Novel chemical oil refining desulfurizing tower

Abstract

The utility model discloses a novel chemical oil refining desulfurizing tower which comprises a tower shell, a leading-in pipeline is communicated with the lower side of the left end of the tower shell, an exhaust port is formed in the upper end of the tower shell, a slurry pond is arranged at the bottom of the tower shell, a plurality of porous stones are arranged on the upper side of the leading-in pipeline and are all located in the tower shell, and the slurry pond is arranged in the tower shell. By means of the spraying channel spirally arranged in the spraying barrel, the direction of waste gas is forcibly changed, the flowing path is prolonged, the reaction time of the waste gas and slurry is prolonged, in the spraying barrel, the slurry is jetted upwards and rebounded through the spraying head, and the waste gas is discharged out of the spraying barrel. According to the desulfurization tower, the sprayed slurry can absorb sulfides in waste gas twice, so that the reaction times of the waste gas and the slurry are increased, the waste gas is prevented from being directly discharged from the lower part of the spray header, the sufficient treatment of the waste gas is ensured, the retention time of the waste gas in the tower is prolonged, the reaction times of the waste gas and the slurry are increased, and the desulfurization effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to chemical industry, and specifically relates to a novel chemical oil refining desulfurization tower. Background Art

[0002] In the process of chemical refining, raw oil undergoes chemical reactions such as high-temperature cracking or reforming to produce various petroleum products. At the same time, a large amount of sulfur-containing waste gas will also be produced. The emission of sulfides (such as sulfur dioxide SO2 and hydrogen sulfide H2S) causes serious pollution to the atmosphere and poses a threat to human health. Therefore, controlling and reducing sulfide emissions is an important issue facing the chemical refining industry.

[0003] Existing waste gas treatment technologies mainly include wet desulfurization, dry desulfurization and semi-dry desulfurization. Among them, wet desulfurization is the most commonly used method. It usually uses alkaline absorbents (such as limestone slurry) to neutralize sulfides in waste gas to generate sulfates and water. Although wet desulfurization technology is mature and relatively economical, it also has some disadvantages, such as low absorption efficiency of sulfides in waste gas.

[0004] Dry desulfurization uses solid adsorbents to directly react chemically with sulfides in the exhaust gas to generate sulfates or elemental sulfur, thereby achieving the purpose of desulfurization. The advantage of dry desulfurization is that it does not produce wastewater and has less impact on the environment, but its disadvantages are that the adsorbent is difficult to regenerate, the processing cost is high, and the humidity and temperature in the exhaust gas are required to be high.

[0005] Semi-dry desulfurization is a technology between wet and dry methods. It uses partially liquefied absorbent to treat sulfides in exhaust gas. Semi-dry desulfurization can not only maintain good desulfurization efficiency, but also reduce the generation of wastewater to a certain extent. However, semi-dry desulfurization equipment is complex and has high operating and maintenance costs.

[0006] In view of the limitations of the existing technology, the chemical refining industry is in urgent need of a new type of waste gas treatment technology, which should have the characteristics of high efficiency, environmental protection, low energy consumption and easy maintenance. To this end, the present invention provides a new type of desulfurization tower for chemical refining. The desulfurization tower achieves efficient desulfurization of waste gas through a multi-stage processing structure and optimized airflow path design, while reducing energy consumption and maintenance costs, providing a new solution for environmental protection management in the chemical refining industry. Utility Model Content

[0007] The utility model aims to provide a novel chemical oil refining desulfurization tower to solve the problem of low absorption efficiency of sulfides in waste gas proposed in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of chemical oil refining desulfurization tower, including a tower shell, an inlet pipe is connected to the lower side of the left end of the tower shell, an exhaust port is opened at the upper end of the tower shell, a slurry pool is arranged at the bottom of the tower shell, a plurality of porous stones are arranged on the upper side of the inlet pipe, and the plurality of porous stones are all located inside the tower shell, a circulating pumping machine is arranged on the right side of the tower shell, and the left end of the circulating pumping machine is connected to the inside of the slurry pool through a pipe, a dispersion pipe is arranged on the upper side of the inside of the tower shell, and is connected to the upper end of the circulating pumping machine through a pipe, and a spray barrel is arranged at the lower end of the dispersion pipe.

[0009] Preferably, the spray barrel is located above the multiple porous stones and is fixedly connected to the upper inner wall of the tower shell.

[0010] Preferably, a filter plate is fixedly disposed inside the upper end of the tower shell, and an exhaust fan is disposed on the lower side of the filter plate.

[0011] Preferably, the exhaust fan is fixedly connected to the inner wall of the tower shell via a connecting shaft and is located between the filter plate and the dispersion pipe.

[0012] Preferably, a plurality of spray channels are passed through the spray barrel from top to bottom, and the plurality of spray channels are arranged in a spiral shape.

