Gas chain grate industrial boiler in koreput into hotel full of water occurs, the occurrence of how to deal with gas boiler filled water, a high level alarm will sound an alarm level signal, beginning with the water vapor, decreased steam quality, increased salinity, superheated steam temperature drops. Severe full of water, or even furnace water into the steam line, steam line caused water hammer occurs, resulting in a serious impact to the boiler. When full of water for the boiler this situation occurs, fast Boiler summarize the following knowledge points, for your reference. First, the phenomenon when the boiler is full of water 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 pipes water hammer; 4, the normal water flow is not greater than the steam flow. Second, a full water Boiler feed water is automatically jump manually, resulting in abnormal increase of water supply; 2, or drum set on the safety valve steam header, resulting in up water or with water; 3, ultra-evaporation boiler load more, happens priming. Third, the full boiler water treatment 1, boiler steam pressure and water pressure to normal, while the drum water level rises, exceeds + 50mm, should take the following measures: wash drum were compared with the two water gauge to check their instructions are correct. Water supply from the automatic to manual adjustment, and shut off the manual door small total feedwater adjusted to reduce the amount of water to the door. 2, if After the treatment, the inner drum water level is still rising, exceeds + 75mm, the following measures should be: open the door for emergency drain drum should be put to the normal water level water level shut down immediately. The steam temperature condition, turn down or turn off desuperheating water door, door open and main steam superheater tubes hydrophobic hydrophobic gate. 3, when the boiler full of treated water drum water level continues to rise, and exceeded the upper drum level table when the water level is visible, the need for emergency shutdown, as soon as possible with the main pipe splitting, immediately stop the water, recycled to open doors, to strengthen boiler drain, and note the emergence of drum water level gauge upper water level, the water level to be put to the normal level after closing. After the normal Standby furnace, obtain professional fireman who consent, it may furnace stoked operation. 4, such as the water level in the steam drum water level tables invisible, not in time, should take the following measures: wash drum were compared with the two water gauge, check if the indication is 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. 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. When the water level in the boiler accident occurs, it is difficult to judge if the water level should be shutdown immediately. After a boiler shutdown called water method called water, check the water level in the drum.
Economic interests condensing chain grate industrial boiler in koreput into hotel: condensing boiler can be recovered fuel type and boiler water temperature and how much water vapor latent heat boiler flue gases are using. When the ordinary recovery boiler combustion gas without condensation, the heat efficiency of the boiler if the calculated calorific value of the fuel was 90%, the use of condensing heat recovery unit, the exhaust gas temperature down to 30 ~ 50 ℃, the thermal efficiency will be increased to about 107%. In the case where the fuel consumption is constant, the lower the heating system return, the more condensing heat recovery heat recovery, the higher the thermal efficiency of the boiler. A boiler to provide heat for the winter the water conditioning water ring, which heating hot water temperature is 25 ℃, condensing boiler using a considerable saving than the conventional hot water boiler operating costs. 1 million kcal / h boiler, for example, natural gas consumption of the conventional type boiler 126.5Nm3 / h (natural gas low heat value 8500kcal / Nm3), consumption of natural gas condensing boiler 110Nm3 / h, when the boiler is operating 10 hours a day, heating period is 100 days, then, a condensing boiler using natural gas 16500Nm3 savings per year, using natural gas meter price 1.8 yuan, an annual operating cost savings 29,700 yuan.
Handan: Before the end of October to complete the transformation of more than 10 tons of steam gas chain grate industrial boiler in koreput into hotel burning low nitrogen
A few days ago, Handan City issued "on the deadline to complete the nitrogen oxide gas boiler governance" (the "Notice"), clear objectives, tasks nitrogen oxides governance gas boiler, expected to be completed more than 10 steam tons of gas before the end of October this year, low NOx combustion boiler reconstruction. "Notice" to the objectives and tasks of nitrogen oxide gas boiler control, time requirements, safeguard measures have been clearly defined.
First, the implementation of the transformation of ultra-low emissions
By the end of June 2020, the existing non-electrical gas steam boiler, hot water boiler, Stoker stoker furnace and completed the transformation of a low nitrogen combustion, soot, sulfur dioxide and nitrogen oxides reach 5mg / m³, 10mg / m³ , 30mg / m³, the new gas combustion boiler synchronizing means and is mounted low nitrogen meet emission standards. 20 tons of steam / hour or more gas-fired boiler installation atmospheric pollution automatic monitoring facilities, and networking with the environmental protection department, install a distributed control system (DCS system). 20 t steam / hour to be mounted gas-fired boiler exhaust gas nitrogen oxide analyzer.
Second, the phased completion of the task of transformation of governance
10 before the end 2018, to complete the combustion of the transformation Boilers nitrogen over 10 tons of steam, to complete the 1-10 tons of steam (having a steam tons and 10 tons of steam) combustion transform low nitrogen gas boiler before the end of October 2019, 2020 at the end of 6 before completing the transformation of low-nitrogen combustion gas steam boiler 1 ton. Counties (cities, districts) according to the actual situation, to be completed in advance of nitrogen oxides governance gas boiler.
Third, both subsidies and penalties
"Notice" requirement for acceptance of project management, to give appropriate subsidies comprehensive financial subsidies to control air pollution. Due to the unfinished task of governance be ordered to stop production of governance. For excessive emissions, fraud, unauthorized outage environmental protection facilities, waste-water treatment snuck issues such as rectification and punishment according to law; wrongdoing, be held criminally relevant personnel.
Testing of welded joints of gas-steam oven steam oven gas requirements of welded joints testing requirements are listening to the views of the relevant units, based on the provisions of the relevant specifications and reference made. This procedure is not a gas phase and a liquid phase furnace furnace testing requirements are proposed, but to present different requirements depending on the pressure element. 1. A vertical gas steam drum furnace girth welds, seam head as a radiation or ultrasonic waves of at least 25% ray detection, substantially existing steam chain grate industrial boiler in koreput into hotels and hot water boilers procedures consistent with the requirements, increased only allows for ultrasonic waves of at least 25 % of prescribed ray detection, and version 80 as steam boiler code requirements. Such ultrasonic waves of a predetermined main consideration 25% ray detection, can detect the presence of defects in the weld, meet safety requirements, and can reduce the production cost. 25% of the longitudinal seam ray detection must include cross-linker and a girth section. 2. For testing butt joint pipe heating surface, where heat is different according to each request. Different heating means by radiant and convective heat. In the draft, and 25% were defined as 10% of random testing. Feedback back in, some units considered low requirements, proposal to change, and 50% is appropriate; some units believe that this requirement can also be lower. After analysis, we adopted an opinion, not less than 10% of the radiant section ray detection checks; convection section of not less than 5% radiographic inspection checks. The main consideration butt weld heating surface prescribes the use of gas welding, quality can be guaranteed. The present specification further calculation and sampling rate testing method makes provision to make this procedure more operational. 3. In addition to gas steam boiler drum furnace gas should be mechanical tests, the furnace drum and all the liquid organic heat carrier furnace heating surface tube, pipe butt joints are not required mechanical tests. Therefore, the present production procedure drum furnace gas only make a check each of ten test panels. Other cases are not required to do testing test panels. The main consideration is relatively low liquid pressure furnace, while the present specification welding method does not only clearly defined, but also for the welding procedure requests, can guarantee the quality and properties of the weld.
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