CN102197112A - Production method for coking additive for coal - Google Patents
Production method for coking additive for coal Download PDFInfo
- Publication number
- CN102197112A CN102197112A CN2009801429967A CN200980142996A CN102197112A CN 102197112 A CN102197112 A CN 102197112A CN 2009801429967 A CN2009801429967 A CN 2009801429967A CN 200980142996 A CN200980142996 A CN 200980142996A CN 102197112 A CN102197112 A CN 102197112A
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- CN
- China
- Prior art keywords
- coal
- cog
- distillation
- distillation tower
- manufacture method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
- C10C1/04—Working-up tar by distillation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
A production method for a coking additive for coal which is added to charging coal charged to a coke oven, characterized in that distillation vapor containing low boiling-point components produced from a distillation column (10) is fed back to a produced COG line (2) which cools/gas-processes COG produced from the coke oven (1) and processes the distillation vapor together with the COG.
Description
Technical field
The coal bonding that the present invention relates to be used for to add at the shove charge coal that is encased in pit kiln is mended the manufacture method of underfill material.
Background technology
In iron work, make the coke that uses in the blast furnace with pit kiln.Pit kiln is that coal is carried out pyrogenous Large Furnace.
If with the coal pit kiln of packing into, then the moisture in coal from the temperature-rise period of normal temperature to 100 ℃ is evaporated.If reach more than 300 ℃, just fusing of coal, expand, if further heating, then coal fuse each other, fixed.In this process, contained C or H etc. take place to decompose and combination in the coal, produce gas and coal tar, generate semicoke simultaneously.
If reach more than 500 ℃, the then curing of semicoke and shrink development, when reaching 900 ℃, semicoke roughly all become coke.
The gas that generates in retort process is called as COG (Coke Oven Gas, pit kiln gas), and its energy that is used as iron work uses.Coal tar takes out from pit kiln as by product.
The fusing of coal, expansion and fusion, fixed behavior differ widely because of the kind and the kind of coal.With coal fuse each other, fixed character is called " cohesiveness ".
If, then become crisp coke with the direct destructive distillation of the coal a little less than the cohesiveness, if but the strong coal of cohesiveness is carried out destructive distillation, then whole fully fusion, fixed can obtain the high coke of intensity.
Owing to consume a large amount of coke, therefore require to reduce the cost of the coal that becomes its raw material at iron work.
How the strong heavy caking coal of cohesiveness is owing to conclude the business with the form of coke raw material, thereby the price height.The no adhesion coal of bad adhesion and weak caking coal can only be made crisp inferior coke, but cheap.
Therefore, studying always in the past that to make more high-quality with the no adhesion coal of cheapness and weak caking coal as raw material be the technology of strong coke.
As improving with no adhesion coal and weak caking coal is the technology of the quality of the coke made of raw material, has by adding the coal bonding and mends melting and the mobile method that underfill material improves coal.
In patent documentation 1, disclose by in coking coal (being also referred to as caking coal), adding from the coal tar that takes out by pit kiln as by product and removed the heavy ends that lower boiling light ends obtains, thereby made the method for high strength coke.
The manufacture method of separating from coal tar and discharging the low viscous coal bonding benefit underfill material (the auxiliary material of bonding) of low boilers is disclosed in patent documentation 2.This method be at the coal tar that will be from pit kiln takes out as by product when the conduit that is connected distillation tower top is blown into, be blown into water vapor from the conduit that is connected the distillation tower bottom, thereby remove the method for the low boiling point component in the coal tar.Being blown between the position of position and water vapor that be blown into of coal tar is divided into two chambers up and down by column plate, and the pressure in the distillation tower is set at 6.7～26.7kPa, and (50～200Torr) decompression state is set at 170～200 ℃ with Heating temperature.
The look-ahead technique document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 9-100473 communique
Patent documentation 2: No. 3684063 communique of Japanese Patent
Summary of the invention
The problem that invention will solve
Mend in the manufacture method of underfill material in patent documentation 2 disclosed coal bondings in the past, (50～200Torr) decompression state needs pressure regulating equipments such as vacuum pump the pressure in the distillation tower must to be set in 6.7～26.7kPa.
