Printing organic waste gas treatment process and system

Abstract

The invention discloses a printing organic waste gas treatment process and system, and relates to the technical field of printing waste gas treatment. The treatment process includes the following steps of S1, de-dusting pretreatment, S2, photodegradation and S3, filtration. The treatment system using the treatment process includes a dust collection water tank, a UV photodegradation device and an active carbon filter. The bottom and top of the dust collection water tank are connected with a waste gas inlet pipe and a first exhaust pipe respectively, the first exhaust pipe is connected with theair inlet end of the UV photodegradation device, the air outlet end of the UV photodegradation device is connected with the air inlet end of the active carbon filter through a second exhaust pipe, andthe air outlet end of the UV photodegradation device is directly communicated with an external atmospheric environment. According to the printing organic waste gas treatment process and system, printing waste gas is subjected to de-dusting pretreatment, photodegradation and filtration successively, solid impurities such as dust particles, harmful organic gas and a foul smell in the waste gas canbe removed in an all-round way, and the treated waste gas can be directly discharged and is more environmentally friendly.

Description

technical field

[0001] The invention relates to the technical field of printing waste gas treatment, in particular to a printing organic waste gas treatment process and treatment system. Background technique

[0002] Printing waste gas components in the printing industry usually include benzene, toluene, xylene, acetone, methyl ethyl ketone, lipids, ethers and other highly volatile organic waste gases, as well as two-phase suspensions formed after volatilization or atomization of solid materials and solvents It escapes into the surrounding air and also pollutes the air. Exhaust gas pollutants in printing workshop exhaust gas treatment and printing factory exhaust gas treatment come from inks, solvents, thinners and pigments in printing processes such as printing and ink mixing. Organic waste gas is continuously volatilized during the ink mixing, printing and curing processes. 70% of them come from the ink waste gas generated during the printing and ink adjustment process. ...

Examples

Embodiment 1

[0037] Embodiment 1: a kind of printing organic waste gas treatment process comprises the following treatment steps:

[0038] S1. Dust removal pretreatment: Lay a gas collection pipeline in the printing workshop, and the gas collection pipeline collects the printing waste gas in the printing workshop and flows it into the dust collection water tank 1 to remove insoluble solid impurities such as waste gas dust;

[0039] S2. Photolysis treatment: the waste gas treated in the step S1 is passed into the UV photolysis device 2 to degrade the harmful organic gas in the waste gas to obtain the initial purification gas;

[0040] S3. Filtration treatment: pass the preliminary purified gas obtained in step S2 into the activated carbon filter 3, and obtain exhaustable gas after being filtered by activated carbon.

Embodiment 2

[0041] Embodiment 2: refer to figure 1 , a printed organic waste gas treatment system, including a dust collection water tank 1, a UV photolysis device 2 and an activated carbon filter 3. Clean water for dust removal is stored in the dust collection water tank 1. The bottom and top of the dust collection water tank 1 are respectively connected with the waste gas inlet pipe 4 and the first exhaust pipe 5. In order to improve the dust removal efficiency of the dust collection water tank 1, the dust collection water tank 1 A spray mechanism 20 is arranged inside. The spraying mechanism 20 includes a spraying water pipe 23 and several spray nozzles 24. The bottom of the dust collecting water tank 1 is connected with a circulating water pipe 21 communicating with the spraying water pipe 23, and a circulating water pump 22 is installed on the circulating water pipe 21. One end of the first exhaust pipe 5 away from the dust collection water tank 1 is connected with the inlet end of ...

technical field

[0001] The invention relates to the technical field of printing waste gas treatment, in particular to a printing organic waste gas treatment process and treatment system. Background technique

[0002] Printing waste gas components in the printing industry usually include benzene, toluene, xylene, acetone, methyl ethyl ketone, lipids, ethers and other highly volatile organic waste gases, as well as two-phase suspensions formed after volatilization or atomization of solid materials and solvents It escapes into the surrounding air and also pollutes the air. Exhaust gas pollutants in printing workshop exhaust gas treatment and printing factory exhaust gas treatment come from inks, solvents, thinners and pigments in printing processes such as printing and ink mixing. Organic waste gas is continuously volatilized during the ink mixing, printing and curing processes. 70% of them come from the ink waste gas generated during the printing and ink adjustment process. ...

Examples

Embodiment 1

[0037] Embodiment 1: a kind of printing organic waste gas treatment process comprises the following treatment steps:

[0038] S1. Dust removal pretreatment: Lay a gas collection pipeline in the printing workshop, and the gas collection pipeline collects the printing waste gas in the printing workshop and flows it into the dust collection water tank 1 to remove insoluble solid impurities such as waste gas dust;

[0039] S2. Photolysis treatment: the waste gas treated in the step S1 is passed into the UV photolysis device 2 to degrade the harmful organic gas in the waste gas to obtain the initial purification gas;

[0040] S3. Filtration treatment: pass the preliminary purified gas obtained in step S2 into the activated carbon filter 3, and obtain exhaustable gas after being filtered by activated carbon.

Embodiment 2

[0041] Embodiment 2: refer to figure 1 , a printed organic waste gas treatment system, including a dust collection water tank 1, a UV photolysis device 2 and an activated carbon filter 3. Clean water for dust removal is stored in the dust collection water tank 1. The bottom and top of the dust collection water tank 1 are respectively connected with the waste gas inlet pipe 4 and the first exhaust pipe 5. In order to improve the dust removal efficiency of the dust collection water tank 1, the dust collection water tank 1 A spray mechanism 20 is arranged inside. The spraying mechanism 20 includes a spraying water pipe 23 and several spray nozzles 24. The bottom of the dust collecting water tank 1 is connected with a circulating water pipe 21 communicating with the spraying water pipe 23, and a circulating water pump 22 is installed on the circulating water pipe 21. One end of the first exhaust pipe 5 away from the dust collection water tank 1 is connected with the inlet end of ...

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