CN106085480A - A kind of pyrolysis installation and gas-based shaft kiln combined system and the method for process coal - Google Patents
A kind of pyrolysis installation and gas-based shaft kiln combined system and the method for process coal Download PDFInfo
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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
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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
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
- C10B47/20—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge according to the moving bed type
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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
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/026—Dust removal by centrifugal forces
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/028—Dust removal by electrostatic precipitation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K3/00—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
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Abstract
The present invention discloses a kind of pyrolysis installation and gas-based shaft kiln combined system and the method for process coal.This system includes pyrolysis installation, isolation of purified system, reformation transformation system and gas-based shaft kiln；Pyrolysis installation includes device body, granular bed, pyrolysis oil gas vent, catalyst inlet and catalyst outlet；Granular bed includes shell and inner shell, and inner shell is positioned at enclosure, shell and inner shell and is fixed on the sidewall of device body bottom, thus limits the inner space of granular bed；Raw material is pyrolyzed by the method, and the separated cleaning system of pyrolysis oil gas of generation and reformation transformation system obtain reducing gases after processing, and reducing gases is sent into gas-based shaft kiln and is used for smelting iron and steel.The system and method for the present invention, is effectively utilized the fine coal being generally difficult to utilize, and the pyrolysis gas dust content that pyrolysis installation produces is low, reduces subsequent treatment cost and energy consumption, and the reducing gases that system produces can be directly used for the production of gas-based shaft kiln.
Description
Technical field
The invention belongs to coal sublevel cascade utilization technical field, particularly relate to for low order powder in jet coal, brown coal etc.
A kind of pyrolysis installation of coal and gas-based shaft kiln combined system and the method for process coal.
Background technology
The construction features of coal itself, determines that low-order coal volatile matter is high, activity is strong, due to moisture with oxygen content is high and calorific value
Low, directly utilize (burn or gasify) efficiency low, economic worth can not show a candle to high-order coal, therefore, the low order large-scale developed and utilized
Coal first must be processed upgrading to it could be used for production of living.One of science and conventional processing method the most is pyrolysis,
Also referred to as " dry distilling " or " thermal decomposition ".Pyrolysis refer to coal isolation air or under inert gas conditions continuous heating to higher temperature
Time, the series of physical change occurred and chemical reaction, coal can crosslink bond fission, product restructuring and two in the process
Secondary response, finally gives the products such as gas (coal gas), liquid (tar) and solid (semicoke).Containing there is no method at present in tar
The multiple polycyclic aromatic hydrocarbon compound of synthetic and heterocyclic compound.Compared with directly burning, pyrolysis achieves in coal not
Congruent step converts, and is a kind of resource high-efficiency method of comprehensive utilization, can reduce the environmental pollution that fire coal causes, improves low order
The advantage of coal resource comprehensive utilization value, creates significant economic and social benefits.
China is that iron and steel produces the first big country, and current steel scrap supply can not meet far away the needs that iron and steel produces.Domestic
Steel scrap breach can not get enough supplementing, and has been further exacerbated by the nervous situation of market supply.In this case, development is straight in good time
It is necessary for connecing reduction technique.Direct-reduction technique is without coke and sintering deposit, thus is suitable for the strictest ring
Guaranteed request.At present, the whole world has ten several direct-reduction processes to achieve industrialized production, returns including Midrex, HyL-III, coal base
Rotary kiln, rotary hearth furnace, fluidized bed process etc..Only gas-based shaft kiln technique Midrex and HyL-III can maximize production, product quality
High, invest low, energy consumption is minimum in existing direct-reduction production method.But the degree of purification requirement that gas-based shaft kiln is to reducing gases
High.
But, the pyrolysis oil gas that pyrolysis of coal produces, complicated component, heavy tar components are many, and dust content is big, dust shape
Irregularly, the follow-up dust pelletizing system that complexity is set is needed to process pyrolysis oil gas just available coal gas and high-quality tar.
Summary of the invention
In order to solve the problems referred to above, the present invention proposes a kind of pyrolysis installation and gas-based shaft kiln combined system and the side of process coal
Method, will obtain pyrolysis oil gas, is pyrolyzed oil gas and continues under catalyst action after reluctant for other equipment fine coal high temperature pyrolysis
Being cracked into high-quality pyrolysis oil gas, high-quality pyrolysis oil gas impurity content is few, and the pyrolysis gas after purifying is sent directly into gas base and erects
Furnace system, reduces smelting iron and steel cost.
