steam boiler capacities

The users who have used the boiler all know that the hot water boiler will be corroded when it is used for a long time, which has a great influence on the service life of the boiler. So how to reduce the corrosion degree of hot water boiler? I hope the following introduction will help you. 1. The installation of exhaust apparatus in the system of hot water boiler is helpful to eliminate the air in the hot water system of hot water boiler and the gas emitted from water by heating, thus reducing the corrosion of oxygen. 2. Water supply deoxidization: when the rated power of the hot water boiler is greater than 4.2MW, the water shall be deoxygenated; the hot water boiler with the rated power less than 4.2 Oxygen should be deaerated as much as possible. 3, control the PH value of the hot water boiler water: the PH of the hot water boiler water is controlled between 10 and 12, so that a protective film can be formed on the surface of the metal to avoid the occurrence of oxygen corrosion. Corrosion problems threaten the safe operation of hot water boiler and even affect the service life of boiler. It has become an important aspect of boiler management to prevent the corrosion of hot water boiler heating surface and increase the length of boiler service. The above measures can effectively prevent and slow down the problem of oxygen corrosion on the heating surface of hot water boiler, so as to ensure the safe operation of the boiler. .

To accelerate the low nitrogen transformation gas boiler in each area of ​​Xian, October 23, 2018, liberation of the door street in charge of leading Korean right lead a public person with low nitrogen regional transformation slow the unit door butt again, and supervise the various units to speed up progress, by the time limit to complete the task of transformation.

1, Imperial Square area, parking building, Suntech Lane three projects reflect seven plots site inspections carried out two times, road construction site clean and moist, well-covered, site supervision and regular opening spraying dust and other facilities, strict implementation of air pollution control measures.

2, the region west of Seven Road, Sheung Tak Road, west along the eight dining pollution checks to ensure that all food and beverage outlets normal use of fume purification facilities, and urge all stores on a regular basis to do routine maintenance.

As a kind of special equipment in industrial production, boiler has a very comprehensive standard and system. The reason is very simple and dangerous, and the consequence is very serious. Strengthen management, guarantee safe production, is the enterprise must do a good job. In order to prevent the recurrence of similar tube burst accidents, combined with many years of operation management, analysis and summary of this tube explosion accident, we realize some enlightenments for the operation and management of boiler reference.

1) the operating procedures shall be strictly followed in the management of operation. The operation procedure of boiler makes clear the concrete procedure of boiler operation, and it is the basic guarantee of boiler safe operation. Operation behavior meets the requirements of the regulations, boiler operation in accordance with its own operation law, can run safely.

2) strengthen the boiler water quality management to ensure that the boiler water meets the water quality requirements. There is a misconception that boiler scaling will not occur if the water quality of the boiler is qualified. After these calculations, although the water hardness of the boiler is ≤ 0.03 mmol / L, the residual hardness still exists here. In the operation of the boiler, the residual hardness will accumulate in the form of scale in the furnace tube. After the explosion of the boiler tube, we tested the boiler water, and the hardness did not exceed the standard. In our day-to-day management, there are special personnel responsible for boiler water quality testing, to do one test per shift, technicians regularly sampling, all meet the requirements. But most The end result was a problem. Therefore, in boiler water quality management, the hardness of boiler water should be reduced as far as possible, the residual hardness should be reduced, and the harm to boiler should be reduced.

3) strengthen the annual maintenance work of boiler. After a hot-water heating boiler runs for a heating cycle, It is necessary to carry out the annual inspection and repair work. The maintenance work is very important to the subsequent operation of the boiler. In addition to ensuring that all parts of the boiler are in good condition and meet the requirements through maintenance, it is also necessary to focus on dredging the boiler tubes and make sure that each tube is unobstructed in order to ensure the smooth circulation and at the same time, This can also remove loose polymer in the tube.

4) in view of the structural characteristics of the boiler itself, corresponding measures should be taken to confirm the boiler's state. The 14MW hot water boiler, due to its own structural characteristics, adopts the partition made of steel plate, and divides the internal flow of the boiler into three series processes. Because the partition plate is welded and sealed, the difficulty of overhaul increases, and the partition board is not regularly cut. The furnace tube was dredged and accumulated, and the scale was thickened year by year. Finally, the furnace tube was completely blocked and the furnace tube burst accident occurred. In view of this particular boiler structure, it is necessary to make the determination to cut the partition regularly, carry on the inspection of furnace tube, dredge and so on maintenance work, make sure Keep in good condition, lay the foundation for safe operation.

