CN110144249A - The preparation method of high matching coal - Google Patents

The preparation method of high matching coal Download PDF

Info

Publication number
CN110144249A
CN110144249A CN201910407326.9A CN201910407326A CN110144249A CN 110144249 A CN110144249 A CN 110144249A CN 201910407326 A CN201910407326 A CN 201910407326A CN 110144249 A CN110144249 A CN 110144249A
Authority
CN
China
Prior art keywords
coal
preparation
heavy oil
high matching
oil
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.)
Granted
Application number
CN201910407326.9A
Other languages
Chinese (zh)
Other versions
CN110144249B (en
Inventor
颜丙峰
王光耀
李伟林
李培霖
赵渊
谷小会
刘敏
石智杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Coal Research Institute CCRI
Original Assignee
China Coal Research Institute CCRI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Coal Research Institute CCRI filed Critical China Coal Research Institute CCRI
Priority to CN201910407326.9A priority Critical patent/CN110144249B/en
Publication of CN110144249A publication Critical patent/CN110144249A/en
Application granted granted Critical
Publication of CN110144249B publication Critical patent/CN110144249B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
    • C10L1/322—Coal-oil suspensions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/24—Mixing, stirring of fuel components
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/28—Cutting, disintegrating, shredding or grinding

Abstract

The present invention proposes a kind of preparation method of high matching coal comprising following steps: the coal after drying is worn into coal dust by coal washing, broken and drying；Coal dust and heavy oil are mixed in a certain ratio；Catalyst is added, coal is made in stirring；The coal meets claimed below: volatile matter >=37%；Hydrogen-to-carbon ratio >=0.75；Inertinite content≤20%；Reflectance of vitrinite≤0.65；The heavy oil meets claimed below: ash content≤1.0%；Its dynamic viscosity≤1500mPa.s at 100 DEG C；Hydrogen-to-carbon ratio is 0.7~1.70；Aromaticity is greater than 0.20.The prepared coal of this method has high matching, it can avoid coal and heavy oil in coal layering occurs and is deposited on coal in preheater or reactor and because caused by hot-spot the problem of coking, the synergistic effect between coal and heavy oil can be given full play to simultaneously, the conversion ratio and oil yield for improving coal and heavy oil, thus more practical.

