CN105020731A - Micro-emission treatment method for boiler - Google Patents
Micro-emission treatment method for boiler Download PDFInfo
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- CN105020731A CN105020731A CN201510471866.5A CN201510471866A CN105020731A CN 105020731 A CN105020731 A CN 105020731A CN 201510471866 A CN201510471866 A CN 201510471866A CN 105020731 A CN105020731 A CN 105020731A
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- boiler
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention relates to a micro-emission treatment method for a boiler, and belongs to the technical field of boiler environment protection. The micro-emission treatment method for the boiler is characterized by comprising the following treatment processes that firstly, a chimney is removed, and an air blower is adopted to provide negative pressure; secondly, the waste heat boiler is adopted to reduce the temperature of smoke to below 50 DEG C from more than 200 DEG C, and waste heat is recycled; thirdly, water is taken as a medium, and a soaking and pasting technology is used for removing particles in the smoke; and fourthly, oxygen is added to the treated smoke, and the content of the oxygen in the smoke is improved to 10% to 25% to form regeneration air. The regeneration air is sent to the boiler through a device of a pipeline structure to be circularly combusted. The test with the small boiler has been done indoors, roaring flames of a combustion chamber is strong, no smoke exists on the periphery of the boiler, and the emission reduction effect is very remarkable. The method has the beneficial effects of being feasible in technology, stable in running, convenient to operate, economical, practical, good in treatment effect, wide in application range and the like.
Description
Technical field
The invention belongs to boiler environmental technology field, particularly relate to the micro-discharge treatment method of a kind of boiler.
Background technology
Current, the harmfulness of boiler smoke highlights day by day, and the quantity of the pernicious gas of discharge has threatened human health existence.The pernicious gases such as the carbon monoxide contained inside discharging waste gas, nitrogen oxide, sulfur dioxide, heavy metal particles and PM2.5 particulate cause increasing pollution to air.Its healthhazard main manifestations, for stimulating eyes, causes blood-shoot-eye illness; Stimulate nose, throat, tracheae and lung, cause chronic respiratory disease.Sulfur dioxide in boiler emission waste gas and suspended particulate substance, can increase the incidence of disease of chronic respiratory disease, infringement PFT.Sulfur dioxide in an atmosphere too high levels time, can with precipitation formed " acid rain ".Photochemical fog can make trees withered or died, a large amount of underproduction of crops; The visibility of air can be reduced, block traffic.The content of carbon monoxide is the highest, it can enter alveolar through respiratory tract, be absorbed by the blood, combine with hemoglobin, form carbonyl haemoglobin, reduce the oxygen carrying capability of blood, weaken blood to the oxygen-supplying amount of tissue, cause histanoxia, thus cause the symptoms such as headache, the serious problems such as severe one death by suffocation.
Social status quo, the needs of electric power/heating power are increasing, need the place of burning to get more and more, pollute and increase thereupon in life.Along with the progress of science and technology, pollutant is more and more tiny.In order to reduce pollution level, decreasing pollution thing discharge capacity, country has formulated law and careful and strict standard, also the discharge capacity of carbon dioxide is included in market, adopts economy to carry out iron hand regulation and control.But, deduster of all kinds in current use, dry collector, wet scrubber, barrier film deduster, bubble dust collector, packed bed scrubber, venturi scrubber, sound wave dust separator, High-gradient Magnetic inertia force precipitator, ceramic filter deduster, electric dust-catching and cleaning equipment, electrostatic wet scrubber, electronic collision machine add ammoniacal liquor desulfurizing dust-collector etc.Above-mentioned deduster is various in style, complete in specifications, all at a loss what to do to haze.Their cleaning principle is: filter, and reduces discharging.Its difficult point is the size of filter sizes, and large clean-up effect is poor, and little filter is motionless.Present Air Pollutant Discharge is the fine particle thing of Aerosol Properties, and particle diameter is little of tens nanometers, and close to the equivalent diameter of molecule, adopt membrane filtration cannot accomplish completely, when fenestra is less than 1 micron, venting capability is just very poor.Eliminate fine particle thing and pollute the difficult problem that become international.
