In order to promote technological progress and sustainable development, improve environmental quality and protect public health, recently, the Liaoning Provincial People's Government of air pollutants for coal-fired power plants developed specific criteria (hereinafter referred to as the "standard"). This is the first time a set of policies Liaoning Province for air pollutant coal power plant.
"Standard" provides for pollutant discharge limits, surveillance and monitoring requirements within the jurisdiction of coal-fired power plant in Liaoning Province atmospheric and fugitive emissions control requirements. Since the implementation of the standards, air pollutant emissions coal-fired power plants all within the jurisdiction of Liaoning Province will be executed in accordance with the provisions of this standard.
2, since January 1, 2019, the emission limits of existing single output and more than 300MW generating units supporting the provision of a coal-fired power generation boilers execution table.
3, since 1 December 2020, the emission limits of existing single output 300MW generating units supporting the coal-fired power generation boilers and other power boilers as specified in Table 1 execution.
Sampling the exhaust gas (1) power plant, to be carried out in a predetermined position in accordance with the type of monitor emissions monitoring contaminants. In the discharge of pollutants should be set up to monitor the position of long-term monitoring holes, sampling platform and related facilities. When the sampling platform height from the ground greater than 40m, should be set by a lift platforms, lifts or other convenient and safe facilities. No elevator or elevator building coal-fired power plants, when the sampling platform height from the ground greater than 20m, should be set up safe, convenient electric monitoring equipment hoisting facilities.
Composition structure (3) continuous monitoring system atmospheric pollutants, technical requirements, test items, test methods and installation, commissioning, acceptance, operation management, data processing, etc. according to the provisions of HJ75 and HJ76.
(5) continuous monitoring system meter of air pollutants detection sensitivity, detection limit, and should meet the range of low concentrations of pollutant emission monitoring technical requirements, the concentration of nitrogen oxides include nitric oxide (NO) and nitrogen dioxide (of NO2), Determination of nitric oxide only has the ability to configure the analytical device of nitrogen oxides NO2 / NO converter.
(7) for coal-fired power boiler emissions of air pollutants sampling monitoring, sampling frequency, the sampling time and the operating load requirements,, HJ / T397 and related predetermined low exhaust gas concentration monitoring is performed according to specifications GB / T16157.
(9) shall be in accordance with the provisions of the enterprise "Environmental Monitoring and Management Measures" and the HJ819, HJ820 requirements of pollutant emissions and its impact on environmental quality around to conduct their own surveillance, monitoring and save the original records, public information.
Determination of air pollutants fired power plant analysis are shown in Table 2. After the release of the present embodiment national standard method of monitoring criteria pollutants, such as applicability to meet the requirements, the same applies to the determination of the corresponding standard contaminants present.
2, responsible for overseeing the management of this standard by the executive authorities and the standardization of administrative departments above the county level environmental protection. The results of the environmental protection departments at all levels and other relevant units in the enterprise supervision and checks can be instantly sampled or monitored the scene as determining whether acts of sewage meet emissions standards based on the relevant environmental protection and the implementation of management measures.
The transformation of low nitrogen 8t condensing boiler moldavia should be noted that what matters for retrofitting low nitrogen boiler should be noted that what? Of nitrogen oxide emissions is large, complex sources, environmental problems caused by acid deposition, fine particles, ozone, nitrogen oxides and analysis of contamination status must be further strengthened. If you do not take further measures to reduce emissions, with the United States and the United States to speed up economic development, population growth and urbanization, nitrogen oxide emissions will continue to grow in China in the future. Based on current trends, by 2030, emissions will reach 35.4x106 tonnes, will inevitably cause serious environmental impacts. Therefore, we must effectively enhance the emission control of nitrogen oxides. From this we can see that low nitrogen boiler is imperative! A check device to check for low NOX combustion gas before commissioning is in place, the gas pipeline flow is clean, whether the valve is open. There is a burner pipe leaks, reasonable pipeline installation. Discharging vent pipe valve from the foregoing, to ensure that no mixing of the air duct, and the exhaust pipe should be connected to the outdoor. Second, stable combustion and combustion of homeostasis Remember, combustion adjustment is the basis for all of the low nitrogen burner adjustment, as long as guaranteed under any changes in operating conditions of combustion stability and combustion of dynamic equilibrium, to burn steam temperature influence is even greater. Since the steam temperature is a sign flue gas heat value balance between the steam and heat absorption, this can be maintained as long as the dynamic balance, steam temperature can be kept stable. Third, the level of flame boiler boiler central flame center is also an important factor in high impact low-temperature steam. In the high temperature steam operation, the amount of coal combustor exhaust can be reduced, the amount of the lower stage burner of coal may be increased, and vice versa. Running low nitrogen burners, it should also be noted effect of different combinations of temperature steam mill. Steam at a low temperature exhaust composition regulating a large margin, the combination of the high temperature exhaust temperature adjusting stage so small margin overheat. It should be strengthened and soot blowing air distribution according to the situation.
