CN110797090A - Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method - Google Patents
Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method Download PDFInfo
- Publication number
- CN110797090A CN110797090A CN201910289393.5A CN201910289393A CN110797090A CN 110797090 A CN110797090 A CN 110797090A CN 201910289393 A CN201910289393 A CN 201910289393A CN 110797090 A CN110797090 A CN 110797090A
- Authority
- CN
- China
- Prior art keywords
- coal
- coke
- sulfur
- sulfur content
- coking
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 152
- 239000011593 sulfur Substances 0.000 title claims abstract description 150
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 150
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 239000000571 coke Substances 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000004939 coking Methods 0.000 title claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000002893 slag Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 241001122767 Theaceae Species 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000011335 coal coke Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 125000001741 organic sulfur group Chemical group 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- YALHCTUQSQRCSX-UHFFFAOYSA-N sulfane sulfuric acid Chemical compound S.OS(O)(=O)=O YALHCTUQSQRCSX-UHFFFAOYSA-N 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to a method for predicting sulfur content of coke, a method for predicting sulfur conversion rate of coal, a method for preparing blended coal and a coking method. The method can be used for measuring the volatile components of the coal and simultaneously performing a small coke oven coking test, so that the method is simple to operate, high in detection speed and more practical for enterprises with large coal variety changes.
Description
Technical Field
The invention relates to a method for predicting sulfur content of coke, a method for predicting sulfur conversion rate of coal, a method for preparing blended coal and a coking method.
Background
China has abundant coal resources, but high-quality coking coal resources are very limited, wherein low-sulfur coal resources are in short supply, and middle and western coal and coal in southern China are mainly medium-high sulfur coal. With the rapid development of the coking industry, the consumption of low-sulfur coal is increased, so that the reserves of the low-sulfur coal are less and less.
As one of the important indexes for measuring the quality of coke, the requirement on the sulfur content of coke is always strict, so that high-sulfur coal cannot be used in a large proportion. On the other hand, high-sulfur coal has obvious price advantage, and compared with low-sulfur coal, the price of the high-sulfur coal is generally lower by tens of yuan or even hundreds of yuan. If the coal blending cost can be effectively reduced by increasing the proportion of the high-sulfur coal under the premise of ensuring that the sulfur index of the coke is not changed.
Sulfur in coal can be classified into two major types, organic sulfur and inorganic sulfur, depending on its presence. Inorganic sulfur is further classified into pyrite sulfur and sulfate sulfur. During the coking process, most of sulfur in coal remains in the coke in the form of FeS and part of sulfur remains in the coke in the form of SO2And H2S, etc. form is discharged with the volatiles. The conversion rate of sulfur is the ratio of sulfur remaining in the coke to the sulfur in the coal during the coking process of the coal, and is generally 60-80% depending on the properties of the coal, the volatile matter and the content of sulfur in various forms, but the ratio is wide in range, and is not favorable for accurately predicting the sulfur content in the coke by using the value.
Although the sulfur content of part of high-sulfur coal is high, the conversion rate is low, namely, the sulfur content remained in the coke is low, and the standard exceeding of the sulfur content of the coke can not be caused. Therefore, the research on the conversion rate of the high-sulfur coal is of great significance for large-scale blending of the high-sulfur coal.
The methods for predicting the coal conversion rate or the coke sulfur content in the prior art mainly comprise the following steps:
CN107525882 describes a method for measuring the sulfur content, volatile component and mineral content of coal, and substituting them into formula S ═ 1.015S1-0.008V-0.158Z +0.222, method for obtaining sulfur content of coke (wherein S is predicted value of sulfur content of coke, S1Is the sulfur content of the coal, V is the dry ash-free base volatile content of the coal, and Z is the mineral content in the coal). The conversion rate of the coal can be obtained according to the sulfur content of the coke and the sulfur content of the coal. However, the mathematical formula is only a relational expression obtained by software multiple linear regression from data statistics of 26 coal types and cokes after coking. The method is only suitable for enterprises with little change of coal types, and cannot predict enterprises with big change of coal types.
CN106746866 introduces a method of using a small coke oven to coke single coal, then performing sulfur content detection on the obtained coke, and dividing the sulfur content of the coke by the sulfur content of the coal to obtain the sulfur conversion rate of the single coal. The method is practical and accurate in prediction, but a large number of small coke oven experiments are needed, the method is not suitable for a plurality of enterprises which are not provided with small coke ovens, and the small coke oven experiments have high cost and long period.
Disclosure of Invention
One object of the present invention is to provide a method for predicting the sulfur content of coke.
It is an object of the present invention to provide a method for predicting the sulfur conversion of coal.
Another object of the present invention is to provide a method for preparing blended coal.
It is a further object of the present invention to provide a method of coking.
According to one embodiment of the present invention, there is provided a method for predicting sulfur content of coke, the method comprising the steps of:
(1) determination of sulfur content S in coalm，
(2) Placing coal in a crucible, heating the crucible to a target temperature in a furnace in the absence of air to obtain the coke slag, wherein the target temperature is 940-960 ℃,
(3) determination of sulfur content S of coke slagjz，
(4) The coke slagSulfur fraction S ofjzSulfur S as cokes after cokingjt。
Sulfur content S in the coal in the step (1)mThe measurement can be carried out according to the method described in GB/T214-2007.
Preferably, the heating temperature in step (2) is 950 ℃. At the temperature, the sulfur content of the coke calculated through prediction is more consistent with the sulfur content of the coke prepared by an actual coke oven.
Preferably, the furnace in step (2) is preheated to the target temperature, and the furnace is returned to the target temperature within 2 minutes after the coal is put into the furnace. Through the process setting, the calculated result can be more consistent with the sulfur result of the actual coke.
Preferably, the heating time in step (2) is 5 to 9 minutes, and the amount of coal used is less than 3 g. If the time is less than 5 minutes, the reaction of S may be incomplete, resulting in inaccurate results, and if the time is more than 10 minutes, energy may be wasted due to long-term heating, resulting in inaccurate results.
Sulfur S of the coke breeze in the step (3)jzThe measurement can be carried out according to the method described in GB/T2286-2008.
According to one embodiment of the present invention, there is provided a method of predicting sulfur conversion of coal upon coking, the method comprising the steps of:
(1) determination of sulfur content S in coalm，
(2) Placing coal in a crucible, heating the crucible to a target temperature in a furnace in the absence of air to obtain the coke slag, wherein the target temperature is 940-960 ℃,
(3) determination of sulfur content S of coke slagjz，
(4) Substituting into a formula: sulfur conversion of coal Δ S ═ S sulfur in coke breezejzCoal sulfur fraction SmThereby obtaining the sulfur conversion rate Delta S of the coal,
(5) the sulfur conversion Δ S of the coal was used as the sulfur conversion of the coal during coking.
Sulfur content S in the coal in the step (1)mThe measurement can be carried out according to the method described in GB/T214-2007.
Preferably, the heating temperature in step (2) is 950 ℃. At the temperature, the sulfur conversion rate of the coal calculated by prediction is more accurate, and the results of the sulfur content of the coke residue and the sulfur content of the coke prepared by the coke oven are more consistent.
Preferably, the furnace in step (2) is preheated to the target temperature, and the furnace is returned to the target temperature within 2 minutes after the coal is put into the furnace. Through the process setting, the calculation result can be more consistent with the sulfur content and the conversion rate of the actual coke.
Preferably, the heating time in step (2) is 5 to 9 minutes, and the amount of coal used is less than 3 g. If the time is less than 5 minutes, the reaction of S may be incomplete, resulting in inaccurate results, and if the time is more than 10 minutes, energy may be wasted due to long-term heating, resulting in inaccurate results.
Sulfur S of the coke breeze in the step (3)jzThe measurement can be carried out according to the method described in GB/T2286-2008.
