TDI off gas conduit dryer

Abstract

The utility model discloses a TDI tail gas pipeline dryer, including jar body and jar cover, the inside of jar body is provided with the basket, and the basket is filled with drying agent, the top opening of jar body is provided with and buckled with jar cover, the top of the side wall of jar body is provided with four groups of connecting seat in round array, and the knuckle screw is rotatably connected through connecting bolt in connecting seat, and the knuckle screw is threadedly connected with the lifting ring nut, the edge of jar cover is provided with the clamping slot, the side wall of jar body is provided with the exhaust pipe simultaneously, and the bottom of jar body is provided with the air inlet pipe, the utility model adopts the cylindrical basket and fills the activated carbon drying agent, and sets up the air inlet hole in the side wall, and the contact area of tail gas and drying agent is increased significantly, thereby improve moisture absorption efficiency.

Description

Technical Field

[0001] This utility model relates to the X field, specifically a TDI exhaust gas duct dryer. Background Technology

[0002] TDI is an important raw material for polyurethane production, mainly used as a raw material and intermediate for polyurethane flexible foam, rigid foam, adhesives, coatings, sealants and a series of elastomers. TDA is also an important raw material for the preparation of TDI and various dyes and pharmaceutical intermediates, and has a broad market prospect. At the end of the TDI synthesis process, TDI is usually separated from the product mixture by distillation. The high-boiling-point solid residue or distillation residue discharged from the bottom of the distillation column after drying is commonly known as tar powder. Tar powder is a mixture composed of polymerized biuret, by-products and various impurities. Tail gas is generated during the synthesis of TDI, and it needs to be dried during treatment. Some pipeline dryers also exist in the existing technology.

[0003] For example, patent CN223276084U discloses a hydrogen dryer for a hydrogen production system, including a hydrogen dryer, a controller on the right side wall of the hydrogen dryer, an inlet pipe extending through the lower left side wall of the hydrogen dryer, an exhaust hood inside the upper part of the hydrogen dryer, an outlet pipe extending through the top of the hydrogen dryer, one end of the outlet pipe being connected to one end of the exhaust hood, a flow divider assembly on the lower part of the inner wall of the hydrogen dryer, and two sets of drying boxes on the inner wall of the hydrogen dryer. Drying holes are evenly opened on the outer walls of the two sets of drying boxes, and both sets of drying boxes are filled with activated carbon desiccant.

[0004] The aforementioned patented drying box, feeding pipe, discharging pipe, and sealing assembly, when used together, allow for easy replacement of the activated carbon desiccant inside the drying box. This enables rapid replacement when the drying effect of the activated carbon desiccant deteriorates, thereby improving the drying effect of hydrogen. However, the drawback of the aforementioned patent is that the contact area between the drying box and the gas is small, resulting in poor drying effect.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a TDI exhaust gas duct dryer to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The TDI exhaust gas duct dryer includes a tank and a lid. The tank contains a basket filled with desiccant. The lid is fastened to the top opening of the tank. Four sets of connecting seats are arranged in a circular array on the top side wall of the tank. Each connecting seat is rotatably connected to a hinged screw via connecting bolts, and a lifting eye nut is threaded onto the hinged screw. The lid has a groove on its edge. An exhaust pipe is connected to the side wall of the tank, and an air inlet pipe is connected to the bottom of the tank. A lower overlapping flange is integrally fixed to the middle of the inner wall of the tank. An upper overlapping flange is provided on the top outer wall of the basket, with the upper overlapping ring overlapping the lower overlapping flange. Several air inlet holes are evenly distributed on the side wall of the basket. A pressure plate, which is a perforated plate, is fixedly connected to the top of the basket. A pressure plate handle is also fixed to the top of the perforated plate to facilitate alignment of the pressure plate with the basket.

[0009] Furthermore, a cap handle is fixedly connected to the top of the can lid.

[0010] Furthermore, the desiccant is activated carbon.

[0011] Furthermore, both the exhaust pipe and the intake pipe are fixedly connected to connecting flanges at their ends.

[0012] Furthermore, an annular alignment ring is fixedly connected to the bottom of the pressure plate, and the bottom sidewall of the alignment ring is chamfered.

[0013] Furthermore, the bottom of the can lid presses against the top of the pressure plate handle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The activated carbon desiccant is placed in a columnar basket with air inlets on the side wall, which significantly increases the contact area between the exhaust gas and the desiccant, thereby improving the moisture absorption efficiency.

[0016] The tank lid can be quickly opened, closed, and locked using a combination of a hinged screw and a lifting eye nut. This design not only simplifies operation but also facilitates the overall lifting and transportation of the equipment. The alignment ring design at the bottom of the pressure plate further simplifies the assembly process of internal components.

[0017] The desiccant is stably placed by using the lower overlapping flange inside the tank to support the upper overlapping flange of the basket, and together with the top pressable mesh pressure plate, ensuring that the desiccant remains stable when airflow passes through, preventing it from shifting or pulverizing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the TDI exhaust gas duct dryer.

