107 results about "Vitrinite" patented technology

The present invention is one kind of coke coal blending ratio and coking process. The coke coal consists of fat coal 20-23 weight portions, coking coal 50-55 weight portions, 1/3 coking coal 15-20 weight portions, and lean coal 8-12 weight portions. The compounded coal has the quality including ash content 9-10 %, sulfur content 0.65-0.73 %, volatile component 24-26 %, G value 83-88, Ymm of 16-20, and Xmm of 20-30. The quality parameters, vitrinite reflectances and microscopic ingredients of the said four kinds of coal are specifically defined. During the coking process, the mixed coal material is sintered at 1200 deg.c for not less than 16 hr. The present invention can obtain coke with high strength.

The invention discloses a shale gas reservoir compressibility evaluation method based on weight distribution. The shale gas reservoir compressibility evaluation method preferably chooses a compressibility evaluation parameter according to factors of a geological sweet heart and an engineering sweet heart. Starting from an angle of evaluating a shale reservoir gas-bearing property and an easy alterationability potential, the shale gas reservoir compressibility evaluation method integrates a mineral ingredient content and mesomechanics parameters to calculate engineering sweet heart parameters through standardizing geological sweet heart parameters, and constructs a compressibility evaluation model which can perform continuous determination on the reservoir; a geological sweet hear compressibility evaluation index, an engineering sweet heart compressibility evaluation index and a comprehensive compressibility evaluation index can be calculated only through obtaining a shale reservoir total organic carbon content, a vitrinite reflectivity and a mineral constituent content, and thus shale gas reservoir compressibility evaluation is realized. The shale gas reservoir compressibility evaluation method can accurately divide an effective fractured layer segment and a shielding layer segment, and guides fracture design and construction.

The invention relates to a high-proportion coal blending and coking method, wherein the coal blending varieties for coking used in the method comprises gas coal, fat coal, coking coal, lean coal and one third of coking coal. The coking method comprises the following steps: A. crushing raw coals separately, wherein crushed particle grade is less than 3mm, and the coal with particle size being lessthan 2mm accounts for more than 60% of the raw coal; and B. carrying out basic coal blending coking on the raw coals obtained in step A, wherein anhydrous ash-free basis volatile matter (Vdaf) of thebasic coal blending quality is 26.0-30.0%, the averagely maximum reflectance (MMR) of vitrinite is 1.0-1.1%, ash content (Ad) is less than 10.1%, total sulfur (St, d) is less than 1.1%, caking index (G) is more than 74, maximum thickness of a gelatine layer is more than 18mm and ratio between active components and inert components is 1.7-1.8. The coal blending coking method of the invention can enlarge coking coal source, lower ash content, sulfur content and phosphorus content in coke, reduce production cost of enterprises, increase economic benefit, improve competitiveness of enterprises, and achieve good comprehensive benefit.

The invention discloses a method of coal blend coking, comprising the steps as follows: blending various single coking coal as follows in percentage by weight: 1-5 percent of gas-fat coal, 5-15 percent of fat coal, 25-35 percent of 1/3 coking coal with Vdaf larger than 29 percent, 3-10 percent of Indonesia coal, 25-35 percent of coking coal with the Vdaf smaller than 27 percent and 10-15 percent of lean coal, wherein, to the Indonesia coal, the Vdaf is between 27-29 percent, the Y value is no more than 25mm and the maximum reflectance of vitrinite is 1.0-1.15 percent, the G value is larger than 85, the initial softening temperature is larger than 400 DEG C, the maximum fluidity temperature is between 450-470 DEG C, the Gieseler fluidity maximum value is smaller than 500ddpm, the Audiberts-Arnu dilatation b percent is larger than 100 percent, and the coking coarse mosaic is over 60%; and the G value of mixed coal is 79-82, the Gieseler fluidity of the mixed coal is 400-1000ddpm, and the Audiberts-Arnu dilatation (a+b) percent of the mixed coal is 30-40 percent.

