Edition 01/16

Besides the process gas team of 45 at the parent company, our subsidiaries in Hungary and the U.S.A. also have essential know-how and separate capacity for the process gas business. PGD Hungary, in Esztergom, primarily distinguishes itself through its wide range of manufacturing capabilities. Besides Sales and Engineering, all the piping and welding work according to ASME and PED, switch cabinet construction, packaging, leakage tests with acceptance tests witnessed by the customer at site, are also carried out. Short distances and a young, dynamic team make PGD Hungary flexible and efficient. As a result of intensive co-operation with the quality control division in Aerzen, the quality standards in production have improved considerably of late.

PGD Hungary recently designed and manufactured a chlorine liquefaction plant for a system manufacturer in Germany. Chlorine is used for the disinfection of water and for manufacturing many substances such as PVC, pharmaceuticals, as well as intermediate products. Two VMY 156 M-NR packaged units operate an ammonia refrigeration circuit for the cooling of ethylene glycol. This serves to dissipate heat and thus for liquefaction of 95 per cent of the chlorine vapour, which is produced electrolytically. The system has been installed in a chemical factory in Switzerland.

In the U.S.A., six additional process gas specialists work in sales, engineering and project management of process gas projects. As in Hungary, as a rule only the blower or compressor stage is supplied from Aerzen. It is designed through co-ordination with both groups. Packaging is made by local plant manufacturers, meeting the high AERZEN quality standards. Recently, PGD U.S.A. handled the largest project in AERZEN company history for a new chemical factory in Louisiana: a fuel gas mixture is drawn off the process by means of GM 19.19 HV vacuum blowers and compressed and cooled by a VRa 136 S compressor to six bar in the final stage. The complex, redundant four-stage system comprises four blower and two VR compressor stages, intermediate cooling, condensation, intermediate pressure management, control system, as well as very extensive documentation. When the plant is completed, about 40 AERZEN packaged units will be running there: these include special instrument air packaged units, VM compressors for pneumatic conveyance, Delta Blowers for the wastewater treatment plant and HV blowers for various processes.