Tail gas circulating type electronic ammonia absorber

Abstract

The utility model relates to a tail gas circulation type electronic ammonia absorber, which comprises an ammonia absorber, compressors, coolers and a supercharging device, the ammonia absorber is provided with a double-layer ammonia absorbing chamber, the double-layer ammonia absorbing chamber is composed of an upper ammonia absorbing chamber and a lower ammonia absorbing chamber, the top of the ammonia absorber is provided with two compressors and two coolers, and the two compressors and the two coolers are connected with the supercharging device. The compressors comprise the first compressor and the second compressor, an inlet of the first compressor is connected with the lower ammonia absorption chamber, an outlet of the first compressor is connected with an inlet of the cooling machine, an outlet of the cooling machine is connected with an inlet of the second compressor, an outlet of the second compressor is connected with an inlet of the upper ammonia absorption chamber, and an outlet of the upper ammonia absorption chamber is connected with the supercharging device. Through special arrangement of the compressor, the cooling machine and the cooling device, an integrated structure is formed, the transportation and installation process is more convenient, the structure is simple, the number of parts is small, and therefore the cost for maintaining and replacing the parts is reduced.

Description

Technical Field

[0001] The utility model relates to an electronic ammonia absorber with tail gas circulation. Background Art

[0002] Electronic ammonia absorber is a device that uses electronic control technology to absorb and process ammonia (NH3). This device is usually used in industrial environments, especially in situations where it is necessary to process ammonia tail gas emitted from the exhaust port on the top of ammonia storage tanks, ammonia dosing boxes and ammonia metering boxes.

[0003] During the use of the ammonia absorber, its exhaust gas usually contains some valuable components, such as ammonia, hydrogen, methane and nitrogen. These components can reduce environmental pollution and improve resource utilization efficiency through further treatment and recovery. In the existing technology, the mixed gas is mostly discharged into the atmosphere as waste gas or burned, which can have adverse effects on the environment, have low thermal utilization rate and high cost of recovering ammonia.

[0004] In addition, most of the existing exhaust gas recycle devices are added by enterprises at a later stage, and most of the added equipment is reassembled from retired equipment. The equipment reliability is low, and the maintenance and installation of the device are troublesome.

[0005] Therefore, there is a need for an exhaust gas circulation type electronic ammonia absorber having an integrated compact structure so as to achieve an integrated installation effect. Utility Model Content

[0006] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art and to provide an electronic ammonia absorber with exhaust gas circulation, which achieves an integrated structure through special settings of the compressor, cooler and cooling device, making its transportation and installation process more convenient.

[0007] An electronic ammonia absorber with tail gas circulation comprises an ammonia absorber, a compressor, a cooler and a booster, wherein the ammonia absorber is provided with a double-layer ammonia absorption chamber, and the double-layer ammonia absorption chamber consists of an upper ammonia absorption chamber and a lower ammonia absorption chamber. Two compressors and coolers are provided on the top of the ammonia absorber, and the compressor comprises a first compressor and a second compressor, wherein the inlet of the first compressor is connected to the lower ammonia absorption chamber, the outlet of the first compressor is connected to the inlet of the cooler, the outlet of the cooler is connected to the inlet of the second compressor, the outlet of the second compressor is connected to the inlet of the upper ammonia absorption chamber, and the outlet of the upper ammonia absorption chamber is connected to the booster.

[0008] The vane compressor and the diaphragm compressor are used in sequence, which has a higher compression efficiency for the mixed combustible gas. The first compressor is a vane compressor, and the second compressor is a diaphragm compressor.

[0009] The exchange efficiency of the shell and tube heat exchanger is better. A plurality of heat exchangers are arranged inside the cooling machine, and the heat exchangers are of the shell and tube type.

[0010] In order to make the structure more compact, a bracket is provided on the shell of the ammonia absorber, and the boosting device is arranged on the bracket.

[0011] The maintenance of the reciprocating compressor is simpler and better compactness can be achieved in the present solution. The boosting device is a reciprocating gas booster.

[0012] The automation rate of the device is increased, the compressor power is changed in time according to the concentration of ammonia, and energy waste is reduced. A detection device is provided in the ammonia absorber, and the compressor power can be controlled and changed according to the value of the detection device.

