manufactures of boilers

How full manufactures of boilers water treatment? 1, the boiler is full of water refers to: (1) the water level is not visible or not, a high level alarm; (2) steam temperature decreases, main steam isolation valves and the turbine inlet valves visible white steam; (3) turbine or steam pipe occurs water hammer; (4) water flow is not larger than the normal steam flow. 2, causes: (1) water supply is automatically jump manually, resulting in abnormal increase of water supply; (2) safety valve on the drum or steam header, resulting in up water or with water; 3) evaporation boiler more overload occurred priming. 3, processing method: a boiler steam pressure and when a normal pressure, the drum water level rises, exceeds + 50mm, the following measures should be taken: (1) the flushing drum were compared with two level table to check instructions are correct. (2) from the automatic to manual adjustment of water supply, water supply and close the door manually turned down and to reduce the total water supply amount adjusting gate. If after treatment b above, within the drum water level is still rising, exceeds + 75mm, should be carried out the following measures: (1) to open the door for emergency drain drum should be put to the normal water level water level shut down immediately. (2) The steam temperature, the heated reducing or closing off the small door, door open and main steam superheater tubes hydrophobic hydrophobic gate. When the treated drum water level continues to rise, and exceeded the upper drum water level meter water level visible, on emergency shutdown, as soon as possible with the main pipe splitting, immediately stop the water, recycled to open doors, turn on the water to strengthen the boiler and steam drum note an upper level of the water table appears to be put to the normal water level off. Standby furnace often the case, the value of the long obtaining consent, according to Stoke furnace operation. C If the drum can not see when the water level within the water table, not in time, should take the following measures: (1) were compared with two wash drum water level table, check the instructions are correct. Full drum water level tables turn on the water door, turn on the water and then slowly close its doors, as there is water in the water table appears, and water levels continue to rise full of tables full of water and has not been proven boiler water level gauge steam over the side of the tube, press the emergency shutdown process. (2) open the door turn on the water table level, and slow to close its doors after the turn on the water, the water level in the water table invisible. To prove a serious full of water, soda and then close the door, turn on the water to open the door, the water level of the water table memory after the release to do, turn on the water shut the door immediately. Ajar quickly and valve inner water table level occurs, and filled with water, before this time has exceeded the determination level of the steam drum level side through the tube sheet, emergency shutdown should be treated as soon as possible and the manifold splitting. (3) When the water level in the boiler accident occurs, it is difficult to judge if the water level should be shutdown immediately. After the shutdown called by the water method called water, check the water level in the drum.

Autumn occasion fruits. September 2 this year, China-Africa Cooperation Forum Beijing Summit smooth opening of the meeting, determine Dongfang Electric Power signed with Egypt Egypt Hanna Wei six 1100MW of clean coal combustion and coal pier supporting the EPC project general contract. The project is currently the world's largest clean coal projects, but also Chinese enterprises for the first time will have ultra-supercritical clean coal technologies with independent intellectual property rights to the world.

1100MW, is the world's largest single coal units capacity. Egypt Hanna Wei 6 × 1100MW coal-fired power plant will clean 6 stand-alone capacity of 1100MW coal machine components, which will become the world's largest clean coal power plant. The total size of the project is about $ 4.4 billion. Joint venture will work final contract negotiations and other business and financing as soon as possible with the Egyptian company.

The project won the bid total amount (by share of joint venture company 50% equity share calculation) accounted for about 18% of the company's 2017 annual revenue, the company will confirm the actual sales income in accordance with the implementation of the project.

The project will be built in the Red Sea tourist area, demanding for clean and green. The power plant project hosts supplier Dongfang Electric and Shanghai Electric said its independent research and hosts will use the world's most advanced high-performance ultra-supercritical power generation technology and near-zero emissions of environmental technology. Advanced technology is mainly reflected in the high-efficiency coal-fired power generation. From the current standards, the national coal requirements will kilowatt needed to control the 300 g or less, and this project per kilowatt coal consumption less than 280 grams, the thermoelectric efficiency of up to 45%.

Egypt was among the first to support one of the countries "along the way" initiative in China. The project will also "along the way" along the clean coal-fired power station construction played a good role model, and further promote the high-end manufacturing to promote the development of China's power sector outwards.

Coal-fired power plants is an important part of China's power industry. The use of water in the electric power industry are many, including manufactures of boilers makeup water, cooling water, domestic water and other miscellaneous fire. The most stringent water quality requirements is to supplement water boilers, thermal power plants now toward high-capacity, high-parameter development, water quality of boiler water getting higher and higher, boiler feed water quality requirements are very strict, not only requires low hardness, dissolved oxygen minimal, solid content and organic matter content is minimal, water supply and water did not meet the standard will enable the safe and economic power plant equipment can not run, so in addition to conventional coagulation, sedimentation, filtration and other treatment methods, ion exchange needs , re-bed, mixed bed, reverse osmosis water desalination systems, softening electrodialysis, desalination water systems high, ultrapure water treatment equipment to handle the heat and power plant technology pressure boiler feed water. To this end we have developed a variety of water quality indicators of thermal power plants.

Maintenance Maintenance of gas-fired manufactures of boilers plant food plant food plant food gas boiler gas boiler in use after a period of time, it should fireman job in a gas hot water boiler maintenance, gas hot water boiler maintenance is to better jobs and can extend the use of the period, we organized here several maintenance approach, we expect to have help. First, the food factory gas pressure boiler for the production of spare boiler maintenance or outage for a short time does not exceed the boiler overhaul of the week. ①, after the shutdown of the boiler water all exhausted, the scale furnace, slag finishing clean, re-qualified to participate in demineralized water. ②, the timing small flame, or the timing of the use of water vapor adjacent to the boiler furnace, the furnace so that the temperature of the water in the boiler should adhere to the summer ambient temperature of about + 10 ℃, winter should ensure that water does not freeze the furnace, all blocked vent valve, drain valve and release valve to prevent leakage. ③, the timing of boiler feed water, adhere to the boiler pressure 0.05MPa ~ 0.1MPa avoid air entering the drum. Second, the food factory wet maintenance Wet maintenance is generally applicable to gas-fired boiler shutdown boiler maintenance time does not exceed one month. ①, after the shutdown time exhausted by the rules furnace water, scale, slag, ash eradicate clean. ②, closing all manholes, hand holes, valves, etc., and the boiler operation completely blocked. ③, producing an alkaline solution by qualified maintenance demineralized water, boiler water per ton of sodium hydroxide participate Na (OH) 8kg ~ 10kg, plus or sodium carbonate (NaC03) 20kg, plus or sodium (Na2P03) 20kg. ④, with special care and pump fabricated alkaline solution into the boiler. ⑤, when the solution is maintained all the injection, the valve is open to the passing of demineralized water filled boiler, until the water overflows from the air valve is stopped, and then closing the air valve to the valve and open a dedicated pump cycle, a uniform mixed solution. ⑥, the duration of the maintenance, the timing should adhere to the outside with Weihuo oven dry heating surface, the open timing of the pump cycle, the concentration of the solution and over a common, but also the assay solution were taken periodically and make up liquid, PH value of the solution at 10 ~ 12 between ensuring boiler water alkalinity. ⑦, in the winter freeze to adopt appropriate measures.

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