Fully Automatic Industrial 1t gas steam boiler Bhutan

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.

It is reported that since December 2018, with the market in Hefei, Anhui Province Lujiang County prison within the jurisdiction of the range 15 "coal to gas" boiler unit in the course of a full range of checking the newly installed gas boiler, while ensuring the area range within the boiler unit making a smooth transition "from coal to gas," the process, but also to ensure the safe use of the newly installed boiler.

The boiler before proceeding with the installation, install the unit you want to inform the local boiler installation of special equipment safety supervision and management department, inspection units installed during the installation and installation personnel qualification documents related strictly require the installation of the unit perform the required safety specifications and related standards, strict Charles undocumented and undocumented installers to install the unit.

When commissioning the boiler, the gas company and do the docking unit installation and use of the tripartite unit personnel to ensure the safety of boiler commissioning and trial operation of the boiler installation inspection, and actively promote the boiler unit boiler handle registration certificate and make contingency plans .

The inlet speed of gas-fired hot-water boiler before start-up should not be too fast, usually no less than 4 hours in winter, and 2-3 hours in other seasons, especially in the initial stage of water intake. The inlet temperature of a gas-fired hot water boiler is generally 50 °C, so the difference between the feed water temperature and the steam wall temperature in the drum is less than 40 °C. For gas-fired hot water boiler, the inlet water temperature can be equal to that of steam drum wall without complete cooling, otherwise the inlet water speed should be slowed down. When feed water enters the drum, it always first touches the lower part of the drum. If the difference between the feed water temperature and the drum wall temperature is too Large, the inlet speed is fast, and the upper and lower walls of the drum, the inner and outer walls will have a large expansion. Bad, on the drum caused a lot of additional stress, resulting in drum deformation, serious cracking. Due to the thickness and slow expansion of the drum wall, the tube wall connected to the drum wall is thinner and expands faster. If the inlet temperature of the gas-fired hot water boiler is too high or the inlet speed is too fast, the expansion will be uneven, the welded joint will appear cracks and the gas-fired hot water boiler will be damaged. The inner diameter of the decompression tube is usually φ 7~13mm (water and steam), and its length should not be too long (< 60m). Straightness of pressure pipe If the diameter is too small and the length is too long, it will affect the dynamic transmission of pressure measurement and increase the dynamic error. The inner diameter is too large to be easily maintained and installed. Pressure pipes should not be placed in the horizontal part to prevent the accumulation of bubbles (when measuring liquids) and water columns (when measuring gases). The pressure tap shall be perpendicular to the flow of the medium. Pressure faucet must not have chamfer, flange and burr. When measuring the hydraulic pressure of an electrically heated fully automatic industrial 1t steam boiler bhutan, the pressure outlet should be removed from the lower part of the pipe to prevent the gas in the liquid from entering the pressure guide pipe; When measuring the gas pressure, remove the pressure splice from the upper part of the pipe to prevent dust and dust in the gas The droplets enter the ignition line. The installation site of the electric heating steam boiler pressure gauge (pressure transmitter) should meet the environmental conditions (temperature, humidity, vibration, etc.) used by the instrument, and should be easy to observe, repair and ensure safety. Insulation should be laid on pressure pipes in high temperature media to avoid burning during flushing. Pressure lines are equipped with needle valves (for cutting off pressure in the event of pressure line failures during operation), auxiliary needle valves (for use with instruments, stopping, replacement), condensing coils and elbows (isolation elastic elements from high-temperature media), Easy to install sealing gaskets) as well as sewage valves and sewers. For special pressure measurements, it's still pressing. Install discharge valve, isolation room and so on in the force pipe.

Water tube boiler in Malaysia

After statistics, we found that water tube boilers are a very popular type of furnace in Malaysia, especially biomass boilers. The water tube boiler is a boiler in which water, steam or steam-water mixture flows in the pipe while flame or smoke burns and flows outside the pipe. If the fuel is coal or biomass, the water tube boiler type is SZL double drum type or DHL corner tube type, if the fuel is gas or diesel, the SZS double drum is main type.