Ammonium sulfate crystallization reactor

Abstract

The utility model discloses an ammonium sulfate crystallization reactor which comprises a main reaction tank and a reflux reaction tank, a first bubble breaker is arranged in the main reaction tank, and reactant ammonia gas enters the first bubble breaker through a gas inlet pipe; the first bubble breaker is used for breaking ammonia gas into micron-scale micron-scale bubbles and outputting the micron-scale bubbles into the main reaction tank to be mixed and reacted with liquid acid liquor to generate ammonium sulfate, so that the crystallization reaction efficiency is higher; the air pump works, so that the adsorption cover has negative pressure inside, and redundant unreacted ammonia gas is adsorbed by the adsorption cover and enters the second bubble breaker along the connecting pipe; the second bubble crusher crushes the ammonia gas to form micron-sized bubbles and outputs the micron-sized bubbles into the reflux reaction tank after crushing is completed to be mixed with liquid acid liquor to react to generate ammonium sulfate, the arrangement of the two tanks ensures that the ammonia gas reacts relatively completely, raw material waste is avoided, the generated waste gas is less, and the production cost is reduced. The subsequent tail gas treatment pressure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonium sulfate preparation, and specifically relates to an ammonium sulfate crystallization reactor. Background Art

[0002] Ammonium sulfate is an inorganic substance with the chemical formula (NH4)2SO4, colorless crystals or white particles. Ammonium sulfate is mainly used as a fertilizer and is suitable for various soils and crops. It can also be used in textiles, leather, medicine and other fields. Crystallization is an important unit operation in the chemical process and is widely used in industrial production. The common crystallization process is the crystallization of solid substances from solution. The process of ammonium sulfate generation in an ammonium sulfate device is a common crystallization process. Ammonium sulfate is generated by the reaction of reactants sulfuric acid and ammonia. In the crystallization process, the source of sulfuric acid is generally taken from waste acid liquid, and ammonia often cannot completely react with waste acid liquid, resulting in waste of raw materials and generation of waste gas, which increases the pressure on subsequent waste gas treatment. For this reason, an ammonium sulfate crystallization reactor is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide an ammonium sulfate crystallization reactor to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ammonium sulfate crystallization reactor, comprising a main reaction tank and a reflux reaction tank, the reflux reaction tank is connected to the upper side of the main reaction tank, a first bubble breaker is arranged in the main reaction tank, a gas inlet pipe of the main reaction tank is connected to the first bubble breaker, a reactant ammonia enters the first bubble breaker through the air inlet pipe, the first bubble breaker breaks the ammonia into micron-sized micron-level bubbles and outputs the micron-level bubbles to the main reaction tank after the breaking to mix with the liquid acid to generate ammonium sulfate, a second bubble breaker is arranged in the reflux reaction tank, the second bubble breaker is connected to one end of the connecting pipe, and the connecting pipe The other end is located at the upper part of the main reaction tank and is connected to the adsorption hood. An air pump is arranged on the connecting pipe. The main reaction tank and the reflux reaction tank are both connected to a liquid inlet pipe. The upper end of the reflux reaction tank is connected to an air outlet pipe. The air pump works so that the adsorption hood has a negative pressure inside. The excess unreacted ammonia is adsorbed by the adsorption hood and enters the second bubble breaker along the connecting pipe. The second bubble breaker breaks the ammonia into micron-sized micron-sized bubbles and outputs the micron-sized bubbles to the reflux reaction tank after the breaking to mix with the liquid acid to react and generate ammonium sulfate. The setting of the two tanks ensures that the ammonia reaction is relatively complete, avoids the waste of raw materials, and generates less waste gas, thereby reducing the pressure of subsequent tail gas treatment.

[0005] Preferably, the upper end of the main reaction tank is an open structure, and the lower end of the reflux reaction tank is integrally formed with a connecting ring. A thread is provided on the outer side wall of the upper end opening of the main reaction tank, and the connecting ring is threadedly connected to the upper end opening of the main reaction tank. The setting of the connecting ring facilitates the sealing connection of the reflux reaction tank to the upper side of the main reaction tank. The two tanks are arranged in a vertical direction to save floor space.

[0006] Preferably, a connecting plate is fixedly connected to the peripheral side wall of the adsorption hood, and a carrying ring is fixedly connected to the inner side wall of the main reaction tank, and the connecting plate is located on the carrying ring. The carrying ring firmly fixes the adsorption hood at the upper position of the main reaction tank without contacting the liquid phase. It can be understood by those skilled in the art that liquid level visual windows are provided on the side walls of the main reaction tank and the reflux reaction tank to facilitate the control of the liquid level height in the tank.

[0007] Preferably, a partial pipe section of the connecting pipe is located outside the reflux reaction tank, and the air pump 7 is installed on the pipe section of the connecting pipe located outside the reflux reaction tank.

[0008] Preferably, a closing plate is fixedly connected to the bottom of the reflux reaction tank, and the second bubble breaker is installed on the closing plate.

[0009] Preferably, a pressure limiting valve is provided on the outlet pipe, and when a certain pressure is reached, the exhaust gas is discharged from the outlet pipe.

[0010] Preferably, the bearing ring is a corrosion-resistant rubber ring.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) a main reaction tank and a reflux reaction tank are provided, the reflux reaction tank is connected to the upper side of the main reaction tank, a first bubble breaker is provided in the main reaction tank, a gas inlet pipe of the main reaction tank is connected to the first bubble breaker, a reactant ammonia enters the first bubble breaker through the air inlet pipe, the first bubble breaker breaks the ammonia into micron-sized micron-sized bubbles and outputs the micron-sized bubbles to the main reaction tank after breaking to mix with liquid acid to generate ammonium sulfate, so that the crystallization reaction efficiency is higher;

[0013] (2) A second bubble breaker is provided in the reflux reaction tank, the second bubble breaker is connected to one end of a connecting pipe, the other end of the connecting pipe is located at the upper part of the main reaction tank and is connected to the adsorption hood, an air pump is provided on the connecting pipe, the main reaction tank and the reflux reaction tank are both connected to a liquid inlet pipe, the upper end of the reflux reaction tank is connected to an air outlet pipe, the air pump works so that the adsorption hood has a negative pressure inside, the excess unreacted ammonia is adsorbed by the adsorption hood, and enters the second bubble breaker along the connecting pipe, the second bubble breaker breaks the ammonia into micron-sized micron-sized bubbles, and after the breaking is completed, the micron-sized bubbles are output to the reflux reaction tank to mix with the liquid acid to react and generate ammonium sulfate. The setting of the two tanks ensures that the ammonia reaction is relatively complete, avoids the waste of raw materials, and generates less waste gas, thereby reducing the pressure of subsequent tail gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of the main structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0016] Figure 3 It is a schematic diagram of the main structure of the utility model.

[0017] In the figure: 1-main reaction tank, 2-reflux reaction tank, 3-first bubble breaker, 4-second bubble breaker, 5-connecting pipe, 6-adsorption cover, 7-air pump, 8-liquid inlet pipe, 9-air outlet pipe, 10-connecting ring, 11-connecting plate, 12-bearing ring, 13-closing plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example:

[0020] See also Figure 1-3The utility model provides the following technical scheme: an ammonium sulfate crystallization reactor, comprising a main reaction tank 1 and a reflux reaction tank 2, wherein the reflux reaction tank 2 is connected to the upper side of the main reaction tank 1, a first bubble breaker 3 is arranged in the main reaction tank 1, a gas inlet pipe of the main reaction tank 1 is connected to the first bubble breaker 3, a reactant ammonia enters the first bubble breaker 3 through the air inlet pipe, the first bubble breaker 3 breaks the ammonia into micron-sized micron-sized bubbles and outputs the micron-sized bubbles to the main reaction tank 1 after breaking to mix with liquid acid to generate ammonium sulfate, a second bubble breaker 4 is arranged in the reflux reaction tank 2, the second bubble breaker 4 is connected to one end of a connecting pipe 5, and the other end of the connecting pipe 5 is located at At the upper part of the main reaction tank 1 and connected with the adsorption hood 6, an air pump 7 is arranged on the connecting pipe 5, the main reaction tank 1 and the reflux reaction tank 2 are both connected with a liquid inlet pipe 8, and the upper end of the reflux reaction tank 2 is connected with an air outlet pipe 9. The air pump 7 works so that the adsorption hood 6 has a negative pressure inside, and the excess unreacted ammonia is adsorbed by the adsorption hood 6 and enters the second bubble breaker 4 along the connecting pipe 5. The second bubble breaker 4 breaks the ammonia into micron-sized micron-level bubbles and outputs the micron-level bubbles to the reflux reaction tank 2 after the breaking to mix with the liquid acid to generate ammonium sulfate. The setting of the two tanks ensures that the ammonia reaction is relatively complete, avoids the waste of raw materials, and generates less waste gas, thereby reducing the pressure of subsequent tail gas treatment.

[0021] Specifically, the upper end of the main reaction tank 1 is an open structure, and the lower end of the reflux reaction tank 2 is integrally formed with a connecting ring 10. A thread is provided on the outer side wall of the upper end opening of the main reaction tank 1. The connecting ring 10 is threadedly connected to the upper end opening of the main reaction tank 1. The setting of the connecting ring 10 facilitates the sealing connection of the reflux reaction tank 2 to the upper side of the main reaction tank 1. The two tanks are arranged in a vertical direction to save floor space.

[0022] Specifically, a connecting plate 11 is fixedly connected to the peripheral side wall of the adsorption hood 6, and a carrying ring 12 is fixedly connected to the inner side wall of the main reaction tank 1. The connecting plate 11 is located on the carrying ring 12. The carrying ring 12 firmly fixes the adsorption hood 6 at the upper position of the main reaction tank 1 without contacting the liquid phase. It can be understood by those skilled in the art that liquid level visual windows are provided on the side walls of the main reaction tank 1 and the reflux reaction tank 2 to facilitate the control of the liquid level height in the tank.

