CN108893130A - A kind of fine coal destructive distillation device and fine coal method for destructive distillation - Google Patents
A kind of fine coal destructive distillation device and fine coal method for destructive distillation Download PDFInfo
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- CN108893130A CN108893130A CN201810940274.7A CN201810940274A CN108893130A CN 108893130 A CN108893130 A CN 108893130A CN 201810940274 A CN201810940274 A CN 201810940274A CN 108893130 A CN108893130 A CN 108893130A
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- fine coal
- destructive distillation
- gas
- cyclone separator
- semicoke
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Classifications
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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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- 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
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/16—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with moving solid heat-carriers in divided form
-
- 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
- C10G55/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process
- C10G55/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only
- C10G55/04—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only including at least one thermal cracking step
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
Abstract
The present invention relates to a kind of fine coal destructive distillation device and fine coal method for destructive distillation, belong to coal chemical industry and Petroleum Processing Technology field.Gas cooler is connected to coke gasification furnace and the first cyclone separator, and the first cyclone separator is connected to the first collection chamber and the first dense bed.One end of fine coal carbonization reactor is set to sedimentation stripper, and the other end is connected to coke gasification furnace and is equipped with fine coal feed inlet and heavy oil nozzle.Second cyclone separator is connected to fine coal carbonization reactor, the second collection chamber and the second dense bed, and semicoke cooler is connected to oil gas stripping section.First inclined tube is connected to oil gas stripping section and the first dense bed.The destructive distillation device structure is simple, invests low, flexible operation；Device smokeless, coke gasification generates gas can further synthesizing methanol or even light-end products.Method for destructive distillation includes：Coke gasification, fine coal destructive distillation and the heavy oil pyrolysis recycled using above-mentioned fine coal destructive distillation device.This method is simple, easy to operate, high-efficient.
Description
Technical field
The present invention relates to coal chemical industries and Petroleum Processing Technology field, and in particular to a kind of fine coal destructive distillation device and fine coal are dry
Evaporate method.
Background technique
As world petroleum resource is increasingly deficient, both at home and abroad using dry distillation of coal technology production coal tar substitution petroleum resources
As important additional project.When the temperature of coal charge is higher than 100 DEG C, the moisture in coal is evaporated；Temperature be increased to 200 DEG C with
When upper, released in coal in conjunction with water；At up to 350 DEG C or more, binding coal starts to soften, and is further formed sticky gel
(this phenomenon does not occur for mud coal, lignite etc.)；It is precipitated to 400-500 DEG C of most of dry gas and tar, claims a thermal decomposition product；?
450-550 DEG C, thermal decomposition continues, and residue gradually retrogradation and is formed by curing semicoke；Higher than 550 DEG C, semicoke continues to decompose,
It is precipitated remaining volatile matter (main component is hydrogen), semicoke is weightless to be shunk simultaneously, forms crackle；Temperature is higher than 800 DEG C,
Semicoke volume-diminished is hardened to form porous coke.When destructive distillation carries out in cell-type gas retort, a thermal decomposition product and red heat
Coke and high-temperature kiln wall are in contact, and secondary thermal decomposition occurs, and forming secondary thermal decomposition product, (coke-stove gas and other refining pyrolysis are learned
Product).
The product of the dry distillation of coal is coal, coal tar oil and gas.The yield of dry distillation of coal product and composition depend on raw material coal quality,
Processing conditions (mainly temperature and time).With the difference of destructive distillation final temperature, dry distillation of coal product is also different.Low temperature distillation solid produces
Object is the black semicoke of short texture, and gas yield is low, and tar yield is high；High-temperature retorting solid product is then the silver of compact structure
Grey coke, dry gas yied is high and tar yield is low.The yield of medium temperature carbonization product, then between low temperature distillation and high-temperature retorting it
Between.The dry gas main component generated during the dry distillation of coal is hydrogen and methane, can be used as fuel or industrial chemicals.High-temperature retorting master
It is used for production metallurgy coke, resulting tar to be the mixture of aromatic hydrocarbon, heterocyclic compound, is industrial acquisition aromatic hydrocarbon
Important sources；Low temperature distillation coal tar contains more alkane than high temperature tar, is one of artificial petroleum important sources.
Powder fluidized retorting technique is to crush lumped coal for fine powder and high-temperature heat carrier under fluidized state, directly or
The process of the concurrent heat decomposition reaction of transmission of heat by contact is connect, feature includes：Coal dust destructive distillation calorific intensity is high, dry distillation rate is fast, coal tar
Oil yield is high, quick separating can be obtained in gas-solid.
