CN115751348A - Combustion method for reducing exhaust emission - Google Patents
Combustion method for reducing exhaust emission Download PDFInfo
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- CN115751348A CN115751348A CN202211067846.8A CN202211067846A CN115751348A CN 115751348 A CN115751348 A CN 115751348A CN 202211067846 A CN202211067846 A CN 202211067846A CN 115751348 A CN115751348 A CN 115751348A
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- boiler
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- liquid fuel
- reducing exhaust
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Abstract
A combustion method for reducing exhaust gas emission includes such steps as providing a liquid fuel in a boiler, and burning the liquid fuel at ordinary pressure until the steam pressure in the boiler is 3Kg/cm 2 (ii) a Adding a combustion improver into the boiler, continuing to combust in the boiler, and maintaining the steam pressure of the boiler at 3-5Kg/cm 2 (ii) a And the steam pressure in the boiler is between 3 and 5Kg/cm 2 The boiler is then heated with a medium and the exhaust emissions of the boiler are measured.
Description
Technical Field
The invention relates to the field of fuels, in particular to a combustion method for reducing exhaust emission, which is suitable for a boiler.
Background
A boiler is one of important heat energy supply devices. Boilers are used in the industries of electricity, machinery, metallurgy, chemical industry, textile, paper making, food and the like, and industrial and civil heating.
The boiler mainly uses the process of burning fuel to stably and continuously convert the chemical energy in the fuel into heat energy, and uses the heat energy to heat water or heat medium for use as a heat source for drying or heating, or as a power source.
However, although the use of boilers brings convenience to plant operations, it is accompanied by environmental problems. For example, when the combustion of fuel is incomplete, exhaust gases such as sulfur oxide (SOx), nitrogen oxide (NOx), carbon monoxide (CO) and carbon dioxide (CO 2) emitted from boilers increase the greenhouse effect to cause global warming, which causes serious environmental pollution, and the ultra-fine suspended particles (PM 2.5) generated after combustion degrade the air quality and harm human health.
Therefore, it is desirable to develop a combustion method that is more environmentally friendly and has lower exhaust emissions.
Disclosure of Invention
Accordingly, the present invention provides a combustion method for reducing exhaust emission suitable for a boiler, which is an environmentally friendly combustion method with lower exhaust emission and public safety.
According to one embodiment, the combustion method for reducing exhaust emissions of the present invention comprises the following steps:
providing a liquid fuel in a boiler, and burning the liquid fuel under normal pressure until the steam pressure of the boiler reaches 3Kg/cm 2 ；
Adding a combustion improver into the boiler, continuing to combust in the boiler, and maintaining the steam pressure of the boiler at 3-5Kg/cm 2 (ii) a And
the steam pressure in the boiler is between 3 and 5Kg/cm 2 The boiler is then heated with a medium and the exhaust gas from the boiler is measured.
In one embodiment, the liquid fuel is a low sulfur fuel oil.
In one embodiment, the combustion improver is steam.
In one embodiment, the low sulfur fuel oil is a fuel oil comprising vegetable oils such as palm oil.
In one embodiment, the liquid fuel is provided at a rate of between 100 and 120 liters per hour and the combustion improver is provided at a rate of between 30 and 40 kilograms per hour.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 illustrates a combustion method for reducing exhaust emissions, in accordance with an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to table one, the emission standard of air pollutants for boilers to be applied to new boilers and existing boilers in taiwan from 7/1/2020 is shown.
TABLE I emission Standard of air pollutants of boiler
| Air pollutants | Discharge pipe standard |
| Particulate contaminants | Thirty mg/Nm 3 |
| Sulfur oxides | Fifty ppm of |
| Nitrogen oxides | One hundred ppm |
Referring to fig. 1, a combustion method for reducing exhaust emissions is shown according to an embodiment of the present invention. As shown in FIG. 1, the combustion method for reducing exhaust gas emission of the present invention is suitable for combustion use in a boiler, and comprises the steps of:
step (ii) ofS10: providing a liquid fuel in a boiler, and burning the liquid fuel under normal pressure until the steam pressure of the boiler reaches 3Kg/cm 2 ；
S20, adding a combustion improver into the boiler, continuing to combust in the boiler, and maintaining the steam pressure of the boiler at 3-5Kg/cm 2 (ii) a And
step S30, the steam pressure of the boiler is between 3 and 5Kg/cm 2 The boiler is then heated by a medium and the exhaust gas from the boiler is measured.
In one embodiment, the liquid fuel of the present invention is a low sulfur fuel oil, the combustion improver is steam, and the medium is water. Preferably, the low sulfur fuel oil is a fuel oil comprising vegetable oils such as palm oil.
In one embodiment, in step S10, the liquid fuel is provided at a rate between 100 and 120 liters/hour, and in step S20, the combustion improver is provided at a rate between 30 and 40 kilograms/hour.
In one embodiment, the liquid fuel is used for combustion to heat the medium, and the combustion improver is used for reducing the flame temperature in the boiler, thereby reducing the generation of sulfur oxides (SOx) and nitrogen oxides (NOx) during combustion.
The following description is provided as an example of the combustion method of the present invention, and those skilled in the art will readily understand the advantages and effects of the present invention without departing from the spirit of the present invention.
Referring to the second, third and fourth tables, the data of the pollutants in the flue gas that is not treated by the flue gas treatment equipment (e.g. scrubber) is shown in the following examples 1-2, respectively, measured by the portable detector when the fuel oil of examples 1-2 is combusted by using the 6 ton horizontal flue tube boiler including the low pressure oil pump and the burner in the combustion method of the present invention.
The types of the used equipment are as follows:
1.6 ton horizontal smoke tube boiler: hump full boiler production;
2. an oil pump: producing by a Heyongxing mechanical factory;
3. portable detecting instrument: manufactured by KIMO, france (model KGAZ 310).
The fuel composition used had the following components:
1. special low sulfur fuel oil: purchased from oil, inc, taiwan; and
2. industrial low sulfur fuel oil: purchased from the International energy resources Co., ltd (oil code UNI-65527864).
Example 1:
in this example, the combustion process shown in FIG. 1 was performed using the 6-ton horizontal-flue tube boiler and the special low-sulfur fuel oil was provided as a liquid fuel at a rate of 110 liters/hr, the combustion improver was provided at a rate of 30 kg/hr, and the air pollutants data of Table two below were measured by the portable detector.
A second table:
| air pollutant project | Data of |
| Sulfur oxides | 19ppm |
| Nitrogen oxides | 45ppm |
Example 2:
in this example, the combustion method shown in FIG. 1 was performed using the 6-ton horizontal-flue tube boiler, and the industrial low-sulfur fuel oil was provided as a liquid fuel at a rate of 110 liters/hr, the combustion improver was provided at a rate of 30 kg/hr, and the airborne pollutants in Table two below were measured by the portable detector.
Table three:
| air pollutant project | Data of |
| Sulfur oxides | 0ppm |
| Nitrogen oxides | 30ppm |
As can be seen from the data of the exhaust emissions in the second to third tables, the combustion method of the present invention provides a combustion method suitable for reducing the exhaust emissions, which can reduce the generation of air pollutants such as sulfur oxides (SOx) and nitrogen oxides (NOx) after combustion, so that the data for measuring sulfur oxides (SOx) and nitrogen oxides (NOx) in the exhaust emissions can meet the latest boiler air pollutant emission standards published in taiwan. Therefore, the problems of excessive air pollutants and ultra-discharge of ultrafine suspended particles in the traditional boiler operation method can be solved, and the discharge amount of black smoke discharge after combustion is reduced.
In addition, the combustion method provided by the invention is suitable for the existing boiler, does not need to additionally build new equipment or modify the existing boiler, thereby avoiding the problems of careless use, natural gas leakage and other extra labor safety possibly encountered by the building of a new pipeline or a storage tank when a boiler system is modified to adopt a novel fuel with low flammable, explosive and flashing points such as natural gas, and further providing a safe, convenient and economic combustion method for reducing the exhaust emission by a factory to newly build a boiler or using the existing boiler.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (5)
1. A combustion method for reducing exhaust emissions, comprising the steps of:
providing a liquid fuel in a boiler, and burning the liquid fuel under normal pressure until the steam pressure of the boiler reaches 3Kg/cm 2 ；
Adding a combustion improver into the boiler, continuing to combust in the boiler, and maintaining the steam pressure of the boiler at 3-5Kg/cm 2 (ii) a And
the steam pressure in the boiler is between 3 and 5Kg/cm 2 The boiler is then heated by a medium and the exhaust gas from the boiler is measured.
2. The combustion method for reducing exhaust gas emissions according to claim 1, wherein the liquid fuel is a low-sulfur fuel oil.
3. The combustion method for reducing exhaust gas emissions according to claim 2, wherein the low-sulfur fuel oil is a fuel oil comprising palm oil.
4. The combustion method for reducing exhaust emissions according to claim 1, wherein the combustion improver is steam.
5. The method of claim 1, wherein the liquid fuel is provided at a rate of between 100 and 120 liters per hour and the combustion improver is provided at a rate of between 30 and 40 kilograms per hour.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW110132666A TWI779813B (en) | 2021-09-02 | 2021-09-02 | Combustion method for reducing exhaust gas contents |
| TW110132666 | 2021-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115751348A true CN115751348A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211067846.8A Pending CN115751348A (en) | 2021-09-02 | 2022-09-01 | Combustion method for reducing exhaust emission |
Country Status (2)
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| CN (1) | CN115751348A (en) |
| TW (1) | TWI779813B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0821603D0 (en) * | 2008-11-26 | 2008-12-31 | Innospec Ltd | Improvements in or relating to fuel additive compositions |
| CN105805729B (en) * | 2014-12-31 | 2018-09-21 | 烟台龙源电力技术股份有限公司 | Low nox combustion method and low nox combustion system |
| CN105202537B (en) * | 2015-10-22 | 2018-03-27 | 耿烽 | A kind of combustion system and combustion method |
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2021
- 2021-09-02 TW TW110132666A patent/TWI779813B/en active
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2022
- 2022-09-01 CN CN202211067846.8A patent/CN115751348A/en active Pending
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| Publication number | Publication date |
|---|---|
| TWI779813B (en) | 2022-10-01 |
| TW202311664A (en) | 2023-03-16 |
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