[0019] Figure 2This is a front view of the TDI exhaust gas duct dryer.

[0020] Figure 3 This is a side view of the TDI exhaust gas duct dryer.

[0021] Figure 4 This is a top view of the TDI exhaust gas duct dryer.

[0022] Figure 5 for Figure 1 A magnified view of a portion of point a.

[0023] Figure 6 for Figure 2 Sectional view along the AA direction.

[0024] Figure 7 for Figure 6 A magnified view of a section at point b. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] Please see Figure 1-7 The TDI exhaust gas duct dryer includes a tank body 1 and a tank cover 2; the tank body 1 is provided with a placement basket 6, which contains a desiccant, which is activated carbon.

[0027] The top opening of the tank body 1 is provided with and fastened with a tank lid 2, and a pipe cover handle 202 is fixedly connected to the top of the tank lid 2.

[0028] Specifically, the top of the side wall of the tank body 1 is provided with four sets of connecting seats 101 arranged in a circular array. The connecting seats 101 are rotatably connected to the hinge screws 103 by connecting bolts 102. The hinge screws 103 are threaded with eye nuts 104. At the same time, the edge of the tank cover 2 is provided with a slot 201.

[0029] During installation, the hinge screw 103 is turned upwards and positioned in the slot 201. Then, the lifting eye nut 104 is tightened to fix the tank cover 2 to the top of the tank body 1. At the same time, the lifting eye nut 104 can be used to easily lift the entire TDI exhaust gas pipeline dryer during installation.

[0030] Meanwhile, an exhaust pipe 3 is connected to the side wall of the tank body 1, and an air inlet pipe 4 is connected to the bottom of the tank body 1; in this scheme, the ends of the exhaust pipe 3 and the air inlet pipe 4 are both fixedly connected to a connecting flange 5.

[0031] The inner wall of the tank 1 is integrally and fixedly connected to the lower overlapping flange 105 in the middle. The top outer wall of the placement basket 6 is provided with an upper overlapping flange 601, and the upper overlapping ring 601 overlaps the lower overlapping flange 105. The side wall of the placement basket 6 is evenly provided with several air inlet holes, and the placement basket 6 is filled with activated carbon. Compared with the planar structure, this solution uses a columnar desiccant placement basket to hold the desiccant. The side wall of the desiccant placement basket is provided with through holes, so that its contact area with air is larger in the same space.

[0032] The top of the placement basket 6 is provided with a pressure plate 7, which is a perforated plate. The top of the perforated plate is fixedly connected to a pressure plate handle 701. In order to facilitate the alignment of the pressure plate 7 with the placement basket 6, an annular alignment ring 702 is also fixedly connected to the bottom of the pressure plate 7. The bottom sidewall of the alignment ring 702 is chamfered to facilitate the alignment of the pressure plate 7 with the placement basket 6.

[0033] At the same time, when the installation of this solution is completed, the bottom of the can lid 2 presses against the top of the pressure plate handle 701, so that the pressure plate 7 can press against the top of the placement basket 6.

[0034] When this utility model is in use, the exhaust gas of TDI enters the interior of the tank 1 through the air inlet pipe 4, enters the placement basket 6 through the air inlet hole on the side wall of the placement basket 6, absorbs moisture through the activated carbon in the placement basket 6, then flows upward through the mesh plate, and finally is discharged from the exhaust pipe 3.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A TDI exhaust gas duct dryer, comprising a tank and a tank cover; characterized in that, The canister contains a basket filled with desiccant. A lid is attached to the top of the canister. Four sets of connecting seats are arranged in a circular array on the top of the side wall of the canister. Each connecting seat is rotatably connected to a hinged screw via connecting bolts, and a lifting nut is threaded onto the hinged screw. A slot is provided on the edge of the lid. An exhaust pipe is connected to the side wall of the canister, and an air inlet pipe is connected to the bottom of the canister. A lower overlapping flange is integrally fixed to the middle of the inner wall of the canister. An upper overlapping flange is provided on the top outer wall of the basket, with the upper overlapping ring overlapping the lower overlapping flange. Several air inlet holes are evenly distributed on the side wall of the basket. A pressure plate, which is a perforated plate, is fixed to the top of the basket. A pressure plate handle is also fixed to the top of the perforated plate to facilitate alignment of the pressure plate with the basket.

2. The TDI exhaust gas duct dryer according to claim 1, characterized in that, The top of the can lid is fixedly connected to a pipe lid handle.

3. The TDI exhaust gas duct dryer according to claim 1, characterized in that, The desiccant is activated carbon.

4. The TDI exhaust gas duct dryer according to claim 1, characterized in that, Both the exhaust pipe and the intake pipe are fixedly connected to connecting flanges at their ends.

5. The TDI exhaust gas duct dryer according to claim 1, characterized in that, The bottom of the pressure plate is also fixedly connected to an annular alignment ring, the bottom sidewall of which is chamfered.

6. The TDI exhaust gas duct dryer according to claim 1, characterized in that, The bottom of the can lid presses against the top of the pressure plate handle.

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