In current retorting technique, at least have the following disadvantages：
One, ash, which melts poly- fine coal destructive distillation, can increase the quantity combusted for generating semicoke；The quantity combusted conference for generating semicoke keeps burning single
The equipment size of member is big, and plant investment is caused to increase；Ash melts the height of the content of ashes in poly- the produced semicoke of fine coal destructive distillation.
Two, fluidizing agent and heat carrier as destructive distillation raw material are recycled using high-temperature water gas, high-temperature gas is recycled to gas
Gas compressor proposes higher material requirement；The circulation compression device of high-temperature gas is in high harsh operating condition always, by shadow
The long-term operation of device is rung, it is serious to restrict the enlarged plant construction for using the technology.
Three, it is not directed to hot-working pyrolysis and the inferior heavy oil fluidisation thermal upgrading of inferior heavy oil substantially.
Summary of the invention
One of the objects of the present invention is to provide a kind of fine coal destructive distillation devices, and the fine coal destructive distillation device structure is simple, investment
It is low, flexible operation；Device smokeless, coke gasification generates gas can further synthesizing methanol or even light-end products.
The second object of the present invention is to provide a kind of fine coal method for destructive distillation, and this method is simple, and this method is simple, easily grasps
Make, it is high-efficient.
The present invention solves its technical problem and adopts the following technical solutions to realize：
The present invention proposes a kind of fine coal destructive distillation device comprising coke gasification furnace, gas cooler, the first cyclonic separation
Device, fine coal carbonization reactor, sedimentation stripper, the second cyclone separator, semicoke cooler and the first inclined tube.
Coke gasification furnace includes the first collection chamber and the first dense bed positioned at both ends, the inlet end and coke of gas cooler
One end close to the first collection chamber of charcoal gasification furnace is connected to, the feed end of the outlet side of gas cooler and the first cyclone separator
Connection, the gas phase discharge end of the first cyclone separator is connected to the first collection chamber, the solid phase discharge end of the first cyclone separator and
The connection of first dense bed.
Sedimentation stripper includes positioned at second collection chamber and oil gas stripping section at both ends and close to the of oil gas stripping section
Two dense beds.
One end of fine coal carbonization reactor is set between the second dense bed and the second collection chamber, and the other end stretches out sedimentation vapour
It mentions device and is connected to one end far from the first collection chamber of coke gasification furnace；The stretching sedimentation stripper of fine coal carbonization reactor
One end is equipped with fine coal feed inlet and heavy oil nozzle.
The feed end of second cyclone separator is connected to the one end of fine coal carbonization reactor being located in sedimentation stripper, the
The gas phase discharge end of two cyclone separators is connected to the second collection chamber, the solid phase discharge end of the second cyclone separator and the second close phase
Bed connection, semicoke cooler are connected to oil gas stripping section.
First inclined tube is set between sedimentation stripper and coke gasification furnace and for being connected to oil gas stripping section and first close
Phase bed.
Optionally, it in the application preferred embodiment, settles and is equipped with the second inclined tube between stripper and coke gasification furnace, the
One dense bed, which is equipped with, floods flow tube, and one end of the stretching sedimentation stripper of one end and fine coal carbonization reactor of the second inclined tube is connected to,
The other end of second inclined tube protrudes into the first dense bed and is connected to flow tube is flooded.
Optionally, in the application preferred embodiment, sedimentation stripper further includes third cyclone separator, third whirlwind point
Feed end from device is connected to the gas phase discharge end of the second cyclone separator, the gas phase discharge end of third cyclone separator and second
Collection chamber connection, the solid phase discharge end of third cyclone separator are connected to the second dense bed.
Optionally, in the application preferred embodiment, one end far from the first collection chamber of coke gasification furnace, which is equipped with, to be used for
It is passed through the first entrance of oxygen and water vapour and the gas distributor for being distributed the oxygen and water vapour that are entered by first entrance.
Optionally, in the application preferred embodiment, the oil gas stripping section for settling stripper is equipped with for being passed through water vapour
Second entrance and for be distributed by second entrance enter water vapour gas distribution grid.
Optionally, in the application preferred embodiment, fine coal destructive distillation device further includes semicoke blow-down drum, semicoke blow-down drum with
The connection of semicoke cooler is for collecting and being discharged semicoke.
Optionally, in the application preferred embodiment, sedimentation stripper and the preferred metal shell liner of coke gasification furnace
Insulating and wearing-resistant lining.
Optionally, in the application preferred embodiment, fine coal carbonization reactor uses cross section for circular metal tube, interior
Serve as a contrast insulating and wearing-resistant lining, length 10-30m, diameter 400-500mm.
