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sawdust briquette fired hot water boiler

Some time ago we learned that the Xinxiang City, Henan Province is located in order to further deepen the pollution gas boiler, reducing nitrogen oxide emissions, improving air quality, we launched a "campaign of Xinxiang City, pollution prevention three-year action plan implementation (2018-2020 Year) "(hereinafter referred to as" an embodiment "), as follows.

First, the implementation of the total coal consumption control

As of 2020, the city's coal consumption control at 13.04 million tons, the proportion of energy consumption control in less than 70%. Coal-fired power plants and strengthen the chemical industry, nonferrous metals, building materials and other key industries of coal consumption control, under the premise of protecting the power system security and stable operation of non-fossil energy generation within the city full consumptive, and actively absorb external calls.

Further promote high-pollution fuel combustion zone ban construction. Gradually expand Ⅲ fuels (coal and its products, including clean coal) combustion zone ban range, central heating and complete cleaning of coal bulk region designated as an alternative class Ⅲ high-pollution fuel combustion zone ban. Increase the combustion zone ban supervision, prohibition of bulk coal sales and hoarding, and severely punish violations of the ban management requirements combustion zone, the region has been completed to prevent bulk coal burning complex.

Second, comprehensive remediation coal-fired boilers

Adhere to the "source of governance, a total ban, focused, step forward" principle, and comprehensively promote the elimination of scattered coal-fired boiler (kiln) coal-fired furnaces and other industrial facilities, the renovation work. Before the end of December 2019, basically out of Xinxiang City, the administrative area of ​​35 steam tons / hour and coal-fired boilers, coal-fired boilers essential to retain, to achieve ultra-low emissions must be stabilized.

Third, actively develop renewable energy

Regions and the development of renewable energy, constantly optimize energy consumption structure, and gradually improve the urban proportion of clean energy use, and build a clean energy-based energy security system. By 2020, the proportion of non-fossil fuels in total energy consumption in the city of more than 7%.

Fourth, to enhance the level of natural gas utilization

Good job of marketing system storage capacity for natural gas. And strive to 2020, the proportion of total energy consumption of natural gas accounted for 10%. Strengthen joint cooperation with the West-East pipeline in northern branch and other existing, fully-use planning Sinopec Xinjiang coal gas "new Guangdong and Zhejiang," and so on through the pipeline from the city's strengths to enhance the capacity of natural gas reserves, counties 2020 (city), District of forming at least not less than three days of emergency reserve capacity average daily gas consumption to protect the administrative district, city gas companies and large users uninterruptible form of not less than 5% of its annual gas consumption of the emergency gas storage capacity.

Fifth, the effective promotion of clean heating

Continue to promote clean heating pilot city construction work. City and county built-up areas to development of central heating based, improvement and transformation of the heating pipe network, a substantial increase in the rate of central heating, the first to achieve clean heating rate of 100%.

Sixth, vigorously promote the construction of central heating

Industrial central heating full coverage. Accelerate the integration of industrial parks (industrial parks) existing heat points, to promote the heating pipe network construction, the gradual elimination of the industrial park (industrial parks) central heating blind spots. Existing types of industrial parks and industrial clusters should be implemented cogeneration or Central Heating, industrial enterprises into the central heating, decentralized heating phase out the industrial park to ensure the realization of "a zone a heat source."

Boiler excess air ratio increases, why steam temperature rises to follow? Excess air ratio increases boiler (originally assumed optimum excess air ratio), the temperature drop in the furnace, the heat radiation wall absorption reduction, the furnace exit gas temperature decreased slightly. Since the magnitude of the amount of smoke increases, the speed increase of smoke, the heat transfer coefficient of heat transfer temperature difference is greater than the rate of increase is reduced, so that the increase in heat absorption of the superheater. Since the increase in the amount of exhaust gas temperature and flue gas, q2 is increased, reducing the efficiency of the boiler, in the case where the same amount of fuel. Reducing evaporation, and therefore, the steam temperature rise. Generally, the excess air coefficient of 0.1 for each increase, steam temperature rise 8 ~ 1O ℃.

Why do we need to clean gas boilers due in most areas are located in the temperate zone so every year for a long time inside the weather temperature is very low. So many areas will be carried out through the winter heating boiler and gas boiler work which is a common species. In order to ensure the normal work of so many winter heating heating companies regularly scheduled cleaning operation gas boiler, then why the need for gas-fired boiler specifically for cleaning? First, to prevent scale build gas-fired boiler in the use of the process requires a great deal of water and is well known to heat the water can produce scale. This is because the water contains calcium sulfate is decomposed in a high temperature state and combined with the scale forming calcium and magnesium ions. Boiler if a large accumulation of scale it is very likely to produce different degrees of corrosion on the bottom of the boiler. Second, the importance of improving the safety of gas-fired boiler boiler decision will greatly affect the safety indicators gas boiler in the production process can not be carried out if necessary cleaning work inside the boiler words. This is mainly because there is no cleaning of the scale, then those will lead to sustained increase in temperature of the boiler water wall, which greatly increases the risk factor of the burst pipe water wall which directly affect the safety of operation of the boiler. Third, reduce resource waste gas boiler applications of a wide range of use and therefore the number of gas boiler lot. But once the clean-up can not keep up caused by the accumulation of scale so the boiler thermal effects will be greatly reduced. Under this situation in order to ensure adequate heating capacity then only continue to raise the temperature of the fire, which is increase fuel consumption resulting in a waste of resources. Overall thoroughly integrated cleaning work for normal operation of the gas boiler has played a critical sense, one of the main reasons is divided into three aspects namely cleaning work to reduce the internal boiler scale buildup, but also can greatly improve run gas boiler safety and reduce resource consumption, waste of resources to put an end to the situation.

S: double drum. There are two drum boiler, goes under the distribution structure.

Z: vertical type. Using the "D" type arrangement, arranged longitudinally down drum, as the flue gas flow partition Wall full mode, the left side of the boiler convective tube bank is arranged.

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