Limestone Flue Gas Desulfurization system

The professional manufacture of crushing and grinding desulfurization process,It is imperative to carry on fuel gas desulfurization process

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Coal combustion will discharge large of SO2, NOx and CO2, which cause the Atmospheric environment pollution and Acid rain more and more serious. It is imperative to strengthen control So2 discharge of thermal power enterprises. At present, the main desulfurization process for coal-fired power plant is flue gas desulfurization.

The chemical principle of limestone as desulfurizer

During pulverized coal combustion, blending a certain proportion of limestone powder, it can reach the desulfurization effect after a series of chemical reactions.

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Note: we completed a process of lime stone powder making, provide limestone powder desulfurization preparation technology and required equipments.

The process of desulfurization limestone powder preparation

The completed process required equipment includes vibrating feeder, jaw crusher, mill, bucket elevator, belt conveyor, bunker adjustment and control cabinet, etc. And the main unit of grinding equipments are provided by our company Vertical Roller Mill or continental mill.

The bulk material is firstly sent to the jaw crusher and crushed into desired granularity. And material fed into main unit by bucket elevator and the vibrating feeder, are pulverized by main unit. The generate powders, which rise with airflow of fan, are grades by powder concentrator. Powders conforming to fineness requirement enter into whirlwind powder collector with airflow via dust.
The whole system running under the negative pressure condition, no dust generates, so as to ensure the cleaning.

The advantages of limestone powder preparation

The traditional mechanism for lime stone powder, has the disadvantages of large energy consumption, low production, process complex, fineness and grain size distribution difficult to control. Zenith mill experts after many years development, launch the overpressure trapezium mill, continental trapezium mill, vertical roller mill, brings a new revolution in the field of limestone powder preparation.

  • high degree of automation

    Using limestone powder as desulfurizer of limestone - gypsum wet desulphurization process.

  • low energy consumption

    Using limestone powder as desulfurizer of limestone - gypsum wet desulphurization process.

  • little maintenance

    Using limestone powder as desulfurizer of limestone - gypsum wet desulphurization process.

  • Low noise, little dust

    Using limestone powder as desulfurizer of limestone - gypsum wet desulphurization process.

  • high efficiency of desulfurization

    Using limestone powder as desulfurizer of limestone - gypsum wet desulphurization process.

  • high yield

    Using limestone powder as desulfurizer of limestone - gypsum wet desulphurization process.

About gypsum wet desulphurization process

lime stone powder by solid - liquid two phase of dissolving reaction, the reaction rate is proportional to the limestone particle specific surface area. The smaller limestone powder particle size is, the greater the specific surface area, the better the performance of dissolubility of limestone particles, the higher the related reaction rate. The fineness of limestone powder is about 325mesh, D95. In order to ensure the desulphurization efficiency and utilization rate of limestone, it should be grinded more fine when the content of impurities in limestone is high.

Instance site

Limestone desulfurization case 1

Mill / 5 sets of MTW175, the whole unit rated power 390kw

Capacity / 70t/h

Raw material and fineness / limestone, 325mesh, D95

Running instance

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Customer evaluation

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Experts analysis

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Mill / 1 set of MTM160, the whole unit rated powder 282.5kw

Capacity / 11t/h

Raw material and fineness / limestone, 250mesh,D95

Running instance

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Customer evaluation

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Experts analysis

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Limestone desulfurization case 2

Limestone desulfurization case 3

Mill / 3 sets of LM240K Vertical Roller Mill,rated power 900kw

Capacity / 320t/h

Raw material and fineness / limestone 200 mesh, D80

Running instance

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Customer evaluation

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.

Experts analysis

A thermal power plant using limestone - gypsum wet desulphurization process (FGD), add water in limestone powder to be limestone slurry as the absorbent.