An object of the present invention is to provide a kind of pyrolysis installation and gas-based shaft kiln combined system, including pyrolysis installation, divides
From cleaning system, reformation transformation system and gas-based shaft kiln；
Described pyrolysis installation includes that device body, granular bed, pyrolysis oil gas vent, catalyst inlet and catalyst go out
Mouthful；
Described granular bed includes that shell and inner shell, described inner shell are positioned at described enclosure, described shell and inner shell
It is fixed on the sidewall of described device body bottom, thus limits the inner space of described granular bed；The side panel of shell
It is loose structure with the side panel of inner shell；Described catalyst inlet is positioned at the device body that described shell is corresponding with catalyst outlet
Sidewall on, described pyrolysis oil gas vent is positioned on the sidewall of device body corresponding to described inner shell, described catalyst inlet position
Above described catalyst outlet；
Described pyrolysis installation pyrolysis oil gas vent connects isolation of purified system pyrolysis oil gas entrance, described isolation of purified system
Gas outlet connects reformation transformation system gas access, and described reformation transformation system gas outlet connects gas-based shaft kiln gas and enters
Mouthful.
Granular bed is set at pyrolysis oil gas outlet, can effectively reduce the dustiness in pyrolysis oil gas.Granule moves
The bed of bed uses the calcium oxide with pyrolysis catalytic effect, calcium oxide is crushed to below 1mm, is entered by catalyst inlet
Granular bed, preferred catalyst rate travel in granular bed is 0.1～2m/s.Pyrolysis oil gas vent is arranged
In pyrolysis installation bottom so that high-temperature semi-coke has continuation lytic effect to the heavy tar components in high temperature pyrolysis oil gas so that
Pyrolysis gas productivity increases.
Further, the system of the present invention also includes that tar refining system, described tar refining system include that pyrolysis oil enters
Mouth and tar outlet, described isolation of purified system includes liquid outlet；The outlet of described isolation of purified system liquid connects described Jiao
Oil refining system pyrolysis oil-in.
As preferred embodiments of the present invention, the aperture of described shell side panel is 0～0.05mm, and the density in hole is area hole
Number is no less than 500～5000/cm2。
As preferred embodiments of the present invention, the aperture of described inner shell side panel is 0～0.1mm, and the density in hole is area hole
Number is no less than 50～5000/cm2。
Concrete, described pyrolysis installation farther includes fuel gas inlet, and described pyrolysis installation fuel gas inlet connects described point
From cleaning system gas outlet.The partial thermal decomposition gas that isolation of purified system produces can enter pyrolysis installation as fuel, for pyrolysis
Reaction provides energy.
In the present invention, described isolation of purified system includes: cyclone separator, first cold tower, aerator, electrical tar precipitator, de-
Sulfur tower, deammoniation tower, wash benzene column and gas holder；Described cyclone separator gas access connects pyrolysis installation pyrolysis oil gas vent, described
Cyclone separator gas outlet connects just Leng Ta gas access, and described Chu Leng tower gas outlet connects blower gas entrance, institute
Stating blower gas outlet and connect electrical tar precipitator gas access, described electrical tar precipitator gas outlet connects desulfurizing tower gas and enters
Mouthful, described desulfurizing tower gas outlet connects deammoniation tower gas access, and described deammoniation tower gas outlet connects washes benzene column gas access,
Described benzene column gas outlet of washing connects gas holder gas access.
In the present invention, described reformation transformation system includes: fine desulfurizing tower, reformation tower, conversion tower and decarbonization device；Described
Fine desulfurizing tower gas access connects the outlet of isolation of purified system gas, and described fine desulfurizing tower gas outlet connects reformation tower gas
Body entrance, described reformation tower gas outlet connects conversion tower gas access, and described conversion tower gas outlet connects decarbonization device gas
Body entrance, described decarbonization device gas outlet connects described gas-based shaft kiln gas access.