According to another embodiment of the present invention, there is provided a method of preparing blended coal, including:
(a) the sulfur content S of the coke residue of n kinds of coals used for preparing blended coals was calculated according to the steps (2) to (3) of the above methodjziWherein n is an integer of 2 or more, SjziRepresents the sulfur content of the coke residue of the i-th coal,
(b) according to the formula of the blended coal
Calculating the sulfur content S of the coke of the blended coal, wherein WiThe proportion of the ith coal in the blended coal,
(c) adjusting WiTo make a pass through a formula
The calculated sulfur content S of the coke is in the range of 0.6 to 1.0 percent,
(d) according to the obtained WiMixing various coals to obtain the blended coal.
In step (b) above, the formulation of the coal may be any formulation of the coal used, for example, a conventional formulation used in the prior art for preparing blended coal.
In accordance with another embodiment of the present invention, there is disclosed a method of coking comprising: and (4) coking by using the blended coal.
The invention refers to a volatile component determination method in coal industry analysis method (GB/T212-2008) to prepare the coke slag. The inventor of the invention finds that after the process adjustment of the invention, particularly under the heating temperature and the heating time of the invention, the volatile component measuring step of the coal can more accurately simulate the coking process of various coals and ensure that the coke residue sulfur can represent the sulfur content of the coke. Moreover, compared with the temperature of 900 ℃ in the national standard and the temperature of 1000 ℃ closer to the coking temperature, the result is more accurate.
Therefore, the method can be carried out while measuring the volatile components of the coal, and a small coke oven coking test is not required to be additionally carried out, so the method is simple to operate, high in detection speed and more practical for enterprises with large coal variety changes.
Detailed Description
To make the features and effects of the present invention comprehensible to those having ordinary knowledge in the art, general description and definitions are made with respect to terms and phrases mentioned in the specification and claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In this document, the terms "comprising," "including," "having," "containing," or any other similar term, are intended to be open-ended franslational phrase (open-ended franslational phrase) and are intended to cover non-exclusive inclusions. For example, a composition or article comprising a plurality of elements is not limited to only those elements recited herein, but may include other elements not expressly listed but generally inherent to such composition or article. In addition, unless expressly stated to the contrary, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". For example, the condition "a or B" is satisfied in any of the following cases: a is true (or present) and B is false (or not present), a is false (or not present) and B is true (or present), both a and B are true (or present). Furthermore, in this document, the terms "comprising," including, "" having, "" containing, "and" containing "are to be construed as specifically disclosed and to cover both closed and semi-closed conjunctions, such as" consisting of … "and" consisting essentially of ….
All features or conditions defined herein as numerical ranges or percentage ranges are for brevity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to have covered and specifically disclosed all possible subranges and individual numerical values within the ranges, particularly integer numerical values. For example, a description of a range of "1 to 8" should be considered to have specifically disclosed all subranges such as 1 to 7, 2 to 8, 2 to 6, 3 to 6, 4 to 8, 3 to 8, and so on, particularly subranges bounded by all integer values, and should be considered to have specifically disclosed individual values such as 1, 2, 3, 4, 5, 6, 7, 8, and so on, within the range. Unless otherwise indicated, the foregoing explanatory methods apply to all matters contained in the entire disclosure, whether broad or not.
If an amount or other value or parameter is expressed as a range, preferred range, or a list of upper and lower limits, it is to be understood that all ranges subsumed therein for any pair of that range's upper or preferred value and that range's lower or preferred value, whether or not such ranges are separately disclosed, are specifically disclosed herein. Further, when a range of numerical values is recited herein, unless otherwise stated, the range is intended to include the endpoints thereof, and all integers and fractions within the range.
In this context, numerical values should be understood to have the precision of the number of significant digits of the value, provided that the object of the invention is achieved. For example, the number 40.0 should be understood to cover a range from 39.50 to 40.49.