In addition, need be used to make the distillation vapor condensation that contains low boiling point component that takes place from distillation tower and the water cooler that liquefies.
These equipment have all that equipment scale is big, equipment cost is high, overhaul and safeguard very difficult problem.
The objective of the invention is, providing a kind of can make the coal bonding from coal tar and mend the manufacture method that the coal bonding of underfill material is mended underfill material at an easy rate in that newly not establish equipment scale big and be difficult under the situation of maintenance and pressure regulating equipment of safeguarding or water cooler.
Be used to solve the method for problem
The present invention finishes for solving above-mentioned problem, and following method is provided.
(1) a kind of coal bonding is mended the manufacture method of underfill material, its coal tar that will be from pit kiln takes out as by product is blown in the distillation tower from the conduit on the top that is connected distillation tower, reclaim heavy ends by the low boiling point component of removing in the coal tar, described manufacture method is characterised in that: will be returned to from the distillation steam that contains low boiling point component that distillation tower takes place and be used for the COG that pit kiln takes place is cooled off and the generation COG pipeline of gas processing, and described distillation steam is handled with COG.
(2) mend the manufacture method of underfill material according to above-mentioned (1) described coal bonding, wherein, by be located at be used for to the COG that pit kiln takes place cool off and the generation COG pipeline of gas processing on the suction drum blower fan absorb the distillation steam that contains low boiling point component that takes place from distillation tower.
(3) according to the manufacture method of above-mentioned (1) or (2) described coal bonding benefit underfill material, wherein, will be returned between the outlet and COG gas cooler of pit kiln from the distillation steam that contains low boiling point component that distillation tower takes place.
(4) according to the manufacture method of each described coal bonding benefit underfill material in above-mentioned (1)～(3), wherein, the pressure in the distillation tower is set at 93.4～98.6kPa, Heating temperature is set at 180～210 ℃.
The invention effect
According to the present invention, can provide and to make the coal bonding at an easy rate from coal tar and to mend the manufacture method that the coal bonding of underfill material is mended underfill material in that newly not establish equipment scale big and be difficult under the situation of maintenance and pressure regulating equipment of safeguarding or water cooler.
Description of drawings
Fig. 1 is the diagram of an example of the embodiment of the expression coal of the present invention bonding manufacture method of mending underfill material.
Embodiment
Below, adopt Fig. 1 that embodiments of the present invention are described.
In Fig. 1, coking coal is packed in the pit kiln 1 and make coke.In the inside of pit kiln 1, coal is by the destructive distillation coke.In heating process, contained C or H etc. decompose and combination in the coal, generate gas and coal tar as by product.
The pyritous gas (COG) that takes place is fed to COG gas coolers such as primary cooler 3, direct cooler 4 by producing COG pipeline 2, utilizes seawater etc. to cool off.In addition, by gas blower 5, naphthalene washer/ammonia scrubber/(not shown) gas purification processing pipeline such as benzene washer of sending into back segment purify, and are utilized as the energy of iron work.
In producing COG pipeline 2, be provided with the decanting vessel 6, the hypervelocity decanting vessel 7 that are used to reclaim coal tar.The coal tar that is recovered is collected in the tar jar 8, then loading.
In the present invention, utilize the part of the coal tar that is recovered to make coal bonding benefit underfill material.
Coal tar in the tar jar 8 is that moisture is the dehydrated tar below 3%, gives distillation tower 10 by pump 9.
Heated dehydrated tar is blown in the distillation tower 10 from the conduit 17 that is connected distillation tower 10 tops.The inside of distillation tower 10 is divided into multistage by next door 13, thereby improves distilling effect.
From being connected the conduit 18 of distillation tower 10 bottoms, the water vapor of High Temperature High Pressure is blown in the distillation tower 10, the low boiling point component evaporation in the coal tar and become distillation steam, and should distill the steam taking-up from the conduit 19 of the upper end that is connected distillation tower 10.
The heavy ends of having removed the low boiling point component in the coal tar and having obtained accumulates in the bottom in the distillation tower 10, is fetched in jars 15 by pump 14.The potentiality heat of heavy ends is used to dehydrated tar is heated by heat exchanger 11.
Carry out the distillation of coal tar in distillation tower 10 inside like this by above, heavy ends is used as the coal bonding and mends underfill material.
After the distillation steam that contains low boiling point component is absorbed by naphthalene in naphthalene absorption tower 16, under uncondensable state, given and produce COG pipeline 2 by foldback.
Produce COG pipeline 2 and be connected, therefore the distillation steam that contains low boiling point component is cooled off with COG and the gas purification processing with COG gas coolers such as primary cooler 3, direct cooler 4, gas blower 5, naphthalene washer/ammonia scrubber/(not shown) gas purification processing pipeline such as benzene washer.
In the present invention, will give the generation COG pipeline 2 of pit kiln 1, it is handled with COG, therefore not need newly to establish pressure regulating equipment or water coolers such as vacuum pump from the distillation steam that contains low boiling point component foldback under uncondensable state that distillation tower 10 takes place.
In the present invention, utilize the gas blower 5 that is configured in the back segment that produces COG pipeline 2, reduced pressure in the inside of distillation tower 10, the pressure inside of distillation tower 10 is that 93.4～98.6kPa is (about 700～740Torr).Therefore, (50～200Torr) decompression state and Heating temperature is set in 170～200 ℃ the patent documentation 2 disclosed method and compares need be set in the distillation procedure temperature high slightly 180～210 ℃ if with the pressure in the distillation tower being set at 6.7～26.7kPa.So although the needed energy cost of the distillation procedure in the distillation tower 10 increases, the attenuating effect of equipment cost is bigger, thereby total cost is reduced.
Therefore, according to the present invention, can make the coal bonding at an easy rate from coal tar and mend underfill material in that newly not establish equipment scale big and be difficult under the situation of maintenance and pressure regulating equipment of safeguarding and water cooler.
Mend the quality of underfill material with product were identical in the past by the coal bonding that method of the present invention obtains.Mend underfill material by the coal bonding of in no adhesion coal and weak caking coal, adding 1～4 quality %, in the pit kiln 1 of packing into then, the quality (intensity) of the coke that obtains can be brought up to and identical level during as raw material heavy caking coal.
Therefore, can improve the ratio of sneaking into as the no adhesion coal of the cheapness of coke raw material and weak caking coal, its economical effectiveness is extremely big.
More than, preferred embodiment be illustrated of the present invention, but above-mentioned embodiment is an illustration, and should not be construed as the present invention and be defined in this.Clearly, the personnel with common knowledge in the technical field under the present invention can expect various modifications, revise example in the scope of technological thought of the present invention, and these all are understood that to belong to technical scope of the present invention certainly.
Utilizability on the industry
According to the present invention, can provide can be in that newly not establish equipment scale big and be difficult for making at an easy rate the manufacture method of the coking additive for coal of coking additive for coal from coal tar in the situation of the pressure regulating equipment of Problem or cooler.
In addition, the quality of the coking additive for coal that obtains by method of the present invention was with product were identical in the past, by in no adhesion coal and weak caking coal, adding the coking additive for coal of 1～4 quality %, the coke oven of packing into then, can with the quality improvement of the coke that obtains to the equal level during as raw material with heavy caking coal.
Thereby the present invention's utilizability industrially is big.
Symbol description
1 coke oven
2 produce the COG pipeline
3 primary coolers
4 direct coolers
5 gas blowers
6 decanting vessels
7 hypervelocity decanting vessels
8 tar jars
9 pumps
10 distillation towers
11 heat exchangers
12 well heaters
13 next doors
14 pumps
15 jars
16 naphthalene absorption towers
17 conduits
18 conduits
19 conduits
Claims (4)
1. a coal bonds and mends the manufacture method of underfill material, its coal tar that will be from pit kiln takes out as by product is blown in the distillation tower from the conduit on the top that is connected distillation tower, reclaim heavy ends by the low boiling point component of removing in the coal tar, described manufacture method is characterised in that: will be returned to from the distillation steam that contains low boiling point component that distillation tower takes place and be used for the COG that pit kiln takes place is cooled off and the generation COG pipeline of gas processing, and described distillation steam is handled with COG.
