CN104804771B - A kind of clean gas generating, clean fuel combined production device and method - Google Patents
A kind of clean gas generating, clean fuel combined production device and method Download PDFInfo
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- CN104804771B CN104804771B CN201510149583.9A CN201510149583A CN104804771B CN 104804771 B CN104804771 B CN 104804771B CN 201510149583 A CN201510149583 A CN 201510149583A CN 104804771 B CN104804771 B CN 104804771B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
A kind of clean gas generating, clean fuel combined production device and method, including raw gas preparation system, coal tar upgrading conversion system, electricity generation system.Raw gas produced by coal tar oil extract reaction member carries out dedusting, tar recovery, desulfurization, the laggard gas turbine of deamination and is burnt, and combustion product gases energy is reclaimed in the form of electric energy, hot water, chilled water, it is achieved that the comprehensive utilization of gas energy.The preprocessed unit of the coal tar of recovery, coal tar hydrogenating unit, coal tar hydrogenating product separating-purifying unit are eventually converted into coal-based clean liquid fuel.Compared with prior art, the present invention is had an advantage in that, by heavy metal free, low NOX、SO2The clean gas generation technology of discharge is organically combined with coal-based clean fuel producing technology, it is achieved that the step comprehensive utilization of the efficient of low-order coal, clean conversion and energy.
Description
Technical field
The present invention relates to the high-efficiency cleaning trans-utilization of coal and coal poly-generation technical field, and in particular to a kind of coal is carried
Take coal tar and produce clean fuel, by-product raw gas is through oil-gas separation, dedusting, the laggard gas turbine combustion of desulfurizing and purifying process
The clean gas generating of generating, clean fuel combined production device and method.
Background technology
In the end of the year 2014, national capacity of installed generator is up to 1,360,190,000 kilowatts.And in terms of electrification structure, China's thermoelectricity installation is accounted for
The 75.2% of 67.4% and gross generation of whole installed capacitys；In thermoelectricity, coal fired power generation then accounts for more than 90%, still accounts for definitely excellent
Gesture status.Research shows that the CO2 emission that coal burning brings accounts for more than the 80% of China's energy total carbon emissions, titanium dioxide
Sulphur emissions account for more than the 90% of China's sulfur dioxide total release, and nitrogen oxides is about 50%, additionally, in city overhead, NOx can
To adsorb on aerial finely ground particles, with PAH, SO present in airX, bacterium, virus etc. form great harmfulness
PM10And PM2.5Particle, causes the exceedingly odious weather such as haze.As direct coal fired power generation is to environment especially atmospheric environment matter
The serious impact that amount is brought, thus promotion and application clean coal generation technology is imperative.One of most important of which approach
Exactly use coal gas to be generated electricity.The major technique direction of cleaning coal power generation can be divided into following 3 class：(1) it is gasified totally with coal
Based on thermoelectricity gas Poly-generation technology (Integrated Gasification Combined Cycle, IGCC)；(2) with coal
Clean coal generation technology based on partial gasification；(3) the clean coal generation technology based on pyrolysis of coal.Wherein, overall coal
Gasification Combined Cycle generation technology by coal be gasified totally based on integral gasification combined circulation technology (IGCC) due to
Its efficiency high, discharge the low feature of low, water consumption, receive in recent years both domestic and external pay close attention to and study, but due to investing
Height, the problems such as technology is excessively complicated, is also unable to reach large quantities of industrialized degree at present.Electric based on coal partial gasification
Poly-generation technology is mainly shown as the coal fired power generation that gasification, and combustion integrated utilization technology is combined with combined-cycle technology abroad
Technology and Poly-generation technology.The technology there is no application example, foreign countries to be also at pilot scale and commerical test stage at present at home.And
Clean coal generation technology based on pyrolysis of coal produces coal tar and coal gas while generating electricity.At present, the whole world is extensive
Recognize the importance and necessity of the technology.However, at present both at home and abroad based on pyrolysis of coal based on clean coal generation technology
Basic procedure be all that first coal for power generation is pyrolyzed, the tar in product carries out deep conversion after carrying phenol again, and in product
Solid semicoke be usually to enter in boiler of power plant burning directly as fuel or semicoke is gasified again, the coal gas warp of generation
Combustion power generation in gas turbine or boiler is entered back into after purification.This technical system is disadvantageous in that：One is that semicoke is direct
Burning yet suffers from the possibility of the particulate matters such as the PM2.5 of a large amount of generations；Two is that produced semicoke is individually gasified again
Combustion power generation, increases cost of investment and technological process afterwards, and Technical Economy and the total utilization ratio of the energy decline；Three is pyrolysis of coal
In product, tar yield is relatively low；Four is tar deep conversion using severe reaction conditions, tar conversion in technique be low, raw material is suitable
Answering property is poor.
Content of the invention
It is an object of the invention to provide one kind can realize coal resources efficiently, step, comprehensive utilization, so as to by fire coal
Generation technology, coal-based clean liquid fuel production technology combine, and realize that coal base energy multi-connection is produced and the step of coal resources is high
Clean gas generating, clean fuel combined production device and method that effect is utilized.
