Biomass iron-containing agglomerate for producing combustible gas and DRI and preparation method thereof
A biomass and agglomerate technology, applied in fluidized bed furnaces and other directions, can solve the problems of incomplete tar cracking, environmental pollution, waste of biomass energy, etc., to strengthen the ion offset effect, reduce tar content, and promote catalytic cracking. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] A kind of biomass iron-containing agglomerate used for producing combustible gas and DRI of the present invention includes iron-containing raw materials, biomass, additives and binding agent; described iron-containing raw materials, biomass, additives and binding agent according to The composition is as follows in parts by mass: 50-60 parts of biomass; 100-200 parts of iron-containing raw materials; 5-10 parts of additives; 3-5 parts of binder.
[0035] The method for producing direct reduced iron (DRI) by gasification of the present invention, concrete steps are as follows:
[0036] (1) A preparation method for biomass iron-containing agglomerates used to produce combustible gas and DRI, the specific steps are: mixing iron-containing raw materials, biomass, additives and binders, passing through a briquetting machine at 80-120 The iron-containing agglomerate is prepared by hot pressing at ℃, the pressure of the iron-containing agglomerate is 20MPa, and then the agglome...
Embodiment 2
[0065] The basic content of the present embodiment is the same as that of Example 1, except that the additive is composed of sodium carbonate, laterite nickel ore, dolomite, plant ash and chromium slag; the mass percent of each component is: sodium carbonate: 15%, Laterite nickel ore: 30%, dolomite: 30%, plant ash: 15%, chromium slag: 10%. Described chromium slag chemical composition mass percent is as follows: SiO 2 : 28%, Al 2 o 3 : 8%, CaO: 30%, MgO: 15%, Fe 2 o 3 : 10%, Cr 2 o 6 : 0.8% and Na 2 Cr 2 o 7: 1%, the rest are impurities. The metallization rate of direct reduced iron (DRI), the yield of biomass gasification, and the yield of tar were detected after the reaction. The experimental results are recorded in Table 1. On the one hand, the chromium slag can effectively reduce the chromium slag under the high reducing condition of biomass gasification to generate low-priced chromium oxides. The combination of chromium oxides with iron oxides and calcium-magnes...
Embodiment 3
[0067] The iron ore concentrate is composed of Hayangdi, Tubalang powder, Canadian fine powder, Harun powder and Jinbuba powder. The composition of the ore is shown in Table 2. The mass percentage of various mineral powders is: Hayangdi: 10 %, Tubalang powder: 20%, Canadian fine powder: 40%, Harbin powder: 15%, Jinbuba powder: 15%. The metallization rate of direct reduced iron (DRI), biomass gasification yield, and tar yield were detected after the reaction. The experimental results are recorded in Table 1.
[0068] Table 2 Mineral powder composition (wt / %)
[0069]
[0070] The metallization rate of DRI is further improved. Through repeated discussions, the inventor believes that this process may be caused by the thermal decomposition of the crystal water in the iron ore powder during the heat preservation process at 900°C, and more voids are generated in the iron-containing agglomerates. , thereby increasing the gas-solid reaction interface for the reduction of iron oxid...
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
Ash content | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com