2. coal bonding according to claim 1 is mended the manufacture method of underfill material, wherein, by be located at be used for to the COG that pit kiln takes place cool off and the generation COG pipeline of gas processing on the suction drum blower fan absorb the distillation steam that contains low boiling point component that takes place from distillation tower.
3. coal bonding according to claim 1 and 2 is mended the manufacture method of underfill material, wherein, will be returned between the outlet and COG gas cooler of pit kiln from the distillation steam that contains low boiling point component that distillation tower takes place.
4. mend the manufacture method of underfill material according to each described coal bonding in the claim 1～3, wherein, the pressure in the distillation tower is set at 93.4～98.6kPa, Heating temperature is set at 180～210 ℃.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008279393 | 2008-10-30 | ||
| JP2008-279393 | 2008-10-30 | ||
| PCT/JP2009/067195 WO2010050332A1 (en) | 2008-10-30 | 2009-09-25 | Production method for coking additive for coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102197112A true CN102197112A (en) | 2011-09-21 |
Family
ID=42128698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801429967A Pending CN102197112A (en) | 2008-10-30 | 2009-09-25 | Production method for coking additive for coal |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4564593B2 (en) |
| KR (1) | KR101278298B1 (en) |
| CN (1) | CN102197112A (en) |
| BR (1) | BRPI0920772B1 (en) |
| WO (1) | WO2010050332A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790469A (en) * | 2016-08-08 | 2019-05-21 | 株式会社Posco | Modified Tar production technique |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101511717B1 (en) * | 2012-12-18 | 2015-04-13 | 주식회사 포스코 | Facility for manufacturing coke and method for manufacturing coke using the same |
| KR101485655B1 (en) * | 2013-03-05 | 2015-01-22 | 주식회사 포스코 | Process for production of coke |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3566834B2 (en) * | 1997-07-28 | 2004-09-15 | 新日本製鐵株式会社 | Coke production method |
| JP3684063B2 (en) * | 1998-03-02 | 2005-08-17 | 新日本製鐵株式会社 | Method for producing caking aid for charging charcoal |
| JP2003321680A (en) * | 2002-05-01 | 2003-11-14 | Nippon Steel Corp | Method for producing absorbing oil for treating coke gas |
| JP5117084B2 (en) * | 2007-03-22 | 2013-01-09 | Ｊｆｅケミカル株式会社 | Method for treating tar cake and charging method for tar cake in coke oven |
-
2009
- 2009-09-25 JP JP2010504335A patent/JP4564593B2/en not_active Expired - Fee Related
- 2009-09-25 CN CN2009801429967A patent/CN102197112A/en active Pending
- 2009-09-25 WO PCT/JP2009/067195 patent/WO2010050332A1/en active Application Filing
- 2009-09-25 BR BRPI0920772-4A patent/BRPI0920772B1/en not_active IP Right Cessation
- 2009-09-25 KR KR1020117009782A patent/KR101278298B1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790469A (en) * | 2016-08-08 | 2019-05-21 | 株式会社Posco | Modified Tar production technique |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2010050332A1 (en) | 2012-03-29 |
| KR20110081241A (en) | 2011-07-13 |
| WO2010050332A1 (en) | 2010-05-06 |
| BRPI0920772B1 (en) | 2018-01-02 |
| JP4564593B2 (en) | 2010-10-20 |
| KR101278298B1 (en) | 2013-06-25 |
| BRPI0920772A2 (en) | 2015-12-22 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NIPPON STEEL + SUMITOMO METAL CORPORATION Free format text: FORMER OWNER: SHIN NIPPON STEEL LTD. Effective date: 20130326 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130326 Address after: Tokyo, Japan Applicant after: Nippon Steel Corporation Address before: Tokyo, Japan Applicant before: Nippon Steel Corporation |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110921 |