ASME Water Tube and Fire Tube Steam Boilers

Water tube and fire tube boilers are essentially the opposite in design. In a water tube boiler, water travels through tubes which are surrounded by the by-products of combustion, or flue gas. In a fire tube boiler, the flue gas travels through the tubes, which are surrounded by hot water. Water tube and fire tube steam boilers in ZG boiler have identified ASME certification. ASME water tube steam boilers mainly have SZS series oil & gas fired steam boiler and SZL series chain grate steam boiler. ASME fire tube steam boilers mainly have WNS series oil & gas fired steam boiler, DZL series chain grate steam boiler.

Whether gas quality steam boiler steam boiler factory is a substitute for coal-fired boilers and a secondary air for gas steam boiler, which is a boiler, for all of us, it is also a knowledge and understanding, have a comprehensive understanding and understanding, in order to ensure learning products, at the same time, you can get yourself some new knowledge from it, rather than nothing at all, which in turn affects the learning process of the product. Function gas boiler the ignition system that ignites the mixture of air and fuel, its main components are: the ignition transformer, the ignition electrode, a high voltage electrical cable fire. A more secure electronic ignition system called ignition pulse, is widely used Zhuoyi energy saving gas boiler manufacturers. Which facilitate saving, can simply press a finger, and safe, does not occur due to unexpected accidents occur flame, once the stall state occurs, the control system can close the solenoid valve, off the gas passage. Steam boiler is an energy conversion device, the energy input to the boiler fuel chemical energy, electrical energy, thermal energy and other forms of high temperature flue gas, and after converting the boiler, the steam output having a certain outside thermal energy, high-temperature hot water or an organic carrier. Hot water boiler boiler assembly PC-style controller, all functions are stored on a smart chip, intelligent boiler, digitization, automation, humane, intelligent control of boiler water temperature, water temperature reached the heating automatically stop; large screen fonts display temperature, boiler water temperature at a glance. 1. What are the requirements for gas steam boiler manufacturers do? Gas-fired steam boiler this boiler, its production and manufacture of ordinary boilers companies, is not difficult. Therefore, as long as there is a boiler manufacturing qualification of Class C manufacturer or business, we can manufacture gas steam boiler. So, on this issue, the answer is yes. 2. Gas-fired steam boiler, which is a substitute for coal-fired boilers do? In addition, once the role and secondary air in the boiler what? An alternative gas steam boiler is a boiler fired boilers, and therefore may be used in place of coal-fired boilers, gas steam boiler may also be used. For this boiler, combustion plays a role of primary air, the wind plays a role in dragging fuel, secondary air plays a role in combustion. 3. Is there a demand for biomass fuel gas steam boiler? Gas steam boiler, which biomass fuel, generally do not need, just under the feed system to select the appropriate particle size, it can be. Therefore, on this issue, the answer is yes, but not too many requirements, only some basic requirements. For gas steam boiler it can be said that the above-mentioned problem is very basic and important. So, I hope people will take seriously and implement, at the same time to grasp, in order to achieve good learning results, then you can expand your knowledge in this area, greatly benefited.

