CN206887039U - The system that a kind of fine coal high-efficiency cleaning prepares oil gas product - Google Patents
The system that a kind of fine coal high-efficiency cleaning prepares oil gas product Download PDFInfo
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- CN206887039U CN206887039U CN201720489292.9U CN201720489292U CN206887039U CN 206887039 U CN206887039 U CN 206887039U CN 201720489292 U CN201720489292 U CN 201720489292U CN 206887039 U CN206887039 U CN 206887039U
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Abstract
The system that a kind of fine coal high-efficiency cleaning prepares oil gas product, including fine coal pretreatment unit, pyrolysis unit, gasification unit and fuel element are the utility model is related to, wherein fine coal pretreatment unit includes drying equipment or drying equipment+size classification apparatus；As fine coal pretreatment unit only includes drying equipment, corresponding fuel element uses fluidized bed combustion equipment；As fine coal pretreatment unit includes drying equipment and size classification apparatus, then corresponding fuel element includes fluidized bed combustion equipment+air-flow bed burning equipment；Pyrolysis unit is fluidized bed pyrolysis equipment or rotary kiln pyrogenation equipment.The utility model overcomes the difficult technical barrier of pulverized coal pyrolysis oil dirt separation, and coal is efficiently converted into the oil product of high added value and the raw material of chemical products；Its efficiency of carbon con version is high, is that one kind cleans, efficient coal resources utilize system, meets national policy requirement.
Description
Technical field
The utility model is related to technical field of coal chemical industry, more particularly to a kind of fine coal high-efficiency cleaning prepare oil gas product be
System.
Background technology
The characteristics of China's energy resource structure is " oil starvation, few gas, coal resources relative abundance ", and coal is within one period from now on
It is still the main energy sources in China.Current domestic colliery is generally mined using machine, and the fine coal ratio in coal that produces accounts for 40%~80%,
Used mainly as fuel.Coal directly burning is not only the main source of CO2 emission, and is to cause other various dirts
One of major reason of dye problem.And fine coal direct gasification, chemical products with high added-value such as aromatic substance, coal tar be simultaneously in coal
Do not extracted, for dependence on foreign countries for oil reaches 60% country, actually a kind of waste of resource.Therefore,
Using fine coal as primary raw material efficiently, clean manufacturing liquid, gas products, the deficiency for alleviating China's oil and natural gas resource
With important strategic importance, while promoting national economy to develop in a healthy way, great resource and environmental benefit will be produced.
Pulverized coal pyrolysis, gasification and combustion technology are organically combined in the physicochemical property that different phase is reacted according to coal,
It is efficient, clean utilization low order fine coal produces liquid, the effective way of gas products.
Patent No. CN201410437582.X Chinese patent, disclose a kind of " Joint Production of pyrolysis of coal and gasification
Method ", this method include：(1) rough coal powder and fine breeze are isolated from feed coal；(2) by the rough coal powder with fluid bed
Mode is pyrolyzed, and obtains coal tar and semicoke；(3) semicoke caused by pyrolysis is gasified in a manner of fluid bed, obtained
To gas stream and high-temperature semi-coke, product gas and solid particle are isolated from the gas stream, and will be at least partly high
Warm semicoke and/or at least part product gas are returned in the pyrolytic process, the thermal source as the pyrolytic process；(4) will step
Suddenly the solid particle isolated in the fine breeze and step (3) isolated in (1) carries out coal gasification.This method is first
Fine coal is first divided into rough coal powder and fine breeze, rough coal powder utilizes fluidized bed pyrolysis and fluidized gasification coupling technique, and gasification is situated between
Matter is vapor and oxygen；Fine breeze uses slag gasification furnace, and gasifying medium is the mixing of oxygen rich gas or vapor and pure oxygen
Gas；The characteristics of its fluid bed powder coal gasification technology used be fine coal using oxygen vapor as the continuous gas making of gasifying agent, but fly
Ash quantity is greatly and residual carbon content is high (20%~30%) in flying dust, while residual carbon content is also higher (5~40%) in coal ash, that is, exists
The problem of suffering from vomiting and diarrhoea.Gasified raw material when fluidized gasification is used in this method is semicoke, but can equally have gasification flying dust
The problem of amount is big, and residual carbon content is higher in ash；Its other fluidized bed pyrolysis as thermal source, that is, employs solid using high-temperature semi-coke
The mode of heat carrier, the problem of oily dirt can not separate be present.
