CN101144396A - Double-fuel combustion-supporting type gas-steam combined cycle system - Google Patents
Double-fuel combustion-supporting type gas-steam combined cycle system Download PDFInfo
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- CN101144396A CN101144396A CN 200610062631 CN200610062631A CN101144396A CN 101144396 A CN101144396 A CN 101144396A CN 200610062631 CN200610062631 CN 200610062631 CN 200610062631 A CN200610062631 A CN 200610062631A CN 101144396 A CN101144396 A CN 101144396A
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- fluidized bed
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
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Abstract
The invention relates to a dual fuel combustion-supporting type gas-steam combined cycle system, and belongs to the energy comprehensive utilization technical field. The invention is characterized in that the invention comprises a gas turbine power generating system, a steam turbine power generating system and a circulating fluidized bed boiler; the exhaust tube of the gas turbine of the gas turbine power generating system is communicated with the secondary air inlet tube of the circulating fluidized bed boiler through an exhaust pipeline, the circulating fluidized bed boiler is connected with the steam turbine of the steam turbine power generating system through a steam pipeline, and the steam turbine of the steam turbine power generating system is connected into the economizer of the circulating fluidized bed boiler through a condenser and a feed water pump; a lean fuel supply pipeline is divided into two branch lines, one branch line is led to the combustion engine fuel spraying nozzle of the gas turbine power generating system, and the other branch line is led to the burner of the circulating fluidized bed boiler; an inferior coal-related supply pipeline is accessed to the burner of the circulating fluidized bed boiler. The invention uses the wastes as raw materials to generate electric energy and steam, and thereby primary resource waste and environmental pollution are eliminated, the invention has no secondary pollution, as well as the environment is protected.
Description
Technical field:
The present invention relates to a kind of double fuel combustion-supporting type combustion gas-steam combined cycle system, it belongs to the comprehensive utilization of energy technical field.
Technical background:
Existing gas turbine generating system and steam turbine power generating originally all were power generation systems independently, described gas turbine generating system utilization be clean fuel; Described steam turbine power generating utilization be to add hot water through coal burning, produces super pressure-high temperature steam and promote steam turbine, thereby realize the purpose of generating, so steam turbine power generating needs a large amount of coal.Existing coking industry produces a large amount of " waste gas " and " refuse " in process of coking.Coal for coking is from the colliery.Produce a large amount of gangues in the coal production process, its amount accounts for 1/4th of raw coal output.Simultaneously, gangue takies a large amount of soils, worsens soil, and very easily causes debris flow, and the spontaneous combustion of gangue causes very big pollution to atmosphere.Raw coal must produce many gangues and coal slime through the coal washing operation before charing.As not utilizing, cause the wasting of resources and environmental pollution.In addition, in process of coking, produce a large amount of coke-stove gas.According to statistics, one ton of coke of every production, but producing coal gas 380-430 cubic meter, wherein half is combustion-supporting as melting down, second half, as not utilizing, have to point " day lamp ", enter in the atmosphere.Coke-stove gas is commonly called as " raw coke oven gas " before being untreated, contain a large amount of inflammable gass, and its calorific value is about half of rock gas, is valuable energy resources.Simultaneously, contain the chemical composition of a large amount of preciousnesses in " raw coke oven gas ",, wasted resource, polluted environment as not recycling.
Summary of the invention:
The object of the present invention is to provide a kind of coke-stove gas that produces in the coking system and coal slime, gangue of can utilizing as the production of energy raw material, can realize the double fuel combustion-supporting type combustion gas-steam combined cycle system of environmental protection and waste utilization.
The object of the present invention is achieved like this:
A kind of double fuel combustion-supporting type combustion gas-steam combined cycle system is characterized in that it comprises gas turbine generating system, steam turbine power generating and a circulating fluidized bed boiler; The combustion turbine exhaustion of described gas turbine generating system communicates with the secondary wind inleting tube of circulating fluidized bed boiler by exhaust duct, described circulating fluidized bed boiler connects the steam turbine of described steam turbine power generating by steam line, and the steam turbine of described steam turbine power generating connects into the economizer of circulating fluidized bed boiler by condenser and feed water pump; Described clean fuel supply pipeline is divided into two branch roads, and a branch road leads to the combustion machine fuel nozzle of gas turbine generating system, and another branch road leads to the burner of circulating fluidized bed boiler; Described low grade coal class A fuel A supply pipeline leads to the burner of circulating fluidized bed boiler.
Described circulating fluidized bed boiler is the circulating fluidized bed boiler that has auxiliary wind gas fan and auxiliary wind preheater.
Described steam turbine is the condensing type steam turbine that draws gas.
The present invention has made full use of and has produced coal and utilize the scrap feed material that produces in the process of coal production coke; with the raw material of originally discarded waste gas and wastes as new production of energy; produce electric energy and available steam; and a first resource waste and an environmental pollution had both been eliminated in that system is in service; there is not the discharging of secondary waste gas and wastes again; no secondary resource waste, no secondary environmental pollution has effectively been protected environment.
Description of drawings:
Fig. 1 is that system of the present invention constitutes schematic representation
Fig. 2 is that application example of the present invention system constitutes schematic representation
Embodiment:
Be embodiments of the invention with accompanying drawing 1,2 below, the present invention will be further elaborated.
In the present embodiment, it comprises gas turbine generating system, steam turbine power generating and a circulating fluidized bed boiler 7; Wherein gas turbine generating system, steam generating system and circulating fluidized bed boiler are prior art.Described gas turbine generating system comprises by combustion machine gas compressor 1, combustion machine firing chamber 2, the gas turbine 15 that combustion machine turbine 3 is formed; With fuel engine power generation machine 4; Steam generating system comprises circulating fluidized bed boiler 7, steam turbine 13, steam turbine generator 14.The subsidiary engine of native system is formed and is comprised combustion machine fuel nozzle 5, double fuel burning in circulating fluid bed boiler device 6, boiler secondary air preheater 8, boiler induced-draft fan 9, boiler secondary air gas fan 10, condenser 12, feed water pump 11 and economizer 71.
The combustion machine exhaust of described fuel gas generation system communicates by the secondary air intake pipe of exhaust duct with circulating fluidized bed boiler 7, described circulating fluidized bed boiler 7 connects the steam turbine 13 of described steam turbine power generating by steam line, and the steam turbine 13 of described steam turbine power generating connects into the economizer of circulating fluidized bed boiler 7 by condenser 12 and feed water pump 11; Described purified gas supply pipeline is divided into two branch roads, and a branch road leads to the combustion machine fuel nozzle 5 of gas turbine generating system, and another branch road leads to the burner 6 of circulating fluidized bed boiler 7; Described gangue and coal slime are led to the burner 6 of circulating fluidized bed boiler 7 by supply pipeline after coal pulverizer is pulverized.Described circulating fluidized bed boiler 7 is for having the circulating fluidized bed boiler of auxiliary wind gas fan 10 and auxiliary wind preheater 8.
Workflow of the present invention and principle explanation:
Double fuel of the present invention is meant high-quality clean fuel such as the rock gas that is applicable to the high efficiency gas turbine power generator group, coke-stove gas of handling or fuel oil---fuel 2, with the lower calorific value low grade fuel such as the gangue that are applicable to circulating fluidized bed boiler, coal slime---fuel 1.Described combustion-supporting type combustion gas-Steam Combined Cycle technology is meant that the exhaust of combustion machine 15 all enters circulating fluidized bed boiler 7 and participates in burning, in boiler, further improve fuel gas temperature, produce high-temperature high-pressure overheat steam together with the boiler high temperature flue gas, drive 13,14 generatings of steam turbine generator set.
" combustion-supporting type " of the present invention is meant the temperature height with gas turbine 15, and the exhaust of oxygen content about 15% all enters circulating fluidized bed boiler 7, as the air-supply of boiler.In order not increase by 15 exhaust resistances of combustion machine, the exhaust of this gas turbine 15 should be as the auxiliary wind of sending into circulating fluidized bed boiler 7.
Easy in order to guarantee the circulating fluidized bed boiler starting ignition, and under any coke-stove gas condition more than needed, shut down for some reason as the fuel engine power generation unit, coke-stove gas production is more than needed etc., not outwards discharging, and the burner of circulating fluidized bed boiler should be the double fuel type.That is, this burner can also use another kind of fuel such as coke-stove gas or rock gas etc. simultaneously except using low grade fuel such as gangue and coal slime.
When normal operation, gas turbine, circulating fluidized bed boiler and steam turbine cooperation, the double fuel combustion-supporting type combustion gas-Steam Combined Cycle of formation novel concept.Device security when guaranteeing abnormal running and satisfy the dispatching of power netwoks requirement, present technique requires to keep the second blower 10 of circulating fluidized bed boiler, preheater 8.But circulating fluidized bed boiler 7-steam turbine 13 wherein of the present invention and generator set 14 isolated operations.
The discharging of the sulfur dioxide when using low calorific value coal spoil and coal slime in order to reduce can add desulfurizing agent in proportion according to concrete production requirement in recirculating fluidized bed.The technology that adds desulfurizing agent is a prior art.
Set forth practical application situation of the present invention below in conjunction with accompanying drawing 2.
The present invention is applied in the coking industry combination system, and this system comprises colliery 17, coking plant 18, raw coke oven gas house steward 19, gas purification and chemical products recycle bin 20, energy source station 21, cooling machine set 22, Building Materials Factory 23, gangue stockyard 24 and desulfurizing agent distributor 25.Colliery 17 provides coking coal for several coking plants 18 in the zonule.Producing a large amount of gangues simultaneously discards in gangue stockyard 24.Coking plant produces gangue and coal slime when carrying out coal blending and coal washing operation.When producing coke, coking coal is sent into coke furnace.Acute variation takes place in coking coal under the condition of secluding air high temperature heating, generate the coke of solid and the escaping gas that cracking goes out, and the gas that is volatilized is commonly called as " raw coke oven gas ".The present invention enters the recovery house steward 19 who collects several coking plant coke-stove gas with " raw coke oven gas ", and in purification and chemical products recycle bin 20, utilizes existing technology, obtains purified gas and number of chemical product.Described energy source station 21 be purified gas that recycle bin 20 is provided and gangue stockyard, colliery 24 provide gangue and coking plant coal washing process in the gangue and the coal slime that produce realize transformation of energy as the described double fuel of present technique, produce electric energy, the place of heat energy and cold energy.Purified gas uses for gas turbine 15, sends electric energy.Gangue and coal slime use for circulating fluidized bed boiler 7.In described double fuel combustion-supporting type combustion gas-Steam Combined Cycle, the exhaust of gas turbine enters circulating fluidized bed boiler 7 as auxiliary wind.What enter circulating fluidized bed boiler has fuel 2 and desulfurizing agent 25 in addition; Fuel 2 is fuel engine power generation unit usefulness not when not working, or unspent coke-stove gas more than needed during work.The high temperature and high pressure steam that circulating fluidized bed boiler 7 produces drives 13,14 generatings of steam turbine-generator set.The flue gas of circulating fluidized bed boiler 7 enters atmosphere behind desulfurization and dedusting.Steam turbine 13 is the condensing type that draws gas, and the low-pressure low-temperature steam of extraction satisfies the process requirements of coke oven gas purification and chemical products recycle bin 20 respectively and is the process requirements of the Building Materials Factory 23 of raw material with pulverized fuel ash and lime-ash.Externally heat supply and utilize cooling machine set 22 of steam more than needed, with refrigeration heat, external cooling.Building Materials Factory 23 is a raw material with pulverized fuel ash and lime-ash, and the steam that utilizes energy source station 21 to provide can be produced and not have the unburned structural material of soil.
As mentioned above, above-mentionedly utilize system of the present invention with coking chemistry industry, power industry, industry of combustion machine and building materials industry have combined, and coking industry and cold, heat and electricity triple supply (product) are combined, and have realized no waste gas and wastes discharging, the No Assets waste, non-environmental-pollution, and have energy-conservation, the effect of environmental protection.
Claims (3)
1. a double-fuel combustion-supporting type gas-steam combined cycle system is characterized in that it comprises gas turbine generating system, steam turbine power generating and a circulating fluidized bed boiler (7); The gas turbine of described gas turbine generating system (15) exhaust communicates by the secondary wind inleting tube of exhaust duct with circulating fluidized bed boiler (7), described circulating fluidized bed boiler (7) connects the steam turbine (13) of described steam turbine power generating by steam line, and the steam turbine of described steam turbine power generating (13) connects into the economizer (71) of circulating fluidized bed boiler (7) by condenser (12) and feed water pump (11); Described clean fuel supply pipeline is divided into two branch roads, and a branch road leads to the combustion machine fuel nozzle (5) of gas turbine generating system, and another branch road leads to the burner (6) of circulating fluidized bed boiler (7); Described low grade coal class A fuel A supply pipeline leads to the burner (6) of circulating fluidized bed boiler (7).
2. the double-fuel combustion-supporting type gas-steam combined cycle system described in claim 1 is characterized in that described circulating fluidized bed boiler (7) is for having the circulating fluidized bed boiler of auxiliary wind gas fan (10) and auxiliary wind preheater (8).
3. the burner of the circulating fluidized bed boiler described in claim 1 (7) is the two-phase dual fuel burner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610062631 CN101144396A (en) | 2006-09-15 | 2006-09-15 | Double-fuel combustion-supporting type gas-steam combined cycle system |
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| CN 200610062631 CN101144396A (en) | 2006-09-15 | 2006-09-15 | Double-fuel combustion-supporting type gas-steam combined cycle system |
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| CN101144396A true CN101144396A (en) | 2008-03-19 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257350A (en) * | 2015-09-21 | 2016-01-20 | 华北电力大学 | Low-calorific-value coal steam-hot air combined cycle power generation system |
| CN105705865A (en) * | 2013-12-25 | 2016-06-22 | 三菱重工业株式会社 | Exhaust duct and boiler |
| WO2022141610A1 (en) * | 2021-01-03 | 2022-07-07 | 李华玉 | Dual-fuel combined circulating steam power device |
| WO2022141611A1 (en) * | 2021-01-03 | 2022-07-07 | 李华玉 | Dual-fuel combined cycle steam power device |
| WO2022148329A1 (en) * | 2021-01-11 | 2022-07-14 | 李华玉 | Dual-fuel gas-steam combined cycle power equipment |
| WO2022152007A1 (en) * | 2021-01-17 | 2022-07-21 | 李华玉 | Dual-fuel combined circulating power apparatus |
| WO2022156523A1 (en) * | 2021-01-25 | 2022-07-28 | 李华玉 | Dual-fuel gas-steam combined cycle power device |
| WO2022161112A1 (en) * | 2021-01-27 | 2022-08-04 | 李华玉 | Dual-fuel combined cycle steam power device |
| WO2022199199A1 (en) * | 2021-03-22 | 2022-09-29 | 李华玉 | Dual-fuel combined cycle power apparatus |
| WO2022206087A1 (en) * | 2021-04-01 | 2022-10-06 | 李华玉 | Dual-fuel combined-cycle power device |
| WO2022206085A1 (en) * | 2021-03-29 | 2022-10-06 | 李华玉 | Dual-fuel combined cycle power device |
| WO2022213688A1 (en) * | 2021-04-06 | 2022-10-13 | 李华玉 | Hydrogen fuel-low-grade fuel combined cycle power device |
-
2006
- 2006-09-15 CN CN 200610062631 patent/CN101144396A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105705865A (en) * | 2013-12-25 | 2016-06-22 | 三菱重工业株式会社 | Exhaust duct and boiler |
| CN105705865B (en) * | 2013-12-25 | 2017-09-22 | 三菱重工业株式会社 | Exhaust manifolds and boiler |
| CN105257350A (en) * | 2015-09-21 | 2016-01-20 | 华北电力大学 | Low-calorific-value coal steam-hot air combined cycle power generation system |
| WO2022141610A1 (en) * | 2021-01-03 | 2022-07-07 | 李华玉 | Dual-fuel combined circulating steam power device |
| WO2022141611A1 (en) * | 2021-01-03 | 2022-07-07 | 李华玉 | Dual-fuel combined cycle steam power device |
| WO2022148329A1 (en) * | 2021-01-11 | 2022-07-14 | 李华玉 | Dual-fuel gas-steam combined cycle power equipment |
| WO2022152007A1 (en) * | 2021-01-17 | 2022-07-21 | 李华玉 | Dual-fuel combined circulating power apparatus |
| WO2022156523A1 (en) * | 2021-01-25 | 2022-07-28 | 李华玉 | Dual-fuel gas-steam combined cycle power device |
| WO2022161112A1 (en) * | 2021-01-27 | 2022-08-04 | 李华玉 | Dual-fuel combined cycle steam power device |
| WO2022199199A1 (en) * | 2021-03-22 | 2022-09-29 | 李华玉 | Dual-fuel combined cycle power apparatus |
| WO2022206085A1 (en) * | 2021-03-29 | 2022-10-06 | 李华玉 | Dual-fuel combined cycle power device |
| WO2022206087A1 (en) * | 2021-04-01 | 2022-10-06 | 李华玉 | Dual-fuel combined-cycle power device |
| WO2022213688A1 (en) * | 2021-04-06 | 2022-10-13 | 李华玉 | Hydrogen fuel-low-grade fuel combined cycle power device |
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