CN206112970U - Circulating fluidized bed boiler unit based on put out sediment technique futilely - Google Patents
Circulating fluidized bed boiler unit based on put out sediment technique futilely Download PDFInfo
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Abstract
The utility model relates to a circulating fluidized bed boiler unit based on put out sediment technique futilely, include fire coal bin, combustion chamber, cyclone, shaft, electrostatic precipitator and the chimney that connects gradually and put out sediment recycling treatment device futilely, put out sediment recycling treatment device futilely including putting out stove and circulating fan futilely, the upper portion of putting out the stove futilely is provided with the flue, and the flue inlet that the shaft received the hot side is connected to the flue, and put out the feed inlet of stove futilely and connect combustion chamber residue discharge channel, the last reposition of redundant personnel flue that sets up of electrostatic precipitator exhaust pass, the bottom of putting out the stove futilely is connected to the reposition of redundant personnel flue through circulating fan. The beneficial effect of its production is: arrange in the sediment afterburnt in the stove, the flue gas that adopts circulating fluidized bed boiler unit is as the recycle gas, it for dry coke quenching technology use N2 inert gas, can produce poisonous, easy detonation gas such as CO in the aspect of, this technology is safe and reliable more, puts out the sediment futilely to the high temperature of after -flame and utilizes for the second time, can show reduction unit gross coal consumption rate, simultaneously effective pollution abatement thing emission.
Description
Technical field：
This utility model is related to a kind of supporting turbine generator machine equipment of CFBB, is specifically put out using dry
Slag technique to high-efficiency recovery boiler deslagging physical sensible heat, optimization reclaim Btu utilization mode, final raising unit overall economy quality.
Background technology：
, with it in inexpensive pollution emission control, and the aspect such as low heat value coal adaptability is excellent for CFBB
Gesture, is acknowledged as in the world one of best clean coal burning technology of degree of commercialization.Most during the nearly last ten years, China is drawing
On the basis of entering 300MW unit Technology of Circulating Fluidized Bed Boiler, develop the 300MW units with independent intellectual property right, 600MW and match somebody with somebody
Subcritical, the supercritical circulating fluidized bed boiler of set.
CFBB major advantage is to use low heat value, high-ash colm strong adaptability, but because of low heat value
The As-received ash of coal is general 30%～50% higher, and bed drain purge accounts for total ash quantity up to 40%, and sensible heat accounts for coal-fired low heat valve
0.8～1.4 percentage point, deslagging temperature has high level heat up to 850 DEG C relative to environment.Investigation finds：Mainly adopt at present
With rolling-cylinder type slag-cooler and spent-bed cooler etc., as a whole, but because heat reclaim unit efficiency is low, reclaim heat energy
Level is relatively low, and this partial heat is underused, and affects very big to plant thermal efficiency.For example：The subcritical machines of Yunnan company 300MW
Group CFBB, uses local low heat value brown coal, and quantity of slag 39.4t/h is discharged under rated load, and the red slag sensible heat of high temperature is huge
Greatly, deslagging sensible heat accounts for 0.84 percentage point of coal burning caloricity.It is specifically shown in (table：1).
(table 1：) certain 300MW Subcritical Units boiler as-fired coal caloric value and deslagging sensible heat synopsis
Note：Data Source 300MW Subcritical Units logs
In order to recycle deslagging sensible heat, boiler arranges four roller slag coolers, will reclaim heat heat regenerative system
NO1、NO2Two-stage low-pressure heater, is generated electricity with squeezing increase of drawing gas.Because slag cooler heat exchange form is limited, solidifying water caloric receptivity only has
31.36%, and recovery heat energy level is relatively low, can only utilize in NO1、NO2Two-stage low-pressure heater.It is theoretical according to equivalent enthalpy drop,
The efficiency of averagely drawing gas of double-bank heater, that is, it is 11.43% to increase acting with the ratio for adding heat, finally issues additional electrical power
Only 279kW.
At present many smelters employ dry coke quenching technique, and it reduces discharging " 12 " Planning emphasis and pushes away as national energy-saving
Wide technology, is remarkably improved efficiency of energy utilization, is specifically shown in《Dry coke quenching power-saving technology specification》(YB/T 4255-2012).
Coke dry quenching boiler technological process：Coke dry quenching furnace is the important component part of dry quenching system.Noble gases N2As following
Ring gas cools down incandescent coke in coke dry quenching furnace, and the high temperature inert gas for absorbing red burnt sensible heat are removed slightly through disposable dust remover
Granule coke powder enters boiler, feeds water through feed water preheater suction, economizer, fin pipe evaporator, light pipe evaporator, once overheated
Device, secondary superheater, finally produce superheated steam；Cooled noble gases Jing secondary filters remove fine grained coke powder, then
Coke dry quenching furnace is blasted by circulating fan to continue to cool down red Jiao.
The steam that at present major part coke dry quenching boiler in the whole world is produced is mainly used to the cogeneration of heat and power that generates electricity or carry out.In the world
It is relatively advanced to represent technology with nippon, JFE, Thyssen Steele, Richard Otor's dry coke quenching, and define
Each the characteristics of.It is specifically shown in and (is shown in Table：2).
(table：2) Ukraine, Japan, German Dry Quenching Technology contrast table
Note：《Dry coke quenching power-saving technology specification》(YB/T 4255-2012).
Dry Quenching Technology is highly developed, stable equipment operation reliability, strong to different coke adaptabilities；The row of recirculating fluidized bed
Slag, is the lump coal of after-flame, and dry coke quenching coke is the lump coal of coking, and both are related to the physical indexs such as goods fluid, heat exchange, such as granularity
Distribution, proportion, specific heat etc. are basically identical, and the pervasive technique that Dry Quenching Technology can be selected completely carrys out cooling treatment deslagging, for example
The blowing out operating process of CFBB is exactly a kind of dry quenching slag process.It is right according to Dry Quenching Technology and dry quenching slag technique
The involved related parameter that has is calculated, and is specifically shown in (table：3).
(table 3：) dry coke quenching compares with dry quenching slag basic parameter
Note：Data Source in《Dry Quenching Technology》Pan Lihui etc. writes (metallurgical industry publishing house).
Have no in prior art and dry quenching slag technology is applied in Circulating Fluidized Bed Boilers equipment, it is necessary to ground
Study carefully design.
The content of the invention：
This utility model provides a kind of Circulating Fluidized Bed Boilers based on dry quenching slag technology, selects performance reliably to arrange
Slag cooler, by the physical sensible heat high efficiente callback of CFBB deslagging.
For achieving the above object, technical solution adopted in the utility model is as follows：
Circulating Fluidized Bed Boilers based on dry quenching slag technology include passing sequentially through coal bunker, the combustion of flue interconnection
Burn room, cyclone separator, vertical shaft, electric cleaner and chimney；It is characterized in that：Also include dry quenching slag cyclic processing device, it is described
Dry quenching slag cyclic processing device includes coke dry quenching furnace and circulating fan, and the top of the coke dry quenching furnace is provided with flue, the flue connection
The flue entrance of vertical shaft heating surface, the charging aperture connection combustor slagging channel of coke dry quenching furnace, shunts on electric cleaner exhaust pass
Flue, the bottom Jing circulating fans of coke dry quenching furnace are connected to the shunting flue, the partial fume Jing circulated airs of electric cleaner outlet
Machine suction coke dry quenching furnace is carried out after heat exchange, sends into vertical shaft heating surface.
In order to the high-temperature flue gas of recirculation are carried out with dedusting, the dry quenching slag cyclic processing device is also filled including one-time dedusting
Put, the one-time dedusting device is arranged on the flue between coke dry quenching furnace and vertical shaft.
In order to ensure that recirculation heat smoke temperature matches with circulation fluidized bed unit introduction point main flume temperature, once remove
The smoke deflector of angle adjustable is provided with flue and vertical shaft access point after dirt device.
Superheater, reheater, economizer and air preheater are disposed with from top to bottom in vertical shaft.
In order to ensure the normal combustion of burning indoor coal burning recirculating fluidized bed, the device also includes primary air fan and secondary wind
Machine, the primary air fan and overfire air fan are connected to respectively bottom and the lower position of combustor by pipeline, the First air,
Secondary wind flows through air preheater and absorbs fume side heat.
In order to carry out desulfuration in furnace in fired coal combustion, the combustor charging aperture is also associated with coal bunker, Limestone silo.
