WO2015136678A1 - Système de production d'électricité à l'aide de charbon de faible qualité - Google Patents

Système de production d'électricité à l'aide de charbon de faible qualité Download PDF

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Publication number
WO2015136678A1
WO2015136678A1 PCT/JP2014/056782 JP2014056782W WO2015136678A1 WO 2015136678 A1 WO2015136678 A1 WO 2015136678A1 JP 2014056782 W JP2014056782 W JP 2014056782W WO 2015136678 A1 WO2015136678 A1 WO 2015136678A1
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WO
WIPO (PCT)
Prior art keywords
quality coal
low quality
facility
power generation
reforming
Prior art date
Application number
PCT/JP2014/056782
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English (en)
Japanese (ja)
Inventor
隆仁 米川
本城　新太郎
洲崎　誠
Original Assignee
三菱重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to PCT/JP2014/056782 priority Critical patent/WO2015136678A1/fr
Priority to CA2941843A priority patent/CA2941843C/fr
Priority to CN201480076740.1A priority patent/CN106062482A/zh
Priority to DE112014006458.0T priority patent/DE112014006458B4/de
Priority to JP2016507214A priority patent/JP6278576B2/ja
Priority to AU2014386062A priority patent/AU2014386062A1/en
Publication of WO2015136678A1 publication Critical patent/WO2015136678A1/fr
Priority to AU2018202315A priority patent/AU2018202315B2/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • F23K1/04—Heating fuel prior to delivery to combustion apparatus
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
    • C10L2290/148—Injection, e.g. in a reactor or a fuel stream during fuel production of steam
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