Description

The preparation method of high matching coal
Technical field
The invention belongs to petrochemical industry and technical field of coal chemical industry more particularly to a kind of preparation sides of high matching coal Method.
Background technique
The technology of refining is the technology for adding coal and heavy oil altogether hydrogen to produce clean fuel oil to kerosene altogether, overall goal be It is the hot spot studied at present by heavy oil upgrading while coal liquefaction.During kerosene refines altogether, coal and heavy oil, catalyst etc. are first It to be first configured to coal, reactor is then delivered by pump and carries out total hydrogenation reaction.But and not all coal and Heavy oil is suitable for kerosene and refines technology altogether, can wherein there are problems that matching between coal and heavy oil.If the matching of coal and heavy oil Property it is poor, then will appear the phenomenon that coal and heavy oil are layered, coal be deposited in reactor, makes it due to hot-spot The problems such as at coking, and the synergistic effect of coal and heavy oil is also a greater impact.Therefore, the matching of coal and heavy oil how is improved It is to restrict kerosene to refine one of the critical issue that technology further develops altogether.
Summary of the invention
The main purpose of the present invention is to provide a kind of preparation method of high matching coal, technology to be solved is asked Topic is that have high matching by the coal that this method is prepared, and can be avoided coal in coal and heavy oil in preheater or anti- It answers there is a phenomenon where being layered, coal being made to deposit and cause coking because of hot-spot in device, while high matching Coal can give full play to the synergistic effect between coal and heavy oil, the conversion ratio and oil yield of coal and heavy oil be improved, thus more Add suitable for practical.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.It proposes according to the present invention A kind of high matching coal preparation method comprising following steps:
1) coal washing, broken and drying, wear into coal dust for the coal after drying；
2) coal dust and heavy oil are mixed in a certain ratio；
3) catalyst is added, coal is made in stirring；
Wherein, the coal meets claimed below:
In terms of mass percentage, moisture-and-ash-free basis volatile matter >=37%；Number ratio >=0.75 of its hydrogen, carbon atom； It removes mineral base inertinite content≤20%；Its reflectance of vitrinite Rmax≤0.65；
The heavy oil is selected from petroleum based heavy fuel oils and/or coal base weight oil, meets claimed below:
In terms of mass percentage, ash content≤1.0%；Content of impurities≤0.6% of its petroleum based heavy fuel oils and/or Toluene insolubles content≤9.0% of coal base weight oil；Its dynamic viscosity≤1500mPas at 100 DEG C；Its hydrogen, carbon atom Number ratio is 0.7~1.70；Its aromaticity is greater than 0.20.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, the preparation method of high matching coal above-mentioned, wherein in terms of dry matrices amount percentage composition, step 1) pit ash≤12% after washing.
Preferably, the preparation method of high matching coal above-mentioned, wherein in terms of dry matrices amount percentage composition, step 1) moisture≤4% of coal after drying.
Preferably, the preparation method of high matching coal above-mentioned, wherein partial size≤0.15mm of the coal dust.
Preferably, the preparation method of high matching coal above-mentioned, wherein the coal is selected from lignite, jet coal, no At least one of viscous coal, weakly caking coal or bottle coal.
Preferably, the preparation method of high matching coal above-mentioned, wherein the petroleum based heavy fuel oils be selected from shale oil, At least one of heavy crude, viscous crude, catalytic cracked oil pulp, residual oil；
The coal base weight oil in high temperature coal-tar, medium temperature coal tar, coalite tar or gasification tar at least It is a kind of.
Preferably, the preparation method of high matching coal above-mentioned, wherein in terms of mass percentage, the oily coal The content of coal dust is 20%~50% in slurry.
Preferably, the preparation method of high matching coal above-mentioned, wherein the stirring is using agitating paddle machinery Stirring uses pump circulation flowing stirring, mixing time >=0.5h.
Preferably, the preparation method of high matching coal above-mentioned, wherein by the heavy oil pre-add hydrogen；Described is pre- The reaction temperature for adding hydrogen is 370~430 DEG C, and hydrogen partial pressure is 12~19MPa, and gas-liquid volume ratio is 600~1200, air speed 0.5 ~1.0h-1。
Preferably, the preparation method of high matching coal above-mentioned, further comprising the steps of:
The coal hydrogenation reaction includes 350~525 DEG C of heavy distillate in the product of acquisition；
The heavy distillate is mixed with the heavy oil, then is mixed in a certain ratio with coal dust, new oily coal is prepared Slurry；
In terms of mass percentage, the additive amount of the heavy distillate is 5%~35%.
By above-mentioned technical proposal, a kind of preparation method of high matching coal proposed by the present invention at least has following Advantage:
1, the preparation method of high matching coal proposed by the present invention is protected by being defined to coal and its property It has demonstrate,proved coal and can achieve higher conversion ratio and oil yield in reaction process；
2, the preparation method of high matching coal proposed by the present invention reduces its ash content by carrying out washing to coal, subtracts The light nonproductive load of reactor, slows down the abrasion of equipment, the product oil mass being entrained with by ash content is reduced, to improve Oil yield；
3, the preparation method of high matching coal proposed by the present invention, is defined and pre-add by counterweight oil nature Hydrogen enhances heavy oil to the solvability of coal, improves its hydrogen supply performance, reduces the viscosity of coal, accelerate reactant The mass transfer of system and heat transfer, to make coal and heavy oil that can reach higher conversion ratio；
4, the preparation method of high matching coal proposed by the present invention, can be according to the needs of different process technology, will be more Kind coal dust and a variety of heavy oil are mixed in proportion, realize that uniform, stable coal is prepared.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention, detailed description is as follows below.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with Preferred embodiment, to a kind of preparation method of high matching coal proposed according to the present invention, specific embodiment, knot Structure, feature and its effect, detailed description is as follows.
The present invention proposes a kind of preparation method of high matching coal comprising following steps:
1) coal washing, broken and drying, wear into coal dust for the coal after drying；
2) coal dust and heavy oil are mixed in a certain ratio；
3) catalyst is added, coal is made in stirring；
Wherein, the coal meets claimed below:
In terms of mass percentage, moisture-and-ash-free basis volatile matter >=37%；Number ratio >=0.75 of its hydrogen, carbon atom； It removes mineral base inertinite content≤20%；Its reflectance of vitrinite Rmax≤0.65；
The heavy oil is selected from petroleum based heavy fuel oils and/or coal base weight oil, meets claimed below:
In terms of mass percentage, ash content≤1.0%；Content of impurities≤0.6% of its petroleum based heavy fuel oils and/or Toluene insolubles content≤9.0% of coal base weight oil；Its dynamic viscosity≤1500mPas at 100 DEG C；Its hydrogen, carbon atom Number ratio is 0.7~1.70；Its aromaticity is greater than 0.20.
Above-mentioned coal matching is related to the stability of coal, can transport property and three aspects of reactivity.
In kerosene altogether refining technology, since coal dust is solid particle, it is necessary to being made into coal with heavy oil could convey, in order to Guarantee that transportable coal property is almost the same, first has to guarantee the uniform, stable of coal；Secondly, defeated for the ease of pumping It send, mass transfer and heat transfer, coal viscosity are usually no more than 1500mPas；Again, coal is with heavy oil and non-fully respectively independent anti- It answers, but there is stronger reciprocation.On the one hand, heavy oil has facilitation to the reaction of coal.Heavy oil make at high temperature coal by Heat of solution simultaneously dissolves hydrogen, is conducive to the contact of hydrogen, coal and catalyst in this way, promote coal thermal cracking and hydrogenation reaction into Row.And the thermal cracking of coal and plus Hydrogen Energy promote the bridged bond of coal to open, generation free radical fragment；Meanwhile heavy oil is to free radical fragment Diluting effect can be played, again to reduce polycondensation reaction.The free radical fragment reacted with heavy oil molecules or with heavy oil supply (or Transmitting) active hydrogen combine, generate stable small molecule, improve coal liquefaction yield.In addition, Ni, V for containing in heavy oil were waited Cross the good catalyst that metal is also coal liquefaction.On the other hand, coal and ash content can play catalysis to the modification of heavy oil again Effect, can promote heavy oil lighting, prevent heavy oil coking, accelerate the hydrogenation of the chemical bond of the compounds such as sulfur in heavy oil, arsenic or group Fracture, formed hydrogen sulfide, arsenic hydride and escape, so that the objectionable impurities in heavy oil is removed；Porosity after being liquefied simultaneously Residual coal hole can adsorb the impurity such as the heavy metal in heavy oil, to improve the removal efficiency of metal in heavy oil, contain heavy metal Amount height, unmanageable various heavy oil modifications are at light-end products.As it can be seen that the preparation method of high matching coal, on the one hand can The stratified sedimentation coking for avoiding the problem that coal and heavy oil, is also easy to pump, while can make concerted reaction effect above-mentioned more preferable again, Coal and heavy oil is set to obtain high conversion and oil yield.
