Desulfurization device

Abstract

The utility model relates to the technical field of chemical engineering devices, and discloses a desulfurization device which comprises a desulfurization reaction unit and a water scrubber, the desulfurization reaction unit is provided with a desulfurized material output port, the lower end of the water scrubber is provided with a to-be-washed material input port, and the desulfurized material output port is communicated with the to-be-washed material input port; the desulfurization reaction unit is also provided with a to-be-desulfurized material input port and a first desulfurizer injection port, and the water washing tower is used for washing off a desulfurizer carried by the desulfurized material. The utility model has the following technical effects: the water washing tower is arranged at the downstream of the desulfurization reaction unit, so that a desulfurizing agent and individual impurities carried in desulfurized materials can be washed away, the purity of the materials is effectively improved, the normal and stable production process can be ensured when the device is applied to the production of downstream products, and the production efficiency is improved. And meanwhile, the production quality of downstream products is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and in particular relates to a desulfurization device. Background Art

[0002] In the production process of chemical products, some reaction by-products can be used in the production of downstream products, but some of these by-products are mixed with impurities such as carbon disulfide or sulfide and cannot meet the production requirements of downstream products. Therefore, it is necessary to set up a desulfurization device to desulfurize these by-products so that they can be fully used in the production of downstream products and improve the utilization rate of production resources.

[0003] Existing desulfurization devices remove sulfur-containing impurities entrained in the material by mixing and reacting the material to be desulfurized with the desulfurizer. Although the desulfurization effect can be achieved, some desulfurizer will be entrained in the desulfurized product. When it is put into the production of downstream products, it will not only affect the normal and stable progress of the production process, but also affect the quality of downstream products. Utility Model Content

[0004] In order to solve the shortcomings of the prior art, the utility model provides a desulfurization device, which arranges a water washing tower downstream of the desulfurization reaction unit to wash away the desulfurizer and individual impurities entrained in the desulfurized material, so that when it is used in the production of downstream products, it can ensure the normal and stable progress of the production process and improve the quality of the downstream products.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] The utility model provides a desulfurization device, comprising a desulfurization reaction unit and a water washing tower, wherein the desulfurization reaction unit is provided with a desulfurized material output port, and the lower end of the water washing tower is provided with a material input port to be washed with water, and the desulfurized material output port is connected with the material input port to be washed with water;

[0007] The desulfurization reaction unit is also provided with a material input port for desulfurization and a first desulfurization agent injection port, and the water washing tower is used to wash away the desulfurization agent entrained in the material after desulfurization.

[0008] As a further description of the technical solution of the utility model, the desulfurization reaction unit includes a reaction pipe for mixing and contacting the material to be desulfurized with the desulfurizer, the reaction pipe includes a first end, a second end and a main part located between the first end and the second end, the material to be desulfurized input port and the first desulfurizer injection port are both connected to the first end, and the desulfurized material output port is connected to the second end.

[0009] As a further description of the technical solution of the utility model, the main part is coiled multiple times along the horizontal direction and the vertical direction to form a laminated structure.

[0010] As a further description of the technical solution of the utility model, a plurality of mixing devices are arranged inside the reaction pipe.

[0011] As a further description of the technical solution of the utility model, the desulfurization reaction unit is provided with a plurality of second desulfurization agent injection ports, and the second desulfurization agent injection ports are connected to the main part.

[0012] As a further description of the technical solution of the utility model, the desulfurization reaction unit is provided with a first hot water injection port, and the first hot water injection port is connected to the first end.

[0013] As a further description of the technical solution of the utility model, the desulfurization reaction unit is also provided with a second hot water injection port, and the second hot water injection port is connected to the main part.

[0014] As a further description of the technical solution of the utility model, a fresh water input port is provided at the upper end of the water washing tower.

[0015] As a further description of the technical solution of the utility model, the upper end of the water washing tower is also provided with a port for outputting washed materials, and the lower end of the water washing tower is provided with a port for discharging wastewater.