In this document, where Markush group (Markush group) or Option language is used to describe features or examples of the invention, it will be understood by those skilled in the art that a sub-group of all elements or any individual element within a Markush group or Option list may also be used to describe the inventionThe invention relates to a method for preparing a high-temperature-resistant ceramic material. For example, if X is described as "selected from the group consisting of1、X2And X3The group "also indicates that X has been fully described as X1Is claimed with X1And/or X2Claim (5). Furthermore, where Markush group or option terms are used to describe features or examples of the invention, those skilled in the art will recognize that any combination of sub-groups of all elements or individual elements within the Markush group or option list can also be used to describe the invention. Accordingly, for example, if X is described as "selected from the group consisting of1、X2And X3Group consisting of "and Y is described as" selected from Y1、Y2And Y3The group "formed indicates that X has been fully described as X1Or X2Or X3And Y is Y1Or Y2Or Y3Claim (5).
The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application thereof. Furthermore, there is no intention to be bound by any theory presented in the preceding prior art or the summary of the invention or the following detailed description or examples.
Examples
Example 1
The sulfur content S in coal of different types from different mining points is calculated according to the following stepsmSulfur content S of the coke slagjz：
(1) The sulfur content in the coal was measured according to method for measuring total sulfur in coal (GB/T214-2007):
(2) referring to a volatile component determination method in the coal industry analysis method (GB/T212-2008), coke slag is prepared, the coke slag is pre-burned to a porcelain crucible with a cover with a constant mass at 950 ℃, a common analysis test coal sample (1 +/-0.01) g with the granularity of less than 0.2mm is weighed, then the crucible is lightly vibrated to flatten the coal sample, the cover is covered, and the coal sample is placed on a crucible frame (lignite and long flame coal should be pre-pressed into cakes and cut into small blocks with the width of about 3 mm). The muffle furnace was preheated to about 950 ℃. And opening the furnace door, quickly sending the crucible frame with the crucible into a constant temperature area, immediately closing the furnace door, timing, and correctly heating for 7 min. After the crucible and the crucible frame are placed, the furnace temperature is required to be recovered to (950 +/-10) DEG C within 3min, otherwise, the test is abandoned. The heating time includes the temperature recovery time. Taking out the crucible from the furnace, cooling in air for about 5min, transferring into a drier, and cooling to room temperature (about 20min) to obtain the coke residue.
(3) And (3) determining the sulfur content of the coke slag according to a determination method of the total sulfur content of the coke (GB/T2286-2008):
(4) substituting into a formula: sulfur conversion of coal Δ S ═ S sulfur in coke breezejzCoal sulfur fraction Sm
(5) Substituting into a formula:
wherein S is the sulfur content of the coke obtained by coking with the blended coal;
Withe ratio of the ith coal is;
Sjzithe sulfur content of the i-th coal coke residue;
the coals used, and the results of the tests or calculations are listed in table 1 below:
TABLE 1
| Mine site | Coal kind | Sm(％) | Sjz(％) | ΔS1(％) |
| Shenmu (magic wood) | Non-caking coal | 0.24 | 0.24 | 100.0 |
| Inner cover | Gas coal | 1.65 | 1.36 | 82.4 |
| Huge tower | High sulfur 1/3 coking coal | 1.82 | 1.43 | 78.6 |
| Dongpong (Dongpeng) | Low sulfur 1/3 coking coal | 0.31 | 0.27 | 87.1 |
| nine-Dragon | Low sulfur fat coal | 0.47 | 0.43 | 91.5 |
| Mesomnia thunbergii Turcz | Medium sulphur fat coal | 1.26 | 0.98 | 77.8 |
| Mountain coal | High-sulfur fertilizer coal | 1.75 | 1.62 | 92.6 |
| Making into a river | High-sulfur fertilizer coal | 1.71 | 1.45 | 84.8 |
| Xipom mine | High-sulfur rich coal | 1.89 | 1.45 | 76.7 |
| Fenyang | Middle sulfur coking coal | 1.30 | 1.13 | 86.9 |
| Pink slope | Middle sulfur coking coal | 1.25 | 1.02 | 81.6 |
| Shenyang (Shenyang) | Lean coal with sulphur | 1.10 | 0.98 | 89.1 |
| Wangjialing tea | Low sulfur lean coal | 0.39 | 0.35 | 89.7 |
The sulfur content of the coke obtained by coking the coals of different kinds from different sites by the iron box test was measured, and the sulfur conversion was calculated, and the results are shown in the following Table 2, wherein S ismDenotes the coal sulfur content, SjtRepresents the sulfur content of coke.
