(Basic knowledge) How many main types of circulating fluidized bed boilers are there?

There are three types: 1. DHX-type circulating fluidized bed steam boiler； 2. SHX type circulating fluidized bed steam boiler ； 3. QXX external circulation fluidized bed hot water boiler.

1. Based on the operating temperature of the separator, they can be classified into three types: circulating fluidized bed boilers using high-temperature separators, those using medium-temperature separators, and those using low-temperature separators. 2. According to the structure of the separator: there are four types – circulating fluidized bed boilers using cyclone separators, those using inertial separators, those using combined separation systems, and those using vortex combustion separators. 3. Classified by the presence or absence of an external heat exchanger: there are two types of circulating fluidized bed boilers – those with an external heat exchanger and those without one. 4. Classified by material circulation ratio: three types of circulating fluidized bed boilers – high circulation ratio (circulation ratio > 20), medium circulation ratio (circulation ratio 6–20), and low circulation ratio (circulation ratio 1–5). 5. Classified by application: circulating fluidized bed hot water boilers, circulating fluidized bed steam boilers, circulating fluidized bed power station boilers, etc