Continuous mixing and reaction apparatus for desulfurization waste liquid

Abstract

The utility model belongs to the technical field of chemical equipment, concretely relates to a kind of continuous mixing reaction device of desulfurization waste liquid, and the device includes: reaction cylinder, its upper end is provided with liquid outlet, lower end is provided with liquid inlet;Several spoiler, set on the reaction cylinder inner wall;Liquid delivery pipe, for the catalyst to the reaction cylinder inside delivery, its liquid outlet end passes through the lateral wall of the reaction cylinder and is located below the spoiler;The liquid outlet end is provided with at least one liquid delivery hole, the opening direction of the liquid delivery hole is opposite to liquid inlet, to form reverse jet;And, the supply line at the liquid inlet and the inlet end of the liquid delivery pipe are respectively connected with corresponding metering pump, and each metering pump is continuously conveyed desulfurization waste liquid, catalyst in reaction cylinder according to fixed proportion respectively.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, and in particular relates to a continuous mixing and reaction device for desulfurization waste liquid. Background Technology

[0002] In chemical production processes such as wet desulfurization, a large amount of desulfurization wastewater rich in sulfides is generated. One of the core steps in treating this wastewater is to thoroughly mix it with specific reactants (such as acids, catalysts, etc.) and allow it to react chemically. Currently, this mixing and reaction process in industrial production commonly uses batch reaction vessels, such as stirred tanks or reaction vessels.

[0003] Traditional batch reaction vessels rely on mechanical stirring during material mixing, which is energy-intensive and prone to creating mixing dead zones. When the desulfurization wastewater and catalyst are not mixed evenly, the reaction time and efficiency of the desulfurization wastewater will be affected, leading to an increase in reaction time and consequently impacting production efficiency.

[0004] Therefore, how to solve the problem of uneven mixing of desulfurization waste liquid and catalyst, which leads to excessively long reaction time, is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one continuous mixing and reaction device for desulfurization wastewater.

[0007] In a first aspect, embodiments of this disclosure provide a continuous mixing and reaction apparatus for desulfurization wastewater, comprising: A reaction cylinder is provided with a liquid outlet at the upper end and a liquid inlet at the lower end, and the liquid inlet is connected to a supply pipeline. If a flow-disrupting plate is installed on the inner wall of the reaction cylinder; An infusion tube is used to deliver the catalyst into the reaction vessel, and its outlet end passes through the side wall of the reaction vessel and is located below the baffle plate. The outlet end is provided with at least one infusion hole, the opening direction of which faces the inlet to form a reverse jet; and, The supply pipeline and the inlet end of the delivery pipeline are respectively connected to corresponding metering pumps, and each metering pump continuously delivers desulfurization waste liquid and catalyst into the reaction cylinder according to a fixed ratio.

[0008] In one alternative embodiment, the baffles are arranged in multiple sets in an alternating pattern inside the reaction chamber.

[0009] In one alternative embodiment, the angle α between each of the baffles and the axis of the inner wall of the reaction vessel satisfies α = 30°~60°.

[0010] In one optional embodiment, the vertical distance between the connection points of two adjacent baffles and the reaction cylinder is H, where H is 0.5 to 1.5 times the cylinder diameter.

[0011] In one optional embodiment, the liquid outlet has multiple infusion holes, which are arranged in a uniform array.

[0012] In one alternative embodiment, the infusion tube is fixedly mounted to the side wall of the reaction vessel via a metal flange assembly.

[0013] Secondly, embodiments of this disclosure also provide a continuous mixing and reaction apparatus for desulfurization wastewater, comprising: The reaction cylinder has a liquid outlet at the upper end and a liquid inlet at the lower end. If a flow-disrupting plate is installed on the inner wall of the reaction cylinder; A continuous feeding unit is used to continuously feed desulfurization waste liquid and catalyst into the reaction tank at a fixed ratio.

[0014] In one optional implementation, the continuous feeding unit includes a metering pump, a supply line, and a delivery line; The supply pipeline is connected to the liquid inlet, and the liquid delivery end of the delivery pipe extends into the inner cavity of the cylinder and is located below the baffle. The supply pipeline and the infusion pipeline are each connected to an independent metering pump.

[0015] In one optional embodiment, the end of the infusion tube that extends into the inner cavity of the cylinder is provided with at least one infusion hole, the opening direction of which is opposite to the inlet to form a reverse jet.

[0016] In one optional embodiment, the infusion tube has multiple infusion holes at its end, which are arranged in a uniform array.

