Sulfur dioxide feeding device for air bromine blowing

Abstract

The utility model relates to the field of chemical related equipment, and provides a sulfur dioxide feeding device for air bromine blowing, which comprises a feeding bin, a partition plate, a sulfur melting tower, a spray gun and a sulfur furnace, the feeding bin is arranged above the sulfur melting tower, the feeding bin is in sealed connection with the sulfur melting tower, the partition plate is rotatably arranged between the sulfur melting tower and the feeding bin, a spray gun is arranged at an outlet of the sulfur melting tower, and the sulfur furnace is in sealed connection with a muzzle of the spray gun. Meanwhile, the stability of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to a sulfur dioxide feeding device for air blowing bromine. Background Technique

[0002] Low-concentration seawater acid method air blowing bromine is a method for producing bromine and also the most common production method in China at present. The main process is to first acidify seawater or brine with a low bromine content with sulfuric acid or hydrochloric acid, and then introduce chlorine for an oxidation reaction. The acidified oxidation liquid is added from the top of the blowing tower, and a large amount of air is added from the bottom of the blowing tower through a blower. The two are in countercurrent contact, and the generated free bromine is blown into the absorption tower through the air duct connected to the absorption tower from the top of the tower for an absorption reaction. This factory uses the acid method for absorption (i.e., using sulfur dioxide as the absorbent), adding sulfur dioxide at the top of the absorption tower, and reacting with the free bromine blown out by air Br 2 to generate a hydrobromic acid solution, enriching bromine to form an intermediate product absorption completion liquid, and finally passing through a distillation tower for distillation, cooling, and separation to produce finished bromine.

[0003] Under acidic conditions, bromide ions in seawater are oxidized by chlorine to form bromine molecules, and the reaction formula is as follows:

[0004]

[0005] The free bromine is blown out by air, and the blown bromine-containing air is absorbed by a sulfur dioxide absorbent to produce a HBr completion liquid. The reaction formula is as follows:

[0006]

[0007] Chlorine is added to the completion liquid, and bromine is freed again. The reaction formula is as follows:

[0008]

[0009] In this factory's sulfur dioxide preparation process, the motor makes the star-shaped unloader continuously turn to unload the solid granular sulfur in the feeding bin into the pipeline, and it is transported to the combustion furnace by a Roots blower, where it burns in the furnace to generate sulfur dioxide (SO 2 ) gas. Then, sulfur dioxide is used to absorb free bromine in the absorption tower to form an intermediate product absorption completion liquid. Among them, the acid method absorption is that sulfur burned to produce sulfur dioxide absorbs bromine molecules to form a hydrobromic acid completion liquid. Inevitably, floor materials will be generated when manual feeding is carried out into the feeding bin. If there are impurities in the raw materials, such as screws, iron wires, etc., it will cause the star-shaped unloader to jam and stop. Moreover, sublimated sulfur will be generated during the start-up and shutdown of the furnace. The sublimated sulfur enters the pipeline along with the sulfur dioxide gas. Due to the long pipeline, the temperature gradually drops during the pipeline flow, and the sublimated sulfur will solidify and block the pipeline, affecting production operation. Content of the Utility Model

[0010] The utility model aims to solve at least one of the technical problems existing in the related art. For this purpose, the utility model provides a sulfur dioxide feeding device for air-blowing bromine, which realizes instantaneous combustion of sulfur, sufficient combustion, avoids the generation of sublimed sulfur, and improves the stability of the equipment at the same time.

[0011] The utility model provides a sulfur dioxide feeding device for air-blowing bromine, comprising: a feeding bin, a partition board, a sulfur melting tower, a spray gun and a sulfur furnace; the feeding bin is arranged above the sulfur melting tower, and the feeding bin is hermetically connected with the sulfur melting tower, the partition board is rotatably arranged between the sulfur melting tower and the feeding bin, the spray gun is arranged at the outlet of the sulfur melting tower, and the sulfur furnace is hermetically connected with the muzzle of the spray gun.

