US20210355386A1 - Custom Coke Production - Google Patents
Custom Coke Production Download PDFInfo
- Publication number
- US20210355386A1 US20210355386A1 US16/335,831 US201716335831A US2021355386A1 US 20210355386 A1 US20210355386 A1 US 20210355386A1 US 201716335831 A US201716335831 A US 201716335831A US 2021355386 A1 US2021355386 A1 US 2021355386A1
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- US
- United States
- Prior art keywords
- feedstock
- coke
- carbonaceous
- single feedstock
- source
- 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.)
- Abandoned
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- 239000000571 coke Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 29
- 238000004939 coking Methods 0.000 claims abstract description 17
- 239000006227 byproduct Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 35
- 239000003245 coal Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000009257 reactivity Effects 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 25
- 238000010586 diagram Methods 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000011269 tar Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002864 coal component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 239000005519 non-carbonaceous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
Definitions
- the present invention relates generally to coke processing, and, more specifically, to selecting a custom coke processing method.
- CSR Coke Strength after Reaction
- CRI Coke Reactivity Index
- a method for producing coke where at least a first and a second source of carbonaceous material are added into a mixer. These sources of carbonaceous material are mixed and can be considered a single feedstock of carbonaceous material.
- the single feedstock is analyzed to determine its coking feasibility. Depending on the analysis, the single feedstock is customized into a predetermined material composition. This composition is then pyrolyzed in a pyrolyzer to produce coke material.
- first source of carbonaceous material could be coal fines
- second source of carbonaceous material could be coke waste fines.
- Other material and combinations of material are also possible.
- pyrolyzing the customized single feedstock of carbonaceous material may include producing a high-grade coke material.
- the predetermined material composition may be selected from the group consisting of a particular composition, a particular reactivity, a particular shape, a particular by-product generation, a particular size, a particular strength, and a particular heating value.
- a method for producing coke includes mixing at least a first and a second carbonaceous material into a single feedstock of carbonaceous material. The coking feasibility of the single feedstock of carbonaceous material is then determined.
- the single feedstock is customized into a predetermined material composition.
- the customized single feedstock is pyrolyzed to produce coke material and coke by-products.
- the predetermined material composition is selected from the group consisting of a particular composition, a particular reactivity, a particular shape, a particular by-product generation, a particular size, a particular strength, and a particular heating value.
- a method for producing coke includes introducing a first source of carbonaceous material as a first feedstock into a mixer, and introducing a second source of carbonaceous material as a second feedstock into the mixer. These two sources of carbonaceous materials are mixed into a single feedstock of carbonaceous material where possibly a third material is added to the feedstock mixture.
- the single feedstock of carbonaceous material is analyzed to determine its coking feasibility, and then customized into a predetermined material composition that allows the customized single feedstock to be pyrolyzed to produce coke material which has at least a 600 lbs per square inch crushing strength.
- FIG. 1 is a flow diagram showing a first embodiment of a custom coking process according to principles of the present invention
- FIG. 2 is another flow diagram showing a second embodiment of the process of FIG. 1 ;
- FIG. 3 is a flow diagram showing pyrolyzation of a mixture formed according to the methods of FIG. 1 or 2 .
- coke processes do not require high-quality coking coals, nor are they limited to only two inputs of carbonaceous materials. Further, the disclosed processes use feedstock material more efficiently because “waste” products or fines may be used to create high-quality coke and thereby, among other things, contribute to what is environmentally friendly coke production. In addition, energy savings are recognized at least in part due to the reduced time required to produce this high-quality coke.
- Coal blending for coke production varies in the number of coals used. It also varies with the proportion, rank, coking properties, and geographical origin of the coal components. Coal selection and blend composition are major factors controlling physical and chemical coal properties. These factors contribute to what is sometimes referred to as devolatilization behavior.
- the first group of models focuses on the prediction of cold mechanical, metallurgical, or “met” coke strength.
- the second group of models uses the CSR and CRI indices as coke quality parameters.