For reaching above-mentioned purpose, the inventive system comprises raw gas preparation system, coal tar upgrading conversion system and send out
Electric system；
Described raw gas preparation system includes feed unit, coal tar extraction unit and the raw gas purifying being sequentially connected
Unit；
Crude tar oil pretreatment unit that described coal tar upgrading conversion system includes being sequentially connected, tar refinery unit,
Tar conversion product cleanup separative element；The entrance of the wherein tar outlet of raw gas purifying unit and crude tar oil pretreatment unit
It is connected；
Described electricity generation system includes gas purification unit, gas turbine power generating unit, heat supply and the cooling being sequentially connected
Unit；Wherein the entrance of gas purification unit is connected with the gas exit of raw gas purifying unit, the gas of tar refinery unit
Outlet is connected with the entrance of gas turbine power generating unit.
Described coal tar extraction unit include entrance be connected with feed unit, gas exit and raw gas purifying unit phase
Coal tar extraction reactor even, coal tar extraction reactor is a kind of using high magnification is built-in, external Two-way Cycle heat ash or many
The quick upgrading reforming unit of integrated fine coal of hole medium activity bed or inert bed material as heat carrier.
One-level gas-particle separation device that described raw gas purifying unit includes being sequentially connected, depth deduster, primary oil-
Gas knockout tower and depth Oil-gas Separation tower, the wherein entrance of one-level gas-particle separation device are connected with coal tar extraction reactor, depth
The outlet of Oil-gas Separation tower is connected with gas purification unit, and one-level gas-particle separation device, the outlet of depth deduster lower end are respectively with one
Grade particles circulator, the entrance of fine grained circulator are connected, primary granule circulator, the outlet of fine grained circulator lower end and coal tar
Oil extract reactor is connected, and one-level oil-gas knockout tower, the tar outlet of depth Oil-gas Separation tower lower end are connected with tar storage tank,
Tar storage tank is connected with crude tar oil pretreatment unit.
Described coal tar extraction reactor puts particle circulator and the cycle rate control for controlling granule organics
Device processed, built-in particle circulator by the inner member with special internal runner design, be partially formed Reynolds number 3000～
10000 high-speed eddy region, realizes that within the time of 0.01～0.1s 50～70% carbon containing coarse granules are quick with pyrolysis gas
Efficiently separate.
Described built-in granule organics controller by fluid bed bed pressure drop change in coal tar extraction reactor,
In riser, solid holdup change, reaction temperature, pyrolysis coal gas change of component feed back the modulation for realizing carbon containing coarse granule internal circulating load.
Described crude tar oil pretreatment unit includes tar purifying tower and primary distillation purifying column, wherein tar purification
Purifying column is connected with tar storage tank through tar surge tank, and between tar surge tank and tar purifying tower, tar purification
Tar purifying tower feed pump is separately installed with pipeline between purifying column and primary distillation purifying column and primary distillation is net
Change tower feed pump；
Pre-hydrotreating reaction tower that described tar refinery unit includes being sequentially connected, pre-hydrotreating reaction product knockout tower, gas
Reaction tower gentle phase hydrogenation reaction product knockout tower is mutually hydrogenated with, and the wherein entrance of pre-hydrotreating reaction tower is fed through pre-hydrotreating reaction tower
Pump is connected with the outlet of primary distillation purifying column, separating obtained unconverted asphalitine and auxiliary agent in pre- hydrogenation products knockout tower
Mixture flows through outlet at bottom and flows back in pre-hydrotreating reaction tower, and gas phase hydrogenation reaction product knockout tower tower bottom product is through outlet
It is connected with tar conversion product cleanup separative element entrance, gained after purifying through oil-gas separation, dedusting, desulfurization, deamination successively
The C1-C3 light components that coal gas is purified with the output of gas phase hydrogenation reaction product knockout tower tower top outlet converge rear and gas turbine power generation
The entrance of unit is connected；
Described tar conversion product cleanup separative element includes going out with gas phase hydrogenation reaction product knockout tower tower bottom product
The hydrogenation products rectifying column that mouth is connected, hydrogenation products rectifying column are received by light fraction outlet, restructuring sub-export and light component respectively
Collection tank, heavy constituent collecting tank are connected, and the waste gas outlet tail gas purification tower of hydrogenation products rectifying tower top is connected.
Described gas purification unit includes coal gas depth gas wash tower, desulfurizing tower and the deammoniation tower being sequentially connected, wherein coal
The entrance of gas depth gas wash tower is connected with the gas exit of depth Oil-gas Separation tower；
Described gas turbine power generating unit gas turbine power generating unit includes gas exit, the gas phase hydrogenation with deammoniation tower
The gas compression pump that product knockout tower tower top outlet is connected, the outlet of gas compression pump are connected with gas turbine by the road,
In gas turbine, gas-fired excess air factor is 1.05～1.20, and the pipeline being connected with gas turbine in gas compression pump
On be also communicated with preheated air pipeline, through gas turbine produce high-temperature flue gas enter combustion gas turbine in expansion work drive generate electricity
Machine generates electricity, and the middle pressure steam that the combustion gas that discharges after expansion work in combustion gas turbine goes successively to produce in waste heat boiler enters steam
In turbine, expansion work drives another electrical power generators, and the flue gas that waste heat boiler is produced after heat exchange is through arranging outside chimney；
Described heat supply and cooling unit include the double-effect lithium bromide refrigeration that the middle temperature exhaust steam that is discharged with steam turbine is connected
Unit, the low temperature supplying cold water and middle warm water produced by double-effect lithium bromide refrigeration unit are respectively enterd in heat accumulation tower and cold-storage tower.