In order to realize that the regulation to process is controlled, also including DCS system, DCS system includes control main frame, display screen
With data sensor collection device, the DCS system respectively with coal bunker, limestone charging gear, primary air fan, overfire air fan,
Air preheater, air-introduced machine connection.
It is easy to monitoring and the safe early warning of device systems and technological process, the data sensor collection system to include being arranged on
Combustor top, Cyclone outlet, heating surface entrances at different levels, coke dry quenching furnace, one-time dedusting device, electric dust collector in vertical shaft
On fume side and soda pop side temperature or pressure sensor.
This utility model has the advantage that as follows：
In order to improve deslagging Exposure degree efficiency, while improving its energy level for reclaiming heat, the application is by phase
Close industry to make thorough investigation and study, steel industry Dry Quenching Technology is applied in Circulating Fluidized Bed Boilers, with preferably utilization
Value.
The reliable discharged slag cooling device of performance is selected, by CFBB deslagging physical sensible heat high efficiente callback, can
High-grade heat is produced using it, and with reference to Circulating Fluidized Bed Boilers therrmodynamic system feature, analyze and wait according to relevant
Effect enthalpy drop Energy saving theory, systematically optimizes concrete position etc. of the Btu utilization in boiler side or the heat regenerative system of steam turbine, real
Existing lower heat of combustion colm efficiency power generation target.
Cooling recirculating fluidized bed deslagging is processed using the pervasive technique of Dry Quenching Technology, there is provided a kind of feasible dry quenching slag
High-efficiency waste heat recovery device, and blend with existing subcritical or supercritical unit thermodynamic cycle characteristic, a kind of base can be obtained
In the Circulating Fluidized Bed Boilers deslagging Exposure degree technique of dry quenching slag technology.
Because of the after-flame in stove of the combustible in deslagging, using the flue gas of Circulating Fluidized Bed Boilers as circulating air
Body, it is relative to dry coke quenching technology utilization N2Noble gases, can produce that CO etc. is poisonous, easy exploding gas aspect, the technique is more
It is safe and reliable；The high temperature dry quenching slag of after-flame is utilized for second, unit generation coa consumption rate can be significantly reduced, while effectively reducing
Pollutant emission, the environmentally friendly income also highly significant in terms of pollutant emission is reduced.
Adopt the device can be with net increase generated output：2583kW, and adopting existing slag cooler to reclaim heat increases electricity
279kW.This utility model is 9.26 times of roller slag cooler system increment life insurance, is 5500h according to the annual hours of operation of unit；
Then increase generated energy every year：The kWh of 2583kw × 5500h=1420.65 ten thousand；Rate for incorporation into the power network presses 0.4 yuan/kwh；It is annual to increase sale of electricity
Income：Ten thousand yuan of 1420.65 ten thousand kWh × 0.4 yuan/kwh=568.26；4000 yuan/kW of static investment is built according to thermal power project；Cause
This investment is：Ten thousand yuan of 2583kW × 4000 yuan/kW=1033.2, pay off period：1033.2 ten thousand yuan/568.26 ten thousand yuan=
1.8 years, when consuming same fuel, 300MW units can increase every year the kWh of generated energy 1420.65 ten thousand.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1- coal bunkers, 2- Limestone silos, 3- combustor, 4- cyclone separator, 5- superheaters, 6- reheaters, 7- is saved
Coal device, 8- air preheaters, 9- electric cleaners, 10- air-introduced machines, 11- chimneys, 12- overfire air fans, 13- primary air fans, 14- is followed
Ring blower fan, 15- coke dry quenching furnaces, 16- disposable dust removers, the high-strength aerators of 17-, 18- slagging channels.
