Water-washing type purifying device

Abstract

The invention relates to a water-washing type purifying device comprising a humidifier, a condenser and a cooling water tower; the humidifier is arranged inside a to-be-purified airflow channel and used for increasing the humidity through spraying water mists to passing to-be-purified airflow, improving a dew point temperature, dropping a temperature and removing to-be-purified substances by utilizing water mists; the condenser is arranged inside the to-be-purified airflow channel, located at a downstream end of the humidifier and used for condensing humidified to-be-purified airflow to generate condensed liquor containing to-be-purified substances; the cooling water tower is connected to the condenser, so that the condenser reaches an expected condensing temperature. Therefore, the water-washing type purifying device provided by the invention has the effect of purifying water-soluble volatile organic substances or / and suspended micro-particles.

Description

technical field [0001] The invention relates to a water-washing purification device, especially a design for removing water-soluble volatile organic compounds or / and suspended particles by spraying water mist for washing and utilizing condensation to generate condensed liquid for adsorption. Background technique [0002] Suspended particles (or aerosols) refer to the general term for tiny particles (with a diameter between 0.001 and 10 μm) floating in the air. Because suspended particles have a great impact on the entire environment, except for the impact on climate and human health In addition, there is the impact on industrial production activities; moreover, organic solvents widely used in life and production are very volatile into gases at room temperature, so they are also called Volatile Organic Compounds (Volatile Organic Compounds, VOCs), and Most volatile organic compounds are toxic to the human body and must be purified. [0003] Secondly, if the air stream to be ...

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Problems solved by technology

[0003] Secondly, if the air stream to be purified produced by the industrial production process contains water-soluble volatile organic compounds with high boiling point and low vapor pressure, usually first use such as " figure 1 The condensing device 10 shown in "is separated, and then the volatile organic compounds that have not been separated are subjected to incineration or adsorption and desorption purification treatment by the subsequent purification device; wherein, the condensing device 10 is inside a gas flow channel 11 to be purified A condenser 12 is provided so that the temperature of the air stream to be purified passing through the condenser 12 drops below the dew point temperature, and the condensation of volatile organic compounds and the adsorption of condensed water droplets are used to remove the water-soluble volatile compounds contained in the air stream to be purified. The organic matter is condensed and separated, and then a demister 13 is installed at the downstream end of the condenser 12 to allow the volatile organic matter and water vapor with a smaller particle size to grow and be captured and separated. The condenser 12 is usually connected with the ice water machine 14 However, the ice water machine is a heat exchanger with high energy consumption, and the condensation specification of the ice water machine must be calculated and controlled; then, the subsequent adsorption and desorption purification treatment usually uses porous adsorption materials (activated carbon, zeolite, etc. ) Purify the unpurified volatile organic compounds in the condensing device 10, but the suspended particles will block the pores of the adsorbent, reducing the ability of the adsorbent to absorb volatile organic compounds, and once the suspended particles block the pores of the adsorbent It is difficult to remove, and the service life of the adsorbent is shortened.

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