[0016] As a further description of the technical solution of the utility model, the desulfurization reaction unit includes a desulfurization agent storage tank connected to the first desulfurization agent injection port, and a desulfurization agent injection pump is connected between the desulfurization agent storage tank and the first desulfurization agent injection port.

[0017] In summary, the utility model has at least the following benefits:

[0018] The desulfurization device provided by the utility model arranges a water washing tower downstream of the desulfurization reaction unit, so that the desulfurizer and individual impurities carried in the desulfurized material can be washed away, thereby improving the purity of the desulfurized material, so that when it is used in the production of downstream products, it can ensure the normal and stable progress of the production reaction process, and at the same time, ensure the production quality of the downstream products, which is conducive to improving the quality of the downstream products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the desulfurization device of Example 1 of the utility model;

[0020] Figure 2 A top view of the desulfurization reaction unit of Example 1 of the utility model;

[0021] Figure 3It is a side view of the desulfurization reaction unit of Example 1 of the utility model;

[0022] Figure 4 It is a front view of the desulfurization reaction unit of Example 1 of the utility model;

[0023] Figure 5 It is a side view of the desulfurization reaction unit of Example 2 of the utility model;

[0024] Figure 6 It is a front view of the desulfurization reaction unit of Example 2 of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the desulfurization device of Example 3 of the utility model.

[0026] Markings in the figure:

[0027] 1. Desulfurization reaction unit; 11. Desulfurized material output port; 12. To-be-desulfurized material input port; 13. First desulfurizer injection port; 14. Reaction pipeline; 141. First end; 142. Second end; 143. Main unit; 144. Mixing device; 15. Second desulfurizer injection port; 16. First hot water injection port; 17. Second hot water injection port; 18. Desulfurizer storage tank; 19. Desulfurizer injection pump;

[0028] 2. Water washing tower; 21. Input port for materials to be washed; 22. Input port for fresh water; 23. Output port for materials after washing; 24. Wastewater discharge port. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] refer to Figures 1 to 4The desulfurization device provided in this embodiment includes a desulfurization reaction unit 1 and a water washing tower 2. The desulfurization reaction unit 1 is provided with a desulfurized material output port 11, and the lower end of the water washing tower 2 is provided with a material input port 21 to be washed with water. The desulfurized material output port 11 is connected to the material input port 21 to be washed with water. The desulfurization reaction unit 1 is also provided with a material input port 12 to be desulfurized and a first desulfurizing agent injection port 13. The water washing tower 2 is used to wash away the desulfurizing agent entrained in the desulfurized material. In some embodiments, the desulfurization reaction unit 1 can be a desulfurization skid.

[0033] In this embodiment, the material to be desulfurized is a gaseous material, for example, isoprene. The desulfurizer adopts an adsorption-type desulfurizer, for example, HL-301, HL-302 and HL-307. The adsorption-type desulfurizer removes the sulfur-containing substances in the material to be desulfurized by the principle of physical adsorption or chemical adsorption. The desulfurizer will not react with the material to be desulfurized, will not affect the properties of the material to be desulfurized, and therefore will not affect the production quality of downstream products. The adsorption-type desulfurizer has an efficient desulfurization effect, which can reduce the amount of desulfurizer while improving the desulfurization efficiency, thereby reducing production costs. In some embodiments, by controlling the desulfurization conditions of the desulfurization reaction unit 1, the desulfurization reaction unit 1 can also achieve the best desulfurization effect. Preferably, the amount of the desulfurizer is controlled to be 450-500ppm, the desulfurization time is 8-12min, the desulfurization temperature is 30-40°C, and the pressure is 0.25-0.3MPa.

[0034] The material to be desulfurized and the desulfurizer are fully mixed and contacted in the desulfurization reaction unit 1, so that the desulfurizer removes sulfur-containing substances such as carbon disulfide or sulfide in the material to be desulfurized, thereby achieving the purpose of desulfurization. Since the desulfurizer used is water-soluble, washing with the water washing tower 2 can achieve the purpose of removing the desulfurizer entrained in the material after desulfurization. At the same time, washing with the water washing tower 2 can also remove some other impurities mixed in the material after desulfurization.

