Blast furnace injection coupling method for coking surplus gas based on microwave heating

A microwave heating and gas technology, applied in the field of coking process, can solve the problems of polluting the environment, producing waste water or waste residue, etc., and achieve the effects of reducing the coke ratio of blast furnace, reducing CO2 emission, and increasing the output of coking.

Pending Publication Date: 2022-02-18
BAOSHAN IRON & STEEL CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It takes about 20 hours to refine a furnace of coke with the existing technology. In the coke production process, coke oven gas and blast furnace gas are used for heating. Coke oven gas and blast furnace gas will produce a large amount of CO during the combusti

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
  • Blast furnace injection coupling method for coking surplus gas based on microwave heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] From the production plant, the particle size is less than 6mm, the ash content is A d Content is 7%, volatile matter V d The blended coal with a content of 29% is added to the crusher for crushing. After crushing, the proportion of blended coal with a particle size less than 3mm is 80%. Add 6% water to the crushed blended coal, and mix the blended coal with good moisture Put it into a microwave heating furnace container and heat it with microwaves. The heating system used in this example is: heating from room temperature to 1040°C for a heating time of 10 hours. In the process of coking, a large amount of gas is produced through tar capture and treatment. The tar capture adopts the existing technology of gas tar treatment equipment and its treatment process, which will not be repeated here. Part of the gas is pressurized to 360kPa by the compressor and sprayed directly through the nozzle. Into the blast furnace, the amount of gas injected is 150m 3 / tFe, compared with...

Embodiment 2

[0043] From the production plant, the particle size is less than 6mm, the ash content is A d Content is 9%, volatile matter V dThe blended coal with a content of 27% is added to the crusher for crushing. After crushing, the proportion of the blended coal with a particle size less than 3mm is 79%. Add 5% water to the crushed blended coal, and mix the blended coal with good moisture Put it into a microwave heating furnace container and heat it with microwaves. The heating system used in this example is: heating from room temperature to 1040°C for a heating time of 9 hours. In the process of coking, a large amount of gas is produced through tar capture and treatment. The tar capture adopts the existing technology of gas tar treatment equipment and its treatment process, which will not be repeated here. Part of the gas is pressurized to 350kPa by the compressor and sprayed directly through the nozzle. Into the blast furnace, the amount of gas injected is 130m 3 / tFe, compared wi...

Embodiment 3

[0045] From the production plant, the particle size is less than 6mm, the ash content is A d Content is 11%, volatile matter V d The blended coal with a content of 26% is added to the crusher for crushing. After crushing, the proportion of the blended coal with a particle size less than 3mm is 77%. Add 4% water to the crushed blended coal, and mix the blended coal with good moisture Put it into a microwave heating furnace container and heat it with microwaves. The heating system used in this example is: heating from room temperature to 1040°C, the heating time is 8h, and when the center temperature of the coke cake reaches 1040°C, keep the temperature for 1h. In the process of coking, a large amount of gas is produced through tar capture and treatment. The tar capture adopts the existing technology of gas tar treatment equipment and its treatment process, which will not be repeated here. Part of the gas is pressurized to 355kPa by the compressor and sprayed directly through th...

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 discloses a blast furnace injection coupling method for coking surplus gas based on microwave heating. The blast furnace injection coupling method comprises the following steps: 1, crushing blended coal; 2, adjusting the moisture of the crushed blended coal; 3, carrying out microwave heating coking on the blended coal having been subjected to moisture adjustment, and collecting coal gas generated in a coking process; 4, after the coal gas is subjected to tar capture treatment, pressurizing a part of the coal gas, spraying the pressurized coal gas into a blast furnace, allowing the coke ratio of blast furnace production to be reduced by 4-6%, and enabling the rest of the coal gas to enter a coal gas cabinet to be stored; and 5, after coking is completed, discharging coke from the furnace, cooling the coke, and subjecting the coke to application after quality inspection, wherein the CRI of the coke is 23-26%, and the CSR of the coke is 66-68%. According to the method, the surplus coal gas generated by microwave heating coking is used for blast furnace injection, so the coke ratio of the blast furnace can be effectively reduced, good economic benefits are achieved,carbon emission of the blast furnace is reduced, and good environmental benefits are achieved.

Description

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

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
Owner BAOSHAN IRON & STEEL CO LTD
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.

© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap