Environment-friendly flue gas desulfurization device for metallurgical industry

Abstract

The utility model discloses an environment-friendly flue gas desulfurization device for metallurgical industry, which comprises a desulfurization tower main body, a flue gas inlet pipe arranged on the side wall of the desulfurization tower main body, an exhaust pipe arranged at the top end of the desulfurization tower main body, a spraying assembly arranged inside the desulfurization tower main body, and a mixing assembly arranged on one side of the desulfurization tower main body and matched with the spraying assembly, a filler layer is arranged below the spraying assembly in the desulfurizing tower main body through a clamping assembly, the end part of the filler layer is connected with the side wall of the desulfurizing tower main body through a positioning mechanism, and a liquid storage cavity matched with the spraying assembly is formed in the bottom end of the desulfurizing tower main body. The device has the beneficial effects that the device can be used for mounting and fixing a filler layer, ensures the stability during desulfurization, does not influence normal use, can be used for conveniently taking out the filler layer after being used for a period of time, is convenient to clean or replace, avoids blockage or damage, and does not influence normal use of desulfurization.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flue gas desulfurization, specifically, relate to a kind of environmental protection flue gas desulfurization device for metallurgical industry. BACKGROUND

[0002] The environmental protection flue gas desulfurization device for metallurgical industry refers to the device using physical or chemical method to remove sulfur dioxide in flue gas generated in metallurgical production process.It usually includes desulfurization tower and supporting various auxiliary equipment, instrument, pipeline, building (structure) etc.Common desulfurization technology has wet limestone / gypsum method, ammonia method, sodium alkali method, activated coke method, organic solvent method etc.These devices convert SO2 in flue gas into harmless or recyclable material through different process principles, thereby reducing air pollution, wherein wet limestone method uses the way of spraying to contact reaction with flue gas, to achieve the purpose of removal.

[0003] However, the existing flue gas desulfurization device has certain defects in actual use, in order to improve the effect of desulfurization, part of desulfurization tower inside will be equipped with filler layer, improve the effect of desulfurization, but after long time use, filler layer is prone to blockage or damage, not for cleaning or replacing, affect desulfurization use. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of environmental protection flue gas desulfurization device for metallurgical industry to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of environmental protection flue gas desulfurization device for metallurgical industry, including desulfurization tower main body, flue gas inlet pipe is equipped on the side wall of desulfurization tower main body, exhaust pipe is equipped at the top of desulfurization tower main body, spraying assembly is equipped in the inside of desulfurization tower main body, the side of desulfurization tower main body is equipped with the mixing assembly matched with spraying assembly, filler layer is equipped in the inside of desulfurization tower main body below spraying assembly by engaging assembly, the end of filler layer is connected with the side wall of desulfurization tower main body by positioning mechanism, desulfurization tower main body bottom end is equipped with the liquid storage cavity matched with spraying assembly.

[0007] Further, in order to spray limestone slurry conveniently, for carrying out desulfurization operation, spraying assembly includes annular pipe arranged in the inside of desulfurization tower main body, nozzle is equidistantly arranged below annular pipe, one end of annular pipe is equipped with connecting pipe, connecting pipe penetrates desulfurization tower main body and is connected with mixing assembly.

[0008] Further, in order to mix and stir the limestone slurry, ensure uniform mixing, and not affect subsequent use, the mixing assembly includes a mixing box connected to the connecting pipe, a motor is arranged in the middle of the mixing box, a rotating shaft is fixedly arranged at the output end of the motor, the rotating shaft penetrates through the mixing box and extends to the inside to equidistantly arrange a mixing rod, and a feeding pipe is further arranged on one side of the top end of the mixing box.

[0009] Further, in order to facilitate the installation and clamping of the filler layer, the clamping assembly includes clamping plates symmetrically arranged on the inner wall of the desulfurization tower body, and clamping grooves matched with the filler layer are formed in the side walls of the clamping plates.

[0010] Further, in order to facilitate positioning and sealing after installation, without affecting subsequent use, the positioning mechanism includes a pull plate fixedly connected to the end of the filler layer, an empty slot matched with the pull plate is formed in the side wall of the desulfurization tower body, and a pull slot is formed in the middle of the side wall of the pull plate.

[0011] Further, in order to facilitate positioning and sealing after installation, without affecting subsequent use, the positioning mechanism further includes an inflatable sealing bag arranged on the side surface of the pull plate, a positioning groove matched with the inflatable sealing bag is formed in the inner wall of the empty slot, and a gas charging and discharging pipe is symmetrically arranged at one end of the inflatable sealing bag and penetrates through the pull plate and extends to the outside.

[0012] Further, in order to facilitate the sealing and protection of the gas charging and discharging pipe, sealing plugs are arranged at the ends of the gas charging and discharging pipe.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The clamping assembly cooperates with the positioning mechanism to facilitate the installation and fixation of the filler layer, ensure the stability during desulfurization, and do not affect normal use.