Definitions

  • the present invention relates to a power generation system using low quality coal such as subbituminous coal and lignite.
  • low quality coals such as subbituminous coal and lignite generally have a lot of moisture, a low carbonization degree, and a low calorific value during combustion.
  • power generation facilities power generation plants
  • the power generation efficiency is lowered and the CO 2 emission amount per unit power generation amount is greatly increased.
  • low quality coal that has been dried and reformed in advance is supplied to the boiler, or in the power generation facility, a drying process is provided before combustion, and reforming that increases the calorific value is performed.
  • Is used as fuel for power generation equipment see, for example, Patent Document 1).
  • CO 2 recovery facility for recovering and removing CO 2 from exhaust gas discharged from a boiler or the like.
  • the CO 2 recovery facility for example, the CO 2 absorption liquid amine into contact with the exhaust gas, an absorption tower for absorbing the CO 2 in the flue gas to the CO 2 absorbing solution, CO 2 that has absorbed CO 2 in the absorption tower absorbing solution by dissociating the CO 2 is recovered by heating with steam, and a regenerator to regenerate the CO 2 absorbing solution in the amine.
  • a power generation system using low-quality coal is a power generation system that generates power using low-quality coal as fuel for a boiler, and the low-quality coal is heated to be converted to high-quality coal.
  • Generated by reforming the low quality coal at the low quality coal reforming facility while utilizing the steam generated by reforming the low quality coal at the low quality coal reforming facility A CO 2 recovery facility that recovers CO 2 from the exhaust gas to be generated, and a power generation facility that generates power using the high quality coal obtained by reforming the low quality coal in the low quality coal reforming facility.
  • the power generation system using the low-quality coal may include a CO 2 transport facility for feeding CO 2 recovered by the CO 2 recovery facility to an oil production plant.
  • the low quality coal reforming facility may be provided in the vicinity of a coal mine that produces the low quality coal.
  • the CO 2 transport facility may be a pipeline connecting the low quality coal reforming facility and the CO 2 recovery facility.
  • the calorific value can be improved by reforming the low quality coal with the low quality coal reforming equipment provided separately from the power generation equipment, and as a result, the power generation system of the coal thermal power plant. It becomes possible to improve the power generation efficiency.
  • the amount of exhaust gas when used as boiler fuel can be reduced by treating the exhaust gas discharged by reforming the low quality coal in the low quality coal reforming facility by the CO 2 recovery facility provided separately from the power generation facility.
  • the CO 2 recovery facility provided separately from the power generation facility.
  • environmental pollutants such as CO 2 , SO X , NO X , and Hg.
  • the power generation system A using the low quality coal of the present embodiment is a low quality coal reforming facility for reforming low quality coal (low quality coal) 2 such as subbituminous coal or lignite produced in the mine 1. 3, power generation facility 5 that generates power using high quality coal (high quality coal) 4 obtained by reforming low quality coal 2 in low quality coal reforming facility 3, and low quality coal reforming facility 3 It comprises a CO 2 recovery facility 6 for recovering CO 2, the.
  • the low quality coal reforming facility 3 is a facility that heat-treats the low quality coal 2 and reforms it into the high quality coal 4.
  • the low quality coal 2 is dried by heating the low quality coal 2 to evaporate water or performing dry distillation. / Equipped with a carbonization device.
  • the power generation facility 5 is a coal thermal power generation facility including a boiler that generates steam using coal as fuel and a turbine that is driven by the steam generated in the boiler.
  • the power generation equipment 5 has a high-pressure turbine driven by high-pressure and high-temperature steam generated in a boiler, for example, and the high-pressure turbine exhaust is superheated by a boiler resuperheater, and the re-superheated intermediate-pressure steam The pressure turbine is driven, and the exhaust gas is used to drive the low pressure turbine to generate power.
  • the power generation equipment 5 includes exhaust gas treatment equipment such as a condenser, a desulfurizer, and a chimney.
  • the CO 2 recovery facility 6 receives the exhaust gas 7 and the water vapor 8 generated by heating the low quality coal 2 in the low quality coal reforming facility 3, and makes the CO 2 from the exhaust gas 7 come into contact with the exhaust gas 7 by bringing the exhaust gas 7 into contact with the CO 2 absorbent. and the absorption tower to remove by absorbing, accept the CO 2 absorbent that has absorbed CO 2 in the absorption tower, and a regeneration tower for separating the CO 2 absorbed into the CO 2 absorbing liquid collecting Yes.
  • the absorption tower is provided with an absorption liquid scrubber for spraying the CO 2 absorption liquid in a mist form.
  • the absorption tower brings the CO 2 absorbent sprayed from the absorbent scrubber into contact with the exhaust gas 7.
  • the exhaust gas 7 is introduced into the absorption tower from the low quality coal reforming facility 3 through the communication duct, and flows from the lower side to the upper side of the absorption tower. Accordingly, CO 2 in the exhaust gas 7 is absorbed dissolved in the CO 2 absorbing solution, exhaust gas after treatment which CO 2 has been removed is discharged to the outside from the top of the absorption tower. Moreover, CO 2 absorbent having absorbed CO 2 is accumulated in the lower portion of the absorption tower.
  • the absorption tower is provided with a scrubber or demister for spraying cooling water in a mist form above the internal absorption liquid scrubber, and gaseous substances and particles in the exhaust gas 7 not absorbed by the CO 2 absorption liquid. It is desirable that the particulate matter be captured and removed with cooling water.
  • an amine-based absorbing liquid for example, an amine-based absorbing liquid can be adopted.
  • alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, methyldiethanolamine, diisopropanolamine, and diglycolamine can be employed as the CO 2 absorbent.
  • hindered amines can be employed. Each of these single aqueous solutions or a mixed aqueous solution of two or more of these can be used as the CO 2 absorbing solution.
  • Regenerator separating and recovering CO 2 from the CO 2 absorbent having absorbed CO 2 and the like in the absorption tower.