Patent No. CN201310331116.9 Chinese patent, disclose " a kind of PC-FB hydropyrolysis and gas
Change coupling process ", it comprises the following steps：Step 1, the thermal source of PC-FB hydropyrolysis stove is the conjunction from gasification furnace
Into gas, hydrogen source is made up of two parts：A part is the hydrogen in synthesis gas；Another part is the purified institute of gas of system generation
Obtained hydrogen；Step 2, the solid semicoke of hydropyrolysis generation is most of to be directly entered semicoke hopper, small portion by coke guidance tube
The small semicoke of gradation degree and pyrolysis gas enter cyclone separator together, and semicoke is obtained after cyclone separator separates and also enters semicoke material
In bucket；Step 3, the raw material of gasification furnace is the gained semicoke from hydropyrolysis, and semicoke and gasifying agent are gasifying by a certain percentage
Gasification reaction is carried out in reactor, generates the synthesis gas of high temperature, high-temperature synthesis gas as fluidized-bed hydrogenation pyrolysis oven thermal source with
Hydrogen source.This method uses fluidized bed pyrolysis fine coal, because not being classified to fine coal, the problem of oily dirt is difficult to separation be present.In addition
When being pyrolyzed, being gasified using fluid bed, fine powder because being quickly blown, can exist gasification flying dust amount it is big, ash in residual carbon content compared with
Height, the problem of efficiency of carbon con version is low.
Patent No. CN201210468532.9 Chinese patent, disclose a kind of " fine coal combined cyclic fluid bed point
Level pyrolytic gasification technique ", 0~6mm fine coal and a small amount of lime stone are sent into the carrying bed at middle part under combined cyclic fluid bed
Reactor mixes with gasification gas and circulating ash to be lifted up carrying out facing hydrogen pyrolysis, by gas solid separation, the height of first order separation
Warm thick semicoke returns to recirculating fluidized bed bottom, is reacted with oxidant and vapor at 800~1100 DEG C, generates gasification gas,
Matter Transfer is formed with being flowed up together with circulating ash；The high-temperature fine semicoke of second level separation is sent to and fluid bed middle and lower part Y types
The air flow bed of connection, reacted at 1200~1600 DEG C, the High Temperature Gas and liquid lime-ash eddy flow in the same direction of generation flow out gas obliquely
Fluidized bed, High Temperature Gas are ramped up into recirculating fluidized bed, and heat is provided for fluidized gasification；Liquid lime-ash flows downwardly into turbulent fluidised
The circulating ash bed of material of bed, heat exchange are solidified as solid lime-ash.Combined cyclic fluid bed of this technique based on a set of independent development is set
It is standby, the pyrolysis of coal and gasification are realized in a set of equipment, are not carried out carbon residue combustion process.
Patent No. CN201110352145.4 Chinese patent, disclose a kind of " three fluid bed solids heat carrier coals heat
The method for solving gasification, and combustion cascade utilization ".This method using high-temp circulating ash as solid thermal carriers, coal in fluidized bed pyrolysis stove with
High-temp circulating ash mixes, and generation pyrolysis separates out volatile matter, and volatilization lease making refrigerated separation obtains tar and is pyrolyzed coal gas, and pyrolysis of coal
Caused pyrolysis char is then sent to fluidized-bed gasification furnace, with vapor and O2For gasifying agent, gasification reaction occurs, produces conjunction
Into gas, the semicoke not being fully vaporized prior in gasification furnace is sent to CFBC stove again, blasts air and carries out conventional combustion,
Or blast O2/CO2Oxygen-enriched combusting is carried out, heats solid thermal carriers circulating ash, while high-temperature flue gas caused by burning is used to produce
Gasification agent steam needed for gasification furnace.This utility model carries out pyrolysis, char Gasification and the carbon residue burning of coal using fluid bed.Heat
Thermal source is solved using the high-temp circulating ash after burning, fluidized gas is using Partial cleansing rear pyrolysis coal gas；Char Gasification thermal source comes from
High-temperature semi-coke, gasifying agent use vapor and O2；Carbon residue burning is that not vaporized semicoke carries out oxygen-enriched combusting, heat in fluid bed
Source is the high temperature ash in combustion furnace, and oxidant uses air or O2/CO2, the high-temperature flue gas after burning is for producing needed for gasification furnace
Steam.Problems be present in this method：1) screening process is not carried out to fine coal, fines is in fluid bed because quickly being blown
Go out, cause that flying dust amount is big and residual carbon content is high, efficiency of carbon con version is low；2) using high-temp circulating ash as solid thermal carriers, fine coal and high temperature
In ash fine particle with pyrolysis raw coke oven gas mix, while exist pyrolysis raw coke oven gas oil dirt regardless of the problem of；3) normal conditions
Carbon residue accounting about 10~20% in the lime-ash of fluidized bed at elevated gasification, it is oxygen-enriched in fluid bed for not vaporized semicoke in this method
Burn the CO formed2Do not made full use of, only make use of the heat of flue gas, be unfavorable for CO2Emission reduction.