Preferably, the preparation method of high matching coal above-mentioned, wherein in terms of dry matrices amount percentage composition, step 1) pit ash≤12% after washing.
Preferably, the preparation method of high matching coal above-mentioned, wherein in terms of dry matrices amount percentage composition, step 1) pit ash≤8% after washing.
The lower the content of ashes that the coal is included the better.Technical solution of the present invention is by carrying out washing, drop to coal The ash content that low coal includes slows down the abrasion of equipment, reduces because of ash content to alleviate the unproductive load of reactor And the product oil mass being entrained with, further improve oil yield.
Preferably, the preparation method of high matching coal above-mentioned, wherein in terms of dry matrices amount percentage composition, step 1) moisture≤4% of coal after drying.
The moisture that the coal is included plays negative effect, major embodiment in the process for preparation of coal and reaction process : moisture is excessively high to be unfavorable for coal wearing into coal dust；Meanwhile moisture can also reduce the hydrogen partial pressure of reaction process, reduce reactor Processing capacity, and also will increase the yield etc. of waste water, therefore need containing for strict control moisture in the coal drying process of step 1) Amount.
Preferably, the preparation method of high matching coal above-mentioned, wherein partial size≤0.15mm of the coal dust.
Preferably, the preparation method of high matching coal above-mentioned, wherein partial size≤0.074mm of the coal dust.
For list from the aspect of the matching of coal, the particle of the coal dust is smaller, then coal dust is less susceptible to settle, and makes The viscosity for obtaining coal increased, to improve the matching of coal；It is preferred that grain diameter≤0.15mm of coal dust；Into one Step, grain diameter≤0.074mm of coal dust.
But the particle of coal dust is smaller, then the cost for coal being worn into coal dust can be higher, for the production cost ratio of coal It is less favorable, therefore on the basis of meeting the high matching of coal, comprehensively consider two side of viscosity of production cost and coal The balance in face, the partial size of suitable control coal dust.
Preferably, the preparation method of high matching coal above-mentioned, wherein the coal is selected from lignite, jet coal, no At least one of viscous coal, weakly caking coal or bottle coal.
The lower selected coal oxygen content the better, and reason is that while that oxygen included in coal can promote hydrogenation reaction Occur, but the hydrogen that the oxygen element can largely in consumption system, generate by-product water.On the one hand, hydrogen is largely consumed, will cause very Big cost of raw material waste, and the non-targeted product of by-product water generated, carry out post-processing and are removed, can also produce Raw biggish cost waste, therefore the lower the oxygen content requirement of coal selected by technical solution of the present invention the better.Generally, brown The oxygen content of coal is not higher than 20% (mass fraction, dry ash free basis)；Oxygen in jet coal, dross coal, weakly caking coal and bottle coal contains Amount is not higher than 15% (mass fraction, dry ash free basis).
Preferably, the preparation method of high matching coal above-mentioned, wherein the petroleum based heavy fuel oils be selected from shale oil, At least one of heavy crude, viscous crude, catalytic cracked oil pulp, residual oil；
The coal base weight oil in high temperature coal-tar, medium temperature coal tar, coalite tar or gasification tar at least It is a kind of.
Preferably, the preparation method of high matching coal above-mentioned, wherein the moisture content of the heavy oil it is general≤ 4.0%.
Preferably, the preparation method of high matching coal above-mentioned, wherein in terms of mass percentage, the oily coal The content of coal dust is 20%~50% in slurry.
Preferably, the preparation method of high matching coal above-mentioned, wherein the stirring is using agitating paddle machinery Stirring uses pump circulation flowing stirring, mixing time >=0.5h.