[0015] The mixing assembly facilitates the mixing of the limestone slurry, ensures sufficient and uniform mixing, and cooperates with the spraying assembly to spray the limestone slurry, which cooperates with the filler layer to fully contact with the flue gas and fully contact and react with sulfur dioxide, ensuring sufficient and complete desulfurization and avoiding the emission of sulfur dioxide in the flue gas to the outside. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a structural schematic view of an environmental protection flue gas desulfurization device for metallurgical industry according to an embodiment of the present application;

[0018] Figure 2 is a structural schematic view of a desulfurization tower main body in an environmental protection flue gas desulfurization device for metallurgical industry according to an embodiment of the present application;

[0019] Figure 3 is an internal partial structural schematic view of a desulfurization tower main body in an environmental protection flue gas desulfurization device for metallurgical industry according to an embodiment of the present application;

[0020] Figure 4 is a structural schematic view of a filler layer and a positioning mechanism in an environmental protection flue gas desulfurization device for metallurgical industry according to an embodiment of the present application;

[0021] Figure 5 is a structural schematic view of a mixing assembly in an environmental protection flue gas desulfurization device for metallurgical industry according to an embodiment of the present application.

[0022] Reference signs:

[0023] 1, desulfurization tower main body; 2, flue gas inlet pipe; 3, liquid storage cavity; 4, mixing box; 5, exhaust pipe; 6, motor; 7, feeding pipe; 8, connecting pipe; 9, annular pipe; 10, spray head; 11, filler layer; 12, clamping plate; 13, positioning groove; 14, pull plate; 15, clamping groove; 16, inflatable sealing bag; 17, inflation and deflation pipe; 18, sealing plug; 19, pull groove; 20, rotating shaft; 21, mixing rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-5The utility model discloses a kind of environmental protection flue gas desulfurization devices for metallurgical industry, including desulfurization tower main body 1, flue gas inlet pipe 2 (part diagram in drawing) is installed on the sidewall of desulfurization tower main body 1, flue gas inlet pipe 2 is used to pass into the desulfurization tower main body 1 and carry out desulfurization treatment to the flue gas generated by metallurgy, exhaust pipe 5 is installed at the top of desulfurization tower main body 1, exhaust pipe 5 is used to discharge after desulfurization, and then discharge after purification, relatively mature technology, not do here, desulfurization tower main body 1 bottom end is equipped with liquid storage cavity 3, in limestone slurry is sprayed into absorption tower and contacts with flue gas containing SO2, chemical reaction occurs to generate calcium sulfite and gypsum, at this time, liquid storage cavity 3 temporarily stores calcium sulfite and gypsum, and final product can be recycled, annular pipe 9 of spray assembly is installed in desulfurization tower main body 1, annular pipe 9 is installed with equal interval below nozzle 10, nozzle 10 is used to mix limestone slurry and contact reaction with flue gas, and desulfurization operation is carried out, one end of annular pipe 9 is equipped with connecting pipe 8, connecting pipe 8 penetrates desulfurization tower main body 1 and extends to outside and is connected with mixing box 4 of mixing assembly, and material pump (not shown in drawing) is installed on connecting pipe 8, for extracting and spraying mixed limestone slurry, mixing box 4 top end is equipped with material adding pipe 7 for adding material, mixing box 4 top end middle part is fixedly installed (through mounting bracket, not shown in drawing) with motor 6 of mixing assembly, motor 6 output end is fixedly connected with rotating shaft 20 through coupling, rotating shaft 20 penetrates mixing box 4 and extends to inside and is installed with mixing rod 21 (also can be mixing blade) with equal interval, can be used to mix and stir limestone slurry, and then extract and spray, in turn flue gas can be desulfurized.

[0026] Please refer to Figures 1-5To increase the contact surface area, allowing for more thorough contact between the gas and liquid, and to promote turbulence in the airflow, enhancing the disturbance and mixing between the gas and liquid phases, thus accelerating mass transfer and ensuring a more complete reaction and effective desulfurization, a packing layer 11 is installed inside the desulfurization tower body 1. For installation and subsequent disassembly, and to facilitate cleaning or replacement after disassembly, damage or blockage can be avoided, ensuring the desulfurization effect. A locking plate 12 with a locking assembly is adhered to the inner wall of the desulfurization tower body 1. The side wall of the locking plate 12 has a locking groove 15 for inserting the packing layer 11. A positioning mechanism pull plate 14 is adhered to the end of the packing layer 11. A connection between the pull plate and the end of the packing layer 11 is provided on the side wall of the desulfurization tower body 1. To ensure a tight seal after installation, an inflatable sealing bladder 16 is bonded to the side of the pull plate 14. A positioning groove 13 is correspondingly provided on the inner wall of the slot (a sealing gasket can be bonded inside to ensure a tight seal with the inflatable sealing bladder 16). An inflation / deflation tube 17 is symmetrically installed at one end of the inflatable sealing bladder 16 (the principle is the same as the valve core of a tire, a relatively mature technology, which will not be described in detail here). The inflation / deflation tube 17 passes through the clamping plate 12 and extends to the outside (it can be inflated by a micro air pump or air pump, etc.). The end of the inflation / deflation tube 17 can be threaded with a sealing plug 18, which can be easily sealed after inflation and also provides protection. To facilitate push-pull operation, a pull groove 19 is provided in the middle of the side wall of the pull plate 14.

