Tower for washing tetrabromobisphenol A

Abstract

The invention relates to the field of chemical equipment, and provides a tower for washing tetrabromobisphenol A. The tower comprises a first component settling area, a filler area and a second component settling area which are arranged from top to bottom, a water inlet and a first disperser are arranged at the lower end of the filler area, and the first disperser is fixedly connected with the inner side wall of the filler area; the first end of the water inlet is communicated with the first disperser, a feeding hole and a second disperser are arranged at the upper end of the filler area, the second disperser is fixedly connected with the inner side wall of the filler area, the first end of the feeding hole is communicated with the second disperser, and a first discharging hole is formed in the top of the first component settling area; a second discharging opening is formed in the bottom of the second component settling area, the diameter of the first component settling area is larger than that of the filling area, and the diameter of the second component settling area is larger than that of the filling area.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, in particular to a tower used for washing tetrabromobisphenol A. Background Art

[0002] The production process of tetrabromobisphenol A includes bromination, aging, neutralization, washing, crystallization, centrifugation, drying and other processes. Among them, the two processes of neutralization and washing are the processes of purifying the product liquid. After the bromination, aging and neutralization processes, a liquid close to white is obtained, which is composed of tetrabromobisphenol A, solvent and a small amount of sodium sulfate salt. The traditional tetrabromobisphenol A washing process is carried out in an intermittent manner, that is, the liquid and deionized water are injected into the washing kettle in a certain proportion, stirring and heating are turned on, and after a certain period of time, the layers are allowed to stand and the salt components such as sodium sulfate, sodium sulfite and sodium bromide are extracted into the deionized water. The whole process takes a long time and requires frequent manual operation and patrol observation. It usually takes more than one hour, and two to three levels of washing are required to achieve the corresponding indicators. Among them, the liquid separation operation is greatly affected by manual operation, and it is easy to separate the material phase into the water layer or the water layer into the material layer. The process lasts for a long time, and the consumption of deionized water is large, which destroys the continuity of the entire production process to a certain extent. It requires a lot of manual observation and operation, and the automation level is low. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a tower for washing tetrabromobisphenol A, which simplifies the work flow of the equipment, saves energy and improves work efficiency.

[0004] The present invention provides a tower for washing tetrabromobisphenol A, comprising: a first component sedimentation zone, a packing zone and a second component sedimentation zone arranged from top to bottom, a water inlet and a first disperser are arranged at the lower end of the packing zone, the first disperser is fixedly connected to the inner side wall of the packing zone, a first end of the water inlet is communicated with the first disperser, a feed inlet and a second disperser are arranged at the upper end of the packing zone, the second disperser is fixedly connected to the inner side wall of the packing zone, a first end of the feed inlet is communicated with the second disperser, a first discharge port is arranged at the top of the first component sedimentation zone, a second discharge port is arranged at the bottom of the second component sedimentation zone, a diameter of the first component sedimentation zone is larger than a diameter of the packing zone, and a diameter of the second component sedimentation zone is larger than a diameter of the packing zone.

[0005] A tower for washing tetrabromobisphenol A provided by the present invention further comprises a first metering pump and a second metering pump, wherein the first metering pump is arranged at the second end of the water inlet, and the second metering pump is arranged at the second end of the feed inlet.

[0006] A tower for washing tetrabromobisphenol A provided according to the present invention also includes a first extraction pump and a second extraction pump. The first end of the first discharge port is provided with the first extraction pump, and the first end of the second discharge port is provided with the second extraction pump.

[0007] A tower for washing tetrabromobisphenol A provided by the present invention further comprises a thermometer, which is fixedly arranged on the outer side wall of the second component settling zone.

[0008] A tower for washing tetrabromobisphenol A provided by the present invention further comprises two interface meters, which are arranged at intervals along the vertical direction on the outer side wall of the second component sedimentation zone.

[0009] According to a tower for washing tetrabromobisphenol A provided by the present invention, the packing area also includes a packing pressure plate and a packing receiving plate, the packing pressure plate is arranged at the top of the packing area, and the packing receiving plate is arranged at the bottom of the packing area.

