CN103933987A - Molten iron catalyst prepared from iron oxide scale for ammonia industrial synthesis - Google Patents
Molten iron catalyst prepared from iron oxide scale for ammonia industrial synthesis Download PDFInfo
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- CN103933987A CN103933987A CN201310018813.9A CN201310018813A CN103933987A CN 103933987 A CN103933987 A CN 103933987A CN 201310018813 A CN201310018813 A CN 201310018813A CN 103933987 A CN103933987 A CN 103933987A
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- China
- Prior art keywords
- catalyst
- iron
- iron oxide
- oxide scale
- industrial synthesis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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Abstract
The present invention relates to the field of environmental technologies, and specifically relates to a molten iron catalyst prepared from iron oxide scale for ammonia industrial synthesis. The catalyst comprises an iron oxide Fe3O4 as a main ingredient, potassium oxide and alumina as accelerators. The ratio of ferrous iron to ferric iron in the catalyst is controlled between 0.47 and 0.57, and the catalyst is prepared by a melting method. Preparing the molten iron catalyst by utilizing iron oxide scale for ammonia industrial synthesis opens up a new way for iron oxide scale application, maximizes the recycling rate of industrial waste and improves the comprehensive utilization of the iron oxide scale. The catalyst is conducive to sustainable development of industry in our country, and has practical importance for "unharming, reducing and resourcing" solid waste in our country.
Description
Technical field
Patent of the present invention relates to environmental technology field, is specifically related to the fused iron catalyst for industry synthetic ammonia prepared by a kind of iron scale.
Background technology
Synthetic ammonia is important industrial chemicals, is mainly used to produce chemical fertilizer, nitric acid etc., and ammonia synthesizing industry occupies critical role in national economy, and meanwhile synthetic ammonia is also the industry of a large-tonnage, high energy consumption, poor benefit.Thereby the research of catalyst will be to reducing energy consumption, the generation tremendous influence of increasing economic efficiency.
Iron scale is to forge and when hot rolling hot-working at steel, due to the reaction formation of oxygen in iron and steel and air.If to these resource rational utilizations, can reduce production costs, can play environmental protection and energy saving effect simultaneously.The main component of iron scale is Fe
2o
3, Fe
3o
4and FeO.
Prepare industry synthetic ammonia fused iron catalyst taking iron scale as raw material, opened up the new way of iron scale application, recycle to greatest extent trade waste, improve the level of comprehensive utilization of iron scale, be conducive to industrial sustainable development.
Summary of the invention
In order to solve iron scale disposal of resources problem, the invention provides a kind of fused iron catalyst of the industry synthetic ammonia of preparing taking iron scale as raw material.
The present invention utilizes iron scale to prepare industry synthetic ammonia fused iron catalyst, promoter is mixed with iron scale and iron powder, deliver to resistance furnace melting, control 1400 ~ 2000 DEG C of melt temperatures, when melting finishes, liquid melt is put into cooling bath, be cooled fast to below 100 DEG C, be further cooled to room temperature; Then through fragmentation, ball milling and sieving technology, its main chemical compositions of the catalyst finally making is Fe
3o
4, R=Fe
2+/ Fe
3+generally 0.47 ~ 0.57.Iron powder amount 10 ~ 20g, the consisting of of promoter: aluminium oxide 0.1 ~ 1.0g, potassium oxide 0.1 ~ 1.0 g.
Utilize iron scale to prepare industry synthetic ammonia fused iron catalyst, realize recycling treatment and the comprehensive utilization of steel and iron industry solid waste, effectively promoted the development of steel and iron industry recycling economy, realized solid waste " innoxious; minimizing, resource " for China and there is realistic meaning.
Detailed description of the invention
Embodiment mono-
By iron scale 100g, iron powder 10g, aluminium oxide 0.10g, after potassium oxide 0.10g mixes, packs melting in resistance furnace into, melt temperature is controlled at 1400 DEG C, when melting finishes, liquid melt is put into cooling bath, be cooled fast to below 100 DEG C, be further cooled to room temperature, cooling rear frit, through fragmentation, ball milling and screening, obtains catalyst prod.The catalyst ultimate constituent control of preparation is: R=Fe
2+/ Fe
3+=0.47.
Embodiment bis-
By iron scale 100g, iron powder 15g, aluminium oxide 0.5g, after potassium oxide 0.5g mixes, packs melting in resistance furnace into, melt temperature is controlled at 1800 DEG C, when melting finishes, liquid melt is put into cooling bath, be cooled fast to below 100 DEG C, be further cooled to room temperature, cooling rear frit, through fragmentation, ball milling and screening, obtains catalyst prod.The catalyst ultimate constituent control of preparation is: R=Fe
2+/ Fe
3+=0.51.
Embodiment tri-
By iron scale 100g, iron powder 20g, aluminium oxide 1.0g, after potassium oxide 1.0g mixes, packs melting in resistance furnace into, melt temperature is controlled at 2000 DEG C, when melting finishes, liquid melt is put into cooling bath, be cooled fast to below 100 DEG C, be further cooled to room temperature, cooling rear frit, through fragmentation, ball milling and screening, obtains catalyst prod.The catalyst ultimate constituent control of preparation is: R=Fe
2+/ Fe
3+=0.57.
Claims (2)
1. the fused iron catalyst for industry synthetic ammonia that prepared by iron scale, is characterized in that, the main chemical compositions of this catalyst is Fe
3o
4, R=Fe
2+/ Fe
3+generally 0.47 ~ 0.57.
2. fused iron catalyst claimed in claim 1, is characterized in that, it is raw material that described catalyst adopts trade waste iron scale, and adds promoter preparation and obtain, and promoter can be aluminium oxide and potassium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310018813.9A CN103933987A (en) | 2013-01-18 | 2013-01-18 | Molten iron catalyst prepared from iron oxide scale for ammonia industrial synthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310018813.9A CN103933987A (en) | 2013-01-18 | 2013-01-18 | Molten iron catalyst prepared from iron oxide scale for ammonia industrial synthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103933987A true CN103933987A (en) | 2014-07-23 |
Family
ID=51182018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310018813.9A Pending CN103933987A (en) | 2013-01-18 | 2013-01-18 | Molten iron catalyst prepared from iron oxide scale for ammonia industrial synthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103933987A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4975407A (en) * | 1988-04-29 | 1990-12-04 | Shell Oil Company | Catalyst for dehydrogenating organic compounds, a process for its preparation and its use |
| CN1072871A (en) * | 1991-12-06 | 1993-06-09 | 浙江工学院 | The method of preparing catalyst for ammonia synthesis by laser fusion |
-
2013
- 2013-01-18 CN CN201310018813.9A patent/CN103933987A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4975407A (en) * | 1988-04-29 | 1990-12-04 | Shell Oil Company | Catalyst for dehydrogenating organic compounds, a process for its preparation and its use |
| CN1072871A (en) * | 1991-12-06 | 1993-06-09 | 浙江工学院 | The method of preparing catalyst for ammonia synthesis by laser fusion |
Non-Patent Citations (2)
| Title |
|---|
| 刘化章: "合成氨催化剂研究的新进展", 《催化学报》 * |
| 郑遗凡: "熔铁催化剂还原过程的原位XRD研究及活性相的形成机理", 《高等学校化学学报》 * |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140723 |