[0035] By setting a water washing tower 2 downstream of the desulfurization reaction unit 1, the desulfurizer and individual impurities carried in the desulfurized material can be washed out, thereby improving the purity of the desulfurized material, so that when it is used in the production of downstream products, the production reaction process can be ensured to be normal and stable, while also ensuring the production quality of downstream products and improving the quality of downstream products.

[0036] As a further optimization, the desulfurization reaction unit 1 includes a reaction pipe 14 for mixing and contacting the material to be desulfurized with the desulfurizer, the reaction pipe 14 includes a first end 141, a second end 142 and a main part 143 located between the first end 141 and the second end 142, the material to be desulfurized input port 12 and the first desulfurizer injection port 13 are both connected to the first end 141, and the desulfurized material output port 11 is connected to the second end 142. It can be understood that the material to be desulfurized enters the first end 141 through the material to be desulfurized input port 12, the desulfurizer enters the first end 141 through the first desulfurizer injection port 13, the material to be desulfurized and the desulfurizer are mixed and contacted at the first end 141, and then enter the main part 143 together, and finally the desulfurized material reaches the second end 142 and is output from the desulfurized material output port 11. Since the main part 143 has a certain length, it takes a certain amount of time for the desulfurized material and the desulfurizer to pass through the main part 143, thereby prolonging the contact time between the desulfurized material and the desulfurizer, making the removal of sulfur-containing substances more complete and enhancing the desulfurization effect.

[0037] As a further optimization, the main part 143 is coiled multiple times in the horizontal and vertical directions to form a laminated structure. As one embodiment, the main part 143 is first coiled multiple times in the horizontal direction to form a first layer structure, and then the main part 143 is coiled to a certain height in the vertical direction, and then coiled multiple times in the horizontal direction to form a second layer structure, and so on, finally forming a laminated structure with five layers. By coiling the main part 143 to form a laminated structure, the length of the main part 143 can be greatly increased, further extending the contact time between the material to be desulfurized and the desulfurizer, enhancing the desulfurization effect, and at the same time, it is also beneficial to reduce the occupied space of the desulfurization reaction unit 1.

[0038] As a further optimization, a plurality of mixing devices 144 are arranged inside the reaction pipe 14. As one embodiment, 9 mixing devices 144 can be arranged inside the reaction pipe 14, and they are distributed in the main part 143, and there is a certain distance between two adjacent mixing devices 144. The mixing device 144 is a static mixer. In the present embodiment, the mixing device 144 adopts an SK type static mixer. It can be understood that the SK type static mixer has a spiral packing section. When the material to be desulfurized and the desulfurizer pass through the mixing device 144 together, the two continuously collide with each other in the spiral packing structure, thereby improving the adequacy of the contact and mixing between the material to be desulfurized and the desulfurizer, making the removal of sulfur-containing substances more thorough, and further improving the desulfurization effect.

[0039] Since the material to be desulfurized and the desulfurizer mainly converge at the position of the first end 141, the desulfurization process in which the two are mixed and contacted follows, and the convergence point is unique. Therefore, during the desulfurization process, it is easy for the desulfurizer and the material to be desulfurized to be mixed unevenly, and the desulfurization effect cannot be ensured. In order to avoid this situation, the convergence point can be increased, and a plurality of second desulfurizer injection ports 15 can be set in the desulfurization reaction unit 1, and the second desulfurizer injection ports 15 are connected to the main part 143. As one embodiment, the desulfurization reaction unit 1 is provided with two second desulfurizer injection ports 15, and the two second desulfurizer injection ports 15 are both located in the first layer of the laminated structure formed by winding the main part 143.

[0040] It can be understood that when the material to be desulfurized flows through this part 143, desulfurizer will be injected into the second desulfurizer injection port 15, and the material to be desulfurized will be mixed with the introduced desulfurizer again, thereby improving the uniformity and sufficiency of the mixing of the material to be desulfurized and the desulfurizer, which helps to further improve the desulfurization efficiency and enhance the desulfurization effect.

