CN210097302U - Green purification system of air separation plant - Google Patents

Abstract

The utility model discloses a green purification system of air separation plant: the purifier comprises a purifier body, wherein the purifier body sequentially comprises an air inlet cavity, a purification cavity and an air outlet cavity along the air flowing direction; the air inlet cavity, the purification cavity and the air outlet cavity are sequentially communicated; a plurality of purification channels are arranged in the purification cavity, one end of each purification channel is communicated with the air inlet cavity, and the other end of each purification channel is communicated with the air outlet cavity; and an activated alumina particle structure and a molecular sieve particle structure are arranged in the purification channel, and the activated alumina particle structure and the molecular sieve particle structure are alternately filled in the purification channel along the airflow direction. The utility model discloses an active alumina granular structure and molecular sieve granular structure's packing in turn, vapor, CO2, N2O and hydrocarbon in can more effective adsorption air to the purification effect to the air is better.

Description

Green purification system of air separation plant

Technical Field

The utility model relates to an empty oxygen generation technical field that divides especially relates to an empty green purification system of device of dividing.

Background

At present, the air is purified and purified through a molecular sieve in the process of oxygen production of an air separation plant, and water vapor, CO2, N2O, hydrocarbon and the like in the air are removed, but the existing molecular sieve is simple in structure, poor in impurity removal effect on the air, and more in finally obtained product impurities are caused. There is therefore a need for an efficient air purification apparatus.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the deficiencies in the prior art, the utility model provides a green purification system of air separation plant.

The technical scheme is as follows: in order to achieve the above object, the utility model discloses a green purification system of air separation plant: the purifier comprises a purifier body, wherein the purifier body sequentially comprises an air inlet cavity, a purification cavity and an air outlet cavity along the air flowing direction; the air inlet cavity, the purification cavity and the air outlet cavity are sequentially communicated; a plurality of purification channels are arranged in the purification cavity, one end of each purification channel is communicated with the air inlet cavity, and the other end of each purification channel is communicated with the air outlet cavity; an activated alumina particle structure and a molecular sieve particle structure are arranged in the purification channel, and the activated alumina particle structure and the molecular sieve particle structure are alternately filled in the purification channel along the airflow direction; through the alternate filling of the active alumina particle structure and the molecular sieve particle structure, the water vapor, CO2, N2O and hydrocarbon in the air can be more effectively adsorbed, so that the air purification effect is better.

Furthermore, the purifying channel is arranged in a cone shape along the air flowing direction, and the aperture of the air inlet end of the purifying channel is smaller than that of the air outlet end of the purifying channel, so that when the air flows in the purifying channel, the contact area of the air and the alumina particle structure and the molecular sieve particle structure is larger and larger, and the purifying effect of the air is good.

Furthermore, the air inlet structure further comprises an air baffle plate, wherein the air baffle plate is arranged at an air inlet in the air inlet cavity through a support column, and the plate surface of the air baffle plate is perpendicular to the air inlet direction; the air baffle plate enables the air entering the air inlet cavity from the air inlet to be filled in the whole air inlet cavity, and the air can enter the purification channel from the air inlet of each purification channel uniformly.

Furthermore, the purifier also comprises a waste nitrogen storage device and an electric heating structure, wherein the air outlet end of the waste nitrogen storage device is communicated with the air inlet end of the electric heating structure, and the air outlet end of the electric heating structure is communicated with the air outlet cavity of the purifier body through a pipeline; the air inlet cavity of the purifier body is communicated with the waste nitrogen storage device through a pipeline; dirty nitrogen gas through after the heating regenerates this internal active alumina particle structure of clarifier and molecular sieve particle structure to be favorable to the used repeatedly of clarifier body, also need not operating personnel to dismantle the clearance with the clarifier body from air separation plant in, improved air separation plant system oxygen efficiency.

Furthermore, a heating channel is arranged in the electric heating structure, and two ends of the heating channel are respectively communicated with an air inlet end and an air outlet end of the electric heating structure; a plurality of heating plates which are parallel to each other are arranged in the heating channel, the plate surface of each heating plate is perpendicular to the flow direction of the waste nitrogen, and a plurality of air holes are formed in each heating plate; the dirty nitrogen that makes pass through from the heating channel contacts the face intensification of hot plate, and is high to dirty nitrogen heating effect like this, can make the dirty nitrogen who gets into the clarifier body fully can reach the required temperature of regenerating active alumina particle structure and molecular sieve particle structure.

Has the advantages that: the utility model discloses an air separation plant green purification system, which is characterized in that a conical purification channel with gradually increased aperture along the air flowing direction is arranged in a purifier body, and an active alumina particle structure and a molecular sieve particle structure are alternately filled in the purification channel; the activated alumina particle structure and the molecular sieve particles are more favorable for adsorbing water vapor, CO2, N2O and hydrocarbon in the air, so that the air purification effect is better.

Drawings

FIG. 1 is a partial block diagram of a purification system of the present invention in an air separation plant;

fig. 2 is a schematic view of the internal structure of the purifier body of the present invention;

fig. 3 is an internal structural schematic diagram of the electric heating structure of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

An air separation plant green purification system as shown in figures 1-3: the purifier comprises a purifier body 1, wherein the purifier body 1 sequentially comprises an air inlet cavity 11, a purification cavity 12 and an air outlet cavity 13 along the air flowing direction; the gas inlet cavity 11, the purification cavity 12 and the gas outlet cavity 13 are sequentially communicated; still including air baffle 111, air baffle 111 passes through the air inlet 110 department of support column setting in air intake cavity 11, just air baffle 11's face perpendicular to air intake direction sets up. The air rebounds in all directions after colliding with the air baffle, so that the air entering from the air inlet 110 is prevented from always entering into the opposite purifying channel 121 along the advection in the air inlet cavity 11; the air entering the air inlet cavity 11 from the air inlet 110 is filled in the whole air inlet cavity 11, the air is uniformly purified from the air inlets of the purifying channels 121, and the air entering the air inlet cavity 11 is dispersed into the purifying channels 121 for purification, so that the air purification effect is better. A plurality of purification channels 121 are arranged in the purification cavity 12, one end of each purification channel 121 is communicated with the gas inlet cavity 11, and the other end of each purification channel 121 is communicated with the gas outlet cavity 13; the purifying channel 121 is arranged in a cone shape along the air flowing direction, and the aperture of the air inlet end of the purifying channel 121 is smaller than that of the air outlet end of the purifying channel, so that the contact area of the air and the alumina particles and the molecular sieve particles is larger and larger when the air flows through the purifying channel 121, and the purifying effect of the air is good. The purification channel 121 is internally provided with an activated alumina particle structure 122 and a molecular sieve particle structure 123, the activated alumina particle structure 122 is formed by a plurality of activated alumina particles, the molecular sieve particle structure 123 is formed by molecular sieve particles, and the activated alumina particle structure 122 and the molecular sieve particle structure 123 are alternately filled in the purification channel 121 along the airflow direction, so that when impurities in the air are purified and adsorbed, compared with the case that the activated alumina particle structure 122 and the molecular sieve particle structure 123 are sequentially distributed along the airflow direction, the activated alumina particle structure 122 and the molecular sieve particle structure 123 in the present embodiment are alternately distributed, when the activated alumina particle structure 122 and the molecular sieve particle structure 123 at the front end of the purification channel lose the purification effect due to the adsorption of the impurities, the activated alumina particle structure 122 and the molecular sieve particle structure 123 at the rear end can still purify and adsorb the impurities in the air, therefore, the purifier body in the embodiment has better air purification effect.

The purifier comprises an air cooling tower 2 and a main heat exchanger 3, wherein the air cooling tower 2, a purifier body 1 and the main heat exchanger 3 are communicated through pipelines in sequence; an air inlet pipeline 14 and an air outlet pipeline 15 are respectively arranged on the purifier body 1, and a first switch valve 141 and a second switch valve 151 are respectively arranged on the air inlet pipeline 14 and the air outlet pipeline 15; the purifier also comprises a waste nitrogen storage device 4 and an electric heating structure 5, wherein the air outlet end of the waste nitrogen storage device 4 is communicated with the air inlet end of the electric heating structure 5, and the air outlet end of the electric heating structure 5 is communicated with an air outlet cavity 13 of the purifier body 1 through an air inlet heating pipeline 16; the air inlet cavity 11 of the purifier body 1 is communicated with the waste nitrogen storage device 4 through an air outlet heating pipeline 17; the inlet heating pipe 16 and the outlet heating pipe 17 are respectively provided with a third switch valve 161 and a fourth switch valve 171. When the activated alumina particle structures 122 and the molecular sieve particle structures 123 in the purifier body 1 are not to be regenerated, the third switch valve 161 and the fourth switch valve 171 are closed, and the first switch valve 141 and the second switch valve 151 are opened, so that the purifier body 1 purifies the air; when the activated alumina particle structures 122 and the molecular sieve particle structures 123 in the purifier body 1 need to be regenerated, the first switch valve 141 and the second switch valve 151 are closed, and the third switch valve 161 and the fourth switch valve 171 are opened, so that the purifier body 1 stops purifying the air.