Optionally, in the application preferred embodiment, fine coal carbonization reactor and sedimentation stripper are preferably coaxially disposed.
The present invention also proposes a kind of fine coal method for destructive distillation, using above-mentioned fine coal destructive distillation device, with the height in coke gasification furnace
Warm carbon granule is the bottom that heat carrier is delivered to fine coal carbonization reactor, mixes with the fine coal of fine coal feed inlet input, heats up and do
It evaporates, is then contacted with the heavy oil that heavy oil nozzle sprays into and generation fine coal destructive distillation and Heavy Oil Thermal are anti-in fine coal carbonization reactor
It answers；Product after reaction enters sedimentation stripper, and carries out gas solid separation by the second cyclone separator, and the oil gas of generation is by the
Two collection chamber dischargers enter fractionating system；The solid semicoke isolated is stripped through the water vapour of oil gas stripping section, a part
Semicoke enters the cooling of semicoke cooler, and another part semicoke enters the first dense bed of coke gasification furnace through the first inclined tube.
Coke gasification is carried out in coke gasification furnace and semicoke part is made to take off charcoal heating, and product is cooling by gas cooler
And gas solid separation is carried out by the first cyclone separator, isolated gas enters the first collection chamber and enters downstream through discharger
Processing unit (plant), isolated high temperature carbon granule heat carrier enter the first dense bed by the solid phase discharge end of the first cyclone separator, into
Enter the semicoke of coke gasification furnace formed after part takes off charcoal heating high temperature carbon granule be delivered to again fine coal carbonization reactor and fine coal into
The heavy oil that the fine coal and heavy oil nozzle of material mouth input spray into, which successively contacts, occurs thermal response, and circulation carries out.
Preferably, the partial size of fine coal and high temperature carbon granule, which is respectively less than, is equal to 5mm.
Optionally, in the application preferred embodiment, the oil gas in fine coal carbonization reactor be averaged linear speed be 3-5m/s, powder
The coal carbonization time is 5-10s, and the pyrolysis time of heavy oil is 3-6s.
Optionally, in the application preferred embodiment, the weight ratio of high temperature carbon granule and fine coal is in fine coal carbonization reactor
(1：0.5)-(1：0.7), the weight ratio of high temperature carbon granule and heavy oil is (1：0.25)-(1：0.4).
Optionally, in the application preferred embodiment, the temperature in coke gasification furnace is 1000-1200 DEG C, the first close phase
The corresponding linear gas velocity of bed is 1-5m/s, and the vaporization time of coke is 5-20min.
The fine coal destructive distillation device of present pre-ferred embodiments offer and the beneficial effect of fine coal method for destructive distillation include：
The fine coal method for destructive distillation that present pre-ferred embodiments provide, which reaches fine coal as fluidizing agent using high temperature carbon granule, to be done
The process goal with Heavy Oil Thermal is evaporated, and overcomes existing fluidisation heat under the conditions of retaining the process advantage of heavy oil fluidized pyrolysis
Solution technique is in the technical difficulty of fluidised heat-carrying, the manufacture for the carbon granule for carrying charcoal, coke burning regeneration control and application etc..
The fine coal destructive distillation device structure of offer is simple, invests low, flexible operation；Device smokeless, coke gasification are raw
It can further synthesizing methanol or even light-end products at gas；Device Raw material processing is high-efficient, is suitble to fine coal destructive distillation and Heavy Oil Thermal
Enlargement production.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is the structural schematic diagram of fine coal destructive distillation device in the embodiment of the present application；
Fig. 2 is the structural schematic diagram of coke gasification furnace in fine coal destructive distillation device in the embodiment of the present application；
Fig. 3 is the structural schematic diagram for settling stripper in the embodiment of the present application in fine coal destructive distillation device；
Fig. 4 is the enlarged drawing in Fig. 1 at IV.
Icon：10- coke gasification furnace；The first collection chamber of 11-；12- dilute phase section；13- floods flow tube；The first dense bed of 14-；
15- gas distributor；16- gas cooler；The first cyclone separator of 17-；The first inclined tube of 18-；181- first flow control valve；
The second inclined tube of 19-；191- second flow control valve；20- settles stripper；The second collection chamber of 21-；The second cyclone separator of 22-；
23- third cyclone separator；24- fine coal carbonization reactor；241- heavy oil nozzle；242- fine coal feed inlet；The close phase of 25- second
Bed；26- oil gas stripping section；27- semicoke cooler；271- semicoke delivery pipe；28- semicoke blow-down drum；29- gas distribution grid；31-
First entrance；32- second entrance；33- third entrance.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term " on ", "lower", "inner", "outside"
Set relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the orientation or position usually put
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term
" first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In addition, the terms such as term " vertical " are not offered as requiring component absolute upright, but can be slightly tilted.As " hung down
Directly " only refer to that its direction is more vertical with respect to for "horizontal", be not indicate the structure have to it is completely vertical, but can
To be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
It is specifically described with reference to embodiments.