The mankind bring into use fire from the Neolithic Age, progressively since association's burning, have not lain in flue gas all the time.What once you form a habit, it comes natural to you thinks: have burning to have discharge, have fire just to have cigarette, and flue gas is eliminated by the green vegetation on trees, meadow." reduction of discharging " becomes the hope of the public and the slogan of government.
Eliminate the impact of haze, first will deepen the understanding: have burning not have discharge, the flue gas of current combustion has caused disaster.Try hard to be: have fire smokeless.Pursue civilization burning.
Summary of the invention
The present invention provides a kind of boiler micro-discharge treatment method for solving in known technology the technical problem that exists.Substantially accomplished there is fire smokeless.
The object of this invention is to provide a kind of process, stable, easy to operate, economical and practical, treatment effeciency is high, the micro-discharge treatment method of boiler of the feature such as treatment effect is good, environmental protection, wide accommodation.
The combustion method that the present invention adopts gas confinement to recycle burns, coal-fired, that gas fired-boiler is burned waste gas, all enter a gas treatment equipment from the floss hole of boiler, after being generated as regeneration air, again from the air inlet input combustion chamber of boiler, burn together with fuel next time.
The general principle that the present invention follows burning is constant, and namely fuel, oxygen and kindling material are constant, just when originally burning, due to the reason of oxygen, enter burner hearth and accompany the inert gases such as the nitrogen of burning, changed new inert gas--waste gas into, the composition of air of originally burning is:
The assorted gas of oxygen 21%+78% nitrogen+1%
The gas that this method adopts is:
21% oxygen+79% waste gas
Oxygen wherein participates in burning, and waste gas is the same with nitrogen, be all inertia accompany burning gas, be all also oxidation reaction when not participating in burning, so mechanism and the condition of burning all do not change.
The technical scheme that the micro-discharge treatment method of boiler of the present invention is taked is:
The micro-discharge treatment method of a kind of boiler, is characterized in: the micro-discharge treatment method of boiler comprises following processing procedure:
(1) discharging waste gas recovery waste heat
Boiler emission waste gas carries out heat exchange through heat exchanger and the gas entering boiler, and waste gas outlet carries out waste heat recovery through the waste heat boiler installed, and the thermal efficiency improving boiler is reduced to less than 50 degree EGT;
(2) particle in boiler rinsing discharging waste gas
Waste gas after cooling, through the cleaning device of pipeline configuration, washes the particle in flue gas off; Adopt water as cleansing medium, recirculated water uses, and cleans waste gas;
(3) regeneration air is generated
Waste gas after cleaning, all enters regeneration air device, with appropriate oxygen mix, generates regeneration air, stored in regeneration air storage tank;
(4) gas of combustion system recycles
Boiler emission exhaust outlet is closed with air inlet and is connected, through the regeneration air that step poly-(1), step poly-(2) and step poly-(3) obtain, carry out after heat exchange raising temperature by pipeline through over-heat-exchanger, flow to boiler from the air inlet of boiler, realize combustion system gas and recycle.
The micro-discharge treatment method of boiler of the present invention can also take following technical scheme:
The micro-discharge treatment method of described boiler, is characterized in: regeneration air is delivered to boiler by air blast and carries out systemic circulation burning use.
The micro-discharge treatment method of described boiler, is characterized in: cleaning device is the pipe washer of long-channel formula, and the pipe washer of long-channel formula is connected to reservoir pond, and the particle washed off sinks in reservoir pond, and water for cleaning recycles.
The micro-discharge treatment method of described boiler, is characterized in: the waste gas after cleaning mixes with oxygen by regeneration air device, generates and can substitute the regeneration air of air for burning; The oxygen that regeneration air device needs, is provided by independent oxygen generating station.
