Since 2017, located in Changchun City, Jilin Province to accelerate the governance of coal-fired boilers within the city out of small coal-fired boilers remediation process. Up to now, the work has achieved initial success.
15 in the city with 20 kilowatts and above the coal-fired generating units, 13 units have ultra-low emissions; city table 292 with 20 t steam / hour or more coal-fired boilers, emission standards have reached the count 253 male , accounting for 86.64% of the proportion of the boiler with; the city built area of 10 steam tons / hour small coal-fired boilers 2962 units, out of a total of 29553 units, up 99.7% out of proportion, the basic completion of the national requirements out of the task.
In order to further improve air quality, improve people's living environment standards index, Changchun City by expanding the ban on burning area, improve the standard phase-out of coal-fired boilers, plans to use two years of urban 20 tons of steam / h coal-fired boiler (kiln) furnace eliminated.
By the end of 2017, the city has eliminated 20 tons of steam / hour coal-fired boilers 964 units; at the same time to speed up the central heating and (expanding) network as well as the pace of clean energy promotion, provide for the transformation of the city's coal-fired boiler control a strong guarantee.
In recent years, Changchun City, adhere to the full implementation of coal-fired boilers governance, to improve ambient air quality in Changchun City has played a positive role. 2017, good days Changchun 276 days, compared with 2013, an increase of 35 days; heavy pollution days 10 days compared to 2013, reduced by 33 days; major air pollutants respirable particulate matter (PM10) and fine particles (of PM2.5) were 78 mg / m and 46 micrograms / cubic meter, respectively, 39.5% and 37.0% decrease over 2013.
Boiler leakage of pharmaceutical and correct operation of the boiler leakage causes and correct operation method pharmaceutical methods commonly used in the pharmaceutical boiler is a steam boiler cheap price for sale, in the course of its use because of improper boiler operation, there may be some or that kind of problem where flue boiler corrosion caused by water leakage problem is one of them. The reason for this phenomenon a. Boiler feedwater oxygen scavenging process is not performed, resulting in chemical oxygen should, boiler, or other ingredients of the metal parts, boiler corrosion occurs, not in time for a long time, causing the boiler water leakage. b. routine improper operation, shutdown did not close when the water supply valve or the steam valve main pipe, air into the furnace, and again use the boost, the incoming oxygen is not timely removed, so that in a hot and humid environment caused by oxygen long-term corrosion perforation of the smoke pipe. Precautions: in strict accordance with standard operating a steam oven in accordance with operation of the boiler feedwater standards GB1576-2008 oxygen, reduce the oxygen content, avoid the presence of oxygen, chemical corrosion. b. When shutdown, when the boiler is in the normal high water level shutdown and normal pressure, and then close the inlet valve and the main valve, to prevent intrusion of outside air oven. c. boiler room to keep dry, clean, ventilated, while the process of personnel to operate the fireman to be precise, compliant. d. strengthen valve maintenance, maintaining rigor. In short, there are many reasons causing leakage of pharmaceutical boiler, but if the mistake is due to improper operation caused by the boiler, it should be noted in particular the normative operation, prudence, as far as possible preventive measures.
The method of chemical plant boiler safety inspection method which chemical plant boiler safety inspection of which 1, the basic test. In fact, there are a lot of boiler safety inspection method, in general, most of the inspectors usually use their own senses to test, which is the basic method of testing, mainly through seeing, hearing and other senses to recognize the quality of the boiler, to see whether it occurs deformation, etc. Therefore, application of this method often requires inspectors be able to have some work experience, so as to better meet the requirements of the job. 2, the use of tools for testing. Using tools to test is the more common test methods, compared with the basic test methods, the use of tools such way is more scientific and accurate, especially if it is to carry out in-depth examination, we need to use some tools, so as to ensure the accuracy and reliability of test results, the better to promote the smooth progress of inspection work. In practical terms, most of the time, people are more accustomed to using a small hammer to test, you can tap to check all parts of the boiler, the staff felt, etc. can be fed back to identify the defects, loosening problem. So, again, it also requires quality inspectors can cross the border, with a certain level of expertise is essential. In addition to a small hammer, you can use a ruler to quality testing and other tools.
Steam boiler in time to pay attention to whether there is gas in the cylinder, can periodically open the cylinder air valve to discharge, so as to avoid the cylinder gas resistance, and affect the intake water. The flow regulation of pump should be realized by bypass regulation, but not by means of adjusting outlet valve. Pump in rated discharge pressure, its intake pressure shall not exceed the specified value. The pressure difference between intake and exhaust shall be kept within the prescribed range.
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