The second reason is that it can reduce the frequency of replacing heating equipment in modern people. At present, the raw materials used in common industrial boilers ltd products in the market are mostly copper, which is easy to be corroded and replaced by a series of faults after long-term use. The condensing boiler is made of stainless steel, and even in the process of operation, the contact with water vapor will not affect the quality of the boiler, so that the frequency of replacing heating equipment can be controlled inconspicuously.
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25 counter-measures in preventing over-pressure drum industrial boilers ltd overtemperature provisions What? (1) prevent boiler water shortages and over-temperature overpressure operation, non-operation (2) in the case of low water table quantities (refer to correctly indicate the water level of the water table number), participated in the boiler safety valve splitting the power peaking, operating procedures should develop appropriate technical measures. Press peaking boiler design, the peaking should match the performance of the steam turbine performance of the non-peaking boiler design, its lower limit should hydrodynamic Peak load calculation, test and stability test to determine the combustion, and to develop appropriate anti-accident measures. (3) evaporating section of the once-through boiler, a separator, superheater, reheater outlet conduit wall temperature and the like should be intact measuring point to monitor the temperature difference between the tubes, to prevent overtemperature squib. (4) boiler overpressure valve hydrostatic testing and tuning should be carried out strictly in accordance with regulations. (5) high-capacity boiler overpressure safety valve hot water pressure test and calibration work should develop special safety precautions, to prevent too fast or boost pressure, steam temperature and over-temperature overpressure caused by runaway phenomenon. (6) the overpressure in the boiler and the hot pressure test valve tuning prohibited non test personnel at the testing site.
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.