Gas desulfurization device

Abstract

The utility model discloses a gas desulfurization device and relates to the technical field of blast furnace gas desulfurization. The device comprises the pretreatment tank and the secondary treatment tank, the rotating pipe is mounted in the middle of the top end of the pretreatment tank through the sealing bearing, and the rotating pipe, the stirring rod and the one-way nozzle are matched with one another, so that coal gas can directly pass through the interior of the rotating pipe and then is released into an alkaline solution through the one-way nozzle; in the process, due to the driving of a driving gear and a driven gear, the stirring liquid and the stirring rod can mix the alkaline solution, so that the coal gas and the alkaline solution are fully mixed, and the gas neutralized by the alkaline solution is secondarily filtered by a filter plate and conveyed to a detection cavity; the exhaust gas can be detected by using the air detector, and when the detection effect is unqualified, the gas is pumped to the two one-way valves by using the second negative pressure pump and enters the alkaline solution again for neutralization again, so that the desulfurization effect on the coal gas is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of blast furnace gas desulfurization, specifically, it relates to a gas desulfurization device. Background Technology

[0002] Blast furnace gas desulfurization equipment is mainly used to purify the combustible gas produced as a by-product during the blast furnace production process, namely blast furnace gas. Untreated blast furnace gas contains a large amount of dust and sulfides.

[0003] At present, most coke oven gas desulfurization devices inject the gas into the desulfurization liquid for desulfurization treatment. However, since the weight of coke oven gas is lower than that of air, it rises rapidly in the desulfurization liquid, resulting in incomplete desulfurization of the gas. In view of this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a coal gas desulfurization device.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A coal gas desulfurization device includes a pretreatment tank and a secondary treatment tank. A rotating pipe is installed at the top center of the pretreatment tank via a sealed bearing. A conduit for desulfurization gas to enter is connected to the top of the rotating pipe via a rotary joint. The bottom of the rotating pipe is rotatably connected to a bracket inside the pretreatment tank via a bearing. Multiple stirring rods are connected to the lower end of the rotating pipe. Multiple one-way nozzles are connected to the upper end of each stirring rod. Multiple stirring blades are fixed to the outer side of the middle part of the rotating pipe.

[0007] The pretreatment tank contains an alkaline solution for desulfurization. A drain valve is connected to the bottom of the pretreatment tank. An annular replenishment pipe is fixed to the upper end of the pretreatment tank. Multiple replenishment nozzles are fixed at equal intervals at the lower end of the annular replenishment pipe. The upper end of the pretreatment tank passes through the side of the secondary treatment tank through an exhaust pipe and is connected to a special-shaped pipe at the lower end of the pretreatment tank. Multiple exhaust nozzles are installed at the upper end of the special-shaped pipe. A frame for inserting a pull-out component is fixed to one side of the interior of the secondary treatment tank. The outer end of the pull-out component is fixed to the outer side of the secondary treatment tank by a fixing bolt.

[0008] The pull-out component has a cavity in the middle for gas flow, and multiple filter plates for gas filtration are installed in the middle of the cavity. The secondary treatment tank has an equipment cavity for installing a first negative pressure pump and a second negative pressure pump. The negative pressure end of the first negative pressure pump passes through the equipment cavity through a pipe and is located above the pull-out component. The exhaust end of the first negative pressure pump passes through the detection cavity inside the secondary treatment tank. The top of the detection cavity is connected to a discharge pipe, and a first control valve is provided in the middle of the discharge pipe.

[0009] The negative pressure end of the second negative pressure pump penetrates the inside of the detection cavity through a pipeline and communicates with the first one-way valve, and the exhaust end of the second negative pressure pump penetrates to the inside of the pretreatment tank through a circulation pipeline and communicates with the second one-way valve, and the second one-way valve and the one-way nozzle are both below the liquid level of the alkaline solution inside the pretreatment tank.

