93 T steam boilers

As early as abroad in the 1970s had developed exhaust gas temperature is 40 ~ 50 ℃ condensing gas boiler. The so-called condensing gas boiler is to use a condensing heat exchanger in the exhaust gas boiler steam condenses down, in order to achieve improved thermal efficiency boiler, gas boiler to reduce pollution. Since the fuel gas in the boiler used in most of the hydrocarbon, the higher the flue gas water vapor content, and is much larger than the coal-fired boilers. If the exhaust gas temperature is higher than the flue gas dew point temperature, water vapor as latent heat of the flue gas drained, it will take away a lot of heat. In North Shaanxi an example, wherein the hydrocarbon fraction accounted for 95.5% by volume, containing a large amount of hydrogen in the fuel element, the exhaust contains large amounts of steam, if the temperature is lowered to a dew point temperature of exhaust gas, the exhaust in the flue gas recovery section sensible heat and latent heat of the steam, the thermal efficiency of the boiler can be improved 1O% to 15%, a considerable number.

Revamping technology of coal-fired boiler conveyer at present the layer-fired boilers are burning raw coal, in which the majority of coal-fired boilers will hinder the air intake of the boiler and affect the combustion of coal-fired boilers. When the coal-fired boiler is reformed, the bucket-type coal feed is transformed into layered coal, and the middle block of raw coal is distributed loosely from the bottom to the top on the grate by using gravity filter, which is beneficial to the air intake, can improve the combustion condition and increase the combustion rate of coal. Reduce the carbon content of ash.

In some areas, the alkalinity of the water source is relatively high. After the combustion of the fuel gas 93 t steam boilers is heated and concentrated, the alkalinity of the pot water will become higher and higher. After reaching a certain concentration, it will foam on the evaporation surface, affecting the steam quality; Under certain conditions, if the alkalinity is too high, alkaline corrosion such as caustic embrittlement in the stress concentration portion may occur. Therefore, the alkalinity of the water should be reduced. In addition, the dissolved solid content is too high, it will also affect the quality of steam, and even cause steam and water to rise. It should be controlled by reasonable drainage.

Recently, the Tianjin Beichen District issued a "Tianjin Beichen District in 2019 to win the Battle of Blue Sky battle plan" (hereinafter referred to as "Plan"). "Plan" put forward: to strictly control new coal projects, the implementation of coal consumption reduction project alternative, prohibit self-supporting construction of coal-fired power plants. Complete the transformation of low nitrogen gas-fired boiler more than four before the end of September 2019.

Details are as follows.

1, reducing the total coal consumption in 2019, the region's total coal consumption and coal in primary energy requirements meet the relevant indicators. Strict control of new coal projects, the implementation of coal consumption reduction project alternative, prohibit self-supporting construction of coal-fired power plants.

2, ongoing heating, agricultural, industrial and commercial management of coal-fired boilers, coal-fired boilers to burn consolidate shut down rectification results to ensure that no rebound. Carry out special rectification coal, coal supervision prominence to the implementation of high-quality coal supply and security, supervision and management of coal enterprises to establish a purchase and sale accounting, prohibit the sale of low-quality coal does not meet the requirements of state and city, by increasing the sampling frequency, strengthen information disclosure, strict qualification management, according to the law firm did not check other means, to crack down on low-quality coal to maintain circulation, sale and use of high-pressure situation. Ongoing heating season heating companies burning coal quality inspection. Strictly implement the relevant requirements of the city, set up to ensure that the region is no longer operating coal storage space, strengthen supervision.

3, to promote the safe and orderly clean warm winter residents. The completion of the outer ring 23 000 residents in rural areas "coal to electricity," the task before the end of October 2019, the region's urban and rural residents to achieve bulk coal for heating, "cleared."

4, before the end of September 2019 to complete the transformation of more than four low-nitrogen gas boiler. The full implementation of leak detection and repair (LDAR) system. Ensure the region involving volatile organic compounds emissions from industrial enterprises and supporting environmental protection facilities full coverage, stable and meet the relevant emission standards.

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