Embodiment
Please refer to Fig. 1 to Fig. 4, fine coal destructive distillation device provided in an embodiment of the present invention includes that coke gasification furnace 10, gas are cold
But device 16, the first cyclone separator 17, fine coal carbonization reactor 24, sedimentation stripper 20, the second cyclone separator 22, semicoke are cold
But device 27 and the first inclined tube 18.
Please with reference to Fig. 1 and Fig. 2, coke gasification furnace 10 is close including the first collection chamber 11 and first for being located at both ends
Phase bed 14, the inlet end of gas cooler 16 are connected to one end close to the first collection chamber 11 of coke gasification furnace 10, and gas is cold
But the outlet side of device 16 is connected to the feed end of the first cyclone separator 17, the gas phase discharge end of the first cyclone separator 17 and
The connection of one collection chamber 11, the solid phase discharge end of the first cyclone separator 17 are connected to the first dense bed 14.
Please with reference to Fig. 1, Fig. 3 and Fig. 4, settling stripper 20 includes the second collection chamber 21 and oil for being located at both ends
Second dense bed 25 of gas stripping section 26 and close oil gas stripping section 26.
In the application, sedimentation stripper 20 and the preferred metal shell liner insulating and wearing-resistant lining of coke gasification furnace 10.
One end of fine coal carbonization reactor 24 is set between the second dense bed 25 and the second collection chamber 21, and the other end stretches out
Sedimentation stripper 20 is simultaneously connected to one end far from the first collection chamber 11 of coke gasification furnace 10；Fine coal carbonization reactor 24 is stretched
The one end for settling stripper 20 out is equipped with fine coal feed inlet 242 and heavy oil nozzle 241 (please with reference to Fig. 1 and Fig. 4).Fine coal
Feed inlet 242 is used for for inputting coal dust, heavy oil nozzle 241 into fine coal carbonization reactor 24 into fine coal carbonization reactor 24
Spray into heavy oil.
In the application, fine coal carbonization reactor 24 can be used cross section be circular metal tube, liner insulating and wearing-resistant lining,
Length can be for example 10-30m, and diameter can be 400-500mm.It is worth noting that fine coal carbonization reactor 24 and sedimentation
Stripper 20 is preferably coaxially disposed.
In the application, heavy oil nozzle 241 is set to the side close to the second collection chamber 21 of fine coal feed inlet 242, fine coal
Vertical range between feed inlet 242 and heavy oil nozzle 241 can be 5-7m.It can refer to ground, the quantity of heavy oil nozzle 241 can be with
It is 1, or it is multiple, such as 2,3,4 and 4 or more.When the quantity of heavy oil nozzle 241 is greater than 1, heavy oil nozzle
241 can be along the distribution of the radial symmetric of fine coal carbonization reactor 24 or equidistant interval distribution.
The feed end of second cyclone separator 22 and the one end of fine coal carbonization reactor 24 being located in sedimentation stripper 20
Connection, the gas phase discharge end of the second cyclone separator 22 are connected to the second collection chamber 21, and the solid phase of the second cyclone separator 22 goes out
Material end is connected to the second dense bed 25, and semicoke cooler 27 is connected to oil gas stripping section 26.
Preferably, sedimentation stripper 20 further includes third cyclone separator 23, third cyclone separator 23 in the application
Feed end is connected to the gas phase discharge end of the second cyclone separator 22, the gas phase discharge end of third cyclone separator 23 and the second collection
Gas chamber 21 is connected to, and the solid phase discharge end of third cyclone separator 23 is connected to the second dense bed 25.Namely it is to be understood that material
It is introduced into the separation of the second cyclone separator 22 through fine coal carbonization reactor 24, resulting gaseous substance enters third cyclone separator
23 continue to separate, and resulting gaseous substance enters the second collection chamber 21, the second cyclone separator 22 and third cyclonic separation immediately
The separated solid matter out of device 23 enters the second dense bed 25.
First inclined tube 18 is set between sedimentation stripper 20 and coke gasification furnace 10 and for being connected to oil gas stripping section 26
With the first dense bed 14.It is provided between the both ends of first inclined tube 18 being connect with oil gas stripping section 26 and the second dense bed 25
First flow control valve 181, to control the amount for the semicoke for entering the second dense bed 25 by oil gas stripping section 26.
