Storage dropwise adding equipment for glacial acetic acid
By using a combination of steam heating and filter cloth in glacial acetic acid storage equipment, the problem of glacial acetic acid crystallization at low temperatures is solved, ensuring the continuity of production and product quality.
Patent Information
- Application Number
- CN202420875075.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-25
AI Technical Summary
In the cold winter, glacial acetic acid cannot meet the normal production and use of ABS high-glue powder after crystallization, resulting in interruption of production.
A storage dropping equipment for glacial acetic acid is designed, including a storage tank, coil, steam heating system, filter plate and filter cloth. By combining steam heating and filter cloth with filter plate, the crystallization of glacial acetic acid is avoided and the dropping operation is realized.
It effectively avoids glacial acetic acid crystallization, ensures normal production under low temperature conditions, improves agglomeration indicators and product quality, and improves production efficiency.
Smart Images
Figure CN222361413U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to storage and dripping equipment for glacial acetic acid. Background Art
[0002] In the production process of ABS high-rubber powder, the first step is to add butadiene (BD), styrene (ST) and emulsifier into the polymerization kettle to generate SBR latex, and the latex particle size is ≥80nm; the second step is to agglomerate the latex with a particle size of ≥80nm into a latex with a particle size of ≥310nm by expanding the diameter. The agglomeration method used in this method is acid-base agglomeration, where the acid refers to glacial acetic acid, and its content is ≥98%. The glacial acetic acid content of more than 98% can be considered as pure acetic acid. This acetic acid is liquid above 14℃ and solid below 14℃. In the cold winter, glacial acetic acid is crystallized by cold and cannot meet the normal production use. Utility Model Content
[0003] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a storage and dripping device for glacial acetic acid, which can solve the technical problem that glacial acetic acid cannot meet normal production and use after being cooled and crystallized in the cold winter.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A storage and dripping device for glacial acetic acid comprises a storage tank, wherein a manhole is provided at the center of the top of the storage tank, a suction pipe and a vacuum pipe are provided on both sides of the manhole, a vacuum pump is provided on the vacuum pipe, a coil is provided inside the storage tank, two ends of the coil respectively penetrate through the outer wall of the storage tank and are connected with a steam inlet pipeline and a steam outlet pipeline, a weighing module is provided at the bottom of the storage tank, and a configuration tank is connected to the bottom of the storage tank through a dripping pipeline, and a pneumatic valve is provided on the dripping pipeline.
[0006] Preferably, a filter plate is further provided in the storage tank, the filter plate is located above the coil, a plurality of filter holes are opened on the plate surface of the filter plate, a filter cloth is provided on the filter plate, and the filter mesh number of the filter cloth is 80-100 meshes.
[0007] Preferably, the filter cloth is detachably connected to the filter holes on the filter plate.
[0008] Preferably, the lower opening of the coil is connected to the steam inlet pipeline, and the upper opening is connected to the steam outlet pipeline.
[0009] Preferably, the storage tank is a steel-lined PE storage tank, and the coil and filter plate are both made of PE material.
[0010] Preferably, a vent pipe is also provided on the top of the storage tank.
[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model heats the glacial acetic acid by arranging a coil in the storage tank and passing steam into the coil, thereby avoiding the crystallization of glacial acetic acid caused by too low temperature and meeting the normal production requirements at low temperature; at the same time, the glacial acetic acid is filtered by arranging a filter plate and a filter cloth, thereby improving the agglomeration index, improving the product quality and improving the product efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the filter plate structure of the utility model.
[0015] Description of reference numerals:
[0016] 1-storage tank, 2-manhole, 3-suction pipe, 4-vacuum pipe, 5-vacuum pump, 6-coil, 7-steam inlet pipeline, 8-steam outlet pipeline, 9-weighing module, 10-drip pipeline, 11-configuration tank, 12-pneumatic valve, 13-filter plate, 14-filter cloth, 15-vent pipe. DETAILED DESCRIPTION
[0017] The following is a detailed description of the invention of the utility model by way of examples in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.
[0018] like Figure 1 to Figure 2 As shown, the utility model provides a storage and dripping device for glacial acetic acid, including a storage tank 1, wherein the storage tank 1 is a steel-lined PE storage tank, and a manhole 2 is provided at the center of the top of the storage tank 1, and the internal situation of the storage tank 1 is conveniently observed by setting the manhole 2; a suction pipe 3 and a vacuum pipe 4 are provided on both sides of the manhole 2, and a vacuum pump 5 is provided on the vacuum pipe 4. When feeding, the suction pipe 3 is connected to a barrel containing glacial acetic acid raw materials, and the storage tank 1 is vacuumed by the vacuum pump 5, and the glacial acetic acid raw materials enter the storage tank 1 through the suction pipe 3 for storage; a vent pipe 15 is also provided on the top of the storage tank 1, and the vent pipe 15 is conducive to discharging the gas volatilized by the glacial acetic acid in the storage tank 1.
