Traditionally, the coal ignition temperature in CFB water fire tube boiler for vietnam anthracites is estimated from experience with little theoretical basis and relatively large uncertainties in the estimates. These uncertainties result in operating difficulties and economic loses. For example, if the coal is fed into a furnace at a temperature lower than, the coal will not burn and the furnace temperature will decrease even more. Once the fuel concentration and temperature in the furnace reach the critical conditions, the mixture will flash and the furnace temperature will suddenly increase which leads to control problems. Feeding the coal in the furnace at temperatures higher than is safer but costs more start up time and fuel. Laboratory scale fluidized beds are often used to measure the coal ignition temperature in CFB boilers, based on the criteria such as the flame and spark characteristics, bed temperature response and oxygen response.The coal ignition temperaturein, in fluidized beds boilers is not only a function of the physical and chemical properties of the coal, but is also influenced by the heating rate, the boiler structure, the fluidization velocity and the particle size as well. Therefore, a set of standard operating conditions was specified for the measurements of the coal ignition temperature,in a laboratory scale fluidized bed boiler. This article described a standard for measuring the coal ignition temperature with typical results in a laboratory scale fluidized bed with under-bed preheat system. The tests measured for seven coal types were compared with the actual feed temperatures, in real CFB boilers in China at various loads. The temperature differences between measured in the laboratory fluidized bed and measured in the real CFB boilers for the various types of coal were plotted against the proximate analysis of the coal to estimate the lowest feed temperature in real CFB boilers.
Maybe people will think condensing gas water fire tube boiler for vietnam anthracite maintenance will be very complicated, it is not. Fast square each boiler at the factory, we will configure the product maintenance manuals, to make a series of operational requirements for the maintenance time and method.
Hebei Cangzhou issued a "special program on the implementation of standards of governance water fire tube boiler for vietnam anthracite." Emission standards for boiler treatment and corresponding indication made, as shown in details as follows.
First, the standard standard coal-fired boiler
1, before the end of September 2019, within the city of more than 35 tons of steam / hour ultra-low emission coal-fired boilers complete transformation, emissions of major pollutants to achieve ultra-low emission standards (dust ≤10mg / m³, SO2≤35mg / m³, NOx≤50mg / m³).
Before the end of the year 2/2020, the city eliminated 35 tons of steam / hour and coal-fired boiler, stove and stove operating a small coal stove, achieved within the city 35 steam tons / hour and the boiler "No Coal." Reserved 35 steam tons / hour and coal-fired boiler, stove and stove operating a small coal stove implementation of the special emission standards (dust ≤30mg / m3, SO2≤200mg / m3, NOx≤200mg / m3).
Retention of more than 35 tons of steam / h coal-fired boiler to install air pollution automatic monitoring facilities and networking with the environment department, to install a distributed control system (DCS system), real-time monitoring of pollutant emissions.
Second, gas-fired boiler
1, before the end of September 2019, the city completed two-thirds of the total number of units of low-nitrogen transformation gas boiler above. Among them, the central city of all gas-fired boiler and all the city's industrial and commercial gas-fired boilers to complete a full rebuilding mode low nitrogen.
2, the end of June 2020, the conventional gas boiler should be completed by transformation of a low nitrogen combustion, soot, sulfur dioxide and nitrogen oxide respectively 5mg / m³, 10mg / m³, 30mg / m³.
Third, the task
1, increase clean energy alternatives. In areas not covered by central heating pipe network, and vigorously promote geothermal, wind, solar and other clean energy, in an orderly way from coal to gas and coal to electricity, to change the power-based. In 2020, under the conditions of gas supply has been guaranteed, the city eliminated 35 tons of steam / hour and below the coal-fired boilers.
2, increase the coal management and control efforts. Coal infrared video monitoring devices to increase coal quality sampling efforts, to retain the blast furnace coal-fired boilers to be installed, Hebei coal to meet local standards "Industrial and domestic fuel coal" (DB13 / 208102014) non-coal power generation industry quality indicators .
3, strict new boiler access. Ⅲ class urban area and high-pollution fuel combustion zone ban municipal government designated a ban on new coal-fired boiler, a citywide ban on new 35 steam tons / hour and coal-fired boilers, the new 35 steam tons / hour of coal-fired boilers must in line with the municipal government of central heating planning or construction of industrial parks planning, energy efficiency reached AQSIQ "energy-saving technology supervision and management procedures boiler (TSGG0002-2010)" requirements, encourage the use of "energy efficient boiler promotion List" reached the level of energy efficiency standards boiler, pollutant emissions to meet emission standards require extremely low.
8 tons of industrial steam water fire tube boiler for vietnam anthracite how much the price of 8 tons of industrial steam boiler price how much? Currently in the process of industrial production, a lot of places were you can see the figure of a steam boiler. Therefore, the amount of current industrial demand is still very large. Basically demand is great. Generally required tonnage basically concentrated in about 10 tons. Recently, there is an industrial consulting company need to purchase a steam boiler fast boiler, but for specific models and prices not very understanding. So let Fang fast technical staff to help carry out the accounting model used, there is the price of the basic budget of the procurement. In this regard, technical staff fast boiler for the actual situation of the industry manufacturers to understand, out of accounting data show that the industrial enterprises with an 8-ton industrial steam boilers are produced to meet the needs of the present, the model price is about 960,000. So, for everyone 8 tons of steam boiler prices already have detailed understanding.
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