Analyze the basic principle of waste heat boiler

Waste heat boilers are divided into fire tube heat exchangers and water pipe type. Its structure is similar to that of industrial production boilers. The waste heat boiler of the fire tube heat exchanger has a large water output, and the steam pressure is less unstable under the condition that the smoke volume and the amount of gas and steam used are not firm, but the water surface evaporation and steam pressure are constrained by the diameter of the cylinder and the operating standard.

In addition, the exhaust system hydraulic steel pipe and head due to poor cooling and temperature thermal stress is relatively large, in the case of high smoke temperature (higher than 600℃), thick head is not suitable for this type of boiler, and it is appropriate to use water pipe waste heat boiler. There are two kinds of circulation system methods: help circulation and natural circulation.

Waste heat boiler A boiler that uses the gas or industrial waste gas, sewage in the industrial production process, and the calorific value of the exhaust steam pipe of some motor equipment to form steam or boiling water. Waste heat boiler is a very important energy-saving equipment. The exhaust system temperature of melting furnace and culture kiln is 650~1250℃; The exhaust pipe temperature of small steam turbine and diesel engine and other motor equipment is 370~540℃.

Equipment waste heat boiler digest part of the heat value of such exhaust system, and the thermal engineering utilization rate of the whole management system can be significantly improved. For example, after the waste heat boiler of the rolling furnace equipment, the utilization rate of the thermal energy engineering of the whole operating system can even be improved by about 1 times.