CN109098797A - A kind of coal gas electricity generation system - Google Patents
A kind of coal gas electricity generation system Download PDFInfo
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- CN109098797A CN109098797A CN201710474895.6A CN201710474895A CN109098797A CN 109098797 A CN109098797 A CN 109098797A CN 201710474895 A CN201710474895 A CN 201710474895A CN 109098797 A CN109098797 A CN 109098797A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air Supply (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of coal gas electricity generation systems, it include: steam turbine, generator, boiler and the economizer being mounted in the boiler, air preheater and superheater, extracted steam from turbine is transmitted to the preheater and the heat source as the preheater, and the preheater preheats the coal gas in the first pipeline.Sucking rate of the present invention increases, and cold source energy is lower, and powergenerationcycleefficiency improves；Using backheat heating gas, backheat heat improves extremely high-grade by extremely low-grade eventually for the theoretical temperature combustion for improving coal gas, thermal energy, so, backheat heating gas has bigger thermodynamic significance in terms of improving power generation cycle quality.The raising of coal gas theoretical temperature combustion increases boiler radiant heat share, and Boiler Metallic consumption decreases.
Description
Technical field
The invention belongs to coal gas technical field of power generation, relate in particular to a kind of coal gas electricity generation system.
Background technique
Existing gas generating system is all made of bled steam preheating water supply, i.e., so-called backheat heat cycles reduce cold source energy,
But since water supply thermal capacity is limited, pumping quantity is constrained, causes coal gas generating efficiency still not high, such as the height of high voltage parameter
Producer gas boiler powergenerationcycleefficiency only has 38% or so, and not high one of the reason of electricity generation system generating efficiency is: although high
The gas boiler electricity generation system of parameter uses the extraction cycle of steam extraction heating water supply to reduce cold source energy, improve circulation effect
Rate, but since water supply thermal capacity is limited, steam extraction rate is lower, so constraining system generating efficiency.
Summary of the invention
For the problem that existing gas boiler electricity generation system steam extraction rate is low, cold source energy is high and powergenerationcycleefficiency is lower,
The purpose of the present invention is to provide a kind of coal gas electricity generation system, which utilizes extracted steam from turbine, returns simultaneously
Hot water supply and coal gas.
The purpose of the present invention is what is be achieved by following technical proposals.
A kind of coal gas electricity-generating method, comprising the following steps:
1) coal gas is input in boiler by the first pipeline, while combustion-supporting air is input in boiler, made described
Coal gas burns in the boiler, and the flue gas after burning is expelled to outside the boiler by outlet pipe；
2) water of liquid is made to be input to pipeline in boiler by third pipeline, the water absorbs the combustion of coal gas in boiler
The amount of heating simultaneously forms vapor, the vapor is passed through steam turbine, generator generates electricity under the driving of the steam turbine；
3) at least one preheater is installed on the first pipeline, extracted steam from turbine is transmitted to the preheater and as this
The heat source of preheater, the preheater preheat the coal gas in the first pipeline.
In the step 3), at least one heater is installed on third pipeline, extracted steam from turbine is transmitted to described
Heater and heat source as the heater, the heater preheat the water of liquid in third pipeline.
A kind of coal gas electricity generation system, comprising: steam turbine, generator, boiler and the province's coal being mounted in the boiler
Device, air preheater and superheater, the Single port and air communication of air duct, the another port of the air duct is penetrated to described
It is connected in boiler and with the air inlet of the air preheater；Gas burner is installed on the side wall of the boiler, it is described empty pre-
The gas outlet of device is connected to the Single port of the second pipeline, the another port of second pipeline be pierced by outside the boiler with it is described
Gas burner connection, the Single port of the first pipeline are connected to coal gas, and the another port of first pipeline and the coal gas fire
Burner connection, the air and coal gas are mixed and be passed through in the boiler by the gas burner to burn；Wherein, in institute
It states and at least one preheater is installed on the first pipeline；
For intaking, another port is connected to the Single port of third pipeline with the water inlet of economizer, is used for province's coal
Device water flowing, wherein oxygen-eliminating device and at least one heater are equipped on the third pipeline；
The water outlet of the economizer is connected to by pipeline with the water inlet of the drum, is pacified in the side wall of the boiler
Equipped with more interconnected water screen tubes, the down-comer of the drum is connected to by pipeline with the water screen tube, so that institute
The saturated water for stating down-comer discharge flows into heat exchange in the water screen tube and forms steam water interface；The water screen tube passes through pipeline
It is connected to the tedge of the drum, the steam (vapor) outlet of the drum is connected to by pipeline with the air intake of the superheater, institute
The venthole for stating superheater is connected to the air intake of the steam turbine, and it (can be axis that the steam turbine is fixedly mounted with the generator
Connect), for driving the electrical power generators；The venthole of the steam turbine and the air intake of condenser are connected by the 4th pipeline
Logical, water is discharged into the third pipeline by the discharge outlet of the condenser by the 5th pipeline；Wherein, the steam extraction of the steam turbine
Mouth is connected to the air intake of the preheater and heater, so that extracted steam from turbine and the phase by the preheater and heater
The coal gas and water answered exchange heat；The venthole of the preheater and heater pass through pipeline and the third pipeline directly or
Indirect communication, so that the extracted steam from turbine after heat exchange is discharged into the third pipeline；
An outlet pipe is communicated on the boiler, for successively passing through the superheater in the boiler, saving coal
The gas of device and air preheater is expelled to outside the boiler.
In the above-mentioned technical solutions, the extraction opening of the steam turbine is connected to the air intake of the preheater and heater
Mode an are as follows: main pipe rail is communicated on the extraction opening of the steam turbine, the main pipe rail branch forms two branch pipelines, two institutes
The other end for stating branch pipeline is connected to the air intake of the preheater and heater respectively.
In the above-mentioned technical solutions, the heater is steam-water injection.
In the above-mentioned technical solutions, the venthole of the preheater is used by the 6th pipeline and the steam-water injection
It is connected in mixed steam with the water tank of water.
In the above-mentioned technical solutions, the heater is surface heater.
In the above-mentioned technical solutions, the venthole of the preheater is used to place by pipeline with the surface heater
The cavity of heat medium is connected to, and the cavity is connected to the Single port of the 7th pipeline, the another port and one of the 7th pipeline
The discharge outlet of condensing unit connection, the condensing unit passes through pipeline and the third pipeline connection.
In the above-mentioned technical solutions, at least one feed pump is installed in the third pipeline.
In the above-mentioned technical solutions, condensate pump is installed on the 5th pipeline.
In the above-mentioned technical solutions, pressuring machine is installed on first pipeline.
In the above-mentioned technical solutions, pressure fan is installed on the air duct.
In the above-mentioned technical solutions, the port of the outlet pipe is connected with a chimney.
In the above-mentioned technical solutions, air-introduced machine is installed on the outlet pipe.
In the above-mentioned technical solutions, the preheater is surface heater.
Compared with the prior art, the invention has the benefit that
1) new system bleeder steam amount increases, and cold source energy is lower, and powergenerationcycleefficiency improves；
2) backheat heating gas is used, backheat heat is eventually for the theoretical temperature combustion for improving coal gas, and thermal energy is by extremely low
Grade improves extremely high-grade, so, backheat heating gas is anticipated in terms of improving power generation cycle quality with bigger thermodynamics
Justice.
3) raising of coal gas theoretical temperature combustion increases boiler radiant heat share, and Boiler Metallic consumption is dropped
It is low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of coal gas electricity generation system of the invention.
Wherein:
1: gas burner, 2: boiler, 3: superheater, 4: drum, 5: economizer, 6: air preheater, 7: pressure fan, 8: water supply
Pump, 9: steam turbine, 10: primary heater, 11: secondary heater, 12: third heater, 13: the four heaters, 14: power generation
Machine, 15: condenser, 16: condensate pump, 17: pressuring machine, 18: the first preheaters, 19: the second preheaters, 20: oxygen-eliminating device, 21:
Third preheater, 22: the four preheaters, 23: chimney, 24: air-introduced machine, 25: the first pipelines, 26: the second pipelines, 27: third pipe
Road, 28: the four pipelines, 29: the five pipelines.
Specific embodiment
Technical solution of the present invention is further illustrated combined with specific embodiments below.
A kind of coal gas electricity-generating method, comprising the following steps:
1) coal gas is input in boiler 2 by the first pipeline 25, while combustion-supporting air is input in boiler 2, made
Coal gas burns in boiler 2, and the flue gas after burning is expelled to outside boiler 2 by outlet pipe；
2) water of liquid is made to be input to the pipeline in boiler 2 by third pipeline 27, water absorbs the combustion of coal gas in boiler 2
The amount of heating simultaneously forms vapor, vapor is passed through steam turbine 9, generator 14 generates electricity under the driving of steam turbine 9；From steam turbine
The steam exhaust of discharge can form water by condensation and import third pipeline 27 again, can also be expelled directly out.
3) at least one preheater is installed on the first pipeline 25, by extracted steam from turbine be transmitted to preheater and as this it is pre-
The heat source of hot device, preheater preheat the coal gas in the first pipeline 25.
Preferably, in step 3), at least one heater is installed on third pipeline 27, extracted steam from turbine is transmitted to
Heater and heat source as the heater, heater preheat the water of liquid in third pipeline 27.
Above-mentioned coal gas electricity-generating method can be realized by following specific structures.
As shown in Figure 1, comprising: steam turbine 9, generator 14, boiler 2 and the economizer 5 being mounted in boiler 2, sky are pre-
Device 6 and superheater 3, the Single port and air communication of air duct, the another port of air duct penetrate in boiler 2 and with sky
The air inlet of pre- device 6 is connected to；Gas burner 1, the gas outlet of air preheater 6 and the one of the second pipeline 26 are installed on boiler 2
Port connection, the another port of the second pipeline 26 are pierced by boiler 2 is outer and are connected to gas burner 1, one end of the first pipeline 25
Mouth is connected to coal gas, and the another port of the first pipeline 25 is connected to gas burner 1, and gas burner 1 mixes air and coal gas
Merging, which is passed through in boiler 2, burns；Wherein, at least one preheater is installed on the first pipeline 25；
For intaking, the another port of third pipeline 27 is connected to the Single port of third pipeline 27 with the water inlet of economizer 5,
For to 5 water flowing of economizer, wherein be equipped with oxygen-eliminating device 20 and at least one heater on third pipeline 27；
The water outlet of economizer 5 is connected to by pipeline with the water inlet of drum 4, and more are equipped in the side wall of boiler 2
The down-comer of interconnected water screen tube, drum 4 is connected to by pipeline with water screen tube, so that the saturated water of down-comer discharge
It flows into heat exchange in water screen tube and forms steam water interface；Water screen tube is connected to by pipeline with the tedge of drum 4, drum 4
Steam (vapor) outlet is connected to by pipeline with the air intake of superheater 3, and the venthole of superheater 3 is connected to the air intake of steam turbine 9, vapour
Turbine 9 is fixedly mounted with generator 14, is generated electricity for driven generator 14；The venthole of steam turbine 9 and the air intake of condenser 15 are logical
The connection of the 4th pipeline 28 is crossed, water is discharged into third pipeline 27 by the discharge outlet of condenser 15 by the 5th pipeline 29；Wherein, steamer
The extraction opening of machine 9 is connected to the air intake of preheater and heater, so that extracted steam from turbine and by preheater and heater
Corresponding coal gas and water exchange heat；The venthole of preheater and heater passes through pipeline and third pipeline 27 is direct or indirect
Connection, so that the extracted steam from turbine after heat exchange is discharged into third pipeline 27；
An outlet pipe is communicated on boiler 2, it is pre- for will successively pass through superheater 3, economizer 5 and sky in boiler 2
The gas of device 6 is expelled to outside boiler 2.
Preferably, the mode that the extraction opening of steam turbine 9 is connected to the air intake of preheater and heater are as follows: steam turbine 9
Be communicated with a main pipe rail on extraction opening, main pipe rail branch forms two branch pipelines, the other end of two branch pipelines respectively with preheating
Device is connected to the air intake of heater, and preheater is surface heater.
Heater is steam-water injection or surface heater, when heater is steam-water injection, preheater
Venthole (do not shown in figure by the water tank that the 6th pipeline (not shown) and steam-water injection are used for mixed steam and water
It is connected to out)；When heater is surface heater, the venthole of preheater is added by pipeline and surface heater for placing
The cavity (not shown) of thermal medium is connected to, and cavity is connected to the Single port of the 7th pipeline (not shown), the 7th pipeline
Another port be connected to a condensing unit, the discharge outlet of condensing unit is connected to by pipeline with third pipeline 27.
Preferably, at least one feed pump 8 is installed in third pipeline 27.
Preferably, condensate pump 16 is installed on the 5th pipeline 29.
Preferably, pressuring machine 17 is installed on the first pipeline 25.
Preferably, pressure fan 7 is installed on air duct.
Preferably, the port of outlet pipe is connected with a chimney 23.
Preferably, air-introduced machine 24 is installed on outlet pipe.
Coal gas-flue gas flow: the burner hearth that heating gas and hot-air enter boiler 2 through gas burner 1 forms jet stream, goes forward side by side
Row combustion heat release, combustion product successively pass through superheater 3, economizer 5 and air preheater 6 in the burner hearth of boiler 2, and to superheater
3, the corresponding cooling medium heat release in economizer 5 and air preheater 6, then through outlet pipe under the swabbing action of air-introduced machine 24
It is discharged into atmosphere.
Air flow: after the air of environment temperature pressurizes via pressure fan 7, absorbing flue gas low-temperature waste heat in air preheater 6,
Enter after air preheat through gas burner 1 combustion-supporting for gas-fired in the burner hearth of boiler 2.
Water-steam flow journey: boiler feedwater enters in economizer 5 through the pressurization of feed pump 8 to exchange heat, subsequently into drum 4, drum
The middle heat absorption of water screen tube (not marking in figure) that saturated water in 4 enters boiler 2 through down-comer forms steam water interface and returns
In drum 4, saturated vapor is drawn to enter in superheater 3 by the steam (vapor) outlet of drum 4 carried out thermosetting superheated steam, and overheat is steamed
Vapour, which enters in steam turbine 9, to do work, and thermal energy is mechanical energy, and mechanical energy is then changed into electric energy by generator 14.Acting
Steam exhaust afterwards enter condenser 15 to cooling water heat release formed condensed water, condensed water through condensate pump 16 pressurization after, by with add
It after the deoxygenation of hot device and oxygen-eliminating device 20, then pressurizes through 8 feed pumps and is re-used as the economizer that boiler feedwater enters in boiler, participate in
Next round power cycle.
Steam extraction heat regenerative system process: in order to reduce power generation cycle cold source energy, improve powergenerationcycleefficiency, steam turbine is used
Several grades of steam extractions step by step preheat condensed water and coal gas using steam extraction.Attached drawing 1 is by taking level Four steam extraction as an example, from described cold
Condenser 15 obtains condensed water after the pressurization of condensate pump 16, successively passes through the 4th heater 13, third heater 12, secondary heater
11 and primary heater 10 in steam be directly mixed in formula backheat heating or surface heater and oxygen-eliminating device 20 deoxygenation at
Reason, then forms boiler feedwater, is re-used as boiler feedwater through the pressurization of feed pump 8 and enters boiler, participates in next round power cycle.
After the pressurized machine 17 of coal gas from gaspipe network pressurizes, into the first preheater 18, the second preheater 19, third preheater
21, indirect heat exchange step by step being carried out with extracted steam from turbine in the 4th preheater 22 and being heated up, the coal gas after preheating is fired through coal gas
Burner 1 enters burning in boiler.The condensed water formed after steam extraction heat releases at different levels is then back in third pipeline 27.
According to calculation of thermodynamics, for the 50MW generating set using the pure combustion blast furnace gas boiler power generation of high voltage parameter, if
Using the invention patent by 200 DEG C of gas preheating temperature, then fuel 13% or so can be saved, powergenerationcycleefficiency raising is about
2.8%, annual multiple electricity is about 1108*104Kwh, while realizing pernicious gas emission reduction 10% or so.
Coal gas electricity generation system of the invention retains original steam extraction back heating system, adds extracted steam from turbine backheat simultaneously
Water supply and coal gas system: carrying out extending capacity reformation to original turbine bleed point and extraction line, increase extraction flows at different levels, at different levels
Steam extraction distributes a certain amount of steam step backheat coal gas in addition to for step preheating water supply.
Coal gas electricity generation system of the invention improves powergenerationcycleefficiency, and the main loss in efficiency of power generation cycle process is
Cold source energy, existing extracted steam from turbine backheat heat cycles exactly extract steam acting out afterwards to a certain extent, heat in backheat
Condensation heat is for heating water supply in device.In backheat heating water supply system, steam although do part function less, condensation vaporization
Latent heat is recycled to by water supply to be continued to do work in electricity generation system, reduces cold source energy, since the thermal energy of recycling is greater than the function done less,
So powergenerationcycleefficiency is improved.The present invention reduces cold source energy according to backheat heating water supply, improves powergenerationcycleefficiency
Method, backheat heat water supply system on the basis of, extension increase extracted steam from turbine backheat heating gas system, the original of new system
Reason is to exchange the latent heat of vaporization of steam condensation to coal gas, and circulation heat recovery is to boiler internal in the form of coal gas physical thermal.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (10)
1. a kind of coal gas electricity generation system characterized by comprising steam turbine (9), generator (14), boiler (2) and installation
Economizer (5), air preheater (6) and superheater (3) in the boiler (2), the Single port and air communication of air duct, separately
Single port is penetrated interior to the boiler (2) and is connected to the air inlet of the air preheater (6)；On the side wall of the boiler (2)
It being equipped with gas burner (1), the gas outlet of the air preheater (6) is connected to the Single port of the second pipeline (26), and described second
The another port of pipeline (26) is pierced by the boiler (2) and is connected to outside with the gas burner (1)；The one of first pipeline (25)
Port is connected to coal gas, and the another port of first pipeline (25) is connected to the gas burner (1), the gas-fired
The air and coal gas are mixed and be passed through in the boiler (2) by device (1) to burn；Wherein, in first pipeline (25)
On at least one preheater is installed；
For intaking, another port is connected to the Single port of third pipeline (27) with the water inlet of the economizer (5), is used for institute
State economizer (5) water flowing, wherein oxygen-eliminating device (20) and at least one heater are installed on the third pipeline (27)；
The water outlet of the economizer (5) is connected to by pipeline with the water inlet of drum (4), in the side wall of the boiler (2)
More interconnected water screen tubes are installed, the down-comer of the drum (4) is connected to by pipeline with the water screen tube, with
So that the saturated water of the down-comer discharge is flowed into heat exchange in the water screen tube and forms steam water interface；The water screen tube passes through
Pipeline is connected to the tedge of the drum (4), and the steam (vapor) outlet of the drum (4) passes through pipeline and the superheater (3)
Air intake connection, the venthole of the superheater (3) are connected to the air intake of the steam turbine (9), the steam turbine (9) and institute
It states generator (14) to be fixedly mounted with, for driving the generator (14) to generate electricity；The venthole of the steam turbine (9) and condenser (15)
Air intake be connected to by the 4th pipeline (28), water is discharged into institute by the 5th pipeline (29) by the discharge outlet of the condenser (15)
It states in third pipeline (27)；Wherein, the extraction opening of the steam turbine (9) is connected to the air intake of the preheater and heater,
So that extracted steam from turbine exchanges heat with corresponding coal gas and water by the preheater and heater；The preheater and plus
The venthole of hot device passes through pipeline and is directly or indirectly connected to the third pipeline (27), so that the extracted steam from turbine after heat exchange
It is discharged into the third pipeline (27)；
Be communicated with an outlet pipe on the boiler (2), for will in the boiler (2) successively by the superheater (3),
The gas of economizer (5) and air preheater (6) is expelled to the boiler (2) outside.