  • An absorption liquid feed pipe for introducing a CO 2 absorption liquid from the absorption tower is connected to the upper side of the regeneration tower. Then, by driving the liquid feed pump of the absorbent liquid feed pipe, the CO 2 absorbent accumulated in the lower part of the absorption tower is sprayed and supplied to the inside of the regeneration tower from the upper side. Also, is supplied high temperature steam from the lower side of the regenerator, by spraying the CO 2 absorbing solution is heated, CO 2 is gasified dissociate from the CO 2 absorbing solution. And the gasified CO 2 is led out from the upper part of the regeneration tower. In addition, the derived CO 2 is cooled, compressed by a compressor, and recovered as compressed CO 2 .
  • the CO 2 absorption liquid from which CO 2 is dissociated and removed in this manner is accumulated in the lower part of the regeneration tower, drives a return pump provided in the absorption liquid supply pipe, and is further cooled by a cooler to be absorbed by the absorption tower.
  • the CO 2 absorbing liquid that has absorbed CO 2 and the like from the absorption tower is sent to the regeneration tower through the absorbing liquid feed pipe, and the CO 2 absorbing liquid in which the CO 2 is recovered in the regeneration tower is converted into the regeneration tower. Then, it is returned to the absorption tower again through the absorption liquid supply pipe, and CO 2 is recovered by circulating the CO 2 absorption liquid between the absorption tower and the regeneration tower.
  • the low quality coal reforming facility 3 treats the low quality coal 2 having a calorific value of 8000 Btu / lb at a rate of 308 ton / h, thereby treating the high quality coal 4 having a calorific value of 11340 Btu / lb to 178 tton / h. Produced in proportion. Thereby, when using the high quality coal 4 as the fuel for the boiler of the coal-fired power generation facility 5, it becomes possible to obtain a high calorific value with a small amount, and it has been confirmed that the power generation efficiency is increased by 2%.
  • the CO 2 emission when using the low quality coal 2 is 9703 tpd. , 9246 tpd of CO 2 emissions.
  • the exhaust gas 7 discharged from the low quality coal upgrading facility 3 is treated with CO 2 recovery facility 6 configured as described above, it is possible to recover CO 2 in the exhaust gas 7 at 90% recovery, 2500Tpd Of CO 2 is recovered.
  • the total CO 2 emission ratio is changed from 940 ton / GWh to 881 ton / GWh, and can be reduced by about 6%. Was confirmed.
  • this oil (crude oil) enhanced recovery technology includes water flooding method for injecting water, a method for injecting natural gas or CO 2 , a thermal attack method, and a chemical method. .
  • the low quality coal 2 produced in the coal mine 1 can be efficiently (early) reformed with the low quality coal reforming facility 3 to produce the high quality coal 4, and the low quality coal reforming facility.
  • the exhaust gas 7 generated by reforming the low quality coal 2 can be processed efficiently (early) by the CO 2 recovery facility 6.
  • CO 2 transport facility such as a pipeline for transporting CO 2 recovered by the CO 2 recovery facility 6 to the oil production plant
  • the compressed CO 2 recovered by the CO 2 recovery facility 6 is supplied to the oil production plant. supplied, it can be used as a CO 2 for EOR.
  • CO 2 recovered by the CO 2 recovery facility 6 is released to the atmosphere, in order to prevent a cause of global warming, it may be stored in the deep underground.
  • the calorific value can be improved by reforming the low quality coal 2, and consequently the power generation efficiency of the coal thermal power plant 5 can be improved. It becomes possible. Moreover, although it is necessary to grind
  • reforming low quality coal 2 makes it possible to reduce the amount of exhaust gas when used as boiler fuel, and discharge of environmental pollutants such as CO 2 , SO X , NO X , and Hg. The amount can be reduced. As a result, it is possible to reduce the cost required for measures to prevent discharge of environmental pollutants and the operating cost of the discharge prevention equipment.
  • the CO 2 recovery facility 6 provided separately from the power generation facility 5, it becomes possible to reduce the CO 2 emission.
  • the recovered CO 2 can be used for EOR, for example.
  • the amount of exhaust gas can be reduced when the low quality coal 2 is reformed in the low quality coal reforming facility 3, so that the existing modification is also possible. It can be made smaller, and the equipment cost can be greatly reduced.
  • the calorific value can be improved by reforming the low quality coal with the low quality coal reforming equipment provided separately from the power generation equipment, and as a result, the power generation system of the coal thermal power plant. It becomes possible to improve the power generation efficiency.
  • the amount of exhaust gas when used as boiler fuel can be reduced by treating the exhaust gas discharged by reforming the low quality coal in the low quality coal reforming facility by the CO 2 recovery facility provided separately from the power generation facility.
  • it is possible to reduce emissions of environmental pollutants such as CO 2 , SO X , NO X , and Hg.
  • environmental pollutants such as CO 2 , SO X , NO X , and Hg.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention concerne un système de production d'électricité (A) à l'aide de charbon de faible qualité, comportant : une installation de valorisation de charbon de faible qualité (3) destinée à chauffer et à valoriser le charbon de faible qualité (2) en charbon de haute qualité (4) ; une installation de capture de CO2 (6) pour récupérer le CO2 d'un gaz d'évacuation (7) généré par la valorisation du charbon de faible qualité (2) dans l'installation de valorisation de charbon de faible qualité (3), tout en utilisant de la vapeur (8) générée par la valorisation du charbon de faible qualité (2) dans l'installation de valorisation de charbon de faible qualité (3) ; et une centrale électrique (5) destinée à générer de l'électricité en utilisant, comme carburant, le charbon de haute qualité (4) obtenu par la valorisation du charbon de faible qualité (2) dans l'installation de valorisation de charbon de faible qualité (3).
PCT/JP2014/056782 2014-03-13 2014-03-13 Système de production d'électricité à l'aide de charbon de faible qualité WO2015136678A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/JP2014/056782 WO2015136678A1 (fr) 2014-03-13 2014-03-13 Système de production d'électricité à l'aide de charbon de faible qualité
CA2941843A CA2941843C (fr) 2014-03-13 2014-03-13 Systeme de production d'electricite a l'aide de charbon de faible qualite
CN201480076740.1A CN106062482A (zh) 2014-03-13 2014-03-13 使用低质煤的发电系统
DE112014006458.0T DE112014006458B4 (de) 2014-03-13 2014-03-13 Minderwertige Kohle nutzendes Energieerzeugungssystem
JP2016507214A JP6278576B2 (ja) 2014-03-13 2014-03-13 低質炭を用いた発電システム
AU2014386062A AU2014386062A1 (en) 2014-03-13 2014-03-13 Power generating system using low quality coal
AU2018202315A AU2018202315B2 (en) 2014-03-13 2018-04-03 Power generating system using low quality coal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/056782 WO2015136678A1 (fr) 2014-03-13 2014-03-13 Système de production d'électricité à l'aide de charbon de faible qualité