Burner assembly design choices 8t condensing boiler moldavia burner already developed into a general burner, the burner mentioned three words we do know so the boiler burner and employment is related to fire, the fire more time in on helping us, but not only each careful it will become your enemy. ?? So how can you take advantage of warranty using the boiler burner for the moment is to use it and design staff at the time the design of the burner design it is regrettable that we take a look: for precision temperature conditions of the mobilization method the fishing gear, you may wish to use some fire in Sec manipulate manipulate fire, line by line, to mobilize the burner. If the use of heavy fuel oil atomization , Shen oil burner atomizer machine may corroboration fuel burner, the burner region F medium nebulizer, geographical differences in the situation, the situation includes a differential difference burner the viscosity of the condition to be employed. When the heat value of the gas used as the fuel gas pressure, as many thermal differential value of the types of gas, the pressure is not and will not, so the manufacturers want to use in a combustor using a fuel burner stated categories, the number of heat value, how poor the pressure to adopt appropriate burner to prevent the inaccurate use of crisis. Furnace temperature and pressure using burners, burner manufacturer's forced to declare himself set which type setting, the furnace pressure is low is still active, multi-poor pressure, temperature arrived tall. Given the furnace temperature category.
Four coal-fired 8t condensing boiler moldavias precautions to meet a variety of fossil fuels and natural gas sectors of production, often require boiler, the general common is to transform into a coal-fired furnace gas-fired boiler, to change the high fuel costs of coal on the environment cause serious pollution problems, specific issues unique boiler is not a small project, you need to pay attention to a good close links with each transformation in order to avoid failure of transformation, on boiler should be noted that we have to understand the following description. 1, the original boiler demolition work; boiler before carrying out the original host and auxiliary boilers need to be demolished, concrete demolition work carried out by professional staff, in order to more quickly complete the demolition work with but also to prevent the demolition process in the event of any accident; 2, note that pressure capacity of the boiler; small boiler into the gas by the coal-fired, also changed the original negative and positive pressure combustion burner, the process you need to pay special attention throughout the furnace wall the structure and sealing, the sealing function, it might cause the boiler after the transformation could not withstand the pressure and accidents; 3, furnace renovation precautions; when in many cases will change the gas burner, because the fuel mist of poor or incomplete combustion of the fuel gas remaining in the furnace a little mistake will cause fire or explosion, it is carried out after completion of the transformation for an explosion vent installed in an appropriate position to prevent the explosion, while additional ignition flame protection means after the boiler guarantee safe operation; 4, after the transformation of the test; after the completion of high-quality boiler transformation, but also the need for reuse Sophisticated testing to confirm their safety, commonly used test method is boiler pressure after the transformation of high-pressure test, and finally pass a test meet the standard may be considered completed after the entire transformation boilers. Caution visible through major transformation over the course of gas boilers, boiler reconstruction requires not only technical but also need to meet the relevant standards in order to ensure more successful boiler and can be smoothly carried out using, of course, in the transformation of the former users need to analyze the structure of the entire boiler study, confirming boiler renovation project can be re-introduced in order to avoid unnecessary waste.