[0019] The storage tank 1 is provided with a coil 6, which is made of PE material. The upper and lower ends of the coil 6 respectively penetrate the outer wall of the storage tank 1 and are connected to a steam inlet pipeline 7 and a steam outlet pipeline 8. Specifically, the lower opening of the coil 6 is connected to the steam inlet pipeline 7, and the upper opening is connected to the steam outlet pipeline 8. In this embodiment, the heating of the coil 6 adopts a low-in and high-out method, mainly to avoid the occurrence of water hammer phenomenon, and make full use of the temperature difference of steam to improve the heating efficiency. This heating method can reduce energy loss and improve the operating stability of the equipment.
[0020] The storage tank 1 is also provided with a filter plate 13, which is made of PE material and is located above the coil 6. A plurality of filter holes are opened on the plate surface of the filter plate 13, and a filter cloth 14 is laid on the filter plate 13. The filter cloth 14 is tied to the filter holes on the filter plate 13 through a cloth strip, and the filter mesh number of the filter cloth 14 is 80 meshes. In this embodiment, the filter plate 13 is provided to support the filter cloth 14, and the filter cloth 14 is used to filter out impurities and floccules mixed in the glacial acetic acid barrel charge, thereby improving the accuracy of the glacial acetic acid and the agglomeration index.
[0021] A weighing module 9 is disposed at the bottom of the storage tank 1 , and a configuration tank 11 is connected to the bottom of the storage tank 1 via a dripping pipeline 10 , and a pneumatic valve 12 is disposed on the dripping pipeline 10 .
[0022] It also includes a DCS control system, which is used to adjust the opening of the pneumatic valve 12 according to the weight of the glacial acetic acid in the storage tank 1 to achieve the dripping operation conditions.
[0023] The specific operation is as follows: the dripping adopts the weight metering mode, that is, the weighing module 9 is installed at the bottom of the storage tank, the DCS control interface sets the dripping weight and the advance amount, and the decreasing signal of the tank weight is collected to enter the PID module for relevant calculations to control the opening of the pneumatic valve 12.
[0024] Working principle: First, turn on the vacuum pump 5 to evacuate the storage tank 1, and the barreled glacial acetic acid enters the storage tank 1 through the suction pipe 3 under the action of negative pressure for storage. When the glacial acetic acid first enters the storage tank 1, it is first filtered through the filter cloth 14 to filter out the impurities and flocs mixed in the glacial acetic acid, thereby improving the accuracy of the glacial acetic acid; the glacial acetic acid stored in the storage tank 1 is heated by the steam in the coil 6, thereby avoiding the crystallization of glacial acetic acid due to too low temperature, thus meeting the normal production requirements at low temperature, and the liquid glacial acetic acid is dripped through the pneumatic valve 12 and the weighing module 9 interlocked DCS control system for dripping.
[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and application concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A storage and dripping device for glacial acetic acid, comprising a storage tank (1), characterized in that: A manhole (2) is provided at the center of the top of the storage tank (1), and a suction pipe (3) and a vacuum pipe (4) are provided on both sides of the manhole (2), and a vacuum pump (5) is provided on the vacuum pipe (4). A coil (6) is provided inside the storage tank (1), and both ends of the coil (6) respectively penetrate the outer wall of the storage tank (1) and are connected to a steam inlet pipeline (7) and a steam outlet pipeline (8). A weighing module (9) is provided at the bottom of the storage tank (1), and the bottom of the storage tank (1) is connected to a configuration tank (11) via a dripping pipeline (10), and a pneumatic valve (12) is provided on the dripping pipeline (10).
2. A storage and dropping device for glacial acetic acid as claimed in claim 1, characterized in that: A filter plate (13) is further provided in the storage tank (1). The filter plate (13) is located above the coil (6). A plurality of filter holes are provided on the plate surface of the filter plate (13). A filter cloth (14) is provided on the filter plate (13). The filter cloth (14) has a filter mesh number of 80-100 meshes.
3. A storage and dropping device for glacial acetic acid as claimed in claim 2, characterized in that: The filter cloth (14) is detachably connected to the filter holes on the filter plate (13).
4. A storage and dropping device for glacial acetic acid as claimed in claim 1, characterized in that: The lower opening of the coil (6) is connected to a steam inlet pipeline (7), and the upper opening is connected to a steam outlet pipeline (8).
5. A storage and dropping device for glacial acetic acid as claimed in claim 2, characterized in that: The storage tank (1) is a steel-lined PE storage tank, and the coil (6) and the filter plate (13) are both made of PE material.
6. A storage and dropping device for glacial acetic acid as claimed in claim 1, characterized in that: The top of the storage tank (1) is also provided with a vent pipe (15).