Preferably, settling in the application and being additionally provided with the second inclined tube 19 between stripper 20 and coke gasification furnace 10, first is close
Phase bed 14, which is equipped with, floods flow tube 13, one end of the stretching sedimentation stripper 20 of one end and fine coal carbonization reactor 24 of the second inclined tube 19
Connection, the other end of the second inclined tube 19 protrude into the first dense bed 14 and are connected to flow tube 13 is flooded.
Second inclined tube 19 is provided with second with flooding between the both ends that flow tube 13 and fine coal carbonization reactor 24 are connect
Control valve 191, to control the amount for entering the high temperature carbon granule of fine coal carbonization reactor 24 by flooding flow tube 13.
Further, in the application, one end far from the first collection chamber 11 of coke gasification furnace 10 is equipped with for being passed through oxygen
Gas distributor 15 with the first entrance 31 of water vapour and for being distributed the oxygen and water vapour that are entered by first entrance 31.
Further, in the application, the oil gas stripping section 26 of sedimentation stripper 20 is equipped with second for being passed through water vapour
Entrance 32 and gas distribution grid 29 for being distributed the water vapour entered by second entrance 32.
Further, in the application, one end for being connected to the second inclined tube 19 of fine coal carbonization reactor 24 is additionally provided with
For being passed through the third entrance 33 for promoting steam, which is set to the separate heavy oil nozzle 241 of fine coal feed inlet 242
Side.
Further, fine coal destructive distillation device further includes semicoke blow-down drum 28 in the application, and semicoke blow-down drum 28 and semicoke are cold
But device 27 is connected to by semicoke delivery pipe 271 to be used to collect and be discharged semicoke.
In addition, can refer to following manner progress present invention also provides a kind of fine coal method for destructive distillation：It is mentioned using the application
The fine coal destructive distillation device of confession is delivered to the bottom of fine coal carbonization reactor 24 using the high temperature carbon granule in coke gasification furnace 10 as heat carrier
Portion, the fine coal inputted with fine coal feed inlet 242 mix, and heat up and destructive distillation, the heavy oil then sprayed into heavy oil nozzle 241 contact simultaneously
Fine coal destructive distillation occurs in fine coal carbonization reactor 24 to react with Heavy Oil Thermal.
Product after reaction enters sedimentation stripper 20, and carries out gas solid separation by the second cyclone separator 22, generates
Oil gas fractionating system is entered by 21 discharger of the second collection chamber；The solid semicoke isolated is steamed through the water of oil gas stripping section 26
Vapour stripping, a part of semicoke enter the cooling of semicoke cooler 27, and another part semicoke enters coke gasification furnace through the first inclined tube 18
10 the first dense bed 14.
Coke gasification furnace 10 carries out coke gasification by control oxygen and steam rates and semicoke part is made to take off charcoal heating, burnt
The product of charcoal gasification furnace 10 is (external) cooling by gas cooler 16 and carries out gas-solid point by the first cyclone separator 17
From isolated gas enters the first collection chamber 11 and enters downstream process units through discharger, and isolated high temperature carbon granule heat carries
Body enters the first dense bed 14 by the solid phase discharge end (material foot bottom) of the first cyclone separator 17, into coke gasification furnace 10
Semicoke form high temperature carbon granule after part takes off charcoal heating and be delivered to fine coal carbonization reactor 24 and fine coal feed inlet 242 again and input
Fine coal and heavy oil nozzle 241 spray into heavy oil successively contact generation thermal response.Above process circulation carries out.
It is original with fine coal and heavy oil using the high temperature carbon granule from coke gasification furnace 10 as fluidizing agent in the application
Material.In preferable embodiment, the partial size of fine coal and high temperature carbon granule, which is respectively less than, is equal to 5mm.
In the application, the oil gas in fine coal carbonization reactor 24 is averaged linear speed can be for 3-5m/s, when fine coal dry distillation reactor
Between be 5-10s, preferably 5-8s, more preferably 5-6s.
In the application, the time of Heavy Oil Thermal reaction can be 3-6s, preferably 3-5s, more preferably 3-4s.
In the application, the reaction temperature that fine coal carbonization reactor 24 exports can be 500-530 DEG C.The absolute pressure of reaction
For 0.1-0.4MPa.
In the application, the operation temperature in fine coal carbonization reactor 24 between coal dust feed inlet and heavy oil nozzle 241 can
It controls at 660-720 DEG C, such as 660 DEG C, 680 DEG C, 700 DEG C and 720 DEG C.
