CN106318422A - Method and device for treating direct coal liquefaction residues - Google Patents
Method and device for treating direct coal liquefaction residues Download PDFInfo
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- CN106318422A CN106318422A CN201610805533.6A CN201610805533A CN106318422A CN 106318422 A CN106318422 A CN 106318422A CN 201610805533 A CN201610805533 A CN 201610805533A CN 106318422 A CN106318422 A CN 106318422A
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- gas
- raw material
- liquefied residue
- coal
- coke
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G9/005—Coking (in order to produce liquid products mainly)
Abstract
The invention provides a method and a device for treating direct coal liquefaction residues. The device comprises a raw material supply unit, a pyrolytic reaction unit and an oil gas recovery unit, wherein the raw material supply unit is used for providing direct coal liquefaction residue melted liquid or slurry containing the direct coal liquefaction residues; the pyrolytic reaction unit is provided with a raw material inlet and a gas-phase product outlet, and the raw material inlet is connected with the raw material supply unit through a raw material delivery pipeline; the oil gas recovery unit is connected with the gas-phase product outlet through a gas-phase product delivery pipeline. The device has the advantages that the decomposition efficiency of the direct coal liquefaction residues is improved, the tar yield is further increased, and coke can be used as fuel directly; the hazardous waste performance of the direct coal liquefaction residues is neutralized, so that use ratio is greatly increased and economic benefits are greatly enhanced.
Description
Technical field
The present invention relates to coal chemical technology, in particular to processing means and the process of a kind of coal directly-liquefied residue
Method.
Background technology
Coal directly-liquefied residue is the non-targeted product of DCL/Direct coal liquefaction process, accounts for the 30wt% of coal feeding amount.It is one
Plant high ash, high-sulfur and the material of high heating value, mainly by non-distillate carburetion (normal hexane soluble substance), Colophonium (normal hexane insoluble four
Hydrogen furan soluble substance), unconverted coal and inanimate matter composition.Non-distillate carburetion (heavy coal liquids) and Colophonium account for the direct liquid of coal
Changing the 50wt% of residue, be mainly made up of multi-ring condensed aromatics, it has, and aromaticity is high, carbon content is high, easily polymerization or crosslinking
Feature.Different with the characteristic of asphalt and coal tar asphalt, the bitumen in coal directly-liquefied residue is very
The raw material being suitable as preparing carbon material is a kind of preciousness and the carbon resource of uniqueness.Unconverted coal refers in residue insoluble in four
The organic matter of hydrogen furan, accounts for the 30wt% of residue total amount, has higher calorific value.Inanimate matter is mainly by the mineral in coal
Catalyst composition with additional, accounts for the 20wt% of residue total amount.
Coal directly-liquefied residue is also a kind of solid danger refuse, and the most rationally and efficiently utilizing coal directly-liquefied residue is coal
The difficult problem that liquefaction process is in the urgent need to address.The method of Now Domestic large-scale application coal directly-liquefied residue is by direct for coal liquid
Changing residue and be deployed into water-coal-slurry with coal, prepare synthesis gas and hydrogen as gasification furnace raw material, this is the big rule of coal directly-liquefied residue
Mould application have found outlet, it is achieved that the recycling of residue.But coal directly-liquefied residue, tetrahydrochysene furan the most therein
The utilization of soluble substance of muttering (bitumen) unrealized high added value, thus cause the economic benefit of DCL/Direct coal liquefaction industry not in fact
Now maximize.
Summary of the invention
Present invention is primarily targeted at processing means and the processing method that a kind of coal directly-liquefied residue is provided, to solve
The problem that the utilization rate of existing coal directly-liquefied residue is relatively low.
To achieve these goals, one aspect of the invention provides the processing means of a kind of coal directly-liquefied residue, should
Processing means includes: raw material supply unit, for providing the fused solution of coal directly-liquefied residue or containing coal directly-liquefied residue
Serosity；Pyrolytic reaction unit, is provided with feed(raw material)inlet and gas phase product exit, and feed(raw material)inlet and raw material supply unit are by former
Material conveying tube road is connected；And petroleum vapor recovery unit, it is connected by gas-phase product transfer pipeline with gas-phase product outlet.
