cfb biomass boiler zozen, how to increase the availability rate of cfb biomass boiler zozen

The cfb biomass boiler zozen adopts the clean coal combustion technology with a high degree of industrialization. The cfb biomass boiler zozen adopts the fluidized combustion. Its main structure includes the combustor (dense phase zone and dilute phase zone) and the circulation loop (high temperature cyclone separator and return system). Different from the bubbling fluidized bed combustion technology, it strengthens the heterogeneous reaction processes such as combustion and desulfurization. The boiler capacity can be enlarged to the large capacity accepted by the electricity industry (600MW or above). What's more, the cfb biomass boiler zozen has well solved the basic problems on thermology, mechanics and materials science as well as engineering problems such as expansion, wearing and overtemperature. It has become the advanced technology for energy utilization of non-flammable solid fuels such as coal gangue, oil shale, municipal refuse, sludge and other wastes.

ZOZEN SHX series cfb boiler

1. The advantages of cfb biomass boiler zozen

1) Wide range of available fuels

A large amount of high-temperature bed fuel in the furnace, high efficiency of combustion inside and outside the furnace

2) High combustion efficiency

High combustion rate, long staying time

3) Good desulfurization effect

Appropriate desulfurization temperature, long staying time

4) Low NOx emission

Staged combustion, low-temperature combustion

5) High heat load on the interface of the furnace

High gas speed in the furnace, strong mixture in the furnace and quick heat transfer

6) Wide range of boiler output regulation and quick regulation

Regulation of coal feed quantity and fluidized speed, change the circulation quantity entering the outside heat exchanger

2. How to increase the availability rate of cfb biomass boiler zozen

1) Add the economizer to the cfb biomass boiler zozen

The economizer of the condensing gas-fired boiler can be directly added in the flue gas duct of the existing cfb biomass boiler zozen to recycle the energy contained in the high-temperature flue gas in order to reduce the fuel consumption and improve the economic benefits. At the same time, it can also absorb the pollutants such as NOx and SO₂ in the flue gas to reduce the pollutant emissions, which is of great environmental protection significance.

2) The cfb biomass boiler zozen can adopt the waste heat recovery technology

For traditional boilers, the exhaust gas temperature is generally 160-250℃. The water vapor in the flue gas is still in the superheated condition, so it can not be condensed to be liquid water and release the potential heat via vaporization. As we all know, the boiler thermal efficiency is calculated based on the low calorific value of the fuel without considering the vaporized potential heat loss of the high calorific value of the fuel. Therefore, the thermal efficiency of traditional boiler only can reach 87-91%. The waste heat recovery technology can lower the exhaust gas temperature to 50-70℃ by sufficiently absorbing the sensible heat in the flue gas and the potential heat from the condensed water vapor in order to improve the thermal efficiency of cfb biomass boiler zozen.