In the application, the weight ratio of high temperature carbon granule and fine coal can be (1 in fine coal carbonization reactor 24：0.5)-(1：
0.7), such as 1：0.5,1：0.6 and 1：0.7 etc., the weight ratio of high temperature carbon granule and heavy oil can be (1：0.25)-(1：0.4), such as
1：0.25,1：0.3,1：0.35 and 1：0.4 etc..In addition, can also according to the actual situation, with the heat Balance Calculation above feed points
The ratio of specific high temperature carbon granule and raw material.
In the application, the oxygen and water vapour that are passed through by third entrance 33 enter the bottom of coke gasification furnace 10, by right
The flow of oxygen and water vapour into gas distributor 15 is controlled, and char Gasification controls the temperature in coke gasification furnace 10
Between 1000-1200 DEG C.It can refer to ground, the dense phase gases linear speed of coke gasification furnace 10 can be 1-5m/s, dilute phase gas line
Speed can be able to be 5-20min with 0.4-0.7m/s, the vaporization time of coke.Gas after char Gasification is cold through gas cooler 16
But the temperature after can be 650-750 DEG C.
It is worth noting that above-mentioned dense phase gases are located in the first dense bed 14, dilute phase gas is located at the first dense bed 14
Separate gas distributor 15 side, namely positioned at the top of dense phase gases, define the area as dilute phase section 12.
In the application, for the stripping process of settler stripper using water vapour as stripping fluid, stripping temperature can be 480-
520℃.It can be 480-520 DEG C through the sedimentation steam stripped semicoke temperature of stripper 20, settle the semicoke being arranged outside stripper 20
Temperature≤80 DEG C of the semicoke after cooling of cooler 27.
Test example
Grand celebration normal pressure is processed by fine coal method for destructive distillation provided herein to fine coal destructive distillation device with provided herein
Residual oil and Yima coal powder raw material.The stripping fluid of settler stripper is water vapour, and stripping temperature is 500 DEG C.
Comparative example is set, and comparative example fine coal destructive distillation scheme carries out on the fixed bed destructive distillation device of laboratory；Comparative example delay
Pyrolysis scheme carries out on laboratory room small-sized delay pyrolysis installation, and fluidisation pyrolysis is enterprising in laboratory room small-sized circulating fluidized bed device
Row, fluidisation pyrolysis, conventional delay pyrolysis feed are Daqing Vacuum Residue.
Fine coal destructive distillation, fluidisation pyrolysis, conventional delay pyrolysis feed are shown in Tables 1 and 2, fine coal retorting operation condition and product point
The some properties of cloth and institute's product stream are shown in Table 3, fluidisation pyrolysis, conventional delay pyrolysis operations condition, product distribution and institute's product stream
Some properties be shown in Table 4.
Test example 1
This test example is not all with comparative example：It is tested, is come from using fine coal destructive distillation pilot-plant provided by the present application
The high temperature carbon granule temperature and raw material reaction temperature of coke gasification furnace and reaction time press application scheme progress.This test example powder
The operating condition of coal fluidized retoring and heavy oil fluidized pyrolysis installation, product distribution and portioned product property are shown in Table 5.
Test example 2
This test example and comparative example are not all：High temperature carbon granule temperature and raw material reaction temperature from coke gasification furnace and
Reaction time presses application scheme progress.The operating condition of the fluidized retoring of this test example fine coal and heavy oil fluidized pyrolysis installation,
Product distribution and portioned product property are shown in Table 6.
Test example 3
This test example is not all with comparative example：It is tested, is come from using fine coal destructive distillation pilot-plant provided by the present application
The high temperature carbon granule temperature and raw material reaction temperature of coke gasification furnace and reaction time press application scheme progress.This test example powder
The operating condition of coal fluidized retoring and heavy oil fluidized pyrolysis installation, product distribution and portioned product property are shown in Table 7.
