Gardner Denver Nash has supplied the global chemical industry with safe and reliable vacuum systems for more than 45 years. Our vacuum pumps, compressors, air ejectors and engineered systems maximize output and efficiency while minimizing maintenance and pollution into the environment. Our solutions are engineered to work smarter. From hermetically sealed pumps that eliminate leakage to engineered hybrid vacuum systems that optimize efficiency, we deliver smarter solutions custom tailored to your specific requirements.
NASH & GARO liquid ring pumps and compressors use a fluid compressant instead of pistons, vanes, or rotating lobes. The liquid ring eliminates metal-to-metal contact and delivers cool running, low maintenance performance. While water is an excellent seal liquid and is often used due to its availability and convenience, we know it is not always compatible with chemical processes applications.
In many chemical applications, trace amounts of water cannot be tolerated in the product, and in some applications, alternative seal liquids can yield process advantages. NASH vacuum pumps and compressors can operate with a variety of liquids including sulfuric acid, benzene, ethylene glycol, gasoline, and many more. Our experienced team of application engineers can recommend a seal liquid that is compatible with your process gases.
In this application, chlorine gas is recovered and compressed. Chlorine gas is lethal, toxic and extremely corrosive therefore special consideration to the compressor material, seal liquid, and system configuration is required. Low pressure chlorine gas applications using high concentration sulfuric acid can be handled by a standard nodular cast iron compressor. With lower operating temperatures and sulfuric acid as a seal liquid, there is little to no risk of rust occurring in the iron, making cast iron a more cost-effective choice than Hastelloy. Conversely, high pressure applications require a compressor casing made from Austenitic Stainless Steel (316L or HC276 for certain applications), with ancillaries in the steel to cater for proper corrosion allowances. Our application specialists and engineers are experienced in the design of chlorine compressors and systems and can configure a solution to meet your process needs.