Charged water spray printing and dyeing waste gas treatment device and method
A waste gas treatment device and water mist technology, applied in chemical instruments and methods, electrode structures, electrostatic separation, etc., can solve the problems of large-scale circulating water treatment equipment, large secondary pollution of dusty wastewater, and increased operation and maintenance workload. problems, to achieve the effect of saving related costs, avoiding secondary pollution, and compact structure
Pending Publication Date: 2016-02-03
SHANGHAI MUNICIPAL ENG DESIGN INST GRP +1
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Problems solved by technology
However, the third-generation water mist charging dust removal technology sprays a large amount of water mist in the dust removal area. Due to the large space in the dust removal area, the amount of water required for spraying is also large, resulting in large secondary pollution of dusty wastewater and the required cycle time. Water treatment equipment is large in scale, large in floor area, high in cost, and the workload of operation and maintenance also increases accordingly
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[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that all the drawings of the present invention are in simplified form and use inaccurate scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0029] The charged water mist printing and dyeing exhaust gas treatment method provided by the invention, such as figure 1 As shown, it includes a main housing 100 arranged horizontally and horizontally. The inside of the main housing 100 is divided into a pre-charge area, a dust removal area, a water mist removal area and a discharge area in sequence along the flow direction of the exhaust gas (arrow direction in the figure). A liquid collection tank 150 is arranged below the dust removal area, the inl...
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The invention relates to a charged water spray printing and dyeing waste gas treatment device and method. The device comprises a main casing which is arranged horizontally and transversely, wherein the inner portion of the main casing is sequentially divided into a pre-charge zone, a dust removing zone, a water spray removing zone and a discharging zone in the flowing direction of waste gas; a liquid collecting tank is arranged below the dust removing zone; an inlet end of the pre-charge zone is connected with a general gas inlet pipe; and an outlet end of the discharging zone is connected with a chimney reaching to the sky. The device integrates a plurality of functions such as pre-charging of inlet gas, water spray charging dedusting, collection of waste gas containing dust, waste gas purification and water spray removal, waste gas negative-pressure suction and high-altitude discharge and the like, so that not only large-particle fiber dust in printing and dyeing waste gas can be removed, but also submicroscopic dust particles and oil droplets which cannot be captured by a traditional dry type electrostatic precipitator can be eliminated. Operation of engineering projects indicates that the efficiency for processing waste gas of a setting machine reaches more than 95 %, and the discharged waste gas is fogless, colorless and odorless.
Description
technical field [0001] The invention relates to the field of printing and dyeing waste gas treatment, in particular to a charged water mist printing and dyeing waste gas treatment device and method. Background technique [0002] The printing and dyeing industry is one of the heavy polluting industries in my country, with a huge amount of sewage and waste gas emissions. Among them, the waste gas of printing and dyeing setting machines is the focus and difficulty of energy saving and emission reduction in the printing and dyeing industry. Generally, the temperature of hot air in the setting machine is about 200°C, and the temperature leaving the setting machine is about 170°C. Through the heat exchanger, the high-temperature hot air is exchanged with fresh air, which can recover high heat. At the same time, due to the drop in temperature, the flue gas Some of the gaseous hydrocarbons in the heat exchanger are condensed into tiny particles, and then aggregated into large partic...
Claims
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Login to View More IPC IPC(8): B03C3/017B03C3/04B03C3/41
Inventor 张华李燕飞路彩英
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP