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Vehicle-mounted air purifier with nano-silver tea-residue biomedical carbon as main filter material

An air purifier and tea residue technology, applied in the field of air purification, can solve the problems of inconvenient installation and disassembly, inability to effectively remove formaldehyde, single filter material, etc., to meet the air quality requirements, the air purification effect is remarkable, and the purification effect is better. Effect

Pending Publication Date: 2017-07-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the traditional air purification devices are bulky, not portable enough and expensive, so they are not suitable for use in the small space inside the car; some low-priced small air purifiers have simple internal purification materials, but the internal structure is complicated, and the air purification effect is low, so they cannot Effectively remove harmful substances such as formaldehyde in the air, and it cannot be disassembled for cleaning, and the long-term effectiveness of its functions cannot be guaranteed
At present, there is an automobile air-conditioning and ventilation system with the application number CN201410707596.9 in my country, which provides a purification device installed in the car, but it is not detachable and does not have portability, and it is mainly through the positive and negative electrodes. The static electricity in the room removes the dust and bacteria in the gas entering the car from the air conditioner, but cannot eliminate the more toxic formaldehyde and other pollutants in the air
The car purification device with the application number CN201620773656.1 has a large choice of shapes, but its structure is complicated, the filter material is single, and it is inconvenient to install and disassemble, and it is difficult to replace the filter material

Method used

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  • Vehicle-mounted air purifier with nano-silver tea-residue biomedical carbon as main filter material
  • Vehicle-mounted air purifier with nano-silver tea-residue biomedical carbon as main filter material
  • Vehicle-mounted air purifier with nano-silver tea-residue biomedical carbon as main filter material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of the tea residue biochar adopted in the present invention is:

[0034] 1) Select the fresh tea leaves after daily use and dry them naturally for 3 days, or place them in a constant temperature drying oven, and dry them at 80°C for 24 hours to obtain a preliminary dried sample;

[0035] 2) Place the dried tea leaves in a tube furnace, pre-flow nitrogen, quickly heat up to a preset temperature of 500° C., and roast at high temperature for 2 hours to prepare tea leaf biochar, and seal and store the biochar.

[0036] The preparation method of the nano-silver tea residue biochar adopted in the present invention is:

[0037] 1) Soak the tea residue biochar in 2% hydrochloric acid solution by mass for 6 hours, wash it with deionized water until the pH is neutral; dry the sample, pulverize it, and pass it through a 60-mesh sieve to obtain the pretreated tea residue biochar. Carbon, put into the vacuum desiccator for subsequent use;

[0038] 2) soak th...

Embodiment 1

[0044] In this example, take 10 mL of formaldehyde solution and place it in a watch glass, put it into a 1.5m×1m×1m sealed box, and after natural evaporation at a constant low temperature (25°C) for 2 hours, take out the watch glass, put the air purifier in Put it into the box, and start the fan after plugging in the power. One end of the sampler is connected to the room, and the other end is connected to the sampling tube (with 10mL distilled water inside to absorb formaldehyde gas). In this experiment, samples were taken every 1 hour, and the concentration of formaldehyde before and after purification was detected by an air flow analysis instrument.

[0045] Table 1 Purification rate of formaldehyde by air purifier

[0046] time Formaldehyde concentration (mg / m 3 )

Embodiment 2

[0048] In this example, take 10g of tobacco, wrap it with cigarette paper, ignite and fix it in two watch glasses, put it into a 1.5m×1m×1m sealed box, volatilize it at a constant low temperature (25°C) for half an hour, and take out the surface Put the air purifier into the box, plug it in and start the fan. One end of the sampler is connected to the room, and the other end is connected to the sampling tube (with 10mL distilled water inside to absorb the gas). The test uses an air flow analysis instrument to detect the concentration of tar, nicotine and other components in the gas before and after purification. The test data is shown in Table 2:

[0049] Table 2

[0050]

[0051]

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Abstract

The invention provides a vehicle-mounted air purifier with nano-silver tea-residue biomedical carbon as the main filter material. The air purifier comprises a shell unit body, air inlets, air outlets, a detachable shell unit body, a fan and a multistage purifying filter net system. The multistage purifying filter net system comprises a primary filter net, a I-level tea-residue biomedical carbon filter net, an HEPA filter net, a II-level nano-silver tea-residue biomedical carbon filter net and a III-level nano-silver tea-residue biomedical carbon filter net; and the detachable shell unit body is arranged on the shell unit body, the air outlets are formed in the upper bottom surface of the shell unit body, and the air inlets are formed in the lower bottom surface of the shell unit body. The vehicle-mounted air purifier with the nano-silver tea-residue biomedical carbon as the main filter material is easy to assemble and operate, capable of reducing cost, convenient to disassemble and carry, capable of being assembled in use, and applicable to various environments; and the tea-residue biomedical carbon and the nano-silver tea-residue biomedical carbon are used as the main filter material, the vehicle-mounted air purifier has the advantages of low cost, high purification and filter speed, and can be used in vehicles or used for domestic air purification.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a vehicle-mounted air purifier with nano-silver tea residue biochar as the main filter material. Background technique [0002] In-vehicle air pollution refers to the poor air quality inside the vehicle due to lack of ventilation, car body decoration and other reasons. The air pollution sources in the car mainly come from the car body itself (car air conditioner), decorative materials (such as plastic parts in the car, carpets, roof felts, sofas and other products that do not meet the requirements), as well as pollution outside the car, car exhaust, etc. Common car air pollution Pollutants include formaldehyde, xylene, benzene, carbon monoxide, heavy metals, microbial viruses and bacteria. [0003] With the rapid development of the economy, people have higher and higher requirements for the quality of life, and the air problem has become a hot topic in recent years. Wit...

Claims

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Application Information

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IPC IPC(8): B60H3/06B01D46/00B01D46/12A61L9/013A61L101/56
CPCA61L9/013B01D46/0028B01D46/0036B01D46/12B60H3/0616B60H3/0633B60H2003/0691B01D46/64
Inventor 利锋韦艳莎
Owner SOUTH CHINA UNIV OF TECH
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