A method for cleaning a jet engine includes introducing a cleaning medium having solid materials into the engine by way of at least one discharging device, wherein the cleaning medium exits from the discharging device at an exit speed of 80 m/s or less.

Included are methods and systems for recycling a gas emitted from non-aqueous cleaning. An example method includes contacting a contaminated equipment with a non-aqueous cleaning material; wherein the spent non-aqueous cleaning material emits the gas. The method further comprises capturing the emitted gas, filtering the emitted gas, and recycling the emitted gas into the non-aqueous cleaning material.

A method and apparatus produce an enhanced blast stream which may be directed at a workpiece. The enhanced blast stream has higher energy allowing the blast stream to remove difficult to remove coatings from substrates. A heated flow is combined with an entrained particle flow and expelled through a nozzle. The heated flow results in more energy being imparted to the coating.

A device for cleaning adhesive surfaces of vehicle components using solid carbon dioxide is provided. The device may be used for automated cleaning in an assembly line with a plurality of work stations. The device includes a chamber-type cleaning area for vehicle components, a blasting device with a jet nozzle for emitting solid carbon dioxide onto the vehicle components, a transport device for transporting the vehicle components through the cleaning chamber, and a charge discharge device for discharging an electrostatic charge from the vehicle components in order to structurally and/or functionally improve the device.

The present invention relates to a device for producing high-strength CO.sub.2 pellets from CO.sub.2 snow, in particular, for a cleaning device for blasting surfaces to be treated with a mixed-flow consisting of a compressed gas and CO.sub.2 pellets, including a main compressing device for compressing CO.sub.2 snow for forming CO.sub.2 pellets, further including a pre-compressing device for pre-compressing CO.sub.2 snow produced by expanding liquid CO.sub.2, wherein the pre-compressing device is in the form of a fluid-mechanical pre-compressing device, wherein the pre-compressing device includes an expansion device for producing CO.sub.2 snow from liquid or gaseous CO.sub.2 and a pre-compression chamber for receiving and pre-compressing the produced CO.sub.2 snow and wherein the expansion device and the pre-compression chamber are connected to one another in fluidic manner.

The invention relates to a cleaning appliance for blasting surfaces to be treated with a mixed stream of a pressurized gas and CO.sub.2 pellets, said cleaning appliance comprising an apparatus for producing CO.sub.2 pellets from liquid or gaseous CO.sub.2, wherein the apparatus comprises a pre-compression device for compressing CO.sub.2 snow to form the CO.sub.2 pellets, wherein the cleaning appliance comprises a drive device with a drive shaft for driving the compressing device, and wherein the drive shaft, during the intended use of the cleaning appliance, extends in parallel or substantially in parallel to the direction of gravity.

The present invention relates to a process and apparatus to inspect and clean orifices found on extrusion dies, spinnerets and other objects having small holes. Orifices are microscope imaged and digitally measured, and if required the invention performs non-contact orifice cleaning using carbon dioxide dry ice particles.

A method and apparatus produce an enhanced blast stream which may be directed at a workpiece. The enhanced blast stream has higher energy allowing the blast stream to remove difficult to remove coatings from substrates. A heated flow is combined with an entrained particle flow and expelled through a nozzle. The heated flow results in more energy being imparted to the coating.

The present invention is embodied in a carbon dioxide compression and delivery device that uses a plurality of reversible thermoelectric devices and to a method to operate such carbon dioxide compression and delivery device.

A method for conditioning ceramic coating on a part for use in a plasma processing chamber is provided. The ceramic coating is wetted with a solution, wherein the solution is formed by mixing a solvent with an electrolyte, wherein from 1% to 10% of the electrolyte dissociates in the solution. The ceramic coating is blasted with particles. The ceramic coating is rinsed.