The invention relates to a coal-rock blending method suitable for tamping coking. The technical scheme includes: step one, subjecting single coal for coking to detection of processes and coal-rock properties and calculating an active-idle ratio A/I; step two, matching according to the active-idle ratio A/I, the maximum mean reflectivity of vitrinite and distribution proportion of random reflectivity Re of the vitrinite, and if the A/I of blended coal after blending is 2.0-2.5, 1.00-1.40%, and distribution histogram of the random reflectivity Re of the vitrinite of the blended coal is continuous, then starting step four; step three, repeating the step two if the conditions are not met; step four, taking blended coal samples for detection of the maximum thickness of gelatinous layer Y value, if the Y value ranges from 10mm to 15mm, then completing the coal blending; step five, if the Y value is not between 10mm to 15mm, circulating the step two; and step six, furnacing for coking after tamping, wherein the tamping density is 1.10-1.15g/cm3. The coal-rock blending method suitable for the tamping coking can refine the blended coal after the tamping coking, expand utilization range of coking coal resources and improve coke quality.

The invention discloses a coal-bed gas-content calculation method including: selecting a series of coal-core samples of a tested area; measuring a corresponding maximum vitrinite reflectivity Rmax of each coal-core sample and a well log value of each of corresponding well sections of the coal-core samples; establishing a relationship between the maximum vitrinite reflectivities Rmax and coal-bed gas-content parameters R; and establishing a calculation formula of the coal-bed gas content Vgas according to the well log values and the coal-bed gas-content parameters R. Through introduction of the vitrinite reflectivity, the coal-bed gas-content calculation method takes an effect of coal rank on the coal-bed gas content into full consideration so that the calculated coal-bed gas content complies with an actual geological condition in a better way. And at the same time, the coal-bed gas content is convenient to obtain and low in cost because of being capable of being obtained only based on the well logging information and the vitrinite reflectivity. Moreover, coal-bed gas content of continuous well sections can be obtained so that application effect is good.

The invention discloses a method for preparing coking secondary coal by modification by low-order nonadhesive coal, which comprises: drying the low-order nonadhesive coal and roughly grinding the low-order nonadhesive coal till the particle size is smaller than 0.3 millimeter, and mixing the ground low-order nonadhesive coal with treated high-temperature coal tar; mixing the mixture with a hydrogenation solvent and a catalyst, adding the obtained mixture into a give reactor to perform a hydrogenation reaction, wherein the reaction time is 350 to 420 DEG C, the dwelling time is 30 to 60 minutes, and the system pressure is 9 to 16MPa, the weight part ratio of the particle mixture to the hydrogenation solvent is 1:(1-3), and the weight part ratio of the particle mixture to the catalyst is 1:(0.01-0.06); and finally, distilling the reaction product under a reduced pressure to obtain the solid modified coking coal. The caking index G of the solid product (modified coking coal) of the method is more than 75, the average maximum reflectivity of vitrinite is about 0.7 and can partially replace primary coking coal for coking with secondary coal. The method has an obvious industrial application prospect.

The invention provides a method for establishing a burial-thermal evolution history map of a shale gas reservoir. The method comprises the steps of acquiring layering data of a current stratum and static temperature measurement data of the current stratum; establishing a stratum lithology model of an interval for research; acquiring various burial history parameters; calculating the paleo-thickness and the buried depth of each stratum in each period; determining the ground temperature gradient, the heat conductivity, the heat generation rate and the ground heat flow value characteristics of the current ground temperature field; analyzing a formation mechanism and an evolution rule of the paleo-geothermal field; determining the maximum paleo-ground temperature experienced by the stratum towhich the sample belongs in the geological evolution process by using vitrinite reflectivity data; moreover, determining the paleo-geothermal gradient at the moment jointly by utilizing the Ro data ofthe multiple samples at different depths; determining a paleo-temperature evolution process of the sample, restoring a paleo-geothermal gradient evolution history, and drawing a burial history map ofthe paleo-geothermal field of the research area; calculating hydrocarbon source rock maturity evolution history; establishing and drawing a burial-thermal evolution history map of a sedimentary basin. According to the invention, high thermal performance history precision can be obtained.