TABLE 2
| Mine site | Coal kind | Sm(％) | Sjt(％) | ΔS2(％) |
| Shenmu (magic wood) | Non-caking coal | 0.24 | 0.24 | 100.0 |
| Inner cover | Gas coal | 1.65 | 1.35 | 81.8 |
| Huge tower | High sulfur 1/3 coking coal | 1.82 | 1.45 | 79.7 |
| Dongpong (Dongpeng) | Low sulfur 1/3 coking coal | 0.31 | 0.28 | 90.3 |
| nine-Dragon | Low sulfur fat coal | 0.47 | 0.43 | 91.5 |
| Mesomnia thunbergii Turcz | Medium sulphur fat coal | 1.26 | 0.95 | 75.4 |
| Mountain coal | High-sulfur fertilizer coal | 1.75 | 1.61 | 92.0 |
| Making into a river | High-sulfur fertilizer coal | 1.71 | 1.46 | 85.4 |
| Western PangMine | High-sulfur rich coal | 1.89 | 1.45 | 76.7 |
| Fenyang | Middle sulfur coking coal | 1.30 | 1.14 | 87.7 |
| Pink slope | Middle sulfur coking coal | 1.25 | 1.01 | 80.8 |
| Shenyang (Shenyang) | Lean coal with sulphur | 1.10 | 0.99 | 90.0 |
| Wangjialing tea | Low sulfur lean coal | 0.39 | 0.36 | 92.3 |
The sulfur conversion calculated by the method of the present invention was compared with the results actually obtained by coking using the iron box test (coking center temperature 1000 ℃), and the results are shown in the following table 3:
TABLE 3
By comparing the sulfur content of the coke residue with the sulfur content of the coke, the sulfur content of the coke residue and the sulfur content of the coke are basically close to each other, the average deviation is 0.01 percent, the maximum deviation is 0.03 percent, and the average deviation of the sulfur conversion rate of the coke residue and the sulfur conversion rate of the coke is 1.05 percent.
The results of predicting the sulfur content of cokes prepared from coals with different proportions according to the sulfur content of the single coal coke residues by the method of the invention and the results of detecting the sulfur content of the cokes in actual production are listed in the following table 4:
TABLE 4
As can be seen from the results in Table 4, the results of the sulfur content of the coke calculated by the method of the present invention are in good agreement with the results of the actual production tests.
Comparative example 1
The results of obtaining different coke breeze, the sulfur content of the coke breeze and the sulfur content of the coke actually obtained by the coke oven test coking (coking center temperature 1000 ℃ C.) are shown in the following Table 5 (the coal species are the same as those in tables 1 to 4, and are omitted from Table 5) except that the temperatures of 900 ℃, 920 ℃, 940 ℃, 960 ℃, 980 ℃ and 1000 ℃ are measured, respectively, instead of 950 ℃ in the same manner as in example 1, respectivelyjz1To Sjz6The temperatures are 900 ℃, 920 ℃, 940 ℃, 960 ℃, 980 ℃ and 1000 ℃, respectively.
TABLE 5
| Mine site | Sjt(％) | Sjz1(％) | Sjz2(％) | Sjz3(％) | Sjz4(％) | Sjz5(％) | Sjz6(％) |
| Shenmu (magic wood) | 0.24 | 0.26 | 0.24 | 0.23 | 0.24 | 0.29 | 0.26 |
| Inner cover | 1.35 | 1.31 | 1.33 | 1.33 | 1.34 | 1.36 | 1.36 |
| Huge tower | 1.45 | 1.47 | 1.46 | 1.46 | 1.45 | 1.43 | 1.51 |
| Dongpong (Dongpeng) | 0.28 | 0.30 | 0.30 | 0.29 | 0.27 | 0.28 | 0.29 |
| nine-Dragon | 0.43 | 0.42 | 0.40 | 0.43 | 0.43 | 0.42 | 0.43 |
| Mesomnia thunbergii Turcz | 0.95 | 0.98 | 0.95 | 0.95 | 0.96 | 0.97 | 0.97 |
| Mountain coal | 1.61 | 1.58 | 1.59 | 1.60 | 1.61 | 1.63 | 1.62 |
| Making into a river | 1.46 | 1.45 | 1.42 | 1.47 | 1.46 | 1.42 | 1.50 |
| Xipom mine | 1.45 | 1.42 | 1.41 | 1.43 | 1.44 | 1.47 | 1.46 |
| Fenyang | 1.14 | 1.15 | 1.09 | 1.14 | 1.15 | 1.16 | 1.17 |
| Pink slope | 1.01 | 1.03 | 0.99 | 1.02 | 1.00 | 1.02 | 0.98 |
| Shenyang (Shenyang) | 0.99 | 0.95 | 1.02 | 1.01 | 1.01 | 0.97 | 0.96 |
| Wangjialing tea | 0.36 | 0.38 | 0.39 | 0.36 | 0.35 | 0.33 | 0.40 |
As can be seen from the experimental results in Table 5 above, the sulfur content of the char residue prepared at the temperature of 940-. Although 980 ℃ and 1000 ℃ are closer to the actual coking temperature, the sulfur content of the prepared coke slag is deviated from the sulfur content obtained by actual coking more than that of 940-960 ℃.
Comparative example 2
The results of obtaining different coke breeze with respect to sulfur content of the coke breeze and sulfur content of the coke actually obtained by the coke oven test coking (1000 ℃ C. in the coking center temperature) as shown in Table 6 below (coal types are the same as those in tables 1 to 4 and are omitted from Table 6) are shown in the same manner as in example 1 except that the detection is carried out by heating for 3 minutes, 5 minutes, 9 minutes and 11 minutes, respectively, instead of 7 minutesjz7To Sjz10The time periods were 3 minutes, 5 minutes, 9 minutes, and 11 minutes, respectively.
TABLE 6
| Mine site | Sjt(％) | Sjz7(％) | Sjz8(％) | Sjz9(％) | Sjz10(％) |
| Shenmu (magic wood) | 0.24 | 0.26 | 0.24 | 0.25 | 0.24 |
| Inner cover | 1.35 | 1.38 | 1.35 | 1.34 | 1.32 |
| Huge tower | 1.45 | 1.50 | 1.46 | 1.44 | 1.45 |
| Dongpong (Dongpeng) | 0.28 | 0.28 | 0.27 | 0.28 | 0.24 |
| nine-Dragon | 0.43 | 0.44 | 0.42 | 0.42 | 0.41 |
| Mesomnia thunbergii Turcz | 0.95 | 0.99 | 0.98 | 0.96 | 0.95 |
| Mountain coal | 1.61 | 1.62 | 1.62 | 1.61 | 1.60 |
| Making into a river | 1.46 | 1.48 | 1.47 | 1.45 | 1.45 |
| Xipom mine | 1.45 | 1.48 | 1.47 | 1.46 | 1.45 |
| Fenyang | 1.14 | 1.21 | 1.18 | 1.15 | 1.13 |
| Pink slope | 1.01 | 1.10 | 1.07 | 1.02 | 1.02 |
| Shenyang (Shenyang) | 0.99 | 1.08 | 1.06 | 1.01 | 1.00 |
| Wangjialing tea | 0.36 | 0.40 | 0.38 | 0.37 | 0.36 |
As can be seen from the above experimental results in Table 6, the sulfur content of the coke residue produced at the heating temperature of 5 to 11 minutes corresponded best to the sulfur content of the coke obtained by actual coking. However, when the heating time exceeded 9 minutes, the results for most of the coal products had not changed much, and further deviation in the content of low-sulfur 1/3 coke coal from east colossal ore occurred.
