Technique for decarbonizing fly ash with high ignition loss

A fly ash, loss on ignition technology, applied in solid separation, flotation, etc., can solve the problems of large fly ash loss on ignition, high carbon content in fly ash, no use value, etc., and achieve large processing capacity , high output and high flotation efficiency

Inactive Publication Date: 2008-10-15
贵州安顺惠海粉煤灰开发有限公司
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Good fly ash has a wide range of uses, but due to the influence of coal types and insufficient boiler combustion, etc., the loss on ignition of fly ash is often too large (exceeding the standard). In l

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
  • Technique for decarbonizing fly ash with high ignition loss
  • Technique for decarbonizing fly ash with high ignition loss
  • Technique for decarbonizing fly ash with high ignition loss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0075] Referring to Fig. 1, the process of the present invention is as follows: the original ash of fly ash is transported to the ash storage tank of the treatment plant by a bulk tanker, the output of the ash storage tank is measured by an electronic weighing scale, and then enters a box-type ash flusher, and enters through a powerful mixer. In the pulp preprocessor, the electronic measuring scale is the existing technology, which is available in the market and has various varieties. The box-type ash flusher is the existing technology, such as the XBL1 600-6M box-type ash flusher manufactured by Zhejiang Changxing Zhongke Machinery Factory , strong mixer is also prior art, as the JP-2500 type fly ash special mixing tank produced by Wuxi Shenquan Machinery Co., Ltd. After the raw ash enters the pulp preprocessor, the automatic dosing machine will add the dispersant and compound flotation agent to the pulp preprocessor for mixing and stirring. After separation, the carbon parti...

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

The invention relates to a decarbonization technology of coal fly ash with over-standard loss on ignition, original ash of the coal fly ash is sent to an ash storage tank of a treatment plant by a bulk tank car and sent to an ore pulp pre-processor after the measurement, an automatic dosing machine also adds a dispersant and a compound flotation agent into the ore pulp pre-processor for carrying out mixing and stirring, the output of the ore pulp pre-processor after the treatment enters a coal ash special flotation column, carbon particles are separated from the fly ash by the floatation, the carbon particles and the fly ash which are respectively collected are respectively concentrated by a concentrator, filtered by a filter and dehydrated, thus becoming fine coal powder and the coal flay ash with the low loss on ignition. The decarbonization technology can fully utilize the coal fly ash stacked by a power plant, thus generating substantial economic benefits; the coal fly ash during the operation can achieve the zero emission, which can protect environment, increase efficiency and save investment.

Description

Technical field: [0001] The invention relates to a material treatment process, in particular to a decarbonization process of fly ash whose loss on ignition exceeds the standard. Background technique: [0002] In coal-fired boilers in thermal power plants, coal is burned to produce flue gas, which contains a large amount of soot. After the flue gas passes through the electrostatic precipitator, the gas and dust in it are separated, and the separated dust is fly ash. In the past, thermal power plants had to spend a lot of money on land acquisition and stacking of fly ash, and they had to pay a lot of transportation costs to transport the fly ash from electrostatic precipitator to the storage yard. In addition, fly ash contains a small amount of harmful substances such as sulfur and phosphorus, which cause great harm to the environment of the storage yard. It has always been a big problem encountered by countries in the world in the process of economic development. [0003] Si...

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): B03D1/00B03D1/14
Inventor 沈宗库管国华高润秋
Owner 贵州安顺惠海粉煤灰开发有限公司
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