The content of the invention
The utility model provides the system that a kind of fine coal high-efficiency cleaning prepares oil gas product, overcomes pulverized coal pyrolysis oil dirt
Difficult technical barrier is separated, coal is efficiently converted into the oil product of high added value and the raw material of chemical products；Its efficiency of carbon con version is high,
It is that one kind cleans, efficient coal resources utilize system, meets national policy requirement.
In order to achieve the above object, the utility model is realized using following technical scheme：
The system that a kind of fine coal high-efficiency cleaning prepares oil gas product, including fine coal pretreatment unit, pyrolysis unit, gasification list
Member and fuel element, wherein fine coal pretreatment unit include drying equipment or drying equipment+size classification apparatus；As fine coal is located in advance
Reason unit only includes drying equipment, and corresponding fuel element uses fluidized bed combustion equipment；As fine coal pretreatment unit includes doing
Dry equipment and size classification apparatus, then corresponding fuel element include fluidized bed combustion equipment+air-flow bed burning equipment；
When fuel element uses fluidized bed combustion equipment, the fine coal pretreatment unit connects heat by fine coal transfer passage
Unit is solved, pyrolysis unit is by hot semicoke transfer passage and gasification gas conveying by connecting gasification unit；Gasification unit passes through heat
State Solid Conveying and Melting passage, hot waste gas transfer passage one connect fluidized bed combustion equipment；Fluidized bed combustion equipment passes through high temperature furnace slag
Transfer passage one connects high temperature slag cooler, and high temperature slag cooler connects gasification unit by steam transfer passage one；Gas
Change unit and cleaner two is connected by the gas transfer passage that gasifies；Pyrolysis unit connects dedusting by pyrolysis gas transfer passage and set
Standby one and gas purifier；Cleaner one connects fluidized bed combustion by dedusting ash transfer passage respectively with cleaner two and set
It is standby；Fluidized bed combustion equipment is connected with vapor transfer passage, oxygen-enriched or pure oxygen gas transfer passage；
When fuel element uses fluidized bed combustion equipment+air-flow bed burning equipment, the fine coal pretreatment unit passes through thick
Grain fine coal transfer passage connection pyrolysis unit, air-flow bed burning equipment is connected by particulate fine coal transfer passage；Pyrolysis unit leads to
Overheat semicoke transfer passage connects gasification unit with gasification gas transfer passage；Gasification unit passes through hot Solid Conveying and Melting passage, heat
Waste gas transfer passage one connects fluidized bed combustion equipment, and air-flow bed burning equipment is connected by hot waste gas transfer passage two；Air-flow
Bed burning equipment connects high temperature slag cooler by high temperature furnace slag transfer passage two, and fluidized bed combustion equipment passes through high temperature furnace slag
Transfer passage one connects high temperature slag cooler, and high temperature slag cooler connects gasification unit by steam transfer passage one；Gas
Change unit and cleaner two is connected by the gas transfer passage that gasifies；Pyrolysis unit connects dedusting by pyrolysis gas transfer passage and set
Standby one and gas purifier；Cleaner one connects air flow bed burning by dedusting ash transfer passage respectively with cleaner two and set
It is standby；The gentle fluidized bed combustion equipment of fluidized bed combustion equipment in addition with vapor transfer passage, oxygen-enriched or pure oxygen gas transfer passage
Connection.
The air-flow bed burning equipment connects equipment for gasification in fluidized bed by hot waste gas passage two, or/and passes through hot waste gas
Transfer passage two connects cleaner three, and cleaner threeway overheat exhaust steam passage three connects heat transmission equipment, and heat transmission equipment passes through
Steam transfer passage two connects gasification unit.
