What is the device air used for?

Pneumatic control valves use instrument air, while process air is generally used for purging and pressing; in some cases, the two can be used interchangeably.

Purging or utilizing the oxygen present in the components to participate in the reaction; for example, gasification furnaces can use pure oxygen as well as air, taking advantage of the oxygen contained in the air

1. It can be used to create purge lines for use in production, startup/shutdown operations, and maintenance purging； 2. It can be used as process air for the system ； o 3. Providing power: Due to explosion-proof requirements, some devices use air as a source of power for certain mechanical equipment such as mixers and pumps.

Instrument air is produced by filtering and drying process air, which generally cannot be used directly as instrument air.

1. The commissioning, purging, and blasting phase of the unit can be used for purging pipelines； However, gas used for combustible or hazardous pipelines in production, start-up/shutdown operations, and maintenance purging cannot be industrial air; nitrogen must be used instead ； 2. Provide power: Due to explosion-proof requirements, some devices use air as a source of power for certain mechanical equipment such as mixers and pumps, for example, pneumatic diaphragm pumps ； 3. It may be used as a raw material in production, but it seems that the question raised by the original poster is about the presence of such devices in each setup – namely, what’s known as industrial air ； 4. In the event of a failure in the instrument air (purified air), industrial air can be used, after passing through purification facilities, to supply air to the purified air system.

Instrument air is used for pneumatic instrument valves, while plant air serves as the power source for hand pumps.

It is still used for instrument air; some devices can also be used to prevent catalyst charring

The air used for instruments and valves is instrument air, which is different from the air used in the factory. Instrument air has a stable pressure, and high requirements are placed on its dew point, as some valves are used in cryogenic applications; if such air were used there, it could cause blockages due to freezing. Factory air is utilized in utility systems, usually together with water, steam, and nitrogen – these together form a utility station that is used in emergency situations. For example, before maintenance, nitrogen is used to displace flammable gases, followed by the use of air, in order to ensure safety and increase the oxygen level. Also, some solid materials can be cooled with air and transported after passing the dehydrogenation process. Reagents are also provided during high-pressure oxidation.