[0013] Beneficial effects: The compact design means that the device occupies less space, making it more suitable for industrial environments with limited space; the simplified design makes operation and maintenance easier, reducing operator training requirements and maintenance costs; through the special setting of the compressor, cooler and cooling device, an integrated structure is achieved, making its transportation and installation process more convenient, and the structure is simple and has fewer parts, thereby reducing the cost of maintenance and replacement of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of an electronic ammonia absorber with tail gas circulation;

[0015] In the figure: 1. ammonia absorber, 2. first compressor, 3. second compressor, 4. cooler, 5. upper ammonia absorption chamber, 6. lower ammonia absorption chamber, 7. booster device, 8. bracket. DETAILED DESCRIPTION

[0016] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0017] In this embodiment:

[0018] See also Figure 1 An electronic ammonia absorber with tail gas circulation type includes an ammonia absorber 1, a compressor, a cooler 4 and a booster 7. The ammonia absorber 1 is provided with a double-layer ammonia absorption chamber, which consists of an upper ammonia absorption chamber 5 and a lower ammonia absorption chamber 6. Two compressors and a cooler 4 are provided on the top of the ammonia absorber 1. The compressor includes a first compressor 2 and a second compressor 3. The inlet of the first compressor 2 is connected to the lower ammonia absorption chamber 6, the outlet of the first compressor 2 is connected to the inlet of the cooler 4, the outlet of the cooler 4 is connected to the inlet of the second compressor 3, the outlet of the second compressor 3 is connected to the inlet of the upper ammonia absorption chamber 5, and the outlet of the upper ammonia absorption chamber 5 is connected to the booster 7.

[0019] The vane compressor and the diaphragm compressor are used in sequence, which has a higher compression efficiency for the mixed combustible gas. The first compressor 2 is a vane compressor, and the second compressor 3 is a diaphragm compressor. The exchange efficiency of the shell and tube heat exchanger is better. Several heat exchangers are arranged inside the cooler 4, and the heat exchanger is a shell and tube type. In order to make the structure more compact, a bracket 8 is arranged on the shell of the ammonia absorber 1, and the booster 7 is arranged on the bracket 8.

[0020] The maintenance of the reciprocating compressor is simpler, and in this solution, better compactness can be achieved. The boosting device 7 is a reciprocating gas booster, which increases the automation rate of the device, changes the compressor power in time according to the ammonia concentration, and reduces energy waste. A detection device is provided in the ammonia absorber 1, and the power of the compressor can be controlled and changed according to the value of the detection device.

[0021] Ammonia is introduced into the lower ammonia suction chamber 6 from the source and collected. The ammonia in the lower ammonia suction chamber 6 is compressed to a certain pressure through the first compressor 2. The ammonia compressed by the first compressor 2 enters the cooler 4, the purpose of which is to reduce the temperature of the ammonia, which helps to condense the moisture and possible oil vapor in the ammonia, and also helps to protect the second compressor 3, because low-temperature gas is easier to compress and causes less wear and tear on mechanical parts.

[0022] The cooled ammonia enters the second compressor 3 for secondary compression to further increase the pressure of the ammonia so that the ammonia can be effectively stored or reused. The high-pressure ammonia after secondary compression is sent to the upper ammonia suction chamber 5 for further compression. The outlet of the upper ammonia suction chamber 5 is connected to the boosting device 7, which increases the pressure of the ammonia to the transportation level, making it suitable for transportation and storage.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An electronic ammonia absorber with tail gas circulation, characterized in that: It includes an ammonia absorber, a compressor, a cooler and a booster. The ammonia absorber is provided with a double-layer ammonia absorption chamber, which consists of an upper ammonia absorption chamber and a lower ammonia absorption chamber. Two compressors and coolers are provided on the top of the ammonia absorber. The compressor includes a first compressor and a second compressor. The inlet of the first compressor is connected to the lower ammonia absorption chamber, the outlet of the first compressor is connected to the inlet of the cooler, the outlet of the cooler is connected to the inlet of the second compressor, the outlet of the second compressor is connected to the inlet of the upper ammonia absorption chamber, and the outlet of the upper ammonia absorption chamber is connected to the booster.

2. The tail gas circulation type electronic ammonia absorber according to claim 1, characterized in that: The first compressor is a vane compressor, and the second compressor is a diaphragm compressor.

3. The tail gas circulation type electronic ammonia absorber according to claim 1, characterized in that: A plurality of heat exchangers are arranged inside the cooling machine, and the heat exchangers are shell and tube type.

4. The tail gas circulation type electronic ammonia absorber according to claim 1, characterized in that: A bracket is provided on the shell of the ammonia absorber, and the boosting device is arranged on the bracket.

5. The tail gas circulation type electronic ammonia absorber according to claim 4, characterized in that: The boosting device is a reciprocating gas booster.

6. The tail gas circulation type electronic ammonia absorber according to claim 1, characterized in that: The ammonia absorber is provided with a detection device, and the power of the compressor can be controlled and changed according to the value of the detection device.

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