De­vel­op­ment of a pro­cess for in­dus­tri­al parts clean­ing based on shock waves and ionic liq­uids in dense phase car­bon diox­ide

IGF 17327 N

With­in the pro­ject a pro­cess has been de­vel­oped for clean­ing of in­dus­tri­al parts on the basis of shock waves, ionic liq­uids and fur­ther ad­di­tives in com­pressed car­bon diox­ide. The use of ionic liq­uids and other clean­ing ad­di­tives as well as shock or pres­sure waves was in­ves­ti­gat­ed. On film-like un­po­lar soils a good clean­ing ef­fi­cien­cy was shown by pure com­pressed car­bon diox­ide. With a mod­i­fied spray clean­ing sys­tem in com­bi­na­tion with small amounts of ethanol as an ad­di­tive an ef­fec­tive re­moval of film-like polar soils was ob­tained. Sim­i­lar re­sults were achieved with this sys­tem for par­tic­u­late film-like polar soil com­bi­na­tions. The re­moval of saline soils was only par­tial­ly pos­si­ble. How­ev­er, it is like­ly that with the ad­di­tion of in­creased amounts of water saline soils could also be re­moved. With the new pro­cess com­bi­na­tions of polar, non­po­lar and par­tic­u­late soils can be re­moved more ef­fec­tive­ly than with pre­vi­ous meth­ods.

The research report is available on request from FRT.

The IGF-pro­ject IGF 17327 N of the re­search as­so­ci­a­tion Europäische Forschungs­ge­mein­schaft Reini­gungs- und Hy­gien­etech­nolo­gie e.V., Cam­pus Ficht­en­hain 11, 47807 Krefeld, was sup­port­ed with­in the fund­ing pro­gram „In­dus­trielle Gemein­schafts­forschung und -en­twick­lung (IGF)“ by the Fed­er­al Min­istry of Eco­nom­ic Af­fairs and Cli­mate Ac­tion due to a de­ci­sion of the Ger­man Par­lia­ment.