It is a further object of the present invention to provide a kind of method utilizing said system to process coal, comprise the steps:
Being added in described pyrolysis installation by raw material after broken, make raw material generation pyrolytic reaction, pyrolytic reaction produces pyrolysis
Oil gas and pyrolysis char；
Described pyrolysis oil pneumatic transmission is entered described granular bed, and catalyst enters described granule through described catalyst inlet and moves
Movable bed, carries out dedusting, cooling to described pyrolysis oil gas, and described pyrolysis oil gas continues cracking, pyrolysis under described catalyst action
Macromolecular components in oil gas resolves into micro-molecular gas, it is thus achieved that high-quality pyrolysis oil gas, catalyst is discharged by catalyst outlet；
Described high-quality pyrolysis oil gas is sent into described isolation of purified system through pyrolysis oil gas vent, it is thus achieved that pyrolysis gas and heat
Solve oil, then described pyrolysis gas is sent into described reformation transformation system and process, it is thus achieved that reducing gases；
Described reducing gases is sent into described gas-based shaft kiln.
As preferred embodiments of the present invention, the pyrolysis oil described isolation of purified system produced sends into described tar refining system
System, it is thus achieved that high-quality tar.
As preferred embodiments of the present invention, the partial thermal decomposition gas that described isolation of purified system produces is sent into institute as fuel
State pyrolysis installation.
The pyrolysis installation of the present invention and gas-based shaft kiln combined system and the method for process coal, be built in heat by granular bed
In solution device, effectively reduce the dustiness in pyrolysis oil gas, reduce follow-up tar pretreated cost；Pass through granular bed
Reducing pyrolysis oil temperature, make part tar condensing, heavy tar yield declines；Pyrolysis catalysts is used to move as granule
The bed of bed, improves pyrolysis gas available gas constituent content further；Pyrolysis gas is after reformation conversion process, and gained reducing gases is straight
Tapping into into gas-based shaft kiln, low cost, energy consumption of unit product is low.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention pyrolysis installation and gas-based shaft kiln combined system schematic diagram；
Fig. 2 is the schematic front view of granular bed in embodiment of the present invention system；
Fig. 3 is the flow chart of the method for the system process coal utilizing the embodiment of the present invention.
In figure:
100-pyrolysis installation；
1-device body；11-is pyrolyzed oil gas vent；12-catalyst inlet；13-catalyst outlet；2-granular bed；
21-shell；22-inner shell；3-heat accumulation type radiant tube；
200-isolation of purified system；
201-cyclone separator；202-just cold tower；203-aerator；204-electrical tar precipitator；
205-desulfurizing tower；206-deammoniation tower；207-washes benzene column；208-gas holder；
300-resets transformation system；
The fine desulfurizing tower of 301-；302-reformation tower；303-converts tower；304-decarbonization device；
400-gas-based shaft kiln；
500-tar refining system.
Detailed description of the invention
Below in conjunction with drawings and Examples, the detailed description of the invention of the present invention is described in more details, in order to energy
The advantage being enough more fully understood that the solution of the present invention and various aspects thereof.But, specific embodiments described below and enforcement
Example is only descriptive purpose rather than limitation of the present invention.
As shown in Figure 1, on the one hand, the embodiment of the present invention provides a kind of pyrolysis installation and gas-based shaft kiln combined system, including
Pyrolysis installation 100, isolation of purified system 200, reformation transformation system 300, gas-based shaft kiln 400 and tar refining system 500.
Pyrolysis installation 100 includes device body 1, granular bed 2 and heat accumulation type radiant tube 3.
Device body 1 is pyrolytic reaction container.Typically offer feed(raw material)inlet at the top of reaction vessel, sidewall is arranged
There is pyrolysis oil gas vent, semicoke outlet is set in the bottom of reaction vessel.
As in figure 2 it is shown, granular bed 2 includes shell 21 and inner shell 22.It is internal that inner shell 22 is positioned at shell 21, shell 21 He
Inner shell 22 is fixed on the sidewall of device body 1 bottom, thus limits the inner space of granular bed.
On the sidewall of the device body that catalyst inlet 12 and catalyst outlet 13 are positioned at shell 21 correspondence, pyrolysis oil gas goes out
On the sidewall of the device bodies that mouth 11 is positioned at inner shell 22 correspondence, catalyst inlet 12 is positioned at above pyrolysis oil gas vent 11, pyrolysis
Oil gas vent 11 is positioned at above catalyst outlet 13.