Specific embodiment
As shown in figure 1, the CFBB based on dry quenching slag technology of the present utility model, mainly includes fluid bed pot
Stove and dry quenching slag cyclic processing device two parts, fluidized-bed combustion boiler therein mainly by coal bunker 1, combustor 3, Limestone silo 2,
High-strength aerator 17, primary air fan 13, overfire air fan 12, cyclone separator 4, vertical shaft heating surface are (including being arranged in vertical shaft
Superheater 5, reheater 6, economizer 7), air preheater 8, electric cleaner 9, air-introduced machine 10 and chimney 11 constitute.Wherein, it is coal-fired
Storehouse 1 and Limestone silo 2 are connected with the charging aperture of combustor 3, and the outlet flue of combustor 3 connects cyclone separator 4 by flue,
The other end of cyclone separator 4 is connected to the smoke inlet on vertical shaft top by flue, while the lower end feedback outlet of cyclone separator 4
Connection combustor, air preheater 8 is arranged in vertical shaft, and vertical shaft lower end exhanst gas outlet is connected with electric cleaner 9, electric cleaner 9
The other end is connected by air-introduced machine 10 with chimney 11, while arranging air distribution plate and by air channel and height in the bottom of cyclone separator 4
Strong aerator connection.Flue gas passes sequentially through cyclone separator 4, vertical shaft heating surface, air preheater 8, electric cleaner in combustor 3
9th, discharge into chimney 11 after air-introduced machine 10.
Combustor side primary air fan 13 and overfire air fan 12 respectively by pipeline be connected to combustor 3 bottom and
Lower position, the pipeline of blower fan introduces air preheater 8, and to air heat treated is carried out.
The bottom of combustor 3 is provided with dry quenching slag cyclic processing device, is mainly made up of coke dry quenching furnace 15 and circulating fan 14,
Wherein the charging aperture of coke dry quenching furnace 15 is connected by slagging channel 18 with the slag-drip opening of combustor 3, is set on the exhaust pass of electric cleaner 9
It is equipped with shunting flue, the bottom Jing circulating fan 14 of coke dry quenching furnace 15 is connected to the shunting flue, and the middle and upper part of coke dry quenching furnace 15 is provided with
Flue, flue is connected with one-time dedusting device 16, and one-time dedusting device 16 is connected to the cigarette on vertical shaft heating surface top by flue
Road entrance, at the flue after one-time dedusting device and vertical shaft access point smoke deflector, deflector scalable angle are additionally provided with
Degree, its driving means are connected with control system, its purpose is to ensure that recirculation heat smoke temperature is drawn with circulation fluidized bed unit
Access point main flume temperature matches.
Control system adopts DCS system, coal bunker, Limestone silo, high-strength aerator, primary air fan, overfire air fan, air
The devices such as preheater, air-introduced machine are connected with control system, realize that the regulation to process is controlled.
Meanwhile, DCS system also includes control main frame, display screen and data sensor collection device, in combustor top, whirlwind
Be provided with heating surface entrances at different levels, coke dry quenching furnace, one-time dedusting device, electric dust collector in separator outlet, vertical shaft temperature,
Blast sensing element is connected with unit general control system DCS, is easy to monitoring and the safe early warning of device systems and technological process.
Operationally, first, the fire coal in coal bunker 1 is entered in combustor 3 this utility model, and fired coal combustion produces high temperature
Flue gas, flue gas carries part flying dust and enters cyclone separator 4, the flying dust point carried in flue gas and flue gas in the cyclone separator 4
From most of flying dust is sent back in combustor 3, and flue gas enters vertical shaft heating surface by flue, and passes sequentially through vertical shaft and be heated
Superheater 5 in face, reheater 6 and economizer 7 and air preheater 8, the heat transfer process in stove, boiler circuit heat absorption is produced
Raw high temperature and high pressure steam, its pushing turbine and electromotor etc..The flue gas that heat exchange is finished carries out dedusting through electric cleaner 9
Afterwards, via air-introduced machine 10, discharge into chimney 11.
And the red slag in combustor 3 after burning is admitted in coke dry quenching furnace 15 by the slagging channel 18 of slag-drip opening；And utilize
The shunting flue being arranged between electric cleaner 9 and air-introduced machine 10, by the extension low-temperature flue gas (temperature one of circulating fan 14
As at 130 DEG C) enter coke dry quenching furnace 15 in, in the furnace chamber of coke dry quenching furnace 15, low-temperature flue gas with enter red slag carry out high efficient heat exchanging, will
The red slag of high temperature in coke dry quenching furnace is cooled down rapidly, it is to avoid occur, because of red slag bonding, forming bulk and clogging.Meanwhile, low temperature cigarette
Aspiration heat becomes high-temperature flue gas, the flue-gas temperature after heat exchange at 650 DEG C～700 DEG C, because high-temperature flue gas carry lime-ash, must Jing
One-time dedusting device 16 carries out dedusting, to prevent the heating surface excessive wear of vertical shaft.The high temperature neat stress that dedusting is finished, via can
The smoke deflector of hue angle, and under DCS system control, the area close with the flue-gas temperature level of boiler is admitted in vertical shaft
Domain uniformly mixes, and after the partial fume mixes with CFBB flue gas, will flow successively through superheater 5, the and of reheater 6
The devices such as economizer 7, air preheater 8 carry out heat exchange cooling, and temperature is reduced to 130 DEG C and enters electric cleaner 9.Most of flue gas
Discharge into chimney, small part flue gas Jing circulating fans reenter coke dry quenching furnace, and circulating repetition.
The denitrification apparatus (SNCR) of CFBB, typically export, areas of higher temperature in cyclone separator 4, then
Circulating flue gas will not be impacted to it.Limestone in Limestone silo 2 then carries out desulfuration in furnace to the fire coal of combustion process.
Instance analysis：
By this Btu utilization mode, in the case of boundary conditions are constant, the deslagging physical sensible heat of recovery is main
Absorbed by boiler steam and water circuit, mechanical energy is converted into steam-turbine plant efficiency, according to related Energy saving theory, the heat recovery side
Compared with using at the low-pressure heater position of heat regenerative system, its heat to power output efficiency is remarkably improved formula.Such as the case institute in following table
Show：
(table 4：) general flue gas and nitrogen the control of volume enthalpy
Note：Data Source in《Teaching material is reviewed in national prospective design registration shared device engineer's power professional examination》
Circulating flue gas flow is adjusted：
According to (table：1) deslagging sensible heat is 7.78MJ/s, heat is reclaimed per hour and is：
7.78MJ/s × 3600s=28000MJ/h；
According to (table：4) the volume enthalpy of general flue gas is taken according to 700 DEG C, 150 DEG C；
28000MJ/h/(1051-209.085)kJ/M3=2800 × 1000kJ/h/ (1051-209.085) kJ/M3=
33257.5M3/h
According to 300MW Subcritical Units, boiler efficiency 91%, pipeline efficiency 99%, steam-turbine plant efficiency 44.59%,
Mechanical efficiency 99.5%, generating efficiency 99.8%, annual utilization hours 5500h, 0.4 yuan/kwh of rate for incorporation into the power network.
Reclaiming dry quenching slag sensible heat increases generated output：
28000MJ/h/3600 × 91% × 99% × 44.59% × 99.5% × 99.8%=3.103MW；
According to (table 2：) ton Jiao's energy consumption is chosen, 13kWh/t, quenching slag drying device is exerted oneself 40t/h；
The equipment total power consumption such as supporting circulating fan：13kWh/t × 40t/h=520kW；
Therefore, net generated output increases：3103-520kw=2583kW.
In order to realize the maximum return of " Circulating Fluidized Bed Boilers based on dry quenching slag technology ", relevant issues are illustrated such as
Under：
The technology is applied to the CFBB of supercritical unit, and the unit efficiency of such as supercritical 600MW units reaches
45.78%, more subcritical 300MW units are high 1.19 percentage points, and income also improves 1.19 percentage points.
Above-mentioned calculating case is that, according to Yunnan low heat value brown coal, As-received ash accounts for 30%, low heat valve 11.1MJ/
kg；If being up to 40%～50% according to Some Domestic colm or ash content in refuse, its income will again improve 0.56 percentage point.
Claims (8)
1. a kind of Circulating Fluidized Bed Boilers based on dry quenching slag technology, including the fire coal for passing sequentially through flue interconnection
Storehouse, combustor, cyclone separator, vertical shaft, electric cleaner and chimney；It is characterized in that：Also include dry quenching slag cyclic processing device,
The dry quenching slag cyclic processing device includes coke dry quenching furnace and circulating fan, and the top of the coke dry quenching furnace is provided with flue, the flue
The flue entrance of connection vertical shaft heating surface, the charging aperture connection combustor slagging channel of coke dry quenching furnace, on electric cleaner exhaust pass
Shunting flue is set, and the bottom Jing circulating fans of coke dry quenching furnace are connected to the shunting flue, the partial fume of electric cleaner outlet
Jing after circulating fan suction coke dry quenching furnace carries out heat exchange, vertical shaft heating surface is sent into.