[0013] Preferably, a spray pipe is provided inside the inner wall of the lower end of the spray channel, the upper end of the spray pipe is connected to the dispersion pipe, and the lower end is closed.

[0014] Preferably, the upper end of the spray pipe is connected to a plurality of spray heads, and the plurality of spray heads are arranged in a vertical state with their openings facing upward.

[0015] Preferably, a plurality of the porous stones are stacked inside the tower shell through a barrier net and can be replaced by opening a sealing door cover arranged in the middle of the front end of the tower shell.

[0016] Compared with the prior art, the utility model provides a new type of chemical oil refining desulfurization tower, which has the following beneficial effects:

[0017] 1. Through the spiral spray channel inside the spray barrel, the exhaust gas is forced to change direction, which prolongs the flow path and increases the reaction time with the slurry. In the spray barrel, the slurry is sprayed upward through the spray head and rebounds, so that the sprayed slurry can absorb the sulfide in the exhaust gas twice, increasing the number of reactions between the exhaust gas and the slurry, and avoiding the exhaust gas from being directly discharged from under the spray head, ensuring the full treatment of the exhaust gas. This design increases the residence time of the exhaust gas in the tower and the number of reactions with the slurry, thereby improving the desulfurization effect.

[0018] 2. By setting porous stones in the tower, the porous stones disperse and absorb the slurry into the interior through the holes inside, increasing the contact area between the exhaust gas and the slurry and improving the desulfurization effect. At the same time, the porous stones can be replaced by opening the sealing door cover in the middle of the front end of the tower shell, which greatly simplifies maintenance work and reduces operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the desulfurization tower of the utility model.

[0020] Figure 2 It is a schematic diagram of the rear cross-sectional structure of the desulfurization tower of the utility model.

[0021] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the desulfurization tower of the utility model.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the spray barrel of the utility model.

[0023] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the spray barrel of the utility model.

[0024] In the figure: 1. tower shell; 2. inlet pipe; 3. exhaust port; 4. slurry pool; 5. filter plate; 6. exhaust fan; 7. porous stone; 8. circulating pump; 9. dispersion pipe; 10. spray cylinder; 11. spray channel; 12. spray pipe; 13. spray head. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides Figure 1-Figure 3A novel chemical oil refining desulfurization tower shown in the figure comprises a tower shell 1, the lower side of the left end of the tower shell 1 is connected with an inlet pipe 2, the inlet pipe 2 is used to introduce the waste gas into the tower shell 1, the upper end of the tower shell 1 is provided with an exhaust port 3, which is used to discharge the treated gas, the bottom of the tower shell 1 is provided with a slurry pool 4, which is used to absorb sulfides in the waste gas, the upper end of the tower shell 1 is fixedly provided with a filter plate 5, which is used to filter the gas slurry in the treated gas, the lower side of the filter plate 5 is provided with an exhaust fan 6, which is used to accelerate the discharge of the treated gas, and the inlet pipe 2 is provided with an exhaust port 3, which is used to discharge the treated gas, and the lower side of the filter plate 5 is provided with an exhaust fan 6, which is used to accelerate the discharge of the treated gas. A plurality of porous stones 7 are arranged on the upper side, and the plurality of porous stones 7 are all located inside the tower shell 1, for increasing the gas-liquid contact area; a circulating liquid pumping machine 8 is arranged on the right side of the tower shell 1, and the left end of the circulating liquid pumping machine 8 is connected with the inside of the slurry pool 4 through a pipeline, for extracting the slurry inside the slurry pool 4; a dispersion pipe 9 is arranged on the upper side of the interior of the tower shell 1, and is connected with the upper end of the circulating liquid pumping machine 8 through a pipeline, for connecting the circulating liquid pumping machine 8 with a spray barrel 10; a spray barrel 10 is arranged at the lower end of the dispersion pipe 9, for spraying slurry to absorb sulfides in the exhaust gas.

[0027] Preferably, in the process of treating chemical refinery waste gas, the introduction pipe 2 introduces the waste gas into the interior of the tower shell 1, and the waste gas flows upward. Since the spray barrel 10 is located above the multiple porous stones 7, the waste gas first passes through the porous stones 7, and then passes through the spray barrel 10 to absorb and treat the internal sulfides. The treated gas is blown upward by the exhaust fan 6 located between the filter plate 5 and the dispersion pipe 9, and then passes through the filter plate 5 to absorb the gas slurry remaining in the treated gas, making the discharged gas more environmentally friendly, and finally discharged from the exhaust port 3.