5) make annual inspection in accordance with the requirements of boiler supervision regulations. This annual inspection shall be carried out by a qualified unit or agency to verify that the boiler meets the requirements for safe operation and that the inspection report is available. Although the annual inspection of the 14MW hot water boiler has been carried out, however, the annual inspection is, after all, a routine inspection, although the intact condition of the pressurized components of the boiler body, the internal corrosion situation, the water-cooled wall tube, the convection pipe bundle, The walls of the furnace have been thoroughly checked, but the scale is often difficult to judge. In spite of this, such tests can well prevent defective boilers from being put into use. The accident happened.

6) regularly carry out boiler chemical cleaning. This 14MW hot water boiler, which has been in operation for more than 10 years, has not been cleaned for a very simple reason. During the maintenance and inspection of the boiler every year, no scaling was found in the opening of the visible part of the furnace tube (convective tube, water-cooled wall tube). It's very clean, so no chemical cleaning has been taken. It is analyzed that the area where boiler fouling is more serious is usually in the boiler high temperature area, but this part of furnace tube can not be judged by conventional means. At present, although there are advanced speculum, but in the actual operation management, the production unit configuration of such equipment is very few. Then, take regular cleaning The measures can effectively reduce the fouling in boiler tubes and avoid similar accidents.

7)strengthen the protection of high temperature parts of boiler. This 14MW hot water boiler is the detection point of furnace temperature, that is, the highest temperature at the end of the combustion chamber, which is the combination of convective heat transfer at the end of the combustion chamber. At the same time, it is also the beginning of convective heat transfer. Therefore, the radiative heat transfer and convective heat transfer in this part are very strong in boiler operation, and the result of this accident shows this problem. In the process of boiler installation or maintenance, special attention should be paid to this point. High temperature resistant materials can be used for proper heat preservation treatment of this part of the furnace tube, so as to reduce the heating strength of the furnace tube and slow down the scaling rate, which is positive for the prevention of similar accidents. With.

Also, the modular boiler control system, highly intelligent. To fast boiler's latest "Euromonitor series" for example, the boiler can achieve 24-hour open, with changes in output load can always adjust the heating demand, although the boiler runs 24 hours, but due to the high efficiency boiler thermal module, with start and stop frequently than in the boiler will be more energy efficient.

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2019-12-6 · Boiler Feed Pump (BFP) Ebara Engineering Review No. 251(2016-4) 12 followed by many units with a capacity of more than 1000 MW built after 1990. Looking at the steam conditions, Japans first boiler with a steam pressure of 16.6 MPa (at the inlet of the turbine) was fabricated in 1959. In 1967, Japans first

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2019-11-29 · Large boiler capacities are often given in lbs of steam evaporated per hour under specified steam conditions. BTU - British Thermal Units. Since the amount of steam delivered varies with temperature and pressure, a common expression of the boiler capacity is the heat transferred over time expressed as British Thermal Units per hour.

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2019-9-11 · 4.) maximum steam generating capacity in pounds of tonnes per hours.This term is the most informative and easiest to understand if it refers to steam properties the boiler is designed for. (Large boiler capacities are often given in lbs or tonnes of steam evaporated per hour under specified steam conditions, for smaller boilers capacity is

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2019-9-11 · 4.) maximum steam generating capacity in pounds of tonnes per hours.This term is the most informative and easiest to understand if it refers to steam properties the boiler is designed for. (Large boiler capacities are often given in lbs or tonnes of steam evaporated per hour under specified steam conditions, for smaller boilers capacity is

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2019-2-22 · steam boiler capacity unit zg boiler efficiency What is the boiler capacity unit science.answers.com Boiler loads, or the capacity of steam boilers, are often rated in boiler horsepower, lbs of steam delivered per hour, or BTU. Large boiler capacities are often given in lbs of steam evaporated per hour under specified steam conditions.

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