The gasification unit connects oxygen-containing gas transfer passage in addition.
The pyrolysis unit is fluidized bed pyrolysis equipment or rotary kiln pyrogenation equipment.
When the pyrolysis unit is rotary kiln pyrogenation equipment, while it is connected with hot waste gas transfer passage two；Rotary kiln pyrogenation
Equipment uses external-heat and inside and outside dual heating type rotary kiln pyrogenation equipment.
The gasification unit is equipment for gasification in fluidized bed.
Compared with prior art, the beneficial effects of the utility model are：
1) raw material fine coal is divided into particulate in advance in the case that the utility model is in raw material fine coal more than particulate fine coal accounting
Fine coal and coarse grain fine coal, using coarse grain fine coal as fluidized bed pyrolysis raw material, while avoided using high-temperature gasification gas as thermal source
When pyrolysis oven uses solid thermal carriers oil dirt regardless of the problem of, while solve particulate fine coal in fluid bed because quickly being blown
Go out, cause the problem of flying dust amount is big and residual carbon content is high, and efficiency of carbon con version is low；
2) solid product when the utility model produces is coal ash, is substantially free of carbon, and it is high to solve gasification ash content carbon
The problem of, it efficiently make use of coal resources；
3) tar yield can be improved, improves tar quality, is as pulverized coal pyrolysis heat transfer medium using the synthesis gas of hydrogen-rich
Coal tar creates advantage as oil substitutes)
4) the utility model approaches hot semicoke direct gasification, hot semicoke temperature with fluidized-bed reaction temperature, and normal
The mode that gasification is reheated after pyrolysis char is cooled down in rule technology is compared, and reduces energy consumption, improves the using energy source of system
Rate；
5) flue gas (the main component CO that the utility model is burnt with carbon residue after gasification2And oxygen), as fluid bed gas
Change the gasifying agent of stove, the CO obtained after carbon residue is burnt2CO is converted into, and takes full advantage of the oxygen in fuel element waste gas,
Coal resources efficiently are make use of, reduce greenhouse gases CO2Discharge capacity；
6) high temperature furnace slag obtained using burning produces steam, is effectively utilized the energy.
Brief description of the drawings
Fig. 1 is the structural representation for the system that a kind of fine coal high-efficiency cleaning described in the utility model prepares oil gas product
In figure：1. the fluidized gasification of 2. fluidized bed pyrolysis equipment of fine coal pretreatment unit, 3. rotary kiln pyrogenation equipment 4.
The oxygen-containing gas transfer passage 9. of 7. high temperature slag cooler of equipment 5. air-flow bed burning equipment, 6. fluidized bed combustion equipment 8.
The hot waste gas transfer passage 1 of 2 12. cleaner of cleaner one 10. gas purifier, 11. cleaner 3 13.
The high temperature furnace slag transfer passage one of 2 15. steam transfer passage of hot waste gas transfer passage, one 16. steam transfer passage 2 17.
18. the hot waste gas transfer passage three of 19. high temperature furnace slag transfer passage of heat-exchanger rig 2 20.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in figure 1, the system that a kind of fine coal high-efficiency cleaning described in the utility model prepares oil gas product, including fine coal are pre-
Processing unit 1, pyrolysis unit, gasification unit and fuel element, wherein fine coal pretreatment unit 1 include drying equipment or drying is set
Standby+size classification apparatus；As fine coal pretreatment unit 1 only includes drying equipment, corresponding fuel element uses fluidized bed combustion
Equipment 6；As fine coal pretreatment unit 1 includes drying equipment and size classification apparatus, then corresponding fuel element includes fluid bed
Combustion apparatus 6+ air-flows bed burning equipment 5；
When fuel element uses fluidized bed combustion equipment 6, the fine coal pretreatment unit 1 is connected by fine coal transfer passage
Pyrolysis unit, pyrolysis unit is by hot semicoke transfer passage and gasification gas conveying by connecting gasification unit；Gasification unit passes through
Hot Solid Conveying and Melting passage, hot waste gas transfer passage 1 connect fluidized bed combustion equipment 6；Fluidized bed combustion equipment 6 passes through height
Warm clinker transfer passage 1 connects high temperature slag cooler 7, and high temperature slag cooler 7 is connected by steam transfer passage 1
Gasification unit；Gasification unit connects cleaner 2 11 by the gas transfer passage that gasifies；Pyrolysis unit is conveyed by pyrolysis gas
Passage connects cleaner 1 and gas purifier 10；Cleaner 1 and cleaner 2 11 are conveyed by dedusting ash respectively
Passage connection fluidized bed combustion equipment 6；Fluidized bed combustion equipment 6 and vapor transfer passage, the conveying of oxygen-enriched or pure oxygen gas are logical
Road connects；
When fuel element uses fluidized bed combustion equipment 6+ air-flow bed burning equipments 5, the fine coal pretreatment unit 1 passes through