Further, processing means also includes atomising device, is arranged on feed(raw material)inlet；Preferably atomising device is with cold
But the single fluid nebulizer of chuck or dual-flow atomizer.
Further, when raw material supply unit is for providing the fused solution of coal directly-liquefied residue, raw material supply unit
Including: coal directly-liquefied residue feeding mechanism；Sample-melting device, is connected by feedstock transportation pipeline with feed(raw material)inlet, and molten sample dress
Put and be connected by coal directly-liquefied residue transfer pipeline with coal directly-liquefied residue feeding mechanism.
Further, when raw material supply unit is for providing the serosity containing coal directly-liquefied residue, raw material supply list
Unit includes: coal directly-liquefied residue feeding mechanism；Solvent supply unit；And coal directly-liquefied residue serosity feeding mechanism, coal
Direct liquefaction residue serosity feeding mechanism and coal directly-liquefied residue feeding mechanism are by coal directly-liquefied residue transfer pipeline phase
Even, it is connected by solvent delivery pipeline with solvent supply unit, and is connected by feedstock transportation pipeline with feed(raw material)inlet.
Further, petroleum vapor recovery unit includes: dust arrester, is provided with oil gas vent and gas phase product inlet, gas phase
Product inlet is connected through gas-phase product transfer pipeline with gas-phase product outlet；And chiller, defeated by oil gas with oil gas vent
Pipeline is sent to be connected.
Further, processing means also includes high-temperature gas feeding unit, high-temperature gas feeding unit and pyrolytic reaction list
Unit is connected through high-temperature gas transfer pipeline.
Further, institute's pyrolytic reaction unit is provided with the first coke export, dust arrester is provided with the second coke
Outlet, processing means also includes that coke collector unit, coke collector unit and the first coke export are through the first coke transfer pipeline
It is connected, and is connected through the second coke transfer pipeline with the second coke export.
To achieve these goals, another aspect of the present invention additionally provides the processing method of a kind of coal directly-liquefied residue,
Processing method includes: as raw material, the serosity of coal directly-liquefied residue fused solution or coal directly-liquefied residue is carried out pyrolytic reaction
Obtain gas-phase product and coke；And gas-phase product is carried out petroleum vapor recovery, obtain tar and coke.
Further, processing method is additionally included in before carrying out pyrolytic reaction, and raw material carries out the step being atomized.
Further, pyrolytic reaction includes directly contacting raw material with high-temperature gas carrying out pyrolytic reaction, high-temperature gas
Temperature is 600～1000 DEG C, and preferably high-temperature gas is less than the flue gas of 1wt% selected from nitrogen and/or oxygen content.
Further, processing method also includes that coal directly-liquefied residue is carried out melting obtains the step of fused solution, melting
The temperature of step be 270～350 DEG C.
Further, processing method also includes the step that coal directly-liquefied residue and solvent are mixed to get serosity, preferably
Coal directly-liquefied residue is 1:0.3～1 with the weight ratio of solvent.
Further, solvent is in the group of washing oil, carbolineum, liquefaction oil, coalite tar and high temperature coal-tar composition
One or more.
Further, the step of petroleum vapor recovery includes: gas-phase product is carried out dedusting and obtains oil gas and coke；And by oil gas
Carry out cooling and obtain tar.
