Unlock instant, AI-driven research and patent intelligence for your innovation.

Novel method and system for fluidized bed smelting of reducing gas prepared by medium/low-rank coal gasification

A fluidized bed and gasification reactor technology, applied in the metallurgical field, can solve the problems of environmental pollution, waste, unreasonable utilization of symbiotic elements, etc., so as to reduce the dust content, reduce the preparation cost, and save the capital construction investment and operation. cost effect

Active Publication Date: 2014-03-26
SHENWU TECH GRP CO LTD
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of existing blast furnace technology to "forcibly" smelt composite ore has resulted in a large number of symbiotic elements being wasted without rational use, and even environmental pollution. For example, about 4 billion tons of high-grade medium-high phosphorus iron ore in my country have not been utilized.

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
  • Novel method and system for fluidized bed smelting of reducing gas prepared by medium/low-rank coal gasification
  • Novel method and system for fluidized bed smelting of reducing gas prepared by medium/low-rank coal gasification
  • Novel method and system for fluidized bed smelting of reducing gas prepared by medium/low-rank coal gasification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0078] Such as Figure 4 As shown, 1. Gasification reactor; 2. Primary cyclone separator of gasification reactor; 3. Secondary cyclone separator of gasification reactor; 4. Fluidized bed reduction reactor; 5. Primary reduction exhaust gas Cyclone separator; 6. Secondary reducing exhaust gas cyclone separator; 7. Heat exchanger; 8. Scrubber; 9. Gas-liquid separator; 10. Compressor; 11. Desulfurization and decarbonization device; 12. Heating furnace.

[0079] The processing capacity of laterite nickel ore is 80×10 4 The production scale of t / h is taken as an example. The lignite coal powder enters the fluidized bed gasification reactor 1 and undergoes gasification reaction with the gasification medium of water vapor and oxygen at 900 degrees Celsius and 1.0 MPa pressure. The primary gasification reactor cyclone separator 2 and the secondary gasification reactor cyclone separator 3 remove fly ash, and then the clean reducing gas is mixed with the reduced exhaust gas from the heati...

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 provides an ore powder reduction method and system. The ore powder reduction method comprises the following steps: reacting coal, vapor and oxygen in a gasification reactor to obtain a reducing gas containing carbon monoxide and hydrogen; reacting the reducing gas and ore powder in a fluidized bed reduction reactor to obtain a reduction product and a reduction exhaust; carrying out desulfurization and decarburization on the reduction exhaust to obtain a purified reduction exhaust; and introducing the purified reduction exhaust into the fluidized bed reduction reactor. The method can effectively reduce the ore powder, thereby saving the cost and obviously enhancing the reduction efficiency of the ore powder.

Description

technical field [0001] The invention relates to the field of metallurgy. Specifically, it relates to a new method and system for preparing reducing gas fluidized bed smelting by gasification of middle and low rank coal. Background technique [0002] my country is rich in low-quality mineral reserves. The proven resource reserves of iron ore in the country are 61.335 billion tons, of which the basic reserves are 22.364 billion tons and the resources are 38.971 billion tons. The proven resource reserves of iron ore are 1.002 billion tons, accounting for 1.6% of the total iron ore proven resource reserves. On the other hand, my country's iron ore reserves with associated (sym)biotic beneficial components account for about 1 / 3 of the country's reserves. The associated (symbiotic) beneficial components include: vanadium, titanium, tungsten, molybdenum, cobalt, antimony, More than 30 rare and precious metals such as gold, cadmium, gallium, uranium, and thorium. This is the main f...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/00
CPCY02P10/143
Inventor 吴道洪王其成
Owner SHENWU TECH GRP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com