Coarse grain fine coal transfer passage connects pyrolysis unit, and air-flow bed burning equipment 5 is connected by particulate fine coal transfer passage；Pyrolysis unit
Gasification unit is connected with gasification gas transfer passage by hot semicoke transfer passage；Gasification unit by hot Solid Conveying and Melting passage,
Hot waste gas transfer passage 1 connects fluidized bed combustion equipment 6, and connecting air flow bed burning by hot waste gas transfer passage 2 14 sets
Standby 5；Air-flow bed burning equipment connects high temperature slag cooler 7 by high temperature furnace slag transfer passage two, and fluidized bed combustion equipment 6 is logical
Cross high temperature furnace slag transfer passage 1 and connect high temperature slag cooler 7, high temperature slag cooler 7 passes through steam transfer passage 1
Connect gasification unit；Gasification unit connects cleaner 2 11 by the gas transfer passage that gasifies；Pyrolysis unit passes through pyrolysis gas
Transfer passage connects cleaner 1 and gas purifier 10；Cleaner 1 and cleaner 2 11 pass through dedusting ash respectively
Transfer passage connection air-flow bed burning equipment 5；The gentle fluidized bed combustion equipment 5 of fluidized bed combustion equipment 6 conveys with vapor in addition
Passage, the connection of oxygen-enriched or pure oxygen gas transfer passage.
The air-flow bed burning equipment 5 connects equipment for gasification in fluidized bed 4 by hot waste gas passage 2 14, or/and passes through heat
Waste gas transfer passage 2 14 connects cleaner 3 12, and cleaner 3 12 connects heat transmission equipment by hot waste gas passage 3 20
18, heat transmission equipment logical 18 crosses steam transfer passage 2 16 and connects gasification unit.
The gasification unit connects oxygen-containing gas transfer passage 8 in addition.
The pyrolysis unit is fluidized bed pyrolysis equipment 2 or rotary kiln pyrogenation equipment 3.
When the pyrolysis unit is rotary kiln pyrogenation equipment 3, while it is connected with hot waste gas transfer passage 2 14；Rotary kiln heat
Solve equipment 3 and use external-heat and inside and outside dual heating type rotary kiln pyrogenation equipment.
The gasification unit is equipment for gasification in fluidized bed 4.
The technique that oil gas product is prepared using a kind of fine coal high-efficiency cleaning of the present utility model, including fine coal are pretreated
Journey, pyrolytic process, gasification and combustion process；The fine coal preprocessing process includes drying process or drying and grading
Process, wherein grading process are used to raw material fine coal being divided into coarse grain fine coal and particulate fine coal；Fine coal preprocessing process is in powder
Carried out in Coal pretreatment unit 1, pyrolytic process is carried out in pyrolysis unit, and gasification is carried out in gasification unit, burned
Journey is carried out in fuel element；Specific embodiment is as follows：
1) pyrolysis unit uses fluidized bed pyrolysis equipment 2 or rotary kiln pyrogenation equipment 3, and pyrolysis feed is raw material fine coal or warp
Coarse grain fine coal after grading, the thermal source of fluidized bed pyrolysis equipment 2 use the gasification gas from gasification unit；Rotary kiln pyrogenation
The thermal source of equipment 3 is the hot waste gas of gasification gas and/or fuel element from gasification unit；
2) gasification unit uses equipment for gasification in fluidized bed 4, and raw material is the semicoke of pyrolysis unit output, and thermal source is hot semicoke
With the hot waste gas of fuel element, above thermal source is passed through air or oxygen-enriched or pure oxygen in the case of providing shortage of heat, passed through in addition
Carbon burning provides the heat needed for gasification；Gasifying agent is hot waste gas caused by vapor and fuel element；
3) fuel element is combined using fluidized bed combustion equipment 6 or fluidized bed combustion equipment 6 and air-flow bed burning equipment 5
2 kinds of process programs；
Scheme one：During using fluidized-bed process, the raw material and thermal source of fluidized bed combustion equipment 6 are the heat of gasification unit output
Dedusting ash caused by the mixture and pyrolysis unit of state semicoke and inorganic matter, gasification unit, oxidant be vapor and it is oxygen-enriched or
Pure oxygen gas；
Scheme two：During 5 group technology of fluidized bed combustion equipment gentle using fluidized bed combustion equipment 6, fluid bed burns equipment 6
Raw material and thermal source be gasification unit output hot semicoke and inorganic matter mixture, oxidant is vapor and oxygen-enriched or pure
Carrier of oxygen；The raw material of air-flow bed burning equipment 5 is particulate fine coal and pyrolysis unit, gasification unit and dedusting caused by fuel element
Ash, oxidant is vapor and oxygen-enriched or pure oxygen gas；
4) product of pyrolysis unit is middle high heating value gas and high-quality tar, and the product of gasification unit is synthesis gas；Combustion
Hot waste gas caused by unit is burnt as thermal source, gasifying agent, or for producing steam；High temperature furnace slag is used to produce steam.
