CN112322315B - Sulfur component directional removal method for coking by high-sulfur coking coal blending - Google Patents
Sulfur component directional removal method for coking by high-sulfur coking coal blending Download PDFInfo
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Abstract
The invention relates to a sulfur content directional removal method for coking of high-sulfur coking coal blending, which is characterized in that hydrogen supply additives with the mass of 25-50 wt% are added into high-sulfur coking coal, 5-15 wt% of low-sulfur coking coal in coking basic blending coal is replaced by the high-sulfur coking coal added with the hydrogen supply additives and other qualities to obtain modified coking blending coal combined by the hydrogen supply additives, the high-sulfur coking coal and the coking basic blending coal for coking, hydrogen-rich active groups generated by decomposition of the hydrogen supply additives in the coking process are utilized for in-situ internal hydrogen supply, so that more sulfur in the modified coking blending coal is released in a sulfur-containing gas mode, the sulfur content in coke is reduced, on the premise of ensuring the quality of the coke, inferior high-sulfur coking coal resources are reasonably utilized, high-quality scarce coking coal resources are saved, and the production cost of the coke is reduced.
Description
Technical Field
The invention belongs to the technical field of coal blending coking, relates to a method for performing coal blending coking by using high-sulfur coking coal, and particularly relates to a method for directionally removing sulfur components during coal blending coking by using the high-sulfur coking coal.
Background
The found storage capacity of coking coal in China is about 2758.60 hundred million tons, which is not one third of the total storage capacity of coal in China, and the distribution is extremely unbalanced, and the method is mainly concentrated in the northern region. The resource reserve of the coking coal in Shanxi province has great advantages, is the largest coking coal production base in China, and finds out that the reserve accounts for more than half of the total reserve of the coking coal in China.
Particularly, according to the distribution of various coal types in coking coal, the most abundant reserves in the coking coal in China are gas coal and 1/3 coking coal, which account for 45.73 percent of the found reserves of the coking coal, and the second reserves are coking coal and lean coal, which account for 12.81 percent of the fewest reserves of fat coal resources.
It can be seen that the coking coals include medium and high-volatile and strongly caking coals such as coking coals, fat coals, and 1/3 coking coals, which are coking base coals, and are not abundant in reserves. In addition, in the ascertained reserves of all coking coals, about half of the fat coal, the coking coal and the lean coal are high-sulfur coal, and the high-quality coking coal resources are relatively short in the whole.
In addition, because of annual exploitation and utilization, shallow layer high-quality coking coal resources are greatly exploited, so that the high-quality coking coal resources are more scarce nowadays. From the coal quality, the overall quality of coking coal is in a descending trend, and high-sulfur coking coal, especially some high-sulfur main coking coal rich in organic sulfur, gradually becomes a main part of resources, so that higher requirements are provided for coal quality management and coal blending coking in the coking industry.
The sulfur content is one of the main index parameters for measuring the quality of the coke, and the economic benefit of coking enterprises is directly influenced by the sulfur content in the coke. Therefore, the high-sulfur coking coal with relatively rich reserves in China is severely limited in price and application based on the characteristics of intrinsic endowments.
According to the standard of metallurgical coal quality rising sticking water, excluding the influence of market factors and other quality indexes, the coking coal with 2.01-2.50% of sulfur content is more expensive than the standard coking coal (S is more than or equal to 0.81%)t,dLess than or equal to 1.00 percent) and less than 150 yuan/ton. Under the condition that other coal quality indexes are the same, 1% of high-sulfur coking coal with the sulfur content of 2.01-2.50% is added in the coking coal blending to replace standard coking coal, so that the cost of the coal as fired is reduced by 1.5 yuan/ton, and the cost of the coke production is reduced by 1.87 yuan/ton according to the conversion of 0.8 ton of coke produced by each ton of coal as fired.