Publications (1)

Publication Number Publication Date
WO2015136678A1 true WO2015136678A1 (fr) 2015-09-17

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PCT/JP2014/056782 WO2015136678A1 (fr) 2014-03-13 2014-03-13 Système de production d'électricité à l'aide de charbon de faible qualité

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JP (1) JP6278576B2 (fr)
CN (1) CN106062482A (fr)
AU (2) AU2014386062A1 (fr)
CA (1) CA2941843C (fr)
DE (1) DE112014006458B4 (fr)
WO (1) WO2015136678A1 (fr)

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US20150068189A1 (en) * 2013-09-11 2015-03-12 Mitsubishi Hitachi Power Systems, Ltd. Mercury removal system, gasification system, gasification combined power generation system and mercury removal method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US9540577B2 (en) * 2013-09-11 2017-01-10 Mitsubishi Hitachi Power Systems, Ltd. Mercury removal system, gasification system, gasification combined power generation system and mercury removal method

Also Published As

Publication number Publication date
CA2941843A1 (fr) 2015-09-17
DE112014006458T5 (de) 2016-11-24
JPWO2015136678A1 (ja) 2017-04-06
CA2941843C (fr) 2018-10-02
DE112014006458B4 (de) 2019-05-16
AU2018202315B2 (en) 2019-11-14
AU2018202315A1 (en) 2018-04-26
JP6278576B2 (ja) 2018-02-14
CN106062482A (zh) 2016-10-26
AU2014386062A1 (en) 2016-09-22

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