In Pakistan, their have a rich coal resource, so, as Pakistan company, they can use coal as fuel material to heating boilers. Besides, this 10 ton chain grate coal fired steam boiler also can using different biomass as fuels, like lees, wood chip, rice husks, palm shell etc.
Due to the overall demand for energy conservation and emission reduction and air pollution control, clean heating is gradually emerging, and the demand for clean heat sources is growing. The application of relatively mature and convenient natural gas heating in clean energy heating is hindered by the shortage of gas sources. Biomass type and cost of biomass boilers can be used to replace heat sources such as coal-fired boilers due to their low cost and flexible application.
China's industrial gas type and cost of biomass boiler energy-saving technology path outlined China's industrial gas boiler energy-saving technology is the common path of the following two: A phase-out of scattered small boilers, combined heat and power generating switch to district heating. B. of 2-10 tons and even more part of the coal-fired boiler of natural gas, clean energy transformation of raw materials, electricity and so on. The ultimate goal of both techniques were replaced by new energy path for coal, combined with lower energy consumption part of the measures to local conditions when due. Where coal to electricity in the current case by the subsidies countries will be relatively large, relatively rich in power resources area, consider rack power grid, conducted to electricity coal boilers boiler, doing so on the one hand can reduce not meet the on provisions small boiler operation resulting energy waste, on the other hand can reduce the emissions of nitrogen oxide and the like, can be said to have the advantage of its presence; as coal gas, is commonly used as a transformation method, gas boiler with a clean and environmentally friendly features, thermal efficiency than coal-fired boiler has a huge advantage, and security is relatively high, in principle, the cost will naturally be much higher than the cost of coal, but with the current low nitrogen condensation technology increasingly the more advanced, gas-fired boiler in large cost savings in the process of running, it is a comprehensive and long-term benefits of view, but also more cost effective. Of course, the industry also has a coal boiler biomass transformation, it would be a transformation of the way local conditions, as to the effectiveness of the transformation, will have to analyze the actual operating efficiency and operating costs. In short path technology transformation of the industrial gas boiler has a lot, which is more suitable for the specific nature of the measure should be based on the actual situation, customer needs, requirements and standards of other countries, no matter how change, in terms of industrial processes want nothing more than lower energy consumption, reduce costs, reduce emissions, improve the efficiency.
At 10:00 on September 6 and more, Harbin, a business is the purchase of a new type and cost of biomass boiler equipment installation, commissioning process when staff at a boiler pressure gauge index found that the performance of the boiler abnormal, but not so the commissioning personnel when the next step, a sudden loud noise, boiler explosion, a huge flame and furnace pressure debugging of oil spray everywhere, four commissioning personnel are subject to varying degrees of injuries, was taken to hospital for treatment .
Boiler is an energy conversion device, by entering the fuel to the boiler, chemical energy, power, etc., outputs a constant steam heat, hot water or organic heat carrier, to provide support for the heat industries. Meanwhile, the boiler is also a special equipment has a certain risk, when the boiler installation, commissioning, operation, etc., be sure to boiler operation safety first.
Now, Xiao Bian to operational safety considerations gas boiler summarize, we can refer to.
First, start, boost, steam supply
1, before the start of the preparatory work
Internal and external check: Check boiler, burner, a good state of the accessory device; action safety accessories, each of the valves, such as flexible instruments, the correct position.
Check the line voltage to meet the requirements, a variety of normal switch position, respectively, various auxiliary pump starts operating, the burner fan, oil pump is normal.
Boiler Feed: exhaust valve opening, to ensure the normal water level (just below the water level).
Firstly purging the furnace, induced draft fan suction time is usually about 10 minutes to ensure that no residual gas in the furnace, passing substitutions, and ignition for combustion air supply.
After firing is completed according to the adjustment amount of load required for combustion, the boiler into normal operation.
During startup, to closely monitor changes in water level, water boiler accident or occurrence textile full of water accidents.
Second, the normal operation
1, the water level
Fuel gas-fired boiler water table should be the red line indicating the high, medium and low water level, the operation shall not exceed the maximum safe level or below the minimum safe level.
Rinse water table at least once per shift, when there is suspicion of running water, rinse should always check.
2, steam pressure
Red lines indicate the working pressure gauge should have, so sensitive and reliable, the trap should be flushed at least once a week.
3, safety valve
Safety valve should seal intact, no leakage; once a week manually (or automatically) emission test, and begin start pressure, opening pressure, reseating pressure and test time, participants, etc credited maintenance log book u, for future reference .
Proceed as boiler water quality requirements of water quality testing personnel under the guidance of class 1 or 2 times sewage, sewage incident not too long, generally no more than 10 minutes.
Sewage should (preferably when shutdown), should be closely monitored sewage water level changes, and pay attention to safety at the time of low load, low pressure, high water level.
Many boilers when sharing a sewage mains, while sewage is prohibited.
1, the normal shutdown
After normal boiler shutdown should generally be reduced boiler load operation, press the boiler shutdown procedure. Actuated pump water to high water level, pressure steam boiler to be dropped after 0.3MPa flushing water table and sewerage operations, and finally close the raft, cut off the power supply control cabinet, wipe equipment, clean up the environment and health, For water, the water temperature should be below after 70 ℃, before proceeding.
2, emergency shutdown
When the boiler operation in the following situations should immediately shutdown:
Furnace water level drops below the minimum water level gauge visible edges.
Increasing water supply and other measures, but digital still continue to fall.
Boiler water level exceeds the highest visible water table level (full of water), the water still can not see the water level.
All water supply system water pump failure or malfunction, not water to the boiler.
Water gauge or safety valve all the failures.
Endanger the boiler element is damaged and the safety of operating personnel.
Combustion equipment damage, or furnace wall collapse and other red-hot boiler structure is a serious threat to the safe operation of the boiler.
Other anomalies endanger the safe operation of the boiler.
Before maintenance work should be well prepared, as before entering the drum interior work, must be of sufficient strength to connect all of the metal blocking plate spaced reliable steam, water, sewage and other operation of the boiler pipes, and the drum manholes and hand holes (boiler shell) is opened, so that air convection period.
After the completion of preparations to repair. Should ensure that the quarterly frequency of boiler maintenance and repair of the year.
Advances in technology to the boiler industry into new and innovative ideas, now the boiler manufacturers boiler are easy targets toward the operation forward, but in the use of the boiler, improper operation or other quality problems still exist, these failures will It is causing the direct cause of the explosion boilers. Therefore, when using the boiler must be in strict accordance with safety practices boiler, security incidents strangled in the cradle.
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