The stirring is intended to prevent the deposition of coal, to guarantee the slurry uniformity of coal.Coal needs not It is circulated with stirring paddle stirring or with pump with stopping.
Preferably, the preparation method of high matching coal above-mentioned, wherein by the heavy oil pre-add hydrogen；Described is pre- The reaction temperature for adding hydrogen is 370~430 DEG C, and hydrogen partial pressure is 12~19MPa, and gas-liquid volume ratio is 600~1200, air speed 0.5 ~1.0h-1。
The air speed refers under the defined conditions, the unit time, unit volume catalyst handled by gas flow, Unit is m3/(m3Catalyst h) can be reduced to h-1。
The hydrogen supply of heavy oil can be improved in the heavy oil pre-add hydrogen, to further decrease the viscosity of coal.
Preferably, the preparation method of high matching coal above-mentioned, further comprising the steps of:
The coal hydrogenation reaction includes 350~525 DEG C of heavy distillate in the product of acquisition；
The heavy distillate is mixed with the heavy oil, then is mixed in a certain ratio with coal dust, new oily coal is prepared Slurry；
In terms of mass percentage, the additive amount of the heavy distillate is 5%~35%.
Coal and heavy oil are total to hydrogenation reaction, obtain the products such as gasoline, diesel oil, wax oil (350~525 DEG C of fractions).By The study found that this wax oil part is added in new coal, the viscosity of coal can be reduced, and it is with coal, heavy oil It forms similar, according to the principle of similar compatibility, dissolving each other for coal and heavy oil can be improved, making it easier to dissolve each other each other is one Coexisting body can further decrease the viscosity of coal, convenient for pumping, and further strengthen the synergistic effect of coal and heavy oil, promote Into hydrogenation reaction, coal conversion ratio, heavy oil conversion rate and oil yield are improved.
Preferably, the preparation method of high matching coal above-mentioned, wherein catalyst selected by hydrogenation reaction can be with It is Fe catalyst, Mo catalyst, Ni/Mo composite catalyst.
It is described further below by more specifically embodiment.Wherein, table 1 is in following each embodiments and comparative example Coal list used, table 2 are heavy oil list used in following each embodiments and comparative example.
Coal list used in 1 embodiment of table and comparative example
Note: the ash content in table is the ash content after washing.
Heavy oil list used in 2 embodiment of table and comparative example
Embodiment 1
It is 3.0% by 1# coal drying to the moisture after washing, is then crushed and wears into 0.074mm coal dust below, by coal Powder is mixed with 1# heavy oil 4:6 in mass ratio, and the Fe catalyst of 1% (on the basis of the total amount of coal and heavy oil) is added, in 120r/ 45min is stirred under the agitating paddle of min, part coal is taken out and stands 30min at 90 DEG C, does not find that pulverized coal particle sedimentation is existing As.
The prepared coal viscosity of the above method is 673mPas (90 DEG C), this coal is carried out hydrogenation reaction, this The coal performance of embodiment and hydrogenation reaction the results are shown in Table 3.
Embodiment 2
By after washing 2# coal and 3# coal 5:5 in mass ratio to mix and dry to moisture be 2.1%, then be crushed and ground At 0.15mm coal dust below.
3# heavy oil is subjected to pre-add hydrogen at hydrogen partial pressure 17MPa, 430 DEG C of temperature, the 3# heavy oil after pre-add hydrogen is steamed It evaporates to obtain and is greater than 350 DEG C of heavy distillates.
Then coal dust is mixed with the 350 DEG C of heavy distillates that are greater than that 3# heavy oil pre-add hydrogen obtains by 3:7, is added 1% (with coal On the basis of the total amount of heavy oil) Fe catalyst, in the agitating paddle and lower stirring 60min of 120r/min, while following with pump Circulation is dynamic, takes out part coal and stands 30min at 90 DEG C, does not find pulverized coal particle sedimentation phenomenon.
The prepared coal viscosity of the above method is 648mPas (90 DEG C), this coal is carried out hydrogenation reaction, this The coal performance of embodiment and hydrogenation reaction the results are shown in Table 3.
Embodiment 3
It is 3.5% by 4# coal drying to the moisture after washing, is being crushed and is wearing into 0.15mm coal dust below, by coal Powder and 2# heavy oil and 5# heavy oil are mixed in 4:3:3 ratio, and the Mo catalyst of 200mg/kg is added, 70r/min agitating paddle and Lower stirring 120min, while circulating with pump take out part coal and stand 30min at 90 DEG C, do not find coal dust Particle sedimentation phenomenon.