1 feedstock property of table (comparative example)
| The charging of heavy oil riser reactor | Daqing Vacuum Residue |
| Density (20 DEG C), kgm-3 | 0.9279 |
| Carbon residue, w% | 9.06 |
| Race's composition, w% | - |
| Saturated hydrocarbons | 50 |
| Aromatic hydrocarbons | 32.9 |
| Colloid+asphalitine | 17.1 |
| Sulfur content, μ gg-1 | 1830 |
| Ni, μ gg-1 | 7.8 |
| V, μ gg-1 | 0.3 |
2 coal dust feedstock property (comparative example) of table
| Raw material | Yima coal powder raw material |
| Specific heat, cal/kg DEG C | 0.264 |
| Oil content, % (aluminium Zhen method) | 12.50 |
| Water content, % | 20.50 |
| Coal ash content, % | 13.40 |
| Particle diameter distribution, % | - |
| ≤0.5mm | 2.0 |
| 0.5-5mm | 11.0 |
| 5-10mm | 16.5 |
| 10-20mm | 26.3 |
| 20-30mm | 44.2 |
Operating condition, product distribution and the portioned product property of 3 coal dust fixed bed destructive distillation device of table
(comparative example)
Operating condition, product distribution and the portioned product property (comparative example) of 4 conventional pyrolysis device of table
Operating condition, product distribution and the portioned product property of a kind of fine coal destructive distillation device of table 5
(test example 1)
Operating condition, product distribution and the portioned product property of a kind of fine coal destructive distillation device of table 6
(test example 2)
Operating condition, product distribution and the portioned product property of a kind of fine coal destructive distillation device of table 7
(test example 3)
Comparative experimental example 1-3 and comparative example, it can be seen that use fine coal destructive distillation device provided by the present application and fine coal
Method for destructive distillation carries out fine coal destructive distillation, and effect is preferable, is suitable for fine coal destructive distillation and the large-scale production of heavy oil fluidized pyrolysis.
In conclusion fine coal method for destructive distillation provided by the present application reaches fine coal destructive distillation as fluidizing agent using high temperature carbon granule
With the process goal of Heavy Oil Thermal, and existing fluidisation is overcome under the conditions of retaining the process advantage of heavy oil fluidized pyrolysis and is pyrolyzed
Technique is in the technical difficulty of fluidised heat-carrying, the manufacture for the carbon granule for carrying charcoal, coke burning regeneration control and application etc..It provides
Fine coal destructive distillation device structure it is simple, invest low, flexible operation；Device smokeless, coke gasification generates gas can be into one
Walk synthesizing methanol or even light-end products；Device Raw material processing is high-efficient, is suitble to fine coal destructive distillation and Heavy Oil Thermal enlargement production.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of fine coal destructive distillation device, which is characterized in that it include coke gasification furnace, gas cooler, the first cyclone separator,
Fine coal carbonization reactor, sedimentation stripper, the second cyclone separator, semicoke cooler and the first inclined tube；
The coke gasification furnace includes the first collection chamber and the first dense bed positioned at both ends, the inlet end of the gas cooler
Be connected to the coke gasification furnace close to one end of first collection chamber, the outlet side of the gas cooler and described the
The feed end of one cyclone separator is connected to, and the gas phase discharge end of first cyclone separator is connected to first collection chamber,
The solid phase discharge end of first cyclone separator is connected to first dense bed；
The sedimentation stripper includes positioned at second collection chamber and oil gas stripping section at both ends and close to the oil gas stripping section
The second dense bed；
One end of the fine coal carbonization reactor is set between second dense bed and second collection chamber, and the other end is stretched
It is described out to settle stripper and be connected to one end far from first collection chamber of the coke gasification furnace；The fine coal destructive distillation
One end of the stretching of the reactor sedimentation stripper is equipped with fine coal feed inlet and heavy oil nozzle；
One be located in the sedimentation stripper of the feed end of second cyclone separator and the fine coal carbonization reactor
End connection, the gas phase discharge end of second cyclone separator are connected to second collection chamber, second cyclone separator
Solid phase discharge end be connected to second dense bed, the semicoke cooler is connected to the oil gas stripping section；
First inclined tube is set between the sedimentation stripper and the coke gasification furnace and for being connected to the oil gas vapour
Propose section and first dense bed.
2. fine coal destructive distillation device according to claim 1, which is characterized in that the sedimentation stripper and the coke gasification
The second inclined tube is equipped between furnace, first dense bed, which is equipped with, floods flow tube, one end of second inclined tube and the fine coal destructive distillation
One end connection of the stretching of the reactor sedimentation stripper, the other end of second inclined tube protrude into first dense bed simultaneously
It is connected to the flow tube of flooding.
3. fine coal destructive distillation device according to claim 1, which is characterized in that the sedimentation stripper further includes third whirlwind
Separator, the feed end of the third cyclone separator are connected to the gas phase discharge end of second cyclone separator, and described
The gas phase discharge end of three cyclone separators is connected to second collection chamber, the solid phase discharge end of the third cyclone separator with
The second dense bed connection.
4. fine coal destructive distillation device according to claim 1, which is characterized in that separate described the first of the coke gasification furnace
One end of collection chamber is equipped with the first entrance for being passed through oxygen and water vapour and is entered for being distributed by the first entrance
The gas distributor of oxygen and water vapour.
5. fine coal destructive distillation device according to claim 1, which is characterized in that the oil gas stripping of the sedimentation stripper
Section is equipped with the gas point for being passed through the second entrance of water vapour and for being distributed the water vapour entered by the second entrance
Fabric swatch.
6. fine coal destructive distillation device according to claim 1, which is characterized in that the fine coal destructive distillation device further includes semicoke row
Batch can, the semicoke blow-down drum are connected to for collecting and being discharged semicoke with the semicoke cooler.
7. a kind of fine coal method for destructive distillation, which is characterized in that fine coal destructive distillation device as claimed in any one of claims 1 to 6 is used,
The bottom of the fine coal carbonization reactor is delivered to using the high temperature carbon granule in the coke gasification furnace as heat carrier, with the fine coal
The fine coal mixing of feed inlet input, heats up and destructive distillation, the heavy oil then sprayed into the heavy oil nozzle contact and in the fine coal
Fine coal destructive distillation occurs in carbonization reactor to react with Heavy Oil Thermal；Product after reaction enters the sedimentation stripper, and by
Second cyclone separator carries out gas solid separation, and the oil gas of generation enters fractionation train by the second collection chamber discharger
System；The solid semicoke isolated is stripped through the water vapour of the oil gas stripping section, and a part of semicoke enters the semicoke cooler
Cooling, another part semicoke enters first dense bed of the coke gasification furnace through first inclined tube；
Coke gasification is carried out in the coke gasification furnace and semicoke part is made to take off charcoal heating, and product passes through the gas cooler
It cools down and passes through first cyclone separator and carry out gas solid separation, isolated gas enters first collection chamber and through being discharged
Device enters downstream process units, and isolated high temperature carbon granule heat carrier is discharged by the solid phase of first cyclone separator
End enters first dense bed, and the semicoke into the coke gasification furnace forms high temperature carbon granule after part takes off charcoal heating
The weight that the fine coal and the heavy oil nozzle for being delivered to the fine coal carbonization reactor and fine coal feed inlet input again spray into
Successively thermal response occurs oil for contact, and circulation carries out；
Preferably, the partial size of the fine coal and the high temperature carbon granule, which is respectively less than, is equal to 5mm.
8. fine coal method for destructive distillation according to claim 7, which is characterized in that the oil gas in the fine coal carbonization reactor is flat
Equal linear speed is 3-5m/s, and the retorting time of the fine coal is 5-10s, and the pyrolysis time of the heavy oil is 3-6s.
9. fine coal method for destructive distillation according to claim 7, which is characterized in that the high temperature in the fine coal carbonization reactor
The weight ratio of carbon granule and the fine coal is (1：0.5)-(1：0.7), the weight ratio of the high temperature carbon granule and the heavy oil is (1：
0.25)-(1：0.4).
10. fine coal method for destructive distillation according to claim 7, which is characterized in that the temperature in the coke gasification furnace is
1000-1200 DEG C, the corresponding linear gas velocity of first dense bed is 1-5m/s, and the vaporization time of coke is 5-20min.
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| CN110903848A (en) * | 2019-12-17 | 2020-03-24 | 陕西延长石油（集团）有限责任公司 | Device and method for co-converting heavy inferior oil and coal |
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| CN102031154A (en) * | 2009-09-29 | 2011-04-27 | 惠生工程（中国）有限公司 | Method for comprehensively utilizing lignite |
| CN206033677U (en) * | 2016-08-23 | 2017-03-22 | 中石化炼化工程（集团）股份有限公司 | Powder coal carbonization device |
| CN206428192U (en) * | 2016-09-28 | 2017-08-22 | 山西新唐工程设计股份有限公司 | Fine coal fast pyrogenation and char Gasification combined unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031154A (en) * | 2009-09-29 | 2011-04-27 | 惠生工程（中国）有限公司 | Method for comprehensively utilizing lignite |
| CN206033677U (en) * | 2016-08-23 | 2017-03-22 | 中石化炼化工程（集团）股份有限公司 | Powder coal carbonization device |
| CN206428192U (en) * | 2016-09-28 | 2017-08-22 | 山西新唐工程设计股份有限公司 | Fine coal fast pyrogenation and char Gasification combined unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110903848A (en) * | 2019-12-17 | 2020-03-24 | 陕西延长石油（集团）有限责任公司 | Device and method for co-converting heavy inferior oil and coal |
| CN110903848B (en) * | 2019-12-17 | 2021-06-04 | 陕西延长石油（集团）有限责任公司 | Device and method for co-converting heavy inferior oil and coal |
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