[0017] The beneficial effects of this utility model are that the desulfurization waste liquid continuous mixing reaction device adds desulfurization waste liquid and catalyst in a fixed ratio through a metering pump, and combined with the reverse jet design of the liquid inlet, the two undergo violent and thorough collision and mixing in the early stage of entering the reaction cylinder; the fluid after preliminary mixing is continuously sheared and divided by the baffle plate during the upward flow process. The baffle plate and the primary mixing of the reverse jet form a highly efficient multi-stage mixing system, thereby eliminating mixing dead zones and enabling the desulfurization waste liquid and catalyst to be uniformly mixed, so as to avoid excessively long reaction time.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a structural diagram of a continuous mixing and reaction device for desulfurization wastewater provided in an embodiment of this disclosure.

[0022] In the picture: 100. Reaction cylinder; 110. Liquid outlet; 120. Liquid inlet; 130. Baffle plate; 200. Infusion pipe; 210. Liquid outlet end; 211. Infusion hole; 300. Supply pipeline; 400. Metal flange assembly; 500. Metering pump. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed the following drawbacks of existing technologies: Traditional batch reaction vessels rely on mechanical stirring during material mixing. Because the initial dosages of both desulfurization wastewater and catalyst in the reaction vessel are relatively large, mechanical stirring easily creates mixing dead zones, leading to uneven mixing of the desulfurization wastewater and catalyst. This uneven mixing affects both the reaction time and efficiency of the desulfurization wastewater, increasing reaction time and consequently impacting production efficiency.

[0030] Based on the above research, this disclosure provides a continuous mixing reaction device for desulfurization waste liquid. The desulfurization waste liquid and catalyst are added in a fixed ratio by a metering pump. Combined with the reverse jet design of the liquid inlet, the dosage of both the desulfurization waste liquid and the catalyst is relatively small when they first come into contact, which facilitates uniform mixing. After the initial mixing, the fluid is continuously sheared and divided by the baffle plate during the upward flow, eliminating the mixing dead zone.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] See Figure 1 This disclosure provides a continuous mixing and reaction device for desulfurization wastewater, comprising: a reaction cylinder 100, with an outlet 110 at its upper end and an inlet 120 at its lower end, the inlet 120 being connected to a supply pipeline 300. The supply pipeline 300 is connected to a desulfurization wastewater supply tank and is used to continuously feed desulfurization wastewater into the reaction cylinder 100. After the desulfurization wastewater reacts with a catalyst in the reaction cylinder 100, it is discharged from the outlet 110 (e.g., ...). Figure 1 (As indicated by the middle arrow).

[0035] See also Figure 1A liquid delivery pipe 200 is also provided on the side wall of the reaction cylinder 100. This pipe 200 is perpendicular to the reaction cylinder 100, and its outlet end 210 passes through the side wall of the reaction cylinder 100 and faces the inlet 120, for introducing catalyst into the reaction cylinder 100. A metering pump 500 is connected to both the supply pipe 300 and the inlet end of the liquid delivery pipe 200, for continuously supplying desulfurization waste liquid and catalyst into the reaction cylinder 100 at a fixed ratio. The outlet end 210 is provided with at least one delivery hole 211, the opening direction of which faces the inlet 120 to form a counter-jet flow. By adding desulfurization waste liquid and catalyst at a fixed ratio through the metering pump 500, the initial mixing volume of the desulfurization waste liquid and catalyst is relatively small, facilitating uniform mixing. The inner wall of the reaction cylinder 100 is provided with several turbulence baffles 130, and the outlet end 210 of the liquid delivery pipe 200 is located below the turbulence baffles 130. When the desulfurization waste liquid and the catalyst collide and mix in the initial stage after entering the reaction cylinder 100, the initially mixed fluid is continuously sheared and divided by the turbulence baffles 130 during the upward flow, eliminating the mixing dead zone, thereby making the desulfurization waste liquid and the catalyst evenly mixed, so as to avoid the reaction time being too long.

[0036] See also Figure 1 In some embodiments, the baffles 130 are arranged in multiple sets in a staggered pattern inside the reaction cylinder 100. When the fluid (a mixture of desulfurization waste liquid and catalyst) flows from bottom to top through the reaction cylinder 100 under pumping power, it will continuously impact these staggered baffles 130. Each stage of the baffles 130 exerts a significant shearing and blocking effect on the fluid, forcing the fluid particles to change their direction and velocity, generating strong turbulence. Due to the staggered distribution, the fluid cannot pass through in a stable laminar flow state, but is constantly divided, merged, and further divided, so that the fresh contact surface between the catalyst and the waste liquid is continuously renewed, and the mixing efficiency is much higher than that of traditional mechanical stirring.

[0037] See also Figure 1 In some embodiments, each baffle 130 is not installed perpendicular or parallel to the inner wall of the reaction cylinder 100, but rather forms an acute angle α with the axis of the inner wall of the cylinder. This angle α is set to a range of 30° to 60°. The key function of this angle is that when the fluid flows axially, the baffle 130 can effectively guide and shear it, rather than simply blocking it. Within this angle range, the mixture of desulfurization waste liquid and catalyst, after being divided by the baffle 130, can generate vortices of appropriate size and sufficient intensity while maintaining smooth axial movement, allowing energy to be used efficiently in the mixing process, achieving an optimal balance between mixing uniformity and system energy consumption.

[0038] See also Figure 1In some embodiments, the vertical distance between the connection points of two adjacent baffles 130 and the reaction cylinder 100 is H, where H is 0.5 to 1.5 times the cylinder diameter. This arrangement optimizes the flow and mixing process of the desulfurization wastewater and catalyst mixture within the reaction cylinder 100, ensuring continuous and efficient full-process turbulent mixing while maintaining low flow resistance, thereby avoiding mixing gaps or areas of reduced mixing intensity. It should be noted that the optimization of the vertical spacing H is closely coupled and synergistically designed with technical features such as the staggered distribution of baffles 130 and the installation angle α of baffles 130. Appropriate spacing ensures that the multi-stage baffles 130 can operate efficiently as a whole system, allowing the initial uniform mixing provided by the "reverse jet" to be effectively maintained and enhanced by the subsequent "multi-stage static turbulence" system until the reaction is complete. The organic combination of these features constitutes a complete and efficient technical path for solving the core technical problems of "uniform mixing" and "excessive reaction time" in this invention.

[0039] See also Figure 1 In some embodiments, the end of the infusion tube 200 extending into the inner cavity of the reaction cylinder 100 does not have a single opening, but rather multiple infusion holes 211 arranged in a uniform array. Specifically, the array can be a ring array uniformly distributed circumferentially along the end of the infusion tube 200, or a matrix array uniformly arranged axially and circumferentially. The core purpose is to ensure that the reactant can be uniformly and symmetrically injected into the reaction cylinder 100 from multiple points. The combination of the uniform array arrangement of multiple infusion holes 211 and the reverse jet design upgrades the single reverse impact into a multi-point, wider-coverage reverse impact mixing, greatly enhancing the primary mixing effect.

[0040] See also Figure 1 In some embodiments, the infusion tube 200 is fixedly mounted to the side wall of the reaction vessel 100 via a metal flange assembly 400. The infusion port 211 of the infusion tube 200, as a critical component, is at risk of wear or blockage during long-term operation. The flange connection method allows for easy removal of the entire component from the side wall of the reaction vessel 100 simply by loosening the bolts on the metal flange when cleaning, inspection, or replacement of the infusion tube 200 is required, making maintenance extremely convenient.

[0041] See Figure 1 Some embodiments also provide a continuous mixing and reaction device for desulfurization wastewater, including: a reaction cylinder 100, with an outlet 110 at the upper end and an inlet 120 at the lower end; a flow disturbance plate 130 disposed on the inner wall of the reaction cylinder 100; and a continuous feeding unit for continuously feeding desulfurization wastewater and catalyst into the reaction cylinder 100 in a fixed ratio.

[0042] See also Figure 1In some embodiments, the continuous feeding unit includes a metering pump 500, a supply line 300, and a delivery line 200. The supply line 300 is connected to the inlet 120, and the delivery end of the delivery line 200 extends into the inner cavity of the cylinder and is located below the baffle 130. The supply line 300 and the delivery line 200 are each connected to an independent metering pump 500. The supply line 300 is used to feed desulfurization wastewater into the reaction cylinder 100, and the delivery line 200 is used to feed catalyst into the reaction cylinder 100. The metering pump 500 allows for precise control of the flow rates of the desulfurization wastewater and the catalyst, thereby achieving the core requirement of feeding in a fixed ratio.

[0043] See also Figure 1 In some embodiments, the end of the infusion pipe 200 extending into the inner cavity of the cylinder is provided with at least one infusion hole 211. The opening direction of the infusion hole 211 is opposite to that of the inlet 120 to form a counter-jet. The desulfurization waste liquid enters the reaction cylinder 100 from the bottom inlet 120, forming an upward-flowing main fluid. At the same time, the catalyst is sprayed into the reaction cylinder 100 in the form of a jet through the infusion hole 211 at the end of the infusion pipe 200. The opening direction of the infusion hole 211 is opposite to that of the bottom inlet 120, causing the catalyst jet to collide head-on with the rising waste liquid mainstream, forming "counter-jet mixing", which constitutes the first stage of high-intensity mixing. The initially mixed fluid flows upward under pressure and continuously impacts multiple sets of baffles 130 provided on the inner wall of the reaction cylinder 100. Each time the fluid passes through a baffle 130, it is sheared, divided, and its direction is changed, generating strong turbulence. By combining reverse jet primary mixing with multi-stage baffle 130 mixing, desulfurization waste liquid and catalyst can be fully mixed and reacted while flowing continuously in the pipeline without mechanical stirring.

[0044] In summary, this continuous mixing reaction device for desulfurization waste liquid uses metering pump 500 to add desulfurization waste liquid and catalyst in a fixed ratio. Combined with the reverse jet design of the liquid inlet 211, the two are violently and thoroughly mixed upon entering the reaction cylinder 100. As the initially mixed fluid flows upward, it is continuously sheared and divided by baffle plate 130. The baffle plate 130, together with the primary mixing of the reverse jet, forms a highly efficient multi-stage mixing system, thereby eliminating mixing dead zones and achieving uniform mixing of desulfurization waste liquid and catalyst to avoid excessively long reaction time.

[0045] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless the context clearly indicates otherwise. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0047] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0048] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0049] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A continuous mixing and reaction device for desulfurization wastewater, characterized in that, include: The reaction cylinder (100) has an outlet (110) at its upper end and an inlet (120) at its lower end, and the inlet (120) is connected to the supply pipeline (300); If the flow disturbance plate (130) is disposed on the inner wall of the reaction cylinder (100); An infusion tube (200) is used to deliver the catalyst into the reaction cylinder (100), and its outlet end (210) passes through the side wall of the reaction cylinder (100) and is located below the baffle plate (130); The outlet end (210) is provided with at least one infusion hole (211), the opening direction of which is opposite to that of the inlet (120) to form a reverse jet; and, The inlet ends of the supply pipeline (300) and the delivery pipeline (200) are respectively connected to corresponding metering pumps (500), and each metering pump continuously delivers desulfurization waste liquid and catalyst into the reaction cylinder (100) according to a fixed ratio.

2. The continuous mixing and reaction device for desulfurization wastewater as described in claim 1, characterized in that, The baffles (130) are arranged in multiple staggered groups inside the reaction cylinder (100).

3. The continuous mixing and reaction device for desulfurization wastewater as described in claim 1, characterized in that, The angle α between each of the aforementioned baffles (130) and the axis of the inner wall of the reaction cylinder (100) satisfies α = 30°~60°.

4. The continuous mixing and reaction device for desulfurization wastewater as described in claim 1, characterized in that, The vertical distance between the connection points of two adjacent baffles (130) and the reaction cylinder (100) is H, where H is 0.5 to 1.5 times the diameter of the cylinder.

5. The continuous mixing and reaction device for desulfurization wastewater as described in claim 1, characterized in that, The liquid outlet (210) has multiple infusion holes (211) arranged in a uniform array.

6. The continuous mixing and reaction device for desulfurization wastewater as described in claim 1, characterized in that, The infusion tube (200) is fixedly installed on the side wall of the reaction cylinder (100) via a metal flange assembly (400).

7. A continuous mixing and reaction device for desulfurization wastewater, characterized in that, include: The reaction cylinder (100) has an outlet (110) at its upper end and an inlet (120) at its lower end. If the flow disturbance plate (130) is disposed on the inner wall of the reaction cylinder (100); A continuous feeding unit is used to continuously feed desulfurization waste liquid and catalyst into the reaction cylinder (100) at a fixed ratio.

8. The continuous mixing and reaction device for desulfurization wastewater as described in claim 7, characterized in that, The continuous feeding unit includes a metering pump (500), a supply line (300), and a delivery line (200). The supply pipeline (300) is connected to the inlet (120), and the inlet end of the inlet pipe (200) extends into the inner cavity of the cylinder and is located below the baffle (130). The supply line (300) and the infusion line (200) are each connected to an independent metering pump (500).

9. The continuous mixing and reaction device for desulfurization wastewater as described in claim 8, characterized in that, The end of the infusion tube (200) that extends into the inner cavity of the cylinder is provided with at least one infusion hole (211), and the opening direction of the infusion hole (211) is opposite to that of the inlet (120) to form a reverse jet.

10. The continuous mixing and reaction device for desulfurization wastewater as described in claim 9, characterized in that, The infusion tube (200) has multiple infusion holes (211) at its end, which are arranged in a uniform array.

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