[0012] According to the sulfur dioxide feeding device for air-blowing bromine provided by the utility model, an automatic igniter is arranged inside the sulfur furnace.

[0013] According to the sulfur dioxide feeding device for air-blowing bromine provided by the utility model, a scrubbing tower is further included, and the scrubbing tower is communicated with the sulfur furnace through a first channel.

[0014] According to the sulfur dioxide feeding device for air-blowing bromine provided by the utility model, a water jacket is coated on the outer side wall of the first channel, a water outlet is arranged at the upper end of the water jacket, and a water inlet is arranged at the lower end of the water jacket.

[0015] According to the sulfur dioxide feeding device for air-blowing bromine provided by the utility model, a blowing tower and an absorption tower are further included, a second channel is arranged at the top end of the scrubbing tower, and the other end of the second channel is communicated with the blowing tower and the absorption tower.

[0016] According to the sulfur dioxide feeding device for air-blowing bromine provided by the utility model, a first air inlet is arranged at the bottom end of the blowing tower, and the first air inlet is used for introducing air to form positive pressure.

[0017] According to the sulfur dioxide feeding device for air-blowing bromine provided by the utility model, a motor is further included, and the motor drives the partition board to rotate.

[0018] According to the sulfur dioxide feeding device for air-blowing bromine provided by the utility model, a filter screen is arranged at the outlet of the sulfur melting tower.

[0019] One or more of the above technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0020] According to the sulfur dioxide feeding device for air blowing bromine of the embodiment of the present utility model, by arranging a sulfur melting tower to convert granular sulfur into liquid sulfur and then spraying it into a sulfur furnace through a spray gun for combustion, the problem that sublimated sulfur solidifies in the pipeline during the startup and shutdown processes in the prior art, causing pipeline blockage, is solved. Instantaneous combustion is achieved, the combustion is sufficient, the generation of sublimated sulfur is avoided, and thus the stability of the equipment is improved.

[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the sulfur dioxide feeding device for air blowing bromine provided by the present utility model.

[0024] Reference Signs:

[0025] 1, feeding bin; 2, partition board; 3, sulfur melting tower; 4, spray gun; 5, sulfur furnace; 6, scrubbing tower; 7, first channel; 8, water jacket; 801, water outlet; 802, water inlet; 9, blowing tower; 10, absorption tower; 11, second channel; 12, first air inlet; 13, motor; 14, second air inlet. Detailed Embodiments

[0026] To make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0027] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0029] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0030] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0031] Figure 1 It is a schematic structural diagram of a sulfur dioxide feeding device for air blowing bromine provided by the present utility model.

[0032] The utility model provides a sulfur dioxide feeding device for air blowing bromine, as Figure 1 shown. The sulfur dioxide feeding device for air blowing bromine includes: a feeding bin 1, a partition plate 2, a sulfur melting tower 3, a spray gun 4 and a sulfur furnace 5; the feeding bin 1 is arranged above the sulfur melting tower 3, and the feeding bin 1 is hermetically connected to the sulfur melting tower 3. The partition plate 2 is rotatably arranged between the sulfur melting tower 3 and the feeding bin 1. The spray gun 4 is arranged at the outlet of the sulfur melting tower 3, and the sulfur furnace 5 is hermetically connected to the muzzle of the spray gun 4.

[0033] In this embodiment, by arranging the sulfur melting tower 3 to convert granular sulfur into liquid sulfur and then spraying it into the sulfur furnace 5 through the spray gun 4 for combustion, the problems in the prior art that sublimated sulfur solidifies in the pipeline during the start-up and shutdown processes, causing pipeline blockage, are solved. Instantaneous combustion is achieved, the combustion is sufficient, the generation of sublimated sulfur is avoided, and thus the stability of the equipment is improved.

