogen chloride tail gas has strong irritation and harms the physical health of operators.

[0003] A common way to treat hydrochloric acid tail gas is to discharge the hydrochloric acid tail gas into a spray tower, so that the hydrochloric acid tail gas is dissolved in water under the spraying action of the absorption liquid to form hydrochloric acid.

[0004] However, since heat is released during the dissolution of hydrochloric acid tail gas, the temperature of the absorption liquid is too high, the absorption effect is not good, and the concentration of hydrochloric acid cannot reach a certain concentration. Content of the Utility Model

[0005] To solve the above technical problems, a hydrochloric acid tail gas treatment device is provided, which solves the problems in the prior art that heat is released during the dissolution of hydrochloric acid tail gas, resulting in too high temperature of the absorption liquid, poor absorption effect, and the concentration of hydrochloric acid not reaching a certain concentration.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a hydrochloric acid tail gas treatment device, including a spray tower, a liquid outlet pipe arranged at the bottom end of the spray tower, an exhaust pipe arranged at the top of the spray tower, and an air inlet pipe arranged at the bottom of one side wall of the spray tower. A spraying mechanism is arranged on the other side of the spray tower, and a blocking member matched with the spraying mechanism is arranged in the inner cavity of the spray tower.

[0007] The spraying mechanism includes a second connecting pipe arranged outside the spray tower. Two liquid injection pipes are arranged in the inner cavity of the spray tower. One end of the liquid injection pipe passes through the spray tower and is fixedly connected and communicated with the pipe body of the second connecting pipe. The other end of the liquid injection pipe is fixedly connected with a spray head. A water pump is further arranged outside the spray tower. A graphite condenser is arranged between the water pump and the spray tower. The bottom end of the second connecting pipe is fixedly connected with one side of the graphite condenser. A first connecting pipe is fixedly connected between the other side of the graphite condenser and the output end of the water pump.

[0008] A pressurizing component is arranged inside the liquid injection pipe located above, and a power component matched with the pressurizing component is arranged on the outer wall of the spray tower.

[0009] Preferably, the barrier is composed of three baffles distributed in sequence up and down, wherein the top and bottom two baffles are inclined downward from left to right and are both fixed on one side wall of the spray tower, and the baffle located in the middle is inclined downward from right to left and is fixed on the other side wall of the spray tower, and the two injection pipes are respectively located at the upper and lower parts of the middle baffle.

[0010] Preferably, the boost component includes a bracket vertically fixed on the inner side of the injection tube, a transmission rod vertically rotatably arranged on a side of the bracket facing the second connecting tube, and an impeller tightly sleeved on the body of the transmission rod.

[0011] Preferably, the power component includes a connecting rod arranged on the outside of the upper injection tube, one end of the connecting rod is rotated to penetrate into the upper injection tube and is fixed with a worm, and a worm wheel meshing with the worm is fastened and sleeved on the rod body of the transmission rod.

[0012] Preferably, the power component further comprises a mounting plate fixed on the outer wall of the spray tower and a motor mounted on the side of the mounting plate, and a transmission belt is connected between the output shaft of the motor and the other end of the connecting rod.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] (1) By setting up the barrier and the spray mechanism, the barrier composed of three groups of baffles is used to make the hydrochloric acid tail gas flow in an S-shaped manner from bottom to top in the inner cavity of the spray tower, which effectively prolongs the residence time of the tail gas in the inner cavity of the spray tower. In addition, during the S-shaped flow of the hydrochloric acid tail gas, the two brackets at the upper and lower parts of the middle baffle can spray and degrade the tail gas twice, thereby effectively improving the spray degradation effect of the hydrochloric acid tail gas and making the hydrochloric acid tail gas treatment more sufficient.

[0015] (2) Through the setting of the graphite condenser, when the water pump is turned on to transport the absorption liquid to the second connecting pipe and the injection pipe, the absorption liquid can flow through the inside of the graphite condenser on the way, and then the graphite condenser will pre-cool the absorption liquid, so that the absorption liquid can be sprayed with hydrochloric acid in the inner cavity of the spray tower at a low temperature, thereby enhancing the exhaust gas absorption effect.

[0016] (3) By setting up the boosting component, during the process of the absorption liquid being injected from the second connecting pipe into the inner cavity of the injection pipe, the transmission rod in the boosting component carries the impeller to rotate continuously, thereby increasing the water pressure inside the upper injection pipe and improving the flow rate inside the injection pipe, so that the flow rates inside the upper and lower injection pipes are balanced, so as to avoid the water flow rate in the upper injection pipe being reduced due to the height difference, thereby affecting the spraying effect of the upper bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 This is a schematic diagram of the external structure of the spray tower of the present utility model;

[0019] Figure 3 This is the present utility model Figure 2 Schematic diagram of the structure at position A in;

[0020] Figure 4 This is a schematic diagram of the internal structure of the spray tower of the present utility model;

[0021] Figure 5 This is the present utility model Figure 4 Schematic diagram of the structure at position B in.

[0022] The reference numerals in the figure are:

[0023] 1. Spray tower; 2. Liquid outlet pipe; 3. Air inlet pipe; 4. Exhaust pipe; 5. Graphite condenser; 6. Water pump; 7. First connecting pipe; 8. Second connecting pipe; 9. Baffle plate; 10. Nozzle; 11. Liquid injection pipe; 12. Support; 13. Transmission rod; 14. Impeller; 15. Worm gear; 16. Mounting plate; 17. Motor; 18. Connecting rod; 19. Transmission belt; 20. Worm. Specific embodiments

[0024] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0025] Referring to Figure 1 、 Figure 2 And Figure 3 As shown, a hydrochloric acid tail gas treatment device includes a spray tower 1, a liquid outlet pipe 2 provided at the bottom end of the spray tower 1, an exhaust pipe 4 provided at the top of the spray tower 1, and an air inlet pipe 3 provided at the bottom of one side wall of the spray tower 1. A spray mechanism is provided on the other side of the spray tower 1;

[0026] The hydrochloric acid tail gas is introduced into the inner cavity of the spray tower 1 through the air inlet pipe 3, so that the hydrochloric acid tail gas flows upward in the inner cavity of the spray tower 1 and is discharged to the outside through the exhaust pipe 4. During this period, the spray mechanism sprays the hydrochloric acid tail gas in the inner cavity of the spray tower 1, so that the hydrochloric acid tail gas is dissolved in water under the spraying of the absorption liquid to form hydrochloric acid, thereby achieving a good purification effect on the hydrochloric acid tail gas.

[0027] Further, referring to Figure 1As shown, it is worth noting that the spraying mechanism includes a second connecting pipe 8 arranged outside the spraying tower 1. There are two liquid injection pipes 11 arranged in the inner cavity of the spraying tower 1. One end of the liquid injection pipe 11 passes through the spraying tower 1 and is fixedly connected to the body of the second connecting pipe 8. The other end of the liquid injection pipe 11 is fixedly connected to a spray head 10;

[0028] A barrier member cooperating with the spraying mechanism is arranged in the inner cavity of the spraying tower 1. The barrier member is composed of three partition plates 9 arranged vertically in sequence. Among them, the two upper and lower partition plates 9 are inclined downward from left to right and are both fixed on one side wall of the spraying tower 1. The middle partition plate 9 is inclined downward from right to left and is fixed on the other side wall of the spraying tower 1. The two liquid injection pipes 11 are respectively located at the upper and lower parts of the middle partition plate 9;

[0029] Through the arrangement of the barrier member and the spraying mechanism, by using the barrier member composed of three groups of partition plates 9, the hydrochloric acid tail gas makes an S-shaped flow from bottom to top in the inner cavity of the spraying tower 1, effectively lengthening the residence time of the tail gas in the inner cavity of the spraying tower 1. And during the S-shaped flow of the hydrochloric acid tail gas, the two brackets 12 at the upper and lower parts of the middle partition plate 9 can spray and degrade the tail gas twice, thereby effectively improving the spraying and degradation effect of the hydrochloric acid tail gas and making the treatment of the hydrochloric acid tail gas more thorough.

[0030] Furthermore, referring to Figure 1 and Figure 4 As shown, it is worth noting that a water pump 6 is also arranged outside the spraying tower 1. A graphite condenser 5 is arranged between the water pump 6 and the spraying tower 1. The bottom end of the second connecting pipe 8 is fixedly connected to one side of the graphite condenser 5. A first connecting pipe 7 is fixedly connected between the other side of the graphite condenser 5 and the output end of the water pump 6;

[0031] Through the arrangement of the graphite condenser 5, during the process of turning on the water pump 6 and transporting the absorption liquid into the second connecting pipe 8, the liquid injection pipe 11 and the bracket 12, the absorption liquid can flow through the inside of the graphite condenser 5 on the way. Then the graphite condenser 5 pre-cools the absorption liquid, so that the absorption liquid sprays hydrochloric acid in the inner cavity of the spraying tower 1 at a low temperature, enhancing the tail gas absorption effect.

[0032] Furthermore, referring to Figure 4 and Figure 5 As shown, it is worth noting that a pressurizing component is arranged inside the upper liquid injection pipe 11, and a power component cooperating with the pressurizing component is arranged on the outer wall of the spraying tower 1;

[0033] The pressurizing component includes a bracket 12 vertically fixed inside the liquid injection pipe 11, a transmission rod 13 vertically and rotatably arranged on the side surface of the bracket 12 facing the second connecting pipe 8, and an impeller 14 tightly sleeved on the rod body of the transmission rod 13;

[0034] By setting the boosting component, during the process of the absorption liquid being injected into the inner cavity of the injection pipe 11 from the second connecting pipe 8, the transmission rod 13 in the boosting component carries the impeller 14 to continuously rotate, thereby increasing the water pressure inside the upper injection pipe 11 and improving the flow rate inside the injection pipe 11, so that the flow rates inside the upper and lower injection pipes 11 are balanced, so as to prevent the water flow rate of the upper injection pipe 11 from being reduced due to the height difference, thereby affecting the spraying effect of the upper bracket 12.

[0035] Further, refer to Figure 3 and Figure 5 As shown, it is worth noting that the power component includes a connecting rod 18 arranged outside the upper injection pipe 11, one end of the connecting rod 18 rotates to penetrate into the upper injection pipe 11 and is fixed with a worm 20, and a worm wheel 15 meshing with the worm 20 is fastened and sleeved on the rod body of the transmission rod 13;

[0036] The power component also includes a mounting plate 16 fixed on the outer wall of the spray tower 1 and a motor 17 mounted on the side of the mounting plate 16, and a transmission belt 19 is connected between the output shaft of the motor 17 and the other end of the connecting rod 18;

[0037] The motor 17 is turned on, and the output shaft of the motor 17 drives the connecting rod 18 through the transmission belt 19, so that the worm 20 continues to rotate in the inner cavity of the injection tube 11 and meshes with the worm wheel 15, and then the transmission rod 13 is forced to carry the impeller 14 to rotate.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydrochloric acid tail gas treatment device, comprising a spray tower (1), a liquid outlet pipe (2) arranged at the bottom end of the spray tower (1), an exhaust pipe (4) arranged at the top of the spray tower (1), and an intake pipe (3) arranged at the bottom of one side wall of the spray tower (1), characterized in that, A spray mechanism is arranged on the other side of the spray tower (1), and a barrier member cooperating with the spray mechanism is arranged in the inner cavity of the spray tower (1); The spray mechanism comprises a second connecting pipe (8) arranged outside the spray tower (1); the inner cavity of the spray tower (1) is provided with two injection pipes (11); one end of the injection pipe (11) passes through the spray tower (1) and is fixedly connected to the body of the second connecting pipe (8); the other end of the injection pipe (11) is fixedly connected to a spray head (10); a water pump (6) is also arranged outside the spray tower (1); a graphite condenser (5) is arranged between the water pump (6) and the spray tower (1); the bottom end of the second connecting pipe (8) is fixedly connected to one side of the graphite condenser (5); the other side of the graphite condenser (5) is fixedly connected to the output end of the water pump (6) by a first connecting pipe (7); A pressurizing component is arranged inside the liquid injection pipe (11) located at the top, and a power component cooperating with the pressurizing component is arranged on the outer wall of the spray tower (1).

2. The hydrochloric acid tail gas treatment device according to claim 1, wherein, The barrier is composed of three baffles (9) distributed in sequence up and down, wherein the top and bottom two baffles (9) are inclined downward from left to right and are both fixed on one side wall of the spray tower (1), while the baffle (9) located in the middle is inclined downward from right to left and is fixed on the other side wall of the spray tower (1), and the two injection pipes (11) are respectively located at the upper and lower parts of the baffle (9) in the middle.

3. The hydrochloric acid tail gas treatment device according to claim 1, characterized in that, The pressurizing component comprises a bracket (12) vertically fixed inside the injection pipe (11), a transmission rod (13) vertically rotatably arranged on a side of the bracket (12) facing the second connecting pipe (8), and an impeller (14) tightly sleeved on the body of the transmission rod (13).

4. The hydrochloric acid tail gas treatment device according to claim 3, characterized in that, The power component comprises a connecting rod (18) arranged on the outside of the upper injection tube (11); one end of the connecting rod (18) is rotatably inserted into the upper injection tube (11) and fixed with a worm (20); and a worm wheel (15) meshing with the worm (20) is tightly sleeved on the rod body of the transmission rod (13).

5. The hydrochloric acid tail gas treatment device according to claim 4, characterized in that, The power component also includes a mounting plate (16) fixed on the outer wall of the spray tower (1) and a motor (17) mounted on the side of the mounting plate (16), and a transmission belt (19) is connected between the output shaft of the motor (17) and the other end of the connecting rod (18).

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