The prepared coal viscosity of the above method is 975mPas (90 DEG C), and coal is carried out hydrogenation reaction, this reality The coal performance and hydrogenation reaction for applying example the results are shown in Table 3.
Embodiment 4
By after washing 4# coal and 5# coal 6:4 in mass ratio mix and dry to moisture be 0.7%, be broken into 0.074mm coal dust below, (370~500 DEG C) of heavy distillate that coal dust and 4# heavy oil and hydrogenation reaction are generated press 4:4:2 ratio Example mixing, is added the Ni/Mo composite catalyst of 200mg/kg, in the agitating paddle and lower stirring 100min of 100r/min, while companion There is circulating for pump, takes out part coal and stand 30min at 90 DEG C, do not find pulverized coal particle sedimentation phenomenon.
The prepared coal viscosity of the above method is 457mPas (90 DEG C), and coal is carried out hydrogenation reaction, this reality The coal performance and hydrogenation reaction for applying example the results are shown in Table 3.
Comparative example
It is 0.7% by 5# coal drying to the moisture after washing, is being crushed and is being worn into 0.074mm coal dust below, it will Coal dust and 4# heavy oil are mixed in 4:6 ratio, and the Ni/Mo composite catalyst of 200mg/kg is added, 100r/min agitating paddle and Lower stirring 15min takes out part coal and stands 30min at 90 DEG C, there is pulverized coal particle sedimentation phenomenon.
The prepared coal viscosity of the above method is 1157mPas (90 DEG C), and coal is carried out hydrogenation reaction, this The coal performance of comparative example and hydrogenation reaction the results are shown in Table 3.
Coal hydrogenation reaction in the present invention, coal conversion ratio, heavy oil conversion rate, oil yield difference are in accordance with the following methods It tests and calculates:
It is anhydrous before coal conversion ratio=(moisture-and-ash-free basis coal weight after moisture-and-ash-free basis coal weight-reaction before reacting)/reaction Ash free basis coal weight × 100%；
> 525 DEG C of heavy oil conversion rates=(before reaction > 525 DEG C of heavy oil weight+reactions before after moisture-and-ash-free basis coal weight-reaction Moisture-and-ash-free basis coal weight after > 525 DEG C of heavy oil weight-reactions)/(before reaction > 525 DEG C of heavy oil weight+reactions before moisture-and-ash-free basis Coal weight) × 100%；
Moisture-and-ash-free basis before<525 DEG C of distillates/(before reaction>525 DEG C of heavy oil weight+reactions that oil yield=reaction obtains Coal weight).
The matching of the coal is high, is mainly reflected in three aspects: first is that the stability of coal is good, it is not easy to There is the phenomenon that pulverized coal particle sedimentation；Second is that coal viscosity wants moderate, to facilitate pumping, mass transfer and the heat transfer of coal；One As characterized by the viscosity of coal；Third is that when high matching coal is pumped to reactor progress hydrogenation reaction, meeting Strengthen the synergistic effect between coal and heavy oil, to improve coal conversion ratio, heavy oil conversion rate and oil yield.
The result of 3 coal performance of table and hydrogenation reaction
The coal viscosity and its stability prepared by comparing the embodiment of the present invention 1 to embodiment 4 and comparative example, And coal is subjected to hydrogenation reaction, test coal conversion ratio, heavy oil conversion rate and the oil yield of each reaction.
Data as shown in Table 3 above, as resulting performance data as it can be seen that coal used in embodiment 1 to 4 meets this hair Oil can be improved by the comprehensive regulation to coal and heavy oil and coal Pulping conditions in index request described in bright technical solution The stability of coal slurry can transport property and reactivity, and the high conversion rate of coal is made to be higher than 80% in 90%, > 525 DEG C of heavy oil conversion rate, Oil yield is more than 70%；And in comparative example, the volatile matter of coal is lower, inertinite content is higher, and heavy oil viscosity is larger, and when slurrying Between it is short, the viscosity that the effect of many factors eventually leads to the coal is larger, and the stability of coal is poor, and is adding hydrogen Coal conversion ratio, heavy oil conversion rate and oil yield in reaction is lower.
Technical characteristic in the claims in the present invention and/or specification can be combined, and a combination thereof mode is not limited to weigh The combination obtained in benefit requirement by adduction relationship.It is combined by the technical characteristic in claim and/or specification The technical solution and protection scope of the present invention arrived.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, this hair is still fallen within In the range of bright technical solution.