[0023] Specifically, a portion of the connecting pipe 5 is located outside the reflux reaction tank 2 , and the air pump 7 is installed on the connecting pipe 5 and on the portion of the connecting pipe 5 that is located outside the reflux reaction tank 2 .

[0024] Specifically, a closing plate 13 is fixedly connected to the bottom of the reflux reaction tank 2 , and the second bubble breaker 4 is installed on the closing plate 13 .

[0025] Specifically, a pressure limiting valve is provided on the outlet pipe 9 , and the exhaust gas is discharged from the outlet pipe 9 when a certain pressure is reached.

[0026] Specifically, the carrying ring 12 is a corrosion-resistant rubber ring.

[0027] Working principle: a main reaction tank 1 and a reflux reaction tank 2 are provided, the reflux reaction tank 2 is connected to the upper side of the main reaction tank 1, a first bubble breaker 3 is provided in the main reaction tank 1, a gas inlet pipe of the main reaction tank 1 is connected to the first bubble breaker 3, a reactant ammonia enters the first bubble breaker 3 through the air inlet pipe, the first bubble breaker 3 breaks the ammonia into micron-scale micron-level bubbles and outputs the micron-level bubbles to the main reaction tank 1 after breaking to mix with liquid acid to generate ammonium sulfate, a second bubble breaker 4 is provided in the reflux reaction tank 2, the second bubble breaker 4 is connected to one end of a connecting pipe 5, the other end of the connecting pipe 5 is located at the upper part of the main reaction tank 1 and It is connected to the adsorption hood 6, and an air pump 7 is arranged on the connecting pipe 5. The main reaction tank 1 and the reflux reaction tank 2 are both connected to a liquid inlet pipe 8. The upper end of the reflux reaction tank 2 is connected to an air outlet pipe 9. The air pump 7 works so that the adsorption hood 6 has a negative pressure inside. The excess unreacted ammonia is adsorbed by the adsorption hood 6 and enters the second bubble breaker 4 along the connecting pipe 5. The second bubble breaker 4 breaks the ammonia into micron-sized micron-level bubbles and outputs the micron-level bubbles to the reflux reaction tank 2 after the breaking to mix with the liquid acid to generate ammonium sulfate. The setting of the two tanks ensures that the ammonia reaction is relatively complete, avoids the waste of raw materials, and generates less waste gas, thereby reducing the pressure of subsequent tail gas treatment.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An ammonium sulfate crystallization reactor, characterized in that: The invention comprises a main reaction tank (1) and a reflux reaction tank (2), wherein the reflux reaction tank (2) is connected to the upper side of the main reaction tank (1), a first bubble breaker (3) is arranged in the main reaction tank (1), a gas inlet pipe of the main reaction tank (1) is connected to the first bubble breaker (3), a second bubble breaker (4) is arranged in the reflux reaction tank (2), the second bubble breaker (4) is connected to one end of a connecting pipe (5), the other end of the connecting pipe (5) is located at the upper part of the main reaction tank (1) and is connected to an adsorption cover (6), an air pump (7) is arranged on the connecting pipe (5), the main reaction tank (1) and the reflux reaction tank (2) are both connected to a liquid inlet pipe (8), and the upper end of the reflux reaction tank (2) is connected to an air outlet pipe (9).

2. An ammonium sulfate crystallization reactor according to claim 1, characterized in that: The upper end of the main reaction tank (1) is an open structure, and the lower end of the reflux reaction tank (2) is integrally formed with a connecting ring (10). The outer wall of the upper opening of the main reaction tank (1) is provided with a thread, and the connecting ring (10) is threadedly connected to the upper opening of the main reaction tank (1).

3. A kind of ammonium sulfate crystallization reactor according to claim 2, characterized in that: A connecting plate (11) is fixedly connected to the peripheral side wall of the adsorption cover (6), a carrying ring (12) is fixedly connected to the inner side wall of the main reaction tank (1), and the connecting plate (11) is located on the carrying ring (12).

4. An ammonium sulfate crystallization reactor according to claim 3, characterized in that: A portion of the connecting pipe (5) is located outside the reflux reaction tank (2), and the air pump (7) is installed on the connecting pipe (5) and on the portion of the connecting pipe (5) located outside the reflux reaction tank (2).

5. An ammonium sulfate crystallization reactor according to any one of claims 1 to 4, characterized in that: A closing plate (13) is fixedly connected to the bottom of the reflux reaction tank (2), and the second bubble breaker (4) is mounted on the closing plate (13).

6. An ammonium sulfate crystallization reactor according to any one of claims 1 to 4, characterized in that: The air outlet pipe (9) is provided with a pressure limiting valve.

7. An ammonium sulfate crystallization reactor according to claim 3, characterized in that: The bearing ring (12) is a corrosion-resistant rubber ring.

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