[0010] Optionally, the upper end of the rotating pipe is externally sleeved with a driven gear, a driving gear is engaged and connected to the outside of the driven gear, the driving gear is fixedly installed on the outside of the output shaft of the motor, and the motor is fixed on the top of the pretreatment tank through the machine box.

[0011] Optionally, one side of the annular liquid supplementing pipe is communicated with a liquid injection pipe, a second control valve is arranged in the middle of the liquid injection pipe, the bottom of the liquid injection pipe is communicated with the exhaust end of the corrosion-resistant material conveying pump, the negative pressure end of the corrosion-resistant material conveying pump penetrates to the inside of the liquid storage tank through a pipeline, the liquid storage tank is fixedly installed on the side of the pretreatment tank, and a liquid supplementing cover is threadedly connected to one side of the upper end of the liquid storage tank.

[0012] Optionally, one side of the liquid storage tank is fixedly provided with an L-shaped block, an optical liquid level sensor is installed in the middle of the L-shaped block, and the detection end of the optical liquid level sensor abuts against the side of the liquid storage tank, the liquid storage tank is made of a see-through material, and the optical liquid level sensor is connected to the side of the liquid storage tank through wires.

[0013] Optionally, the top of the secondary treatment tank is fixedly provided with a gas detector, and the detection end of the gas detector penetrates to the inside of the detection cavity.

[0014] Optionally, one side of the pretreatment tank is fixedly provided with a solution detection sensor for detecting the pH value of the neutralizing liquid.

[0015] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0016] 1. The device cooperates the rotating pipe, the stirring rod and the one-way nozzle to make the coal gas directly pass through the inside of the rotating pipe and then be released into the inside of the alkaline solution through the one-way nozzle, so that the coal gas directly contacts the alkaline solution for neutralization, and the driving of the driving gear and the driven gear enables the stirring liquid and the stirring rod to mix the alkaline solution, thereby helping the coal gas to fully mix with the alkaline solution, and the gas after neutralization by the alkaline solution is sent to the detection cavity through the secondary filtration of the filter plate, and the exhaust gas can be detected by the gas detector, and when the detection effect is unqualified, the second negative pressure pump is used to pump the gas into the inside of the alkaline solution again to neutralize again, thereby ensuring the desulfurization effect of the coal gas.

[0017] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings

[0019] In the drawings:

[0020] Figure 1 It is a schematic view of the front view cross-sectional structure of the present application;

[0021] Figure 2 It is Figure 1 A part structure schematic view in the part;

[0022] Figure 3 It is Figure 1 B part structure schematic view in the part;

[0023] Figure 4 It is Figure 1 C part structure schematic view in the part;

[0024] Figure 5 It is Figure 1 D part structure schematic view in the part.

[0025] In the drawings, the component list represented by each number is as follows:

[0026] 1, pretreatment tank; 2, rotating pipe; 3, rotary joint; 4, conduit; 5, bracket; 6, stirring rod; 7, one-way nozzle; 8, stirring blade; 9, liquid discharge valve; 10, annular liquid supplementing pipe; 11, liquid supplementing nozzle; 12, exhaust pipe; 13, secondary treatment tank; 14, special-shaped pipe; 15, exhaust nozzle; 16, pulling piece; 17, fixing bolt; 18, filter plate; 19, first negative pressure pump; 20, second negative pressure pump; 21, discharge pipe; 22, first control valve; 23, first one-way valve; 24, second one-way valve; 25, driven gear; 26, driving gear; 27, motor; 28, liquid injection pipe; 29, second control valve; 30, corrosion-resistant material conveying pump; 31, liquid storage tank; 32, liquid supplementing cover; 33, L-shaped block; 34, optical liquid level sensor; 35, controller; 36, loudspeaker; 37, gas detector.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] The present application will now be further described in detail with reference to the accompanying drawings.