Claims (10)
1. A method for predicting sulfur content of coke, comprising the steps of:
(1) determination of sulfur content S in coalm，
(2) Placing coal in a crucible, heating the crucible to a target temperature in a furnace in the absence of air to obtain the coke slag, wherein the target temperature is 940-960 ℃,
(3) determination of sulfur content S of coke slagjz，
(4) The sulfur content S of the coke slagjzSulfur S as cokes after cokingjt。
2. A method of predicting sulfur conversion of coal, the method comprising the steps of:
(1) determination of sulfur content S in coalm，
(2) Placing coal in a crucible, heating the crucible to a target temperature in a furnace in the absence of air to obtain the coke slag, wherein the target temperature is 940-960 ℃,
(3) determination of sulfur content S of coke slagjz，
(4) Substituting into a formula: sulfur conversion of coal Δ S ═ S sulfur in coke breezejzCoal sulfur fraction SmThereby obtaining the sulfur conversion rate Delta S of the coal,
(5) the sulfur conversion Δ S of the coal was used as the sulfur conversion of the coal during coking.
3. The method of claim 1, wherein,
the heating temperature in step (2) was 950 ℃.
4. The method of claim 1, wherein,
the furnace in step (2) was preheated to the target temperature, and the furnace was returned to the target temperature within 2 minutes after the coal was put.
5. The method of claim 1, wherein,
the heating time in the step (2) is 5-9 minutes, and the coal consumption is less than 3 g.
6. A method of preparing blended coal, the method comprising:
(a) the method of claim 1, wherein the method comprises the steps (2) to (3) of calculating the S content of the coke breeze of the n types of coal used for preparing the blended coaljziWherein n is an integer of 2 or more, SjziRepresents the sulfur content of the coke residue of the i-th coal,
(b) according to the formula of the blended coal
Calculating the sulfur content S of the coke of the blended coal, wherein WiThe proportion of the ith coal in the blended coal,
(c) by adjusting WiTo make a pass through a formula
The calculated sulfur content S of the coke is in the range of 0.6 to 1.0 percent,
(d) according to the obtained WiMixing various coals to obtain the blended coal.
7. The method of claim 6, wherein,
the heating temperature in step (a1) was 950 ℃.
8. The method of claim 1, wherein,
the furnace in step (a1) was preheated to the target temperature, and the furnace returned to the target temperature within 2 minutes after the coal was put in.
9. The method of claim 1, wherein,
the heating time in step (a1) was 5-9 minutes and the coal was less than 3 g.
10. A method of coking comprising:
coking with blended coal prepared according to the method described in claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289393.5A CN110797090A (en) | 2019-04-11 | 2019-04-11 | Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289393.5A CN110797090A (en) | 2019-04-11 | 2019-04-11 | Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110797090A true CN110797090A (en) | 2020-02-14 |
Family
ID=69426872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910289393.5A Pending CN110797090A (en) | 2019-04-11 | 2019-04-11 | Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110797090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044385A (en) * | 2022-07-15 | 2022-09-13 | 河北中煤旭阳能源有限公司 | Method for producing low-sulfur coke by using ultra-high-sulfur gas-fat coal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370201A (en) * | 1981-06-23 | 1983-01-25 | United States Steel Corporation | Process for maintaining coal proportions in a coal blend |
| CN101134900A (en) * | 2007-10-18 | 2008-03-05 | 山西太钢不锈钢股份有限公司 | Coke coal blending ratio and coking method thereof |
| CN101447001A (en) * | 2008-12-05 | 2009-06-03 | 中唯炼焦技术国家工程研究中心有限责任公司 | Method for predicting sulfur content in coke |
| CN102746866A (en) * | 2012-06-21 | 2012-10-24 | 徐州伟天化工有限公司 | Accurate prediction method of sulfur content in coke in coal blending for coking |
| CN106190209A (en) * | 2016-07-07 | 2016-12-07 | 首钢总公司 | A kind of predict that mixed coal smelts the method for sulphur content in coke |
