fire tube atmospheric pressure boiler

Environmental protection in fire tube atmospheric pressure boiler applications which have common problems and ways to solve what are the problems of environmental protection boiler precipitator practical application, the standard approach is Bucai boiler precipitator ash hopper at the choice of screw conveyor, air lock device selected under sub-grid wheel feeder this two kinds of missing equipment, boiler precipitator, bag filter because of its advanced technology, reliable operation, easy protection, more and more companies have been paid. the reason for each plant location and climate characteristics and production crafts vary, their problems will not the same. Now on common problems and solutions narrative follows. Transport equipment and air lock defect rate: standard approach is Bucai boiler precipitator hopper at selected screw conveyor, air lock feeder devices of these two high defect rate in selected bins wheel device, particularly a screw conveyor. the shaft and blades in the hopper, which is hanging bearing defects, protection difficulties. Solution: 1) requires the manufacturer to change shape as the hopper, to shorten the length of the conveyor spiral its length is less than 4m, not necessarily hanging bearing structure, easy maintenance and high in plant protection height, and to meet the pumping pockets. premise space, the choice of a multi-hopper configuration, undo the screw conveyor, so that the device can cut protection, can save electricity. Andeng multi-floor, the floor space because of the high, lengthening hopper (preferably less than 4 chamber boiler precipitator). this approach hopper add a little material, but investment costs can be recovered decline in jobs added in four months. Under 2) Double-stack feeder weight This valve, so that not only can eradicate defects, and cut one working motor, decreased production costs.

Fast party independent R & D and manufacturing SZS Hose steam fire tube atmospheric pressure boiler having a low nitrogen, energy efficient, safe, easy to use, etc., using the waste heat of flue gas cascade, reasonably designed to maximize use of waste heat in the flue gas ; and the use of more than 95% of intelligent manufacturing equipment to ensure safe and reliable product quality; a number of warning device comes with boiler scale detection, smoke detection temperature, pressure sensing, all-round protection of the safe operation of the boiler.

Boiler flue gas condenser can effectively reduce production costs, reduce exhaust gas temperature of the fire tube atmospheric pressure boiler, the boiler thermal efficiency. To run the boiler in line with the national energy saving standards. Energy conservation is the national "Eleventh Five-Year Plan" key and ensure transformation of economic development is to implement the scientific concept of development and to ensure that an important indicator of fast economic development, energy-hungry as special equipment, but also environmental pollution important source of special equipment to strengthen the task of energy saving long way to go. "National Economic and Social Development 10th Five-Year Plan" to establish a unit of GDP total energy consumption by 20% to 10% reduction binding targets economic and social development of the total discharge of major pollutants. With its industrial production is the "heart" of the energy consumption of the boiler is large. High-performance special equipment mainly refers to the boiler, a pressure vessel heat exchanger equipment. Gas-fired steam boiler 'boiler energy saving technical supervision and management regulations "(hereinafter referred to as" Regulations ") on December 1, 2010 came into force. And the boiler flue gas temperature can not be raised above 170 ℃, the thermal energy efficiency of the gas boiler 88% or more, does not reach the efficiency metrics for the use of the boiler can not be registered. In a conventional boiler, fuel combustion in the boiler, the exhaust gas temperature is relatively high, the water vapor in the flue gas is still in a gaseous state, it will take away a lot of heat. In all types of fossil fuels, the highest quality of natural gas the hydrogen content of the hydrogen percentage of about 20% to 25%, and therefore, the exhaust contains large amounts of water vapor, it is estimated that one square meter of combustion steam to natural gas produced heat away paper as 4000KJ, about 10% of its gross calorific value. Flue gas condensation heat recovery unit, with a lower temperature of the water or air cooling the flue gas, the flue gas temperature is reduced to achieve close heat transfer surface area, condensation of water vapor in the flue gas, the sensible heat of flue gas while achieving release of latent heat of condensation and water vapor release, while water or air absorbs heat in the heat exchanger is heated to achieve heat recovery, improve the thermal efficiency of the boiler. Boiler thermal efficiency increase: 1NM3 natural gas combustion flue gas production theory is about 10.3NM3 (about 12.5KG). Excess air factor of 1.3, for example, flue gas produced 14NM3 (about 16.6KG). Take decreased flue gas temperature of 200 degrees Celsius and 70 degrees Celsius, physically sensible heat released about 1600KJ, taking water vapor condensation rate of 50%, releasing latent heat of vaporization of about 1850KJ, total heat 3450KJ, about 10% of the net calorific gas, if the taken 80 % flue gas into the heat recovery, energy efficiency can be improved more than 8%, natural gas fuel savings of nearly 10%. separate arrangement, the installation forms, flexible and reliable. Spiral finned tube as a hot surface, heat transfer efficiency, sufficient heating surface, the flue gas side of the system small negative force, meet the general requirements of the burner.

How natural gas fire tube atmospheric pressure boiler cleaning? Alkali cooking cleaning method: gas-fired cooking alkaline cleaning method descaling, pickling cleaning effect than the difference method, but since a base boiled loose scale, and therefore difficult to remove with hydrochloric acid for scale before acid pickling may be treated with a base to conduct a cooking method. Alkali cooking method is simple, relatively small side effects. The disadvantage is a long time cooking oven, more reagent consumption, and poor results. Descaling pickling method: gas boiler descaling pickling process using hydrochloric acid or nitric acid, most of the cleaning. Pickling solution by adding nitric acid or hydrochloric acid was added inhibitor of the corrosion inhibitor composition. This can eliminate the acid liquid natural gas boiler scale (scale except when nitrate, hydrofluoric acid to be added), and very little corrosion in the boiler. Descaling pickling has dissolved, exfoliation and slack action. Mechanical descaling method: When a loose scale and slag within the gas boiler, the boiler shutdown after cooling, let go of boiler water, rinse with water after, to use flat shovel, wire brushes, and motorized milling tube is descaled . This method is relatively simple, the scale used for simple, small boilers. However, labor-intensive, ineffective cleaning, easy to damage the boiler.

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