Granular bed 2 is set at pyrolysis oil gas vent 11, can effectively reduce the dustiness in pyrolysis oil gas.Granule moves
The bed of movable bed 2 uses the calcium oxide with pyrolysis catalytic effect, calcium oxide is crushed to below 1mm, passes through catalyst inlet
12 enter granular bed, and calcium oxide, in granular bed, moves to catalyst outlet 13 from top to bottom.Shifting at calcium oxide
During Dong, to pyrolysis oil gas be catalyzed, dedusting, cooling.Preferably catalyst rate travel in granular bed is
0.1～2m/s.Pyrolysis oil gas vent 11 is arranged on pyrolysis installation 100 bottom so that high-temperature semi-coke is in high temperature pyrolysis oil gas
Heavy tar components have continuation lytic effect so that pyrolysis gas productivity increase.
The side panel of shell 21 and the side panel of inner shell 22 are loose structure.In the embodiment of the present invention, shell 21 side panel
Aperture be 0～0.05mm, the density in hole is area hole count no less than 500～5000/cm2.The aperture of inner shell 22 side panel
Being 0～0.1mm, the density in hole is that area hole count is no less than 50～5000/cm2.The pyrolysis oil gas that device body 1 produces is through outward
The side panel of shell 21 enters the cavity of granular bed, continues cracking, and realize being pyrolyzed removing of oil gas under the effect of catalyst
Dirt is lowered the temperature, it is thus achieved that high-quality pyrolysis oil gas, and high-quality oil gas is discharged granular bed through the side panel of inner shell 22, passed through pyrolysis oil
Gas outlet 11 discharge pyrolysis installation 100, carries out subsequent treatment.
Heat accumulation type radiant tube 3 is arranged in device body 1, and heat accumulation type radiant tube 3 is along the short transverse multilamellar of device body 1
Arrange, arrange many heat accumulation type radiant tubes 3 the most parallel to each other, beneficially raw material (fine coal) uniform in stove for every layer
It is heated.Employing heat accumulation type radiant tube heats, and belongs to heating indirectly, and gained pyrolysis oil gas quality is high, and available gas constituent content is high.
In the embodiment of the present invention, isolation of purified system 200 includes: cyclone separator 201, first cold tower 202, aerator 203,
Electrical tar precipitator 204, desulfurizing tower 205, deammoniation tower 206, wash benzene column 207 and gas holder 208.Cyclone separator 201 gas access is even
Connecing pyrolysis oil gas vent 11, cyclone separator 201 gas outlet connects just cold tower 202 gas access, Chu Lengta 202 gas outlet
Connecting aerator 203 gas access, aerator 203 gas outlet connects electrical tar precipitator 204 gas access, electrical tar precipitator
204 gas outlets connect desulfurizing tower 205 gas access, and desulfurizing tower 205 gas outlet connects deammoniation tower 206 gas access, deamination
Tower 206 gas outlet connects washes benzene column 207 gas access, washes benzene column 207 gas outlet and connects gas holder 208 gas access.Pyrolysis
The high-quality pyrolysis oil gas that device 100 produces enters isolation of purified system 200, and through Oil-gas Separation, the gas of generation is through desulfurization, de-
The operations such as ammonia obtain pyrolysis gas.
Further, pyrolysis installation 100 farther includes fuel gas inlet, and pyrolysis installation fuel gas inlet connects isolation of purified system
Unite 200 gas outlets.The partial thermal decomposition gas that isolation of purified system 200 produces can enter pyrolysis installation 100 as fuel, for pyrolysis
Reaction provides energy.
In the embodiment of the present invention, reformation transformation system 300 includes: fine desulfurizing tower 301, reformation tower 302, conversion tower 303
With decarbonization device 304.Fine desulfurizing tower 301 gas access connects isolation of purified system 200 gas outlet, fine desulfurizing tower 301
Gas outlet connects reformation tower 302 gas access, and reformation tower 302 gas outlet connects conversion tower 303 gas access, converts tower
303 gas outlets connect decarbonization device 304 gas access, and decarbonization device 304 gas outlet connects gas-based shaft kiln 400 gas and enters
Mouthful.The pyrolysis gas that isolation of purified system 200 produces enters reformation transformation system 300, by further fine desulfurization, reformation and
Conversion, is converted into hydrogen and carbon monoxide by the gas in pyrolysis gas, obtains the reducing gases of proper ratio, the direct air inlet of reducing gases
Base shaft furnace 400.
Gas-based shaft kiln 400 is the reactor being directly produced reduced iron, and the reducing gases that reformation transformation system 300 produces is transported to
Gas-based shaft kiln 400, for reduction reaction.
