CN105157050A - Ultra-low-emission energy supply system for industrial boiler - Google Patents
Ultra-low-emission energy supply system for industrial boiler Download PDFInfo
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- CN105157050A CN105157050A CN201510667037.4A CN201510667037A CN105157050A CN 105157050 A CN105157050 A CN 105157050A CN 201510667037 A CN201510667037 A CN 201510667037A CN 105157050 A CN105157050 A CN 105157050A
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- industrial boiler
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- heat exchanger
- energy supplying
- supplying system
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The invention discloses an ultra-low-emission energy supply system for an industrial boiler. The energy supply system comprises a fuel storage device (2), a combustor (3), the industrial boiler (5) and a flue gas treatment system. A discharge port of the fuel storage device (2) is communicated with a feed port of the combustor (3). An internal combustion chamber of the combustor (3) is communicated with a hearth entrance of the industrial boiler (5). A hearth exit of the industrial boiler (5) is communicated with a flue gas inlet of the flue gas treatment system. By means of the technical scheme, the combustion efficiency and the heat efficiency of the industrial boiler can be effectively improved, the energy utilization rate is increased, and emission of pollutants is reduced.
Description
Technical field
The present invention relates to energy environment protection technical field, particularly, relate to a kind of minimum discharge Industrial Boiler energy supplying system.
Background technology
In recent years, haze weather, acid rain, dust pollution event take place frequently, and have had a strong impact on the productive life of people.Coal is the industrial important energy source of China, and proportion in primary energy consumption total amount, up to 70.23%.But it exploitation and utilize in process and but create serious pollution problem.How to utilize resource efficiently and decreasing pollution to greatest extent, become the urgent task of pendulum in face of us.The environmental problem that pollution that caused by coal burning causes has become the restraining factors of China's sustainable economic development.
China's coal-burned industrial boiler is the main source that haze produces.Coal combustion technology falls behind, and efficiency of fire coal is lowly the serious one of the main reasons of coal combustion pollution.Due to the particularity of China's energy resource structure, the Industrial Boiler of China, based on fire coal, about uses 1/3rd of national raw coal output every year.Therefore, one of the primary pollution source of Industrial Boiler Ye Shi China air pollution due to coal combustion.
The backwardness of the factor of fuel and total system equipment seriously constrains the development of industrial boiler system, improves the energy utilization rate of industrial boilers in China, reduces the discharge of its pollutant, become major issue in the urgent need to address.Under current energy resource structure, the clean coal clean burning clean emission technology of research and development is the only way solving this contradiction.
Summary of the invention
The object of this invention is to provide a kind of Industrial Boiler energy supplying system, this energy supplying system can realize the minimum discharge of pollutant.
To achieve these goals, the invention provides a kind of minimum discharge Industrial Boiler energy supplying system, this energy supplying system comprises fuel storage device, burner, Industrial Boiler and smoke processing system, the discharging opening of described fuel storage device is communicated with the charging aperture of described burner, the internal combustion chamber of described burner is communicated with the burner hearth entrance of described Industrial Boiler, and the furnace outlet of described Industrial Boiler is communicated with the smoke inlet of described smoke processing system.
Preferably, described Industrial Boiler comprises the boiler body of the structure that forms as one, SNCR denitration reactor and SCR denitration reactor, described SNCR denitration reactor and SCR denitration reactor are positioned at the burner hearth of described boiler body, described SNCR denitration reactor is arranged in the position near described burner hearth entrance, and described SCR denitration reactor is arranged in the position near described furnace outlet.
Preferably, described smoke processing system comprises heat exchanger, deduster and desulfurizing tower, the furnace outlet of described Industrial Boiler is communicated with the smoke inlet of described heat exchanger, the exhanst gas outlet of described heat exchanger is communicated with the smoke inlet of described deduster, the exhanst gas outlet of described deduster is communicated with the smoke inlet of described desulfurizing tower, the water inlet of described heat exchanger is communicated with feedwater piping, and the delivery port of described heat exchanger is communicated with the water inlet of described Industrial Boiler.
Preferably, described deduster is sack cleaner, and described desulfurizing tower is Pneumatic emulsifying desulfurizing tower.
Preferably, described Pneumatic emulsifying desulfurizing tower has Double-Tower Structure.
Preferably, described heat exchanger is ceramic heat pipe formula heat exchanger.
Preferably, described energy supplying system also comprises fuel delivery means, for described fuel storage device transfer the fuel.
By technique scheme, effectively can improve efficiency of combustion and the thermal efficiency of Industrial Boiler, improve energy utilization rate, the discharge of decreasing pollution thing.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of the Industrial Boiler energy supplying system according to one embodiment of the present invention.
Description of reference numerals
1 fuel delivery means 2 fuel storage device
3 burner 4 robot control system(RCS)s
5 Industrial Boiler 6SNCR Benitration reactors
7SCR Benitration reactor 8 heat exchanger
9 deduster 10 desulfurizing towers
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As shown in Figure 1, the invention provides a kind of minimum discharge Industrial Boiler energy supplying system, this energy supplying system comprises fuel delivery means 1, fuel storage device 2, burner 3, Industrial Boiler 5 and smoke processing system, fuel delivery means 1 is for carrying coal derived fuel to fuel storage device 2, the discharging opening of fuel storage device 2 is communicated with the charging aperture of burner 3, the internal combustion chamber of burner 3 is communicated with the burner hearth entrance of Industrial Boiler 5, and the furnace outlet of Industrial Boiler 5 is communicated with the smoke inlet of smoke processing system.
By technique scheme, effectively can improve efficiency of combustion and the thermal efficiency of Industrial Boiler, improve energy utilization rate, the discharge of decreasing pollution thing.
In energy supplying system of the present invention, burner 3 mainly comprises supply air system, fuel system, ignition system and monitoring system, the function of supply air system is the air sending into certain wind speed and air quantity in internal combustion chamber, the function of fuel system is to ensure the fuel needed for burner combustion, the function of ignition system is the mixture lighting air and fuel, and the function of monitoring system is to ensure burner safety, stable operation.
Coal dust burns at the furnace cavity inner suspension of Industrial Boiler 5, and furnace wall disposed inboard has the pipe of dense arrangement, has water to flow through in pipe, forms water-cooling wall.Water-cooling wall, both as the radiation heating-surface of working medium, can protect furnace wall again, makes it unlikelyly burn.Coal dust is when stove combustion, although to water-cooling wall heat release, at the flame kernel that combustion reaction is the most violent, temperature still can reach 1500-1800 DEG C, therefore the ash content in fuel will be melted.Some larger soot particle can not the sedimentation gradually with flow of flue gas, and cools gradually and solidify, and finally falls into the slag-draining device of lower portion thereof.A large amount of thinner soot particle, then with flow of flue gas, also cools gradually in flow process, and solidified when arriving furnace outlet or become not too sticky soot particle, these thin ashes with flow of flue gas become flying dust.
In the present invention, Industrial Boiler 5 adopts rational chamber structure to design, according to the pneumatic field of force of cigarette, simulated combustion temperature field, choose furnace volume heat release rate, the section thermic load optimized the most, realize that fuel is lighted in time, rapidly after-flame and high efficient heat exchanging absorb, improve fuel burn-off rate, reduce unburned carbon in flue dust.
In burner 3 and Industrial Boiler 5, the technology such as classification is combustion-supporting by adopting, flue gas recirculation, low temperature low nitrogen burning, conservative control flame mechanism, effectively reduces thermal NO
xgenerate, realize the denitrogenation in combustion process, effectively reduce the pressure of follow-up smoke gas treatment, decrease control expense.
Preferably, as shown in Figure 1, SNCR (SNCR) Benitration reactor 6 and SCR (SCR) Benitration reactor 7 is integrated with in the burner hearth of Industrial Boiler 5, wherein, SNCR denitration reactor 6 is arranged in the position near burner hearth entrance, and SCR denitration reactor 7 is arranged in the position near furnace outlet.
It should be noted that, under SNCR refers to the effect of catalyst-free, utilize reducing agent under uniform temperature (850-1100 DEG C) by the NO in flue gas
xbe reduced to harmless nitrogen and water; SCR refers under the effect of catalyst, utilizes reducing agent under uniform temperature (290-400 DEG C) selectively by NO
xbe reduced into nitrogen.
As can be seen from the above, the reaction temperature needed for SNCR is higher than the reaction temperature needed for SCR.Based on this, the present invention arranges SNCR denitration reactor 6 and SCR denitration reactor 7 by choosing rational temperature window in burner hearth, under ensure that two kinds of Benitration reactors are all in optimal reaction temperature, thus denitration reaction carries out more thorough, reduces the discharge of nitrogen oxide to greatest extent.Here, by the flexible configuration of combined type either shallow (or degree of depth) SNCR+SCR device, effectively NO can reduced
xwhile, reduce operating cost to greatest extent.
Smoke processing system can be made up of multiple flue gas processing device.As a kind of preferred embodiment, as shown in Figure 1, smoke processing system comprises heat exchanger 8, deduster 9 and desulfurizing tower 10, the furnace outlet of Industrial Boiler 5 is communicated with the smoke inlet of heat exchanger 8, the exhanst gas outlet of heat exchanger 8 is communicated with the smoke inlet of deduster 9, the exhanst gas outlet of deduster 9 is communicated with the smoke inlet of desulfurizing tower 10, and the water inlet of heat exchanger 8 is communicated with feedwater piping, and the delivery port of heat exchanger 8 is communicated with the water inlet of Industrial Boiler 5.Here, feedwater piping refers to the pipeline for supplying cold water in Industrial Boiler 5.
In above-mentioned preferred embodiment, by arranging heat exchanger 8 between Industrial Boiler 5 and deduster 9, flue-gas temperature and the flue gas flow rate of desulfurizing tower 10 smoke inlet can be reduced on the one hand, improving desulfuration efficiency; Fume afterheat can be utilized to heat the water be supplied in Industrial Boiler 5 on the other hand, thus reduce the firing rate of boiler, reduce energy consumption.
Here, heat exchanger 8 can be various types of heat exchanger, such as ceramic heat pipe formula heat exchanger.Deduster 9 can be various types of deduster, as long as can remove the dust in flue gas.Preferably, deduster 8 is sack cleaner, and the sack cleaner of totally-enclosed structural design can avoid the secondary dust produced by pulse compression air blown control of dust to pollute.
In order to improve the desulfuration efficiency of desulfurizing tower 10, preferably, desulfurizing tower 10 is Pneumatic emulsifying desulfurizing tower.More preferably, as shown in Figure 1, this Pneumatic emulsifying desulfurizing tower has Double-Tower Structure.Pneumatic emulsifying double tower is arranged, can ensure that absorbent slurry and flue gas react more fully, effective raising desulfurization degree, the slurries of backhaul simultaneously can realize the water film type dedusting to flue gas, efficiency of dust collection can reach more than 85%, and desulfuration efficiency can be made to reach more than 98.6% with flue gas is same, high density that flyback obtains absorbs liquid layer.
Except above device; energy supplying system of the present invention also comprises the robot control system(RCS) 4 be electrically connected with burner 3, Industrial Boiler 5; this robot control system(RCS) 4 adopts PLC or DCS control system; there is complete water level, flow, temperature and pressure detecting function, Automatic Control and the protection of the aspects such as feedwater, pressure, burning can be realized.Robot control system(RCS) 4 can supply amount, blast, air quantity by on-line checkingi fuel, data acquisition and contrast computing are carried out to parameters such as boiler operatiopn load variations, flue gas oxygen content, combustion chamber drafts, adjustment air door actuating mechanism, automatic adjustment wind fuel ratio, realizes combustion system and automatically runs the automatic adjustment with load.
In order to realize the clean burning of fuel, reducing the discharge of pollutant further, preferably adopting the clean fuel of low-sulfur, low ash, low nitrogen, and add fuel combustion supporting agent, desulfurizing agent, from source, effectively control the generation of dust, sulfide, nitride.
Adopt energy supplying system of the present invention to industrial park energy supply, Air Pollutant Emission can be made to be on close level natural gas discharge standard, and specific targets are as follows:
1, more than the energy supplying system thermal efficiency >=89%, reach advanced world standards;
2, more than fuel burn-off rate >=99.5%, unburned carbon in flue dust≤3%;
3, SO
2exit concentration can be controlled in 35mg/Nm
3below;
4, NO
xexit concentration can be controlled in 50mg/Nm
3below;
5, flue dust exit concentration can be controlled in 5mg/Nm
3below.
By commercial application of the present invention, when not restructuring the use of energy, successfully can solve coal-fired and clean contradiction of discharging this development, the high-efficiency cleaning for coal resources utilizes the process route of an exploration sustainable development.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. a minimum discharge Industrial Boiler energy supplying system, it is characterized in that, this energy supplying system comprises fuel storage device (2), burner (3), Industrial Boiler (5) and smoke processing system, the discharging opening of described fuel storage device (2) is communicated with the charging aperture of described burner (3), the internal combustion chamber of described burner (3) is communicated with the burner hearth entrance of described Industrial Boiler (5), and the furnace outlet of described Industrial Boiler (5) is communicated with the smoke inlet of described smoke processing system.
2. energy supplying system according to claim 1, it is characterized in that, described Industrial Boiler (5) comprises the boiler body of the structure that forms as one, SNCR denitration reactor (6) and SCR denitration reactor (7), described SNCR denitration reactor (6) and SCR denitration reactor (7) are positioned at the burner hearth of described boiler body, described SNCR denitration reactor (6) is arranged in the position near described burner hearth entrance, and described SCR denitration reactor (7) is arranged in the position near described furnace outlet.