[0029] Please refer to Figures 1 to 5 The utility model provides a technical scheme: coal gas desulfurization device, including pre -treatment jar 1 and secondary treatment jar 13, the top end middle part of pre -treatment jar 1 is equipped with the rotation pipe 2 through the sealing bearing, is connected with the guide pipe 4 of the desulfurization gas import through the rotary joint 3 in the top of rotation pipe 2, the bottom of rotation pipe 2 is rotatably connected with the bracket 5 in the inside of pre -treatment jar 1 through bearing, the lower end of rotation pipe 2 is connected with a plurality of stirring rods 6, the upper end of each stirring rod 6 is connected with a plurality of one -way shower head 7, and the middle part outside of rotation pipe 2 is fixed with a plurality of stirring vane 8;

[0030] The inside of pre -treatment jar 1 is equipped with the alkaline solution for desulfurization, and the bottom of pre -treatment jar 1 is connected with the drain valve 9, the upper end of pre -treatment jar 1 is fixed with annular liquid supplementing pipe 10, and a plurality of liquid supplementing nozzles 11 are fixed at the lower end of annular liquid supplementing pipe 10 at equal intervals, the upper end of pre -treatment jar 1 is through exhaust pipe 12 and is communicated with the heteromorphic pipe 14 of the lower end inside pre -treatment jar 1 in the side of secondary treatment jar 13, and a plurality of exhaust nozzles 15 are installed in the upper end of heteromorphic pipe 14, and the frame body of the pull -out piece 16 is fixed in the inside one side of secondary treatment jar 13, and the outside end of pull -out piece 16 is fixed with the outside of secondary treatment jar 13 through fixed bolt 17;

[0031] The middle part of pull -out piece 16 is equipped with the cavity for gas circulation, and a plurality of filter plates 18 for gas filtration are installed in the middle part of the cavity, and the equipment cavity for installing the first negative pressure pump 19 and the second negative pressure pump 20 is set up in the inside of secondary treatment jar 13, the negative pressure end of first negative pressure pump 19 is through pipeline and is located above pull -out piece 16 in the equipment cavity, and the exhaust end of first negative pressure pump 19 is penetrated into the detection cavity in the inside of secondary treatment jar 13, and the discharge pipe 21 is communicated with the top of detection cavity, and the first control valve 22 is arranged in the middle part of discharge pipe 21;

[0032] The negative pressure end of the second negative pressure pump 20 penetrates the inside of the detection cavity through the pipeline and communicates with the first one-way valve 23, the exhaust end of the second negative pressure pump 20 penetrates to the inside of the pretreatment tank through the circulating pipe and communicates with the second one-way valve 24, and the second one-way valve 24 and the one-way nozzle 7 are both located below the surface of the alkaline solution in the inside of the pretreatment tank. Considering that the coke oven gas desulfurization device at this stage usually injects the gas into the desulfurization liquid for desulfurization treatment, but the weight of the coke oven gas is lower than that of air, and the rising speed in the desulfurization liquid is also relatively fast, which leads to the incomplete desulfurization of the gas. The device cooperates the rotating pipe 2, the stirring rod and the one-way nozzle 7 to make the gas directly pass through the inside of the rotating pipe 2 and then be released into the inside of the alkaline solution through the one-way nozzle 7. At this time, the gas directly contacts with the alkaline solution for neutralization. In the process, the driving gear 26 and the driven gear 25 drive the stirring liquid and the stirring rod 6 to mix the alkaline solution, thereby helping the gas to fully mix with the alkaline solution. The gas after being neutralized by the alkaline solution is filtered by the filter plate 18, transported to the detection cavity and then detected by the gas detector. When the detection result does not meet the emission standard, the second negative pressure pump 20 is used to pump the gas into the alkaline solution again for re-neutralization, thereby ensuring the desulfurization effect of the gas.

[0033] The upper end of the rotating pipe 2 is externally sleeved with the driven gear 25, the driving gear 26 is connected with the driven gear 25 on the outside, the driving gear 26 is fixedly installed on the outside of the output shaft of the motor 27, the motor 27 is fixed on the top of the pretreatment tank 1 through the machine box, the driving gear 26 is driven by the motor 27, the driving gear 26 rotates to drive the driven gear 25 to rotate, and the rotating pipe 2 rotates.

[0034] The side of the annular liquid supplement pipe 10 is communicated with the liquid injection pipe 28, the middle part of the liquid injection pipe 28 is provided with the second control valve 29, the bottom of the liquid injection pipe 28 is communicated with the exhaust end of the corrosion-resistant material conveying pump 30, the negative pressure end of the corrosion-resistant material conveying pump 30 penetrates into the inside of the liquid storage tank 31 through the pipeline, the liquid storage tank 31 is fixedly installed on the side of the pretreatment tank 1, the upper end of the liquid storage tank 31 is threadedly connected with the liquid supplement cover 32 on one side, and the corrosion-resistant material conveying pump 30, the annular liquid supplement pipe 10 and the liquid storage tank 31 are cooperated to supplement the alkaline solution in the inside of the pretreatment tank 1, that is, the standby alkaline solution in the liquid storage tank 31 is conveyed into the inside of the pretreatment tank 1 by the corrosion-resistant material conveying pump 30 to supplement the alkaline solution in the inside of the pretreatment tank 1.

[0035] The L-shaped block 33 is fixed on one side of the liquid storage tank 31, the optical liquid level sensor 34 is installed in the middle of the L-shaped block 33, the detection end of the optical liquid level sensor 34 is in contact with the side of the liquid storage tank 31, the liquid storage tank 31 is made of a transparent material, the optical liquid level sensor 34 is connected with the side of the liquid storage tank 31 through wires, the front end of the controller 35 is provided with a control panel and a loudspeaker 36, the optical liquid level sensor 34 and the controller 35 are arranged to detect the standby alkaline solution in the liquid storage tank 31, that is, when the height of the alkaline solution is lower than the detection position of the optical liquid level sensor 34, the chip in the control panel processes the analog data obtained by the optical liquid level sensor 34, and then triggers the switch of the loudspeaker 36, and the loudspeaker 36 sounds to remind the device caretaker.

[0036] The gas detector 37 is fixed on the top of the secondary treatment tank 13, and the detection end of the gas detector 37 penetrates into the detection interior, the gas detector 37 is arranged to detect the discharged gas, when the detection result is not up to standard, the second negative pressure pump 20 is used to deliver the gas to the interior of the pretreatment tank 1 for secondary treatment, so that the desulfurization effect of the coal gas meets the emission standard.

[0037] The solution detection sensor 38 for detecting the pH value of the neutralizing liquid is fixed on one side of the pretreatment tank 1, and the solution detection sensor 38 is arranged to detect the pH value of the neutralizing liquid in the pretreatment tank 1.

[0038] The utility model is not limited to the above-mentioned embodiment, any person should know the structural change made under the inspiration of the utility model, any technical scheme with the same or similar utility model falls into the protection scope of the utility model. The utility model does not describe the technology, shape and structure part in detail, which is the known technology.

Claims

1. A coal gas desulfurization apparatus comprising a pretreatment tank (1) and a secondary treatment tank (13), characterized in that, The middle part of the top end of the pre-treatment tank (1) is provided with a rotating pipe (2) through a sealing bearing, a guide pipe (4) for entering desulfurization gas is connected to the top of the rotating pipe (2) through a rotary joint (3), the bottom of the rotating pipe (2) is rotatably connected to a bracket (5) inside the pre-treatment tank (1) through a bearing, the lower end of the rotating pipe (2) is communicated with a plurality of stirring rods (6), the upper end of each stirring rod (6) is communicated with a plurality of one-way nozzles (7), a plurality of stirring blades (8) are fixed to the outside of the middle part of the rotating pipe (2); The inside of the pre-treatment tank (1) is provided with an alkaline solution for desulfurization, a liquid discharge valve (9) is communicated to the bottom of the pre-treatment tank (1), an annular liquid supplementing pipe (10) is fixed to the upper end of the pre-treatment tank (1), a plurality of liquid supplementing nozzles (11) are fixed to the lower end of the annular liquid supplementing pipe (10) at equal intervals, the upper end of the pre-treatment tank (1) penetrates the side of a secondary treatment tank (13) through an exhaust pipe (12) and is communicated with a special-shaped pipe (14) at the lower end inside the pre-treatment tank (1), a plurality of exhaust nozzles (15) are installed at the upper end of the special-shaped pipe (14), a frame body for plugging a pulling member (16) is fixed to one side inside the secondary treatment tank (13), the outside end of the pulling member (16) is fixed to the outside of the secondary treatment tank (13) through a fixing bolt (17); A cavity for gas circulation is formed in the middle part of the pulling member (16), a plurality of filter plates (18) for filtering gas are installed in the middle part of the cavity, a device cavity for installing a first negative pressure pump (19) and a second negative pressure pump (20) is formed in the inside of the secondary treatment tank (13), the negative pressure end of the first negative pressure pump (19) penetrates the device cavity through a pipeline and is located above the pulling member (16), the exhaust end of the first negative pressure pump (19) penetrates into a detection cavity inside the secondary treatment tank (13), a discharge pipe (21) is communicated to the top of the detection cavity, a first control valve (22) is arranged in the middle part of the discharge pipe (21); The negative pressure end of the second negative pressure pump (20) penetrates the inside of the detection cavity through a pipeline and is communicated with a first one-way valve (23), the exhaust end of the second negative pressure pump (20) penetrates into the inside of the pre-treatment tank through a circulation pipe and is communicated with a second one-way valve (24), the second one-way valve (24) and the one-way nozzles (7) are located below the liquid level of the alkaline solution inside the pre-treatment tank.

2. The coal gas desulfurization apparatus according to claim 1, characterized by A driven gear (25) is sleeved and fixed to the outside of the upper end of the rotating pipe (2), a driving gear (26) is engaged and connected to the outside of the driven gear (25), the driving gear (26) is fixedly installed on the outside of the output shaft of a motor (27), and the motor (27) is fixed to the top of the pre-treatment tank (1) through a machine box.

3. The coal gas desulfurization apparatus according to claim 1, characterized by One side of the annular liquid supplementing pipe (10) is communicated with a liquid injection pipe (28), the middle part of the liquid injection pipe (28) is provided with a second control valve (29), the bottom of the liquid injection pipe (28) is communicated with the liquid discharging end of the corrosion-resistant material conveying pump (30), the negative pressure end of the corrosion-resistant material conveying pump (30) is penetrated into the inside of the liquid storage tank (31) through a pipeline, the liquid storage tank (31) is fixedly installed on the side of the pretreatment tank (1), and the upper end of the liquid storage tank (31) is screw-connected with a liquid supplementing cover (32) on one side.

4. The coal gas desulfurization apparatus according to claim 3, characterized by One side of the liquid storage tank (31) is fixedly provided with an L-shaped block (33), an optical liquid level sensor (34) is installed on the middle part of the L-shaped block (33), and the detection end of the optical liquid level sensor (34) is in contact with the side of the liquid storage tank (31); the liquid storage tank (31) is made of a transparent material, and the optical liquid level sensor (34) is connected with the side of the liquid storage tank (31) through wires; the front end of the controller (35) is provided with a control panel and a loudspeaker (36).

5. The coal gas desulfurization apparatus according to claim 1, wherein The top of the secondary treatment tank (13) is fixedly provided with a gas detector (37), and the detection end of the gas detector (37) penetrates into the inside of the detection.

6. The coal gas desulfurization apparatus according to claim 1, wherein One side of the pretreatment tank (1) is fixedly provided with a solution detection sensor (38) for detecting the pH value of the neutralizing liquid.

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