The development and main features of digital furnace are introduced, the digital combustion control and its application for product heating are stated, the digital heating curve and burner operating cycle with digital combustion control are analyzed, the new division method——virtual zoning concept adopted by the digital furnace is explained.

The principle and strongpoint of digital burning technique,and advantage in reheating furnace are described as emphasis.

In order to meet the customer needs for that,under not reducing prodnct output and continnous frequently changing different steel mark semifinished prodnct as well as reducing operation cost and rising heating quality,it is first selected furnaec type that the walking beam reheating furnace with the digital pulse combustion control technology.

Combustion parameters were studied from a turbocharged inter-cooled diesel engine under constant speed and increasing torque(CSIT)operating conditions with combustion analyzer.

Based on experience gained in designing and operation, the paper presents a short description of operational adjustment of principal combustion parameters of circulating fluidized bed boilers with the help of a high temperature cyclone seperation device for the segregation of gases and solids.

That means the performance of the ICE combustion data acquisition system must be promoted.