Process gas boilers with bypass for steam methane reformers

摘要

Process gas boilers are a special type of shell-and-tube heat exchanger installed in hydrogen,ammonia and methanol plants for cooling hot process gas discharged from steam methane refom-ing (SMR) units.For instance,process gas boilers installed in ammonia plants receive the gas at 950-l,050°C and 3-4 MPa(a) and cool it down to 350-550°C by means of high-pressure boiling water.Due to the severe operating conditions and demanding process performance,process gas boilers are critical equipment for SMR units.