In recent years, price difference between high-sulfur coke and fat coal and high-quality coke and fat coal is more prominent along with the low grade of coal market, and the price difference is far higher than the standard promotion value. Therefore, if the sulfur in the high-sulfur coking coal, particularly the high-sulfur coke and fat coal rich in organic sulfur can be directionally removed, the sulfur is released in a gas form in the coking process more, the sulfur content of the coke is reduced, the coke production cost can be effectively reduced while the utilization value of the high-sulfur coke and the fat coal is improved, the economic benefit of a coking enterprise is increased, the rapid transformation and upgrading of the coking enterprise are facilitated, and the method has strong practical significance and application prospect.
Inorganic sulfur in coal can be pre-removed by physical methods such as flotation, while organic sulfur in coal is mainly accompanied with organic matters in coal, and particularly stable organic sulfur is difficult to remove. Some chemical and biological pre-desulfurization methods can remove part of organic sulfur, but can change the organic structure in coal to destroy the coking property, so that the removal of organic sulfur in coal by pre-desulfurization treatment is difficult.
Organic sulfur undergoes new partitioning and migration with the release of volatiles during the pyrolysis of coal. Some of the organic sulfur will generate small molecule sulfur-containing gas to be released during pyrolysis or form larger structure sulfur-containing compounds to be distributed into tar, and the rest form sulfur will be retained in the coke. If the change of sulfur content can be directionally regulated and controlled in the coal pyrolysis process, the sulfur content is more transferred to gas-phase or liquid-phase products in the coking process, and the retention rate of the sulfur content in the coke is reduced, the proportion of high-sulfur coking coal in coal blending coking can be properly increased, the utilization value of the high-sulfur coking coal is improved, and the production cost of the coke is further reduced.
Therefore, on the premise of considering the coking property of the high-sulfur coking coal, the directional removal of sulfur in the coking process is the only way for increasing the proportion of the high-sulfur coking coal in the coking coal blending and realizing the efficient utilization of the high-sulfur coking coal.
However, in the process of single coking or coal blending coking of the high-sulfur coking coal, the active hydrogen required for generating sulfur-containing gas by morphological sulfur decomposition and active sulfur conversion is not matched with the amount of active hydrogen generated by thermal decomposition of the coking coal, so that the problem that the sulfur cannot be directionally removed still exists in the current high-sulfur coal blending process.
Disclosure of Invention
The invention aims to provide a method for directionally removing sulfur components in the coking process of high-sulfur coking coal blending, which realizes the directional removal of sulfur components in the coking process of high-sulfur coking coal blending by adding a hydrogen supply additive into the high-sulfur coking coal, thereby achieving the purpose of reducing the sulfur content of coke.
The method for directionally removing sulfur components in the coking of the high-sulfur coking coal blended coal comprises the steps of adding a hydrogen supply additive with the mass of 25-50 wt% into the high-sulfur coking coal, replacing 5-15 wt% of low-sulfur coking coal in coking basic blended coal with the mass of the high-sulfur coking coal added with the hydrogen supply additive and the like to obtain modified coking blended coal combined by the hydrogen supply additive, the high-sulfur coking coal and the coking basic blended coal for coking, and carrying out in-situ internal hydrogen supply by utilizing hydrogen-rich active groups generated by decomposition of the hydrogen supply additive in the coking process, so that more sulfur in the modified coking blended coal is released in a sulfur-containing gas mode, and the sulfur content in the coke is reduced.
In the method for directionally removing sulfur components, the high-sulfur coking coal used for replacing low-sulfur coking coal in coking basic coal blending specifically refers to one or more of high-sulfur-content gas coal, fat coal, coking coal or lean coal. The sulfur content of the high-sulfur coking coal is 1.5-3 wt%, the organic sulfur content accounts for more than or equal to 65% of the total sulfur, and other coal quality indexes are close to the indexes of the low-sulfur coking coal in the substituted coking basic coal blending.