[0034] According to some embodiments of the utility model, when the partition plate 2 is opened, granular sulfur enters the sulfur melting tower 3 through the feeding bin 1. After the sulfur particles are completely added to the sulfur melting tower 3, the partition plate 2 is closed. The sulfur melting tower 3 converts the granular sulfur into liquid sulfur by electric heating. The liquid sulfur is atomized by the spray gun 4 and then sprayed into the sulfur furnace 5. Air passes through an air dryer and then enters the sulfur furnace 5, where it burns sufficiently with the atomized liquid sulfur in the sulfur furnace 5. Due to the easy combustion property of liquid sulfur, it burns rapidly after contacting with oxygen in the air, and the combustion is sufficient, reducing the scattering of on-site dust.

[0035] According to some embodiments of the utility model, sublimated sulfur is generated during the start-up and shutdown of the furnace. The sublimated sulfur enters the pipeline along with the sulfur dioxide gas. Due to the long pipeline, the temperature gradually decreases during the flow in the pipeline, and the sublimated sulfur will solidify and block the pipeline, affecting the production operation. The atomized liquid sulfur burns instantaneously, avoiding the generation of sublimated sulfur.

[0036] According to some preferred embodiments of the utility model, the sulfur melting tower 3 can accommodate at least 1 ton of liquid sulfur, avoiding frequent manual feeding.

[0037] According to some preferred embodiments of the utility model, the spray gun 4 and the nozzle are made of stainless steel.

[0038] According to a sulfur dioxide feeding device for air blowing bromine provided by the utility model, an automatic igniter is arranged inside the sulfur furnace 5, and a second air inlet 14 is arranged on one side of the sulfur furnace 5 close to the spray gun. The second air inlet 14 is suitable for introducing air to provide oxygen for the combustion of liquid sulfur.

[0039] In this embodiment, by setting up an automatic igniter, manual ignition operations by construction workers are avoided, reducing labor costs and improving safety.

[0040] A sulfur dioxide feeding device for air blowing bromine according to the present utility model, as Figure 1 shown, the sulfur dioxide feeding device for air blowing bromine further includes a scrubbing tower 6, and the scrubbing tower 6 is communicated with the sulfur furnace 5 through a first channel 7.

[0041] In this embodiment, by providing a first channel 7 between the scrubbing tower 6 and the sulfur furnace 5, it is convenient for sulfur dioxide gas generated in the sulfur furnace 5 to be introduced into the scrubbing tower 6 to obtain sulfur dioxide with higher purity.

[0042] A sulfur dioxide feeding device for air blowing bromine according to the present utility model, as Figure 1 shown, the outer side wall of the first channel 7 is coated with a water jacket 8, the upper end of the water jacket 8 is provided with a water outlet 801, and the lower end of the water jacket 8 is provided with a water inlet 802.

[0043] In this embodiment, by providing a water jacket 8 outside the first channel 7, it is suitable for cooling sulfur dioxide in the first channel 7 for subsequent use.

[0044] According to some embodiments of the present utility model, water enters the water jacket 8 through the water inlet 802 provided at the lower end of the water jacket 8 and flows out from the water outlet 801 at the upper end of the water jacket 8 to ensure the residence time of water in the water jacket 8. The heated water in the water jacket 8 is used in subsequent steps, saving resources.

[0045] A sulfur dioxide feeding device for air blowing bromine according to the present utility model, as Figure 1 shown, the sulfur dioxide feeding device for air blowing bromine further includes a blowing tower 9 and an absorption tower 10. The top end of the scrubbing tower 6 is provided with a second channel 11, and the other end of the second channel 11 is communicated with the blowing tower 9 and the absorption tower 10.

[0046] A sulfur dioxide feeding device for air blowing bromine according to the present utility model, the bottom end of the blowing tower 9 is provided with a first air inlet 12, and the first air inlet 12 is used for introducing air to form a positive pressure.

[0047] According to some embodiments of the present utility model, seawater is pumped into a pipeline by a pump, and an acidification and oxidation process is carried out in the pipeline. Then, the treated seawater is introduced into a blowing tower 9. The acidification and oxidation liquid is introduced from the top of the blowing tower 9, and air is introduced from the bottom. Bromine and part of the moisture are blown to the top and connected to a channel of an absorption tower 10, and directly react with sulfur dioxide in a second channel 11. The reacted liquid flows into the absorption tower 10 because the pressure in the blowing tower 9 is greater than the pressure in the absorption tower 10, and a hydrobromic acid solution is obtained.

