It is understood that around prevention and control of air pollution, ecological Environmental Protection Office of Shaanxi Province has formulated the "Boiler Air Pollutants Emission Standards" ( "Standards"), amended the "off key industries in the region of atmospheric pollutant emission limits." In the future, biomass, alcohol fuel high pressure boiler generates steam emissions also be included in "Standards".
"Standard" is to integrate and improve the local air emissions standards boilers. "Standard" for the scope of the province, covering coal, gas, oil, various types of fuel such as biomass; using alcohol fuel (e.g., methanol, ethanol, dimethyl ether, etc.), gas-fired boiler with reference to the implementation of emission limits.
After calculation, coal-fired thermal power boilers in Shaanxi Province implementation of the new standards, particulate matter, sulfur dioxide, nitrogen oxide emissions respectively about 0.67 tons 15,200 tons, 1.26 tons, down 27%, 40%, 21%; Burning after transformation of coal boiler, particulate matter, sulfur dioxide, nitrogen oxide emissions can be about 01,400 tons, 1.42 tons 14,100 tons.
With the haze pollution reduction work to promote strong, Shaanxi Province coal-fired generating units and 20 steam tons / hour or more coal-fired boiler to carry out the transformation of ultra-low emissions, will gradually iron and steel, cement and other industries to carry over non-electric low-emission transformation, the original standard has been overtaken by change of environmental situation. Additionally, the Guanzhong area of glass, ceramics, bricks, gold and other industry, there are a certain number of kiln, its environmental requirements leniency.
The revision of the "off key industries in the region air pollutant emission standards", the abolition of the thermal power industry, coal-fired boiler emission limit requirements, these two sectors rose to individual standards province-wide.
It also increases the coke nitrogen oxide emission limits Chemical Industries, gold industry, glass and glass products, ceramic industry emission limits, increasing the concentration of tile industries and atmospheric pollutants conversion approach.
The new standards are expected coke chemical industry NOx emissions will decrease 70%, the sintering process the steel industry, the particulate matter, SO2, NOx emissions decreased by 50%, 72% and 67%, respectively.
WNS steam high pressure boiler generates steam conservation needs to do what recent customers find us fast boiler, maintenance aspects of consulting WNS steam boilers do what check? To solve this problem, our technicians providing answers. 1, external to the inspection process in the boiler low nitrogen periodically check the state of the external boiler, the boiler housing to ensure that no traces of rust corrosion occurs, and the connection between the various parts of the loose without loosing phenomenon, the appearance of the boiler deformation does not appear. In addition, welds and heat affected zone of the boiler also check there is no defects such as cracks, where necessary, be checked using the surface inspection or other testing methods. 2, a low nitrogen boiler internal inspection requires a lot of internal inspection of the site, wherein for the previous test of the defective parts, the same test methods to be employed, or increasing the appropriate inspection method of flawed or has been subjected to defect repair site focus review retest; head low nitrogen boiler tube plate, furnace combustion chamber and a return header and also must undergo periodic inspection; combustion apparatus in addition also check whether there is a boiler burning, deformation phenomenon. 3, the test needs to be tested to a predetermined pressure boiler pressure tightness and strength member is performed when checking for a low pressure nitrogen pressure boiler inspection, making the hydraulic inspection time to pay attention not to participate in the communication member of the hydrostatic test (such as outside the scope of boiler pipes, safety valves, etc.) should take credible measures to cut off. If the check is carried out at low temperatures, then we will take effective measures to freezing. These are some of the content WNS steam boiler should be regularly detected, at the time of WNS steam boiler inspection, detection order is also very important, usually the first internal inspection, water pressure inspection, do an external examination.
Henan Power condensing gas high pressure boiler generates steam shutdown Notes Henan condensing gas boiler and safety accessories should be inspected, and in the period. Henan before condensing gas boiler conditions and should have check: natural gas supply valve is opened, gas pressure check is normal, the normal vent gas filter. Check whether the normal pump, and open the water supply system of each part of the valve, damper, when in manual position should flue open position should the pump selection switch for selecting the cabinet in place; Annex should check the safety in the normal position , water gauge, pressure gauge should be in open position; each operation site should have good lighting; deaerator normal operation; softening equipment can operate normally, and demineralized water should meet the standard, the soft water tank GB1576 the water level is normal, trouble-free operation of the pump. 1. Turn on power switch is turned on matters of cabinet, check all parts are normal, whether there is a fault signal, if no signal measures should be taken to repair or inspection, troubleshooting; automatic cleaning enters the burner, ignition, partial load, full load operation state when up to a certain pressure, should be regularly sewage once. 2. Matters normal shutdown shutdown: Close Henan condensing gas boiler operation switch; natural gas valve closed; reduced pressure within the drum; the drum water level at high water; discharge check valve is closed tight; pump valves closed boiler; Close main power switch. Accident shutdown: When they find Henan condensing gas boiler body produces abnormal phenomenon, the safety control device failure should move the emergency disconnect button, stop running; boiler feed pump damage, mediation device failure, emergency disconnect button should move to stop the boiler operation ; when there is a problem of power fuels should be taken off pressing the emergency button; when there is the phenomenon of harm Henan condensing gas boiler or personal safety should take emergency shutdown. A temporary power outage Note: rapid closure of the main steam valve, to prevent dehydration drum; off power switch and gas valve; closed boiler blowdown valve to prevent surface condensation gas boiler Henan other fault occurs; Close supply valve deaerator; normal stop furnace order, check boiler fuel, gas, water shutdown valve meets the requirements.
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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