The invention discloses a coal quality sorting method based on cokeability of coking coal. The sorting method comprises the following steps: 1) determining the indexes which affect the cokeability of coking coal: determining the average maximum reflectivity of vitrinite, the Gieseler maximum fluidity, solid-soft temperature interval and optical organizational structure of coke as the indexes of cokeability of coking coal; 2) determining the indexes which affect the cokeability of coking coal; and 3) correspondingly dividing various single coal into determining the indexes which affect the cokeability of coking coal: gas-fat coal, gas coal, fat coal, 1/3 coking coal, coking coal, lean coal, inferior mixed coal or special cause coal according to different measuring results in the step 2). The invention further discloses a coal distributing method based on the cokeability of coking coal. By taking the average maximum reflectivity of vitrinite, the Gieseler maximum fluidity, solid-soft temperature interval and optical organizational structure of coke as the sorting indexes, not only are the indexes simple to set, but also the inferior mixed coal or special cause coal can be differentiated, and part of highly degenerative coke is prevented from being misjudged as lean coal, so that resources are scientifically and reasonably configured.

The invention relates to a discrimination method for the charging period of an underground biodegradation heavy oil reservoir, and belongs to the field of petroleum geological exploration. According to the specific technical scheme, biomarkers with high anti-biodegradation ability and good sensitivity of crude oil charging and related parameters thereof are selected, a molecular biomarker parameter TA (I)/TA (I+II) of the underground biodegradation heavy oil maturity and a quantitative relation of TA (I)/TA (I+II) and the vitrinite reflectivity Ro are calibrated, and the charging period of biodegradation heavy oil is discriminated by employing the parameter. According to the method, based on chromatography mass spectrometry characteristics and molecular biomarker response of biodegradation crude oil, effective discrimination of the charging period of the biodegradation heavy oil can be realized, the reservoir forming process of the biodegradation heavy oil is tracked, and the problem of the calculation of the proportion of crude oil being charged in different periods for multi-period mixed crude oil is solved.

The present invention relates to A sort of The coal blending method of producing high-quality coke by using lean coal and gas coal in a large proportion. The specific implementation process is: the following coal types are mixed according to the weight percentage to obtain the blended coal: the maximum reflectance of vitrinite R _max >1.4% lean coal 20-21%, No. 45 gas coal 20-21%, fat coal 0%, coking coal 43-48%, 1/3 coking coal 12-17%, the sum of the weight percentages of the above coal types is 100%, the sum of the cheapest lean coal and gas coal in the mixed coal is ≥40%, and the most expensive fat coal is zero. On the premise of ensuring the quality of high-quality coke required by the blast furnace, the coal blending structure is optimized, coking coal resources are expanded, the consumption of high-quality coking coal resources is reduced, the cost of coal blending and blast furnace coke is reduced, thereby reducing the cost of iron After the implementation of this achievement, the cost of coking coal blending has been reduced by 12 yuan/ton of coal.

The invention discloses a method for plasticized low metamorphic bituminous coal. The method is to uniformly mix the low metamorphic bituminous coal and hydrogenation solvent, to take ferric oxide as catalyst, to infuse hydrogen for reaction, and to obtain a product, wherein, the hydrogenation solvent is tetranap; the amount of the hydrogenation solvent is 2.0 to 2.5 times of the mass of the low metamorphic bituminous coal, and the hydrogen pressure is between 2 and 6 MPa; the amount of the catalyst ferric oxide and the amount of the cocatalyst brenstone are respectively 1 to 6 percent and 1 to 3 percent of the mass of the raw materials, namely the low metamorphic bituminous coal; and the reaction temperature is between 340 and 400 DEG C and the reaction time is between 20 and 60 minutes. The method is simple and convenient in technique and easy to operate; and the conversion rate of the raw material coal can reach over 80 percent, and the reaction hydrogen consumption is 0.45 percent. The technical property of the plasticized product is similar to that of gas coal; the mean maximum reflectivity Rmax of a vitrinite is about 0.76 percent; and the bond property is obviously strengthened and the binding index reaches about 60. The low metamorphic bituminous coal product obtained by utilization of the plasticizing method provided by the invention completely meets the requirements of coal blending and coking and has important industrial application value.

The invention discloses a coal blending method capable of increasing the blending amount of gas coal. The method comprises the following steps: 1) controlling the reasonable granularity of gas coal; 2) determining and analyzing the volatile compounds, caking index, coarse grain mosaic structure and maximum average vitrinite reflectivity of each coking coal, wherein according to determined values of the above-mentioned indexes, coking coals are respectively recorded as the coking coal No. 1 and the coking coal No. 2, and 1/3 coking coals are respectively recorded as the 1/3 coking coal No. 1 and the 1/3 coking coal No. 2; and 3) determining the blending proportion of each coking coal. According to the invention, through controlling of granularity of gas coal and selection of appropriate coking coal varieties, no or a small amount of high-quality coking coal may be blended, coal properties of different coking coals are given to full play, the blending proportion of gas coal is increased, and coal blending cost is reduced. Dry quenching CSR of a top-mounted coke oven with a height of more than 6 m is no less than 65.0% without coal-free humidifying, coal molding, tamping coking or the like.

The invention relates to a novel method for preparing active carbon with high specific surface area from coal and waste and old plastics by microwave, which belongs to the technical field of preparation of active carbon. The method comprises the following steps of: separating different components in coal; carrying out pulverization and oxidization preprocessing on the obtained fusain and vitrinite component; mixing with different waste and old plastics in a certain proportion; adding certain amount of activating agent and uniformly mixing and then placing the mixture into a crucible; embedding the crucible into a ceramic container provided with a heat insulating material and placing the ceramic container into a microwave oven; preheating the ceramic container under the radiation of small microwave power and carrying out carbonized activation by needed power in certain time; cooling and washing by a proper amount of hydrochloric acid; drying and pulverizing to obtain the active carbon with high specific surface area. The preparation process is based on a microwave heating technology and is simple and quick; the active carbon prepared by the synergistic effect of the coal and the plastics has high adsorptive values of methylene blue and iodine and can be used for the treatment of wastewater; meanwhile, the white pollution is eliminated, and the application prospect is wide.

A method for chemically making a cave of an open hole of a gas well of a coal seam includes steps of selecting a coal reservoir with the vitrinite reflectivity lower than 0.6%; forming a channel for reaching the coal seam in a drilling operation mode; preparing aqueous alkali on the ground, pumping the aqueous alkali to a coal seam section along the channel and soaking the coal seam section in the aqueous alkali for a period of time; discharging collapsed slack coal to the ground in a well flushing operation mode; carrying out soaking and well flushing operation repeatedly, computing the collapse diameter of the coal seam according to the weight of the discharged slack coal until the cave with the designed size is formed in the collapsed coal seam section, and organizing follow-up production; and inspecting a chemical cave making application effect by comparing the method to the traditional method for making a cave of an open hole. The method has the advantages that once the coal reservoir with the vitrinite reflectivity lower than 0.6% is reacted with the aqueous alkali, large quantities of organic matters can be extracted, the mechanical strength of coal is sharply reduced, the slack coal is formed, the cave is formed in a collapsed coal wall, and the method for chemically making the cave of the open hole has important significance in aspects of increasing the size of the cave, eliminating pollution zones near the well and reducing construction cost for making the cave of the open hole.

The invention discloses an enrichment method of coal micromaceral. The enrichment method comprises the following steps: a step of crushing and separating, namely, executing crushing and separating treatment for at least two times, crushing a coal sample in the first-time crushing and separating treatment process, and separating out an inert enrichment component of small particle diameter and a vitrinite enrichment component of large particle diameter according to the predetermined particle diameter, wherein the subsequent crushing and separating treatment process for each time is that the vitrinite enrichment component obtained through crushing and separating treatment for the previous time is crushed, and the inert enrichment component of small particle diameter and the vitrinite enrichment component of large particle diameter are separated out according to the predetermined particle diameter corresponding to the subsequent crushing and separating steps; and a step of enriching, namely, collecting the inert enrichment components obtained through crushing and separating treatment for each time to obtain inert enrichment coal, and collecting the vitrinite enrichment component obtained in the last-time crushing and separating treatment process to obtain vitrinite enrichment coal. According to the enrichment method disclosed by the invention, a heavy-medium solvent is not used, so that damage is avoided; the obtained enrichment coal is easy to store; in addition, even through the enrichment coal is ground to be below 200 meshes, the composition structures and the properties of the coal cannot be influenced.

