Formaldehyde absorption tower redistribution device
By installing baffles and concave liquid phase collectors inside the formaldehyde absorption tower, the problems of uneven gas-liquid distribution and insufficient absorption were solved, achieving uniform distribution of the reaction liquid and improving absorption efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI YIHUA FINE CHEMICAL CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-19
AI Technical Summary
Existing formaldehyde absorption towers suffer from uneven gas-liquid distribution and insufficient absorption, leading to increased pressure drop and power consumption.
A baffle and multiple concave liquid phase collectors are installed inside the formaldehyde absorption tower. The concave liquid phase collectors collect the reaction liquid and introduce it into the packing layer to achieve buffering and redistribution of the reaction liquid. This works in conjunction with the original reaction liquid distributor and packing layer.
This achieves uniform contact between the reaction liquid and the packing layer, preventing uneven gas-liquid distribution and increased pressure drop, thus improving absorption efficiency.
Smart Images
Figure CN224252485U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, and in particular to a formaldehyde absorption tower redistribution device. Background Technology
[0002] A formaldehyde absorption tower is a device that mixes formaldehyde vapor with absorption solutions of other concentrations to obtain a formaldehyde solution of suitable concentration. In the formaldehyde absorption tower, the gas moves upwards, while the absorption liquid flows downwards; the two flow counter-currently to prepare the formaldehyde solution.
[0003] Formaldehyde is produced by the oxidation of methanol. The formaldehyde gas generated by the oxidation reaction is further absorbed by the replenishment liquid in an absorption tower to form a formaldehyde solution. During the absorption process, the height of the absorption tower packing and the circulation rate are crucial to ensure the absorption rate. However, if the height of the single-layer packing of the absorption tower is too high, it will lead to uneven gas-liquid distribution and increased pressure drop, resulting in flooding and other hazards. If the height of the single-layer packing of the absorption tower is too low, the absorption will be insufficient. On the other hand, increasing the circulation section will increase the power consumption. Utility Model Content
[0004] Based on the above description, this utility model provides a formaldehyde absorption tower redistribution device to solve the technical problems of uneven gas-liquid distribution and insufficient absorption in existing absorption towers.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0006] A formaldehyde absorption tower redistribution device includes: a packing layer, a partition plate, and concave liquid phase collectors; the packing layer is disposed inside the formaldehyde absorption tower; the partition plate is disposed parallel to the upper end of the packing layer; a plurality of the concave liquid phase collectors are fixed on the partition plate; the reaction liquid collected by the concave liquid phase collectors is introduced into the packing layer.
[0007] Based on the above technical solution, the present invention can be further improved as follows.
[0008] Further: The concave liquid phase collector includes: a collection tank and a support leg; the collection tank is fixed to the partition plate by the support leg, and the lower end of the support leg passes through the partition plate; the support leg is a hollow structure with both ends penetrating through; the collection tank is V-shaped, and the four sides of the collection tank are set at the same height; multiple overflow ports are respectively opened on the two opposite long sides of the collection tank; the reaction liquid collected in the collection tank flows into the packing layer through the overflow port and the inside of the support leg.
[0009] Furthermore, the plurality of the concave liquid phase collectors are parallel to each other.
[0010] Furthermore, the plurality of the concave liquid phase collectors are equidistantly distributed.
[0011] Furthermore, the opening angle of the collection trough is 120°.
[0012] Furthermore, the multiple overflow ports are set at the same height.
[0013] Compared with the prior art, the technical solution of this utility model has the following beneficial technical effects:
[0014] The formaldehyde absorption tower redistribution device provided by this utility model includes a packing layer disposed inside the formaldehyde absorption tower, with baffles arranged parallel to the upper end of the packing layer, and multiple concave liquid phase collectors fixed on the baffles; the reaction liquid collected by the concave liquid phase collectors is introduced into the packing layer. This formaldehyde absorption tower redistribution device works in conjunction with the original reaction liquid distributor and packing layer in the formaldehyde reaction tower. The reaction liquid collected by the V-shaped concave liquid phase collectors is introduced into the packing layer, realizing the buffering and redistribution of the reaction liquid, allowing the reaction liquid to continuously contact the packing layer below. This prevents the technical problems of uneven gas-liquid distribution and increased pressure drop caused by the original reaction liquid distributor in the formaldehyde absorption tower directly spraying a large amount of reaction liquid onto the packing layer. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the formaldehyde absorption tower redistribution device provided in an embodiment of the present invention;
[0016] Figure 2 A top view of the formaldehyde absorption tower redistribution device provided in an embodiment of this utility model;
[0017] Figure 3 A schematic diagram of the concave liquid phase collector structure provided in an embodiment of this utility model.
[0018] The attached diagram lists the components represented by each number as follows:
[0019] 1-Baffle plate, 2-Concave liquid phase collector, 21-Overflow port, 22-Collection tank, 23-Support leg. Detailed Implementation
[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0022] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.