Described steam turbine can be back pressure type or pumping paramodulant or condensing-type.
The inventive method is comprised the following steps：
1) coal dust of 50～400 μm of the particle diameter, water content for preparing feed unit less than 2.0wt% is sent through fine coal conveyer
Enter to complete the quick upgrading conversion of coal dust in coal tar extraction reactor, the transforming agent that fine coal conveyer is passed through is water vapour and sky
The middle one or two kinds of of the oxygen rich gas of gas or oxygen content more than the 30～90vol% of pure oxygen or oxygen content of 99.6vol% with
On through the blender equal phase materials that formed of mixing；
2) carbon containing of the gas-solid fluid-mixing produced in coal tar extraction reactor at the top of coal tar extraction reactor is caught
The solid particle for collecting gained after particle carries out once gas-solid two-phase laminated flow enters built-in particle circulator, circulates in built-in particle
Under the control of rate controller, returned in coal tar extraction reactor with the returning charge rate loop for setting, coal tar oil extract is reacted
The inorganic carbonaceous particle produced in device enters ash collection tank through its bottom ashe outlet, and after preliminary gas-particle separation, gained contains
The high-temp solid material that tar and dust raw gas are trapped by raw gas purifying unit is recycled back into coal tar by its bottom inlet
Oil extract reactor, separating obtained tar enter tar storage tank；
3) tar storage tank by tar send into crude tar oil pretreatment unit carry out purifying, purify after send into tar refinery unit
Pre-hydrotreating reaction tower, pre- hydrogenation products enter pre- hydrogenation products knockout tower by pre-hydrotreating reaction top of tower, and after separating, gained is light
Component enters gas phase hydrogenation reaction tower by the outlet of pre- hydrogenation products separation column, separating obtained in pre- hydrogenation products knockout tower
Unconverted asphalitine and agent mixture flow through outlet at bottom and flow back in pre-hydrotreating reaction tower and proceed hydro-conversion,
Gas phase hydrogenation product enters gas phase hydrogenation reaction product knockout tower, gas phase hydrogenation reaction product point by gas phase hydrogenation reaction top of tower
Send into hydrogenation products rectifying column from tower tower bottom product, hydrogenated product rectification tower obtain after processing light component, component is given respectively
Enter light component collecting tank and heavy constituent collecting tank, hydrogenation products rectifying tower top waste gas enters tail gas purification tower；
4) coal gas of raw gas purifying unit sends into gas purification unit successively by the road through oil-gas separation, dedusting, de-
What sulphur, deamination were obtained after purifying purifies the C1-C3 light components remittance of coal gas and the output of gas phase hydrogenation reaction product knockout tower tower top outlet
4000～the 10000kJ/Nm of Lower heat value formed after conjunction3Fuel combination enter gas compression pump boosting after enter gas turbine
Fully burnt in gas-turbine combustion chamber with the air for passing through preheating, 800～1200 DEG C of high temperature cigarettes produced by burning
Gas enters expansion work in combustion gas turbine, drives electrical power generators, 400～600 DEG C discharged after expansion work in combustion gas turbine
Combustion gas go successively in waste heat boiler produce middle pressure steam enter steam turbine in expansion work, drive electrical power generators,
The middle temperature flue gas that steam turbine is discharged enters double-effect lithium bromide refrigeration unit and produces low temperature supplying cold water and middle warm water, waste heat respectively
80～100 DEG C, SO that boiler is produced after heat exchange2Concentration is less than 5mg/Nm3, NOXConcentration is less than 20mg/Nm3, dust content
It is less than 1mg/Nm3Flue gas through outside chimney arrange.Additionally, gas-fired temperature range is controlled at 800～1200 DEG C in gas turbine,
Thermal NO during gas-fired can be suppressed to greatest extentXGeneration.
Thermo parameters method, wall inside described coal tar extraction reactor is passed through with the thermograde of reaction core space
Built-in particle circulator, primary granule circulator, the solid particle circulating ratio under the control of fine grained circulator are being controlled.
Described coal gas desulfurization can adopt wet type desulfurizing or dry desulfurization, and when using dry desulfurization, desulfurizing tower is interior
Portion is filled with certain height and possesses H at 20～50 DEG C2S adsorbing and removings activity catalyst layer, described catalyst be with
SiO2,Al2O3,TiO2In one kind or composite oxides be carrier, with Fe2O3,CuO,ZnO,MnO2In a kind of or several
Plant the bimetallic or multimetal reforming catalyst for active component.