Several problems into a coal-fired boiler fuel gas boiler fired boilers changed several issues should be noted that the fuel gas boiler: fuel oil (l) high temperature corrosion of the fuel used in the boiler, containing an organic salt of a metal element as sodium, vanadium class, after combustion of the low melting point eutectic oxide crystals, generally of about 600 ℃, or even lower. These oxides sublimation at a high temperature furnace, then condensed in a lower relative temperature of the heated surface to form a high temperature corrosive fouling. Is characterized by high temperature corrosion: the metal began to appear at temperatures in excess of 580-620 deg.] C, the higher the temperature, the faster the etching. High temperature corrosion measures to prevent: l) the use of additives. Mainly magnesium, calcium oxide, hydroxide or dolomite (CaC03, MgCO3) and the like, these additives can generate a high melting point compound with the component acting in a high temperature fouling, the fouling becomes loose and shape, so as to avoid or mitigate high temperature corrosion. 2) use high temperature materials with good corrosion resistance, high temperature corrosion resistant chromium steel is better than the nickel-chromium steel. 3) coated with a protective film. Susceptible to corrosion in high temperature heating surface ceramic surface coating, a silicon carbide or silicon nitride special coatings, the heated surface may be aluminized other treatment to improve its high temperature resistance. 3) coated with a protective film. Susceptible to corrosion in high temperature heating surface and other surface-coated ceramics, silicon carbide, silicon nitride, or special coatings, the heated surface may be aluminized other treatment to improve its high temperature performance rot cloud. (2) low temperature corrosion in fuel sulfur generated during the combustion S02, since the fouling atomic oxygen present in the furnace and the convection heating surface and catalytic oxide film, SO2 is further oxidized to S03. S03 and H2S04 vapor in flue gas generated in conjunction with, the dew point of the flue gas containing the sulfuric acid vapor is greatly increased, when heated wall temperature below the dew point of sulfuric acid vapor will condense on the walls, and corrosion of the metal wall. Usually low temperature corrosion It occurs at the end of the air preheater of the boiler. Thus when burning high sulfur fuel, care must be taken to prevent low temperature corrosion. Prevent low temperature corrosion measures are: 1) low oxygen combustion. When the excess air at the outlet of the furnace lag coefficient down to 1.10 or less, for sulfur of the fuel oil used, the dew point of the flue gas will be significantly decreased, so as to avoid or mitigate low temperature corrosion. 2) use of additives. Sprayed into the furnace or flue additive in the curb generation of SO3 and to reduce the flue gas dew point temperature. Common additives solid (dolomite, limestone, magnesium oxide, and some special compound), the liquid (aqueous magnesium chloride solution, some oil soluble magnesium, calcium, zinc naphthenate compound) and a gas (ammonia gas, ammonia, three different ring) three categories. 3) raising the thermal wall temperature, so that it is higher than the dew point temperature of flue gas. Commonly used methods are: hot air recirculation inlet temperature of the air preheater increase; the installation of the heater core, air is heated by steam, a low temperature air preheater horizontal structure, the level of a horizontal pipe line is arranged an air preheater , the air flow in the pipe, the pipe between the smoke flow, erosion due to the lateral wall of the flue gas, the flue gas side heat transfer coefficient is increased to increase the wall temperature, more generally vertical wall temperature of the air preheater increase 20 ~ 25 ℃. 4) corrosion-resistant materials or corrosion resistant coating materials include glass, ceramics and the like; an anti-corrosion coating and had tried to enamel-coated surfaces like special steel anticorrosion paint. 5) timely sootblowing operation, and therefore should be a reasonable arrangement sootblowers. Fire and explosion of fuel failure (3) heating surface of the tail or incomplete combustion of atomized droplets gather in the tail of the heating surface, when it reaches ignition or explosion conditions, i.e., ignition and explosion may occur. The tail heating surface fouling aggravated by the possibility of aggregation of the oil droplets. Therefore, when coal-fired boilers into oil-fired boiler, burner should be correct and rational selection and delivery, and strictly develop from the induced draft fan. Rules and procedures for shutdown and normal operation to ensure good fuel atomization, with the wind reasonable. At each of the heating surface is arranged to be reasonable sootblowers. (4) determining the dew point temperature of flue gas is determined dew-point temperature of the flue gas has practical significance for the design and operation of flue gas dew point temperature factors influence mainly sulfur fuel ink, excess air coefficient, water vapor in the flue the amount of sulfur / cement ratio and combustion.

Fast party independent R & D and manufacturing SZS Hose quality steam boiler steam boiler factory having a low nitrogen, energy efficient, safe, easy to use, etc., using the waste heat of flue gas cascade, reasonably designed to maximize use of waste heat in the flue gas ; and the use of more than 95% of intelligent manufacturing equipment to ensure safe and reliable product quality; a number of warning device comes with boiler scale detection, smoke detection temperature, pressure sensing, all-round protection of the safe operation of the boiler.