Brewery in Wales with new Bosch steam boiler
Following an analysis of its energy requirements, a brewery based in Wales, UK decided to renew its steam generation. Bosch fulfilled the requirements of increased efficiency, economy and reliability with a steam boiler system Universal UL-S.
A boiler unit with eleven tonnes of steam capacity was in use for providing energy to various production processes, such as mashing, cooking and cleaning. The output reduction for the new system to six tonnes resulted from a thorough investigation of the actual consumption values in the brewery operation. The optimised, needs-based plant design, in conjunction with modulating firing with a control range of 1 : 7, minimises the frequency of burner switching and energy loss by pre-ventilating the flue gas paths.
The new steam boiler is equipped with an integrated economizer to further increase the energy efficiency. This uses the hot flue gases to preheat the feed water. That results in an efficiency rate rise of almost seven percent and reduces energy usage. Low-emission firing of natural gas is used for the boiler. The use of oxygen control improves the efficiency of the burner system and helps to save energy costs. It continually measures the residual oxygen content in the flue gas and controls the air supply accordingly.
Boiler control BCO with Condition Monitoring basic for efficiency and status monitoring completes the system. The control continuously records and evaluates a large number of operating states, operating data and measured values, and it displays the results in a meaningful diagnostic way. The integrated monitoring and protective functions provide operating and supply safety. Operating messages and up-to-date process data from the steam boiler system are transmitted by means of Ethernet via the link to the brewery's process control centre.
The brewery now benefits with the new boiler system from energy-optimised steam generation. The control unit provides a high level of boiler availability and ensures that there is permanently economical operation. Bosch Thermotechnology Ltd in the UK was at the customer's side with its expertise throughout the entire course of the project on site, as well as for the instruction and training of the operators.