Granularity≤0.5mm of the particulate fine coal.
The maximum particle size of the coarse grain fine coal is the feed coal permission of fluidized bed pyrolysis equipment 2 or rotary kiln pyrogenation equipment 3
Maximum particle size, when pyrolysis unit uses fluidized bed pyrolysis equipment 2, the maximum particle size of coarse grain fine coal is 6mm；Using rotary kiln heat
When solving equipment 3, the maximum particle size of coarse grain fine coal is 30mm.
The mode of heating of rotary kiln pyrogenation equipment 3 is internal heat type, external-heat or inside and outside hybrid in the pyrolysis unit.
The main component that the fuel element produces hot waste gas is CO2And O2, hot waste gas is as equipment for gasification in fluidized bed 4
The thermal source of gasifying agent and thermal source, the thermal source of rotary kiln pyrogenation equipment 3 and heat-exchanger rig.
The high temperature furnace slag of the fuel element produces the thermal source of steam as high temperature slag cooler 7.
The coal gas and synthesis gas purify or are used as industrial chemicals source of the gas after unifying purification respectively.
In fine coal preprocessing process, when the accounting≤20% of particulate fine coal in raw material fine coal, only raw material fine coal is carried out
Dry, dried raw material fine coal enters pyrolysis unit；As the accounting ＞ 20% of particulate fine coal in raw material fine coal, to raw material powder
Coal is classified after drying, and the coarse grain fine coal for being classified to obtain enters pyrolysis unit, and particulate fine coal enters air-flow bed burning equipment 5.
Following examples are implemented under premised on technical solutions of the utility model, give detailed embodiment
With specific operating process, but the scope of protection of the utility model is not limited to following embodiments.Side used in following embodiments
Method is conventional method unless otherwise instructed.
【Embodiment 1】
As shown in figure 1, the technical process that a kind of fine coal high-efficiency cleaning described in the present embodiment prepares oil gas product is as follows：
1) raw material fine coal is pre-processed, the particulate fine coal accounting in such as raw materials used fine coal is more than 20%, is divided into thick
Grain fine coal and particulate fine coal；It is equal to 20% as the particulate fine coal accounting in raw materials used fine coal is less than, then only raw material fine coal is entered
Row drying process, without classification；
2) fluidized bed pyrolysis equipment 2 (fluidized bed pyrolysis stove) is fully entered without the raw material fine coal of classification；Or after classification
Coarse grain fine coal enters fluidized bed pyrolysis equipment 2, and particulate fine coal enters air-flow bed burning equipment 5 (air flow bed combustion furnace)；
3) thermal source of fluidized bed pyrolysis equipment 2 uses the gasification gas from equipment for gasification in fluidized bed 4 (fluidized-bed gasification furnace)；
Pyrolysis occurs in fluidized bed pyrolysis equipment 2 and separates out volatile matter for fine coal/coarse grain fine coal, obtains hot semicoke；Pyrolysis gas enters
To cleaner 1 and gas purifier 10, tar liquid and coal gas are obtained；
4) hot semicoke is entered in equipment for gasification in fluidized bed 4, and gasifying agent is the hot waste gas of vapor and fuel element,
Air (or oxygen-enriched or pure oxygen) can be passed through, the gasification gas produced partly or entirely enters fluidized bed pyrolysis equipment 2, remaining gas
Change gas and enter cleaner 2 11, synthesis gas is obtained after purification；
5) semicoke after gasifying enters fluidized bed combustion equipment 6, when not setting air-flow bed burning equipment 5, cleaner 1
The dedusting ash collected with cleaner 2 11 enters fluidized bed combustion equipment 6, and oxidant is oxygen-enriched or pure oxygen gas, caused
Hot waste gas enters equipment for gasification in fluidized bed 4, and as the gasifying agent of equipment for gasification in fluidized bed 4, high temperature furnace slag is used to pass through high temperature
Cooling of furnace slag device 7 produces steam；
6) dedusting ash that particulate fine coal and cleaner 1, cleaner 2 11 after being classified obtain enters air flow bed
Combustion apparatus 5, oxidant use vapor and oxygen-enriched or pure oxygen gas；Obtained hot waste gas burn partly or entirely as fluidisation
The gasifying agent of bed equipment for gasification 4, remainder hot waste gas are used to produce steam by heat-exchanger rig 18.
【Embodiment 2】
As shown in figure 1, the technical process that a kind of fine coal high-efficiency cleaning described in the present embodiment prepares oil gas product is as follows：
1) raw material fine coal is pre-processed, the particulate fine coal accounting in such as raw materials used fine coal is more than 20%, is divided into thick
Grain fine coal and particulate fine coal；Accounting such as particulate fine coal in raw material fine coal is less than 20%, then processing is only dried, without dividing
Level；
2) rotary kiln pyrogenation equipment 3 (rotary kiln pyrogenation stove) is fully entered without the raw material fine coal of classification；Or after classification
Coarse grain fine coal enters rotary kiln pyrogenation equipment 3, and particulate fine coal enters air-flow bed burning equipment 5 (air flow bed combustion furnace)；
3) thermal source of rotary kiln pyrogenation equipment 3 is the gasification gas and/or fuel element hot waste gas of equipment for gasification in fluidized bed 4；
Pyrolysis occurs in rotary kiln pyrogenation equipment 3 and separates out volatile matter for fine coal/coarse grain fine coal, obtains hot semicoke；Pyrolysis gas enters
Cleaner 1 and gas purifier 10, obtain tar liquid and coal gas；
4) hot semicoke is entered in equipment for gasification in fluidized bed 4, and gasifying agent is the hot waste gas of vapor and fuel element,
Air (or oxygen-enriched or pure oxygen) can be passed through, the gasification gas produced partly or entirely enters fluidized bed pyrolysis equipment 4, remaining gas
Change gas and enter cleaner 2 11, synthesis gas is obtained after purification；
5) semicoke enters fluidized bed combustion equipment 6 after gasifying, when not setting air flow bed burner installation 5, cleaner one
9th, the dedusting ash that cleaner 2 11 obtains enters fluidized bed combustion equipment 6, and oxidant is vapor and oxygen-enriched or purity oxygen
Body, caused hot waste gas enter equipment for gasification in fluidized bed 4, and as the gasifying agent of equipment for gasification in fluidized bed 4, high temperature furnace slag is used for
Steam is produced by high temperature slag cooler 7；
6) dedusting ash that particulate fine coal and cleaner 1, cleaner 2 11, cleaner 3 12 after being classified obtain
Air-flow bed burning equipment is entered with particulate fine coal, oxidant uses vapor and oxygen-enriched or pure oxygen gas；The heat that burning obtains
Exhaust gas section or all gasifying agent as equipment for gasification in fluidized bed 4, remainder high-temperature flue gas are used to pass through heat-exchanger rig 18
Produce steam or/and the thermal source of rotary kiln pyrogenation equipment 3.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. the system that a kind of fine coal high-efficiency cleaning prepares oil gas product, it is characterised in that single including coal charge pretreatment unit, pyrolysis
Member, gasification unit and fuel element, wherein coal charge pretreatment unit include drying equipment or drying equipment+size classification apparatus；
As coal charge pretreatment unit only includes drying equipment, corresponding fuel element uses fluidized bed combustion equipment；As coal charge pre-processes
Unit includes drying equipment and size classification apparatus, then corresponding fuel element includes fluidized bed combustion equipment+air flow bed burning
Equipment；
When fuel element uses fluidized bed combustion equipment, the coal charge pretreatment unit connects pyrolysis list by fine coal transfer passage
Member, pyrolysis unit is by hot semicoke transfer passage and gasification gas conveying by connecting gasification unit；Gasification unit passes through hot solid
Body transfer passage, hot waste gas transfer passage one connect fluidized bed combustion equipment；Fluidized bed combustion equipment is conveyed by high temperature furnace slag
Passage one connects high temperature slag cooler, and high temperature slag cooler connects gasification unit by steam transfer passage one；Gasification is single
Member connects cleaner two by the gas transfer passage that gasifies；Pyrolysis unit connects cleaner one by pyrolysis gas transfer passage