The invention discloses a preparation method of coal-based carbon foam from pre-treated bituminous coal, to overcome the shortcomings of high ash content and unstable caking property of bituminous coal. The method comprises the steps of adding pulverized bituminous coal and surfactant into a flotation solution, stirring to obtain coal slurry, transferring into a horizontal rotor of a centrifugal separator to perform maceral separation, taking upper floating matters, washing with water to remove floatation solution, stirring, filtering, drying filter residue at room temperature to obtain enriched vitrinite, and preparing carbon foam from the enriched vitrinite by high-pressure permeation inert gas method or self pressure boosting method. The preparation method has the advantages of simple process flow and low cost, realizes maceral separation and enrichment of bituminous coal, satisfies requirement of coal-based carbon foam preparation for coal caking property and ash content, and widens coal application range. The prepared coal-based carbon foam has the advantages of uniform pore distribution, high compression strength, and adjustable volume density and compression strength.

The invention relates to a method for discriminating affinity of a high-maturity crude oil, and belongs to the technical field of oil and gas exploration and development. The method for discriminatingaffinity of the high-maturity crude oil provided by the invention comprises the following steps: 1) calculating the relationship between the methylphenanthrene index MPI and the vitrinite reflectanceRo of the phenanthrene series compound in the source rock extract to obtain the values of A, B, C, and D; 2) calculating the relationship between the methylphenanthrene index MPI of the phenanthreneseries compound in the crude oil and the maturity Rc of the crude oil to obtain Rc; 3) establishing a change relationship between the vitrinite reflectance and the geological history of the source rocks of different horizons; and 4) assuming the source horizon and accumulation time of crude oil by using the Rc in the step 2) and the change relationship between the vitrinite reflectance and the geological history determined in the step 3). The method for discriminating affinity of the high-maturity crude oil provided by the invention can finely determine the source of deep oil and gas, therebyguiding the efficient exploration of deep oil and gas.

The invention discloses a method for producing high-quality metallurgical coke by using coal and rock indexes, and belongs to the technical field of blended coal for coking. According to the method, the target of producing high-strength metallurgical coke is achieved by controlling the distribution ranges of volatile index Vdaf, the caking index G, the maximal gelatinous layer thickness Y and the vitrinite mean maximum reflectance Rmax (0.9%-1.5%). According to the method, the feeding ratios of fat coal and coking coal can be reduced to about 50%; the heat intensity CSR of the coke is over 65%; and the requirements of over 2500m<3> blast furnace ironmaking are met.

The invention relates to a method for improving fineness and particle size composition of stamped coke blended coal. According to the method, the Hardgrove grindability index and the original finenessare combined, coal difficult to grind or coal with coarse original particles is pre-ground, and pre-grinding is more targeted; through coal petrography analysis on coal having a size of greater than3mm in blended coal, which kind of coal causes unqualified granularity can be judged according to the distribution proportion of each reflectivity interval of vitrinite, the reason why the particle size of the blended coal does not reach the standard can be quickly found and adjusted in a targeted mode, and the situation that in order to improve the fineness of the blended coal, the smashing levelof all pre-smashed coal or blended coal is improved, part of coal is smashed too finely, and energy consumption is increased is avoided. The optimal particle size composition of the coal as fired isachieved by specifically crushing and controlling the ratio of the part with the particle size of more than 5mm to the part with the particle size of less than 0.5 mm. By adopting the method, the cokeobtained by coking achieves high strength and large lumpiness, and the quality level is improved.

A method for calculating a coal-bed gas absorption amount of a gas well comprises the following steps: step one: testing and analyzing a coal bed that a gas well passes through, so as to acquiring a coal quality industrial analysis result, and collecting gas well coal bed data; step two: calculating a maximum reflectance of vitrinite according to a dry ash-free volatile; step three: calculating a coal-bed gas absorption amount of each coal bed according to a coal-bed gas dynamic absorption equation; and step four: calculating an absorption amount of each coal bed under different pressures according to a formation temperature of each coal bed, and summing all absorption amount values to obtain a total absorption amount when the gas well passes through all coal beds. The method is capable of greatly improving precision of calculation of coal-bed gas absorption amount of the gas well and has important practical significance for instructing coal-bed gas exploration and development.