The hydrogen supply additive is formed by mixing 45-60 wt% of low-ash low-sulfur high-volatile regulator and 40-55 wt% of primary additive, wherein the low-ash low-sulfur high-volatile regulator is obtained by pretreating one or more high-volatile coals, the particle size of the low-ash low-sulfur high-volatile regulator is less than or equal to 2mm, the active component content of the low-ash low-sulfur high-volatile regulator is more than or equal to 70wt%, and the volatile component V isdafNot less than 30wt% of sulfur St,dNot more than 0.7wt%, ash content AdLess than or equal to 7wt% of coal powder, wherein the primary additive is a liquid consisting of 10-30 wt% of waste lubricating oil and/or lubricating oil base oil, 20-40 wt% of silicone oil, 5-25 wt% of anionic emulsifier and 5-25 wt% of water.
Specifically, the high volatile coal can be one of long flame coal, non-caking coal, weakly caking coal, 1/2 medium caking coal, gas coal, or a mixture of several kinds of coal.
The waste lubricating oil is used for removing mechanical impurities after being used for lubricating, cooling, preventing corrosion, reducing friction, preventing rust and the like of mechanical equipment, vehicles and instruments, or is mixed oil of several kinds of waste lubricating oil.
Further, in the present invention, the whole of the used lubricating oil may be replaced with a lubricating base oil, or a mixed component of a lubricating base oil and a part of the used lubricating oil may be added to the used lubricating oil.
Specifically, the silicone oil may be any one of methyl silicone oil, methyl hydrogen-containing silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen-containing silicone oil, and hydroxyl hydrogen-containing silicone oil, or a mixture of several kinds of them in any proportion.
More specifically, the anionic emulsifier is preferably a sulfonate anionic emulsifier.
Further, the sulfonate-based anionic emulsifier of the present invention includes, but is not limited to, any one of alkyl benzene sulfonate, α -olefin sulfonate, alkyl sulfonate, α -sulfo monocarboxylic acid ester, fatty acid sulfoalkyl ester, succinate sulfonate, alkyl naphthalene sulfonate, petroleum sulfonate, lignosulfonate, alkyl glyceryl ether sulfonate, and the like.
The method for directionally removing sulfur components in the coking of the high-sulfur coking coal blending coal comprises the steps of combining a hydrogen supply additive, the high-sulfur coking coal and coking basic blending coal into modified coking blending coal for coking, carrying out in-situ internal hydrogen supply by using a low-ash low-sulfur high-volatile component regulating agent in the hydrogen supply additive and a hydrogen-rich active group generated by decomposition of silicone oil in the coking process, and inducing C-S bonds in the activated high-sulfur coking coal to break and pyrolyzing to generate more active sulfur groups to promote decomposition of organic sulfur in the coking process of the high-sulfur coking coal and other coking blending coals on the one hand; on the other hand, a sufficient hydrogen source is provided for active sulfur groups generated by pyrolysis of the high-sulfur coking coal in a high-temperature region, and the distribution amount of sulfur in the coke oven gas and the coke is directionally regulated and controlled, so that more sulfur in the coal is released in the form of sulfur-containing gas, thereby realizing the directional removal of the sulfur in the coal blending coking process of the high-sulfur coking coal rich in organic sulfur by the hydrogen supply additive, and achieving the purpose of reducing the sulfur content in the coke.
Furthermore, the waste lubricating oil and/or lubricating oil base oil and the anionic emulsifier in the hydrogen supply additive can reduce the problem of coal surface oxidation caused in the coal transportation and matching process, and can better combine coal particles of the modified coking coal blending and coal particles and silicone oil, so that the fluidity of the modified coking coal blending is enhanced, the bulk density of the modified coking coal blending is improved, the low-ash low-sulfur high-volatile component regulating agent, the silicone oil, the high-sulfur coking coal and other coking basic coal blending have better interaction, and the hydrogen supply additive has a positive effect on the improvement of coke strength.