[0023] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediary element.
[0024] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.
[0025] See Figure 1 and Figure 2 This utility model provides a formaldehyde absorption tower redistribution device, including: a packing layer, a baffle plate 1, and a concave liquid phase collector 2. The packing layer is disposed inside the formaldehyde absorption tower and is located below the original reaction liquid distributor of the formaldehyde absorption tower. The packing layer is configured with a shape that matches the formaldehyde absorption tower and is horizontally arranged.
[0026] A partition plate 1 is arranged parallel to the upper end of the packing layer and is fixedly connected to the inner wall of the formaldehyde absorption tower. The partition plate 1 mainly provides support for the concave liquid phase collectors 2. Multiple concave liquid phase collectors 2 are fixed on the partition plate 1. To improve the redistribution effect of the reaction liquid, the multiple concave liquid phase collectors 2 are evenly distributed. The reaction liquid collected by the concave liquid phase collectors 2 is introduced into the packing layer.
[0027] In a preferred embodiment provided by this utility model, see [link to previous embodiment]. Figures 1-3 The concave liquid phase collector 2 includes a collection tank 22 and a support leg 23. The collection tank 22 is fixed to the partition plate 1 by the support leg 23, and the lower end of the support leg 23 passes through the partition plate 1. The support leg 23 is a hollow structure with both ends penetrating through it, and the hollow structure of the support leg 23 is used to transport the reaction liquid to the packing layer. In this embodiment, the collection tank 22 is V-shaped, the opening angle of the collection tank 22 is 120°, and the collection tank 22 is elongated. The four sides of the collection tank 22 are set at the same height for collecting the reaction liquid. Multiple overflow ports 21 are opened on the two opposite long sides of the collection tank 22, and the reaction liquid collected by the collection tank 22 flows into the packing layer through the overflow ports 21 and the inside of the support leg 23.
[0028] To further improve the redistribution of the reaction liquid and ensure uniform contact between the reaction liquid and the packing layer to guarantee the reaction effect, a preferred embodiment of this invention can be further improved as follows: Multiple concave liquid phase collectors 2 are arranged parallel to each other and equidistantly distributed. This design improves the uniformity of contact between the reaction liquid received by the concave liquid phase collectors 2 and the packing layer below. Furthermore, the overflow ports 21 can be set at the same height so that the reaction liquid collected by the concave liquid phase collectors 2 flows out at the same height, further improving the uniformity of contact between the reaction liquid and the packing layer below.
[0029] See Figures 1-3 The technical solution provided by this utility model embodiment has at least the following beneficial technical effects or advantages:
[0030] The formaldehyde absorption tower redistribution device provided in this embodiment includes a packing layer disposed inside the formaldehyde absorption tower. A baffle 1 is disposed parallel to the upper end of the packing layer, and multiple concave liquid phase collectors 2 are fixed on the baffle 1. The reaction liquid collected by the concave liquid phase collectors 2 is introduced into the packing layer. This formaldehyde absorption tower redistribution device works in conjunction with the original reaction liquid distributor and packing layer in the formaldehyde reaction tower. The reaction liquid collected by the V-shaped concave liquid phase collectors 2 is introduced into the packing layer, realizing the buffering and redistribution of the reaction liquid. This ensures that the reaction liquid is in continuous contact with the packing layer below, preventing the technical problems of uneven gas-liquid distribution and increased pressure drop caused by the original reaction liquid distributor in the formaldehyde absorption tower directly spraying a large amount of reaction liquid onto the packing layer.
[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A formaldehyde absorption tower redistribution device, characterized in that: include: Packing layer, baffle plate, and concave liquid phase collector; the packing layer is disposed inside the formaldehyde absorption tower; The partition is arranged parallel to the upper end of the filler layer; Multiple concave liquid phase collectors are fixed on the partition plate; the reaction liquid collected by the concave liquid phase collectors is introduced into the packing layer.
2. The formaldehyde absorption tower redistribution device according to claim 1, characterized in that: The concave liquid phase collector includes: a collection tank and a support leg; the collection tank is fixed to the partition plate by the support leg, and the lower end of the support leg passes through the partition plate; the support leg is a hollow structure with both ends penetrating through; the collection tank is V-shaped, and the four sides of the collection tank are set at the same height; multiple overflow ports are opened on the two opposite long sides of the collection tank; the reaction liquid collected in the collection tank flows into the packing layer through the overflow port and the inside of the support leg.
3. The formaldehyde absorption tower redistribution device according to claim 2, characterized in that: The plurality of the concave liquid phase collectors are parallel to each other.
4. The formaldehyde absorption tower redistribution device according to claim 3, characterized in that: The concave liquid phase collectors are equidistantly distributed.
5. The formaldehyde absorption tower redistribution device according to claim 2, characterized in that: The opening angle of the collection trough is 120°.
6. The formaldehyde absorption tower redistribution device according to any one of claims 2-5, characterized in that: The multiple overflow ports are set at the same height.