Compared with direct coal-fired power generator set, following beneficial result is can achieve：
1) coal-based clean oil product fuel production and fuel gas generation technology have been carried out highly integrated；
2) the efficient of coal resources, cleaning and cascade utilization are achieved；
3) pyrolysis coal gas is through the laggard gas turbine power generation of purified treatment, PM in produced flue gas2.5And PM10Etc. can inhale
Enter particle concentration extremely low；
4) desulfurization before gas-fired, without the need for rearmounted flue gas desulfurization, denitration device, significantly cuts down investment intensity, can achieve
SO2、NOXUltra-low concentration discharge, at the same hardly leaded in combustion product gases, chromium, cadmium, arsenic, etc. heavy metal.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
In figure：1st, 2, fine coal drying room 3, fine coal conveyer 4, coal tar extraction reactor 5, built-in particle between prepared by fine coal
Circulator 6, built-in granule organics controller 7, one-level gas-particle separation device 8, primary granule circulator 9, depth deduster
10th, fine grained circulator 11, one-level oil-gas knockout tower 12, depth Oil-gas Separation tower 13, tar storage tank 14, tar purifying
Tower 15, primary distillation purifying column 16, pre-hydrotreating reaction tower 17, pre-hydrotreating reaction product knockout tower 18, gas phase hydrogenation reaction tower 19,
Gas phase hydrogenation reaction product knockout tower 20, hydrogenation products rectifying column 21, light component collecting tank 22, heavy constituent collecting tank 23, tail gas
Purifying column 24, coal gas depth gas wash tower 25, coal gas desulfurization tower 26, coal gas deammoniation tower 27, gas compression pump 28, gas turbine 29,
Combustion gas turbine 30, waste heat boiler 31, steam turbine 32, generator 33, refrigeration unit 34, heat accumulation tower 35, cold-storage tower 36, chimney
37th, fine coal nozzle 38, go into operation charging nozzle 39, ash collection tank 40, coal tar extraction reactor bottom inlet 41, one-level
Oil-gas knockout tower entrance 42, one-level oil-gas knockout tower tower top outlet 43, tar reservoir inlet 44, the outlet of tar tank bottom
45th, tar surge tank 46, tar surge tank entrance 47, tar surge tank outlet at bottom 48, tar purifying tower feed pump 49,
The outlet 50, primary distillation purifying column feed pump 51 of tar purifying top of tower, primary distillation purifying column top exit 52, pre-add
Hydrogen reaction tower feed pump 53, pre-hydrotreating reaction top of tower outlet 54, the pre- hydrogenation products knockout tower entrance 55, pre- hydrogenation products of entrance
Separation column outlet 56, pre- hydrogenation products knockout tower outlet at bottom 57, gas phase hydrogenation reaction top of tower outlet 58, gas phase hydrogenation
Product knockout tower tower bottom product is through exporting 60-61, the outlet 62, light component collecting tank entrance 63 of hydrogenation products rectifying column, weight
At the top of Fraction collection tank entrance 64, the outlet 65, coal gas depth gas wash tower entrance 66, coal gas depth gas wash tower of depth Oil-gas Separation tower
Outlet 67, coal gas desulfurization tower entrance 68, coal gas desulfurization top of tower outlet 69, coal gas deammoniation tower entrance 70, gas phase hydrogenation reaction is produced
Thing knockout tower tower top outlet 71, preheated air.
Specific embodiment
In order that technical scheme and advantage are more clear apparent, below in conjunction with the accompanying drawings and embodiment, to this
A kind of bright applied disclosed clean gas generate electricity, clean fuel combined production device and method are further elaborated.
Referring to Fig. 1, the present invention includes raw gas preparation system, coal tar upgrading conversion system and electricity generation system；
Described raw gas preparation system includes feed unit, coal tar extraction unit and the raw gas purifying being sequentially connected
Unit；
Crude tar oil pretreatment unit that described coal tar upgrading conversion system includes being sequentially connected, tar refinery unit,
Tar conversion product cleanup separative element；The tar outlet of the wherein entrance of crude tar oil pretreatment unit and raw gas purifying unit
It is connected；
Described electricity generation system includes gas purification unit, gas turbine power generating unit, heat supply and the cooling being sequentially connected
Unit；Wherein the entrance of gas purification unit is connected with the gas exit of raw gas purifying unit, the gas of tar refinery unit
Outlet is connected with the entrance of gas turbine power generating unit.
Described feed unit includes 1, fine coal drying room 2 and fine coal conveyer 3 between the fine coal preparation being sequentially connected, described
The outlet of fine coal conveyer 3 be connected with the fine coal nozzle 38 of coal tar extraction unit.
Described coal tar extraction unit reaction member include entrance be connected with feed unit, gas exit and raw gas net
Change the coal tar extraction reactor 4 that unit is connected, 4 lower end of coal tar extraction reactor is connected with ash collection tank 39, in coal tar
Particle circulator 5 and the granule organics control for controlling particle circulator cycle rate are provided with oil extract reactor 4
Device processed 6.
Described raw gas purifying unit includes the one-level gas-particle separation device 7, depth deduster 9, one-level being sequentially connected
Oil-gas knockout tower 11 and depth Oil-gas Separation tower 12, the wherein entrance of one-level gas-particle separation device 7 and coal tar extraction reactor 4
It is connected, the outlet of depth Oil-gas Separation tower 12 is connected with gas purification unit, under one-level gas-particle separation device 7, depth deduster 9
Bring out mouth to be connected with the entrance of primary granule circulator 8, fine grained circulator 10 respectively, primary granule circulator 8, fine grained is followed
The outlet of 10 lower end of ring device is connected with coal tar extraction reactor 4, one-level oil-gas knockout tower 11,12 lower end of depth Oil-gas Separation tower
Tar outlet be connected with tar storage tank 13, tar storage tank 13 is connected with crude tar oil pretreatment unit.
