Ammonia flue gas desulfurization device for aerosol

Abstract

The utility model relates to the technical field of ammonia flue gas desulfurization, in particular to an ammonia flue gas desulfurization device for aerosol. The ammonia flue gas desulfurization device for the aerosol comprises a desulfurization tower body, a first spiral pipe, a second spiral pipe and a third spiral pipe are arranged in the desulfurization tower body, and the three groups of spiral pipes are matched with one another, so that flue gas can be directly subjected to desulfurization and oxidation reaction in the spiral pipes; the situation that smoke cannot fully react with ammonia liquid and oxygen due to the fact that the smoke diffusion area is large is avoided, the smoke is limited in the spiral pipe to react, the ammonia liquid and the oxygen can make direct contact with the smoke when being sprayed out, and therefore the smoke treatment efficiency is improved; the moving time of the flue gas in the pipe can be prolonged, so that the flue gas can be in contact with ammonia liquid and oxygen for a longer time, and the desulfurization and oxidation effects of the flue gas are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ammonia method flue gas desulfurization technical field, specifically a kind of ammonia method flue gas desulfurization device of aerosol. BACKGROUND

[0002] Ammonia method flue gas desulfurization tower uses liquid ammonia or waste ammonia water as absorbent, it is very easy to react with sulfur dioxide in flue gas, desulfurization efficiency is high, ammonium sulfite generated by the reaction of oxygen is very easy to dissolve in water, overall system is not easy to scale is the desulfurization mode generally used at present stage.

[0003] In the existing ammonia desulfurization, ammonia water is sprayed out through spray pipe to contact with flue gas to generate ammonium sulfite, then oxygen is introduced by oxidation fan or oxidizing agent is added to generate ammonium sulfate by oxidation, ammonium sulfate is passed through, to avoid the decomposition of sulfite to generate SO2 and NH3, so as to inhibit aerosol formation. But the existing reaction device, flue gas is easy to diffuse directly, after diffusion, the area occupied by flue gas is larger, not easy to contact with ammonia water, the reaction efficiency is lower, the reaction is insufficient, and sulfur dioxide is easy to be missed, the existing air distribution pipe is not uniform after oxygen is introduced, so that oxygen and generated ammonium sulfite are not fully reacted, in view of the above situation, technical innovation is carried out on the basis of the existing ammonia method flue gas desulfurization device of aerosol. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of ammonia method flue gas desulfurization device of aerosol to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of ammonia method flue gas desulfurization device of aerosol, comprising:

[0006] Desulfurization tower body, the inside of the desulfurization tower body is provided with first spiral pipe, second spiral pipe and third spiral pipe, the third spiral pipe is located at the outer circle of first spiral pipe, the first spiral pipe is located at the outer circle of second spiral pipe, the side close to first spiral pipe of second spiral pipe is uniformly communicated with first nozzle, the side close to first spiral pipe of third spiral pipe is uniformly communicated with second nozzle, the nozzle of first nozzle and second nozzle all penetrates the outside of first spiral pipe, and is located in the inside of first spiral pipe, the bottom of first spiral pipe is communicated with drain pipe, the inside wall bottom of the smoke inlet of first spiral pipe is provided with guide block, the guide block is located at the left side of the communication of first spiral pipe and drain pipe.

[0007] Preferably, the left side of the desulfurization tower body is provided with inlet pipe, the inlet pipe penetrates the left side of desulfurization tower body and is communicated with the smoke inlet of first spiral pipe, a one-way valve is arranged in the inlet pipe.

[0008] Preferably, the bottom of the desulfurization tower body is provided with a tower base, a waste liquid pool is formed in the inside of the tower base, and the bottom of the liquid discharge pipe penetrates through the bottom of the desulfurization tower body and the top of the tower base and communicates with the waste liquid pool.

[0009] Preferably, the right side of the tower base is provided with a valve, and the valve penetrates through the right side of the tower base and communicates with the waste liquid pool.

[0010] Preferably, the right side of the desulfurization tower body is provided with an air inlet pipe and a liquid inlet pipe, and the air inlet pipe is located above the liquid inlet pipe.

[0011] Preferably, the air inlet pipe penetrates through the right side of the desulfurization tower body and communicates with the second spiral pipe, and the liquid inlet pipe penetrates through the right side of the desulfurization tower body and communicates with the third spiral pipe.

