In Harbin fifth session of the Fourth Session of the National People's Congress, coal-fired boilers governance as a key task to be mentioned again. Meeting specific targets: by 2019, Harbin will govern coal-fired boilers, boiler out of 35 tons and below do not have to upgrade conditions, starting 65 tons or more of coal-fired boilers and energy-saving ultra-low emissions transformation.
2019, Harbin will continue to strictly control the total amount and quality of coal, according to local conditions to solve the shanty towns, suburban town (township) village coal powder burning problem by briquetting, Burying to field, the way raw material cogeneration, effective path to explore the comprehensive utilization of straw, the straw open-air Jinshao continue to focus on the work to implement the required emission limits industrial emissions, car exhaust strengthen, kitchen fumes, dust and other site management, effectively improve air quality.
2018, Harbin City, air pollution, elimination of coal-fired boilers 1191 units, biomass boilers to replace more than 10,000 units, updated bi-fuel taxi 1270 units, 1323 units of new energy buses, comprehensive utilization of straw and prohibiting open-air work strength forward, ambient air quality fine days up to 312 days, an increase of 42 days over the previous year, the highest level since the ultra-high PM2.5 monitoring.
Pressure boiler furnace designed to fully consider the characteristics of the fuel pressure boilers body member are two main drum and furnace. Also known as the furnace combustion chamber, fuel combustion for space. The solid fuel on to the grate, referred to as a fire bed combustion furnace Stoker, also known as fire bed furnace; solid fuel furnace liquid, gas or pulverized, is injected into the combustion chamber is called the fire chamber burner, also known as the furnace fire chamber; air coal particles burn hold it was boiling, and the furnace is inferior fuel suitable for combustion is called fluidized bed furnace, also called fluidized bed furnace; coal particles so that an air flow rotated at high speed, and strongly called fire cylindrical cyclone furnace hearth. The overall structure of pressure boilers and boiler auxiliary equipment including two parts. Boiler furnace, drum, burner, water wall superheater, economizer, air preheater, and the furnace wall, etc. The main frame member constituting the core part of the steam production, called boiler. Furnace design needs to fully consider the characteristics of the fuel used. Each boiler should be fueled with the original design of the fuel. Boilers running economy and reliability are likely to vary greatly reduced when using the characteristics of fuel combustion. And the natural circulation drum is repeatedly forced circulation boiler receiving feedwater to the economizer, the coupling cycle and supplying saturated steam superheater cylindrical vessel. Simplified drum made from high quality steel plate, is one of the heaviest components of the boiler.
The WNS boiler produced by ZG boiler is a oil and gas boiler, which can be divided into WNS oil and gas hot water boilers and WNS oil and gas steam boilers, and is also a well-developed hot boiler by ZG boiler. The technical features of this boiler are as follows:
1. The WNS oil and gas boiler adopts a large-volume combustion chamber design, so that the fuel is fully burned and the flame fullness is good. Good for low-nitrogen combustion of fuels and low nitrogen emissions from flue gas.
2. The WNS oil and gas boiler uses an automatic low nitrogen burner + flue gas recirculation system (FGR) system to achieve ultra-low nitrogen emissions.
3. The WNS oil and gas boiler adopt advanced wave furnace structure, which not only increases the heat transfer area, but also satisfies the free expansion of the furnace after heating. At the same time, the waveform furnace structure enhances the disturbance of the flue gas and enhances heat transfer and combustion.
4. The rear of the boiler body is equipped with an energy saver and a condenser, which can effectively reduce the temperature of the exhaust gas and improve the overall thermal efficiency of the boiler. The condenser adopts "low temperature corrosion resistant" special steel to greatly increase the service life.
5. The oil and gas boiler adopts a wet-back structure and full-flanged butt welds with high reliability and low maintenance costs.
6. The use of threaded tobacco pipes in the WNS oil and gas boiler is beneficial to enhance airflow disturbance and enhance heat transfer.
7. The WNS oil and gas boiler outer packaging adopts color pattern board, mirror stainless steel or matt stainless steel board in three forms, beautiful and generous.
8. Automatic operation of the WNS oil and gas boiler, micro-positive pressure combustion, no need to draw fan, reduce boiler system investment, reduce boiler operating costs.
9. The WNS oil and gas boiler equipped with necessary thermal instruments, valves and various protection devices, to achieve continuous electric water regulation, automatic water level control and high and low water level alarm, low water level chain protection and other functions, automatic control of steam pressure and overpressure alarm and other functions.
Piezoelectric often pay attention to what is currently required boiler maintenance, boiler advanced piezoelectric often need to be applied in industrial production and daily life of boiler equipment. However, the electric boiler pressure part of mechatronics equipment running high. If the user in a timely manner to carry out boiler maintenance, oil equipment will lead the line, aging equipment, pump wear. Therefore, in the operation of the boiler, the user should pay attention to equipment maintenance. First, note that prior to detecting piezoelectric constant boiler shutdown maintenance or service, the user equipment in accordance with normal operation to achieve slow cooling shutdown procedure, while the user should use the boiler water circulation and ventilation furnace, boiler and the furnace temperature was gradually decreased. Second, note that partition is provided during maintenance, the combustion chamber and flue piezoelectric often tested to be separated from the main boiler flue or other operation of the boiler with the flue connected. And flue tightly closed, after isolation and ventilation. Further, using a blind partitioning plate device should have sufficient strength, stiffness, to avoid high pressure medium at atmospheric pressure electric boiler drum, indicating the position of the partition, to avoid confusion. Third, note that the detection device before the container inspection atmospheric pressure vessel, the user must be turned off connecting line between the container and the gas apparatus, especially in the passage of inflammable poisonous media device. Container equipment during maintenance equipment not only need to close the valve, you must also use the device Blind plate closed to prevent valve leakage, the leakage of flammable or toxic gas into the container, resulting in a fire, explosion or poisoning.
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