Described crude tar oil pretreatment unit includes tar purifying tower 14 and primary distillation purifying column 15, wherein tar
Purifying tower 14 is connected with tar storage tank 31 through tar surge tank 45, and in tar surge tank 45 and tar purifying tower 14
Between, be separately installed with tar purifying tower on the pipeline between tar purifying tower 14 and primary distillation purifying column 15 and enter
Material pump 48 and primary distillation purifying column feed pump 50；
Described tar refinery unit includes pre-hydrotreating reaction tower 16, the pre-hydrotreating reaction product knockout tower being sequentially connected
17th, 18 gentle phase hydrogenation reaction product knockout tower 19 of gas phase hydrogenation reaction tower, wherein the entrance of pre-hydrotreating reaction tower 16 is through pre-add
Hydrogen reaction tower feed pump 52 is connected with the outlet of primary distillation purifying column 15, in pre- hydrogenation products knockout tower 17 separating obtained not
The asphalitine and agent mixture of conversion flows through outlet at bottom 56 and flows back in pre-hydrotreating reaction tower 16, and gas phase hydrogenation reaction is produced
19 tower bottom product of thing knockout tower is connected with tar conversion product cleanup separative element entrance through outlet 58, gas phase hydrogenation reaction product
The C1-C3 light components of the output of 19 tower top outlet of knockout tower 70 are connected with the entrance of gas turbine power generating unit after converging；
Described tar conversion product cleanup separative element includes and 19 tower bottom product of gas phase hydrogenation reaction product knockout tower
The hydrogenation products rectifying column 20 that outlet is connected, hydrogenation products rectifying column 20 is respectively by light fraction outlet 60, restructuring sub-export 61
It is connected with light component collecting tank 21, heavy constituent collecting tank 22, the waste gas outlet tail gas purification tower on the top of hydrogenation products rectifying column 20
23 are connected.
Described gas purification unit includes the coal gas depth gas wash tower 24, desulfurizing tower 25 being sequentially connected and deammoniation tower 26,
Wherein the entrance of coal gas depth gas wash tower 24 is connected with the gas exit of depth Oil-gas Separation tower 12；
Described gas turbine power generating unit gas turbine power generating unit includes adding with the gas exit of deammoniation tower 26, gas phase
The gas compression pump 27 that 19 tower top outlet 70 of hydroformylation reaction product knockout tower is connected, the outlet of gas compression pump 27 by the road with combustion gas
Turbine 28 is connected, and is also communicated with preheated air pipeline 71 with gas turbine 28 on the pipeline that gas compression pump 27 is connected, and passes through
The high-temperature flue gas that gas turbine 28 is produced enter expansion work in combustion gas turbine 29 and drive generator 32 to generate electricity, in combustion gas turbine 29
The combustion gas that discharges after expansion work goes successively to expand in the middle pressure steam entrance steam turbine 31 produced in waste heat boiler 30 and does
Work(drives another generator 32 to generate electricity, and the flue gas that waste heat boiler 30 is produced after heat exchange is arranged through chimney 36 is outer；
Described heat supply and cooling unit include the double-effect lithium bromide system that the middle temperature flue gas that is discharged with steam turbine 31 is connected
Cold group 33, the low temperature supplying cold water and middle warm water produced by double-effect lithium bromide refrigeration unit 33 respectively enter heat accumulation tower 34 and store
In cold tower 35.
The clean gas of the present invention generate electricity, clean fuel co-production is as follows：
The powder of 50～400 μm of the particle size range for preparing in 1 between fine coal preparation is aqueous after drying in fine coal drying room 2
Amount is less than 2.0wt%, and qualified coal dust enters reactor through fine coal conveyer 3 by the fine coal nozzle 37 of coal tar extraction reactor 4
Inside, in 450～850 DEG C, quickly completes the fast pyrogenation conversion of coal dust under the operating condition of 0.1～1.0MPa.Coal tar is carried
Take the feed nozzle 38 of reactor 4 to go into operation charging nozzle for reactor.
Carbon containing of the gas-solid fluid-mixing produced in coal tar extraction reactor 4 at the top of coal tar extraction reactor 4 is caught
The solid particle for collecting gained after particle carries out once gas-solid two-phase laminated flow enters built-in particle circulator 5, circulates in built-in particle
Under the control of rate controller 6, coal tar extraction reactor 4 is returned with certain returning charge rate loop.
The inorganic carbonaceous particle produced in coal tar extraction reactor 4 enters ash collection tank through its bottom ashe outlet
39, after preliminary gas-particle separation, gained passes sequentially through one-level gas-particle separation device 7, depth deduster containing tar and dust raw gas
9 realize separating with solids stream containing oil gas.The high-temp solid material of one-level gas-particle separation device 7, depth deduster 9 trapping
Coal tar extraction reactor is recycled back into by its bottom inlet 40 by primary granule circulator 8, fine grained circulator 10 respectively
4, complete circulation of the solid material in coal tar extraction reactor.The coal gas containing tar exported at the top of depth deduster 9 passes through
Entrance 41 enters one-level oil-gas knockout tower 11, and air-fuel mixture fluid in one-level oil-gas knockout tower 11 carries out initial gross separation, enters
The preliminary oil-gas of row still contains the coal gas of a large amount of light oil constituents and enters depth by 11 tower top outlet 42 of one-level oil-gas knockout tower after separating
Oil-gas Separation tower 12, by entrance 43 after in one-level oil-gas knockout tower 11, depth Oil-gas Separation tower 12, separating obtained tar confluxes
Tar storage tank 13 is entered, tar tank bottom outlet 44 is connected with 45 entrance 46 of tar surge tank, 45 bottom of tar surge tank
Outlet 47 is connected with 14 feed pump 48 of tar purifying tower, the tar after purifying and dedusting by tar purifying tower 14 at the top of
Outlet 49 enters primary distillation purifying column 15 through primary distillation purifying column feed pump 50, and the tar after distil(l) is by primary distillation
15 top exit 51 of purifying column enters pre-hydrotreating reaction tower 16 through pre-hydrotreating reaction tower feed pump 52, and pre- hydrogenation products are by being hydrogenated with advance
16 top exit 53 of reaction tower enters pre- hydrogenation products knockout tower 17 through entrance 54, and after separating, the light component of gained is produced by pre- hydrogenation
17 top exit of thing knockout tower 55 enters gas phase hydrogenation reaction tower 18, separating obtained unconverted in pre- hydrogenation products knockout tower 17
Asphalitine and agent mixture flow through outlet at bottom 56 and flow back in pre-hydrotreating reaction tower 16 and proceed hydro-conversion.