The advantage that the present invention has and good effect are:
The micro-discharge treatment method of boiler is owing to have employed the brand-new technical scheme of the present invention, compared with prior art, the combustion method that the present invention adopts gas to circulate burns, coal-fired, that gas fired-boiler is burned waste gas, from floss hole by a gas treatment equipment, allocate oxygen into, again send into combustion chamber from air inlet and burn together with fuel next time; Effectively can realize the discharge reducing pernicious gas.The present invention has process, operates steadily, easy to operate, economical and practical, treatment effeciency is high, treatment effect is good, environmental protection, the obviously advantage such as wide accommodation.
Accompanying drawing explanation
Fig. 1 is the micro-discharge treatment method process flow diagram of boiler of the present invention.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Accompanying drawings 1.
Embodiment 1
The micro-discharge treatment method of a kind of boiler, comprises following processing procedure:
1. discharging waste gas recovery waste heat
Boiler emission waste gas carries out heat exchange through heat exchanger and the gas entering boiler, and waste gas outlet carries out waste heat recovery through the waste heat boiler installed, and improves the thermal efficiency of boiler, the temperature of waste gas is reduced to less than 50 degree;
2. the particle in boiler rinsing discharging waste gas
Waste gas after cooling, through the cleaning device of pipeline configuration, washes the particle in flue gas off; Adopt water as cleansing medium, waste gas is cleaned; Cleaning device is the pipe washer of long-channel formula, and the pipe washer of long-channel formula is connected to reservoir pond, and the particle washed off sinks in reservoir pond, and water for cleaning recycles.
3. generate regeneration air
Waste gas after cleaning, all enters regeneration air device; Waste gas after cleaning mixes with oxygen by regeneration air device, generates and can substitute the regeneration air of air for burning; The oxygen that regeneration air device needs, is provided by independent oxygen generating station; Generate regeneration air, stored in regeneration air storage tank;
4. the gas of combustion system recycles
Boiler emission exhaust outlet is closed with air inlet and is connected, gather 1 through step, walk poly-2 and poly-3 regeneration airs obtained of step, carried out after heat exchange raising temperature through over-heat-exchanger by pipeline, regeneration air flows to boiler by air blast from the air inlet of boiler, realizes systemic circulation burning.
Specific embodiment of the invention process and outstanding feature thereof and remarkable result:
The micro-discharge treatment method of boiler of the present invention comprises following processing procedure:
1. remove chimney, provide negative pressure with air blast.
2. recovery waste heat, provides hot water, increases economic benefit
Install waste heat boiler, recovery waste heat at the waste gas outlet of heat exchanger, the thermal efficiency improving boiler is reduced to less than 50 degree EGT.
3. the particle in boiler rinsing discharging waste gas
Waste gas after cooling, through the cleaning device of pipeline configuration, washes the particle in flue gas off.Adopt water as cleansing medium, water circulation uses.During the cleaning of boiler emission waste gas, have employed the cleaning device of pipeline configuration, be provided with atomizer in the tubular deduster of long-channel formula, fully contact with boiler emission waste gas, realize cleaning object.
4. generate regeneration air
Waste gas after cleaning, all enters regeneration air device, with appropriate oxygen mix, generates regeneration air, and stored in regeneration air storage tank, through the air inlet of Cemented filling to boiler, passage in transit heat exchanger enters boiler after carrying out heat exchange raising temperature.
5. the gas of combustion system recycles
The exhaust outlet of boiler and air inlet are closed and is connected, connects and accomplish No leakage, realize completely closed, in the overall process of boiler combustion, (ignition procedures, smooth combustion stage and extinguishing process) does not have fume emission.Do not use fresh air, maximal degree reduce the pollution of boiler to air.
The combustion method that the present embodiment adopts emission gases to recycle, processes the waste gas of boiler combustion, allocates oxygen into, again enter combustion chamber and burn together with fuel next time; Effectively can carry out the discharge reducing pernicious gas; There is described process, easy to operate, economical and practical, treatment effeciency is high, the good effect such as treatment effect is good, environmental protection, wide accommodation.