Claims (10)

1. a kind of preparation method of high matching coal, which is characterized in that itself the following steps are included:
1) coal washing, broken and drying, wear into coal dust for the coal after drying；
2) coal dust and heavy oil are mixed in a certain ratio；
3) catalyst is added, coal is made in stirring；
Wherein, the coal meets claimed below:
In terms of mass percentage, moisture-and-ash-free basis volatile matter >=37%；Number ratio >=0.75 of its hydrogen, carbon atom；It goes Mineral base inertinite content≤20%；Its reflectance of vitrinite Rmax≤0.65；
The heavy oil is selected from petroleum based heavy fuel oils and/or coal base weight oil, meets claimed below:
In terms of mass percentage, ash content≤1.0%；Content of impurities≤0.6% and/or coal base of its petroleum based heavy fuel oils Toluene insolubles content≤9.0% of heavy oil；Its dynamic viscosity≤1500mPas at 100 DEG C；The number of its hydrogen, carbon atom Than being 0.7~1.70；Its aromaticity is greater than 0.20.
2. the preparation method of high matching coal according to claim 1, which is characterized in that
In terms of dry matrices amount percentage composition, pit ash≤12% after step 1) washing.
3. the preparation method of high matching coal according to claim 1, which is characterized in that
In terms of dry matrices amount percentage composition, moisture≤4% of coal after step 1) is dry.
4. the preparation method of high matching coal according to claim 1, which is characterized in that
Partial size≤0.15mm of the coal dust.
5. the preparation method of high matching coal according to claim 1, which is characterized in that
The coal is selected from least one of lignite, jet coal, dross coal, weakly caking coal or bottle coal.
6. the preparation method of high matching coal according to claim 1, which is characterized in that
The petroleum based heavy fuel oils are selected from least one of shale oil, heavy crude, viscous crude, catalytic cracked oil pulp, residual oil；
The coal base weight oil is selected from least one of high temperature coal-tar, medium temperature coal tar, coalite tar or gasification tar.
7. the preparation method of high matching coal according to claim 1, which is characterized in that
In terms of mass percentage, the content of coal dust is 20%~50% in the coal.
8. the preparation method of high matching coal according to claim 1, which is characterized in that
The stirring is using agitating paddle mechanical stirring or using pump circulation flowing stirring, mixing time >=0.5h.
9. the preparation method of high matching coal according to claim 1, which is characterized in that
By the heavy oil pre-add hydrogen；
The reaction temperature of the pre-add hydrogen be 370~430 DEG C, hydrogen partial pressure be 12~19MPa, gas-liquid volume ratio be 600~ 1200, air speed is 0.5~1.0h-1。
10. the preparation method of high matching coal according to claim 1, which is characterized in that it further includes following step It is rapid:
The coal hydrogenation reaction includes 350~525 DEG C of heavy distillate in the product of acquisition；
The heavy distillate is mixed with the heavy oil, then is mixed in a certain ratio with coal dust, new coal is prepared；
In terms of mass percentage, the additive amount of the heavy distillate is 5%~35%.
CN201910407326.9A 2019-05-16 2019-05-16 Preparation method of high-matching oil coal slurry Active CN110144249B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910407326.9A CN110144249B (en) 2019-05-16 2019-05-16 Preparation method of high-matching oil coal slurry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910407326.9A CN110144249B (en) 2019-05-16 2019-05-16 Preparation method of high-matching oil coal slurry

