CN102910685A - Tubular reactor for pyrolytic process of carbonyl iron powder - Google Patents
Tubular reactor for pyrolytic process of carbonyl iron powder Download PDFInfo
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- CN102910685A CN102910685A CN2011102246820A CN201110224682A CN102910685A CN 102910685 A CN102910685 A CN 102910685A CN 2011102246820 A CN2011102246820 A CN 2011102246820A CN 201110224682 A CN201110224682 A CN 201110224682A CN 102910685 A CN102910685 A CN 102910685A
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- carbonyl iron
- shell
- tube reactor
- iron dust
- pyrolytic process
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Abstract
The invention discloses a tubular reactor for a pyrolytic process of carbonyl iron powder. The tubular reactor comprises a carbonyl iron powder storage device, an automatic adjustment and control device, a reaction device and a collection and purification device which are connected with one another in sequence. The tubular reactor is characterized in that the reaction device adopts a tubular reactor. Compared with the single-tube reactor in which the furnace diameter increases merely, the tubular reactor is high in operation elasticity and stable in running, ensures that the particle size distribution range of the carbonyl iron powder tends to be more reasonable, and realizes the scale production of the carbonyl iron powder.
Description
Technical field
The present invention relates to a kind of device of carbonyl iron dust pyrolytic process, belong to chemical technology field, particularly a kind of carbonyl iron dust pyrolytic process shell and tube reactor.
Background technology
Carbonyl iron dust is widely used in the fields such as metallurgy, chemical industry, electronics, military affairs as the base mateiral with property.Preparation process is sponge iron and CO (carbon monoxide converter) gas synthesizing iron pentacarbonyl under high temperature, high pressure, and pentacarbonyl iron through thermal degradation, produces carbonyl iron dust and carbon monoxide under special conditions.The carbonyl iron dust of preparation has widely practicality because having the characteristics such as particle diameter is little, iron purity is high, outward appearance is spherical in shape, Electronic Performance is good.
The method of the carbonyl iron dust pyrolysis of prior art is with after the pentacarbonyl iron vaporization, passes into reactor and carry out the high temperature pyrolysis reaction under the protection of nitrogen, collects product after reaction finishes.It is 2007103041997,2006101453517,2006100374363 Chinese patent application such as application number, wherein reactor is generally the single hose reactor, industrial scale is less, in order to expand the scale of production, common way is to increase reactor body of heater diameter, has reduced the stability of equipment, and the requirement of the utility appliance such as temperature and pressure is needed to improve, thereby improved production cost, the purity of product descends.
Because carbonyl iron dust is in pyrolytic process, as long as temperature and flow generation minor alteration will affect the size of pyrolysis iron powder, so reactor must be the high device of a kind of stability.Shell and tube reactor is a kind of heat-exchanger rig, is widely used in the chemical technique.Especially the ceramic-like shell and tube reactor has good heat conductivility and thermostability, shell and tube reactor is applied to the pyrolytic process of carbonyl iron dust, will greatly improve the thermostability of reaction, thereby improves the purity of product.
Summary of the invention
The invention provides a kind of carbonyl iron dust pyrolytic process shell and tube reactor, solved the problem of thermostability in the carbonyl iron dust pyrolytic reaction, thereby enhanced productivity, reduce cost, and the purity of product is improved also.
The present invention realizes by following technical scheme:
A kind of carbonyl iron dust pyrolytic process shell and tube reactor comprises the pentacarbonyl iron storing unit, automatic adjusting control device, reaction unit and the collection purification devices that connect successively, and described reaction unit adopts shell and tube reactor.
Also be connected impeller pump between described pentacarbonyl iron storing unit and the automatic adjusting control device.
Described pentacarbonyl iron storing unit is a kind of with measuring apparatus and manometric storage tank.
Described automatic adjusting control device comprises strainer, throttling valve and the under meter that connects successively.
Described shell and tube reactor is two and the plural single hose reactor that connects side by side, and each single hose reactor head arranges an atomisation unit.
Described collection purification devices comprises receiving vat and the filtration unit that connects successively.
Described receiving vat contains screw conveyer.
The invention also discloses a kind of pyrolytic process that adopts this shell and tube reactor to carry out carbonyl iron dust, is to realize by following step:
(1) pentacarbonyl iron pre-treatment: the pentacarbonyl iron in the storage tank enters strainer and filters after the impeller pump pressurization, the pentacarbonyl iron powder after the filtration is through the control of throttling valve and under meter, and evenly distribute is in each single tubulation of shell and tube reactor;
(2) carbonyl iron dust pyrolysis: the pentacarbonyl iron that enters shell and tube reactor carries out pyrolytic reaction under the protection of nitrogen; vaporization is decomposed; generate the iron powder that micron order has spherical design and laminate structure; the iron powder that generates falls into receiving vat; take out from system under the promotion of screw conveyer, carbon monoxide installs after filtration to reclaim and uses.
Pentacarbonyl iron atomizes at each single tubulation top of shell and tube reactor in the described step (1).
Pyrolysis temperature in the described step (2) is epimere temperature: 220-240 ℃, stage casing temperature: 230-250 ℃, and hypomere temperature: 240-260 ℃; Pressure is 10.0kpa, inlet amount: 180kg/h.
Beneficial effect of the present invention is:
1, overcome monomer-type reactor production capacity little, the shortcoming of poor stability adopts the shell and tube layout, has fundamentally realized the carbonyl iron dust large-scale production, and stability is high, and the iron powder product cut size distributes rationally.
2, production capacity of the present invention is existing more than 6 times of single hose reactor production capacity, and cost is original about 70%, has realized the optimum matching of product and production capacity.
Description of drawings
Fig. 1 is the device schematic diagram of carbonyl iron dust pyrolytic process shell and tube reactor
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Such as Fig. 1, it is the device schematic diagram of carbonyl iron dust pyrolytic process shell and tube reactor, comprise storage tank 1, impeller pump 2, strainer 3, throttling valve 11, the under meter 4 of the pentacarbonyl iron that connects successively and shell and tube reactor single tube 5～8, receiving vat 9, the strainer 10 that connects, wherein each single tube top of shell and tube reactor arranges an atomisation unit 12.
Concrete workflow is: the pentacarbonyl iron in the storage tank 1 enters strainer 3 and filters after impeller pump 2 pressurizations, pentacarbonyl iron after the filtration is through the control of throttling valve 11 and under meter 4, evenly distribute is carried out the pentacarbonyl iron atomizing in the atomisation unit 12 at shell and tube reactor top in each single tubulation of shell and tube reactor;
The pentacarbonyl iron that enters shell and tube reactor carries out pyrolytic reaction under the protection of nitrogen; vaporization is decomposed; generate the iron powder that micron order has spherical design and laminate structure; the iron powder that generates falls into receiving vat 9; under the promotion of screw conveyer 13; take out from system after the twice butterfly valve is airtight, carbon monoxide installs after filtration 10 and reclaims use.
The iron powder particle diameter that the present invention produces is fit to scale operation at 1～10 μ m.
Claims (10)
1. a carbonyl iron dust pyrolytic process shell and tube reactor comprises the carbonyl iron dust storing unit, automatic adjusting control device, reaction unit and the collection purification devices that connect successively, it is characterized in that described reaction unit adopts shell and tube reactor.
2. carbonyl iron dust pyrolytic process shell and tube reactor as claimed in claim 1 is characterized in that also being connected impeller pump between described carbonyl iron dust storing unit and the automatic adjusting control device.
3. carbonyl iron dust pyrolytic process shell and tube reactor as claimed in claim 1 is characterized in that described carbonyl iron dust storing unit is a kind of with measuring apparatus and manometric storage tank.
4. carbonyl iron dust pyrolytic process shell and tube reactor as claimed in claim 1 is characterized in that described automatic adjusting control device comprises strainer, throttling valve and the under meter that connects successively.
5. carbonyl iron dust pyrolytic process shell and tube reactor as claimed in claim 1 is characterized in that described shell and tube reactor is two and the plural single hose reactor that connects side by side, and each single hose reactor head arranges an atomisation unit.
6. carbonyl iron dust pyrolytic process shell and tube reactor as claimed in claim 1 is characterized in that described collection purification devices comprises receiving vat and the filtration unit that connects successively.
7. carbonyl iron dust pyrolytic process shell and tube reactor as claimed in claim 1 is characterized in that described receiving vat contains screw conveyer.
8. pyrolytic process that adopts this shell and tube reactor to carry out carbonyl iron dust it is characterized in that realizing by following step:
(1) pentacarbonyl iron pre-treatment: the pentacarbonyl iron in the storage tank enters strainer and filters after the impeller pump pressurization, the pentacarbonyl iron after the filtration is through the control of throttling valve and under meter, and evenly distribute is in each single tubulation of shell and tube reactor;
(2) carbonyl iron dust pyrolysis: the carbonyl iron dust that enters shell and tube reactor carries out pyrolytic reaction under the protection of nitrogen; vaporization is decomposed; generate the iron powder that micron order has spherical design and laminate structure; the iron powder that generates falls into receiving vat; under the promotion of screw conveyer; take out from system after the twice butterfly valve is airtight, carbon monoxide installs after filtration to reclaim and uses.
9. a kind of pyrolytic process that adopts this shell and tube reactor to carry out carbonyl iron dust as claimed in claim 8 is characterized in that pentacarbonyl iron atomizes at each single tubulation top of shell and tube reactor in the described step (1).
10. a kind of pyrolytic process that adopts this shell and tube reactor to carry out carbonyl iron dust as claimed in claim 8, the temperature that it is characterized in that the pyrolysis in the described step (2) is epimere temperature: 220-240 ℃, stage casing temperature: 230-250 ℃, hypomere temperature: 240-260 ℃; Pressure is 10.0kpa, inlet amount: 180kg/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102246820A CN102910685A (en) | 2011-08-05 | 2011-08-05 | Tubular reactor for pyrolytic process of carbonyl iron powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102246820A CN102910685A (en) | 2011-08-05 | 2011-08-05 | Tubular reactor for pyrolytic process of carbonyl iron powder |
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| CN102910685A true CN102910685A (en) | 2013-02-06 |
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| CN2011102246820A Pending CN102910685A (en) | 2011-08-05 | 2011-08-05 | Tubular reactor for pyrolytic process of carbonyl iron powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588680A (en) * | 2014-12-07 | 2015-05-06 | 金川集团股份有限公司 | Carbonyl iron decomposition method capable of controlling oxygen content in iron powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022905A (en) * | 2004-09-03 | 2007-08-22 | Cvrd英科有限公司 | Process for producing metal powders |
| US20090297709A1 (en) * | 2008-05-29 | 2009-12-03 | Vale Inco Limited | Carbon encapsulated metal particles and method of manufacturing the same |
| CN101696038A (en) * | 2009-10-26 | 2010-04-21 | 江西悦安超细金属有限公司 | Method for preparing carbonyl iron powder in high-pressure circulating way |
-
2011
- 2011-08-05 CN CN2011102246820A patent/CN102910685A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022905A (en) * | 2004-09-03 | 2007-08-22 | Cvrd英科有限公司 | Process for producing metal powders |
| US20090297709A1 (en) * | 2008-05-29 | 2009-12-03 | Vale Inco Limited | Carbon encapsulated metal particles and method of manufacturing the same |
| CN101696038A (en) * | 2009-10-26 | 2010-04-21 | 江西悦安超细金属有限公司 | Method for preparing carbonyl iron powder in high-pressure circulating way |
Non-Patent Citations (3)
| Title |
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| 郑洁修等: "《化工过程开发概要》", 31 October 1991, 高等教育出版社 * |
| 韩凤麟等: "《钢铁粉末生产》", 31 May 1981, 冶金工业出版社 * |
| 高保军: "高压羰化法镍精炼设计", 《有色冶炼》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588680A (en) * | 2014-12-07 | 2015-05-06 | 金川集团股份有限公司 | Carbonyl iron decomposition method capable of controlling oxygen content in iron powder |
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Application publication date: 20130206 |