A food manufacturer in Guangzhou needs to replace the existing boiler equipment. The service life of its boiler equipment is expired, which does not comply with the latest environmental regulations on flue gas emission. The factory produces more than 100 million cans of food every year. It needs to generate 10 tons of steam per hour for space heating and sterilization of canned food. Although the steam demand is stable, there are 36 hours of slow rising process and 24 hours of slow falling process. The steam demand is different in summer and winter because the heating demand is greater in winter and more steam needs to be produced.

Solution:

In view of these changes in demand and in order to meet the latest environmental regulations, the new energy center has installed four boilers, each equipped with two gas burners provided by hamworth combustion. The burner is equipped with a fan to pressurize the air for combustion. The eight fans are respectively controlled by 55 kW ABB standard drives. These drives can change the fan speed and control the injected air volume according to the need of high fire or low fire. AC drives are specified in the factory to allow for changes in demand.

Benefits and effects:

The communication function of ABB drive makes it easy to integrate with the process automation system and programmable logic controller (PLC) of the factory. Since the installation of drives on the cleaning line, they have been running without any problems, and the factory does not need to intervene in their operation in any way.