2. coal gas electricity generation system according to claim 1, which is characterized in that the extraction opening of the steam turbine (9) and institute
State the mode that preheater is connected to the air intake of heater are as follows: be communicated with a main pipe rail, institute on the extraction opening of the steam turbine (9)
State main pipe rail branch and form two branch pipelines, the other end of two branch pipelines respectively with the preheater and heater into
Steam ports connection, the preheater are surface heater.
3. coal gas electricity generation system according to claim 2, which is characterized in that the heater is steam-water mixing heating
The venthole of device, the preheater is connected by the 6th pipeline and the steam-water injection for the water tank of mixed steam and water
It is logical.
4. coal gas electricity generation system according to claim 2, which is characterized in that the heater is surface heater,
The venthole of the preheater is connected to by pipeline with the cavity that the surface heater is used to place heat medium, the chamber
Body is connected to the Single port of the 7th pipeline, and the another port of the 7th pipeline is connected to a condensing unit, the condensing unit
Discharge outlet be connected to the third pipeline (27) by pipeline.
5. coal gas electricity generation system according to claim 3 or 4, which is characterized in that installed in the third pipeline (27)
There is at least one feed pump (8).
6. coal gas electricity generation system according to claim 5, which is characterized in that be equipped on the 5th pipeline (29)
Condensate pump (16).
7. coal gas electricity generation system according to claim 6, which is characterized in that be equipped on first pipeline (25)
Pressuring machine (17).
8. coal gas electricity generation system according to claim 7, which is characterized in that be equipped with air-supply on the air duct
Machine (7), the port of the outlet pipe are connected with a chimney (23), and air-introduced machine (24) are equipped on the outlet pipe.
9. a kind of coal gas electricity-generating method, which comprises the following steps:
1) coal gas is input in boiler (2) by the first pipeline (25), while combustion-supporting air is input in boiler (2),
The coal gas burning, flue gas after burning in boiler (2) is set to be expelled to the boiler (2) outside by outlet pipe；
2) water of liquid is made to be input to the pipeline in boiler (2) by third pipeline (27), the water absorbs coal in boiler (2)
The calory burning of gas simultaneously forms vapor, and the vapor is passed through steam turbine (9), and generator (14) is in the steam turbine (9)
Driving under generate electricity；
3) at least one preheater is installed on the first pipeline (25), extracted steam from turbine is transmitted to the preheater and as this
The heat source of preheater, the preheater preheat the coal gas in the first pipeline (25).
10. coal gas electricity-generating method according to claim 9, which is characterized in that in the step 3), in third pipeline
(27) at least one heater is installed on, extracted steam from turbine is transmitted to the heater and as the heat source of the heater, institute
Heater is stated to preheat the water of liquid in third pipeline (27).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110131699A (en) * | 2019-06-04 | 2019-08-16 | 中冶南方都市环保工程技术股份有限公司 | A kind of overcritical low-heat value gas electricity generation system and method |
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| WO2012114944A1 (en) * | 2011-02-25 | 2012-08-30 | 三菱重工業株式会社 | Boiler plant |
| CN103939932A (en) * | 2014-04-28 | 2014-07-23 | 中冶华天工程技术有限公司 | Blast furnace gas boiler flue gas waste heat deep recycling system |
| CN106382619A (en) * | 2016-11-09 | 2017-02-08 | 北京京诚科林环保科技有限公司 | Deep recycling system for gas-fired boiler flue gas waste heat |
| CN106500082A (en) * | 2016-12-05 | 2017-03-15 | 中冶华天工程技术有限公司 | A kind of gas generating system based on steel mill's saturated vapor Optimum utilization |
| CN106766966A (en) * | 2017-02-08 | 2017-05-31 | 中冶华天工程技术有限公司 | A kind of heater for rolling steel waste heat recycling system |
| CN106839789A (en) * | 2017-02-08 | 2017-06-13 | 中冶华天工程技术有限公司 | A kind of heater for rolling steel residual neat recovering system based on air and coal gas progressive solution |
| CN206785440U (en) * | 2017-06-21 | 2017-12-22 | 华北理工大学 | Coal gas electricity generation system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131699A (en) * | 2019-06-04 | 2019-08-16 | 中冶南方都市环保工程技术股份有限公司 | A kind of overcritical low-heat value gas electricity generation system and method |
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