- no universal prediction model has been recognized, especially for custom coke production. Some coals or blends show significant deviations between prediction results based on a model and actual use.
- FIG. 1 is a flow diagram showing a first embodiment of a custom coking process according to principles of the present invention.
- the process begins at oval 100 .
- a first and a second process block 102 , 104 are illustrated as combining carbonaceous materials in a mixer at mixer block 106 .
- the mixer ingredients are then analyzed at process block 108 .
- the mixture will be customized for a future pyrolyzation step where coke is formed.
- decision block 110 if the question of whether to customize the mixture is answered in the affirmative, “Yes” branch is taken and customization occurs at process block 112 .
- Customization can include shape, size, percentage of and type of carbonaceous fines to be used in pyrolyzation, and so forth. For example, where the mixture indicates the type of output that will be produced through a future pyrolyzation step, if the carbonaceous mixture so indicates, it may be formed into robust shells that are filled with carbonaceous fines prior to the heating step of pyrolyzation.
- process block 112 is skipped and the mixture is passed directly to pyrolyzer process block 114 which is described in more detail in FIG. 3 .
- FIG. 2 is another flow diagram showing a second embodiment of the process of FIG. 1 .
- coking process begins at oval 200 , and ends at oval 204 after following a similar process as the coking process of FIG. 1 .
- process block 202 shows that other material is introduced into the mixer process 106 .
- This other material could be any number of things such as additional carbonaceous material, additional non-carbonaceous material, multiple combinations of such materials, and so forth.
- FIG. 3 is a flow diagram showing pyrolyzation of a mixture formed according to the methods of FIG. 1 or 2 .
- the pyrolyzer step 114 of FIGS. 1 and 2 begins at oval 300 and moves to process block 302 for properly forming introduced mixtures. After former block 302 , decision block, diamond 304 , is taken.
- mixer ingredients are returned to process block 302 for further forming.
- separator 310 is illustrated where the pyrolyzed mixture may be separated into tars and gases.
- Decision block 312 is the step where it is decided if useable tars are present. If so, “yes” branch is taken and tar treatment process block 314 is entered.
Abstract
Description
- The present invention relates generally to coke processing, and, more specifically, to selecting a custom coke processing method.
- Various coke processing methods are known in the art. For example, U.S. Pat. No. 7,785,447 issued to Eatough et al., discloses concepts related to clean coke processing such as continuously producing a high-grade of coke from low-grade materials without causing a pollution problem.
- In addition, the International Journal of Coal Geology points out that CSR (Coke Strength after Reaction) and CRI (Coke Reactivity Index) indices may be used to indicate coke strength; e.g., high quality coke means CRI is low and CSR is high. It is to be recognized that CSR and CRI indices were developed as coke quality indicators of coke produced with traditional oven methods.
- The following disclosure relates to further improvements in the art; non-obvious improvements, as demonstrated by the failure of those of ordinary skill in the art to implement such improvements after having available the benefit of these earlier coking disclosures.
- It has been discovered that at least the aforementioned challenges are resolved by a method as disclosed herein. Upon viewing the present disclosure, one of ordinary skill in the art will appreciate that variations of principles according to the present invention could be contemplated.
- For example, in one inventive embodiment, a method for producing coke is disclosed where at least a first and a second source of carbonaceous material are added into a mixer. These sources of carbonaceous material are mixed and can be considered a single feedstock of carbonaceous material.
- The single feedstock is analyzed to determine its coking feasibility. Depending on the analysis, the single feedstock is customized into a predetermined material composition. This composition is then pyrolyzed in a pyrolyzer to produce coke material.
- It should be noted that the first source of carbonaceous material could be coal fines, and the second source of carbonaceous material could be coke waste fines. Other material and combinations of material are also possible. Further, pyrolyzing the customized single feedstock of carbonaceous material may include producing a high-grade coke material.
- In addition, the predetermined material composition may be selected from the group consisting of a particular composition, a particular reactivity, a particular shape, a particular by-product generation, a particular size, a particular strength, and a particular heating value.
