CN1821095A - Process for producing carbonyl iron - Google Patents
Process for producing carbonyl iron Download PDFInfo
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- CN1821095A CN1821095A CN 200610065022 CN200610065022A CN1821095A CN 1821095 A CN1821095 A CN 1821095A CN 200610065022 CN200610065022 CN 200610065022 CN 200610065022 A CN200610065022 A CN 200610065022A CN 1821095 A CN1821095 A CN 1821095A
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- iron carbonyl
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Abstract
The present invention is process of producing carbonyl iron. Pig iron and CO as material are reacted at pressure of 15-25MPa and temperature of 100-250deg.c to produce gaseous carbonyl iron; and gaseous carbonyl iron is then condensed to obtain the liquid carbonyl iron product. The present invention prepares liquid carbonyl iron through the carbonyl process, and the production process has high safety, short process, simple operation, no 'three-waste' exhaust and high metal recovering rate and is suitable for industrial production.
Description
Technical field
The present invention relates to a kind of production method of iron carbonyl.
Background technology
The iron carbonyl molecular formula is Fe (CO)
5, be a kind of heavy-gravity yellow liquid, 102.8 ℃ of boiling points, fusing point-21 ℃.Iron carbonyl liquid is applied to fields such as catalyzer, additive, softening agent, and special purposes is arranged.The iron carbonyl thermolysis can make straight iron powder later, and this kind iron powder is widely used in fields such as chemical metallurgy, special material, functional materials and catalyzer, Wimet with its special chemical purity and physicochemical property.
Iron carbonyl character is special, of many uses, chamber preparation or utilize the carbonylation metallurgy principle by experiment, make CO gas and Fe that the preparation of selectivity oxonation take place, but because iron carbonyl is a kind of severe toxicity, inflammable, explosive material, its poor chemical stability, chance light, heat are easily decomposed, and it is bigger that large-scale industrial production prepares difficulty.The iron carbonyl production technique of seek a kind of safety, technical process is short, metal recovery rate is high, no industrial " three wastes " produce is very important.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, the iron carbonyl production method of provide a kind of safety, technical process is short, metal recovery rate is high, no industrial " three wastes " produce.
To achieve these goals, the present invention by the following technical solutions.
A kind of production method of iron carbonyl, it is characterized in that this method is that the pig iron is put into synthesis reactor as raw material, 100～250 ℃ of control synthesis reactor internal temperatures, pressure 15～25MPa, feed CO gas to synthesis reactor, the Fe element begins to generate the gaseous state iron carbonyl with the CO reaction in the raw material, iron carbonyl and CO are drawn synthesis reactor with gaseous form, under less than 40 ℃ environment it is carried out condensation, iron carbonyl changes liquid state into after the condensation.
Method of the present invention is characterized in that iron carbonyl liquid and CO gas are carried out three grades of step-downs to be separated, and after pressure dropped to normal pressure, dissolved CO gas all discharged in the liquid, obtains the iron carbonyl liquid product.
Method of the present invention is utilized the carbonylation metallurgy principle, and as raw material, the control certain process conditions makes raw material generation oxonation, prepares iron carbonyl liquid with CO gas and Fe alloy.This method has safety, flow process is short, simple to operate, nothing " three wastes " is discharged, metal recovery rate is high and the advantage of realization suitability for industrialized production.
Embodiment
A kind of production method of iron carbonyl, the pig iron is put into synthesis reactor as raw material, 100～250 ℃ of control synthesis reactor internal temperatures, pressure 15～25MPa, feed CO gas to synthesis reactor, the Fe element begins to generate the gaseous state iron carbonyl with the CO reaction in the raw material, iron carbonyl and CO are drawn synthesis reactor with gaseous form, under less than 40 ℃ environment it is carried out condensation, iron carbonyl changes liquid state into after the condensation.Iron carbonyl liquid and CO gas are carried out three grades of step-downs separate, after pressure dropped to normal pressure, dissolved CO gas all discharged in the liquid, obtains the iron carbonyl liquid product.
Below in conjunction with example this technology is further specified.
Embodiment 1
Pig iron 1000Kg is added in the synthesis reaction vessel, 105 ℃ of control synthesis reaction vessel temperature, pressure 23.5Mpa, feeding flow to synthesis reaction vessel is the CO gas of 5000L/h, CO content 〉=70% in this CO gas, O
2＜0.4%.After the reaction beginning, the carbonyl compound gas of drawing is fed a condenser, 25 ℃ of control condensing temperatures, obtain 2302L iron carbonyl liquid, iron carbonyl liquid and CO gas are passed through three grades of separators, pressure is respectively 23.5MPa, 10MPa, and normal pressure, dissolved CO gas all discharges in the liquid, obtains the iron carbonyl product.
Embodiment 2
Pig iron 1000Kg is added in the synthesis reaction vessel, 155 ℃ of control synthesis reaction vessel temperature, pressure 17.5Mpa, feeding flow to synthesis reaction vessel is the CO gas of 5000L/h, CO content 〉=70% in this CO gas, O
2＜0.4%.After the reaction beginning, the carbonyl compound gas of drawing is fed a condenser, 25 ℃ of control condensing temperatures, obtain 2313L iron carbonyl liquid, iron carbonyl liquid and CO gas are passed through three grades of separators, pressure is respectively 17.5MPa, 10MPa, and normal pressure, dissolved CO gas all discharges in the liquid, obtains the iron carbonyl product.