The method for directionally removing the sulfur components in the coking of the high-sulfur coking coal blending can reasonably and efficiently utilize inferior high-sulfur coking coal and other non-coking coal resources including waste lubricating oil in the coking process on the premise of ensuring the quality of coke, thereby saving high-quality scarce coking coal resources, expanding the utilization range of the coking coal resources, reducing the coal blending cost, reducing the production cost of the coke to a greater extent, and improving the economic benefit and market competitiveness of coking enterprises.
Detailed Description
The following examples further describe embodiments of the present invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and do not limit the scope of the present invention. Various changes, modifications, substitutions and alterations to these embodiments will be apparent to those skilled in the art without departing from the principles and spirit of this invention.
Example 1.
The coal quality analysis index of a high-sulfur coking coal in certain place of China is shown in Table 1. Wherein S iss,d、Sp,dAnd So,dRespectively representing the sulfate sulfur content, the pyrite sulfur content and the organic sulfur content in the coal.
The high-sulfur coking coal was subjected to a separate coking test at a final coking temperature of 1000 ℃. The sulfur-containing gas generated in the coking process is analyzed on line through an on-line mass spectrum to determine H2And S, a releasing temperature zone, and calculating the desulfurization rate in the coking process and the sulfur content of the finally obtained coke. Specific results are shown in table 1.
Selecting a series of high-volatile coal, screening, floating and grading to obtain low-ash low-sulfur high-volatile coal powder, making individual coking and defining hydrogen-containing gas release temperature zone to preferably obtain a low-ash low-sulfur CH4Low ash and low sulfur with wide release temperature zoneHigh volatile regulator.
Table 2 shows the quality index and individual coking property index of 3 types of low-ash low-sulfur high-volatile coal powders after sieving, flotation and classification, wherein the individual coking property index is obtained from a small coke oven coking test of the high-volatile coal, and the final temperature of the coking test is 1000 ℃.
By comparing the coking characteristic indexes of the low-ash low-sulfur high-volatile coal powder with the H of the high-sulfur coking coal in the table 12The S release temperature region is matched to preferably select low-ash low-sulfur CH4The release temperature zone is wider and is in contact with the high-sulfur coking coal H2HV-3 with more overlapped S release temperature zones and higher desulfurization rate is used as a low-ash low-sulfur high-volatile regulator of the selected high-sulfur coking coal.
Secondly, weighing 25kg of waste internal combustion engine oil, 35kg of methyl silicone oil and 25kg of sodium dodecyl benzene sulfonate, adding the weighed materials into 15kg of water, and fully stirring and uniformly mixing to obtain the primary additive A.
And (3) uniformly spraying 40kg of the primary additive A into 60kg of the screened low-ash low-sulfur high-volatile regulator HV-3 to obtain the hydrogen supply additive A.
1.0kg of hydrogen-donating additive A was taken and fully mixed with 3.0kg of the high-sulfur coking coal selected in this example to obtain modified high-sulfur coking coal A.
Selecting coking basic coal blend actually used in a certain coking plant, wherein the coking basic coal blend contains low-sulfur coking coal, and detecting volatile component V of the low-sulfur coking coaldaf23.28% of sulfur, St,d0.59% of ash content AdThe content was 8.85%.
And replacing 4.0kg of low-sulfur coking coal in 40kg of the coking basic coal blending by the modified high-sulfur coking coal A and the like to obtain 40kg of modified coking coal A.
The coking test of 40kg was carried out using the above-mentioned coking base blending coal and modified coking blending coal a, respectively. The coking final temperature is 1000 ℃, and the coking time is 16 h. The desulfurization rate in the coking process of the coking basic coal blending and the modified coking coal blending A is compared and evaluated, and the coking processQuality index of prepared coke, including sulfur content (S)d,coke) Crushing Strength (M)40) Abrasion resistance (M)10) Reactivity (CRI) and post-reaction intensity (CSR).