[0028] like Figure 4 and Figure 5 As shown, a plurality of spray channels 11 are passed through the spray barrel 10 from top to bottom. The plurality of spray channels 11 are spirally arranged to increase the length of the exhaust gas flow path, and at the same time rebound and disperse the slurry sprayed upward again. A spray pipe 12 is arranged inside the inner wall of the lower end of the spray channel 11. The upper end of the spray pipe 12 is connected to the dispersion pipe 9, and the lower end is closed, which is used to connect the dispersion pipe 9 and the spray head 13. The upper end of the spray pipe 12 is connected to a plurality of spray heads 13. The plurality of spray heads 13 are vertically arranged with their openings facing upward, so as to evenly spray the slurry into the spray channel 11 and spray the slurry upward.

[0029] Preferably, in the process of the spray barrel 10 treating the exhaust gas, the slurry is dispersed into the interior of each spray pipe 12 through the dispersion pipe 9, and is sprayed upward into each spray channel 11 through multiple spray heads 13 at the upper end of each spray pipe 12. Since the spray head 13 is vertically upward and the opening is upward, the spray head 13 can evenly spray the slurry upward into the spray channel 11, allowing the slurry to absorb the sulfides in the exhaust gas upward. When the sprayed slurry is sprayed onto the inner wall of the upper end of the spray channel 11, the spray channel 11 rebounds downward and disperses the slurry, allowing the slurry to absorb the sulfides in the exhaust gas again downward, so that the sprayed slurry can absorb the sulfides in the exhaust gas twice, thereby increasing the absorption time of the slurry on the sulfides in the exhaust gas. At the same time, since the spray channel 11 is spirally arranged, the flow path length of the exhaust gas in the spray barrel 10 can be effectively increased, thereby effectively increasing the absorption efficiency of the slurry on the sulfides in the exhaust gas.

[0030] In addition, when the slurry flowing out of the spray barrel 10 passes through the porous stone 7, the multiple porous stones 7 disperse and absorb the slurry into the internal holes. At this time, since the multiple porous stones 7 themselves and the internal holes can effectively increase the expansion area of ​​the slurry, the exhaust gas passing through the multiple porous stones 7 and the inside of the porous stone 7 can fully contact with the slurry, thereby increasing the absorption efficiency of sulfides in the exhaust gas. After passing through the porous stone 7, the slurry will fall into the slurry pool 4 and participate in the circulation again. Since the multiple porous stones 7 are accumulated inside the tower shell 1 through the blocking net, they can be replaced by opening the sealing door cover set in the middle of the front end of the tower shell 1, ensuring that the internal holes of the porous stone 7 can be replaced in time after being blocked.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of chemical oil refining desulfurization tower, characterized in that: The invention comprises a tower shell (1), wherein the lower left side of the tower shell (1) is connected to an inlet pipe (2), the upper end of the tower shell (1) is provided with an exhaust port (3), a slurry pool (4) is arranged at the bottom of the tower shell (1), a plurality of porous stones (7) are arranged on the upper side of the inlet pipe (2), and the plurality of porous stones (7) are all located inside the tower shell (1), a circulating pumping machine (8) is arranged on the right side of the tower shell (1), and the left end of the circulating pumping machine (8) is connected to the inside of the slurry pool (4) through a pipe, a dispersion pipe (9) is arranged on the upper side of the inside of the tower shell (1), and is connected to the upper end of the circulating pumping machine (8) through a pipe, and a spray cylinder (10) is arranged at the lower end of the dispersion pipe (9).

2. A novel chemical oil refining desulfurization tower according to claim 1, characterized in that: The spray barrel (10) is located above the plurality of porous stones (7) and is fixedly connected to the upper inner wall of the tower shell (1).

3. A novel chemical oil refining desulfurization tower according to claim 2, characterized in that: A filter plate (5) is fixedly arranged inside the upper end of the tower shell (1), and an exhaust fan (6) is arranged on the lower side of the filter plate (5).

4. A novel chemical oil refining desulfurization tower according to claim 3, characterized in that: The exhaust fan (6) is fixedly connected to the inner wall of the tower shell (1) via a connecting shaft and is located between the filter plate (5) and the dispersion pipe (9).

5. A novel chemical oil refining desulfurization tower according to claim 1, characterized in that: A plurality of spray channels (11) are vertically penetrated inside the spray cylinder (10), and the plurality of spray channels (11) are arranged in a spiral shape.

6. A novel chemical oil refining desulfurization tower according to claim 5, characterized in that: A spray pipe (12) is arranged inside the inner wall of the lower end of the spray channel (11); the upper end of the spray pipe (12) is connected to the dispersion pipe (9) and the lower end is closed.

7. A novel chemical oil refining desulfurization tower according to claim 6, characterized in that: The upper end of the spray pipe (12) is connected to a plurality of spray heads (13), and the plurality of spray heads (13) are all arranged in a vertical state with their openings facing upward.

8. A novel chemical oil refining desulfurization tower according to claim 1, characterized in that: A plurality of the porous stones (7) are accumulated inside the tower shell (1) through a blocking net, and can be replaced by opening a sealing door cover arranged in the middle of the front end of the tower shell (1).

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