US 10,610,876 B2Granted

Method for operating a surface treatment plant

AssigneeEisenmann SE

InventorsGeorg Froehlich, Juergen Roeckle

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Abstract

A method for operating a surface treatment plant, resulting overspray in a coating booth is taken up by an air flow. The air flow loaded with overspray is conveyed as exhaust air flow to at least one separation unit in which overspray is separated out. In a supply region upstream of the at least one separation unit and/or in an internal space of the at least one separation unit, a filter aid having a separation aggregate state is added to the exhaust air flow and forms, with the overspray, a separation mixture which is separated in or at the at least one separation unit. The filter aid used is solid or liquid in the separation aggregate state. In the at least one separation unit, conditions are established in which the filter aid transitions from the separation aggregate state into a gaseous aggregate state such that the gaseous filter air can separate from the separation mixture.

Claims7

Dependent claims

A method for operating a surface treatment plant comprising the steps of:

a) absorbing overspray, which occurs in a coating booth, in an airflow;
b) conducting the overspray-laden airflow as exhaust airflow to at least one separation unit in which the overspray is separated out;
c) feeding a filtration aid material, which features a separation aggregate state, to the exhaust airflow in a feed region upstream of the at least one separation unit and/or in an interior of the at least one separation unit, which filtration aid material forms with the overspray a separation mixture which is deposited in or on the at least one separation unit,
wherein
d) the filtration aid material is solid or liquid in the separation aggregate state;
and
e) conditions are created in the at least one separation unit in which the filtration aid material undergoes a phase change and changes from the separation aggregate state into a gaseous aggregate state so that the gaseous filtration aid material can be separated from the separation mixture and reduce the amount of filtration aid material deposited on the at least one separation unit.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/543,705Filed 9 Jan 2016
Priority: DE 10 2015 000 58516 Jan 2015
Published: US 2017/0368566 A128 Dec 2017
Granted: 7 Apr 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B05B 14/437
By filtering the air charged with excess material: with means for introducing solid material into the air charged with excess material for…
B01D 46/10
Filters or filtering processes specially modified for separating dispersed particles from gases or vapours: particle separators, e.g. dust…
B01D 2273/12
Operation of filters specially adapted for separating dispersed particles from gases or vapours: influencing the filter cake during filtration…
Y02P 70/10
Climate change mitigation technologies in the production process for final industrial or consumer products: greenhouse gas [GHG] capture, material…