Embodiment 3
Pig iron 1000Kg is added in the synthesis reaction vessel, 215 ℃ of control synthesis reaction vessel temperature, pressure 12.5Mpa, feeding flow to synthesis reaction vessel is the CO gas of 5000L/h, CO content 〉=70% in this CO gas, O
2＜0.4%.After the reaction beginning, the carbonyl compound gas of drawing is fed a condenser, 25 ℃ of control condensing temperatures, obtain 2309L iron carbonyl liquid, iron carbonyl liquid and CO gas are passed through three grades of separators, pressure is respectively 12.5MPa, 5MPa, and normal pressure, dissolved CO gas all discharges in the liquid, obtains the iron carbonyl product.
Embodiment 4
Pig iron 1000Kg is added in the synthesis reaction vessel, 250 ℃ of control synthesis reaction vessel temperature, pressure 10Mpa, feeding flow to synthesis reaction vessel is the CO gas of 5000L/h, CO content 〉=70% in this CO gas, O
2＜0.4%.After the reaction beginning, the carbonyl compound gas of drawing is fed a condenser, 25 ℃ of control condensing temperatures, obtain 2315L iron carbonyl liquid, iron carbonyl liquid and CO gas are passed through three grades of separators, pressure is respectively 10MPa, 5MPa, and normal pressure, dissolved CO gas all discharges in the liquid, obtains the iron carbonyl product.
Claims (2)
1. the production method of an iron carbonyl, it is characterized in that this method is that the pig iron is put into synthesis reactor as raw material, 100～250 ℃ of control synthesis reactor internal temperatures, pressure 15～25MPa, feed CO gas to synthesis reactor, the Fe element begins to generate the gaseous state iron carbonyl with the CO reaction in the raw material, iron carbonyl and CO are drawn synthesis reactor with gaseous form, under less than 40 ℃ environment it is carried out condensation, iron carbonyl changes liquid state into after the condensation.
2. according to the described method of claim, it is characterized in that iron carbonyl liquid and CO gas are carried out three grades of step-downs to be separated, after pressure dropped to normal pressure, dissolved CO gas all discharged in the liquid, obtains the iron carbonyl liquid product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610065022 CN1821095A (en) | 2006-03-17 | 2006-03-17 | Process for producing carbonyl iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610065022 CN1821095A (en) | 2006-03-17 | 2006-03-17 | Process for producing carbonyl iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1821095A true CN1821095A (en) | 2006-08-23 |
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|---|---|---|---|
| CN 200610065022 Pending CN1821095A (en) | 2006-03-17 | 2006-03-17 | Process for producing carbonyl iron |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780987A (en) * | 2010-03-09 | 2010-07-21 | 四川大学 | Carbonyl iron preparation method based on photochemical reaction |
| CN102051431A (en) * | 2010-12-04 | 2011-05-11 | 金川集团有限公司 | Method for producing iron foil by carbonylation |
| CN103128311A (en) * | 2013-03-15 | 2013-06-05 | 金川集团股份有限公司 | Method for producing superfine carbonyl iron powders |
| CN103241780A (en) * | 2013-04-24 | 2013-08-14 | 东华工程科技股份有限公司 | Method for synthesizing carbonyl iron under medium pressure |
| CN104551013A (en) * | 2014-12-07 | 2015-04-29 | 金川集团股份有限公司 | Method for controlling particle size of carbonyl iron powder during decomposition process |
| CN104591300A (en) * | 2014-12-07 | 2015-05-06 | 金川集团股份有限公司 | Method for preparing cobalt carbonyl |
-
2006
- 2006-03-17 CN CN 200610065022 patent/CN1821095A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780987A (en) * | 2010-03-09 | 2010-07-21 | 四川大学 | Carbonyl iron preparation method based on photochemical reaction |
| CN102051431A (en) * | 2010-12-04 | 2011-05-11 | 金川集团有限公司 | Method for producing iron foil by carbonylation |
| CN102051431B (en) * | 2010-12-04 | 2012-11-21 | 金川集团有限公司 | Method for producing iron foil by carbonylation |
| CN103128311A (en) * | 2013-03-15 | 2013-06-05 | 金川集团股份有限公司 | Method for producing superfine carbonyl iron powders |
| CN103128311B (en) * | 2013-03-15 | 2015-08-12 | 金川集团股份有限公司 | A kind of method of producing superfine iron carbonyl powder |
| CN103241780A (en) * | 2013-04-24 | 2013-08-14 | 东华工程科技股份有限公司 | Method for synthesizing carbonyl iron under medium pressure |
| CN104551013A (en) * | 2014-12-07 | 2015-04-29 | 金川集团股份有限公司 | Method for controlling particle size of carbonyl iron powder during decomposition process |
| CN104591300A (en) * | 2014-12-07 | 2015-05-06 | 金川集团股份有限公司 | Method for preparing cobalt carbonyl |
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