Application technical scheme, is conducive to improving the decomposition efficiency of coal directly-liquefied residue, and then is conducive to carrying
The yield of high tar, the coke simultaneously obtained directly can also use as fuel, thus uses above-mentioned processing means direct to coal
Liquefied residue carries out process and is conducive to being greatly improved its utilization rate and economic benefit.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the coal directly-liquefied residue processing means of a kind of typical embodiment offer according to the present invention
Structural representation；
Fig. 2 shows a kind of coal directly-liquefied residue processing means preferred embodiment provided according to the present invention
Structural representation.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, raw material supply unit；11, coal directly-liquefied residue feeding mechanism；12, sample-melting device；13, solvent supply dress
Put；14, coal directly-liquefied residue serosity feeding mechanism；15, feed pump；101, feedstock transportation pipeline；20, pyrolytic reaction unit；
21, atomising device；201, gas-phase product transfer pipeline；202, the first coke transfer pipeline；30, petroleum vapor recovery unit；31, dedusting
Device；311, the second coke transfer pipeline；32, chiller；321, tar transfer pipeline；40, high-temperature gas feeding unit；
401, valve；50, coke collector unit；60, tar collector unit.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As described by background technology, the problem that the utilization rate of existing coal directly-liquefied residue is relatively low.In order to solve
Above-mentioned technical problem, the invention provides the processing means of a kind of coal directly-liquefied residue, and as depicted in figs. 1 and 2, this process fills
Put and include raw material supply unit 10, pyrolytic reaction unit 20 and petroleum vapor recovery unit 30；Wherein raw material supply unit 10 is used for carrying
Fused solution for coal directly-liquefied residue or the serosity containing coal directly-liquefied residue.Pyrolytic reaction unit 20 is provided with raw material and enters
Mouth and gas phase product exit, feed(raw material)inlet is connected by feedstock transportation pipeline 101 with raw material supply unit 10；And petroleum vapor recovery list
Unit 30 is connected by gas-phase product transfer pipeline 201 with gas-phase product outlet.
By the fused solution of coal directly-liquefied residue or the serosity containing coal directly-liquefied residue in pyrolytic reaction unit 20
Carry out pyrolytic reaction, obtain gas-phase product and coke, last gas-phase product through petroleum vapor recovery unit 30 reclaim after obtain tar and
Coke.
Use said apparatus that coal directly-liquefied residue carries out process and be conducive to improving its decomposition efficiency, and then be conducive to carrying
The yield of high tar, the coke simultaneously obtained directly can also use as fuel, thus uses above-mentioned processing means direct to coal
Liquefied residue carries out process and is conducive to being greatly improved its utilization rate and economic benefit.
Preferably, as depicted in figs. 1 and 2, arranging feed pump 15 on above-mentioned raw materials transfer pipeline 101, this can give former
The conveying of material oil provides power.
In a preferred embodiment, as depicted in figs. 1 and 2, processing means also includes atomising device 21, is arranged at
On feed(raw material)inlet.At the feed(raw material)inlet of pyrolytic reaction unit 20, arrange atomising device 21 can be atomized by raw material, thus
Be conducive to making that pyrolytic reaction carries out is more abundant, improve pyrolysis efficiency, and then be conducive to improving the productivity of tar.Preferably it is atomized
Device 21 is the single fluid nebulizer with cooling jacket or dual-flow atomizer.
In a preferred embodiment, as it is shown in figure 1, work as raw material supply unit 10 and be used for providing DCL/Direct coal liquefaction residual
During the fused solution of slag, raw material supply unit 10 includes coal directly-liquefied residue feeding mechanism 11 and sample-melting device 12, sample-melting device
12 are connected by feedstock transportation pipeline 101 with feed(raw material)inlet, and with coal directly-liquefied residue feeding mechanism 11 by the direct liquid of coal
Change residue transfer pipeline to be connected.
In the application, sample-melting device 12 is used for making coal directly-liquefied residue occur to melt, and finally gives fused solution.
In a preferred embodiment, as in figure 2 it is shown, contain the direct liquid of coal when raw material supply unit 10 is used for providing
When changing the serosity of residue, raw material supply unit 10 includes coal directly-liquefied residue feeding mechanism 11, solvent supply unit 13 and coal
Direct liquefaction residue serosity feeding mechanism 14, coal directly-liquefied residue serosity feeding mechanism 14 fills with coal directly-liquefied residue supply
Put 11 to be connected by coal directly-liquefied residue transfer pipeline, be connected by solvent delivery pipeline with solvent supply unit 13, and with
Feed(raw material)inlet is connected by feedstock transportation pipeline 101.
In above-mentioned processing means, petroleum vapor recovery unit 30 can use structure commonly used in the art.The most real in one
Executing in mode, as depicted in figs. 1 and 2, petroleum vapor recovery unit 30 includes dust arrester 31 and chiller 32, wherein dust arrester
31 are provided with oil gas vent and gas phase product inlet, and gas-phase product entrance exports through gas-phase product transfer pipeline with gas-phase product
201 are connected；Chiller 32 is connected by transportation pipeline with oil gas vent.