[0012] Compared with the prior art, the desulfurization device has the following beneficial effects:

[0013] The three spiral pipes cooperate with each other, so that the flue gas directly performs desulfurization and oxidation reaction in the spiral pipes, prevents the flue gas from being unable to fully react with the ammonia liquid and oxygen due to a large flue gas diffusion area, limits the flue gas in the spiral pipes for reaction, enables the ammonia liquid and oxygen to directly contact the flue gas when being sprayed, improves flue gas treatment efficiency, and through the spiral pipe design, the moving time of the flue gas in the pipe is increased, so that the flue gas can be in contact with the ammonia liquid and oxygen for a longer time, and the desulfurization and oxidation effect of the flue gas is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the aerosol ammonia method flue gas desulfurization device;

[0015] Fig. 2 It is a left side view of the aerosol ammonia method flue gas desulfurization device;

[0016] Fig. 3 It is a front partial sectional view of the aerosol ammonia method flue gas desulfurization device.

[0017] In the drawing: 1, desulfurization tower body; 11, tower base; 12, smoke inlet pipe; 13, air inlet pipe; 14, liquid inlet pipe; 15, valve; 16, first spiral pipe; 17, second spiral pipe; 18, third spiral pipe; 2, first nozzle; 21, second nozzle; 22, one-way valve; 23, guide block; 24, liquid discharge pipe. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figs. 1-3The utility model provides an ammonia method flue gas desulfurization device of aerosol, including desulfurization tower body 1, the inside fixed setting of desulfurization tower body 1 has first spiral pipe 16, second spiral pipe 17 and third spiral pipe 18, third spiral pipe 18 is located the outer ring of first spiral pipe 16, first spiral pipe 16 is located the outer ring of second spiral pipe 17, and the first spiral pipe 16 one side close to second spiral pipe 17 evenly has first nozzle 2, and third spiral pipe 18 one side close to first spiral pipe 16 evenly has second nozzle 21, and the spout of first nozzle 2 and second nozzle 21 all penetrates the outside of first spiral pipe 16, and is located inside first spiral pipe 16, and the bottom of first spiral pipe 16 is connected with drain pipe 24, and the inside wall bottom of first spiral pipe 16 inlet is fixedly provided with guide block 23, and the flue gas in the input first spiral pipe 16 is guided through guide block 23, so that the flue gas can cross the communication of drain pipe 24 and first spiral pipe 16 and directly enter first spiral pipe 16, when the flue gas spirally floats upwards along first spiral pipe 16, the ammonia liquid in third spiral pipe 18 will be evenly sprayed into first spiral pipe 16 through multiple second nozzles 21, so as to react with the ammonium sulfite generated in the flue gas in first spiral pipe 16 to generate ammonium sulfate, and then the oxygen in second spiral pipe 17 will be evenly sprayed into first spiral pipe 16 through multiple first nozzles 2, and react with ammonium sulfite to generate ammonium sulfate, so as to play the effect of flue gas desulfurization and aerosol formation inhibition, guide block 23 is located at the left side of the communication of first spiral pipe 16 and drain pipe 24, the left side of desulfurization tower body 1 is fixedly provided with inlet pipe 12, inlet pipe 12 penetrates the left side of desulfurization tower body 1 and is connected with the flue gas inlet of first spiral pipe 16, one-way valve 22 is fixedly arranged in inlet pipe 12, the flue gas is input into first spiral pipe 16 through inlet pipe 12, and the flue gas backflow is prevented through one-way valve 22, the bottom of desulfurization tower body 1 is fixedly provided with tower base 11, the inside of tower base 11 is provided with waste liquid pool, the bottom of drain pipe 24 penetrates the bottom of desulfurization tower body 1 and the top of tower base 11 and is connected with waste liquid pool, the right side of tower base 11 is fixedly provided with valve 15, valve 15 penetrates the right side of tower base 11 and is connected with waste liquid pool, the generated ammonium sulfate in first spiral pipe 16 and the excess ammonia liquid will flow downwards along first spiral pipe 16, and under the block of guide block 23, the ammonium sulfate and the excess ammonia liquid will enter drain pipe 24 through the communication of first spiral pipe 16 and drain pipe 24 and enter waste liquid pool along drain pipe 24, after opening valve 15, the waste liquid in waste liquid pool can be discharged, the right side of desulfurization tower body 1 is fixedly provided with inlet pipe 13 and liquid inlet pipe 14, inlet pipe 13 is connected with external oxidation fan, and provides oxygen for second spiral pipe 17 through oxidation fan, liquid inlet pipe 14 is connected with the pump of external ammonia liquid tank, so as to provide ammonia liquid for third spiral pipe 18, inlet pipe 13 is located above liquid inlet pipe 14, inlet pipe 13 penetrates the right side of desulfurization tower body 1 and is connected with second spiral pipe 17,The liquid inlet pipe 14 is connected with the third spiral pipe 18 through the right side of the desulfurization tower body 1.

