Waste hydrobromic acid recycling device

Abstract

The utility model relates to the field of waste hydrobromic acid recycling, in particular to a waste hydrobromic acid recycling device. The waste hydrobromic acid recycling device comprises an extraction device, the extraction device is provided with an extraction tank used for extraction treatment, waste hydrobromic acid is input from one end of the extraction tank, and after extraction reaction, waste hydrobromic acid is discharged from an output end arranged at the other end of the extraction tank; the neutralization device is communicated with the output end of the extraction tank, and the neutralization device is provided with a neutralization reaction kettle which can be used for carrying out neutralization reaction on the extracted waste hydrobromic acid; the concentration and crystallization device is arranged on one side, far away from the extraction device, of the neutralization device, and the concentration and crystallization device is provided with a concentration and crystallization kettle capable of performing concentration and crystallization treatment on the waste hydrobromic acid after the neutralization reaction. The extraction device, the neutralization device and the concentration and crystallization device are designed into a matched integrated device, sequential treatment and recycling are achieved, waste hydrobromic acid can be effectively treated, and the recycling efficiency of the hydrobromic acid can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of waste hydrobromic acid recovery, in particular to a waste hydrobromic acid recovery and utilization device. Background Art

[0002] Hydrobromic acid is an important organic compound, mainly used to produce inorganic bromides such as sodium bromide, potassium bromide, lithium bromide, calcium bromide and some alkyl bromides. In the pharmaceutical industry, it is mainly used to synthesize penicillin, chloramphenicol, sedatives, anesthetics and anti-inflammatory drugs; in the petroleum industry, it is used as an alkylation catalyst; as an analytical reagent, it is also used to determine sulfur, selenium, arsenic, zinc and iron, and to separate tin from arsenic and antimony; it can also be used to synthesize dyes or spices.

[0003] In the actual production process, some reactions will produce waste hydrobromic acid, which often contains not only a large amount of organic matter, but also a large amount of free bromine and other impurity ions. The waste hydrobromic acid has a high concentration, and its refining treatment can reduce the cost of raw material procurement and realize the reuse of waste.

[0004] With respect to the above-mentioned prior art, the inventors found that the existing schemes for recycling waste hydrobromic acid are relatively complicated and the related supporting facilities are not perfect, resulting in poor effect and quality of recycling waste hydrobromic acid. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a waste hydrobromic acid recovery and utilization device.

[0006] The waste hydrobromic acid recovery and utilization device provided in this application adopts the following technical solution:

[0007] A waste hydrobromic acid recovery and utilization device, comprising:

[0008] An extraction device, wherein the extraction device is provided with an extraction tank for extraction treatment, waste hydrobromic acid is input from one end of the extraction tank, and after extraction reaction, is discharged from an output end provided at the other end of the extraction tank;

[0009] A neutralization device, the neutralization device is connected to the output end of the extraction tank, and the neutralization device is provided with a neutralization reaction kettle for neutralizing the waste hydrobromic acid after the extraction;

[0010] A concentration and crystallization device is arranged on a side of the neutralization device away from the extraction device, and the concentration and crystallization device is provided with a concentration and crystallization kettle for concentrated crystallization of waste hydrobromic acid after the neutralization reaction.

[0011] Preferably, the extraction device further comprises:

[0012] Two centrifugal devices are respectively arranged at the input end and the output end of the extraction device to centrifuge and separate the waste hydrobromic acid material before and after the extraction treatment.

[0013] Preferably, a decolorization device is further provided between the neutralization device and the extraction device, and the decolorization device is provided at one end of the centrifugal device close to the output end to collect the waste hydrobromic acid material after the centrifugal separation.

[0014] Preferably, a filter press device is further provided between the decolorizing device and the centrifugal device near the output end, one end of the filter press device is connected to the centrifugal device, and the other end is connected to the decolorizing device, and a plate and frame filter press is provided in the filter press device to separate waste residues in the waste hydrobromic acid material after centrifugal separation.

[0015] Preferably, a centrifugal device is provided between the filter press device and the decolorization device, and between the decolorization device and the concentration and crystallization device.

[0016] Preferably, the concentration and crystallization device further comprises:

[0017] A steam-water separation device, one end of which is connected to the interior of the concentration and crystallization kettle, and a reflux pipe is provided at the lower end of the steam-water separation device and is connected to the interior of the concentration and crystallization kettle;

[0018] A condensing device, which is arranged at the other end of the steam-water separator to condense the gas in the steam-water separator, and the condensing device is provided with a water storage tank to store the liquid after the condensation treatment;

[0019] A centrifuge is connected to the bottom of the concentration and crystallization kettle to perform centrifugal separation on the concentrated and crystallized product in the concentration and crystallization kettle.

[0020] Preferably, the material used for decolorization in the decolorization device is activated carbon.

[0021] Preferably, the decolorizing device, the neutralizing device and the concentrating and crystallizing device are all provided with a thermometer and a pressure gauge.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The present application designs an extraction device, a neutralization device and a concentration and crystallization device into an integrated device, and treats and recycles waste hydrobromic acid through a sequential treatment scheme. The overall scheme is well designed and has a high treatment efficiency. It can not only effectively treat the waste hydrobromic acid, but also effectively improve the efficiency of hydrobromic acid recovery and utilization.

[0024] 2. This application optimizes the structure of the concentration and crystallization device, and meets the needs of the actual processing process by collecting the steam and water in batches after separation.

[0025] 3. The present application performs composite treatment by setting up multiple centrifugal devices and filter press devices to effectively filter and remove impurities in waste hydrobromic acid. At the same time, the organic matter, colored impurities, and sodium bromide produced in the neutralization reaction in the waste hydrobromic acid are effectively removed by sequentially cooperating with the extraction device, neutralization device, decolorization device, and concentration and crystallization device, and finally the waste hydrobromic acid is recovered and utilized through concentration and crystallization. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the waste hydrobromic acid recovery and utilization device of the embodiment of the present application.

[0027] Explanation of the accompanying drawings: 1. Extraction device; 2. Decolorization device; 3. Filter press device; 4. Neutralization device; 5. Concentration and crystallization device; 51. Steam-water separation device; 52. Condensation device; 53. Centrifuge; 6. Centrifugal device. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 This application is described in further detail.

[0029] like Figure 1 A waste hydrobromic acid recovery and utilization device comprises an extraction device 1. A centrifugal device 6 is provided at the input end of the extraction device 1. The waste hydrobromic acid to be treated is first subjected to preliminary centrifugal treatment by the centrifugal device 6. The waste hydrobromic acid after centrifugation enters an extraction tank in the extraction device 1. The extraction condition is observed through a sight glass provided on the extraction tank. The extracted organic matter is discharged through an output end provided below the extraction tank. The discharged organic matter is subjected to secondary centrifugal treatment by the centrifugal device 6 provided at the rear end of the output end. The organic matter after the secondary centrifugal treatment is then transported to a decolorization device 2 connected to the centrifugal device 6. The decolorization device 2 is provided with a decolorization reactor. It is filled with activated carbon material, and the organic matter is decolorized by activated carbon adsorption. The organic matter decolorized by the decolorizer 2 is then centrifuged by the centrifugal device 6 to remove the large activated carbon particles carried in the decolorizer 2, and then is filtered by the filter press device 3 connected to the output end of the decolorizer 2. The input end of the filter press device 3 is provided with a centrifugal device 6 for three centrifugal treatments, and then the small activated carbon particles carried in the decolorizer 2 are fully treated by the plate and frame filter press provided in the filter press device 3. After the impurities and waste residues are discharged, the treated materials are collected and centrifuged four times by the centrifugal device 6 to collect the organic matter that has been centrifuged four times.

