2ton wns series gas fired steam boiler
To improve the quality of atmospheric environment, the Xinjiang Uygur Autonomous Region issued a "Xinjiang Uygur Autonomous Region Air Pollution Prevention Act" (hereinafter referred to as the "Regulations"), adhere to all the people involved, the source of governance, planning ahead, treating the symptoms, cooperative control, damage to bear responsibility in principle.
First, governments at all levels should implement the total coal consumption control system, adopt economic and technical policies and measures to reduce the total coal consumption, encourage and support the development and utilization of clean energy, and guide enterprises to develop clean energy alternatives to reduce coal production , use of atmospheric pollutants, emissions during the conversion.
Second, the regional government development and reform departments shall, jointly with relevant departments, according to the needs of economic and social development and regional environmental resources carrying capacity and other conditions, the development of total coal consumption reduction targets and control programs. State, city (prefecture) and county (city, district) people's government development and reform departments shall, jointly with relevant departments, according to the planning and control total coal consumption reduction targets, total coal consumption in the region to develop control plans and their implementation.
Third, promote urban built-up areas, industrial parks centralized heating, use of cleaner fuels. Before central heating pipe network coverage area, prohibit new construction, renovation, expansion of coal-fired heating boilers, central heating pipe network coverage, has been built using coal-fired heating boilers should stop using the deadline. In areas not covered by the central heating to encourage the use of clean energy alternatives, to promote the use of environmentally friendly energy-saving boiler. When the deadline out of the city government does not comply with national and regional scale coal-fired boilers.
Fourth, according to the city government to improve the quality of atmospheric environment requirements, delineated and publish high-pollution fuel combustion zone ban, and gradually expand the scope of the ban on high-pollution fuel combustion zone. In the combustion zone ban, prohibit the sale, burning polluting fuels; prohibit new or expanded high-polluting fuel burning facilities. Have been completed, should switch to clean energy within the prescribed time limit.
Fifth, governments at all levels should strengthen civil bulk coal governance, prohibit the sale does not meet the civil standard of quality coal for coal, to encourage residents to burn with high-quality coal and clean coal, to promote energy saving stoves, and promote the development of alternative and clean energy in rural areas use. Encourage rural energy-saving housing.
75 ton CFB boiler
Fuel Flexibility: The most important advantage of the CFB boiler is the flexibility of firing a wide range of coal from 9500 to 25000 kJ/kg. CFBs can also burn a limitless number of other types of solid fuels, separately or mixed with coal. The limitations if any are only in the feeding and other mechanical equipment. The output capacity and steam parameters depend on the heating value of the fuel.
75 ton CFB boiler can use different types of solid fuels that include low quality coal, lignites, coal blends, bagasse in sugar plants, bark in pulp and paper mills, coal washery rejects in mines, petcoke and other bio mass products. Most of these fuels are seasonal, production or availability dependent. Mixing with coal or using coal when other fuels are not available gives an uninterrupted steam and energy supply.
1. Sulphur Dioxide removal: Firing high Sulphur coal requires the use of a Flue Gas Desulphurisation (FGD) plant to keep emissions within statutory limits. An FGD is a complicated plant that requires high capital investment and operational cost. In a CFB limestone addition in the furnace converts the SO2 to sulphates during the combustion and circulation which goes out with the ash. A CFB boiler costs less than a PC fired boiler with an FGD.
2. NOx Reduction: The combustion temperature in the furnace in a CFB boiler is considerably less than PC boilers resulting in lower NOx emissions. There is no additional requirement of separate NOx capturing devices which reduces capital investment.
3. Maintenance: Eliminating the pulverizer and pulverized coal piping reduces maintenance, related outages and equipment redundancy. A part of this saving is offset by higher maintenance due to erosion in pressure parts and furnace area, and maintenance of the refractory.
In Malaysia, there are lots of biomass fuel like palm shell and palm fiber, we recommend SZL or DHL type for using water tube boiler. If the steam capacity is less than 25t/h, the SZL will be the best choice, whereas if the steam capacity is more than 25t/h and less than 100t/h, DHL corner tube boiler could be chosen. In addition, the gas or diesel is another kind of source for the local user, so SZS type could be recommended.
How to maintain the boiler shutdown? After boiler shutdown cooling, heating surface must be thoroughly cleaned of fouling and ash grate the upper, the lower portion of the furnace. Then to maintain a certain degree of natural ventilation flue. In general, in order desiccant moisture should be placed in the furnace, flue. The quicklime as a drying agent, within the furnace or flue gas per cubic meter should be placed generally about 3kg. After placing all the ventilation should be tightly closed doors. After the change of lime powder to be replaced. Low-lying position as boiler room, ground during shutdown severe flood tide, often approach should be used and placed a small fire to dry desiccant combination. How to care? If the boiler shutdown a long time, the boiler shutdown after complete removal of soot coated with an anti-corrosion red lead paint in oil or other metal surface furnace. As internal corrosion Maintenance shutdown of the boiler body, under normal circumstances, can be used wet shutdown maintenance is not more than one month, one month electrically operated 2ton wns series fired steam boiler should be taken to dry more maintenance. To note the following problems when a dry maintenance: desiccant boiler not in direct contact with the metal surface, may be mounted in a container such as the iron plate after the desiccant is placed, and a hole for shutting the other hand hole cover.