Hot water boiler feed water hardness and burner whether General: hot water boiler, because it is the product website, it is the object of our study and understanding. And, for the moment, in the familiarity has not reached the predetermined learning objectives and requirements, therefore, have to continue this work so that we can compliance as soon as possible, and at the same time, you can make yourself a lot of benefit. 1. The hot water boiler feed water hardness, what specific requirements? This hot water boiler A boiler, in which the hardness of the water supply, is less than a predetermined 0.6mmol / liter. However, to avoid this problem of boiler fouling, in turn, affect the efficiency of the boiler, which is a reference to a standard boiler feedwater to steam, to achieve the above object, because the steam boiler for soya processing unit feedwater hardness, requiring less than 0.03mmol / liter.
Hot water boiler, the boiler should be installed in the three-phase four-wire power supply system: a necessary condition for electric water boiler 1, the boiler should be installed in a three-phase four-wire power supply system, the mounting surface should be smooth and without any surrounding explosive article; ground wire must be installed and ensure reliable connection. 2, boiler and piping circuit should be installed, the quality of the installation must comply with the relevant provisions of national industries. 3, the operator must be specially trained in advance, basic knowledge and operating procedures of the boiler should be aware of. 4, the boiler operation, boiler feed water tank must be, and must be qualified through softened water. 5, the power supply should be used to install the boiler control switch, the capacity of the power supply must be rated for the voltage and the electrical power needed to run the boiler. 6, check that the boiler and the piping circuit installed correctly, all valves and switches without exception, and that the water circuit remains normal. Third, the furnace power line specification table 50007 100,015 million million million 200,030 1,200,000 400,060 million single set of heating tube power 15KW / 24KW group / group 24KW / 24KW group / group 24KW / 24KW group / groups 24KW / group 24KW / 24KW heater tube assembly group number / group 43.5581015203060 power load hot 61010101010101010 three-core cable mm? 355075951502X952X1853X1856X185
At 10:00 on September 6 and more, Harbin, a business is the purchase of a new 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).
2, start
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 .
4, sewage
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.
Third, shutdown
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.
3, maintenance
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.
In recent years, the tea industry has gradually promoted the use of steam heat for tea processing. In the processing of tea, the supply of heat sources(steam boiler for soya processing unit) such as withering, killing, and drying. The temperature plays an important role in the drying process of tea leaves. Generally speaking, tea leaves are usually slowly dried in a low temperature method below 70 ° C in a drying room, and the temperature is about 50 ° C. In this case, the tea leaves are hot. It can be baked in 30 hours, and the temperature is 48-50 hours to achieve moderate dryness. Because tea leaves are sensitive to temperature and time, small differences can also lead to a world of difference in tea quality.
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