15 mw hot water boiler

To get the boiler not only concerned with the safe use of the boiler itself, but also to develop appropriate systems and boiler room operators. 1, boiler room boiler room safety management system is one of the vital sectors of the use of the boiler unit, in addition to the boiler room workers, leaders and security production management personnel, other related personnel without the approval of the leadership will not be admitted. Duty personnel to remain at their posts, vigilant and strictly implement security technologies and procedures tour inspection system. Non-staff are not allowed to switch the various valves in the boiler room, the smoke damper and electrical switches, undocumented fireman, water quality laboratory personnel are not allowed to operate separately. During operation of the boiler and pressure fire, door locks and latches are not allowed to live, someone to monitor pressure during the fire. Boiler room should be equipped with fire-fighting equipment, carefully managed, it should not be moved or used for other purposes.

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.

By the end of 2016, the State Council issued separately "" Thirteen Five "environmental protection plan" and "" Thirteen Five "energy-saving and environmental protection industry development plan", environmental planning and environmental protection industry to make guidance. During the two sessions this year, environmental protection is also a hot topic. Policy of continuous progress, and constantly increase investment in environmental protection efforts, more and more industries engaged in environmental construction. In the pharmaceutical industry, pharmaceutical equipment associated with its environmental protection has also been vigorously sought after by the market, the drug manufacturing must seize the favorable policies, increase research and development of energy-saving, environmental protection, pharmaceutical equipment.

In the pharmaceutical industry, industrial steam and pure steam is essential production conditions, mainly heating and apparatus for sterilizing products. The main steam from natural gas and other fuels to generate heat in the boiler, and the boiler consumes a lot of fuel per year. Currently, many enterprises will be condensed water vapor produced direct emissions, which not only pollutes the environment, but also lost a lot of heat and precious water resources. If we can be recycled, either generate economic benefits, can also protect the environment.

For a long time, boiler manufacturing industry has been committed to upgrading boiler welding technology to improve the level of boiler manufacturing technology, especially in recent years, domestic production of boiler equipment companies are active in technological innovation, and the introduction of new equipment, new technology to promote advanced welding to accommodate boiler capacity, and the parameter variations furnace, boiler meet the complex structure of the new materials and the welding member boiler.

Experts said boiler technology has made some progress, but the low efficiency of industry resources are distributed, disorderly market competition, product less competitive and other issues also plagued the entire boiler industry. Boiler welding technology, while progress has been made, but the level of automation of welding part of the product to be improved, welders welding quality is good or bad is still dependent on the technical level.

Market demand, the major boiler manufacturers are actively cooperate with professional welding equipment manufacturers to develop new welding equipment and welding technology. In recent years, China's major boiler plant are actively carry out technical transformation, the introduction of new technology and new equipment, and actively implement new advanced welding technology, adapt to changes in the parameters of boiler capacity and the furnace, boiler and boiler components to meet the complex manufacture of new materials requirements.

Insiders said that in terms of stabilizing the economy and achieve long-term sustainable development, energy saving and environmental protection industry is an important force. After the new GMP implementation on some equipment and production conditions put forward higher requirements, how to meet the production requirements of the premise, as far as possible to reduce energy consumption, which has become a headache problem of large pharmaceutical companies. Use energy boiler system is an effective way in the pharmaceutical industry to achieve energy saving, reduction of pollutant emissions fog.

Changing and blessing, natural gas fuel development and application of national energy saving policy of energy supply system will enter a period of rapid development, coal-fired industrial boilers will gradually withdraw from the center of town. Launched around the "coal to gas" and other policies is to verify this fact. In the context of social development, boiler manufacturing industry must adhere to market-oriented strategy to develop science and technology as a weapon boiler, under the guidance of relevant national policies, enterprise architecture and product structure adjustment, to obtain long-term survival and future development.

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