Oil gas in gas-phase product is separated with coke dust by petroleum vapor recovery unit 30 by dust arrester 31, so
The cooled device of rear oil gas 32 obtains tar and pyrolysis coal gas after cooling down.
Dust arrester 31 is preferably cyclone separator, this efficiency being conducive to improving solid-liquid separation.Chiller 32 is excellent
Elect spray column as, use the mode of spray washing to be conducive to improving the condensing rate of oil gas in spray column, and then improve tar
The response rate.
In above-mentioned processing means, in pyrolytic reaction unit 20, the presentation mode of thermal source can use supply commonly used in the art
Mode, such as heating.In a preferred embodiment, as depicted in figs. 1 and 2, above-mentioned processing means also includes high-temperature gas
Feeding unit 40, high-temperature gas feeding unit 40 is connected through high-temperature gas transfer pipeline with pyrolytic reaction unit 20.When needs make
When providing thermal source with high-temperature gas, open valve 401, make high-temperature gas feeding unit 40 be connected with pyrolytic reaction unit 20,
Fused solution is made to carry out pyrolytic reaction by the way of the fused solution in high-temperature gas with pyrolytic reaction unit 20 carries out heat exchange, this
Be conducive to the temperature-rise period making fused solution more gentle, steady and uniform, thus be conducive to improving the safety of pyrolytic reaction process
Property.
In a preferred embodiment, as depicted in figs. 1 and 2, institute's pyrolytic reaction unit 20 is provided with the first coke
Outlet, dust arrester 31 is provided with the second coke export, and processing means also includes coke collector unit 50, coke collector unit
50 are connected through the first coke transfer pipeline 202 with the first coke export, and with the second coke export through the second coke transfer pipeline
311 are connected.This is conducive to the coke of output in said apparatus is carried out centralized collection.
In a preferred embodiment, as depicted in figs. 1 and 2, above-mentioned processing means also includes tar collector unit
60, it is connected by tar transfer pipeline 321 with the chiller 32 of petroleum vapor recovery unit 30.This is conducive to entering the tar obtained
Row stores, in order to concentrates and processes.
In order to more preferably solve above-mentioned technical problem, present invention also offers the processing method of a kind of coal directly-liquefied residue,
This processing method includes: the serosity of coal directly-liquefied residue fused solution or coal directly-liquefied residue is carried out pyrolytic reaction and obtains gas
Phase product and coke；And gas-phase product is carried out petroleum vapor recovery, obtain tar and coke.
The serosity of coal directly-liquefied residue fused solution or coal directly-liquefied residue is carried out pyrolytic reaction, obtains gas-phase product
And coke, last gas-phase product obtains tar and a small amount of coke after petroleum vapor recovery.Use above-mentioned processing method direct to coal
Liquefied residue carries out process and is conducive to improving its decomposition efficiency, and then is conducive to improving the yield of tar, the coke simultaneously obtained
Directly can also use as fuel.Above-mentioned processing method is used significantly to carry after coal directly-liquefied residue is processed as can be seen here
High its utilization rate and economic benefit.
In a preferred embodiment, processing method is additionally included in before carrying out pyrolytic reaction, is carried out by fused solution
The step of atomization.Carry out pyrolytic reaction after making fused solution be atomized again, thus be conducive to making what pyrolytic reaction carried out more to fill
Point, improve pyrolysis efficiency and the productivity of tar.
In above-mentioned processing means, in pyrolytic reaction, the presentation mode of thermal source can use method of supplying commonly used in the art,
Such as heating.In a preferred embodiment, pyrolytic reaction includes directly contacting fused solution with high-temperature gas being pyrolyzed
Reaction, the temperature of high-temperature gas is 700～1000 DEG C.The mode using high-temperature gas and fused solution to carry out heat exchange makes fused solution
Carrying out pyrolytic reaction, this is conducive to the temperature-rise period making fused solution more gentle, steady and uniform, thus is conducive to improving pyrolysis
The safety of course of reaction.Preferably high-temperature gas is less than the flue gas of 1wt% selected from nitrogen and/or oxygen content.Nitrogen and oxygen-containing
Amount is relatively stable less than performance during the flue gas pyrolytic reaction of 1wt%, and will not be with fused solution generation chemical reaction.