Publications (2)

Publication Number Publication Date
CN110144249A true CN110144249A (en) 2019-08-20
CN110144249B CN110144249B (en) 2021-08-13

Family

ID=67595479

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910407326.9A Active CN110144249B (en) 2019-05-16 2019-05-16 Preparation method of high-matching oil coal slurry

Country Status (1)

Country Link
CN (1) CN110144249B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114486629A (en) * 2021-12-22 2022-05-13 煤炭科学技术研究院有限公司 Method for evaluating matching performance of coal slurry of kerosene co-refined oil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1869159A (en) * 2006-06-27 2006-11-29 神华集团有限责任公司 Method of directly liquifying coal
CN101333448A (en) * 2008-07-09 2008-12-31 煤炭科学研究总院 Direct liquefaction process of coal by replacing circling solvent with petroleum or petroleum refining byproduct
CN101597526A (en) * 2008-06-02 2009-12-09 金军 Method, product and the purposes of the liquid fuel in a kind of coal oil-gas reservoir of gathering
CN102041015A (en) * 2009-10-22 2011-05-04 金军 Method for preparing liquid fuel from coal petrography oil-gas reservoir
CN106906001A (en) * 2017-04-26 2017-06-30 煤炭科学技术研究院有限公司 The coal of inertinite content high and the method for mink cell focus coprocessing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1869159A (en) * 2006-06-27 2006-11-29 神华集团有限责任公司 Method of directly liquifying coal
CN101597526A (en) * 2008-06-02 2009-12-09 金军 Method, product and the purposes of the liquid fuel in a kind of coal oil-gas reservoir of gathering
CN101333448A (en) * 2008-07-09 2008-12-31 煤炭科学研究总院 Direct liquefaction process of coal by replacing circling solvent with petroleum or petroleum refining byproduct
CN102041015A (en) * 2009-10-22 2011-05-04 金军 Method for preparing liquid fuel from coal petrography oil-gas reservoir
CN106906001A (en) * 2017-04-26 2017-06-30 煤炭科学技术研究院有限公司 The coal of inertinite content high and the method for mink cell focus coprocessing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114486629A (en) * 2021-12-22 2022-05-13 煤炭科学技术研究院有限公司 Method for evaluating matching performance of coal slurry of kerosene co-refined oil

Also Published As

Publication number Publication date
CN110144249B (en) 2021-08-13

Similar Documents

Publication Publication Date Title
US4808194A (en) Stable aqueous suspensions of slag, fly-ash and char
CN105647578A (en) Oil and coal mixing hydrogenation refining technology and equipment
WO2006010330A1 (en) A process for direct liquefaction of coal
JPH026853A (en) Method for producing a catalyst for hydrogenation and method for hydrogenating conversion with use of the catalyst
US20100280301A1 (en) Process for reducing the oxygen content of high-oxygen feedstocks
CN102260529A (en) Combined method for processing inferior heavy oil
US4024076A (en) Process for producing granular sulfurized material, granular carbon or granular activated carbon
CN107083265A (en) A kind of burnt method of the jet coal of supplying at high proportion production high intensity high response gasification
CN104419439B (en) A kind of direct coal liquefaction process of two-stage hydrogenation
CN110144249A (en) The preparation method of high matching coal
CN108940602B (en) Collecting agent for flotation of weakly sticky coal slime and flotation method
CN102031137B (en) Weak catalytic cracking processing method for residual oil
US10526202B2 (en) Process for production of high quality syngas through regeneration of coked upgradation agent
CN101705104B (en) Pulverized coal activator and coking coal prepared from same
CN108456550B (en) External circulation type reaction device and kerosene co-refining method
CN109929592A (en) A kind for the treatment of process and system of ethylene bottom oil
CN108865253A (en) The method of coal Direct Hydrogenation liquefaction richness production aromatic hydrocarbons
RU2288940C1 (en) Process for thermochemical processing of heavy petroleum residues
CN109174464B (en) Collecting agent for flotation of non-sticky coal slime and flotation method
CN108342219B (en) Heavy oil and oil coal hydrogenation process and method for processing self-produced heavy distillate oil thereof
CN112111292A (en) Coke matched with waste activated carbon and coking method
CN110330816A (en) A kind of formula oil and preparation method thereof for production of carbon black
CN102031136A (en) Processing method of heavy hydrocarbon oil raw material
US2012318A (en) Process of hydrogenating carbonaceous materials
CN101144032B (en) Preparation method for cleaning diesel oil

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
GR01 Patent grant
GR01 Patent grant