1 General provisions
1.0.1 This standard is formulated in order to standardize the design of limestone/ gypsum wet flue gas desulfurization system of fossil fired power plant to meet the requirements for safety, reliability, advanced technology, economy, and rationality.
1.0.2 This standard is applicable to the design of limestone/ gypsum wet flue gas desulfurization system of fossil fired power plant.
1.0.3 In addition to this standard, the design of limestone/ gypsum wet flue gas desulfurization system of fossil fired power plant shall also meet the requirements of current relevant national standards.
2 Terms
2.0.1 desulfurization absorber
reaction device for removing sulfur dioxide and other harmful substances in desulfurization process
2.0.2 desulfurization efficiency
the percentage of sulfur dioxide removed by the desulfurization device to the sulfur dioxide contained in flue gas before desulfurization, which shall be calculated with the following formula:
(2.0.2)
where,
—— the desulfurization efficiency of desulfurization equipment, %;
C1—— the converted concentration of sulfur dioxide in flue gas before desulfurization (dry basis, 6% oxygen content), mg/Nm3;
C2—— the converted concentration of sulfur dioxide in flue gas after desulfurization (dry basis, 6% oxygen content), mg/Nm3.
2.0.3 absorbent
reagent used in desulfurization process to absorb sulfur dioxide and other harmful substances in flue gas. The absorbent for limestone/ gypsum wet flue gas desulfurization process is limestone slurry
2.0.4 by-products
1 General provisions
2 Terms
3 Basic requirements
4 Absorbent preparation and supply system
4.1 General requirements
4.2 Limestone unloading system
4.3 Limestone storage
4.4 Wet mill limestone slurry preparation system
4.5 Limestone pulverizing system
4.6 Limestone powder blending system
4.7 Limestone slurry supply system
5 Flue gas system
6 Sulfur dioxide absorption system
6.1 Desulfurization absorber
6.2 Circulation slurry spray sytem
6.3 Oxidation air system
6.4 Mist eliminator
6.5 Absorber sump agitation system
7 Byproducts treating system
7.1 General requirements
7.2 Hydraulic cyclone separation system
7.3 Vacuum belt dewatering system
7.4 In-plant gypsum storage and transport
8 Flue gas desulfurization process water system
9 Slurry discharge and return system
10 Slurry pipe and accessory, valve
11 Design requirement of arrangement
12 Design requirement of anticorrosion
13 Design requirement for relevant specialties
Explanation of wording in this standard
List of quoted standards
