Compound desulfurizing process of circulating fluidized bed boiler

A technology of circulating fluidized bed and desulfurization process, which is applied in the direction of fluidized bed combustion equipment, chemical instruments and methods, fuel burned in a molten state, etc. It can solve the problems of desulfurization agent waste, desulfurization efficiency drop, and flying out of the furnace, etc., to achieve Realize the effect of economy, broad application prospect and guarantee of environmental protection

Inactive Publication Date: 2003-03-12
SHANDONG SHENHUA SHANDA ENERGY ENVIRONMENTAL
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the actual operation of circulating fluidized bed boilers, the combustion temperature is generally 900-1100 ° C, which exceeds the optimum temperature for combustion desulfurization of circulating fluidized bed boilers, resulting in a sign

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compound desulfurizing process of circulating fluidized bed boiler
  • Compound desulfurizing process of circulating fluidized bed boiler
  • Compound desulfurizing process of circulating fluidized bed boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Attached below figure 1 A preferred embodiment of the present invention is given.

[0018] Limestone particles with a particle size of less than 2mm are sent to the circulating fluidized bed boiler 3 by the limestone feeding device 2, and the CaO particles calcined and decomposed in the furnace undergo a gas-solid reaction with sulfur dioxide at the bed temperature in the furnace, and the larger particles of calcium oxide particles After being separated from the coal-fired particles by the high-temperature separator of the circulating fluidized bed boiler, they enter the bed for further reaction, remove part of the sulfur dioxide and complete the combustion desulfurization process in the bed. Calcium oxide particles with a particle size smaller than the cutting particle size of the high-temperature separator enter the humidification tower 6 through the tail flue 5 and the Venturi 13 with the flue gas, and a water atomization system 7 is arranged on the upper part of the...

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

PUM

No PUM Login to view more

Abstract

A combined desulfurizing process for removing the SO2 gas from the flue gas generated by circualting fluidized-bed boiler is characterized by that the raw lime stone reacts with the SO2 in the bed layer of boiler to remove part of SO2 by combustion and the unreacted and escaped calcium oxide further reacts with SO2 in the moistening tower for external removal of SO2. Its advantages are low cost and optimal desulfurizing effect.

Description

1. Technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a composite desulfurization process for a circulating fluidized bed boiler used for removing sulfur dioxide gas in flue gas generated after combustion of the circulating fluidized bed boiler. 2. Background technology [0002] At present, the desulfurization method of circulating fluidized bed boiler is mainly combustion desulfurization. The combustion desulfurization process of the circulating fluidized bed boiler is to send lime particles with a particle size of less than 2.0mm into the furnace, and the limestone is decomposed into calcium oxide and carbon dioxide. The calcium oxide reacts with the sulfur dioxide gas generated by combustion to achieve the purpose of desulfurization. [0003] In the combustion desulfurization process of circulating fluidized bed boilers, in addition to the influence of limestone particle size on desulfurization, th...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D53/50B01D53/83F23C10/02
Inventor 马春元董勇陈莲芳徐夕仁李京李玉忠田风国周广锋
Owner SHANDONG SHENHUA SHANDA ENERGY ENVIRONMENTAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap