CN203043816U - Comprehensive utilization system of cold quantity of smoke denitration and power generation system - Google Patents
Comprehensive utilization system of cold quantity of smoke denitration and power generation system Download PDFInfo
- Publication number
- CN203043816U CN203043816U CN 201320005629 CN201320005629U CN203043816U CN 203043816 U CN203043816 U CN 203043816U CN 201320005629 CN201320005629 CN 201320005629 CN 201320005629 U CN201320005629 U CN 201320005629U CN 203043816 U CN203043816 U CN 203043816U
- Authority
- CN
- China
- Prior art keywords
- liquefied ammonia
- condenser
- vaporizer
- recirculated water
- liquid ammonia
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model discloses a comprehensive utilization system of cold quantity of a smoke denitration and power generation system. The comprehensive utilization system comprises a liquid ammonia gasification mechanism and a power generation mechanism, wherein the liquid ammonia gasification mechanism comprises a gasifying device for gasifying liquid ammonia; the power generation mechanism comprises a condenser for cooling steam of a steam turbine; an inlet end pipeline and/or an outlet end pipeline of the condenser are/is provided with a circulating water conveying pipeline in a communicating manner; the circulating water conveying pipeline conveys hot water to the gasifying device; and a heat source for gasifying the liquid ammonia is provided for the gasifying device by circulating water of the condenser. According to the comprehensive utilization system disclosed by the utility model, the heat consumed in a liquid ammonia gasifying process of an existing denitration technology is overcome; cold energy in a denitration technology process is integrated with power generation of the steam turbine according to physicochemical characteristics of the liquid ammonia (which serves as a refrigerating agent) by combining actual conditions of a power plane, so that on one hand, the energy consumed by heating the liquid ammonia is saved in a denitration process; and on the other hand, the physicochemical characteristics of the liquid ammonia which serves as the refrigerating agent are used for cooling the circulating water of the steam turbine, the pressure of the condenser is reduced, the power generation efficiency is improved and the coal consumed for supplying power is reduced.
Description
Technical field
The utility model relates to a kind of denitrating flue gas and electricity generation system cold utilization system.
Background technology
Boiler of power plant can discharge a large amount of flue gases in power generation process, flue gas need carry out desulfurization, dedusting and denitration (namely removing nitrogen oxide) just can enter atmosphere, nitrogen oxide is a kind of greenhouse gases, and is bigger to atmosphere harm, and the nitrogen oxide of per unit volume is 300 times of carbon dioxide harm.
At present, what denitration was adopted is that catalyst is installed in flue, simultaneously gaseous ammonia is sprayed in the flue gas, through beds generation chemical reaction, generates harmless nitrogen and steam, thereby reaches the purpose of denitration after the flue gas of high temperature and gas ammonia mix.
Ammonia and reaction of nitrogen oxides equation are: 4NO+4NH
3+ O
2→ 4N
2+ 6H
2O, 4NH
3+ 2NO
2+ O
2→ 3N
2+ 6H
2O.
But, gas ammonia all is by buying liquid ammonia in the existing denitration technology, then by a vaporizer Steam Heating, make liquefied ammonia obtain gasification, become gaseous ammonia, the heat that consumes in this process is very big, such as, two 600MW units per hour need consume the heat of 1435500Kcal, and annual heat exhaustion is equivalent to 1640 tons of mark coals.
In order to overcome the heat that existing denitration technology liquid ammonia gasification consumes, physicochemical characteristic according to liquefied ammonia, liquefied ammonia or cold-producing medium, in conjunction with power plant's actual conditions, turbine condenser needs low-temperature cooling water to guarantee the condensing effect, improves steam turbine power generation efficient, therefore is necessary cold is fully utilized, the energy-saving denitration technology of developing a kind of not consumption of calorie energy and cold being fully utilized reaches the recycling economy purpose.
The utility model content
Problem at the prior art existence, the purpose of this utility model is to provide a kind of denitrating flue gas and electricity generation system cold utilization system, this device mainly is to be combined with power plant technology, utilize power plant's used heat to reach energy-conservation purpose, improve the turbine condenser cooling effect simultaneously, improve unit generation efficient.
For achieving the above object, a kind of denitrating flue gas of the utility model and electricity generation system cold utilization system, comprise liquefied ammonia gasification mechanism and power facility, wherein, liquefied ammonia gasification mechanism comprises the vaporizer for gasification liquefied ammonia, power facility comprises the condenser for cooling steam turbine steam, be communicated with on the entrance point pipeline of condenser and/or the port of export pipeline and be provided with the recirculated water feed-line, this recirculated water feed-line delivering hot water provides the thermal source of gasification liquefied ammonia for vaporizer by condenser recirculated water to vaporizer.
Further, described vaporizer is communicated with by described recirculated water feed-line and described condenser are in parallel.
Further, described liquefied ammonia gasification mechanism also includes for the liquefied ammonia storage tank that stores liquefied ammonia, is used for liquefied ammonia delivery pump and the gas ammonia feed-line of pressurized delivered liquefied ammonia, the liquefied ammonia delivery pump is sent into the liquefied ammonia in the liquefied ammonia storage tank and is carried out heating and gasifying in the vaporizer through pressurization, the gas ammonia after the gas ammonia feed-line will gasify is delivered in the flue.
Further, described system also comprises denitration mechanism, this denitration mechanism comprise boiler exhaust gas discharging flue, be installed in denitrating catalyst and emptying chimney on the flue.
Further, described power facility also comprises the high steam conveyance conduit, is used for the double-curve cooling column of cooling circulating water and is used for providing circulation hydrodynamic water circulating pump.
Further, the recirculated water that is delivered in the described recirculated water feed-line in the described vaporizer is the water outlet of described condenser, and water outlet enters double-curve cooling column again and further cools off after described vaporizer cooling.
Further, the recirculated water that is delivered in the described recirculated water feed-line in the described vaporizer is the backwater of described condenser, and backwater directly enters in the described condenser after described vaporizer cooling and provides low-temperature receiver for it.
The utility model overcomes the heat that existing denitration technology liquid ammonia gasification consumes, physicochemical characteristic according to liquefied ammonia, liquefied ammonia or cold-producing medium, in conjunction with power plant's actual conditions, the cold energy of denitration technology process is combined with steam turbine power generation, save the energy that consumes because of heating liquefied ammonia in the denitrification process on the one hand, utilizing liquefied ammonia simultaneously is that the physico-chemical property of cold-producing medium cools off steam turbine recirculated water, reduce condenser pressure, improve generating efficiency, reduce net coal consumption rate.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the utility model embodiment 1 structural representation.
The specific embodiment
Below, with reference to the accompanying drawings, the utility model is more fully illustrated, exemplary embodiment of the present utility model has been shown in the accompanying drawing.Yet the utility model can be presented as multiple multi-form, and should not be construed as the exemplary embodiment that is confined to narrate here.But, these embodiment are provided, thereby make the utility model comprehensively with complete, and scope of the present utility model is fully conveyed to those of ordinary skill in the art.
In order to be easy to explanation, here can use such as " on ", D score " left side " " right side " the space relative terms of etc.ing, for element shown in the key diagram or the feature relation with respect to another element or feature.It should be understood that except the orientation shown in the figure spatial terminology is intended to comprise the different azimuth of device in using or operating.For example, if the device among the figure is squeezed, be stated as the element that is positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, the exemplary term D score can comprise upper and lower orientation both.Device can otherwise be located (revolve turn 90 degrees or be positioned at other orientation), and the used here relative explanation in space can correspondingly be explained.
A kind of denitrating flue gas of the utility model and electricity generation system cold utilization system include: liquefied ammonia gasification mechanism, denitration mechanism and power facility.
Wherein, liquefied ammonia gasification mechanism include for the liquefied ammonia storage tank 1 that stores liquefied ammonia, be used for pressurized delivered liquefied ammonia liquefied ammonia delivery pump 2, be used for vaporizer 3 and the gas ammonia feed-line 4 of gasification liquefied ammonia.
Denitration mechanism include boiler exhaust gas discharging flue 5, at flue denitrating catalyst 6 and emptying chimney 7 are installed.
Power facility comprises high steam conveyance conduit 8, is used for the steam turbine 9 of generating, is used for the condenser 10 of cooling steam turbine steam, the double-curve cooling column 11 that is used for cooling circulating water, recirculated water feed-line 12, be used for providing the hydrodynamic water circulating pump 13 of circulation etc.
The utility model provides a kind of denitrating flue gas and electricity generation system cold utilization system, implements as follows:
1. the liquefied ammonia of Gou Maiing is stored in the liquefied ammonia storage tank 1, mainly for the production of buffering, liquefied ammonia delivery pump 2 is sent into the liquefied ammonia in the liquefied ammonia storage tank 1 and is carried out heating and gasifying in the vaporizer 3 through pressurization, gas ammonia after the gasification is sent gas ammonia into boiler flue 5 along gas ammonia conveyance conduit 4, and gas ammonia and flue gas fully mix in flue 5;
2. enter denitrating catalyst 6 beds after gas ammonia and flue gas fully mix in flue 5, fully react at catalyst 6 bed gas ammonias and nitrogen oxide, nitrogen oxide is converted into free of contamination nitrogen and steam and enters flue gas emptying chimney 7 with flue gas and finish denitrification process;
3. high steam is sent in the steam turbine 9 by high pressure steam line 8 and is generated electricity, the steam of doing completion enters condenser 10 and cools off, recirculated water is heated steam being cooled off simultaneously, recirculated water after the heating enters double-curve cooling column 11 and carries out the flash distillation cooling, and tail gas is extracted out by liquid-ring vacuum pump 14;
The recirculated water backwater is because pressure rises to double-curve cooling column 11 top sprays, descended by the eminence freely falling body, in the decline process, contact flash distillation and cooling with air, finally fall into double-curve cooling column 11 bottoms, be sent to condenser 10 through water circulating pump pressurization again or vaporizer 3 waits other users, circulation repeatedly.
For the type of attachment of recirculated water feed-line 12, adopted two kinds of versions in the utility model:
As shown in Figure 1, the recirculated water that is delivered in the recirculated water feed-line 12 in the vaporizer 3 is the water outlet of condenser 10, and water outlet enters double-curve cooling column 11 again and further cools off after vaporizer 3 coolings.The heat of water outlet is absorbed a part in this mode in vaporizer 3, has reduced temperature, when it enters double-curve cooling column 11 again and cools off, can effectively reduce the live load of double-curve cooling column 11, and cooling effect is provided.
As shown in Figure 2, the recirculated waters that are delivered in the recirculated water feed-line 12 in the vaporizer 3 are the backwater of condenser 10, and backwater directly enters after vaporizer 3 coolings in the condenser to it provides low-temperature receiver, no longer enters double-curve cooling column 11.The heat of backwater further is absorbed in vaporizer 3 in this mode, thereby the return water temperature that enters in the condenser 10 is lower, more is conducive to electrification technique as well as, improves generating efficiency.
The utility model adopts the beneficial effect after the technique scheme to be: 1. owing to changed original liquefied ammonia gasification mode, thermal source changes recirculated water into by steam (or electrical heating gas), saved significantly steam (or), cascaded utilization of energy, energy-saving effect is fairly obvious, and two 600,000 unit denitrification apparatus suppose to contain in the flue gas 500mg/m3 nitrogen oxide for example, the heat that needs thermal source 1435500Kcal/h can be saved 1640 tons in mark coal year; 2. recirculated water has heated liquefied ammonia in vaporizer, and liquefied ammonia has reduced circulating water temperature in gasification simultaneously.Two 600,000 machines are through reducing by 5 ° of C with the water of 500m3/h after this technology for example.Sent into condenser by the recirculated water after the cooling and come cooling steam, because recirculated water can effectively reduce about condenser pressure 1Kpa after through further cooling, sending into condenser, more be conducive to electrification technique as well as, improve generating efficiency, reduce net coal consumption rate; 3. the used recirculated water of vaporizer can adopt different connected modes such as parallel connection or series connection with the used recirculated water of condenser device, can not cause technogenic influence to power facility stability.
The utility model is through organically combining traditional denitrification apparatus and existing TRT, replace steam or electricity that liquefied ammonia is heated with recirculated water, the while cooling circulating water, low-temperature circulating water is sent into the condenser of steam turbine, reduce condenser pressure, improve unit generation efficient, reduce net coal consumption rate, play better effect, the technical program is guaranteeing that having electrification technique as well as now does not do the purpose that had both reached denitrating flue gas under the big change situation on the whole, play energy-conservation effect again, really realized the cold comprehensive utilization, reached the recycling economy purpose.
Claims (7)
1. a denitrating flue gas and electricity generation system cold utilization system, it is characterized in that, this system comprises liquefied ammonia gasification mechanism and power facility, wherein, liquefied ammonia gasification mechanism comprises the vaporizer for gasification liquefied ammonia, power facility comprises the condenser for cooling steam turbine steam, be communicated with on the entrance point pipeline of condenser and/or the port of export pipeline and be provided with the recirculated water feed-line, this recirculated water feed-line delivering hot water provides the thermal source of gasification liquefied ammonia for vaporizer by condenser recirculated water to vaporizer.
2. denitrating flue gas as claimed in claim 1 and electricity generation system cold utilization system is characterized in that, described vaporizer is communicated with by described recirculated water feed-line and described condenser are in parallel.
3. denitrating flue gas as claimed in claim 1 and electricity generation system cold utilization system, it is characterized in that, described liquefied ammonia gasification mechanism also includes for the liquefied ammonia storage tank that stores liquefied ammonia, is used for liquefied ammonia delivery pump and the gas ammonia feed-line of pressurized delivered liquefied ammonia, the liquefied ammonia delivery pump is sent into the liquefied ammonia in the liquefied ammonia storage tank and is carried out heating and gasifying in the vaporizer through pressurization, the gas ammonia after the gas ammonia feed-line will gasify is delivered in the flue.
4. denitrating flue gas as claimed in claim 1 and electricity generation system cold utilization system is characterized in that described system also comprises denitration mechanism, this denitration mechanism comprise boiler exhaust gas discharging flue, be installed in denitrating catalyst and emptying chimney on the flue.
5. denitrating flue gas as claimed in claim 1 and electricity generation system cold utilization system, it is characterized in that described power facility also comprises the high steam conveyance conduit, is used for the double-curve cooling column of cooling circulating water and is used for providing circulation hydrodynamic water circulating pump.
6. denitrating flue gas as claimed in claim 5 and electricity generation system cold utilization system, it is characterized in that, the recirculated water that is delivered in the described recirculated water feed-line in the described vaporizer is the water outlet of described condenser, and water outlet enters double-curve cooling column again and further cools off after described vaporizer cooling.
7. denitrating flue gas as claimed in claim 5 and electricity generation system cold utilization system, it is characterized in that, the recirculated water that is delivered in the described recirculated water feed-line in the described vaporizer is the backwater of described condenser, and backwater directly enters in the described condenser after described vaporizer cooling and provides low-temperature receiver for it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320005629 CN203043816U (en) | 2013-01-06 | 2013-01-06 | Comprehensive utilization system of cold quantity of smoke denitration and power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320005629 CN203043816U (en) | 2013-01-06 | 2013-01-06 | Comprehensive utilization system of cold quantity of smoke denitration and power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203043816U true CN203043816U (en) | 2013-07-10 |
Family
ID=48726817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320005629 Withdrawn - After Issue CN203043816U (en) | 2013-01-06 | 2013-01-06 | Comprehensive utilization system of cold quantity of smoke denitration and power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203043816U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055673A (en) * | 2013-01-06 | 2013-04-24 | 北京世纪源博科技股份有限公司 | Flue gas denitration and power generation system cold energy comprehensive utilization system |
| CN103644006A (en) * | 2013-11-29 | 2014-03-19 | 东方电气集团东方汽轮机有限公司 | Method for improving waste heat utilization of steam turbine unit |
-
2013
- 2013-01-06 CN CN 201320005629 patent/CN203043816U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055673A (en) * | 2013-01-06 | 2013-04-24 | 北京世纪源博科技股份有限公司 | Flue gas denitration and power generation system cold energy comprehensive utilization system |
| CN103644006A (en) * | 2013-11-29 | 2014-03-19 | 东方电气集团东方汽轮机有限公司 | Method for improving waste heat utilization of steam turbine unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103055673A (en) | Flue gas denitration and power generation system cold energy comprehensive utilization system | |
| CN104278975A (en) | Method and system for collecting seabed combustible ice | |
| CN103691260A (en) | Heat recovery water-saving system for desulfuration by wet process and process thereof | |
| CN104548933A (en) | Ammonia water ammonia production reducing agent supply device and method for SCR denitration | |
| CN206492366U (en) | The compact ammonia process carbon trapping system of ammoniacal liquor second-kind absorption-type heat pump driving | |
| CN203043816U (en) | Comprehensive utilization system of cold quantity of smoke denitration and power generation system | |
| CN104501528B (en) | Precooling system and precooling method for producing liquefied natural gas by methane synthesis gas | |
| CN202055878U (en) | Industrial exhaust heat power generation system | |
| CN207598302U (en) | A kind of electricity-water co-generation system | |
| CN103321616B (en) | The collection way of sea bed methane hydrate and system | |
| CN207081021U (en) | A kind of outer denitrating technique system of chain furnace high/low temperature flue gas holding furnace | |
| CN105275514A (en) | Waste gas dedusting and waste heat low-temperature exhaust heat organic Rankine cycle power generation system | |
| CN204447761U (en) | A kind of ammoniacal liquor ammonia reducing agent feeding mechanism for SCR denitration | |
| CN204147740U (en) | The ultra-clean exhaust system of a kind of coal steam-electric plant smoke ultralow temperature | |
| CN203750405U (en) | Safety SNCR (Selective Non Catalytic Reduction) denitration device | |
| CN203443264U (en) | Device for extracting methane liquid from purified garbage landfill gas | |
| CN204716320U (en) | A kind of gas turbine argon cycles power system | |
| CN203683494U (en) | Rural biomass energy comprehensive utilization system | |
| CN203308536U (en) | Synthesis ammonia blowing air waste heat recycling system | |
| CN210951369U (en) | Flue gas takes off white device condensate waste heat recovery and utilizes system | |
| CN103353207A (en) | Device for purifying methane liquid from purified landfill gas | |
| CN208911765U (en) | A kind of emission-control equipment using acetone ammonia | |
| CN203741035U (en) | Hydrogen supply system for kilowatt-level fuel cell | |
| CN105928247A (en) | Liquefied natural gas evaporation gas cold energy and combustion energy comprehensive utilization system | |
| CN203678215U (en) | Condensing system for condensing and recycling moisture in brown coal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |