National response to control air pollution and maintain policies favorable ecological environment; effective control of thermal power, steel and other key industries, the total amount of atmospheric emissions of major pollutants, Ningxia implementation of thermal power, steel and other industries, especially air emission limits for pollutants in the metropolitan area of Yinchuan.
In particular emission limits refers to higher standards than the national emission of pollutants, more stringent emission requirements; implementation of special emission limits, implementation of key industries mentioned standard transformation is one important way to reduce pollutant emissions. Yinchuan City metropolitan area including Yinchuan, Shizuishan City, Wuzhong City Litong District, Qingtongxia City Administrative Region and Ning Dong Energy and Chemical Base (core area). Perform particularly air pollutants emission limits in all of these areas of thermal power, iron and steel, cement, petrochemical, non-ferrous metals, chemical industry, coal-fired boilers and sulfur dioxide, nitrogen oxides, particulate matter.
Since the execution time is tentatively scheduled for January 1, 2019, for the present, China has not yet specified air pollutants emission limits in particular industry, to be the relevant standards or modified, re-implemented.
For enterprises, especially not achieve emission limits of air pollutants, the government has formulated a series of remediation measures, the relevant enterprises to effectively assume responsibility for the theme of pollution control, ensure the completion of the task within the stipulated time. For within the specified time still can not meet the requirements of enterprise and equipment, the relevant departments will be severely punished according to law.
1, a safe distance from the boiler room and a class of high-rise building is 15 meters: 9-16 refers to a class of high-level layer (up to 50 m height);
2, a safe distance from the boiler room and multi-residential buildings is 13 meters: 2-9 refers to multi-storey buildings layers residential and other civil construction height not exceeding 24m of;
3, boiler room safe distance before the podium is 10 meters: the height of the top of the podium connected generally not exceed 24m.
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Cause the 10t seller industrial boiler russia normal outage due to natural blood pressure steam having a saturation temperature at a certain constant pressure, when the pressure change, the saturated water and saturated steam temperature change accordingly. If the boiler shutdown pressure drops too fast, the saturated water and saturated steam temperature dropped significantly. Due to the high rate of change of pressure saturation temperature at a lower pressure, because the saturated vapor in contact with the drum wall, the lower wall in contact with saturated water vapor than the thermal conductivity of water is large, the heat accumulator drum lower wall water to pass quickly the drum wall at a temperature close to the saturation temperature at the new pressure after the pressure drop, and poor heat transfer walls of the drum to maintain a higher temperature, the drum wall temperature is higher than the wall temperature, the faster the vapor pressure drop, the drum, the greater the temperature difference between the lower wall. Simultaneously vapor pressure decreased too fast, which also decreases the saturation temperature corresponding to accelerate the wall temperature waterwall, economizer header and the faster decline, due to the rapid cooling, the contraction will have a great thermal stress, local joint, at the weld easy to crack, so the boiler outage to take normal blood pressure naturally. When the normal flame boiler shutdown, soft drinks all doors should be closed, closing dampers, Manhole the boiler is in the closed state, allowed to cool down.