It can be seen from table 3 that the modified coking coal blend a is composed by adding the hydrogen supply additive a into the high-sulfur coking coal to obtain the modified high-sulfur coking coal a, and the hydrogen supply additive a is decomposed by heating during the coking process to generate a large amount of hydrogen-containing free radicals, so that on one hand, the cracking of C-S bonds in the high-sulfur coking coal is induced and activated to generate more active sulfur groups, and on the other hand, a sufficient hydrogen source is provided for the active sulfur groups generated by pyrolysis of the high-sulfur coking coal in a high-temperature region, thereby directionally regulating and controlling the distribution amount of sulfur in coke oven gas and coke, so that more sulfur in the coal is released in the form of sulfur-containing gas, the desulfurization rate is improved, and meanwhile, the sulfur content and other quality indexes in the coke fluctuate less, and the requirements of the metallurgical coke of the iron-making industry are met.
Example 2.
The coking basic blending coal used in example 1 also contained a low-sulfur fat coal, and the volatile matter V was detecteddaf29.23% of sulfur, St,d0.89%, ash content AdThe content was 7.88%.
Selecting a high-sulfur fat coal in certain place of China, and detecting the volatile component V of the high-sulfur fat coaldaf28.48% of sulfur, St,d1.62% and ash AdThe content was 9.23%. The low-sulfur fat coal in the coking base coal blending is partially replaced by the low-sulfur fat coal.
2.7kg of the high-sulfur fertilizer coal is taken, 1.0kg of the hydrogen-donating additive A in the embodiment 1 is added, and the mixture is uniformly mixed to obtain the modified high-sulfur fertilizer coal B.
And replacing 3.7kg of low-sulfur fat coal in 40kg of the coking basic coal blending by the modified high-sulfur fat coal B and the like to obtain 40kg of modified coking coal blending B.
The coking test of 40kg was carried out using the above-mentioned coking base blending coal and modified coking blending coal B, respectively. The coking final temperature is 1000 ℃, and the coking time is 16 h. Comparative evaluationDesulfurization rates in coking basic coal blending and modified coking coal blending B coking process, and quality indexes of prepared coke, including sulfur content (S)d,coke) Crushing Strength (M)40) Abrasion resistance (M)10) Reactivity (CRI) and post-reaction intensity (CSR).
As can be seen from Table 4, the modified high-sulfur fat coal B is obtained by adding the hydrogen supply additive A into the high-sulfur fat coal, the low-sulfur fat coal is partially replaced to form the modified coking coal blending B, the sulfur content of the coke obtained by coking is similar to that of the coke prepared by coking basic coal blending, and the quality indexes of other cokes fluctuate in a smaller range, so that the quality requirement of metallurgical coke is met.
Example 3.
The coking basic blending coal used in example 1 also contains a low-sulfur gas coal, and the volatile component V of the low-sulfur gas coal is detecteddaf35.77% of sulfur, St,d0.65% and ash content AdThe content was 11.18%.
Selecting a high-sulfur gas coal in certain place of China, and detecting the volatile component V of the high-sulfur gas coaldaf40.28% of sulfur, St,d2.12% and ash AdThe content was 9.93%. The low-sulfur gas coal in the coking basic coal blending is partially replaced by the low-sulfur gas coal.
2.1kg of the high-sulfur gas coal was taken, 0.7kg of the hydrogen-donating additive a in example 1 was added, and the mixture was uniformly mixed to obtain a modified high-sulfur gas coal C.
And replacing 2.8kg of low-sulfur gas coal in 40kg of the coking basic coal blend by the modified high-sulfur gas coal C and the like to obtain 40kg of modified coking coal blend C.
The coking test of 40kg was carried out using the above-mentioned coking base blending coal and modified coking blending coal C, respectively. The coking final temperature is 1000 ℃, and the coking time is 16 h. The desulfurization rates of the coking basic coal blending and the modified coking coal blending during the coking process C and the quality indexes of the prepared coke, including the sulfur content (S)d,coke) Crushing Strength (M)40) Abrasion resistance (M)10) Reactivity (CRI) and post-reaction intensity (CS)R)。
As can be seen from Table 5, the modified high-sulfur gas coal C is obtained by adding the hydrogen supply additive A into the high-sulfur gas coal, the low-sulfur gas coal is partially replaced to form the modified coking coal blend C, the sulfur content of the coke obtained by coking is similar to that of the coke prepared by coking basic coal blend, and the quality indexes of other cokes fluctuate in a smaller range, so that the quality requirement of metallurgical coke is met.
