GJ / h: GJ / h, it is heat exchanged per unit of time.
We learned from Zhenjiang Municipal Environmental Protection Bureau, to further promote the Battle of Blue Sky, enhance air quality, the city actively carry out biomass boiler investigation and remediation work has been completed seven bathrooms demolition of straw biomass boiler work in built-up urban area .
Biomass boiler pollution remediation has been a major focus of air pollution control, some of the city bathhouses, hotels, restaurants in the use of raw materials process boilers, illegally blended with coal, waste wood, waste and other substances, not advanced treatment of smoke, nitrogen oxides and other pollutants directly into the atmosphere, some impact on air quality.
According to relevant regulations, Zhenjiang city, the city built the region prohibited the use of straw biomass boilers, the current investigation and the bathroom were 10 straw biomass boiler, in which 7 have been removed, two shutdown ready transformation. At the same time, straw biomass boiler outside the urban area will be completed before the end of June classification renovation work, all dedicated boiler using biomass briquette students, prohibit blended with other fuels, coal, wood, etc., and must complete the construction of the bag efficient dust embodiments, emissions guarantee compliance.
Gas-fired boiler or electric boiler which is good?To compare the two kinds of boilers better, we need to understand the advantages and disadvantages of the boilers. The advantages of electric boiler are: 1, high thermal efficiency: can meet the requirements of winter heating in all regions; 2, electric boiler is beneficial to environmental protection: no leakage, low noise, no pollution; 3, convenient use: automatic control, no special guard; Intelligent thermostat automatic control, flexible and convenient use, indoor temperature can be set by their own needs, start and close the machine can be controlled by the computer. The disadvantages of electric boilers are: 1. The operation cost is high, is gas-fired boiler 2 times, is gas-fired boiler 4 times. 2. The boiler must be supplied with three-phase electricity at 380 volts. If there is a power loss or power outage, there is no alternative. Seriously affect the normal production and operation of enterprise units. The advantages of gas-fired boiler are as follows: (1) the thermal efficiency is as high as 90%: it can meet the requirements of hot water heating in all regions; 2. Gas-fired boilers are conducive to the national strategy of energy conservation and emission reduction, collect agricultural and forestry wastes such as straws that are directly burned and cause pollution, and produce gas granular fuels through processing, which can bring benefits to farmers. Greatly reduce emissions of pollutants from exhaust gases. 3, convenient use: full automatic control, no special guard; flexible and convenient use, 4, gas fuel is similar to coal gasification combustion and suspension combustion state, flue gas stays in the high temperature furnace for a long time, through the use of the gas fuel is similar to the coal gasification combustion and suspension combustion state. Multiple air distribution, anaerobic, upper feed, lower fire, lower suction combustion, full combustion, high fuel utilization rate, no black smoke. 5, using the furnace dust removal device, with which the original concentration of boiler dust emission is low, can not use chimneys. 6, continuous fuel combustion, stable operating conditions, do not be affected by the addition of fuel or stabbing, can ensure output. 7, the fuel source is extensive, the cost is low. Not limited by the season, can be used throughout the year. The gas-fired boiler is half of the gas-fired boiler, 1/3 of the oil-fired boiler and 1/4 of the electric boiler. 9. Fangkuai gas-fired boiler In a modular design, each system uses one furnace body, two combustion heads or two furnace heads, one burner head 300000 truck in summer, and two burner heads 600000 truck when heating in autumn. When the coldest in winter, you can open four burning stoves 80-1.8 million truck, that is, the heating boiler only uses 300000 calories in summer, 600000 calories in autumn, 1.8 million calories in winter, one machine multi-use. In this way, customers do not need to invest in two sets of equipment systems, greatly reducing their first investment costs and operating costs. The disadvantages of gas-fired boilers are: 1. Need free space or The warehouse is used for storing gas particle fuel; 2. Blower induced fan and other accessories need 220 volts, affected by power outages, but diesel engine can be used to power boiler accessories. Keep the boiler running as usual! Summary: gas-fired boilers and electric boilers are environment-friendly boilers, automatic control, can adapt to various areas, the price of raw materials is stable; but the operating costs of electric boilers are too high to be affordable by ordinary enterprise units. Too much reliance on electricity, once there is a power outage, will seriously affect the normal production and operation of enterprises. Gas-fired boiler is different, in all clean energy boilers, its comprehensive operation The lowest cost. Although electric drive boiler accessories are needed in ordinary operation, the dependence on electricity is not great, and diesel generator can be used to operate power driven boiler fittings in the state of blackout. Because gas particles fuel ignition point, is not flammable, so even if the stack in the aisle side also does not matter. Overall: gas-fired boiler is better, can save a lot of operating costs for enterprises, economic, practical and environmental protection, and its small shortcomings easy to solve the impact of little.
Opening the water supply valve motor, regenerative electric closing valve, a pressure pump to start the cycle frequency control constant voltage supply, electric boiler starts after about 30 seconds, in such a manner direct supply water to the user. At the end of the water supply, stop circulating pressure pump, electric boiler stops after 60 seconds. When the water reaches the time period, the electric power boiler feed water valve is open, regenerative electric valve is closed, the electric boiler is not working, the circulation pump frequency control water supply pressure. Electric power supply period of boiler feed water valve has been closed, not to pay it to avoid the cold water supply to the user. If the heat storage tank and the temperature is below the set temperature in the regenerator period of 5 ° C, pressure circulation pump into operation again, electric boiler start working after 30 seconds.
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