Method for preparing carbonyl iron

A carbonyl iron and preparation process technology, applied in the direction of carbonyl iron, etc., can solve the problems of reduced reaction rate in the carbonylation process, low activity of sponge iron, increased production costs, etc., and achieve the goal of increasing carbonylation rate, simple operation, and easy realization Effect

Inactive Publication Date: 2015-04-01
JINCHUAN GROUP LIMITED
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the method for preparing carbonyl iron is usually to react sponge iron with pure carbon monoxide at a certain temperature. Due to the low activity of sponge iron in the reaction process, the reaction rate of the carbonylation process is reduced, resulting in a decrease in the carbonylation rate and an increase. Production cost in the production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Put 4 tons of sponge iron with an iron content of 96.8% in the reactor, and after compression and heating by a heater, pure carbon monoxide gas at 8.5MPa and 200°C enters the reactor to react with the sponge iron, and continuously feeds carbon monoxide Gas, the reaction period is 3 days, and finally produces carbonyl iron liquid 5.82m 3 , The carbonylation rate of sponge iron is 61%.

Embodiment 2

[0014] Put iron content at 96.8%, 4 tons of the same batch of sponge iron in the reactor, use a high-pressure compressor to 3 The 3% decomposition gas is pressurized to 8.5MPa, and the mixed gas is compressed and heated by a heater, so that the mixed gas at 8.5MPa and 200°C enters the reactor to react with the sponge iron. The reaction period is 3 days, and finally produces carbonyl iron liquid 6.68m 3 , The carbonylation rate of sponge iron is 70%.

Embodiment 3

[0016] Put iron content at 96.8%, 4 tons of the same batch of sponge iron in the reactor, use a high-pressure compressor to 3 The decomposed gas after 5% decarburization is pressurized to 8.5MPa, and the mixed gas is compressed and heated by a heater, so that the mixed gas at 8.5MPa and 200°C enters the reactor to react with the sponge iron. The reaction period is 3 days, and finally produces carbonyl iron liquid 7.16m 3 , The carbonylation rate of sponge iron is 75%.

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Abstract

The invention relates to a method for preparing carbonyl iron and relates to improvement of a method for preparing carbonyl ion from sponge iron through carbonylation reaction. The method comprises the following step: enabling raw material sponge iron in a reaction kettle to react with carbon monoxide which passes through the reaction kettle. The method is characterized in that NH3 is adopted as the carbon monoxide gas. The method for preparing carbonyl iron, which is provided by the invention, is simple and convenient to operate, remarkable in effect and easy to implement. The detection result shows that the reaction velocity is remarkably increased in the carbonylation synthesis process, and the carbonylation rate of the sponge iron is ultimately increased.

Description

technical field [0001] The invention discloses a method for preparing carbonyl iron, which relates to an improvement of a method for preparing carbonyl iron by carbonylating sponge iron. Background technique [0002] At present, the method for preparing carbonyl iron is usually to react sponge iron with pure carbon monoxide at a certain temperature. Due to the low activity of sponge iron in the reaction process, the reaction rate of the carbonylation process is reduced, resulting in a decrease in the carbonylation rate and an increase. production costs in the production process. Contents of the invention [0003] The object of the present invention is just to aim at the deficiency that above-mentioned prior art exists, provides a kind of method that can effectively improve the carbonylation rate of sponge iron, reduces production cost and prepares carbonyl iron. [0004] In order to achieve the above object, the present invention adopts the following technical solutions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/16
Inventor 杨志强王芳镇肖冬明江龙王良王大窝朱纪念刘洪彪谢玉琴顾晓峰侍爱国李琛何云霞高银中刘长仨汪金华柳艳峰
Owner JINCHUAN GROUP LIMITED
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