[0020] Working principle: The air inlet pipe 13 is connected with the external oxidation fan, and the second spiral pipe 17 is provided with oxygen through the oxidation fan. The liquid inlet pipe 14 is connected with the pump on the external ammonia liquid tank, and the third spiral pipe 18 is provided with ammonia liquid. The flue gas is input into the first spiral pipe 16 through the flue gas inlet pipe 12, and the flue gas backflow is prevented through the one-way valve 22. The flue gas input into the first spiral pipe 16 is guided through the guide block 23, so that the flue gas can directly enter the first spiral pipe 16 through the communication between the liquid outlet pipe 24 and the first spiral pipe 16. When the flue gas flows upwards along the first spiral pipe 16, the ammonia liquid in the third spiral pipe 18 is uniformly sprayed into the first spiral pipe 16 through a plurality of second nozzles 21, so as to react with the sulfur dioxide in the flue gas in the first spiral pipe 16 to generate ammonium sulfite. Then, the oxygen in the second spiral pipe 17 is uniformly sprayed into the first spiral pipe 16 through a plurality of first nozzles 2, so as to react with the ammonium sulfite to generate ammonium sulfate, thereby achieving the effects of flue gas desulfurization and aerosol formation inhibition. The generated ammonium sulfate and excess ammonia liquid in the first spiral pipe 16 flow downwards along the first spiral pipe 16, and are blocked by the guide block 23. The ammonium sulfate and excess ammonia liquid enter the liquid outlet pipe 24 through the communication between the first spiral pipe 16 and the liquid outlet pipe 24, and flow into the waste liquid pool along the liquid outlet pipe 24. After the valve 15 is opened, the waste liquid in the waste liquid pool can be discharged.

Claims

1. An ammonia process flue gas desulfurization device of an aerosol, characterized by, Include: Desulfurization tower body (1), the inside of the desulfurization tower body (1) is provided with a first spiral pipe (16), a second spiral pipe (17) and a third spiral pipe (18), the third spiral pipe (18) is located in the outer ring of the first spiral pipe (16), the first spiral pipe (16) is located in the outer ring of the second spiral pipe (17), the second spiral pipe (17) is uniformly communicated with the first nozzle (2) on the side close to the first spiral pipe (16), the third spiral pipe (18) is uniformly communicated with the second nozzle (21) on the side close to the first spiral pipe (16), the nozzle of the first nozzle (2) and the second nozzle (21) penetrates the outside of the first spiral pipe (16) and is located in the first spiral pipe (16), the bottom of the first spiral pipe (16) is communicated with a drain pipe (24), the inner side wall bottom of the smoke inlet of the first spiral pipe (16) is provided with a guide block (23), the guide block (23) is located on the left side of the communication between the first spiral pipe (16) and the drain pipe (24).

2. An ammonia process flue gas desulphurization apparatus for aerosols according to claim 1, characterized in that: The left side of the desulfurization tower body (1) is provided with an inlet pipe (12), the inlet pipe (12) penetrates the left side of the desulfurization tower body (1) and is communicated with the smoke inlet of the first spiral pipe (16), the inlet pipe (12) is provided with a check valve (22) inside.

3. An ammonia process flue gas desulfurization device of an aerosol according to claim 1, characterized in that: The bottom of the desulfurization tower body (1) is provided with a tower seat (11), a waste liquid pool is formed in the inside of the tower seat (11), the bottom of the drain pipe (24) penetrates the bottom of the desulfurization tower body (1) and the top of the tower seat (11) and is communicated with the waste liquid pool.

4. An ammonia process flue gas desulphurization apparatus for aerosols according to claim 3, characterized in that: The right side of the tower seat (11) is provided with a valve (15), the valve (15) penetrates the right side of the tower seat (11) and is communicated with the waste liquid pool.

5. An ammonia process flue gas desulfurization apparatus for aerosol according to claim 1, characterized in that: The right side of the desulfurization tower body (1) is provided with an air inlet pipe (13) and a liquid inlet pipe (14), the air inlet pipe (13) is located above the liquid inlet pipe (14).

6. An ammonia process flue gas desulphurization apparatus for aerosols according to claim 5, characterized in that: The air inlet pipe (13) penetrates the right side of the desulfurization tower body (1) and is communicated with the second spiral pipe (17), the liquid inlet pipe (14) penetrates the right side of the desulfurization tower body (1) and is communicated with the third spiral pipe (18).

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