10 tons of gas hot water horizontal single drum package boiler depreciation calculation
Depreciation of fixed assets is due to the gradual wear and tear in the course of the transfer of goods or the cost of that part of the value to go, but also business due to the use of fixed assets and share in the production process over its useful life of fixed assets cost money.
10 tons of gas hot water boilers are industrial boiler, equipment belonging to the class. In accordance with the Enterprise Income Tax Law, depreciation of fixed assets a minimum period of 10 years, residual rate set at 5% or 10%. If the 10 tons / hr of a gas hot water boiler for heating use, should process equipment, mutatis mutandis, the age of 10 years. In calculating the depreciation of fixed assets, in addition to foreign-funded enterprises to deduct the residual value according to the proportion of 5%.
Gas horizontal single drum package boiler is operating at low load, how to do the boiler load is the ability of a boiler to generate steam in a unit run time, from another point of view, is acting within the boiler work, the more shows that the boiler unit of time in a high-load condition, the unit of time It indicates that the boiler is acting at least low load conditions. To ensure normal operation of boilers, combustion systems and circulation system should remain stable state, according to the operational standard in terms of the boiler, the boiler should not be a long period of evaporation to 50% or less of rated load. 1 harm low load operation, affect the normal operation of the boiler: the combustion unstable, difficult to adjust the control returns, may cause a sudden turn off the boiler. 2, affecting the life of the boiler: low load combustion gas and smoke emission inputs unbalanced situation may occur, so that uneven heating of heat exchange tubes, pipes easily lead to local overheating, causing overheating of the wall, will increase the long-running the probability of occurrence of burst pipes. 3, could easily lead to pipeline corrosion long-term low-load operation, the exhaust gas temperature will decline, increasing the low-temperature corrosion of heat exchange tubes arranged in the tail of the probability of occurrence. 4, affect the boiler thermal efficiency: low load operation of the furnace will reduce the temperature will result in incomplete combustion, boiler efficiency. Low load operation handle 1, gas boiler is found to always pay attention to changes in boiler pressure lower loads, fire control, and air volume ratio, so that it is operated at a predetermined pressure, over-pressure, over-temperature operation will not recur . 2, fireman should open the recurring pressure gauge, pressure gauge flushing the trap, to prevent clogging; Rinse once per shift pressure gauge, to prevent false water level. 3, always pay attention to changes in boiler water level to keep it at a normal level, prevent the emergence of the boiler dry. 4, the protection of the safety valve is the last line of defense after the failure of all automatic protection instruments must be checked regularly, once every two weeks to manually open the vent to prevent rust. 5, when in the low-load operation, but also noted that the use of gas, to increase or decrease the amount of gas introduced into the actual situation, to ensure full combustion of gas.
SERVICE NOTE gas steam horizontal single drum package boiler Gas steam boiler due to the relatively high degree of automation, it is generally not a big problem arises in the course, but in boiler repair, maintenance process should pay attention to a few issues, particularly burner maintenance is the highest scientific and technological content of equipment inside the boiler, we require professional repair. Gas-fired boiler in the course to observe the operation of the pipe missing, once problems should be promptly replaced maintenance, preventive measure. Check content key: the check gas boiler pressure inner and outer surfaces of the metal element, the particular inspection opening, welding seam, side panels and other corruption cloud presence or absence of cracks; check boiler water cooled furnace wall, etc. with or without fire tube rot turbidity and bending deformation; check presence or absence of a basic welding seam brittle, whether the water leakage at the seams; check rot cloud, broken. Equipped with bracing parts, since the invasion of leakage turbidity scale and soda, is likely to cause weakening of the structure of a modified unreasonable or boiler should be checked one by one; check presence or absence of the gas boiler through the inflation port expansion phenomenon; by pressing parts for depression, bending and thermal deformation phenomenon.
Shandong Zhaoyuan Mining Group Co., Ltd. is a large state-owned local asset management companies, gold mining dressing and smelting for leading industries, operates in the area of tourism, services, precious metals, real estate, eco-agriculture, with total assets of 10.2 billion yuan, Shanghai gold Exchange is an international provider of standard gold bullion. July 2017, Shandong Mining Group and fast horizontal single drum package boiler steam signed a 0.5-ton electric heating steam boiler which mainly produce steam for metallurgical mineral processing and other manufacturing processes, energy defeating small, strong ability to supply steam .
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