[0010] According to a tower for washing tetrabromobisphenol A provided by the present invention, the first component settling area, the packing area and the second component settling area are all provided with manholes.

[0011] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: According to the tower for washing tetrabromobisphenol A in the embodiment of the present invention, an integrated water washing tower for feeding and discharging is provided, and the diameters of the first component sedimentation zone and the second component sedimentation zone are provided to be larger than the filling zone, thereby solving the problem that the liquid separation operation is greatly affected by manual labor, simplifying the work flow of the equipment, and at the same time, the material and deionized water are fully in contact, saving energy and improving work efficiency.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 The present invention is a schematic diagram of the structure of a tower used for washing tetrabromobisphenol A.

[0015] Reference numerals: 1. First component sedimentation zone; 11. First discharge port; 2. Filling zone; 21. Water inlet; 22. First disperser; 23. Feed port; 24. Second disperser; 25. Filling pressure plate; 26. Filling receiving plate; 3. Second component sedimentation zone; 31. Second discharge port; 4. Thermometer; 5. Interface meter; 6. Manhole. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme in the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in 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. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0017] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0019] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or 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 may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0021] Figure 1 The present invention is a schematic diagram of the structure of a tower used for washing tetrabromobisphenol A.

[0022] The present invention provides a tower for washing tetrabromobisphenol A, such as Figure 1 As shown, the tower used for washing tetrabromobisphenol A includes: a first component sedimentation zone 1, a packing zone 2 and a second component sedimentation zone 3 arranged from top to bottom, a water inlet 21 and a first disperser 22 are provided at the lower end of the packing zone 2, the first disperser 22 is fixedly connected to the inner side wall of the packing zone 2, and the first end of the water inlet 21 is communicated with the first disperser 22, a feed inlet 23 and a second disperser 24 are provided at the upper end of the packing zone 2, the second disperser 24 is fixedly connected to the inner side wall of the packing zone 2, and the first end of the feed inlet 23 is communicated with the second disperser 24, a first discharge port 11 is provided at the top of the first component sedimentation zone 1, and a second discharge port 31 is provided at the bottom of the second component sedimentation zone 3, the diameter of the first component sedimentation zone 1 is larger than the diameter of the packing zone 2, and the diameter of the second component sedimentation zone 3 is larger than the diameter of the packing zone 2.

[0023] In this embodiment, by setting up an integrated feeding and discharging water washing tower, and setting the diameters of the first component sedimentation zone 1 and the second component sedimentation zone 3 to be larger than the filling zone 2, the problem of the liquid separation operation being greatly affected by manual labor is solved, and the work flow of the equipment is simplified. At the same time, the material and deionized water are fully in contact, energy is saved, and work efficiency is improved.

[0024] According to some embodiments of the present invention, deionized water enters the first disperser 22 from the lower end of the packing area 2 through the water inlet 21, and the first disperser 22 disperses the deionized water at the lower end of the packing area 2. The material enters the second disperser 24 from the upper end of the packing area 2 through the feed inlet 23, and the second disperser 24 disperses the material at the upper end of the packing area 2. The deionized water moves upward, and the material moves downward to achieve countercurrent mixing. During the sufficient mixing process, the deionized water washes the material, and the deionized water drives the impurities to continue to move upward to the first component sedimentation area 1, and the second component sedimentation area 1 is further dispersed. The diameter of the first component sedimentation zone 1 increases and the rising speed decreases, which increases the washing time of the material, facilitates the separation of the material and deionized water, and prevents the deionized water from taking tetrabromobisphenol A away from the equipment. After sufficient washing, the deionized water continues to rise to the first discharge port 11, and the deionized water with impurities is discharged. Tetrabromobisphenol A continues to precipitate downward and precipitates to the second component sedimentation zone 3. The diameter of the second component sedimentation zone 3 increases and the precipitation speed decreases, which increases the washing time of the material, facilitates the separation and stratification of tetrabromobisphenol A and deionized water. After stratification is completed, tetrabromobisphenol A is collected from the second discharge port 31.

[0025] According to some embodiments of the present invention, the first component is a light component, which includes salt components such as sodium sulfate, sodium sulfite, and sodium bromide, and the second component is a heavy component, which includes tetrabromobisphenol A. The light component is discharged from the first discharge port along with deionized water, and the heavy component sinks to the second component sedimentation area and is collected from the second discharge port.

[0026] According to some embodiments of the present invention, the water washing of tetrabromobisphenol A is changed from multiple intermittent stirring tanks to a water washing tower with continuous feeding and discharging, thereby reducing the floor space occupied by the equipment.

[0027] According to a tower for washing tetrabromobisphenol A provided by the present invention, the tower for washing tetrabromobisphenol A also includes a first metering pump and a second metering pump, the first metering pump is arranged at the second end of the water inlet 21, and the second metering pump is arranged at the second end of the feed inlet 23.

[0028] In this embodiment, by setting up the first metering pump and the second metering pump, the water inlet and the feed are controlled by the first metering pump and the second metering pump respectively, the water inlet and the feed ratio are accurate, energy is saved and work efficiency is improved.

[0029] According to some preferred embodiments of the present invention, the water consumption per ton of product is reduced from about 1.2 tons to about 0.8 tons, the consumption index is reduced, and energy is saved.

[0030] According to a tower for washing tetrabromobisphenol A provided by the present invention, the tower for washing tetrabromobisphenol A also includes a first extraction pump and a second extraction pump, the first end of the first discharge port 11 is provided with the first extraction pump, and the first end of the second discharge port 31 is provided with the second extraction pump.

[0031] In this embodiment, by providing a first extraction pump and a second extraction pump, materials and deionized water with impurities are automatically collected, thereby realizing automation of the equipment.

[0032] According to a tower for washing tetrabromobisphenol A provided by the present invention, Figure 1 As shown, the tower for washing tetrabromobisphenol A further comprises a thermometer 4 , which is fixedly arranged on the outer side wall of the second component settling zone 3 .

[0033] In this embodiment, a thermometer 4 is provided to detect the temperature inside the second component sedimentation zone 3 in real time.

[0034] According to some preferred embodiments of the present invention, the temperature inside the second component settling zone 3 is controlled at 35°C.

[0035] According to a tower for washing tetrabromobisphenol A provided by the present invention, Figure 1 As shown, the tower for washing tetrabromobisphenol A further comprises two interface meters 5 , which are arranged on the outer side wall of the second component settling zone 3 at intervals in the vertical direction.

[0036] In this embodiment, two interface meters 5 are provided to achieve accurate control of the interface position, thereby preventing deionized water from entering the material layer and affecting product quality during the collection of tetrabromobisphenol A.

[0037] According to some embodiments of the present invention, two interface meters 5 are provided to ensure that the interface layer is located between the two interface meters 5, and the two interface meters 5 are electrically connected to the second extraction pump. When the interface is higher than the upper interface meter 5, the second extraction pump works, and when the interface is lower than the lower interface meter 5, the second extraction pump stops working, thereby avoiding the separation of deionized water into tetrabromobisphenol A and affecting product quality.

[0038] According to some preferred embodiments of the present invention, the interface meter 5 adopts an oil-water interface meter, which uses the principle of ultrasonic echo detection to detect the distance between the sensor probe and the oil-water interface and the distance between the bottom surface, thereby realizing real-time monitoring of interface position changes, and has the characteristics of high precision, high reliability, easy installation and maintenance, etc.

[0039] According to a tower for washing tetrabromobisphenol A provided by the present invention, Figure 1 As shown, the packing area 2 further includes a packing pressure plate 25 and a packing receiving plate 26 . The packing pressure plate 25 is arranged at the top of the packing area 2 , and the packing receiving plate 26 is arranged at the bottom of the packing area 2 .

[0040] According to a tower for washing tetrabromobisphenol A provided by the present invention, Figure 1As shown, the first component sedimentation area 1 , the filler area 2 and the second component sedimentation area 3 are all provided with manholes 6 .

[0041] In this embodiment, by providing the manhole 6, people can repair the equipment through the manhole 6, thereby extending the service life of the equipment.

[0042] According to some embodiments of the present invention, the working process of the tower for washing tetrabromobisphenol A is as follows: a first metering pump delivers deionized water through a water inlet from the lower end of the packing area into a first disperser, the first disperser disperses the deionized water at the lower end of the packing area, the material enters the second disperser from the upper end of the packing area through a feed inlet, the second disperser disperses the material at the upper end of the packing area, the deionized water moves upward, the material moves downward to achieve countercurrent mixing, and after sufficient mixing, the deionized water washes the material, the deionized water drives the impurities to continue to move upward until the light component settles, the diameter of the first component settling area becomes larger and the rising speed decreases, the deionized water rises to the first discharge port, the first extraction pump works to discharge the deionized water from the equipment for collection, tetrabromobisphenol A continues to precipitate downward to the second component settling area, the diameter of the second component settling area becomes larger and the precipitation speed decreases, thereby increasing the washing time of the material, facilitating the separation and stratification of tetrabromobisphenol A and deionized water, and after stratification is completed, the second extraction pump works to collect tetrabromobisphenol A from the second discharge port.

[0043] Compared with the prior art, the tower for washing tetrabromobisphenol A in the embodiment of the present invention has the following technical effects: (1) The water washing of tetrabromobisphenol A was changed from multiple intermittent stirring tanks to a water washing tower with continuous feeding and discharging, which reduced the equipment footprint.

[0044] (2) The washing process is automated. The feed and water inlet are controlled by the second metering pump and the first metering pump respectively. The feed and water inlet ratios are precise, which simplifies the operation steps.

[0045] (3) Reduction of consumption indicators: Water consumption per ton of product decreased from about 1.2 tons to about 0.8 tons.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tower for washing tetrabromobisphenol A, characterized in that: include: The first component sedimentation zone, the filling zone and the second component sedimentation zone are arranged from top to bottom, the lower end of the filling zone is provided with a water inlet and a first disperser, the first disperser is fixedly connected to the inner side wall of the filling zone, the first end of the water inlet is communicated with the first disperser, the upper end of the filling zone is provided with a feed inlet and a second disperser, the second disperser is fixedly connected to the inner side wall of the filling zone, the first end of the feed inlet is communicated with the second disperser, the top of the first component sedimentation zone is provided with a first discharge port, the bottom of the second component sedimentation zone is provided with a second discharge port, the diameter of the first component sedimentation zone is larger than the diameter of the filling zone, and the diameter of the second component sedimentation zone is larger than the diameter of the filling zone.

2. The tower for washing tetrabromobisphenol A according to claim 1, characterized in that: It also includes a first metering pump and a second metering pump. The first metering pump is disposed at the second end of the water inlet, and the second metering pump is disposed at the second end of the feed inlet.

3. The tower for washing tetrabromobisphenol A according to claim 1, characterized in that: It also includes a first production pump and a second production pump. The first end of the first discharge port is provided with the first production pump, and the first end of the second discharge port is provided with the second production pump.

4. The tower for washing tetrabromobisphenol A according to claim 1, characterized in that: It also includes a thermometer, which is fixedly arranged on the outer side wall of the second component sedimentation zone.

5. The tower for washing tetrabromobisphenol A according to claim 1, characterized in that: It also includes two interface meters, which are arranged on the outer side wall of the second component sedimentation zone at intervals in the vertical direction.

6. The tower for washing tetrabromobisphenol A according to claim 1, characterized in that: The packing area further comprises a packing pressure plate and a packing receiving plate. The packing pressure plate is arranged at the top of the packing area, and the packing receiving plate is arranged at the bottom of the packing area.

7. The tower for washing tetrabromobisphenol A according to claim 1, characterized in that: The first component settling area, the filler area and the second component settling area are all provided with manholes.

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