Gas phase hydrogenation product enters gas phase hydrogenation reaction product knockout tower 19 by 18 top exit 57 of gas phase hydrogenation reaction tower,
19 tower bottom product of gas phase hydrogenation reaction product knockout tower is connected with 20 entrance 59 of hydrogenation products rectifying column through outlet 58, and hydrogenation is produced
Thing rectifying column 20 exports 60,61 entrances 62 respectively with light component collecting tank 21, the entrance 63 of heavy constituent collecting tank 22 and is connected.
Hydrogenation products rectifying column 20 pushes up waste gas and enters tail gas purification tower 23 through outlet.
12 top de-oiling gas exit 64 of depth Oil-gas Separation tower is connected with 24 entrance 65 of coal gas depth gas wash tower, coal gas
24 top exit 66 of depth gas wash tower is connected with 25 entrance 67 of coal gas desulfurization tower, 25 top exit 68 of coal gas desulfurization tower and coal gas
26 entrance 69 of deammoniation tower is connected, the purification coal gas of gained and gas phase after purifying through oil-gas separation, dedusting, desulfurization, deamination successively
19 tower top outlet of hydrogenation reaction product knockout tower 70 output C1-C3 light components converge after enter gas compression pump 27 boost laggard
Enter gas turbine 28 fully to be burnt in gas-turbine combustion chamber with the air 71 through preheating, 800 produced by burning
～1200 DEG C of high-temperature flue gas enter expansion work in combustion gas turbine 29, drive generator 32 to generate electricity, and expansion in combustion gas turbine 29 is done
The middle pressure steam that the combustion gas of 400～600 DEG C discharged after work(goes successively to produce in waste heat boiler 30 is entered in steam turbine 31
Expansion work, drives another generator 32 to generate electricity, and the middle temperature flue gas that steam turbine 31 is discharged enters double-effect lithium bromide refrigeration unit
33 produce low temperature supplying cold water and middle warm water respectively.Produced low temperature supplying cold water and middle warm water respectively enter heat accumulation tower 34 and
Stand-by in cold-storage tower 35.80～100 DEG C of flue gases that waste heat boiler 30 is produced after heat exchange are arranged through chimney 36 is outer.
Claims (8)
1. a kind of clean gas generate electricity, clean fuel combined production device, it is characterised in that：Including raw gas preparation system, coal tar
Upgrading conversion system and electricity generation system；
Described raw gas preparation system includes feed unit, coal tar extraction unit and the raw gas purifying list being sequentially connected
Unit；
Crude tar oil pretreatment unit that described coal tar upgrading conversion system includes being sequentially connected, tar refinery unit, tar
Converted product purification separation unit；The entrance phase of the wherein tar outlet of raw gas purifying unit and crude tar oil pretreatment unit
Even；
Described electricity generation system includes gas purification unit, gas turbine power generating unit, heat supply and the cooling unit being sequentially connected；
Wherein the entrance of gas purification unit is connected with the gas exit of raw gas purifying unit, the gas vent of tar refinery unit with
The entrance of gas turbine power generating unit is connected；
Described coal tar extraction unit includes that entrance is connected with feed unit, gas exit is connected with raw gas purifying unit
Coal tar extraction reactor (4), coal tar extraction reactor (4) adopt built-in high magnification, external Two-way Cycle heat ash or porous to be situated between
The quick upgrading reforming unit of integrated fine coal of matter activity bed or inert bed material as heat carrier；
Described coal tar extraction reactor (4) built-in particle circulator (5) and the circulation speed for controlling granule organics
Rate controller (6), built-in particle circulator (5) are being partially formed Reynolds by the inner member with special internal runner design
The high-speed eddy region of number 3000～10000, realizes 50～70% carbon containing coarse granules and rough coal within the time of 0.01～0.1s
Gas is rapidly and efficiently separated.