[0041] In some embodiments, both the first desulfurizer injection port 13 and the second desulfurizer injection port 15 are provided with regulating valves, and the opening of the regulating valves can be adjusted according to actual production needs, that is, set to fully open or half open, etc., so as to control the desulfurizer injection amount of different injection ports, so that the desulfurization device can achieve the best desulfurization effect.

[0042] The desulfurization device of the present embodiment, by providing a water washing tower to wash away the desulfurizer and other impurities entrained in the material after desulfurization, thereby ensuring the normal and stable progress of the downstream product production process and improving the quality of the downstream products at the same time; by providing a reaction pipe and winding the reaction pipe to form a stacked structure, the contact time between the material to be desulfurized and the desulfurizer is prolonged, and the adequacy of desulfurization is improved; by providing a mixing device in the reaction pipe, the uniformity of mixing the material to be desulfurized and the desulfurizer can be improved, and the desulfurization efficiency can be improved; by providing a second desulfurizer injection port, the confluence point of the desulfurizer and the material to be desulfurized can be increased, thereby improving the mixing uniformity and adequacy of the material to be desulfurized and the desulfurizer, improving the desulfurization efficiency, and enhancing the desulfurization effect. By using the desulfurization device of the present embodiment to desulfurize the material to be desulfurized, a desulfurization effect of sulfur-containing substances ≤5ppm (wt%) in the material after desulfurization can be achieved.

[0043] Example 2

[0044] As a further optimization of Example 1, refer to Figures 5 and 6The desulfurization reaction unit 1 is provided with a first hot water injection port 16, and the first hot water injection port 16 is connected to the first end 141. Since the temperature of the desulfurization reaction unit 1 is relatively low in the initial activation state, a small amount of crystallized salt is easily precipitated in the process of the desulfurizer and the material to be desulfurized entering the reaction pipe 14. As the use time accumulates, the crystallized salt remaining in the reaction pipe 14 will also accumulate, thereby causing the reaction pipe 14 to be blocked, and increasing the maintenance cost of the desulfurization device. By providing the first hot water injection port 16, hot water is injected from the first end 141 into the reaction pipe 14 to flush the reaction pipe 14, which can remove the crystallized salt accumulated in the reaction pipe 14, effectively prevent the blockage of the reaction pipe 14, and reduce the maintenance cost of the desulfurization device.

[0045] It should be noted that hot water is injected into the first hot water injection port 16 only when the reaction pipe 14 needs to be flushed, and during the flushing process of the reaction pipe 14, the desulfurized material input port 12 stops inputting the desulfurized material, and the first desulfurizer injection port 13 stops injecting the desulfurizer, that is, the desulfurization process is terminated. When the flushing of the reaction pipe 14 is completed, the desulfurization operation is restarted.

[0046] As a further optimization, the desulfurization reaction unit 1 is further provided with a second hot water injection port 17, which is connected to the main part 143. It can be understood that the hot water injected by the second hot water injection port 17 enters the main part 143, merges with the hot water injected from the first end 141, and is transported to the second end 142 and then discharged. By providing the second hot water injection port 17, the hot water flow in the reaction pipe 14 can be increased, so that the crystallized salt can be removed more fully and thoroughly, which is conducive to improving the flushing effect and ensuring the dredging degree of the reaction pipe 14.

[0047] Example 3

[0048] As a further optimization of Example 2, refer to Figure 7 , a fresh water input port 22 is provided at the upper end of the water washing tower 2. In some embodiments, a fresh water spraying assembly is provided at a position corresponding to the fresh water input port 22 in the water washing tower 2, which is used to spray the fresh water input from the fresh water input port 22 downward. It can be understood that the material to be washed is a gaseous material, which enters the water washing tower 2 from the material to be washed input port 21 and is transported upward toward the top of the water washing tower 2, while fresh water is input from the fresh water input port 22 and sprayed downward. Through the reverse contact between the material to be washed and the fresh water, the effect of removing the desulfurizer from the material to be washed can be achieved.