- In another embodiment, a method for producing coke includes mixing at least a first and a second carbonaceous material into a single feedstock of carbonaceous material. The coking feasibility of the single feedstock of carbonaceous material is then determined.
- Based on the determination, the single feedstock is customized into a predetermined material composition. The customized single feedstock is pyrolyzed to produce coke material and coke by-products.
- In some cases, the predetermined material composition is selected from the group consisting of a particular composition, a particular reactivity, a particular shape, a particular by-product generation, a particular size, a particular strength, and a particular heating value.
- In a specific embodiment, a method for producing coke includes introducing a first source of carbonaceous material as a first feedstock into a mixer, and introducing a second source of carbonaceous material as a second feedstock into the mixer. These two sources of carbonaceous materials are mixed into a single feedstock of carbonaceous material where possibly a third material is added to the feedstock mixture.
- The single feedstock of carbonaceous material is analyzed to determine its coking feasibility, and then customized into a predetermined material composition that allows the customized single feedstock to be pyrolyzed to produce coke material which has at least a 600 lbs per square inch crushing strength.
- The foregoing is a summary and thus contains, by necessity, simplifications, generalizations, and omissions of detail; consequently, those skilled in the art will appreciate that the summary is illustrative only and is not intended to be in any way limiting. Other aspects, inventive features, and advantages of the present invention, as defined solely by the claims, will become apparent in the non-limiting detailed description set forth below.
- The present invention may be better understood, and its numerous objects, features, and advantages made apparent to those skilled in the art by referencing the accompanying drawings.
-
FIG. 1 is a flow diagram showing a first embodiment of a custom coking process according to principles of the present invention; -
FIG. 2 is another flow diagram showing a second embodiment of the process ofFIG. 1 ; and -
FIG. 3 is a flow diagram showing pyrolyzation of a mixture formed according to the methods ofFIG. 1 or 2 . - The following provides a detailed description of examples of the present invention and should not be taken to be limiting of the invention itself. Rather, any number of variations may fall within the scope of the invention, which is defined in the claims following this detailed description.
- Reference will now be made in detail to embodiments of the invention illustrated in accompanying drawings. Whenever possible, the same or similar reference numerals are used in the drawings and the description to refer to the same or like parts, acts, or steps. The drawings are in simplified form.
- Those of ordinary skill in the art will appreciate that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developer's specific goals, such as compliance with system-related, metallurgical-related constraints, which may vary from one implementation to another. Such would be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill in the art and having the benefit of the present disclosure.
- These coke processes do not require high-quality coking coals, nor are they limited to only two inputs of carbonaceous materials. Further, the disclosed processes use feedstock material more efficiently because “waste” products or fines may be used to create high-quality coke and thereby, among other things, contribute to what is environmentally friendly coke production. In addition, energy savings are recognized at least in part due to the reduced time required to produce this high-quality coke.
- Coal blending for coke production varies in the number of coals used. It also varies with the proportion, rank, coking properties, and geographical origin of the coal components. Coal selection and blend composition are major factors controlling physical and chemical coal properties. These factors contribute to what is sometimes referred to as devolatilization behavior.
- As aids to coal selection for coke quality predictions, several mathematical models are available. These can be divided into two groups. The first group of models focuses on the prediction of cold mechanical, metallurgical, or “met” coke strength.
- The second group of models uses the CSR and CRI indices as coke quality parameters. At this writing, no universal prediction model has been recognized, especially for custom coke production. Some coals or blends show significant deviations between prediction results based on a model and actual use.
- Of note, almost all of today's coking plants use some sort of a model to try to predict coal rank, petrology, rheological properties, and ash chemistry. However, in the past, unlike the presently disclosed inventive embodiments, batteries of heat-recovery ovens were needed to attempt to accomplish the results predicted by the models. To attempt to operate in environmentally friendly modes, some ovens operated under suction with no emissions during the coking process.
-
FIG. 1 is a flow diagram showing a first embodiment of a custom coking process according to principles of the present invention. - In the illustrated embodiment, the process begins at
oval 100. After oval 100, a first and asecond process block mixer block 106. - The mixer ingredients are then analyzed at
process block 108. In particular embodiments, the mixture will be customized for a future pyrolyzation step where coke is formed. As indicated at decision block 110, if the question of whether to customize the mixture is answered in the affirmative, “Yes” branch is taken and customization occurs atprocess block 112. - Customization can include shape, size, percentage of and type of carbonaceous fines to be used in pyrolyzation, and so forth. For example, where the mixture indicates the type of output that will be produced through a future pyrolyzation step, if the carbonaceous mixture so indicates, it may be formed into robust shells that are filled with carbonaceous fines prior to the heating step of pyrolyzation.
- Otherwise, process block 112 is skipped and the mixture is passed directly to pyrolyzer process block 114 which is described in more detail in
FIG. 3 . - Finally, as indicated by
oval 116, the flow diagram ofFIG. 1 comes to an end and the custom coke production has completed. -
FIG. 2 is another flow diagram showing a second embodiment of the process ofFIG. 1 . However, in theFIG. 2 embodiment, coking process begins atoval 200, and ends atoval 204 after following a similar process as the coking process ofFIG. 1 . However, process block 202 shows that other material is introduced into themixer process 106. This other material could be any number of things such as additional carbonaceous material, additional non-carbonaceous material, multiple combinations of such materials, and so forth. -
FIG. 3 is a flow diagram showing pyrolyzation of a mixture formed according to the methods ofFIG. 1 or 2 . For ease of understanding, the pyrolyzer step 114 ofFIGS. 1 and 2 begins atoval 300 and moves to process block 302 for properly forming introduced mixtures. Afterformer block 302, decision block,diamond 304, is taken. - If it is determined that the mixer ingredients are not ready for pyrolyzation, as indicated at
process block 306, the mixer ingredients are returned to process block 302 for further forming. - Once
diamond 304 indicates that the mixer ingredients are ready for pyrolyzation, the mixer ingredients enter the pyrolyzation process block 308 and coke is produced atprocess block 309. - In addition,
separator 310 is illustrated where the pyrolyzed mixture may be separated into tars and gases.Decision block 312 is the step where it is decided if useable tars are present. If so, “yes” branch is taken and tartreatment process block 314 is entered. - Alternatively, or in addition, “no” branch is taken and gas
treatment process block 316 is used. Followinggas treatment 316, oval 318 indicates that the method returns to the previous Fig. - Upon viewing the present disclosure, those of ordinary skill in the art will appreciate that other equivalent materials and steps could be substituted to realize the presently disclosed invention.
- Although various disclosure embodiments have been described in the foregoing detailed description and illustrated in the accompanying drawings, it will be understood that the presently disclosed invention is not limited to the embodiments disclosed, but indeed may assume numerous arrangements, re-arrangements, modifications, and substitutions of elements or steps without departing from the spirit and intended scope of the invention herein set forth. The appended claims are to encompass within their scope all such changes and modifications as are within the true spirit and scope of this invention.
- Furthermore, it is to be understood that the invention is solely defined by the appended claims. It will be understood by those with skill in the art that if a specific number of an introduced claim element is intended, such intent will be explicitly recited in the claim, and in the absence of such recitation no such limitation is present.
- For a non-limiting example, as an aid to understanding, the following appended claims contain usage of the introductory phrases “at least one” and “one or more” to introduce claim elements. However, the use of such phrases should not be construed to imply that the introduction of a claim element by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim element to inventions containing only one such element, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an”; the same holds true for the use in the claims of definite articles.
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2017/042478 WO2019017888A1 (en) | 2017-07-18 | 2017-07-18 | Custom coke production |
Publications (1)
Publication Number | Publication Date |
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US20210355386A1 true US20210355386A1 (en) | 2021-11-18 |
Family
ID=65016671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US16/335,831 Abandoned US20210355386A1 (en) | 2017-07-18 | 2017-07-18 | Custom Coke Production |
Country Status (4)
Country | Link |
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US (1) | US20210355386A1 (en) |
CN (1) | CN110268038A (en) |
CA (1) | CA3039228C (en) |
WO (1) | WO2019017888A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114921259A (en) * | 2022-05-18 | 2022-08-19 | 山西太钢不锈钢股份有限公司 | Method for improving crushing strength of coke |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140144071A1 (en) * | 2010-09-01 | 2014-05-29 | Jfe Steel Corporation | Method for evaluating thermal plasticity of coals and caking additives, and method for producing coke |
US20150040468A1 (en) * | 2012-03-27 | 2015-02-12 | Jfe Steel Corporation | Method for preparing coal mixture for cokemaking, coal mixture, and method for producing coke |
US20150047961A1 (en) * | 2011-10-14 | 2015-02-19 | Jfe Steel Corporation | Method for manufacturing coke |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7022147B2 (en) * | 2001-06-13 | 2006-04-04 | Mbzq, L.L.C. | Combustible fuel composition and method |
US20030057083A1 (en) * | 2001-09-17 | 2003-03-27 | Eatough Craig N. | Clean production of coke |
RU2329292C1 (en) * | 2007-05-02 | 2008-07-20 | Ооо "Тту" | Method and facuility for thermal processing of hihc-ash and low-calorig solid fuel |
CN101845343A (en) * | 2010-06-07 | 2010-09-29 | 成都市翻鑫家科技有限公司 | Industrial hybrid shaped coke |
CN102746865B (en) * | 2011-04-21 | 2014-03-05 | 宝钢集团有限公司 | Preparation method of formed coke used for smelting-reduction ironmaking |
CN103788969B (en) * | 2012-11-01 | 2016-08-03 | 中国石油化工股份有限公司 | A kind of coal and the group technology of petroleum refining side-product copyrolysis |
JP6014012B2 (en) * | 2013-12-04 | 2016-10-25 | 株式会社神戸製鋼所 | Coke production method and coke |
CN104164247B (en) * | 2014-06-12 | 2017-04-12 | 榆林学院 | Method for separating light component oil and solid slag from medium-low temperature heavy coal tar, and application of solid slag in bonding semi-coke to prepare briquette and formcoke by |
-
2017
- 2017-07-18 WO PCT/US2017/042478 patent/WO2019017888A1/en active Application Filing
- 2017-07-18 CN CN201780075855.2A patent/CN110268038A/en active Pending
- 2017-07-18 US US16/335,831 patent/US20210355386A1/en not_active Abandoned
- 2017-07-18 CA CA3039228A patent/CA3039228C/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140144071A1 (en) * | 2010-09-01 | 2014-05-29 | Jfe Steel Corporation | Method for evaluating thermal plasticity of coals and caking additives, and method for producing coke |
US20150047961A1 (en) * | 2011-10-14 | 2015-02-19 | Jfe Steel Corporation | Method for manufacturing coke |
US9463980B2 (en) * | 2011-10-14 | 2016-10-11 | Jfe Steel Corporation | Method for manufacturing coke |
US20150040468A1 (en) * | 2012-03-27 | 2015-02-12 | Jfe Steel Corporation | Method for preparing coal mixture for cokemaking, coal mixture, and method for producing coke |
US10144891B2 (en) * | 2012-03-27 | 2018-12-04 | Jfe Steel Corporation | Method for preparing coal mixture for cokemaking, coal mixture, and method for producing coke |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114921259A (en) * | 2022-05-18 | 2022-08-19 | 山西太钢不锈钢股份有限公司 | Method for improving crushing strength of coke |
Also Published As
Publication number | Publication date |
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CA3039228C (en) | 2020-08-11 |
WO2019017888A1 (en) | 2019-01-24 |
CA3039228A1 (en) | 2019-01-24 |
CN110268038A (en) | 2019-09-20 |
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