61ton bagasse fired hot water boiler

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.

Upgrading an 80% efficient boiler to our 96% efficient WNS and SZS boiler or 94-95% efficient gas boiler can provide about a 15-20% savings in energy costs. This can equal one or more months of heating fuel costs for every year of the boiler’s operation.

The condensed water is not just only one component of water, which will contain a lot of impurities of the fuel combustion, such as nitrogen oxides, sulfur oxides, etc., these impurities are dissolved in the condensed water, if returned to the flue, the tube wall would cause great corrosion, affecting the life of the boiler.

Technical characteristics premix condensing boiler furnace condensing premix premix combustion characteristic technical features: refers to a gas burner thoroughly mixed with enough air prior to the burner, it is no longer necessary to supply combustion air to the combustion process . 1) the combustion flame characteristics: flame propagation speed, high strength hot combustion chamber volume, generally up to 28 ~ 56x103kW / m2 or more, the excess air coefficient is very small, typically α = 1.05 ~ 1.2, the combustion temperature is high, low nitrogen oxides emissions. But poor flame stability, prone to tempering, tempering is prevented, so that as the gas flow velocity to be uniform field, to ensure that the air flow velocity at each point are greater than the flame propagation speed at the lowest combustion load. At the same time, a uniform air distribution surface also ensures the uniformity of the burner flame to avoid flame on the burner surface is too long, contact with heat exchanger surfaces resulting in incomplete combustion. 2) premix combustion mode effective to reduce the emission of pollutants, such as: the reduction of nitrogen oxides, carbon monoxide emissions. Features condensing heat exchanger of the main characteristics of the entire cast aluminum water-cooled design, the combustion chamber is surrounded by watercourses, effectively absorb heat, cooling the flue gas. The thermal conductivity of aluminum is 8 times that of stainless steel (aluminum: 130W / m ℃, stainless steel:.. 16.2W / m ℃), it gives greater leeway in the design of the combustion chamber and waterways. The corrosion resistance: aluminum is a reactive metal, under natural conditions, the aluminum oxide surface layer can be formed of a dense, acidic corrosion can be effectively prevented from corrosion and oxygen. China's abundant reserves of aluminum, lack of demand, leading to low prices, low melting point of aluminum, with a high fluidity at high temperature casting, casting and machining good performance. Flue gas top-down, bottom-up flow. Aluminum heat exchanger in a combustion chamber with a needle-like protrusions, grooves waterways with a heat exchanger, to optimize heat transfer effect, and effectively increase the heat load of the heat exchanger unit.

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