Operation method for coating exhaust treatment system

An operation method for a coating exhaust treatment system including

• a filter configured to filter discharged air discharged from a coating chamber in which a coating object is spray-coated and collect overspray coating material included in the discharged air, and
• a powder dispersal means configured to disperse powder for forming a filter covering layer in the discharged air and form a filter covering layer made of a layer of the accumulated powder on a surface on the filter as the discharged air passes through the filter,
• the method comprising:
• an exhaust treatment step of dispersing the powder stored in a supply tank in the discharged air using the powder dispersal means and causing the discharged air to pass through the filter;
• a storing step of storing the coating material-containing powder that was removed from the filter through filter cleaning treatment in the exhaust treatment step in a relay tank;
• a separation step of separating the coating material-containing powder in the relay tank into powder to be discarded and powder to be recycled at a set separation ratio set in advance in a fixed manner;
• a discarding step of discarding the powder to be discarded that was separated in the separation step;
• a recycling step of recycling the powder to be recycled that was separated in the separation step with a recycling treatment portion;
• and
• a powder refreshing step of returning the powder recycled in the recycling step to the supply tank and supplying an amount of fresh said powder that is the same as that of the powder discarded in the discarding step to the supply tank, the steps being carried out repeatedly.

An operation method for a coating exhaust treatment system including

• a filter configured to filter discharged air discharged from a coating chamber in which a coating object is spray-coated and collect overspray coating material included in the discharged air, and
• a powder dispersal means configured to disperse powder for forming a filter covering layer in the discharged air and form a filter covering layer made of a layer of the accumulated powder on a surface on the filter as the discharged air passes through the filter,
• the method comprising:
• an exhaust treatment step of dispersing the powder stored in a supply tank in the discharged air using the powder dispersal means and causing the discharged air to pass through the filter;
• a storing step of storing the coating material-containing powder that was removed from the filter through filter cleaning treatment in the exhaust treatment step in a relay tank;
• a sorting step of sorting the coating material-containing powder in the relay tank into unsuitable powder to be discarded and suitable powder to be recycled;
• a discarding step of discarding the unsuitable powder to be discarded that was sorted in the sorting step;
• a recycling step of recycling the suitable powder to be recycled that was sorted in the sorting step with a recycling treatment portion;
• and
• a powder refreshing step of returning the powder recycled in the recycling step to the supply tank and supplying an amount of fresh said powder that is the same as that of the powder discarded in the discarding step to the supply tank, the steps being carried out repeatedly.

An operation method for a coating exhaust treatment system including

• a filter configured to filter discharged air discharged from a coating chamber in which a coating object is spray-coated and collect overspray coating material included in the discharged air, and
• a powder dispersal means configured to disperse powder for forming a filter covering layer in the discharged air and form a filter covering layer made of a layer of the accumulated powder on a surface on the filter as the discharged air passes through the filter,
• the method comprising:
• an exhaust treatment step of dispersing the powder stored in a supply tank in the discharged air using the powder dispersal means and causing the discharged air to pass through the filter;
• a separation/containing step of separating and containing the coating material-containing powder that was removed from the filter through filter cleaning treatment in the exhaust treatment step in mutually different containers for each location at which the discharged air is generated;
• a discarding step of discarding the coating material-containing powder that is contained in a specific container among a plurality of said containers as powder to be discarded;
• a recycling step of recycling the powder contained in another container among the containers as powder to be recycled with a recycling treatment portion;
• and
• a powder refreshing step of returning the powder recycled in the recycling step to the supply tank and supplying an amount of fresh said powder that is the same as that of the powder discarded in the discarding step to the supply tank, the steps being carried out repeatedly.