Further, the tar refining system 500 of the embodiment of the present invention includes pyrolysis oil entrance and tar outlet, separates clean
Change system 200 includes liquid outlet；Isolation of purified system 200 liquid outlet connects tar refining system 500 pyrolysis oil entrance.Point
Tar refining system 500, hydrogenated essence is entered from the isolated pyrolysis oil of cleaning system 200 separated cleaning system liquid outlet
System can obtain high-quality oil product.
As it is shown on figure 3, on the other hand, the embodiment of the present invention provides a kind of method utilizing said system to process coal, including
Following steps:
1, the raw material (fine coal) after crushing adds in pyrolysis installation, makes raw material generation pyrolytic reaction, and pyrolytic reaction produces
Pyrolysis oil gas and pyrolysis char；
2, pyrolysis oil pneumatic transmission being entered granular bed, catalyst enters granular bed through catalyst inlet, to pyrolysis oil
Gas carries out dedusting, cooling, and pyrolysis oil gas continues cracking under catalyst action, and the macromolecular components in pyrolysis oil gas resolves into little
Molecular gas, it is thus achieved that high-quality pyrolysis oil gas, catalyst is discharged by catalyst outlet；
3, high-quality is pyrolyzed oil gas and sends into isolation of purified system through pyrolysis oil gas vent, it is thus achieved that pyrolysis gas and pyrolysis oil,
Then pyrolysis gas is sent into reformation transformation system process, it is thus achieved that reducing gases；Reducing gases is sent into gas-based shaft kiln.
4, the pyrolysis oil that isolation of purified system produces is sent into tar refining system, it is thus achieved that high-quality tar.
5, the partial thermal decomposition gas that isolation of purified system produces is sent into pyrolysis installation as fuel.
Embodiment
Feed coal is crushed to below particle diameter 3mm, sends into pyrolysis installation and gas-based shaft kiln combined system, control pyrolysis installation
Interior temperature 900 DEG C, is provided with Multi-layer warming radial canal and granular bed dust pelletizing system in pyrolysis installation.Pyrolysis oil gas is at granule
In moving bed, continue cracking through catalyst action, it is thus achieved that high-quality pyrolysis oil gas.The high-quality pyrolysis oil gas that pyrolysis installation produces
After separated cleaning system and tar refining system, pyrolysis gas and high-quality oil product can be obtained.Pyrolysis gas is at reformation transformation system
Obtaining reducing gases after reason, reducing gases is directly entered gas-based shaft kiln and produces.Pyrolysis gas after separated cleaning system forms
As shown in table 1.
Table 1 pyrolysis gas constituent
Reducing gases H after reformation conversion decarburization2It is 91.1% with the total amount of CO, H2/ CO volume ratio is 4.4:1, with blast furnace
Smelting system is compared with coke-stove gas-gas-based shaft kiln smelting system, and pyrolysis installation-gas-based shaft kiln has obvious advantage, has
Bigger economic worth.Compare with coke-stove gas-gas-based shaft kiln smelting system, the energy of pyrolysis installation-gas-based shaft kiln unit product
Consumption reduction by 6.2%, unit cost averagely reduces by 50～80 yuan/ton.
It should be noted that each embodiment above by reference to described by accompanying drawing is only in order to illustrate rather than restriction originally
The scope of invention, it will be understood by those within the art that, the most right
Amendment that the present invention is carried out or equivalent, all should contain within the scope of the present invention.Additionally, indication unless the context
Outward, the word occurred in the singular includes plural form, and vice versa.It addition, unless stated otherwise, then any embodiment
All or part of can use in conjunction with all or part of of any other embodiments.
Claims (10)
1. a pyrolysis installation and gas-based shaft kiln combined system, it is characterised in that include pyrolysis installation, isolation of purified system, weight
Whole transformation system and gas-based shaft kiln,
Described pyrolysis installation includes device body, granular bed, pyrolysis oil gas vent, catalyst inlet and catalyst outlet；
Described granular bed includes that shell and inner shell, described inner shell are positioned at described enclosure, and described shell and inner shell are fixed
On the sidewall of described device body bottom, thus limit the inner space of described granular bed；The side panel of shell and interior
The side panel of shell is loose structure；Described catalyst inlet is positioned at the side of device body corresponding to described shell with catalyst outlet
On wall, described pyrolysis oil gas vent is positioned on the sidewall of device body corresponding to described inner shell, and described catalyst inlet is positioned at institute
State above catalyst outlet；
Described pyrolysis installation pyrolysis oil gas vent connects isolation of purified system pyrolysis oil gas entrance, described isolation of purified system gas
Outlet connects reformation transformation system gas access, described reformation transformation system gas outlet's connection gas-based shaft kiln gas access.
