UPGRADING YOUR AIRCRETE FACTORY INTRODUCTION ZVETAN NAYDENOV EOOD

UPGRADING YOUR AIRCRETE FACTORY

INTRODUCTION “ZVETAN NAYDENOV” EOOD works in the aerated concrete sector more than 14 years n Very high employee expertise in YTONG technology n Very rich international experience – the company has executed projects in France, Serbia, The Netherlands, Russia and China n Subcontractors developing automation and project designers have more than 10 years of experience with YTONG, working together with “ZVETAN NAYDENOV” on most of the international projects n

GENERAL GUIDELINES n The following slideshow is a list of areas that are crucial for any factory n Our company can offer various solutions to improve quality and efficiency in these areas n More specific and customized list with recommendations will be prepared after we receive the necessary technical documentation and visit your factories

STEAM ACCUMULATOR Vessel used to store steam otherwise released in the atmosphere n A system much more advanced than steam transfer, because it n – Eliminates human factor – Does not depend on perfect production timing n n n The most profitable investment for a factory with ROI of up to 60%/year The residual steam can also be used for heating the heating chamber and heating tunnel No additional costs once complete We offer complete automation and integration Executed by our company in the two Xella factories in Bulgaria

USING HEAT EXCHANGERS TO PREHEAT THE WATER IN THE BOILER n This system uses two or more heat exchangers – one at the exhaust point of the autoclave, the other transfers heat from the hot condensate that is released during autoclaving. n No additional investment once complete n Rapid ROI – up to 60%/year n Executed by our company in the two Xella factories in Bulgaria

AUTOCLAVE INSULATION Relatively cheap way to improve efficiency if necessary n Technology requires at least 120 mm insulation n Looks easy but requires experience, because of the size and shape of the autoclaves n Executed by our company in Bulgaria and Netherlands n

HEATING TUNNEL n n n The place where the forms stay before they get cut Important step for product quality A lot of savings can be made with efficient heating Automation and proper temperature measurement are mandatory Difficult to estimate ROI, because of the positive effects on product quality Our company has upgraded heating chambers in Bulgaria, Serbia and France.

HEATING CHAMBER The place where the forms stay after they get cut, right before autoclaving n High target temperature of about 80˚C requires proper insulation and efficient heating n Heating chambers upgraded in Bulgaria and Serbia n

ALUMINUM INSTALLATION Mostly related to product quality Could potentially create problems with authorities due to high fire-safety standards n Executed in Bulgaria and Russia n n

VACUUM SYSTEM n n Vacuuming is a very important phase of production Linked both to product quality and production time Executed in Bulgaria, France and China We have own technology – Reuses water – Almost maintenance free

“ZVETAN NAYDENOV – ZEZO B – 1” LLC 30 Bratya Peshevi str. Sofia, Bulgaria tel/fax: +359 2 9714602 tel/fax: +35928734369 email: office@zezob. com www. zezob. com