3mw hot water gas steam boiler
Technical features of WNS 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.
Gas pressure hot water boiler pressure introduction gas hot water boiler: gas pressure hot water boiler pressure vessel belongs, as always pressure hot water boiler is full of water, so no water level, but to be fitted with pressure gauges, safety valves and thermometers. Circulating pump pressure hot water boiler heating system is generally used in water pump, which is pumping systems engineering backwater sent to the boiler, it is necessary to overcome the resistance of the systemic circulation, but also to maintain a certain pressure boilers, hot water does not guarantee high temperature vaporization . Pressure hot water boiler can not only supply low-temperature water, but also to supply hot water Features: 1, boiler design, manufacturing, supervision and inspection are strictly according to "hot water boiler Safety Supervision" ensure long-term security and stability of the boilers. 2, the boiler body is a shell type three return all wet back downstream pyrotechnic pipe structure, large combustion flame in combustion chamber a slight positive pressure, combustion heat load is low, less NOx emissions of harmful substances. Through advanced machine test bed to test several times to verify the boiler under various load operation can get good thermal performance, qualified flue gas emissions targets as well as a wide range of burner adapter. 3, before and after the boiler smoke box with a special heat insulation materials, high temperature, low thermal conductivity, good anti-radical quenching heat capacity, greatly extending the life of the smoke box. A lower smoke box is provided with a condensate drain, water condensed reduce corrosion of the pressure receiving member. 4, the boiler and each pot spout means disposed reasonable to optimize the pot water circulation, prevent scale generation, but also help to improve the water side heat transfer. Set hand hole, inspection hole in the poor circulation of weak links, to facilitate regular inspection and maintenance. 5, the temperature of the boiler smoke box structure compared to dry wet back boiler back, greatly reduced, the smoke box solves the frequent need to maintain the operation of the phenomenon; 6, a large volume of water boiler design, the load fluctuation of furnace not sensitive to large changes in the load range of users still apply. 7, industrial boilers professional artists and designers carefully designed appearance, novel and unique and yet with the surrounding environment coordination. Sino-Swiss boiler completely changed the image of heavy industrial boilers, industrial boilers is a new concept of low-carbon twenty-first century. Construction and installation points: 1 explosion-proof door is provided on the fuel, the rear of the gas-fired boiler or pipe smoke, explosion door location should be conducive to explosion venting. For gas explosion likely to endanger the safety of the operator occasions, should be installed on the guide tube pressure relief blast doors. 2. Installation of boiler and its auxiliary equipment, water treatment equipment should meet the technical requirements of the device manufacturer. Equipment foundation must be the arrival of equipment and after verification and design drawings before construction. 3. When mounting the device, the device should be avoided, to install the floor material are collected together. Column using a construction, the beam lifting device, must first verify that the carrying capacity of the beam, the column. 4. After the pressure test acceptance oil, gas, water, steam pipe installation, according to "Industrial metallic pipeline construction and acceptance" in GB50235-1997. The main construction practices and node configuration detail see National Building Standard Design Atlas. 02R110 "Gas (oil) boiler room engineering design and construction Atlas" 02R111 "small vertical, horizontal tank Atlas" 02R112 "Tank dome Atlas"
2. Oxygen corrosion
For the biomass fuel boiler pressure parts,the water side is mainly electro chemical corrosion,the fire side (or flue gas side) is mainly chemical corrosion.The oxygen corrosion belongs to electrochemical corrosion, it is mainly caused by the dissolved oxygen in water.At room temperature,the dissolved oxygen concentration is about 9.1mg / L,according to the GB1576-2001 “industrial boiler water quality” requirement ,the rated steam pressure should not be more than 1.0MPa,the dissolved oxygen concentration should not be more than 0.1mg / L,otherwise,it is likely to lead to metal corrosion.
In mid-June, Yingtan City, Jiangxi Province issued a "Yingtan City People's Government Office on the issuance of three-year action plan to win Yingtan City Blue Sky Battle (2018-2020 years)", Yingtan City Market Supervisory Authority proposed by file stringent targets execution, to carry out a three-year coal-fired boiler special work within the city.
The special rectification, on the basis of thorough investigations within the jurisdiction of coal-fired boilers, the high standard, high-efficiency coal-fired boilers to complete the rectification work to ensure that by the end of 2018 as required successfully completed. 10 out of 21 local stations steam tons / hour and coal-fired boilers and started to build the city and out of the city of 35 tons of steam coal-fired boilers of work; involving the transformation of coal-fired boilers, technical testing organizations should strictly follow the relevant safety technical specifications strict technical clearance, and the overdue completion of the rectification of the enterprise be severely punished according to relevant laws and regulations. Coal-fired boilers by special campaigns, effectively reduce pollutant emissions, improve air quality, help Yingtan beautiful building.
Up to now, the council investigation of coal-fired boiler unit 16, a total of 21 Mopai boiler units, 12 units have been removed, and the rest are in the boiler rectification. Next, the council will further strengthen the regulation of coal-fired boiler follow-up supervision, to ensure that regulation effect.