CN116200203A - Calcining method of low-specific-resistance calcined petroleum coke - Google Patents
Calcining method of low-specific-resistance calcined petroleum coke Download PDFInfo
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- CN116200203A CN116200203A CN202310498533.6A CN202310498533A CN116200203A CN 116200203 A CN116200203 A CN 116200203A CN 202310498533 A CN202310498533 A CN 202310498533A CN 116200203 A CN116200203 A CN 116200203A
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- petroleum coke
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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
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
A calcining method of low specific resistance calcined petroleum coke belongs to the technical field of petroleum coke calcining production and comprises the following steps: s1, establishing volatile information and calcination program information databases of petroleum coke raw materials of each raw material batch; s2, determining the matching proportion of different petroleum coke raw materials in production according to the volatile information of the petroleum coke raw materials in the S1, judging whether a default calcining program exists in the current matching proportion, executing the S5 if the default calcining program exists, otherwise executing the S3; s3, the system reads the overlapping interval of the calcination program information of the selected different petroleum coke raw materials, and when each parameter has the overlapping interval, S5 is executed, otherwise S4 is executed; s4, automatic adjustment and/or manual adjustment of the calcination program; s5, the system selects a calcination program and executes a production program; s6, checking the resistivity performance of the calcined petroleum coke, judging whether the resistivity performance meets the technical requirements, and adjusting the calcining procedure when the resistivity performance does not meet the technical requirements.
Description
Technical Field
The invention relates to the technical field of petroleum coke calcination production, in particular to a low specific resistance calcined petroleum coke calcination method.
Background
Volatile matters are important parameters affecting performance indexes of petroleum coke, and particularly the relation between the resistivity of the calcined petroleum coke and the volatile matters is relatively close. The volatile component and the calcination process are most directly related, the research on the development of the prior art is very much, besides general improvement, the traditional calcination process is also proposed to be replaced, for example, the Chinese patent application No. 202210710201.5, the invention name of which is a petroleum coke calcination process, proposes to replace the traditional heating mode by utilizing microwave heating to seek the optimization of the performances such as low temperature and short time removal of the volatile component, resistivity and the like, but the significance of the guidance on large-scale industrial production is not great. In actual production, different petroleum coke raw materials are usually used in a matched mode, the resistivity of the calcined petroleum coke raw materials with large volatile difference is greatly influenced by a calcination program (a temperature raising program), so that petroleum cokes with different sources or grades have different optimal calcination programs, and when the petroleum cokes with different sources or grades are used in a matched mode, how to coordinate the optimal technological conditions of the different petroleum cokes has a certain difficulty in obtaining the petroleum cokes with low specific resistance after calcination with higher efficiency and lower cost.
Disclosure of Invention
In order to solve the problems of the background technology, the invention provides a calcination method of low-specific resistance calcined petroleum coke, which improves verification efficiency and reduces uncertain factors and cost in production.
The technical scheme adopted by the invention is as follows:
the calcining method of the low specific resistance calcined petroleum coke is characterized by comprising the following steps of:
s1, establishing a volatile information and calcination program information database of petroleum coke raw materials of each raw material batch, wherein the calcination program information at least comprises:
a. a multi-section heat preservation temperature interval;
b. a heat preservation time interval corresponding to the multi-section heat preservation temperature interval;
c. a temperature rise rate interval of each section;
s2, determining the matching proportion of different petroleum coke raw materials in production according to the volatile information of the petroleum coke raw materials in the step S1, judging whether a default calcining program exists in the current matching proportion, executing the step S5 if the default calcining program exists, and executing the step S3 if the default calcining program exists;
s3, the system reads overlapping intervals of calcination program information of different selected petroleum coke raw materials, when overlapping intervals exist among the heat preservation temperature interval, the heat preservation time interval and the heating rate interval, the step S5 is executed, and otherwise, the step S4 is executed;
s4, automatic adjustment and/or manual adjustment of the calcination program;
s5, the system selects a calcination program and executes a production program;
s6, checking the resistivity performance of the calcined petroleum coke, judging whether the resistivity performance meets the technical requirements, and adjusting the calcining procedure when the resistivity performance does not meet the technical requirements.
Preferably, in the method for calcining low-specific-resistance calcined petroleum coke, in step S1, the calcining procedure includes at least one pre-sintering section and at least one final-sintering section in the multi-section heat preservation.
Preferably, in the method for calcining low-specific-resistance calcined petroleum coke, in step S2, the default calcining procedure includes a plurality of default calcining procedures, and the system selects according to the priority order.
Preferably, in the calcination method of the low specific resistance calcined petroleum coke, in steps S3 and S5, when overlapping intervals exist in the heat preservation temperature interval, the heat preservation time interval and the heating rate interval, the system selects a median combination of each overlapping interval as a new calcination program, and executes a production program.
Preferably, in the above calcination method of low specific resistance calcined petroleum coke, in step S4, the system automatically generates a recommended calcination program for manual selection and confirmation.
Preferably, in the above calcination method of low specific resistance calcined petroleum coke, the system generates the recommended calcination procedure in the following manner: judging whether the heat preservation temperature interval and the heat preservation time interval both have overlapping intervals, selecting the heat preservation temperature and the heat preservation time of the calcination program in the overlapping intervals when the heat preservation temperature interval and the heat preservation time interval both have overlapping intervals, and recommending the temperature rising rate of the calcination program according to the weight factors.
Preferably, in the calcination method of the low-specific-resistance calcined petroleum coke, the weight factor comprises the blending proportion of petroleum coke raw materials.
Preferably, in the calcination method of the low-specific-resistance calcined petroleum coke, when the heat preservation temperature interval and the heat preservation time interval are different and overlap intervals exist, the system directly displays the calcination program information of each petroleum coke raw material for manual selection or reference.
Preferably, in the above calcination method of low specific resistance calcined petroleum coke, in step S6, when the resistivity performance meets the technical requirement, a calcination program which is currently executed and has not been confirmed as a default calcination program is added to the default calcination program list.
Preferably, in the above calcination method of low specific resistance calcined petroleum coke, the production verification is performed again after the calcination program just added to the default calcination program list is manually adjusted.
Advantageous effects
According to the calcination method of the low-specific-resistance calcined petroleum coke, provided by the invention, the relation between the volatile and the calcined resistivity is established by means of the production control system, so that the rapid adjustment or recommendation of the calcination program is realized, the verification and production efficiency are improved under the condition that the calcined petroleum coke product is ensured to have controllable low-specific-resistance performance, and the uncertain factors and cost in repeated production verification are reduced.
Drawings
FIG. 1 is a schematic diagram of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Examples:
referring to fig. 1, fig. 1 is a schematic diagram of the method of the present invention. The embodiment provides a calcination method of low specific resistance calcined petroleum coke controlled by a production control system, comprising the following steps:
s1, establishing a volatile information and calcination program information database of petroleum coke raw materials of each raw material batch, wherein the calcination program information at least comprises:
a. a multi-section heat preservation temperature interval;
b. a heat preservation time interval corresponding to the multi-section heat preservation temperature interval;
c. the temperature rising rate interval of each section.
S2, the system determines the matching proportion of different petroleum coke raw materials in the production according to the volatile information of the petroleum coke raw materials in the step S1, judges whether a default calcining program exists under the current matching proportion, if so, executes the step S5, otherwise, executes the step S3.
And S3, the system reads overlapping intervals of calcination program information of different selected petroleum coke raw materials, when the overlapping intervals exist among the heat preservation temperature interval, the heat preservation time interval and the heating rate interval, the step S5 is executed, and otherwise, the step S4 is executed.
S4, automatic adjustment and/or manual adjustment of the calcination program.
S5, the system selects a calcination program and executes a production program.
S6, checking the resistivity performance of the calcined petroleum coke, judging whether the resistivity performance meets the technical requirements, and adjusting the calcining procedure when the resistivity performance does not meet the technical requirements.
The invention is based on the implementation that the resistivity of the calcined petroleum coke is greatly influenced by volatile matters, and the resistivity of the calcined petroleum coke raw material with large volatile matters is greatly influenced by the calcining program (heating program), so that petroleum cokes with different sources or grades have different optimal calcining programs, and when the petroleum cokes with different sources or grades are matched for use, the optimal technological conditions of different petroleum cokes need to be coordinated as much as possible, and the petroleum coke with low specific resistance is obtained after calcining with higher efficiency and lower cost.
Specifically, in step S1, a database of volatile information and calcination program information of petroleum coke raw materials for each raw material batch is established. The raw material batches are divided according to raw material sources or raw material actual measurement components or performance indexes, wherein the raw material sources mainly refer to stock input batches and raw material numbers corresponding to raw material manufacturers, and information is input after actual measurement and confirmation are carried out on the stock number batches with unstable components or performance indexes.
Wherein the volatile information of the petroleum coke raw material of each raw material batch comes from a feeding mark or a factory entering detection, and the calcination program information is determined to be the optimal range by a certain period or a certain number of production verifications.
In the multi-stage insulation of the calcination procedure, at least one pre-sintering stage and at least one final-sintering stage should be generally included, for example, if the pre-sintering temperature interval of the pre-sintering stage suitable for most of the petroleum coke raw materials for compounding is approximately 700-900 ℃, and the final-sintering temperature interval of the final-sintering stage is approximately 1200-1350 ℃, then each petroleum coke raw material is specifically corresponding to a finer process interval (the values of the three basic calcination parameters a, b and c described above).
Next, in step S2, the system determines the blending ratio of different petroleum coke raw materials during production according to the volatile information of the petroleum coke raw materials in step S1, and determines whether a default calcination procedure exists at the current blending ratio.
The default calcination program is generally a calcination program which is established according to the previous production verification or by combining with manual adjustment and meets the production requirements and technical standards, the system can automatically record the execution programs in the production verification, the execution programs can also be manually adjusted, and the execution programs meeting the requirements can become the default calcination program, so that the default calcination program can comprise a plurality of calcination programs, and the system can select according to the priority order.
In the above step, if the system judges that the default calcination program exists at the current mating ratio, the calcination program may be directly selected, the production program is executed (step S5), and if the default calcination program does not exist, step S3 is executed.
Specifically, step S3 is to read overlapping intervals of calcination program information of different selected petroleum coke raw materials by the system, and execute the production program when overlapping intervals exist in the heat preservation temperature interval, the heat preservation time interval and the heating rate interval (step S5), otherwise, perform automatic adjustment and/or manual adjustment of the calcination program (step S4).
In general, in the above step, when there is a coincidence zone in each of the heat preservation temperature zone, the heat preservation time zone, and the temperature rising rate zone, the system may select a median combination of each coincidence zone as a new calcination program, and execute a production program. In the production of high-quality calcined petroleum coke products, if the high-precision joint control of a plurality of important technical indexes is performed, for example, in the joint control of resistivity and sulfur content, when the overlapping interval exists in the heat preservation temperature interval, the heat preservation time interval and the heating rate interval, pre-stored calcination program information based on the sulfur content control target can be further introduced for comparison, so that the heat preservation temperature interval, the heat preservation time interval and the heating rate interval are secondarily preferred, the calcination program after the secondary preference can not be the median value of each overlapping interval any more, for example, according to the requirement of sulfur content control, the heat preservation temperature tends to be valued at the high position (the range larger than the median value) of the heat preservation temperature overlapping interval of at least the final burning section, the heat preservation time also tends to be valued at the high position (the range larger than the median value) of the heat preservation time overlapping interval of at least the final burning section, and the like.
Step S4 mentioned above is a process of automatically adjusting and/or manually adjusting the calcination program, and preferably the system automatically generates a recommended calcination program for manual selection and confirmation based on the data reading. The recommended manner may be set manually, preferably the system generates the recommended calcination procedure in the following manner: judging whether the heat preservation temperature interval and the heat preservation time interval both have overlapping intervals, selecting the heat preservation temperature and the heat preservation time of the calcination program in the overlapping intervals when the heat preservation temperature interval and the heat preservation time interval both have overlapping intervals, and recommending the temperature rising rate of the calcination program according to the weight factors. The weight factor is, for example, a blending ratio of petroleum coke raw materials, that is, the system directly uses a heating rate corresponding to a main raw material (raw material with the largest proportion) as a recommended heating rate, and if the heating rate is a value in a heating rate interval, a value with a smaller difference from other raw materials can be selected as much as possible. Of course, the recommended value may be manually modified over time to change its range.
When the thermal insulation temperature interval and the thermal insulation time interval are different and overlap interval exists, only one of the three basic calcination parameters is actually matched, the real referenceability of the calcination program automatically recommended by the system is weakened, at the moment, the system can directly display the calcination program information of each petroleum coke raw material for manual selection or reference, a production manager can select one of the calcination programs of a certain petroleum coke raw material as a production execution program according to experience, or the parameters in the calcination programs from different petroleum coke raw materials can be combined into a new calcination program (the adjustment of the parameters can be matched) as a production execution program, or a new calcination program can be directly established as the production execution program.
In addition, the aforementioned means for controlling the resistivity and other important technical indexes such as sulfur content can be applied to the step S4 as a means for adjusting the calcination process.
The last step S6 of the invention is to test the resistivity performance of the calcined petroleum coke and judge whether the technical requirement is met.