[0048] A sulfur dioxide feeding device for air blowing bromine according to the present utility model, as Figure 1 shown, the sulfur dioxide feeding device for air blowing bromine further includes a motor 13, and the motor 13 drives the partition plate 2 to rotate.

[0049] In this embodiment, by setting an electrode to drive the partition plate 2 to rotate, manual operation is separated from the equipment, improving the safety of the equipment.

[0050] A sulfur dioxide feeding device for air blowing bromine according to the present utility model, as Figure 1 shown, a filter screen is arranged at the outlet of a molten sulfur tower 3 of the sulfur dioxide feeding device for air blowing bromine.

[0051] In this embodiment, by setting a filter screen, granular sulfur is prevented from flowing out with liquid sulfur to block a spray gun 4.

[0052] The sulfur dioxide feeding device for air blowing bromine in the embodiment of the present utility model has the following technical effects compared with the prior art:

[0053] (1) Granular sulfur enters the molten sulfur tower through a feeding bin. The feeding bin is hermetically connected to the molten sulfur tower, and a partition plate is arranged in the middle. The molten sulfur tower is heated by electricity to make liquid sulfur. Reduce the dust scattering at the production site.

[0054] (2) Liquid sulfur is sprayed into a sulfur furnace through a spray gun for atomization. By using the property that liquid sulfur is an oxidant and is prone to form a combustion reaction, the characteristics of instantaneous combustion and sufficient combustion are utilized to avoid the generation of sublimed sulfur and reduce production consumption. Ensure the continuous and stable operation of production.

[0055] (3) Air is mixed with atomized sulfur in the furnace for combustion after passing through an air dryer, providing conditions for sulfur combustion.

[0056] (4) The molten sulfur tower can hold one ton of liquid sulfur for 24-hour use by a single set of devices. Avoid frequent manual feeding.

[0057] (5) There is an automatic ignition device in the furnace, avoiding manual ignition operations by construction personnel and improving safety.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sulfur dioxide feeding device for air-blown bromine, characterized in that: include: Feeding silos, baffles, sulfur melting towers, lances and sulfur furnaces; The feeding bin is arranged above the sulfur melting tower, and the feeding bin and the sulfur melting tower are sealed and connected, the partition is rotatably arranged between the sulfur melting tower and the feeding bin, the spray gun is arranged at the outlet of the sulfur melting tower, and the sulfur furnace is sealed and connected to the muzzle of the spray gun.

2. The sulfur dioxide feeding device for air-blown bromine according to claim 1, characterized in that: An automatic igniter is arranged inside the sulfur furnace.

3. The sulfur dioxide feeding device for air-blown bromine according to claim 1, characterized in that: It also includes a scrubbing tower, which is connected to the sulfur furnace through a first channel.

4. The sulfur dioxide feeding device for air-blown bromine according to claim 3, characterized in that: The outer side wall of the first channel is covered with a water jacket, the upper end of the water jacket is provided with a water outlet, and the lower end of the water jacket is provided with a water inlet.

5. The sulfur dioxide feeding device for air-blown bromine according to claim 3, characterized in that: It also includes a blowing tower and an absorption tower. The top of the scrubbing tower is provided with a second channel, and the other end of the second channel is connected with the blowing tower and the absorption tower.

6. The sulfur dioxide feeding device for air-blown bromine according to claim 5, characterized in that: A first air inlet is disposed at the bottom end of the blowing tower, and the first air inlet is used to introduce air to form a positive pressure.

7. The sulfur dioxide feeding device for air-blown bromine according to claim 1, characterized in that: A motor is also included, and the motor drives the partition to rotate.

8. The sulfur dioxide feeding device for air-blown bromine according to claim 1, characterized in that: A filter screen is arranged at the outlet of the sulfur melting tower.

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