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For hot water boiler in industry, it grasps the heating area, the insulation effect, and can withstand the lowest temperature (winter and high altitudes need to be considered), the need to provide different types of hot water temperature, how much hot water as well as the amount of energy generated per unit time , it is a major problem. Model: CWNS2.8-90 / 70-Q Analytical Model: W = horizontal, N = combustion, S = combustion chamber, Q = gas thermal rating: 2.8MW thermal efficiency: 98% nominal water temperature: 95 deg.] C rated backwater temperature: 70 ℃ working pressure: atmospheric pressure hot water quantity: 96 tons / hour heating area: 40,000 square meters (depending on the altitude, the insulation measures, heating area will vary) Second, understand the characteristics of gas-fired boiler
1, the calculated blowdown rate: an index showing a blowdown blowdown rate, i.e., blowdown water blowdown rate (Q sewage) percentage of the amount of evaporation boiler (Q vapor) is. Expressed as follows: K = Q sewage / Q vapor × 100%. When the amount of the boiler water stable, balanced relationship according to the amount found that a substance with the water supply into the furnace equivalent amount drained waste water with an amount of saturated steam and entrained. The (Q dirt + Q vapor) × S a = Q vapor × S vapor + Q sewage × S sewage where S a, S vapor, S sewage represent the feed water, saturated steam, the content of a substance in the sewage water, in the formula S the value by the salt content, can also be a component of the content (e.g., alkalinity, chloride ion) is calculated. Sewage is K = Q / Q vapor = (S a -S vapor) / (S -S sewage to) × 100%.
2, blowdown rate is calculated to be noted that the following three points: (1) can be calculated blowdown rate alkalinity or chloride ions (chlorine ions and salinity have relatively fixed proportional relationship, usually replaced by chloride ion salinity) were calculated blowdown rate, whichever is greater final values as blowdown rate, general heating boiler blowdown rate should be controlled below 10%. (2) for a large capacity boiler, because of its good effect of water separation apparatus, the humidity vapor is minimal. Such salt content is much lower than the saturated steam to water salinity, so in this boiler blowdown rate is calculated in both the salt content of the steam can be ignored, i.e., to K = S / (S sewage -S a) × 100% (3) for most industrial boilers, especially small volume of the drum, water separation device is simple, a large amount of water with saturated steam in industrial boilers, steam wetness often around 3% (control blowdown rate comparing the range of 5% to 10%, is already not too low) salt content can not be ignored when the steam boiler blowdown rate is calculated under this condition. Since K = (S a -S vapor) / (S -S sewage to) = CL- to / (CL- -CL- to sewage) -CL- vapor / (CL- -CL- to sewage)
8 large electric water boiler in industry resolve technical advantage (1) large-screen full Chinese LCD with backlight, having a rich display function, the operating state of the boiler circulation pump and collected operating state, the operating state of the heater, boiler water temperature, level state, the current time, and alarm information is displayed accurate and intuitive. Provided by the controller operating the keyboard, and can check, modify, and set various adjustment parameters, man-machine dialogue, easy to understand, easy to learn, easy to remember, easy and convenient. (2) a digital controller with a Built-in clock, the system users can request, at day four arbitrarily set period of time open, shut down time, save power consumption and reduce the cost of using the boiler. (3) ceramic heater electric heating rods, the low heat load surface, longer life, even the layout of high thermal efficiency. Hydropower electric wall separating the heating mode, to prevent leakage safety hazards, and easy accessibility for inspection and maintenance. Stainless steel tube furnace using electric heating flange connections, easy removal, installation, maintenance, and easy maintenance. (Stainless steel electric heating tube) (4) that are arranged in electrical China Famous Brand products, Chinese brand-name products, with CE and 3C compulsory certification mark. (5) high-power multi-stage electric water boiler manually or automatically adjusting knob, the user can easily start, the number of heating rods group stopped automatically when the state, level by level controller startup, shutdown heating groups, progressive loading, off-loading step by step electric load adjustment mode, not only to ensure the normal operation of electrical appliances, but also greatly reduces the impact on the grid. (6) a heating rod made of high quality copper terminals connected to the cable outlet GB copper cables carry large loads, insulation, and durability. (7) has a water boiler, over-temperature, short circuit, leakage, phase, overcurrent protection and many other features, boilers run more stable and secure. (8) can be connected to a large storage tank boilers, low power during the night the water was heated to 95 deg.] C, heat storage reservoir, at daytime heat exchanger for heating, the grid functions as the clipping Tim Valley, running more economical.
13th of this month, Jiangsu Province, held a working meeting air pollution control, meeting the main objectives and tasks around the year, and plan the next phase of priorities, from morning to promote strict air pollution control this year's tight.
First, in-depth treatment of industrial pollution, dehumidification start off white along the Yangtze River coal-fired power project to promote the electricity, steel, cement, coke, glass, carbon, boilers, furnaces and other key industries the full implementation of the transformation of ultra-low emissions, the province basically completed iron and steel enterprises sintering machine ultra-low emission transformation, cement, coke, glass, carbon industry to achieve the emission limits set provincial requirements.
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