A desulfurization method utilizing white clay

The technology of white mud and desulfurization agent is applied in the field of flue gas desulfurization, which can solve the problems of difficult maintenance and high requirements for operation control, and achieve the effects of improving dissociation efficiency, significant economic benefits, and good environmental and social benefits.
CN112973403AInactive Publication Date: 2021-06-18HUADIAN QUDONG POWER GENERATION CO LTD +1
10 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUADIAN QUDONG POWER GENERATION CO LTD
Publication Date
2021-06-18
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a desulfurization method utilizing white clay, which is characterized in that white clay is used as a desulfurizing agent to carry out double-tower desulfurization in two ways: both a pretreatment tower and an absorption tower adopt the white clay, or the pretreatment tower adopts the white clay to remove 20-30% of SO2, and the absorption tower continuously uses limestone to remove residual SO2; a plurality of monitoring indexes are applied to control in the white clay desulfurization process, and the monitoring content comprises the density of white clay slurry and the particle size of solid particles contained in the white clay slurry, the total dissolved solid mass concentration and density of the gypsum slurry. An existing double-tower main body structure is fully utilized, the desulfurization efficiency and the gypsum quality are guaranteed, meanwhile, zero emission of desulfurization waste water is achieved, and the operation cost is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of flue gas desulfurization, and in particular relates to a method for desulfurizing lime mud, which uses two sections to divide labor and step-by-step desulfurization. Background technique

[0002] With the country's emphasis on the environment and the increasingly stringent environmental protection policies, the pollutant discharge standards of thermal power plants are also getting higher and higher. In terms of desulfurization, the vast majority of power plants in my country use wet limestone-gypsum flue gas desulfurization, and some of them choose a technical solution for improving desulfurization efficiency by connecting two towers in series. At the same time, with the strengthening of ecological civilization construction, the application environment of the traditional desulfurizer limestone has changed greatly compared with the initial use. The continued large-scale application will not only increase t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More