coal fired steam boiler with good service
Learning materials heat boiler 1, the boiler is three safety accessories: water gauge, pressure gauge, safety valve. 2, the normal operation of the boiler water level is 0 ± 40mmH2O, the maximum does not exceed 0 ± 80mmH2O, the normal water pressure of 5.5MPa, to allow the fluctuation range of 4.5-6.0MPa, normal pressure boiler feed water temperature should be 105 degrees Celsius. 3, steam flow is not larger than the normal water boiler feedwater flow reasons, the measuring device instrument to do so. 4, the steam flow rate is less than the abnormal overheating damage reasons of water flow, water wall damage, damage to the economizer, the boiler is full of water, measuring device instrument to do so. 5, points on the furnace process CCP washed three times water gauge, pressures of 0.05-0.1MPa, 1.0MPa, 2.8MPa. 6, it is determined whether the normal water table and put into operation to see if the water level fluctuates slightly exemplar. 7, the boiler water pressure test and the test is divided into P overpressure test of two, when the water pressure P test, the boosting speed of not more than 0.35MPa 0.5MPa down rate does not exceed per minute. To the boiler water blowdown 8, the pressure in the boiler shutdown boiler water temperature drops below 80 degrees Celsius. 9, the position of each ordinary pressure test is hydrophobic doors: a door opening, the second door is closed. 10, the boiler-burner with a swirling-type and DC type two. 11, elemental analysis of coal with a composition: C, H, O, N, S, moisture, ash. 12, the main component of the blast furnace gas is: CO.'S time, nitrogen gas, blast furnace gas pressure is lower than 1500Pa, the user must reduce the amount of gas. Fire stop its pressure 1000Pa, working pressure 4000-8000Pa, the upper limit for the dangerous pressure 10000Pa, the lower limit is 2000Pa. 13, the main component of the coke oven gas: CO, nitrogen gas, coke oven gas pressure is lower than 1500Pa, must reduce the amount of gas, which pressure is 500Pa fire stop, working pressure 5000-7000Pa, the upper limit is 8000 Pa pressure the risk, the lower limit is 1500Pa . 14, the high, the main features of coke oven gas is flammable, explosive, toxic. 15, proximate analysis of coal with a volatile content, fixed carbon, ash and moisture. 16, boiler water circulation loop fault has stagnated, cycling back down the tube vaporization, soft drinks stratification. 17, the pulverized coal burning furnace radiation heat from a heat source of flame, high temperature flue gas convection heat. 18, the pulverized coal ignition and quick combustion conditions are sufficiently high temperature furnace, a sufficient amount of air mixed well, pulverized coal and air. Enough burn time. 19, ignition of pulverized coal into the combustion stage, the combustion stage, burning ember stage. 20, boiler mechanical rolling bearing does not exceed a predetermined temperature 80 degrees Celsius, the slide bearing does not exceed 40 degrees Celsius. 21, with factors affecting the steam load boiler water, boiler water salinity, pressure change, the vapor space of the drum height. 22, the principle of the steam separator drum gravity separation, inertial separation, centrifugal separation, separation of the water film. 23, the first ignition of the pulverized coal volatiles, fixed carbon is the latest ignition, the combustion of carbon is the longest. 24, steam soluble salt contaminated steam quality reasons, mechanical carryover. 25, the normal operation of the boiler drum water level in the glass tube than the water level high 50MM, when the water level in the steam table overall door leak, the water level high water table, the total gate leakage when the water level is low. 26, a method for enhancing heat transfer with a heat transfer coefficient is increased, raising the average temperature difference between the heat transfer, the heat transfer area is increased. 27, into the boiler furnace wall refractory layer, three-layer insulating layer and the sealing layer. 28, light blue flame blast furnace gas, as a bright golden yellow flame co-firing light yellow flame, coal, coke oven gas when the combustion gas as a combustion time. 29, the boiler by the "pot" and "furnace" composition, "pan" refers to a soft drink system is mainly composed of the drum, the downcomer, the header, waterwall, economizer, superheater composition; "oven" refers to a combustion system, a furnace, a burner, an air preheater composition. Calorific value 3.27GJ 30,1 tons of steam.
Coal-fired coal fired steam boiler with good service auxiliary equipment which is the result of burning coal-fired steam boiler fuel coal fired boilers to provide steam for industrial production, with the rapid development of the national industrial production, market demand for coal-fired steam boiler gradually increased, boiler in addition to the main components, further include other auxiliary devices, such as coal feeder, induced draft fan and the like. As a supporting auxiliary equipment coal-fired steam boilers, related to an important indicator of whether the normal operation of the boiler, auxiliary equipment and its role following is a small series of analyzes and summarizes the coal-fired steam boiler: 1, fuel supply equipment: Storage and transportation fuels. 2, coal grinding and milling equipment: Pulverized coal milled to a pulverized coal burning and enter the combustion boiler combustion apparatus. 3, the wind blowing apparatus: the air blowing device is defined by the air into the blower means exports coal furnace air preheater after heating and milling. Blower device refers to the boiler flue gas discharged from the chimney draft fan and sent to atmosphere. 4, water supply equipment: water through the water treatment device processing into fired steam from the feed pump. 5, slag, dust removal equipment: Cleaner Equipment refers to the removal of ash from the boiler and carry away equipment, dust removal equipment refers to the removal of fly ash in the boiler flue gas, improved sanitation. 6, the automatic control device: automatic detection, process control, automatic protection and automatic adjustment. Advanced coal-fired steam boiler in a programmable logic controller (PLC) is the central processor of the control system. The control system via the touch screen operation, the boiler automatic control and degree of operational reliability is greatly improved, easier to use and intuitive.