And gas purifier；Cleaner one connects fluidized bed combustion equipment by dedusting ash transfer passage respectively with cleaner two；
Fluidized bed combustion equipment is connected with vapor transfer passage, oxygen-enriched or pure oxygen gas transfer passage；
When fuel element uses fluidized bed combustion equipment+air-flow bed burning equipment, the coal charge pretreatment unit passes through semolina
Coal transfer passage connects pyrolysis unit, and air-flow bed burning equipment is connected by particulate fine coal transfer passage；Pyrolysis unit passes through heat
Semicoke transfer passage connects gasification unit with gasification gas transfer passage；Gasification unit passes through hot Solid Conveying and Melting passage, hot waste gas
Transfer passage one connects fluidized bed combustion equipment, and air-flow bed burning equipment is connected by hot waste gas transfer passage two；Air flow bed is fired
Burn equipment and high temperature slag cooler is connected by high temperature furnace slag transfer passage two, fluidized bed combustion equipment is conveyed by high temperature furnace slag
Passage one connects high temperature slag cooler, and high temperature slag cooler connects gasification unit by steam transfer passage one；Gasification is single
Member connects cleaner two by the gas transfer passage that gasifies；Pyrolysis unit connects cleaner one by pyrolysis gas transfer passage
And gas purifier；Cleaner one connects air-flow bed burning equipment by dedusting ash transfer passage respectively with cleaner two；
The gentle fluidized bed combustion equipment of fluidized bed combustion equipment connects with vapor transfer passage, oxygen-enriched or pure oxygen gas transfer passage in addition
Connect.
2. the system that a kind of fine coal high-efficiency cleaning according to claim 1 prepares oil gas product, it is characterised in that the gas
Fluidized bed combustion equipment connects equipment for gasification in fluidized bed by hot waste gas passage two, or/and is connected by hot waste gas transfer passage two
Cleaner three, cleaner threeway overheat exhaust steam passage three connect heat transmission equipment, and heat transmission equipment passes through steam transfer passage two
Connect gasification unit.
3. the system that a kind of fine coal high-efficiency cleaning according to claim 1 prepares oil gas product, it is characterised in that the gas
Change unit and connect oxygen-containing gas transfer passage in addition.
4. the system that a kind of fine coal high-efficiency cleaning according to claim 1 prepares oil gas product, it is characterised in that the heat
It is fluidized bed pyrolysis equipment or rotary kiln pyrogenation equipment to solve unit.
5. the system that a kind of fine coal high-efficiency cleaning according to claim 4 prepares oil gas product, it is characterised in that the heat
When solution unit is rotary kiln pyrogenation equipment, while it is connected with hot waste gas transfer passage two；Rotary kiln pyrogenation equipment uses external-heat
With inside and outside dual heating type rotary kiln pyrogenation equipment.
6. the system that a kind of fine coal high-efficiency cleaning according to claim 1 prepares oil gas product, it is characterised in that the gas
Change unit is equipment for gasification in fluidized bed.
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|---|---|---|---|
| CN201720489292.9U CN206887039U (en) | 2017-05-04 | 2017-05-04 | The system that a kind of fine coal high-efficiency cleaning prepares oil gas product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163330A (en) * | 2018-10-10 | 2019-01-08 | 永清环保股份有限公司 | A kind of domestic garbage pyrolysis gasification process system, processing method and electricity generation system |
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2017
- 2017-05-04 CN CN201720489292.9U patent/CN206887039U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163330A (en) * | 2018-10-10 | 2019-01-08 | 永清环保股份有限公司 | A kind of domestic garbage pyrolysis gasification process system, processing method and electricity generation system |
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