In above-mentioned processing method, the temperature in melting step is to make selection coal directly-liquefied residue occur melted temperature equal
Can.In a preferred embodiment, above-mentioned processing method also includes that coal directly-liquefied residue is carried out melting is melted
The step of liquid, the temperature of the step of melting is 270～360 DEG C.The limit temperature of melting step is conducive within the above range
Improve melted effect further, improve coal directly-liquefied residue and be converted into the conversion ratio of fused solution.
In a preferred embodiment, above-mentioned processing method also includes mixing coal directly-liquefied residue and solvent
Step to serosity.Coal directly-liquefied residue is mixed with solvent the components such as the Colophonium that can make in DCL/Direct coal liquefaction slag and is dissolved into molten
In agent, as long as so that carrying out above-mentioned serosity heating the process achieving that atomization.Preferably coal directly-liquefied residue is with molten
The weight ratio of agent is 1:0.3～1.Coal directly-liquefied residue includes but not limited to aforementioned proportion scope with the weight ratio of solvent naphtha,
But controlled to be conducive to improving in the range of aforementioned proportion coal directly-liquefied residue dissolution rate in a solvent, simultaneously the most favourable
What during making pyrolytic reaction, coal directly-liquefied residue decomposed is more complete, and then improves the productivity of tar, improves coal direct
The utilization rate of liquefied residue.
In above-mentioned processing method, solution can select the solvent that in this area, coal directly-liquefied residue is conventional.Excellent in one
In the embodiment of choosing, solvent includes but not limited to washing oil, carbolineum, liquefaction oil, coalite tar and high temperature coal-tar composition
One or more in group.Above-mentioned several solvent is the product of DCL/Direct coal liquefaction process, thus selects above-mentioned several material conduct
Solvent advantageously reduces the impurity content in tar, and then is conducive to its subsequent use.
In above-mentioned processing method, those skilled in the art can select the concrete steps of petroleum vapor recovery.Preferred in one
In embodiment, the step of petroleum vapor recovery includes: gas-phase product is carried out dedusting and obtains oil gas and coke；And oil gas is carried out cold
But tar is obtained.The step using above-mentioned petroleum vapor recovery is conducive to improving the efficiency of petroleum vapor recovery.Preferably by cyclonic separation
Device carries out dedusting to gas-phase product at 300～450 DEG C.This is conducive to the separation efficiency improving oil gas with coke.Preferably go up
State cooling procedure to carry out in spray column, by spray oil, oil gas is cooled down, obtain tar, cooling procedure in not simultaneously
Solidifying gas (pyrolysis coal gas) is discharged from the top of spray column.
Being described in further detail the present invention below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Invent scope required for protection.
Embodiment 1,3 to 6 use device as shown in Figure 1 to process coal directly-liquefied residue；Embodiment 2 and 7
Use device as shown in Figure 2 that coal directly-liquefied residue is processed.
Embodiment 1
It is delivered to coal directly-liquefied residue in sample-melting device 12 carry out melting at 310 DEG C, obtains coal directly-liquefied residue
Fused solution, is delivered to atomising device 21 through feed pump 15 and is atomized.
The high temperature nitrogen of the fused solution after atomization and 600 DEG C is carried out pyrolysis in pyrolytic reaction unit 20 (pyrolysis tower) anti-
Should, obtain gas-phase product and solid slag (coke).
After the dedusting of above-mentioned gas-phase product removing dust device 31 (hot precipitator), obtain oil gas and solid slag (coke)；
Then carry out cooling down by oil gas in chiller 32 (spray column) and carried out petroleum vapor recovery.Coal directly-liquefied residue
The pyrolysis coal gas of the tar of 25%, the coke of 67% and 8% can be obtained after said method processes.
Embodiment 2
By weight 1:0.5, coal directly-liquefied residue is mixed to get mixture with liquefaction light oil, said mixture is added
Heat, to 200 DEG C, is delivered to pyrolytic reaction unit 20 (pyrolysis tower) through feed pump 15, with entrance pyrolytic reaction unit 20 after atomization
The flue gas of (pyrolysis tower) temperature 700 DEG C carries out pyrolytic reaction in carrying out, and obtains gas-phase product and coke.