It is reported that Inner Mongolia has issued a "winning Blue Sky Battle three-year action plan to implement the program," out of shutting down 300,000 kilowatts coal-fired units of non-compliance. Vigorously promote the region's coal-fired units (excluding the circulating fluidized bed and "W" Flame Boiler) ultra-low emission transformation, by the end of 2018, Wuhai City and the surrounding areas all in-service thermal power coal-fired units basically completed the transformation; by the end of 2020 before, with the rest of the transformation of the conditions to complete the transformation of coal-fired power plants all. And promote the implementation of the transformation of ultra-low emissions and steel industries.
First, the implementation of dual control energy consumption. And vigorously promote the total energy consumption and intensity "dual control" to promote the reduction of coal consumption through energy saving. Earnestly implement the autonomous region, "" Thirteen five "comprehensive energy conservation program of work for carbon reduction" and "energy saving" Thirteen Five "plan", by the end of 2020, the region's total energy consumption control at around 225 million tons of standard coal, coal accounts the proportion of total energy consumption decreased from 82.9% in 2015 to 79% unit GDP energy consumption fell 14% from 2015. According to focus on the use of coal and clean use of principles, focusing on reduction of non-coal for electricity, increase the proportion of electricity from coal, coal power accounted raise the proportion of total coal consumption to around 55%.
Second, the development of clean energy and new energy. By the end of 2020, non-fossil energy consumption reached about 25 million tons. An orderly wind power and photovoltaic power generation projects, optimization of wind energy, solar energy development layout. Increase renewable energy consumptive efforts to solve the basic wind abandoned, abandoned light problem. By the end of 2020, the region consumptive wind power capacity has reached 45 million kilowatts, 15 million kilowatts of photovoltaic power generation reached.
After the gas hot water boiler hot water boiler vaporization emergency 1. Vaporization handler circulating pump stops abnormally pump failure caused by: ① blower stops running immediately. ② immediately open the door, take measures to pressure the fire, lift the chute gate, cutting off the supply of coal grate. ③ In the case of boiler pressure not greater than 0.6MPa (600KPa), the exhaust valve to follow, only a sharp rise in pressure in the boiler deflated, used only relief exceeds 0.9MPa, and the exhaust process to be carried out slowly, prevention boiler due to loss of pressure and more violently again vaporized. ④ close the boiler water, water main gas valve. ⑤ open stop valve recirculation line, to ensure that the water supply pipe velocity convection heating surface (economizer) to prevent re-vaporization of the economizer. ⑥ The operation of the above operation, at the same time to pay the boiler to reduce the boiler water temperature and the furnace pressure. ⑦ After the boiler pressure is normal, i.e., opening the standby circulating pump, into the normal combustion. 2. Treatment failure or sudden loss of power boiler vaporization of power: ① immediately open the door, lift the coal chute slide gate to take pressure fire measures to reduce the oven temperature. ② Grate with the fastest speed in order in the shortest time to fire onto the slag tap. ③ the degree of treatment in the first case. Once a short time can not supply heating network system, antifreeze should take emergency measures. 3. Due to excessive heat boiler boiler vaporization process: ① the immediate closure of the drum, induced draft fan. ② immediately open the door, take measures to pressure the fire, lift the supply of coal chute slide gate, off of coal, while the grate into fast gear. ③ In the case confirmed the presence of water, the boiler can supply water to the boiler body, boiler out of the water while closing the main valve. ④ Open line stop valve recirculation pump to ensure water velocity convection heating surface of the pipe, to prevent the economizer again vaporized. ⑤ Open circulating pump with jog mode, jog each time less than 30 seconds, again less than one minute jog interval. Jog purpose is to reduce the boiler water temperature, while preventing a large amount of steam into the pipeline system. ⑥ back into place after the safety valve, circulating pump running, and then the normal burning stove. 4. Water boiler system run vaporization process due to water loss, loss of pressure caused by: ① immediately closed drum, induced draft fan. ② out of the water while closing the main valve and the boiler circulating pump. ③ take the same measures to cool the furnace tube described above. ④ Open stop valve recirculation line. ⑤ rely exhaust valve until the safety valve back into place. ⑥ until the boiler water temperature drops below 50 ℃, when the temperature of the furnace temperature less number 200 ℃, again within the boiler feed water, water course to be carried out slowly, to prevent harm to the boiler when the temperature is too large. ⑦ After processing leakage fault, the system time to the replenishment, and out of the water boiler always open the valve, and the circulating pump, and then normal combustion.