CFB Boiler Desulfurization Process

2016-05-13

Desulfurization technology in circulating fluidized bed boiler is implemented using limestone dry desulfurization method, that is, the CaCO in boiler furnace through high temperature calcined breaks down into CaO, and reacts with SO in the flue gas, then generates the CaSO, which is discharged along with the slag, so as to achieve desulfurization purpose. CFB boiler desulfurization process can be mainly divided into three steps.

1. Limestone Calcination

For a circulating fluidized-bed boilers, CaCO in the limestone will break down into CaO after heated and calcination, when CO is precipitated, pores will occur and expand, increasing their surface area, and laying the foundations for the next step in sulfur reaction. Reaction equation is CaCO=CaO+CO

2. Precipitation and Oxidation of Sulfur

Sulfur in coal is generally existed with pyrite, organic salt, sulfate the three forms. Related tests show that, when coal is heating and burning, release of SO is in obvious stage. The pyrite after combustion and oxidation generates SO. The organic sulfur in 200 degree C decomposes and releases HS, sulfide, mercaptans, etc, these substances are oxidized and generated SO. Reaction equation is S+O=SO

3. Curing reaction of Sulfur

CaO reacts with precipitated SO to generate Sulfate. The reaction equation is CaO+SO+1/2O=CaSO

CFB boiler desulfurization technology can effectively reduce the sulfur emission, reduce the environment pollution and improve boiler’s social and economic benefits. Zhengzhou Boiler Co., Ltd. manufacture and offer excellent quality CFB boilers with high thermal efficiency up to 90%. Anyone needs the boiler for your projects, feel free to let us know, and we will provide custom-designed products for your needs!

CFB Boiler Desulfurization Process

Pre: How To Reduce Hot Water Boiler Exhaust Flue Gas Temperature Back to list Next: 2 Ton Oil Gas Steam Boiler Technical Parameters

Steam boiler for cattle feed plant cost

2026-07-31

XHJ boiler have rich experience in cattle feed factory steam boiler supply, many feed mill trust our brand. Pelleting for cattle feed plant is the most expensive process in terms of equipment costs.This cost center requires pellet mills,pellet coolers,graders,conveyors,steam boiler,and other miscellaneous equipment.

Steam Boiler Used in Paper Industry and Paper Mill

2026-07-30

Paper mill need stable and high-quality steam boiler to support whole production line. XHJ boiler has rich experience in paper industry supporting, very suitable for all kinds of paper mill production scenarios. Steam Boilers in paper mill are used for process, electrical power, and economic reasons (in the Kraft process, specifically).

Fire tube steam boiler Advantage Introduction

2026-07-27

XHJ Boiler factory will introduction fire tube steam boiler advantage. Fire tube boiler may be used in steam or hot water applications. A fire-tube steam boiler is a type of boiler in which hot gases from a fire pass through one or more tubes running through a sealed container of water. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam.

China Boilers Won Worldwide Good Review

2026-07-23

China’s boiler manufacturing technology has continued to advance, and product quality has steadily improved, earning recognition from an increasing number of customers in the international market. With a comprehensive industrial chain, mature manufacturing expertise