Gas Steam Boiler Parameters


Gas Steam Boiler Parameters

Gas boiler which has few parts of the main gas boiler: the enclosed pipe chimney pipe tube sheet base gas outlet steam dryer Confining the majority of the peripheral tubes to form a complete gas boiler. The main effect of gas boiler: the combustion of the fuel is heated by the feedwater temperature and the exothermic heat of the flue gas with a heated surface, so that a final water into superheated steam having a quality of qualified certain parameters. The water in the boiler to go through preheating, evaporation, overheating in three stages in order to become superheated steam. In fact, in order to improve the efficiency of the steam power cycle, there is a fourth stage, i.e. re-superheating stage, soon after the high pressure turbine expansion work to reduce the pressure and temperature of the steam back to the boiler is heated and then sent to the low pressure turbine cylinder continues to work. In order to meet these four phases change, the boiler must be arranged in the respective heating surface, i.e. the economizer, water wall, superheater and reheater. Superheater and reheater disposed in an upper horizontal flue backpass and functions of the fuel system is to ensure the desired fuel burner. The fuel oil burner system are: tubing and fittings, pumps, solenoid valves, nozzles, heavy oil preheater. The gas burner mainly a filter, pressure regulator, solenoid valve, and then firing solenoid valve, the fuel valve. Economizer disposed in the lower back pass. In order to utilize flue gas heat of heated air required for combustion, usually air preheater arranged after the economizer. Some additional preheating large boiler superheater heating surface or in the furnace, and then heat-receiving surface.

Hot water boiler which is not equipped with no impact can cause demineralizer 1, the waste fuel boiler fouling occurs, resulting in poor heat transfer performance of heating surface, so that heat generated by the combustion of the fuel can not be timely delivered to the boiler water, but a large amount of heat is smoke away, resulting in exhaust gas temperature is too high, if the exhaust gas loss increases the thermal efficiency of the boiler will be reduced. In order to maintain the nominal parameters of the boiler, fuel must be increased, thereby wasting fuel. About 1 millimeter scale waste fuel ten percent. 2, the heat receiving surface is damaged due to deterioration of the heat transfer performance, fuel combustion heat is not quickly transmitted to the boiler water, resulting in the furnace and the flue gas temperature. Thus, the temperature difference on both sides of the heating surface increases, the metal wall temperature, a decrease in strength. Under pressure pot, bags and even blasting will occur. 3. Reduce heat boiler output due to the deterioration of the performance of boilers, need to consume more fuel to reach the nominal rate of evaporation. However, with the increase in the scale thickness, the volume of the furnace becomes large, the fuel consumption is limited. Therefore, it is possible to reduce the output of the boiler. 4, the corrosion damage to the metal: oxygen in the water, acid, base materials will corrode the metal surface of the boiler, it is thinned, recess or perforation, thus reducing the power of the boiler, seriously affect the safe operation of the boiler. 5, in addition to improper operation Priming outside, when the boiler water contains more sodium chloride, sodium phosphate, and silicides oil, boiling or evaporation process boiler water, boiler water occurs when soap and organic base when Teng because soda will produce compost. Foam liquid surface, formed soda pool. No softening, easily scalable. Due to the continuous evaporation steam, boiler of calcium, magnesium, high impurity concentration is 30-50 times that of natural water, fouling rate beyond our imagination, only six months to a year, from 1-2 mm.

Shanxi Province is located in China's western areas north of the Loess Plateau, the terrain finished solid, rich products. Thanks to energy supply and price advantage of coal, coke, metallurgy, electric power and other coal industry, the rapid rise of the formation of Shanxi coal-based economies of resource-based industries.

Shanxi Province, but had coal and Xing, but also because of the coal and sleepy. According to the report, "2017, Shanxi Province, coal accounted for the proportion of energy consumption up to 84.6%, higher than the national average of 24 percent, it is 2.9 times as much as the global average of Shanxi to 1.6% of the national land area, consuming about 10% of national coal amount. for Shanxi, winning the battle of blue sky, coal pollution can be effectively controlled is the key.

According to the "Blue Sky Battle Shanxi three-year action plan," issued in July this year (hereinafter referred to as "" Shanxi three-year action plan '') planning requirements, by 2020, sulfur dioxide, total nitrogen oxide emissions are lower than in 2015 more than 20%, compared to strive average concentration of sulfur dioxide in 2015 fell about 50%. Among them, 2020, total coal consumption in 8 cities in key areas to achieve negative growth, the province's coal consumption in primary energy consumption share dropped to 80%, the proportion of the province's coal consumption of coal accounts for more than 55%.

According to Shanxi Province Bureau of Statistics latest data, as of the end of August this year, Shanxi Province, the outgoing power 50.67 billion kwh, up 21.1%; the first half of Shanxi new energy consumptive power grid to complete 15.6 billion kilowatts, an increase of 58.2%, new energy abandoned consumption fell 90.6% year on year, abandoned electricity rate fell 10.2 percentage points.

The past two years the province shut down 52 coal mines, quit production capacity 45.9 million tons, subtract coal production capacity of 9.25 million tons per year, the completion of energy-saving 18 million kilowatts of coal-fired power plants, coal-fired power plants province's average coal consumption of electricity of 320 grams per kilowatt-hour of standard coal. In the first half of this year, the province's above-scale industrial Shanxi coal industrial added value increased only 0.8%.

SUMMARY gas steam boiler parameters maintenance gas boiler twice monthly maintenance inspection item A. Fuel supply line: a filter cleaning gas oil; ignition gas conduit 2 airtightness inspection; 3 checks whether the flow line... B. inspection of the instrument: a flushing water table; 2 Syphons flushing; valve experiment. C. Check burner:.... The flame detector (photocell) cleaning the light receiving surface; second inspection oil pump pressure is normal; 3 checks the combustion flame is normal; 4 check burner, the burner sound is abnormal; 5 Cleaning revolutions cup; 6 o'clock washing water rod. . Check D. Intake system: a washing water filter; 2 reaches rated pump head and flow; 3 a check valve is working properly... E. daily drainage tank and the cleaning debris. Water quality testing, water testing furnace. F. Check the combustion consumption is normal. Every three months in addition to the maintenance items plus the inspection item inspection items: Electric Part A: 1 line is loose aging, failure; 2 check the reliability of electrical components, overload; Protection relay 3 is normal; B.... open soft low deactivation tank valve exclude sludge; C to test the boiler and then point interlocking means: 1. low water position; overpressure 2; 3 flameout 4. The exhaust gas temperature ultrahigh; D. et quality tobacco. detection: analysis of tobacco smoke constituents comprising temperature detecting tail, combustion is working properly checked. E. burner and boiler cleaning outer cleaning. Paul A. large projects each year hosts a body part of a comprehensive clean-up tobacco pipes, water pipes, front and rear smoke box, part of the furnace and the burnout chamber and smoke tubes ash collection. 1. inspection openings comprehensive inspection hole hand hole, manhole sealing soundness, and timely replacement of defective seals. 2. The overall comprehensive testing instruments, valves, comprising detecting pressure gauge and safety valve, the pressure controller and the electrode level controller tuning. Part B. burner: Burner cleaning turn round cup, ignition means, filter, pump, motor and impeller systems, throttle link means to add a lubricant. Re-awarded for combustion testing. C. access control section detecting electrical components, control lines, the control box clean ash collection, each control point is detected. D. water supply system maintenance water treatment plant to check whether water quality standards, a comprehensive clean soft water tank, to check the functioning of the pump and lift, clean check valve spool and so on.

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