Novel urea hydrolysis ammonia production reactor

Abstract

The utility model discloses a novel urea hydrolysis ammonia production reactor which comprises a reaction chamber, a heating chamber is arranged on the outer peripheral side of the reaction chamber, a denitration structure is arranged beside the heating chamber and comprises a horizontal flue and a vertical flue, a heat exchange chamber is arranged on the outer side of the horizontal flue, one end of the heat exchange chamber is connected to a water source, and the other end of the heat exchange chamber is connected to a steam generator. The steam generator is connected to the bottom end of the heating cavity, and an air outlet is further formed in the upper end of the heating cavity. According to the utility model, heat of flue gas needing denitration treatment is recycled and used for forming heating steam to heat and hydrolyze a urea solution in the reaction chamber, so that the energy conservation and resource utilization are improved; meanwhile, steam can also be used for preheating a urea solution, so that the hydrolysis ammonia preparation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of ammonia production equipment technology, specifically to a novel urea hydrolysis ammonia production reactor. Background Technology

[0002] A Chinese utility model patent with application number 202122494981.8 discloses a novel urea hydrolysis ammonia production reactor. It solves the problem of easy corrosion and scaling of the heat exchange coil of the electric heater in the reactor by setting a heating container to heat the reaction liquid in the reaction container. However, the heating of the medium in the heating container is still achieved by the heater, which has the problem of low energy efficiency when applied to flue gas denitrification treatment. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a novel energy-saving and efficiency-enhancing urea hydrolysis ammonia production reactor.

[0004] To achieve the above objectives, this utility model provides a novel urea hydrolysis ammonia production reactor, which adopts the following technical solution:

[0005] A novel urea hydrolysis ammonia production reactor includes a reaction chamber, a heating chamber located on the periphery of the reaction chamber, and a denitrification structure located beside the heating chamber. The denitrification structure includes a horizontal flue and a vertical flue. A heat exchange chamber is located outside the horizontal flue, with one end of the heat exchange chamber connected to a water source and the other end connected to a steam generator. The steam generator is connected to the bottom of the heating chamber, and an outlet is located at the top of the heating chamber.

[0006] A further improvement of this novel urea hydrolysis ammonia production reactor is that a feed pipe and an outlet pipe are provided on the reaction chamber, and the outlet pipe is connected to the ammonia injection structure in the vertical flue.

[0007] A further improvement of this novel urea hydrolysis ammonia production reactor is that the gas outlet is connected to a steam outlet pipe, a preheating chamber is provided on the outside of the feed pipe, the steam outlet pipe is connected to the preheating chamber, and the preheating chamber is also provided with a steam outlet.

[0008] A further improvement of this novel urea hydrolysis ammonia production reactor is that the steam outlet is connected to a water tank via a connecting pipe, and the water tank is connected to a heat exchange chamber.

[0009] A further improvement of this novel urea hydrolysis ammonia production reactor is that both the heating chamber and the preheating chamber are equipped with drain ports.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention improves energy conservation and resource utilization by recovering and utilizing the heat from the flue gas required for denitrification to generate heating steam for heating and hydrolyzing the urea solution in the reaction chamber; at the same time, the steam can also be used to preheat the urea solution, improving the efficiency of hydrolysis to produce ammonia. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] In the diagram: 1. Reaction chamber, 2. Heating chamber, 3. Vertical flue, 4. Horizontal flue, 5. Heat exchange chamber, 6. Steam generator, 7. Feed pipe, 8. Steam outlet pipe, 9. Water tank. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 As shown, a novel urea hydrolysis ammonia production reactor includes a reaction chamber 1, a heating chamber 2 located on the outer periphery of the reaction chamber, and a denitrification structure located beside the heating chamber. The denitrification structure includes a horizontal flue 4 and a vertical flue 3. A heat exchange chamber 5 is located outside the horizontal flue, with one end connected to a water source and the other end connected to a steam generator 6. The steam generator is connected to the bottom of the heating chamber, and an outlet is located at the top of the heating chamber. The horizontal flue material in the heat exchange chamber is a material with good thermal conductivity.

[0016] The reaction chamber is equipped with a feed pipe 7 and an exhaust pipe, and the exhaust pipe is connected to the ammonia injection structure in the vertical flue.

[0017] Furthermore, the steam outlet is connected to the steam outlet pipe 8, and a preheating chamber is provided on the outside of the feed pipe. The feed pipe portion in the preheating chamber is also made of a material with good thermal conductivity. The steam outlet pipe is connected to the preheating chamber, which also has a steam outlet. The steam outlet is connected to the water tank 9 via a connecting pipe, and the water tank is connected to the heat exchange chamber.

[0018] Both the heating chamber and the preheating chamber are equipped with drain ports.

[0019] Valves can be installed on each of the above pipelines as needed.

[0020] The working principle of this utility model is as follows: after water passes through the high-temperature flue gas for heat exchange, it enters the steam generator to form steam, which enters the heating chamber to heat the urea solution in the reaction chamber to produce ammonia. The steam exits the steam outlet and exchanges heat with the solution in the feed pipe to achieve preheating. After that, the steam enters the water tank for recycling.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel reactor for hydrolysis of urea to produce ammonia, characterized in that: The device includes a reaction chamber, a heating chamber located on the outer periphery of the reaction chamber, a denitrification structure located beside the heating chamber, the denitrification structure including a horizontal flue and a vertical flue, a heat exchange chamber located outside the horizontal flue, one end of the heat exchange chamber being connected to a water source and the other end being connected to a steam generator, the steam generator being connected to the bottom of the heating chamber, and an outlet located at the top of the heating chamber.

2. A novel reactor for hydrolysis of urea to produce ammonia as claimed in claim 1 wherein: The reaction chamber is equipped with a feed pipe and an exhaust pipe, and the exhaust pipe is connected to the ammonia injection structure in the vertical flue.

3. A novel reactor for urea hydrolysis to produce ammonia as claimed in claim 2, wherein: The air outlet is connected to the steam outlet pipe, and a preheating chamber is provided on the outside of the feed pipe. The steam outlet pipe is connected to the preheating chamber, and the preheating chamber is also provided with a steam outlet.

4. A novel reactor for hydrolysis of urea to produce ammonia as claimed in claim 3 wherein: The steam outlet is connected to the water tank via a connecting pipe, and the water tank is connected to the heat exchange chamber.

5. A novel reactor for hydrolysis of urea to produce ammonia as claimed in claim 4 wherein: Both the heating chamber and the preheating chamber are equipped with drain ports.

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