3. energy supplying system according to claim 1, it is characterized in that, described smoke processing system comprises heat exchanger (8), deduster (9) and desulfurizing tower (10), the furnace outlet of described Industrial Boiler (5) is communicated with the smoke inlet of described heat exchanger (8), the exhanst gas outlet of described heat exchanger (8) is communicated with the smoke inlet of described deduster (9), the exhanst gas outlet of described deduster (9) is communicated with the smoke inlet of described desulfurizing tower (10), the water inlet of described heat exchanger (8) is communicated with feedwater piping, the delivery port of described heat exchanger (8) is communicated with the water inlet of described Industrial Boiler (5).
4. energy supplying system according to claim 3, is characterized in that, described deduster (9) is sack cleaner, and described desulfurizing tower (10) is Pneumatic emulsifying desulfurizing tower.
5. energy supplying system according to claim 4, is characterized in that, described Pneumatic emulsifying desulfurizing tower has Double-Tower Structure.
6. energy supplying system according to claim 3, is characterized in that, described heat exchanger (8) is ceramic heat pipe formula heat exchanger.
7. energy supplying system according to claim 1, is characterized in that, described energy supplying system also comprises fuel delivery means (1), for described fuel storage device (2) transfer the fuel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510667037.4A CN105157050A (en) | 2015-10-15 | 2015-10-15 | Ultra-low-emission energy supply system for industrial boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510667037.4A CN105157050A (en) | 2015-10-15 | 2015-10-15 | Ultra-low-emission energy supply system for industrial boiler |
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| CN105157050A true CN105157050A (en) | 2015-12-16 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021327A (en) * | 2007-02-28 | 2007-08-22 | 哈尔滨工业大学 | Method of decreasing release of nitrogen oxide in the pulverized-coal fired boiler and its used boiler |
| CN202561728U (en) * | 2012-04-27 | 2012-11-28 | 福建永恒能源管理有限公司 | Small-and-medium scale industrial boiler system for cleaning fuel of burning powder body |
| EP2679898A1 (en) * | 2012-06-29 | 2014-01-01 | Babcock-Hitachi Kabushiki Kaisha | Denitration apparatus used for coal-fired boiler |
| CN103982904A (en) * | 2014-04-28 | 2014-08-13 | 浙江巨化热电有限公司 | Novel comprehensive flue gas treatment system and method |
| CN104100964A (en) * | 2014-07-16 | 2014-10-15 | 西安西热锅炉环保工程有限公司 | Synergistic removal system and method for realizing ultra-low emission of multiple pollutants of smoke of thermal power plant |
| CN104437082A (en) * | 2014-12-11 | 2015-03-25 | 中国华能集团清洁能源技术研究院有限公司 | Ultra-clean discharge system and method for fluidized bed boiler |
| CN205119107U (en) * | 2015-10-15 | 2016-03-30 | 亿利洁能科技有限公司 | Minimum discharge industrial boiler energy supply system |
-
2015
- 2015-10-15 CN CN201510667037.4A patent/CN105157050A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021327A (en) * | 2007-02-28 | 2007-08-22 | 哈尔滨工业大学 | Method of decreasing release of nitrogen oxide in the pulverized-coal fired boiler and its used boiler |
| CN202561728U (en) * | 2012-04-27 | 2012-11-28 | 福建永恒能源管理有限公司 | Small-and-medium scale industrial boiler system for cleaning fuel of burning powder body |
| EP2679898A1 (en) * | 2012-06-29 | 2014-01-01 | Babcock-Hitachi Kabushiki Kaisha | Denitration apparatus used for coal-fired boiler |
| CN103982904A (en) * | 2014-04-28 | 2014-08-13 | 浙江巨化热电有限公司 | Novel comprehensive flue gas treatment system and method |
| CN104100964A (en) * | 2014-07-16 | 2014-10-15 | 西安西热锅炉环保工程有限公司 | Synergistic removal system and method for realizing ultra-low emission of multiple pollutants of smoke of thermal power plant |
| CN104437082A (en) * | 2014-12-11 | 2015-03-25 | 中国华能集团清洁能源技术研究院有限公司 | Ultra-clean discharge system and method for fluidized bed boiler |
| CN205119107U (en) * | 2015-10-15 | 2016-03-30 | 亿利洁能科技有限公司 | Minimum discharge industrial boiler energy supply system |
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Application publication date: 20151216 |