In the fire tube fired heating steam boile Stoke process, why should record the amount of expansion of the expansion indicators? Pressure increased at the boiler temperature member to be expanded, the expansion in order not hindered. Excessive thermal stress in the pressure member, pressure member always take a variety of measures to compensate for thermal expansion. For example, conventional steam pipe "Π" type and "Ω" compensator is an example. There way compensation is often used with one end fixed, the other end of the heat can expand freely, the drum and the waterwall tubes often used in this manner.
After a long period of use, the fire tube fired heating steam boile will accumulate carbon. Boiler cleaning is aimed at the coking and carbon accumulation of the boiler in the process of operation. It is a good solution to the contradiction of boiler cleaning affecting production, and the conventional cleaning technology will produce a large amount of waste water. Let's take a look at it. 1. Decoking cleaning: adding diluted detergent to the boiler system and filling the boiler system with a high trough water level of 1 / 2. Amount of coke remover: 10% and 20% according to scale thickness to determine the specific dosage. Temperature: 90 ℃ 95 ℃, time: 12 h 72 hours, according to scale thickness can be determined. 2, rinse cleaning: boiler cleaning system after cleaning Rinse with clean water for 2 times until the coke cleaner is free of foam and the water is clear. Temperature: 85 ℃, 95 ℃, time: 5 hours. 3, blow the water step: after the boiler is cleaned, connect the air compressor at the pressure gauge or other connectable place, use compressed air to boost the system to 0.3 to 0.4 MPA, and empty at each low point, so repeated until the water is blown out.
Fire safety means fire tube fired heating steam boile room and a fuel gas (C) and CPI production plant, facilities should foam, vapor, etc., and an indoor fire water supply should be set. A boiler room building is, when two fire resistance rating, without providing indoor fire water supply. The number of fire extinguishers configuration generally based on a configuration of 50 m2, boiler room but not less than two.
Jilin Province is located in northeast China, colder winter. Jilin Province is the autumn and winter air pollution problems are most acute period is the peak period of fog and haze. To reduce the frequency of occurrence of fog and haze, to reduce emissions of air pollution, according to "implement the central Jilin Province Environmental Protection Inspector feedback reform program", Jilin cities to carry out the 2018 autumn and winter special law enforcement inspection of non-electric coal-fired fire tube fired heating steam boiles. Specific implementation of the program as follows.
2018 autumn and winter non-electric coal-fired boiler special law enforcement inspection action plan
First, the objectives
Through the "2018 autumn and winter special law enforcement inspection of non-electric boiler coal" action to further increase the intensity of emissions of air pollutants such as excessive penalties for violations combat, urge local governments and environmental protection departments to effectively implement the "Jilin province to implement the central environmental protection inspector feedback reform program, "Forced enterprises to speed up 10 tons of steam coal-fired boilers small and out of more than 20 tons of steam and non-electric coal-fired boiler pollution control facilities upgrade progress to ensure stable discharge standards.
Second, the scope of the inspection
Cities (prefectures) and Changbai Mountain Administrative Committee, Meihekou, Gongzhuling City, Hunchun.
Third, check the time
2018 Nian September 1 to November 30.
Fourth, inspection methods and content
Cities (prefectures) and counties under the jurisdiction of Changbai Mountain Administrative Committee to set up inspection teams to units in the area to take a cross peer review mode, Meihekou, Gongzhuling City, Hunchun to self-oriented.
The principle of mutual cross-check on the environmental violations found, the city's environmental protection departments at all levels in accordance with "should check to make investigation, should make a fine penalty, should be moved to make-shift" of errant given time out of the boiler, not dust removal facilities renovation no construction of desulphurization facilities are not required to install, networking, using automatic monitoring equipment, excessive discharge of pollutants and other acts take full advantage of "environmental law" and supporting measures to implement daily basis penalties, limited production shutdown, sequestration, administrative detention measures to deal with.
Focus on examination of the following:
(A) the progress of 10 tons of steam coal-fired boilers little out of work. According to "implement the central Jilin Province Environmental Protection Inspector feedback reform program," according to the time limit set by local governments, the progress of the phase-out of coal-fired boiler 10 tons of steam since 2014, the province's illegal 1570 newly registered units to be checked.
(B) more than 20 tons of steam coal-fired boiler non-electric dust removal, desulfurization facilities upgrade progress, automatic monitoring equipment installation, networking, usage. By ShengTing 6, July scheduling, the current to complete the rectification stage 717, stage 108 does not start the rectification, the rectification is 277, automatic monitoring equipment table 140 is not installed, the slow progress of the rectification. To complete the transformation around the boiler on-site verification, focusing on inspection facilities dust removal, desulfurization facilities upgrading and installation of automatic monitoring equipment, networking, usage. Percentage being modified, check the current progress of the major transformation of the situation, progress of the project, the time frame for completion, safeguard measures taken, it requires the use of boiler units issued commitments. For failure to start the transformation, to identify the main reason for not starting. If we do not transform the way in which the pin number to take all necessary construction and renovation tasks must be completed in accordance with the requirements of 30 September.
(C) boiler emissions standards. To install automatic monitoring equipment to monitor them than to confirm the validity of the data. For failure to require the installation of automatic monitoring equipment, shall be punished in accordance with relevant laws and regulations, at the same time supervisory monitoring, to determine whether to achieve a stable discharge standards.
Fall and winter heating season is the peak of Jilin Province, to ensure the normal heating units, we must also pay attention to boiler problems in the process of environmental protection. For the high-emission, high-polluting coal-fired boiler and other fuel boiler, to be banned or corrective action.
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