| JP2018048262A (en) * | 2016-09-21 | 2018-03-29 | 新日鐵住金株式会社 | Estimation method of coke grain size |
-
2019
- 2019-04-11 CN CN201910289393.5A patent/CN110797090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370201A (en) * | 1981-06-23 | 1983-01-25 | United States Steel Corporation | Process for maintaining coal proportions in a coal blend |
| CN101134900A (en) * | 2007-10-18 | 2008-03-05 | 山西太钢不锈钢股份有限公司 | Coke coal blending ratio and coking method thereof |
| CN101447001A (en) * | 2008-12-05 | 2009-06-03 | 中唯炼焦技术国家工程研究中心有限责任公司 | Method for predicting sulfur content in coke |
| CN102746866A (en) * | 2012-06-21 | 2012-10-24 | 徐州伟天化工有限公司 | Accurate prediction method of sulfur content in coke in coal blending for coking |
| CN106190209A (en) * | 2016-07-07 | 2016-12-07 | 首钢总公司 | A kind of predict that mixed coal smelts the method for sulphur content in coke |
| JP2018048262A (en) * | 2016-09-21 | 2018-03-29 | 新日鐵住金株式会社 | Estimation method of coke grain size |
Non-Patent Citations (4)
| Title |
|---|
| 中国化工节能技术协会 编写: "《中国石油和化工行业节能政策与标准》", 30 April 2011, 航空工业出版社 * |
| 商业部燃料局 编写: "《煤炭商品检验基础知识》", 31 July 1981, 中国商业出版社 * |
| 薛改凤 等: "单种炼焦煤质量对配煤质量的影响", 《煤炭科学技术》 * |
| 郝琦玮 等: "对结焦过程中硫分转化率的探讨", 《河北煤炭》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044385A (en) * | 2022-07-15 | 2022-09-13 | 河北中煤旭阳能源有限公司 | Method for producing low-sulfur coke by using ultra-high-sulfur gas-fat coal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102559227B (en) | Method for coal blending coking through utilizing Gieseler fluidity index | |
| CN104140834B (en) | Based on the coking coal divided method of coking property and the application in coal blending | |
| CN103275740A (en) | Evaluation method of fat coal quality | |
| CN108931549B (en) | Coking coal coking performance detection method | |
| CN101447001B (en) | Method for predicting sulfur content in coke | |
| Díaz-Faes et al. | Applying TGA parameters in coke quality prediction models | |
| Nomura et al. | Effect of coke contraction on mean coke size | |
| CN107808019B (en) | Method and system for establishing oil shale in-situ conversion temperature, time and conversion rate chart | |
| CN110797090A (en) | Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method | |
| Diaz-Faes et al. | Characterization of different origin coking coals and their blends by Gieseler plasticity and TGA | |
| Xing et al. | Thermogravimetric analysis and kinetics of mixed combustion of waste plastics and semicoke | |
| Li et al. | Characterization of high-temperature rapid char oxidation of raw and torrefied biomass fuels | |
| CN103760053B (en) | A kind of raw material evaluation method instructing needle coke coking production | |
| CN106190209B (en) | A method of prediction mixed coal smelts sulphur content in coke | |
| MacPhee et al. | Small scale determination of metallurgical coke CSR | |
| CN107525882B (en) | A method of prediction sulfur content in coke | |
| CN112098263B (en) | Method for parameter comprehensive prediction of coke thermal strength model | |
| CN113736502A (en) | Method for carrying out coal blending and coking experiment by using industrial coke oven | |
| CN104268646B (en) | The method that coke CSR models are predicted by coking coal MCI | |
| Wei et al. | Numerical simulation investigation of pyrolysis characteristics, bubble evolution and CRI reduction mechanism under the hot tamping coking condition | |
| Liu et al. | Coal blend properties and evaluation on the quality of stamp charging coke from weakly coking blends | |
| JP6048087B2 (en) | Method for estimating ratio of organic sulfur in coke, method for estimating ratio of total sulfur in coke, method for blending coal for coke production, and method for producing coke | |
| CN105062532B (en) | Coal blending method for controlling coke quality | |
| CN103294870B (en) | Set up the method for coking coal ash content STRENGTH ON COKE Effect of Thermal Performance model | |
| Foosnæs et al. | Measurement and control of the calcining level in anode baking furnaces |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200214 |
|
| RJ01 | Rejection of invention patent application after publication |