February 13, 2019, a food processing plant in Heilongjiang province, after the Spring Festival to resume production process, small capacity coal fired boiler explosion accident occurred, killing two people were killed, to the masses lives and property of people come at a cost, resulting in adverse social impact .
To reduce boiler accident, maintain social stability and security personnel, Suihua City Market Authority to act quickly, on February 15 Kusakabe issued an emergency notice to deploy to carry out safety hazards investigation boilers within the city, the focus of the investigation after the Spring Festival recovery boiler operation baths and other crowded places in boilers, boiler timely elimination of security risks in the management and operation aspects of existence.
As of now, law enforcement officers deployed 116 times, check unit 52, checks the boiler 64 for five in the boiler there are security risks of Special Equipment Safety Supervision issued a letter of instruction, ordered to stop using, be put into use after the rectification qualified.
A bunch of factors that cause pressure cast iron small capacity coal fired boiler efficiency China have occurred in high-profile coal to natural gas operation, cast iron boiler should be transported, greatly avoid dust contamination, smoke and harmful gases such as nitric oxide are also under control. Efficiency is the key measure of regular cast iron boilers, let you research a bunch of factors that cause the cast iron boiler efficiency under pressure. Through the study of relevant departments, cast iron boilers heat loss is mainly due to bear with these two places: the proportion of full combustion air flue gas emissions related to unreasonable waste heat. Reduce flue gas emission waste heat boiler can be installed in a cast iron terminal fume fever recycled back into the formation, or should be shipped condensing boilers more advanced functions. Combustion air ratio sufficient unreasonable unsuitable Summary: ejector ordinary cast iron boiler burner, air-formed flexible scheduling can not occur. Many non-automatic blower cast iron boiler burners, creating factors that cause unreasonable fuel ratio are the following: the main air-fuel ratio unreasonable inclusion can be divided into two conditions: when the airflow excess, having endless excess cool air is heating, creating a cast iron boiler operating costs increase, reduced cast iron boiler efficiency; when the airflow of non-compliance, will reveal the phenomenon is not completely lit, cast iron boiler efficiency appears weakened.
What is the transformation of the principle of low nitrogen small capacity coal fired boiler: In recent years, the state vigorously promote clean air plan, Yajian coal. Whether the use of coal-fired central heating boilers, and rural small coal stove for cooking and heating, are gradually being clean energy alternatives under the relevant policy. Thus, in recent years, sulfur dioxide, dust content in the atmosphere continues to decline. But it is worth noting that more and more use of natural gas, also caused a certain amount of nitrogen oxide pollution.
Operating costs of different fuel steam small capacity coal fired boiler comparison: Gas: Advantages: clean energy, high thermal efficiency and save costs. Disadvantages: Restricted gas on condition. Generating a cost of about 2.4 tons of steam million (calculated as the price of 3.0 yuan gas / side) fuel: advantages: no pollution, high efficiency, no fuel limitation. Disadvantages: higher operating costs. Produce one ton of steam costs about 594 yuan (fuel prices by 9.0 yuan / kg calculated) electrical heating: advantages: no pollution, no fuel limitation. Disadvantages: is a secondary energy, high operating costs to produce one ton of steam costs about 700 yuan (electricity prices by 1 yuan / kWh). Coal: advantages: low operating costs. Disadvantages: pollution, restrict the use of some areas, the cost of one ton of steam produced is about 150 yuan (coal prices by 1,000 yuan / ton). It works coal, gas steam boiler
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