Wet back Natural Circulation 2 Ton Diesel Steam Boiler Cost
Gas - fired central heating boilers internal corrosion Wet how to care for internal corrosion. Although the gas central heating boiler heating surface deactivated during the boiler's internal and external corrosion at the same time, but the interior is more serious than external corrosion, so the emphasis on oral anti-corrosion were discussed. Gas central heating boiler internal corrosion maintenance wet method This method is not to pan the gas central heating boiler water off when the shutdown, but the gas central heating boiler filled with water to prevent air from entering the pot, filled with water and heating Add other oxygen scavenger, inhibitor or deactivator agents in the boiler, the metal surface to form a carbon protective film to prevent heating surface is not oxidized, so as to achieve a preservative. 1, the internal gas central heating boilers alkali corrosion wet method filled gas concentration within a concentration of lye heating boiler, and keeping the pH at 10 or more. Specific practices are as follows: to remove scale and sediment, to ensure the valves close, operation of the system connected to the piping installation blind plate. The highest position of the gas central heating boiler can be installed - a small box lye to ensure complementary loss when lye lye. The alkali agent used is sodium carbonate, sodium hydroxide, trisodium phosphate, or a mixture. Preparation of soft water should be used, not use raw water. Agent in an amount of: water was added sodium carbonate per tonne pot 20kg; NaOH per tonne pot of water was added 5-6kg; Na3PO4 pot by adding water per ton of 10-12kg. Through a dedicated pump lye into the pot, until the water coming out from the air valve, and to ensure that the pot pressure greater than atmospheric pressure. Initial protection should be strengthened Tightness checks should be monitored once a month after the normal concentration of NaOH. When the alkali concentration is less than 5% of implant concentration, should fill base. 2, the internal gas central heating boiler corrosion wet method This method is hydrazine hydrazine H2N2 full concentration and ammonia NH3 in the gas mixture within the heating boiler. Corrosion is the use of hydrazine, with a strong further removal of the water of oxygen, i.e. N2H4O2 → N22H2O, the cathode polarization. While alkaline with ammonia in an aqueous solution, increase the pH of the metal surface passivation, resulting in anodic polarization, in order to achieve a preservative. Due to toxic hydrazine, use is restricted. 3, the internal gas central heating boilers resist corrosion inhibition method of wet organic organic corrosion inhibitor is water treatment agent multi-functional anti-corrosion, scaling, cleaning and the like. The main components of polyphosphates, organic phosphates, and inorganic bases BTA copper corrosion inhibitor composition. Red brown liquid medicament agent, pH≥13, corrosion mechanism is: water-soluble drug can be hydrolyzed after the polyphosphate anions and positively charged cations with negatively charged polyphosphate anions root metal corrosion in the battery loses electrons and the anode region the Fe2 combined to produce highly insoluble ferric polyphosphate water, and is formed to cover the metal surface of the anode in the anodic polarization regions, hydrolyzed cationic agent captured electrons in the cathode region of the metal, the metal becomes strong affinity and the atoms adsorbed on the metal surface of the cathode region; forming a cathodic polarization. Since these factors are of metal corrosion choke, it plays a role in corrosion. Organic corrosion inhibitors pH≥13, 4-5 tons of water treatment agent according to 1L, the aqueous solution can ensure pH≥10, can effectively prevent acid corrosion caused by CO2 gas, also played a role in corrosion. As organic corrosion inhibitors disable maintenance agent, an agent for the organic phosphorus component also certain ingredients scale and soda boiler system, dissolved iron from dissolution of the scale becomes hard porous loose structure thereof. While enabling the agent to penetrate the protective membrane in scale formation, and destruction of the binding of the metal surface of the scale, so that the scale off.
What should we pay attention to when using Atmospheric pressure Hot Water Boiler
Since 1970s, atmospheric hot water boilers have been widely used in China, especially in northern China. It is popular not only because of its low cost, easy manufacturing, but also because it has the characteristics of simple management, safe operation and so on. Precisely because atmospheric pressure hot water boilers have been widely used in various industries, it is particularly important to pay attention to its use, especially for new adopters, the following points should be paid more attention to:
1. The pipe diameter of atmospheric hot water boiler is the same as that of atmosphere. Under any working condition, the water mark of boiler is in the boiler with zero surface pressure. So before you use it, the user The new boiler should be inspected, especially if the diameter of the pipe meets the requirements. In addition, any valves should be strictly prohibited on the connecting pipe to ensure that the pipe is unobstructed. In general, the specialized atmospheric hot water boiler will also spray on the furnace body obvious position "the normal pressure boiler shall not be used under pressure and the outlet hot water temperature shall not exceed 90 ℃".
2. professional installation, commissioning when the first purchase of hot water boiler manufacturers will recommend that the installation and commissioning of the boiler is responsible for the professional personnel. Once put into use, non-professionals are not allowed to change the boiler structure, install system lines, valves at will. At the same time, attention should also be paid to the conversion of atmospheric hot water boilers into pressure boilers.
3. to ensure the boiler safety accessories sensitive and reliable long-term use of atmospheric hot water boilers know that regular fixed-point pressure gauges and thermometers should be professionally verified to ensure that the calibration is used within the validity period. In addition, in order to ensure the safety, sensitivity and reliability of the boiler, the operator should often flush the water level meter and check the temperature and water level control device. In the course of boiler operation, the operator should pay attention to the changes inside and outside the boiler in time to ensure the safety.
Select the boiler installation location should be taken to avoid these positions: poor ventilation performance location nearby, inflammable and explosive materials. Only install the ventilation performance and location away from flammable materials, in order to ensure boiler installation allows users to rest assured peace of mind. Second, the installation procedures completed ahead of schedule, and good communication and coordination and administration
Our environmental management efforts continue to increase, located in Wuhai City of Inner Mongolia is also actively respond to national policies, by removing, shutting down non-compliance of the measures within the jurisdiction of coal-fired boilers, etc., to improve air quality within the city.
Recently, a reporter to follow the staff Haibo Bay Area environmental monitoring brigade, examined the case of shutting down coal-fired boilers in rural areas. Trinidad town in Wuhai unity Village, coal-fired boiler is the main source of heat in the village residents, schools, hospitals in the town and airport, but because they do not meet environmental requirements, the boiler has been officially shut down at the end of 2018. Haibo Bay Area Environmental Protection Agency environmental monitoring battalion to us to: "Removing the boiler is 20 tons of steam coal-fired boilers, each heating season about to burn more than 3,000 tons of coal in accordance with the municipal government requirements. within the deadline 20 tons of steam boilers to be all removed, replaced with clean energy. since November 2018, this block of sea area has access to a central heating all children. "
So far in 2013, Wuhai City in strict accordance with regulatory requirements grid, earnestly implement the responsibility of inspectors on-site supervision, and has eliminated 20 tons of steam coal-fired boilers for heating and tea bath furnace 791 units, of which 2018 out of 58 units. Meanwhile, municipal and district environmental protection departments at all levels to increase on-site law enforcement and ensure that the boiler is no longer out of the resurgence. Up to now, it has no built-up area of Wuhai City and 35 tons of steam coal-fired boilers to achieve a stable discharge standards.