Pyrolysis installation the most according to claim 1 and gas-based shaft kiln combined system, it is characterised in that farther include tar
Refining system, described tar refining system includes that pyrolysis oil entrance and tar outlet, described isolation of purified system include liquid discharge
Mouthful；
The outlet of described isolation of purified system liquid connects described tar refining system pyrolysis oil-in.
Pyrolysis installation the most according to claim 1 and gas-based shaft kiln combined system, it is characterised in that described shell side panel
Aperture be 0～0.05mm, the density in hole is area hole count no less than 500～5000/cm2。
Pyrolysis installation the most according to claim 1 and gas-based shaft kiln combined system, it is characterised in that described inner shell side panel
Aperture be 0～0.1mm, the density in hole is area hole count no less than 50～5000/cm2。
Pyrolysis installation the most according to claim 1 and gas-based shaft kiln combined system, it is characterised in that described pyrolysis installation enters
One step includes fuel gas inlet, and described pyrolysis installation fuel gas inlet connects the outlet of described isolation of purified system gas.
Pyrolysis installation the most according to claim 1 and gas-based shaft kiln combined system, it is characterised in that described isolation of purified system
System includes: cyclone separator, first cold tower, aerator, electrical tar precipitator, desulfurizing tower, deammoniation tower, wash benzene column and gas holder；
Wherein, described cyclone separator gas access connects pyrolysis installation pyrolysis oil gas vent, and described cyclone separator gas goes out
Mouthful connecting just Leng Ta gas access, described Chu Leng tower gas outlet connects blower gas entrance, and described blower gas exports
Connecting electrical tar precipitator gas access, described electrical tar precipitator gas outlet connects desulfurizing tower gas access, described desulfurizing tower gas
Body outlet connect deammoniation tower gas access, described deammoniation tower gas outlet connect washes benzene column gas access, described in wash benzene column gas
Outlet connects gas holder gas access.
Pyrolysis installation the most according to claim 1 and gas-based shaft kiln combined system, it is characterised in that described reformation transformation series
System includes: fine desulfurizing tower, reformation tower, conversion tower and decarbonization device；
Wherein, described fine desulfurizing tower gas access connects the outlet of isolation of purified system gas, and described fine desulfurizing tower gas goes out
Mouthful connecting reformation tower gas access, described reformation tower gas outlet connects conversion tower gas access, described conversion tower gas outlet
Connecting decarbonization device gas access, described decarbonization device gas outlet connects described gas-based shaft kiln gas access.
8. one kind utilizes the method that the arbitrary described system of claim 1～7 processes coal, it is characterised in that comprise the steps:
Being added in described pyrolysis installation by raw material after broken, make raw material generation pyrolytic reaction, pyrolytic reaction produces pyrolysis oil gas
And pyrolysis char；
Described pyrolysis oil pneumatic transmission is entered described granular bed, and catalyst enters described granule through described catalyst inlet and moves
Bed, carries out dedusting, cooling to described pyrolysis oil gas, and described pyrolysis oil gas continues cracking, pyrolysis oil under described catalyst action
Macromolecular components in gas resolves into micro-molecular gas, it is thus achieved that high-quality pyrolysis oil gas, catalyst is discharged by catalyst outlet；
Described high-quality pyrolysis oil gas is sent into described isolation of purified system through pyrolysis oil gas vent, it is thus achieved that pyrolysis gas and pyrolysis
Oil, then sends described pyrolysis gas into described reformation transformation system and processes, it is thus achieved that reducing gases；
Described reducing gases is sent into described gas-based shaft kiln.
The method processing coal the most according to claim 8, it is characterised in that the pyrolysis oil that described isolation of purified system is produced
Send into described tar refining system, it is thus achieved that high-quality tar.
The method processing coal the most according to claim 8, it is characterised in that the part that described isolation of purified system is produced
Pyrolysis gas sends into described pyrolysis installation as fuel.
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