Air purification device and method

[0028] Such as figure 1 Shown is the first embodiment of the VOC exhaust gas treatment and purification device of the present invention, which includes a housing 100 and an air inlet fan 200 disposed in the housing 100, a molecular sieve purification assembly 300, an air outlet assembly 400, and a molecular sieve 301 circulation assembly. The air inlet fan 200 and the air outlet assembly 400 are arranged on both sides of the molecular sieve purification assembly 300 respectively; The purified air treated by the molecular sieve purification component 300 is discharged through the air outlet component 400; the molecular sieve purification component 300 and the molecular sieve 301 circulation component are connected to form a molecular sieve 301 circulation loop for heating, desorption and cooling of the molecular sieve 301.

[0029] During the implementation of this embodiment, the air to be purified is pumped into the air purification device through the air intake fan 200, and the

[0038] The second embodiment of the VOC waste gas treatment and purification device of the present invention is similar to the first embodiment, the difference is that this embodiment also includes a waste heat recovery system 800 for recovering the heat generated during the desorption process of the molecular sieve 301, Compared with the first embodiment, this embodiment has better energy saving and environmental protection.

[0039] Such as figure 2 As shown, the waste heat recovery system 800 includes a heat storage tank 801 and a cooling pipe installed in the heat storage tank 801. One end of the cooling pipe is connected to the bottom of the first hot air cabinet 508, and the other end of the cooling pipe is connected to the first hot air cabinet. The top of the cabinet 508, the top of the first hot air cabinet 508 also communicates with the first cold air cabinet 511, and the second hot air cabinet 510 is provided with a heat return channel 803 connecting the top of the se

[0046] This embodiment is the embodiment of air purification method, including air purification method and molecular sieve desorption method:

[0047] Molecular sieve purification method: the air to be purified after dust removal is pumped into the molecular sieve purification assembly 300 under the action of the air inlet fan 200; when the air to be purified flows through the molecular sieve 301, VOC is absorbed to obtain purified air, and the purified air is discharged through the air outlet assembly 400 ;

[0048]Molecular sieve desorption method: Molecular sieve 301 adsorbed with VOC falls to the first guide rail 304 and is guided by the first guide rail 304 to the conveying assembly 500. During the transportation, it is heated and desorbed, cooled and then returned to the second guide rail 305, and passed through the second guide rail 304. The guide rail 305 guides to the molecular sieve purification assembly 300 for reuse.

[0049] Among them, in order to achieve a better