Multi-product cleaning and producing method with coal gangue comprehensive utilization

A clean production, coal gangue technology, applied in steam generation method, combustion method, cement production and other directions, can solve the problems of wall cracking, high drying shrinkage rate, can not meet the wall insulation requirements, etc., to avoid secondary volatilization, Achieving zero emissions

Active Publication Date: 2012-10-03
WUHAN BUILDING MATERIAL IND DESIGN & RES INST
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the existing wall material products, the more prominent problems are that the product has poor thermal insulation performance and cannot meet the current building wall thermal insulation requir...

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
  • Multi-product cleaning and producing method with coal gangue comprehensive utilization
  • Multi-product cleaning and producing method with coal gangue comprehensive utilization
  • Multi-product cleaning and producing method with coal gangue comprehensive utilization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1: Raw material: adopt the raw meal that certain factory prepares. Its raw material rate value is:

[0060] Lime saturation coefficient KH=0.872, silica ratio SM=2.41, alumina ratio AM=1.76

[0061] See Table 1 for the calorific value, ratio and coal consumption of the blended fuel.

[0062] Table 1: Fuel Consumption

[0063]

[0064] The heat consumption of cement firing in Example 1 is based on the existing lower heat consumption value, the thermal model does not include clinker firing, and the actual firing heat supply is based on the temperature of the flue gas entering the kiln series calciner; the mixed fuel The calorific value brought in is brought in by the flue gas, and the composition of unburned matter in the flue gas is based on the CO content of the flue gas entering the furnace.

[0065] The experimental results are:

[0066] The flue gas temperature of the calciner entering the kiln series is 1050°C, and the flue gas temperature of the w...

Embodiment 2

[0070] Example 2: The experimental source and fuel conditions are the same as in Example 1, only the CO content of the flue gas entering the furnace is controlled, and the proportion of unburned substances carried by the flue gas is appropriately increased.

[0071] The experimental results are:

[0072] The flue gas temperature of the calciner entering the kiln series is 1045°C, and the flue gas temperature of the waste heat boiler entering the kiln series is 921°C.

[0073] The flue gas temperature of the calciner entering the furnace series is 911°C, the CO content of the flue gas entering the furnace is 6.37%, the flue gas temperature of the waste heat boiler entering the furnace series is 583°C, and the raw material decomposition rate of the exiting device is 95.5%.

[0074] The two sets of waste heat boilers can generate 393.8 KW.h / t. clinker, the circulating fluidized bed boiler can generate 336.7 KW.h / t. clinker, and the total power generation is 630.5 KW.h / t. clinker ...

Embodiment 3

[0075] Embodiment 3: The raw material conditions are the same. In this experiment, the high-quality coal consumption of cement firing was reduced, so that the heat consumption of cement firing was lower than the existing firing heat consumption value, and the proportion of mixed fuel was increased at the same time.

[0076] See Table 2 for the calorific value, ratio and coal consumption of the blended fuel.

[0077] Table 2 Fuel consumption

[0078]

[0079] The experimental results are:

[0080] The flue gas temperature of the calciner entering the kiln series is 1045°C, and the flue gas temperature of the waste heat boiler entering the kiln series is 779°C.

[0081] The flue gas temperature of the calciner entering the furnace series is 795°C, the CO content of the flue gas entering the furnace is 5.22%, the flue gas temperature of the waste heat boiler entering the furnace series is 609°C, and the raw material decomposition rate of the exiting device is 91.3%.

[0082...

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 multi-product cleaning and producing method comprehensive utilization; coal carbon production, power generation by burning coal gangue, cement production, power generation by cement afterheat and wall material production technology are combined in a same industrial symbiont by using industrial symbiosis; optimal configuration between working procedures is realized; processing procedures of raw materials are converted into processing working procedures capable of separating raw materialsand fuels into different material flows and power flows which have different transport directions; mutually beneficial relationship is established between working procedures; a predetermined downstream working procedure is directly capable of digesting ''pollutant'' of an upstream working procedure; each working procedure utilizes different raw material component and different gradient energy source so as to produce multiple products; so that energy and matter flow in a multi-channel manner; and a little-pollution multi-prduct cleaning and producing technology is formed.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical industry and energy, and relates to a multi-product clean production method for comprehensive utilization of coal gangue. Background technique [0002] Coal gangue is solid waste generated during coal production and processing, and is one of the largest industrial solid wastes in China. The long-term storage of waste coal gangue not only occupies a large amount of land and wastes resources, but also spontaneous combustion of coal gangue will produce SO 2 , NO X , form acid rain, pollute the atmosphere and groundwater quality, and pollute the environment. [0003] Coal gangue power generation is a main way of coal gangue utilization. Coal gangue power generation generally uses circulating fluidized bed boilers to calcinate coal gangue, and its desulfurization uses granular limestone in the furnace. The limestone circulates with materials in the bed, decomposes and absorbs SO 2 , and ...

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): C10L5/48C10L9/00F23K1/00F22B1/00F27D17/00F23L15/00C04B7/43C04B7/14
CPCY02E50/30Y02E20/34Y02P10/25Y02P40/10Y02P40/121Y02P40/125
Inventor 刘志惇姚元君邓胜天
Owner WUHAN BUILDING MATERIAL IND DESIGN & RES INST
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