2. clean gas according to claim 1 generate electricity, clean fuel combined production device, it is characterised in that：Described rough coal
One-level gas-particle separation device (7) that gas clean unit includes being sequentially connected, depth deduster (9), one-level oil-gas knockout tower (11)
With depth Oil-gas Separation tower (12), the wherein entrance of one-level gas-particle separation device (7) is connected with coal tar extraction reactor (4), deep
The outlet of degree Oil-gas Separation tower (12) is connected with gas purification unit, one-level gas-particle separation device (7), depth deduster (9) lower end
Outlet is connected with the entrance of primary granule circulator (8), fine grained circulator (10) respectively, primary granule circulator (8), carefully
The outlet of particle circulator (10) lower end is connected with coal tar extraction reactor (4), one-level oil-gas knockout tower (11), depth oil gas
The tar outlet of knockout tower (12) lower end is connected with tar storage tank (13), tar storage tank (13) and crude tar oil pretreatment unit phase
Even.
3. clean gas according to claim 1 generate electricity, clean fuel combined production device, it is characterised in that：Described is built-in
Granule organics controller (6) is by containing in the interior fluid bed bed pressure drop change of coal tar extraction reactor (4), riser admittedly
Rate change, reaction temperature, pyrolysis coal gas change of component feed back the modulation for realizing carbon containing coarse granule internal circulating load.
4. clean gas according to claim 1 generate electricity, clean fuel combined production device, it is characterised in that：Described thick Jiao
Oily pretreatment unit includes tar purifying tower (14) and primary distillation purifying column (15), wherein tar purifying tower (14)
Be connected with tar storage tank (13) through tar surge tank (45), and tar surge tank (45) and tar purifying tower (14) it
Between, be separately installed with tar purifying tower on the pipeline between tar purifying tower (14) and primary distillation purifying column (15)
Feed pump (48) and primary distillation purifying column feed pump (50)；
Described tar refinery unit includes pre-hydrotreating reaction tower (16), the pre-hydrotreating reaction product knockout tower being sequentially connected
(17), gas phase hydrogenation reaction tower (18) is gentle phase hydrogenation reaction product knockout tower (19), and wherein pre-hydrotreating reaction tower (16) enter
Mouth is connected with the outlet of primary distillation purifying column (15) through pre-hydrotreating reaction tower feed pump (52), pre- hydrogenation products knockout tower (17)
In separating obtained unconverted asphalitine and agent mixture flow through outlet at bottom (56) and flow back into pre-hydrotreating reaction tower
(16), in, gas phase hydrogenation reaction product knockout tower (19) tower bottom product is through exporting (58) and tar conversion product cleanup separative element
Entrance is connected, the purification coal gas and gas phase hydrogenation reaction product of gained after purifying through oil-gas separation, dedusting, desulfurization, deamination successively
The C1-C3 light components that knockout tower (19) tower top outlet (70) is exported are connected with the entrance of gas turbine power generating unit after converging；
Described tar conversion product cleanup separative element includes going out with gas phase hydrogenation reaction product knockout tower (19) tower bottom product
The hydrogenation products rectifying column (20) that mouth is connected, hydrogenation products rectifying column (20) are separated by light fraction outlet (60), restructuring respectively
Mouth (61) is connected with light component collecting tank (21), heavy constituent collecting tank (22), and the waste gas that hydrogenation products rectifying column (20) is pushed up goes out
Mouth tail gas purification tower (23) is connected.
5. clean gas according to claim 1 generate electricity, clean fuel combined production device, it is characterised in that：Described coal gas
Clean unit includes coal gas depth gas wash tower (24), desulfurizing tower (25) and the deammoniation tower (26) being sequentially connected, wherein coal gas depth
The entrance of gas wash tower (24) is connected with the gas exit of depth Oil-gas Separation tower (12)；
Described gas turbine power generating unit gas turbine power generating unit includes gas exit, the gas phase hydrogenation with deammoniation tower (26)
The gas compression pump (27) that product knockout tower (19) tower top outlet (70) is connected, the outlet of gas compression pump (27) is by the road
It is connected with gas turbine (28), in gas turbine, gas-fired excess air factor is 1.05～1.20, and in gas compression pump
(27) preheated air pipeline is also communicated with the pipeline being connected with gas turbine (28), through the high temperature cigarette that gas turbine (28) is produced
Gas enters expansion work in combustion gas turbine (29) and drives generator (32) to generate electricity, and is discharged in combustion gas turbine (29) after expansion work
Combustion gas goes successively to expansion work in middle pressure steam entrance steam turbine (31) produced in waste heat boiler (30) and drives another
Motor (32) generates electricity, and the flue gas that waste heat boiler (30) is produced after heat exchange is arranged through chimney (36) outward；
The double-effect lithium bromide refrigeration that the middle temperature exhaust steam that described heat supply and cooling unit include with steam turbine (31) is discharged is connected
Unit (33), the low temperature supplying cold water and middle warm water produced by double-effect lithium bromide refrigeration unit (33) respectively enter heat accumulation tower (34)
And in cold-storage tower (35)；
Described steam turbine (31) can be back pressure type or pumping paramodulant or condensing-type.