After the dedusting of above-mentioned gas-phase product removing dust device 31 (hot precipitator), obtain oil gas and coke；
Then carry out cooling down by oil gas in chiller 32 (spray column) and carried out petroleum vapor recovery.Coal directly-liquefied residue
The pyrolysis coal gas of the tar of 27%, the coke of 64% and 9% can be obtained after said method processes.
Embodiment 3
On the basis of embodiment 1, the fused solution after atomization is pyrolyzed in pyrolytic reaction unit 20 (pyrolysis tower)
Reaction, pyrolysis temperature is 600 DEG C, obtains gas-phase product and solid slag (coke), and other conditions are same as in Example 1.The direct liquid of coal
Change residue and can obtain the pyrolysis coal gas of the tar of 22%, the coke of 71% and 7% after said method processes.
Embodiment 4
On the basis of embodiment 1, the temperature of high temperature nitrogen is 500 DEG C, and other conditions are same as in Example 1.Coal is direct
Liquefied residue can obtain the pyrolysis coal gas of the tar of 15% and the coke of 79% and 6% after said method processes.
Embodiment 5
On the basis of embodiment 1, smelting temperature is 270 DEG C, and other conditions are same as in Example 1.DCL/Direct coal liquefaction is residual
Slag can obtain the pyrolysis coal gas of the tar of 20% and the coke of 69% and 11% after said method processes.
Embodiment 6
On the basis of embodiment 1, smelting temperature is 250 DEG C, and other conditions are same as in Example 1.DCL/Direct coal liquefaction is residual
Slag can obtain the pyrolysis coal gas of the tar of 20% and the coke of 72% and 8% after said method processes.
Embodiment 7
By weight 1:0.2, coal directly-liquefied residue is mixed to get mixture with liquefaction light oil, other conditions and enforcement
Example 2 is identical.Coal directly-liquefied residue can obtain the tar of 29% and the coke of 62% and the heat of 9% after said method processes
Solve coal gas.
Comparative example 1
After coal directly-liquefied residue is mixed in 1:20 ratio with solid coal ash, enter rotary dry distillation stove and be pyrolyzed,
After obtain 7% tar, the coke of 89% and the pyrolysis coal gas of 4%.Treatment effeciency is low, and oil yield is low, and energy consumption is high.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
Comparing embodiment 1 and 3 understands, and uses high-temperature gas to provide the effect of thermal source directly to add owing to using for pyrolytic process
The mode of heat provides thermal source；Comparing embodiment 1 and 4 understands, and is conducive to by the limit temperature of high-temperature gas in certain scope
Improve the coal-tar middle oil productivity of coal directly-liquefied residue and pyrolysis efficiency, thus be conducive to improving its economic benefit；Comparing embodiment
1, the utilization rate of coal directly-liquefied residue is conducive to improving in smelting temperature is limited to knowable to 5,6 certain scope；The most real
Execute example 2 and 7 to understand, be conducive to improving coal tar in the weight ratio of coal directly-liquefied residue Yu solvent is limited to certain scope
Productivity, and then improve its economic benefit.Comparing embodiment 1 to 7 understands with comparative example 1, and the coal using the application to provide is direct
The Application way of liquefied residue is conducive to improving its utilization ratio and economic benefit.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (14)
1. the processing means of a coal directly-liquefied residue, it is characterised in that described processing means includes:
Raw material supply unit (10), for providing the fused solution of described coal directly-liquefied residue or residual containing described DCL/Direct coal liquefaction
The serosity of slag；
Pyrolytic reaction unit (20), is provided with feed(raw material)inlet and gas phase product exit, described feed(raw material)inlet and described raw material supply
Unit (10) is connected by feedstock transportation pipeline (101)；And
Petroleum vapor recovery unit (30), is connected by gas-phase product transfer pipeline (201) with the outlet of described gas-phase product.
Processing means the most according to claim 1, it is characterised in that described processing means also includes atomising device (21),
It is arranged on described feed(raw material)inlet；The most described atomising device (21) is the single fluid nebulizer with cooling jacket or two-fluid
Nebulizer.