[0049] In some embodiments, a packing layer may be provided in the washing tower 2, and the packing layer is located between the fresh water input port 22 and the material to be washed input port 21. The packing layer may increase the contact area and contact time between the fresh water and the material to be washed, thereby improving the washing efficiency and achieving a better washing effect.

[0050] Furthermore, a washed material output port 23 is provided at the upper end of the water washing tower 2, and the washed material output port 23 is located above the fresh water input port 22. A wastewater discharge port 24 is provided at the lower end of the water washing tower 2, and the wastewater discharge port 24 is located below the material input port 21 to be washed. In some embodiments, the washed material output port 23 can directly transport the washed material to the downstream production reaction system, or transport the washed material to a material storage tank for temporary storage.

[0051] In some embodiments, the desulfurization reaction unit 1 further includes a desulfurization agent storage tank 18 connected to the first desulfurization agent injection port 13, and a desulfurization agent injection pump 19 is connected between the desulfurization agent storage tank 18 and the first desulfurization agent injection port 13. The desulfurization agent in the desulfurization agent storage tank 18 is pressed into the first desulfurization agent injection port 13 by the desulfurization agent injection pump 19, which is conducive to promoting the contact between the material to be desulfurized and the desulfurization agent, and improving the desulfurization efficiency.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0054] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A desulfurization device, characterized in that: The invention comprises a desulfurization reaction unit (1) and a water washing tower (2), wherein the desulfurization reaction unit (1) is provided with a desulfurized material output port (11), and the lower end of the water washing tower (2) is provided with a material input port (21) for water washing, and the desulfurized material output port (11) is connected to the material input port (21) for water washing; The desulfurization reaction unit (1) is also provided with a material input port (12) for desulfurization and a first desulfurization agent injection port (13), and the water washing tower (2) is used to wash away the desulfurization agent entrained in the material after desulfurization.

2. The desulfurization device according to claim 1, characterized in that: The desulfurization reaction unit (1) comprises a reaction pipe (14) for mixing and contacting a material to be desulfurized with a desulfurizing agent, the reaction pipe (14) comprising a first end (141), a second end (142) and a main portion (143) located between the first end (141) and the second end (142), the material to be desulfurized input port (12) and the first desulfurizing agent injection port (13) are both connected to the first end (141), and the desulfurized material output port (11) is connected to the second end (142).

3. The desulfurization device according to claim 2, characterized in that: The main part (143) is coiled multiple times in the horizontal direction and the vertical direction to form a laminated structure.

4. The desulfurization device according to claim 2, characterized in that: A plurality of mixing devices (144) are arranged inside the reaction pipe (14).

5. The desulfurization device according to claim 2, characterized in that: The desulfurization reaction unit (1) is provided with a plurality of second desulfurization agent injection ports (15), and the second desulfurization agent injection ports (15) are connected to the main part (143).

6. The desulfurization device according to claim 2, characterized in that: The desulfurization reaction unit (1) is provided with a first hot water injection port (16), and the first hot water injection port (16) is connected to the first end (141).

7. The desulfurization device according to claim 6, characterized in that: The desulfurization reaction unit (1) is also provided with a second hot water injection port (17), and the second hot water injection port (17) is connected to the main part (143).

8. The desulfurization device according to claim 1, characterized in that: A fresh water input port (22) is provided at the upper end of the water washing tower (2).

9. The desulfurization device according to claim 8, characterized in that: The upper end of the water washing tower (2) is also provided with a material output port (23) after water washing, and the lower end of the water washing tower (2) is provided with a wastewater discharge port (24).

10. The desulfurization device according to claim 1, characterized in that: The desulfurization reaction unit (1) comprises a desulfurization agent storage tank (18) connected to the first desulfurization agent injection port (13), and a desulfurization agent injection pump (19) is connected between the desulfurization agent storage tank (18) and the first desulfurization agent injection port (13).

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