Example 4.
The coking basic blending coal used in example 1 also contains a low-sulfur lean coal, and the volatile component V of the low-sulfur lean coal is detecteddaf13.71% of sulfur, St,d0.38% of ash AdThe content was 9.01%.
Selecting a high-sulfur lean coal in certain place of China, and detecting the volatile component V of the high-sulfur lean coaldaf16.41% of sulfur, St,d1.91%, ash content AdThe content was 9.35%. The low-sulfur lean coal in the coking basic coal blending is partially replaced by the low-sulfur lean coal.
Taking 1.0kg of the high-sulfur lean coal, adding 0.5kg of the hydrogen-donating additive A in the embodiment 1, and uniformly mixing to obtain the modified high-sulfur lean coal D.
And replacing 1.5kg of low-sulfur lean coal in 40kg of the coking basic coal blending by the modified high-sulfur lean coal D and other mass to obtain 40kg of modified coking coal blending D.
The coking test of 40kg was carried out using the above-mentioned coking base blending coal and modified coking blending coal D, respectively. The coking final temperature is 1000 ℃, and the coking time is 16 h. The desulfurization rates in the coking processes of the coking basic coal blending and the modified coking coal blending D and the quality indexes of the prepared coke, including the sulfur content (S)d,coke) Crushing Strength (M)40) Abrasion resistance (M)10) Reactivity (CRI) and post-reaction intensity (CSR).
As can be seen from Table 6, the modified high-sulfur lean coal D is obtained by adding the hydrogen supply additive A into the high-sulfur lean coal, the modified coking coal D is formed by partially replacing the low-sulfur lean coal, the sulfur content of the coke obtained by coking is similar to that of the coke prepared by coking basic coal blending, and the quality indexes of other cokes fluctuate in a smaller range, so that the quality requirement of metallurgical coke is met.
Example 5.
HV-3 from example 1 was selected as a low-ash, low-sulfur, high-volatile modulating agent.
Weighing 25kg of waste internal combustion engine oil, 5kg of lubricating oil base oil, 40kg of methyl silicone oil and 20kg of sodium lignosulfonate, adding the materials into 10kg of water, and fully stirring and uniformly mixing to obtain a primary additive B.
And (4) uniformly spraying 45kg of the primary additive B into 55kg of the screened low-ash low-sulfur high-volatile regulator HV-3 to obtain the hydrogen supply additive B.
The high-sulfur coking coal and the coking basic blending coal in the example 1 are selected, and the low-sulfur coking coal in the coking basic blending coal is replaced by partial high-sulfur coking coal.
3.0kg of high-sulfur coking coal is taken, 1.2kg of hydrogen supply additive B is added, after uniform mixing, 4.2kg of low-sulfur coking coal in 40kg of coking basic coal blending is replaced by equal mass, and 40kg of modified coking coal blending E is obtained.
The coking test of 40kg was carried out using the above-mentioned coking base blending coal and modified coking blending coal E, respectively. The coking final temperature is 1000 ℃, and the coking time is 16 h. The desulfurization rates of the coking basic coal blending and the modified coking coal blending in the coking process E and the quality indexes of the prepared coke, including the sulfur content (S)d,coke) Crushing Strength (M)40) Abrasion resistance (M)10) Reactivity (CRI) and post-reaction intensity (CSR).
As can be seen from Table 7, the hydrogen donor additive B is added into the high-sulfur coking coal, the low-sulfur coking coal is partially replaced to form the modified coking coal blending E, the sulfur content of the cokes obtained by coking is similar to that of the cokes prepared by the coking basic coal blending, and the quality indexes of other cokes fluctuate in a smaller range, so that the quality requirement of metallurgical coke is met.