[0027] In order to understand the above-mentioned technical solution of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0028] In summary, by means of the above technical scheme of the utility model, the material is added through the material adding pipe 7, then the motor 6 works, the rotating shaft 20 and the mixing rod 21 rotate, the limestone slurry can be mixed and stirred, then the material pump (not shown in the figure) draws the material to the inside of the annular pipe 9 through the connecting pipe 8, the material is sprayed through the spray head 10, the flue gas generated in the metallurgical process is introduced into the inside of the desulfurization tower main body 1 through the flue gas inlet pipe 2, the gas and the liquid can be more fully contacted by cooperating with the filler layer 11, the gas-liquid contact on the whole tower cross section is as uniform as possible, so that the treatment effect is improved, the gas stays in the tower for a longer time, the opportunity of gas-liquid contact is increased, the calcium sulfite and gypsum generated by the full contact reaction are ensured, the flue gas can be desulfurized, the reactants are temporarily stored in the liquid storage cavity 3 for subsequent unified collection and treatment, the flue gas after desulfurization is discharged through the exhaust pipe 5 for subsequent purification operation, and is discharged after reaching the discharge standard, when the filler layer 11 needs to be cleaned or replaced, the sealing plug 18 is unscrewed, the inflation sealing bag 16 is deflated through the inflation and deflation pipe 17, the positioning and sealing with the positioning groove 13 is lost, then the pull groove 19 is pulled, the pull plate 14 and the filler layer 11 can be pulled out from the clamping groove 15 of the clamping plate 12 for cleaning or replacement operation, when installation, the pull plate 14 and the filler layer 11 are inserted into the clamping groove 15 of the clamping plate 12, then the inflation sealing bag 16 is inflated through the inflation and deflation pipe 17, the positioning and sealing with the positioning groove 13 are cooperated, then the sealing plug 18 is screwed, and the use of desulfurization treatment is not affected.

[0029] The above merely describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An environmentally friendly flue gas desulphurization device for the metallurgical industry, comprising a desulphurization tower body (1), characterized in that: The flue gas inlet pipe (2) is arranged on the sidewall of the desulfurization tower body (1), the exhaust pipe (5) is arranged at the top end of the desulfurization tower body (1), the spray assembly is arranged in the desulfurization tower body (1), the mixing assembly matched with the spray assembly is arranged on one side of the desulfurization tower body (1), the filler layer (11) is arranged below the spray assembly in the desulfurization tower body (1) through the clamping assembly, the end of the filler layer (11) is connected with the sidewall of the desulfurization tower body (1) through the positioning mechanism, and the liquid storage cavity (3) matched with the spray assembly is arranged at the bottom end of the desulfurization tower body (1).

2. An environmentally friendly flue gas desulphurization device for the metallurgical industry as claimed in claim 1, wherein: The spray assembly comprises the annular pipe (9) arranged in the desulfurization tower body (1), the spray heads (10) are equidistantly arranged below the annular pipe (9), one end of the annular pipe (9) is provided with the connecting pipe (8), and the connecting pipe (8) penetrates the desulfurization tower body (1) and is connected with the mixing assembly.

3. An environmentally friendly flue gas desulphurization device for the metallurgical industry, according to claim 2, characterized in that: The mixing assembly comprises the mixing box (4) connected with the connecting pipe (8), the motor (6) is arranged in the middle of the mixing box (4), the output end of the motor (6) is fixedly provided with the rotating shaft (20), the rotating shaft (20) penetrates the mixing box (4) and extends to the inside and is equidistantly provided with the mixing rods (21), and the feeding pipe (7) is arranged on one side of the top end of the mixing box (4).

4. An environmentally friendly flue gas desulphurization device for the metallurgical industry, according to claim 3, characterized in that: The clamping assembly comprises the clamping plates (12) symmetrically arranged on the inner wall of the desulfurization tower body (1), and the clamping grooves (15) matched with the filler layer (11) are formed in the sidewall of the clamping plates (12).

5. An environmentally friendly flue gas desulphurization device for the metallurgical industry, according to claim 4, characterized in that: The positioning mechanism comprises the pull plate (14) fixedly connected with the end of the filler layer (11), the air slot matched with the pull plate (14) is formed in the sidewall of the desulfurization tower body (1), and the pull slot (19) is formed in the middle of the sidewall of the pull plate (14).

6. An environmentally friendly flue gas desulphurization device for the metallurgical industry, according to claim 5, characterized in that: The positioning mechanism further comprises the air charging sealing bag (16) arranged on the circumferential surface of the pull plate (14), the positioning grooves (13) matched with the air charging sealing bag (16) are formed in the inner wall of the air slot, one end of the air charging sealing bag (16) is symmetrically provided with the air charging and discharging pipe (17), and the air charging and discharging pipe (17) penetrates the pull plate (14) and extends to the outside.

7. An environmentally friendly flue gas desulphurization device for the metallurgical industry, according to claim 6, characterized in that: The end of the air charging and discharging pipe (17) is provided with the sealing plug (18).

Images