6. a kind of clean gas such as any one device in claim 1-5 generate electricity, clean fuel co-production, its feature exists
In comprising the following steps：
1) coal dust of 50～400 μm of the particle diameter, water content for preparing feed unit less than 2.0wt% is sent through fine coal conveyer (3)
Enter to complete the quick upgrading conversion of coal dust in coal tar extraction reactor (4), the transforming agent that fine coal conveyer (3) is passed through is water
The oxygen rich gas of steam and air or oxygen content more than the 30～90vol% of pure oxygen or oxygen content of 99.6vol% middle a kind of or
The two or more equal phase materials formed through blender mixing of person；
2) carbon containing of the gas-solid fluid-mixing produced in coal tar extraction reactor (4) at the top of coal tar extraction reactor (4)
Arrested particles carry out once solid particle entrance built-in particle circulator (5) of gained after gas-solid two-phase laminated flow, in built-in particle
Under the control of cycle rate controller (6), returned in coal tar extraction reactor (4) with the returning charge rate loop for setting, coal tar
The inorganic carbonaceous particle produced in oil extract reactor (4) is exported through its bottom ashe and enters ash collection tank (39), and preliminary gas-
Gu after separating, the high-temp solid material trapped by raw gas purifying unit containing tar and dust raw gas of gained is by its bottom
Entrance (40) is recycled back into coal tar extraction reactor (4), and separating obtained tar enters tar storage tank (13)；
3) tar storage tank (13) by tar send into crude tar oil pretreatment unit carry out purifying, purify after send into tar refinery unit
Pre-hydrotreating reaction tower (16), pre- hydrogenation products are divided by pre- hydrogenation products knockout tower (17) are entered at the top of pre-hydrotreating reaction tower (16)
Light component from rear gained enters gas phase hydrogenation reaction tower (18) by pre- hydrogenation products knockout tower (17) top exit, and pre- hydrogenation is produced
In thing knockout tower (17), separating obtained unconverted asphalitine and agent mixture flow through outlet at bottom and flow back into pre- hydrogenation
Proceed hydro-conversion in reaction tower (16), gas phase hydrogenation product is by entrance gas phase hydrogenation at the top of gas phase hydrogenation reaction tower (18)
Hydrogenation products rectifying column (20) sent into by product knockout tower (19), gas phase hydrogenation reaction product knockout tower (19) tower bottom product,
Hydrogenated product rectification tower (20) process after obtain light component, component be respectively fed to light component collecting tank (21) and heavy constituent receipts
Collection tank (22), hydrogenation products rectifying column (20) top waste gas enter tail gas purification tower (23)；
4) coal gas of raw gas purifying unit sends into gas purification unit successively by the road through oil-gas separation, dedusting, desulfurization, de-
The C1-C3 light components that the purification coal gas that ammonia is obtained after purifying is exported with gas phase hydrogenation reaction product knockout tower (19) tower top outlet (70)
4000～the 10000kJ/Nm of Lower heat value formed after converging3Fuel combination enter gas compression pump (27) boosting after enter
Gas turbine (28) is fully burnt in gas-turbine combustion chamber with the air (71) through preheating, produced by burning
800～1200 DEG C of high-temperature flue gas enter expansion work in combustion gas turbine (29), drive generator (32) to generate electricity, combustion gas turbine (29)
The middle pressure steam that the combustion gas of 400～600 DEG C discharged after middle expansion work goes successively to produce in waste heat boiler (30) enters steaming
Expansion work in vapour turbine (31), drives generator (32) to generate electricity, and the middle temperature flue gas that steam turbine (31) is discharged enters economic benefits and social benefits bromine
Change lithium refrigeration unit (33) and produce low temperature supplying cold water and middle warm water respectively, waste heat boiler (30) produce after heat exchange 80～
100℃、SO2Concentration is less than 5mg/Nm3, NOXConcentration is less than 20mg/Nm3, dust content is less than 1mg/Nm3Flue gas through chimney
(36) arrange outward, additionally, gas-fired temperature range is controlled at 800～1200 DEG C in gas turbine, can suppress to greatest extent
Thermal NO during gas-firedXGeneration.
7. clean gas according to claim 6 generate electricity, clean fuel co-production, it is characterised in that：Described coal tar
The internal thermo parameters method of oil extract reactor (4), wall pass through built-in particle circulator with the thermograde of reaction core space
(5), primary granule circulator (8), the solid particle circulating ratio under fine grained circulator (10) control are being controlled.
8. clean gas according to claim 6 generate electricity, clean fuel co-production, it is characterised in that：Described coal gas
Desulfurization can adopt wet type desulfurizing or dry desulfurization, and when using dry desulfurization, desulfurizing tower is filled with certain height for inside and exists
Possesses H at 20～50 DEG C2The catalyst layer of S adsorbing and removings activity, described catalyst is with SiO2,Al2O3,TiO2In one kind
Or composite oxides are carrier, with Fe2O3,CuO,ZnO,MnO2In one or several for active component bimetallic or
Multimetal reforming catalyst.
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| CN106479548A (en) * | 2015-08-28 | 2017-03-08 | 李宽义 | Coal base high efficiency of energy cleaning becomes more meticulous using environment-protecting clean method |
| CN105419835A (en) * | 2015-11-30 | 2016-03-23 | 华电重工股份有限公司 | Processing method of coal low-temperature pyrolysis volatile component |
| CN209508172U (en) * | 2018-08-13 | 2019-10-18 | 湖南叶林环保科技有限公司 | Organic dangerous waste pyrolysis gas purification system |
| CN109357261B (en) * | 2018-12-18 | 2019-12-17 | 上海玖矢企业管理有限公司 | Organic matter solid waste treatment equipment |
| CN113025380A (en) * | 2021-03-04 | 2021-06-25 | 华能（天津）煤气化发电有限公司 | Process flow for accurately controlling calorific value of Integrated Gasification Combined Cycle (IGCC) synthesis gas |
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