It can be seen from the above embodiments that the hydrogen supply additive obtained by mixing the preferred low-ash low-sulfur high-volatile component regulator and the primary additive can interact with the high-sulfur coking coal in the coking process, and active hydrogen-containing groups provided by the hydrogen supply additive through thermal decomposition can induce the pyrolysis of the activated high-sulfur coking coal to generate more active sulfur groups on one hand, and provide sufficient hydrogen sources for the active sulfur groups generated by the pyrolysis of the high-sulfur coking coal in a high-temperature region on the other hand, so that the distribution amount of sulfur in the coke oven gas and the coke can be directionally regulated, more sulfur in the coal is released in the form of sulfur-containing gas, and the purpose of reducing the sulfur content in the coke is achieved.
Based on the price difference of the current low-sulfur coking coal, the high-sulfur coking coal and the hydrogen supply additive, part of the high-sulfur coking coal and the hydrogen supply additive are introduced into the coking basic coal blending, so that the sulfur content and the mechanical strength of the coke obtained by coking, and the reactivity and the strength after reaction meet the quality requirements of metallurgical coke.
Claims (6)
1. A sulfur component directional removal method for coking by high-sulfur coking coal blending coal is characterized in that a hydrogen supply additive with the mass of 25-50 wt% is added into the high-sulfur coking coal, and then the high-sulfur coking coal added with the hydrogen supply additive and other masses replace 5-15 wt% of low-sulfur coking coal in coking basic blending coal to obtain modified coking blending coal combined by the hydrogen supply additive, the high-sulfur coking coal and the coking basic blending coal for coking;
the hydrogen supply additive is formed by mixing 45-60 wt% of a low-ash low-sulfur high-volatile regulator and 40-55 wt% of a primary additive;
wherein the low-ash low-sulfur high-volatile regulating agent is prepared by pretreating one or more high-volatile coals, and has a particle size of less than or equal to 2mm, an active component content of more than or equal to 70wt%, and a volatile component VdafNot less than 30wt% of sulfur St,dNot more than 0.7wt%, ash content AdLess than or equal to 7wt% of coal dust component, the content of active component is the sum of the content of vitrinite component and the content of chitin component in the coal obtained by coal rock microscopic component analysis;
the primary additive is a liquid consisting of 10-30 wt% of waste lubricating oil and/or lubricating oil base oil, 20-40 wt% of silicone oil, 5-25 wt% of sulfonate anionic emulsifier and 5-25 wt% of water.
2. The method according to claim 1, wherein the high-sulfur coking coal used for replacing low-sulfur coking coal in coking base blending coal is blending coal of one or more of high-sulfur gas coal, fat coal, coking coal or lean coal.
3. The method for directional removal of sulfur components according to claim 2, wherein the sulfur content in the high-sulfur coking coal is 1.5-3 wt%, the organic sulfur content accounts for more than or equal to 65% of the total sulfur, and other coal quality indexes are close to those of the low-sulfur coking coal in the coking base blending coal.
4. The method of claim 1, wherein the high volatile coal is one of long flame coal, non-caking coal, weakly caking coal, 1/2 caking coal, gas coal, or a mixture thereof.
5. The method for directional removal of sulfur components according to claim 1, wherein the silicone oil is any one of methyl silicone oil, methyl hydrogen-containing silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen-containing silicone oil and hydroxyl hydrogen-containing silicone oil, or a mixture of several of them in any proportion.
6. The method according to claim 1, wherein the sulfonate-based anionic emulsifier is any one of alkylbenzene sulfonate, α -olefin sulfonate, alkyl sulfonate, α -sulfo monocarboxylic acid ester, fatty acid sulfoalkyl ester, succinate sulfonate, alkylnaphthalene sulfonate, petroleum sulfonate, lignin sulfonate, and alkyl glyceryl ether sulfonate.
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