2. Circulating Fluidized Bed Boilers based on dry quenching slag technology according to claim 1, it is characterised in that：It is described dry
Putting out slag cyclic processing device also includes one-time dedusting device, and the one-time dedusting device is arranged on the flue between coke dry quenching furnace and vertical shaft
On.
3. Circulating Fluidized Bed Boilers based on dry quenching slag technology according to claim 2, it is characterised in that：Described
The smoke deflector of angle adjustable is provided with flue and vertical shaft access point after one-time dedusting device.
4. Circulating Fluidized Bed Boilers based on dry quenching slag technology according to claim 2, it is characterised in that：It is described perpendicular
Superheater, reheater, economizer and air preheater are disposed with from top to bottom in well.
5. according to the arbitrary described Circulating Fluidized Bed Boilers based on dry quenching slag technology of claim 1-4, it is characterised in that：
Also include primary air fan and overfire air fan, the primary air fan and overfire air fan are connected to respectively the bottom of combustor by air channel
With combustor lower position, the First air, secondary wind flow through air preheater and absorb flue gas heat heating.
6. Circulating Fluidized Bed Boilers based on dry quenching slag technology according to claim 5, it is characterised in that：The combustion
Burn room charging aperture and be also associated with coal bunker, Limestone silo.
7. Circulating Fluidized Bed Boilers based on dry quenching slag technology according to claim 1, it is characterised in that：Also include
DCS system, DCS system include control main frame, display screen and data sensor collection device, the DCS system control end respectively with
The connection of coal bunker, limestone charging gear, primary air fan, overfire air fan, air preheater and air-introduced machine.
8. Circulating Fluidized Bed Boilers based on dry quenching slag technology according to claim 7, it is characterised in that：The number
Include being arranged on combustor top, Cyclone outlet, heating surface entrances at different levels in vertical shaft, dry put out according to sensing collection system
Fume side and soda pop side temperature or pressure sensor on stove, one-time dedusting device, electric dust collector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621067059.3U CN206112970U (en) | 2016-09-20 | 2016-09-20 | Circulating fluidized bed boiler unit based on put out sediment technique futilely |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621067059.3U CN206112970U (en) | 2016-09-20 | 2016-09-20 | Circulating fluidized bed boiler unit based on put out sediment technique futilely |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013922A (en) * | 2017-05-26 | 2017-08-04 | 北京石油化工学院 | The harmlessness disposing technique method and apparatus of electrolytic aluminium solid waste |
| CN108273373A (en) * | 2018-01-23 | 2018-07-13 | 宁波市鄞州区达之丰工业产品设计有限公司 | A kind of metallurgy pollution emission reduction equipment |
| CN110566943A (en) * | 2019-09-23 | 2019-12-13 | 华北电力大学 | Low NO for CFB boiler under deep peak shavingxHigh-temperature flue gas recirculation system |
-
2016
- 2016-09-20 CN CN201621067059.3U patent/CN206112970U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013922A (en) * | 2017-05-26 | 2017-08-04 | 北京石油化工学院 | The harmlessness disposing technique method and apparatus of electrolytic aluminium solid waste |
| CN108273373A (en) * | 2018-01-23 | 2018-07-13 | 宁波市鄞州区达之丰工业产品设计有限公司 | A kind of metallurgy pollution emission reduction equipment |
| CN110566943A (en) * | 2019-09-23 | 2019-12-13 | 华北电力大学 | Low NO for CFB boiler under deep peak shavingxHigh-temperature flue gas recirculation system |
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Address after: 210046 Qixia, Jiangsu Province, Wonderland Road, No. 10, Co-patentee after: Guodian Nanjing electric power test & Research Co., Ltd. Patentee after: National Electric Science and Technology Research Institute Co., Ltd. Address before: 210046 Qixia, Jiangsu Province, Wonderland Road, No. 10, Co-patentee before: Nanjing Power Equipment Quality & Performance Test Center Patentee before: Guodian Science and Technology Research Institute |
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