A heating channel 51 is arranged in the electric heating structure 5, and two ends of the heating channel 51 are respectively communicated with an air inlet end and an air outlet end of the electric heating structure 5; a plurality of heating plates 52 which are parallel to each other are arranged in the heating channel 51, and terminals of the heating plates 52 are directly connected with an external power supply; a temperature controller is arranged at the air outlet end part in the heating channel 51, and the signal output end of the temperature controller is connected with the signal input end of a switch on a wire of the heating plate 52 connected with an external power supply; whether the heating plate is electrified or not is controlled through the temperature sensor, so that the temperature of the polluted nitrogen when the polluted nitrogen is discharged out of the heating channel is controlled to reach the target temperature. The plate surface of the heating plate 52 is perpendicular to the flow direction of the waste nitrogen, and a plurality of air holes 521 are formed in the heating plate 52; the dirty nitrogen passing through the heating passage 51 is heated by contacting the plate surface of the heating plate 52, so that the dirty nitrogen is heated with a high heating effect, and the dirty nitrogen entering the purifier body 1 can sufficiently reach the temperature required for regenerating the activated alumina particle structure 122 and the molecular sieve particle structure 123.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (5)

1. The utility model provides an air separation plant green purification system which characterized in that: the purifier comprises a purifier body (1), wherein an air inlet cavity (11), a purification cavity (12) and an air outlet cavity (13) are sequentially arranged in the purifier body (1) along the air flowing direction; the air inlet cavity (11), the purification cavity (12) and the air outlet cavity (13) are sequentially communicated; a plurality of purification channels (121) are arranged in the purification cavity (12), one end of each purification channel (121) is communicated with the air inlet cavity (11), and the other end of each purification channel is communicated with the air outlet cavity (13); active alumina particle structures (122) and molecular sieve particle structures (123) are arranged in the purification channel (121), and the active alumina particle structures (122) and the molecular sieve particle structures (123) are alternately filled in the purification channel (121) along the air flow direction.

2. The air separation plant green purification system of claim 1, characterized in that: the purification channel (121) is arranged in a conical shape along the air flowing direction, and the aperture of the air inlet end of the purification channel is smaller than that of the air outlet end of the purification channel.

3. The air separation plant green purification system of claim 1, characterized in that: the air intake structure is characterized by further comprising an air baffle plate (111), wherein the air baffle plate (111) is arranged at an air inlet (110) in the air intake cavity (11) through a support column, and the surface of the air baffle plate (111) is perpendicular to the air intake direction.

4. The air separation plant green purification system of claim 1, characterized in that: the purifier is characterized by further comprising a waste nitrogen storage device (4) and an electric heating structure (5), wherein the gas outlet end of the waste nitrogen storage device (4) is communicated with the gas inlet end of the electric heating structure (5), and the gas outlet end of the electric heating structure (5) is communicated with a gas outlet cavity (13) of the purifier body (1) through a pipeline; the air inlet cavity (11) of the purifier body (1) is communicated with the waste nitrogen storage device (4) through a pipeline; and regenerating the activated alumina particle structure (122) and the molecular sieve particle structure (123) in the purifier body (1) by the heated waste nitrogen.

5. The air separation plant green purification system of claim 4, characterized in that: a heating channel (51) is arranged in the electric heating structure (5), and two ends of the heating channel (51) are respectively communicated with an air inlet end and an air outlet end of the electric heating structure (5); a plurality of parallel heating plates (52) are arranged in the heating channel (51), the plate surface of each heating plate (52) is perpendicular to the flow direction of the waste nitrogen, and a plurality of air holes (521) are formed in each heating plate (52).

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