Claims (4)
1. the micro-discharge treatment method of boiler, is characterized in that: the micro-discharge treatment method of boiler comprises following processing procedure:
(1) discharging waste gas recovery waste heat
Boiler emission waste gas carries out heat exchange through heat exchanger and the gas entering boiler, and waste gas outlet carries out waste heat recovery through the waste heat boiler installed, and the thermal efficiency improving boiler is reduced to less than 50 degree EGT;
(2) particle in boiler rinsing discharging waste gas
Waste gas after cooling, through the cleaning device of pipeline configuration, washes the particle in flue gas off; Adopt water as cleansing medium, water circulation uses, and cleans waste gas;
(3) regeneration air is generated
Waste gas after cleaning, all enters regeneration air device, with appropriate oxygen mix, generates regeneration air, stored in regeneration air storage tank;
(4) air of combustion system recycles
Boiler emission exhaust outlet is closed with air inlet and is connected, through the regeneration air that step poly-(1), step poly-(2) and step poly-(3) obtain, carry out after heat exchange raising temperature by pipeline through over-heat-exchanger, flow to boiler from the air inlet of boiler, the air realizing combustion system recycles.
2. the micro-discharge treatment method of boiler according to claim 1, is characterized in that: regeneration air is delivered to boiler by air blast to carry out combustion system and recycle.
3. the micro-discharge treatment method of boiler according to claim 1, it is characterized in that: cleaning device is the pipe washer of long-channel formula, the pipe washer of long-channel formula is connected to reservoir pond, and the particle washed off sinks in reservoir pond, and water for cleaning recycles.
4. the micro-discharge treatment method of boiler according to claim 1, is characterized in that: the waste gas after cleaning mixes with oxygen by regeneration air device, generates and can substitute the regeneration air of air for burning; The oxygen that regeneration air device needs, is provided by independent oxygen generating station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510471866.5A CN105020731A (en) | 2015-08-05 | 2015-08-05 | Micro-emission treatment method for boiler |
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| CN201510471866.5A CN105020731A (en) | 2015-08-05 | 2015-08-05 | Micro-emission treatment method for boiler |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313102A1 (en) * | 1993-04-22 | 1994-10-27 | Sbw Sonderabfallentsorgung Bad | Method of reducing the amount of exhaust gas to eliminate NO¶x¶ emissions from combustion, preferably from waste incineration |
| CN1299303A (en) * | 1998-04-06 | 2001-06-13 | 米内吉有限公司 | Closed-cycle waste combustion |
| KR100689788B1 (en) * | 2005-07-19 | 2007-03-09 | (주)한국환경기술 | An incineration method of waste and its device, in that waste gas from incinerator is recycled, mixed with oxygen and applied for burning |
| CN102374525A (en) * | 2010-08-12 | 2012-03-14 | 上海尚实能源科技有限公司 | Oxygen-supplementation-type fume gas circulation combustion device |
| CN102493857A (en) * | 2011-12-01 | 2012-06-13 | 林道宣 | Zero tail gas or waste gas emission device |
-
2015
- 2015-08-05 CN CN201510471866.5A patent/CN105020731A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313102A1 (en) * | 1993-04-22 | 1994-10-27 | Sbw Sonderabfallentsorgung Bad | Method of reducing the amount of exhaust gas to eliminate NO¶x¶ emissions from combustion, preferably from waste incineration |
| CN1299303A (en) * | 1998-04-06 | 2001-06-13 | 米内吉有限公司 | Closed-cycle waste combustion |
| KR100689788B1 (en) * | 2005-07-19 | 2007-03-09 | (주)한국환경기술 | An incineration method of waste and its device, in that waste gas from incinerator is recycled, mixed with oxygen and applied for burning |
| CN102374525A (en) * | 2010-08-12 | 2012-03-14 | 上海尚实能源科技有限公司 | Oxygen-supplementation-type fume gas circulation combustion device |
| CN102493857A (en) * | 2011-12-01 | 2012-06-13 | 林道宣 | Zero tail gas or waste gas emission device |
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Application publication date: 20151104 |