Brominated alkane drying apparatus

Abstract

The utility model relates to a kind of bromoalkane drying devices, it is related to the technical field of chemical equipment, it includes two groups of adsorption tanks of parallelly arranged, two groups of adsorption tanks are connected material tank by conveying pipeline and switching valve installed on conveying pipeline, material selection input one group of adsorption tank dehydration, realize continuous uninterrupted production by switching two groups of adsorption tanks to realize dehydration and regeneration process alternately, two groups of adsorption tanks are connected to realize the regeneration of composite adsorption layer again;Adsorption tank side is provided with observation window, composite adsorption layer is provided in adsorption tank, composite adsorption layer uses molecular sieve adsorption material and anhydrous copper sulfate adsorption material layering or mixed filling, anhydrous copper sulfate adsorption material water absorption discoloration, and saturation state is monitored by color change adsorption material.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical equipment, and in particular to a brominated alkane drying device. Background Technology

[0002] Bromoalkanes are a class of organic compounds, also known as haloalkanes. Bromoalkanes are important raw materials for the synthesis of many other organic compounds, and different functional groups can be introduced to prepare a variety of organic compounds.

[0003] In the production of brominated alkane, water washing removes impurities from the brominated alkane and dries it. Existing technology uses molecular sieve drying towers to absorb water. However, once a single molecular sieve drying tower is saturated with water, the molecular sieve regeneration requires shutdown, which reduces production efficiency. Furthermore, it is impossible to determine whether the adsorbent is saturated or when to regenerate, resulting in incomplete drying of the brominated alkane and affecting subsequent production processes. Utility Model Content

[0004] In order to improve the problems caused by the production of brominated alkanes in the above-mentioned background art, this utility model provides a brominated alkanes drying device.

[0005] The brominated alkane drying device provided by this utility model adopts the following technical solution:

[0006] A brominated alkane drying device includes two sets of adsorption tanks arranged in parallel. The two sets of adsorption tanks are connected to a material tank through a conveying pipeline and a switching valve installed on the conveying pipeline. The two sets of adsorption tanks are respectively connected to a regeneration system. A composite adsorption layer is provided inside the adsorption tank.

[0007] Preferably, the composite adsorption layer is filled with molecular sieve adsorbent and anhydrous copper sulfate adsorbent in layers or mixed.

[0008] Preferably, the regeneration system includes electric heating tubes spaced apart within the composite adsorption layer, the electric heating tubes being connected to an external power source; the regeneration system also includes a booster pump, the booster pump being connected to the air inlet at the bottom of the adsorption tank via an air duct, and the air outlet at the top of the adsorption tank being connected to a recovery tower for recovering waste gas via an air duct.

[0009] Preferably, the adsorption tank has an observation window on its side.

[0010] Preferably, the two sets of adsorption tanks have the same structure, and the two sets of adsorption tanks are installed and fixed on the support frame.

[0011] Preferably, a controller is provided on the outside of the support frame, and the controller is communicatively connected to the switching valve.

[0012] Preferably, a moisture sensor is installed at the outlet of the adsorption tank.

[0013] In summary, this utility model has the following beneficial technical effects:

[0014] 1. This utility model discloses a brominated alkane drying device, which sets up two sets of adsorption tanks in parallel. The material is selected and input into one set of adsorption tanks for dehydration, while the other set of adsorption tanks regenerates the composite adsorption layer through a regeneration system. By switching the two sets of adsorption tanks through valves, the dehydration and regeneration processes are alternately carried out, realizing continuous and uninterrupted production, avoiding the need for a single adsorption tank to interrupt production to complete regeneration, and improving production efficiency.

[0015] 2. The adsorbent material for adsorbing moisture in the adsorption tank is optimized. The composite adsorption layer uses molecular sieve adsorbent and anhydrous copper sulfate adsorbent in layers or mixed filling. The molecular sieve adsorbent works with the anhydrous copper sulfate adsorbent to absorb moisture. At the same time, the anhydrous copper sulfate adsorbent absorbs water and changes color. The saturation state of the adsorbent is monitored by the color change. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a brominated alkane drying device according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the adsorption tank according to an embodiment of the present invention;

[0018] Figure 3 This is a structural schematic diagram of an embodiment of the present utility model;

[0019] Figure 4 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached diagram: 1. Adsorption tank; 2. Conveying pipeline; 3. Switching valve; 4. Material tank; 5. Regeneration system; 6. Composite adsorption layer; 7. Molecular sieve adsorbent; 8. Anhydrous copper sulfate adsorbent; 9. Electric heating tube; 10. Booster pump; 11. Air inlet; 12. Air outlet; 13. Controller; 14. Observation window; 15. Support frame; 16. Moisture sensor. Detailed Implementation

[0021] The following combination Figures 1-4 The present invention will be described in further detail below.

[0022] This utility model discloses a brominated alkane drying apparatus.

[0023] Reference Figure 1 , Figure 2 , Figure 4 A brominated alkane drying device includes two sets of adsorption tanks 1 arranged in parallel. The two sets of adsorption tanks 1 are connected to a material tank 4 through a conveying pipe 2 and a switching valve 3 installed on the conveying pipe 2. The two sets of adsorption tanks 1 are respectively connected to a regeneration system 5. A composite adsorption layer 6 is provided inside the adsorption tank 1.

[0024] Reference Figure 2 The composite adsorption layer 6 is filled with molecular sieve adsorbent 7 and anhydrous copper sulfate adsorbent 8 in layers. Both molecular sieve adsorbent 7 and anhydrous copper sulfate adsorbent 8 are regenerable: Anhydrous copper sulfate adsorbent 8 chemically adsorbs water, and after absorbing water, it generates copper sulfate pentahydrate, changing its color from white to blue. The color change of anhydrous copper sulfate adsorbent 8 can be used to monitor the saturation state of the adsorbent. The essence of the regeneration of anhydrous copper sulfate adsorbent 8 is the thermal decomposition reaction of the crystalline hydrate formed after water absorption. Heating destroys the crystalline hydrate structure and releases water. Its complete dehydration requires 258℃. Molecular sieve adsorbent 7 physically adsorbs water. Heating increases the temperature of the molecular sieve, allowing the water and impurities adsorbed on the molecular sieve to obtain sufficient energy, thereby overcoming the adsorption force and desorbing. Its optimal regeneration temperature is 200-300℃.

[0025] Reference Figure 3 The composite adsorption layer 6 can also be filled with a mixture of molecular sieve adsorbent 7 and anhydrous copper sulfate adsorbent 8.

[0026] Reference Figure 1 , Figure 2 , Figure 4 The regeneration system 5 includes electric heating tubes 9 spaced apart within the composite adsorption layer 6, which are externally powered for heating. The regeneration system 5 also includes a booster pump 10, which is connected to the air inlet 11 at the bottom of the adsorption tank 1 via an air duct. The air outlet 12 at the top of the adsorption tank 1 is connected to a recovery tower for recovering waste gas via an air duct. The recovery tower is equipped with a tail gas treatment system, which condenses and recovers moisture and heat through a heat exchanger, and heats the gas and supplies it back to the booster pump 10. The booster pump 10 fills the adsorption tank 1 with flowing gas, carrying away the moisture desorbed from the molecular sieve adsorbent 7, accelerating the dehydration of the anhydrous copper sulfate adsorbent 8, and preventing water vapor from remaining in the adsorption tank 1 and being re-adsorbed. The booster pump 10 and the recovery tower can be set up as one unit, connected to two sets of adsorption tanks 1 via parallel pipelines, or two sets can be set up, each connected to two sets of adsorption tanks 1.

[0027] Reference Figure 2 An observation window 14 is provided on the side of the adsorption tank 1. The operator observes the color change of the anhydrous copper sulfate adsorbent 8 through the observation window 14, and then judges the water saturation and regeneration status of the adsorbent.

[0028] Reference Figure 1 The two sets of adsorption tanks 1 have the same structure, and the two sets of adsorption tanks 1 are installed and fixed on the support frame 15.

[0029] Reference Figure 1 , Figure 4A controller 13 is installed on the outside of the support frame 15, and the controller 13 is communicatively connected to the switching valve 3. The PLC control system installed inside the controller 13 has preset switching logic, which can drive the switching valve 3 to act according to manual operation, time cycle or real-time monitoring signal, thereby switching the adsorption and regeneration state of the adsorption tank 1.

[0030] Reference Figure 1 , Figure 4 A moisture sensor 16 is installed at the discharge position of the adsorption tank 1. The moisture sensor 16 is connected to the controller 13 to detect the moisture content of the dried bromoalkane and display the result on the controller 13.

[0031] The implementation principle of the brominated alkane drying device in this embodiment is as follows: the brominated alkane to be dried is input into the adsorption tank 1 at the raw material input end. The composite adsorption layer 6 in the adsorption tank 1 absorbs moisture, and the dried brominated alkane is discharged from the raw material output end of the adsorption tank 1. When the adsorbent in the adsorption tank 1 changes color and approaches saturation, the switching valve 3 is adjusted, and the material is transferred to another adsorption tank 1 for dehydration. The saturated adsorption tank 1 is regenerated through the regeneration system 5. The dehydration and regeneration processes of the two sets of adsorption tanks 1 are carried out alternately to achieve continuous drying.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A brominated alkane drying apparatus, characterized in that: It includes two sets of adsorption tanks (1) arranged in parallel. The two sets of adsorption tanks (1) are connected to the material tank (4) through the conveying pipe (2) and the switching valve (3) installed on the conveying pipe (2). The two sets of adsorption tanks (1) are respectively connected to the regeneration system (5); a composite adsorption layer (6) is provided inside the adsorption tank (1).

2. The brominated alkane drying apparatus according to claim 1, characterized in that: The composite adsorption layer (6) is filled in layers using molecular sieve adsorbent (7) and anhydrous copper sulfate adsorbent (8).

3. The brominated alkane drying apparatus according to claim 1, characterized in that: The regeneration system (5) includes electric heating tubes (9) spaced apart within the composite adsorption layer (6), and the electric heating tubes (9) are connected to an external power source; The regeneration system also includes a booster pump (10), which is connected to the air inlet (11) at the bottom of the adsorption tank (1) via an air duct, and the air outlet (12) at the top of the adsorption tank (1) is connected to the recovery tower for recovering waste gas via an air duct.

4. The brominated alkane drying apparatus according to claim 1, characterized in that: An observation window (14) is provided on the side of the adsorption tank (1).

5. The brominated alkane drying apparatus according to claim 1, characterized in that: The two sets of adsorption tanks (1) have the same structure, and the two sets of adsorption tanks (1) are installed and fixed on the support frame (15).

6. The brominated alkane drying apparatus according to claim 5, characterized in that: A controller (13) is provided on the outside of the support frame (15), and the controller (13) is communicatively connected to the switching valve (3).

7. The brominated alkane drying apparatus according to claim 1, characterized in that: A moisture sensor (16) is installed at the discharge position of the adsorption tank (1).

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