[0030] The organic matter treated by four centrifugations is transported to the neutralization device 4 . The liquid alkali and the acidity meter loaded in the neutralization device 4 are used to control the neutralization device 4 to fully neutralize the organic matter treated by four centrifugations. The neutralized product is then centrifuged for five times and then transported to the concentration and crystallization device 5 .

[0031] The periphery of the concentration and crystallization device 5 is provided with a steam pipe and a cooling water pipe. The upper end of the concentration and crystallization device 5 is connected to a steam-water separation device 51. The high-temperature gas is collected by the steam-water separation device 51, and the high-temperature water vapor is condensed by the condensation device 52 and then transported to a water storage tank for collection. The concentrated crystallization product in the concentration and crystallization device 5 is then centrifuged by a centrifuge 53 arranged at the bottom to remove the centrifugal waste liquid, thereby completing the recovery and utilization of hydrobromic acid.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waste hydrobromic acid recovery and utilization device, characterized in that: include: An extraction device (1), wherein the extraction device (1) is provided with an extraction tank for extraction treatment, waste hydrobromic acid is input from one end of the extraction tank, and after extraction reaction, is discharged from an output end provided at the other end of the extraction tank; A neutralization device (4), the neutralization device (4) is connected to the output end of the extraction tank, and the neutralization device (4) is provided with a neutralization reaction kettle for neutralizing the waste hydrobromic acid after extraction; A concentration and crystallization device (5), wherein the concentration and crystallization device (5) is arranged on a side of the neutralization device (4) away from the extraction device (1), and the concentration and crystallization device (5) is provided with a concentration and crystallization kettle for concentrating and crystallizing the waste hydrobromic acid after the neutralization reaction.

2. A waste hydrobromic acid recovery and utilization device according to claim 1, characterized in that: The extraction device (1) further comprises: Two centrifugal devices (6) are respectively arranged at the input end and the output end of the extraction device (1) to perform centrifugal separation treatment on the waste hydrobromic acid material before and after the extraction treatment.

3. A waste hydrobromic acid recovery and utilization device according to claim 2, characterized in that: A decolorizing device (2) is also provided between the neutralizing device (4) and the extracting device (1). The decolorizing device (2) is provided at one end of the centrifugal device (6) close to the output end to collect the waste hydrobromic acid material after centrifugal separation.

4. A waste hydrobromic acid recovery and utilization device according to claim 3, characterized in that: A filter press device (3) is further provided between the decolorizing device (2) and the centrifugal device (6) near the output end. One end of the filter press device (3) is connected to the centrifugal device (6), and the other end is connected to the decolorizing device (2). A plate and frame filter press is provided in the filter press device (3) to separate waste residue from the waste hydrobromic acid material after centrifugal separation.

5. A waste hydrobromic acid recovery and utilization device according to claim 4, characterized in that: A centrifugal device (6) is provided between the filter press device (3) and the decolorizing device (2), and between the decolorizing device (2) and the concentration and crystallization device (5).

6. A waste hydrobromic acid recovery and utilization device according to claim 1, characterized in that: The concentration and crystallization device (5) further comprises: A steam-water separation device (51), one end of which is connected to the interior of the concentration and crystallization kettle, and a reflux pipe is provided at the lower end of the steam-water separation device (51) and is connected to the interior of the concentration and crystallization kettle; A condensing device (52), the condensing device (52) being arranged at the other end of the steam-water separator (51) to condense the gas in the steam-water separator, and the condensing device (52) being provided with a water storage tank to store the liquid after the condensation treatment; A centrifuge (53) is connected to the bottom of the concentration and crystallization kettle to perform centrifugal separation on the concentrated and crystallized product in the concentration and crystallization kettle.

7. A waste hydrobromic acid recovery and utilization device according to claim 3, characterized in that: The material used for decolorization in the decolorization device (2) is activated carbon.

8. A waste hydrobromic acid recovery and utilization device according to claim 3, characterized in that: The decolorizing device (2), the neutralizing device (4) and the concentration and crystallization device (5) are all provided with a thermometer and a pressure gauge.

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