Preferably, in this step S6, when the resistivity property satisfies the technical requirement, the currently executed calcination program which has not been confirmed as the default calcination program is added to the default calcination program list, and when the resistivity property does not satisfy the technical requirement, the calcination program needs to be adjusted and verified again. It should be noted that, the production manager may also manually adjust the calcination program just added to the default calcination program list and then perform production verification again, so that the best calcination program satisfying the technical requirements can be screened as far as possible.
In summary, the method for calcining the low-specific-resistance calcined petroleum coke provided by the embodiment of the invention establishes the relation between volatile matters and calcined resistivity by means of the production control system, realizes quick retrieval or recommendation of a calcining program, improves verification and production efficiency under the condition of ensuring that the calcined petroleum coke product has controllable low-specific-resistance performance, and reduces uncertain factors and cost in repeated production verification.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The calcining method of the low specific resistance calcined petroleum coke is characterized by comprising the following steps of:
s1, establishing a volatile information and calcination program information database of petroleum coke raw materials of each raw material batch, wherein the calcination program information at least comprises:
a. a multi-section heat preservation temperature interval;
b. a heat preservation time interval corresponding to the multi-section heat preservation temperature interval;
c. a temperature rise rate interval of each section;
s2, determining the matching proportion of different petroleum coke raw materials in production according to the volatile information of the petroleum coke raw materials in the step S1, judging whether a default calcining program exists in the current matching proportion, executing the step S5 if the default calcining program exists, and executing the step S3 if the default calcining program exists;
s3, the system reads overlapping intervals of calcination program information of different selected petroleum coke raw materials, when overlapping intervals exist among the heat preservation temperature interval, the heat preservation time interval and the heating rate interval, the step S5 is executed, and otherwise, the step S4 is executed;
s4, automatic adjustment and/or manual adjustment of the calcination program;
s5, the system selects a calcination program and executes a production program;
s6, checking the resistivity performance of the calcined petroleum coke, judging whether the resistivity performance meets the technical requirements, and adjusting the calcining procedure when the resistivity performance does not meet the technical requirements.
2. The method according to claim 1, wherein in step S1, the calcining procedure comprises at least one pre-sintering section and at least one final-sintering section in a multi-stage heat preservation.
3. The method according to claim 1, wherein in step S2, the default calcination procedure includes a plurality of default calcination procedures, and the system selects according to the priority order.
4. The method for calcining low-specific-resistance calcined petroleum coke according to claim 1, wherein in steps S3 and S5, when there is a coincidence zone in each of the heat-preserving temperature zone, the heat-preserving time zone, and the temperature-increasing rate zone, the system selects the median combination of each coincidence zone as a new calcining procedure, and executes the production procedure.
5. The method according to claim 1, wherein in step S4, the system automatically generates a recommended calcination program for manual selection and confirmation.
6. The method of calcining low specific resistance calcined petroleum coke according to claim 5 wherein the system generates the recommended calcination procedure by: judging whether the heat preservation temperature interval and the heat preservation time interval both have overlapping intervals, selecting the heat preservation temperature and the heat preservation time of the calcination program in the overlapping intervals when the heat preservation temperature interval and the heat preservation time interval both have overlapping intervals, and recommending the temperature rising rate of the calcination program according to the weight factors.
7. The method of calcining low specific resistance calcined petroleum coke according to claim 6, wherein said weight factor comprises the blending ratio of petroleum coke raw materials.
8. The method for calcining the low-specific resistance calcined petroleum coke according to claim 6, wherein when the heat preservation temperature interval and the heat preservation time interval are different, the system directly displays the calcining program information of each petroleum coke raw material for manual selection or reference.
9. The method according to claim 1, wherein in step S6, when the resistivity performance meets the specifications, the currently executed calcination program that has not been confirmed as the default calcination program is added to the default calcination program list.
10. The method for calcining low specific resistance calcined petroleum coke according to claim 9 wherein the production verification is performed again after the manual adjustment of the calcining program just added to the default calcining program list.
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| CN116007401A (en) * | 2022-12-13 | 2023-04-25 | 山东中阳新材料科技股份有限公司 | Automatic processor and method for coking of tank opening of calciner |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008089622A1 (en) * | 2007-01-18 | 2008-07-31 | Dawei Zhang | An equipment for the production of a semi-coke filter material |
| CN104059681A (en) * | 2014-06-24 | 2014-09-24 | 北京神雾环境能源科技集团股份有限公司 | Regenerative type combustion gas radiant tube revolving bed oil shale dry distillation method and shale slag utilization technology |
| CN109439353A (en) * | 2018-11-19 | 2019-03-08 | 山西中科化美科技有限责任公司 | A kind of coking calcining integration system of refined bitumen is for needle coke technique |
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