Processing means the most according to claim 1 and 2, it is characterised in that when described raw material supply unit (10) is used for carrying
When supplying the fused solution of described coal directly-liquefied residue, described raw material supply unit (10) including:
Coal directly-liquefied residue feeding mechanism (11)；
Sample-melting device (12), is connected by described feedstock transportation pipeline (101) with described feed(raw material)inlet, and described sample-melting device
(12) it is connected by coal directly-liquefied residue transfer pipeline with described coal directly-liquefied residue feeding mechanism (11).
Processing means the most according to claim 1 and 2, it is characterised in that when described raw material supply unit (10) is used for carrying
When supplying the serosity containing described coal directly-liquefied residue, described raw material supply unit (10) including:
Coal directly-liquefied residue feeding mechanism (11)；
Solvent supply unit (13)；And
Coal directly-liquefied residue serosity feeding mechanism (14), described coal directly-liquefied residue serosity feeding mechanism (14) and described coal
Direct liquefaction residue feeding mechanism (11) is connected by coal directly-liquefied residue transfer pipeline, with described solvent supply unit (13)
It is connected by solvent delivery pipeline, and is connected by described feedstock transportation pipeline (101) with described feed(raw material)inlet.
Processing means the most according to claim 1, it is characterised in that described petroleum vapor recovery unit (30) including:
Dust arrester (31), is provided with oil gas vent and gas phase product inlet, described gas-phase product entrance and described gas-phase product
Export and be connected through described gas-phase product transfer pipeline (201)；And
Chiller (32), is connected by transportation pipeline with described oil gas vent.
Processing means the most according to claim 5, it is characterised in that described processing means also includes that high-temperature gas supply is single
Unit (40), described high-temperature gas feeding unit (40) is connected through high-temperature gas transfer pipeline with described pyrolytic reaction unit (20).
Processing means the most according to claim 6, it is characterised in that be provided with first in institute's pyrolytic reaction unit (20) burnt
Charcoal exports, and described dust arrester (31) is provided with the second coke export, and described processing means also includes coke collector unit
(50), described coke collector unit (50) is connected through the first coke transfer pipeline (202) with described first coke export, and with institute
State the second coke export to be connected through the second coke transfer pipeline (311).
8. the processing method of a coal directly-liquefied residue, it is characterised in that the treating method comprises:
The serosity of coal directly-liquefied residue fused solution or coal directly-liquefied residue is carried out pyrolytic reaction as raw material and obtains gas phase
Product and coke；And
Described gas-phase product is carried out petroleum vapor recovery, obtains tar and coke.
Processing method the most according to claim 8, it is characterised in that described processing method is additionally included in and carries out described pyrolysis
Before reaction, described raw material is carried out the step being atomized.
Processing method the most according to claim 9, it is characterised in that described pyrolytic reaction includes described raw material with high
Wet body directly contacts and carries out described pyrolytic reaction, and the temperature of described high-temperature gas is 600～1000 DEG C, the most described High Temperature Gas
Body is the flue gas less than 1wt% selected from nitrogen and/or oxygen content.
11. processing methods according to claim 8, it is characterised in that described processing method also includes direct for described coal
Liquefied residue carries out melting and obtains the step of described fused solution, and the temperature of the step of described melting is 270～350 DEG C.
12. processing methods according to claim 8, it is characterised in that described processing method also includes direct for described coal
Liquefied residue and solvent are mixed to get the weight ratio of the step of described serosity, the most described coal directly-liquefied residue and described solvent
For 1:0.3～1.
13. processing methods according to claim 12, it is characterised in that described solvent selected from washing oil, carbolineum, liquefaction oil,
One or more in the group of coalite tar and high temperature coal-tar composition.
14. according to Claim 8 to the processing method according to any one of 13, it is characterised in that the step of described petroleum vapor recovery
Including:
Described gas-phase product is carried out dedusting and obtains oil gas and described coke；And
Described oil gas is carried out cooling and obtains described tar.
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| CN109207176A (en) * | 2017-06-29 | 2019-01-15 | 神华集团有限责任公司 | Pyrolysis installation, pyrolysis system and method for pyrolysis |
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