First, we need to clear in the boiler "coal to gas" process, to determine the different rehabilitation programs depending on the furnace. Second, grasp the "coal to gas," the key link. 1, removal of the original coal-fired boiler slag machine, coal hopper, coal equipment, chain grate, gearbox and so on. 2, by calculating the heat transfer in the furnace, the furnace geometry is determined, the center position of the furnace flame. Re-casting furnace, furnace refractory concrete casting material used, a large ratio of aggregate: Aggregate: Small aggregate: Sand: = 4:2:1:1:2 refractory cement. After the boiler pipe arch to avoid the flame center position, after the original arch pipe elevation on the basis of the original slope. 3, installation of explosion-proof doors. For gas-fired boiler, the blast doors is an important facility to protect the safe operation of the boiler. 4, boiler water test of 1.25 times the working pressure. Third, no matter what kind of furnace should be noted that in the transformation of the construction of the following questions: 1, should guarantee the smooth flow of flue gas, have a good fullness and should avoid dead ends and dead. 2, the burner should be provided at the height position of the center of the furnace, and the combustion space and has sufficient length. Flame should not be flushed to the wall heating surface, so as to avoid incomplete combustion gases local overheating and damage to the wall. 3, since the combustion gas in the furnace backlash, high thermal strength, exposed to the bottom of the drum in the furnace should be adiabatic process. 4, various pipes, fire tube boiler furnace wall substantially refractory brick masonry, and shield plus insulation material. In the "coal to gas" should pay attention to the tightness of the furnace wall, minimizing the original door, door checks, etc., can assemble the refractory block, prevent cold air flames wounding or excessive leakage into the furnace , affecting boiler efficiency, to see the fire hole must remain closed also should see the fire hole, heat-resistant glass viewing by fire. 5, the furnace boiler and gas than coal-fired boilers, is generally greater, there is sufficient combustion space, increase the volume of gas, does not affect the transformation of combustion conditions. If the user requests output significantly improved boiler, the furnace can be increased radiation heating surface, to remove scale and soot while the inner surface of the outer heating of the original, so that without increasing the volume of the boiler case to improve the boiler output is not a problem. Thermodynamic calculations must do in the boiler, while the smoke but also good wind resistance calculation intensity calculation. Fourth, the correct choice of matching burner
The pollution-free environmental benefit of china made coal fired hot water boiler is obvious: renewable biomass energy is used as fuel to realize the sustainable utilization of energy. Adopting high temperature subsection combustion technology and low emission of NOX,SO2, dust in flue gas, it is the best substitute for fuel (gas) burner, electric heating and so on. Internal inspection and preparation of hot water boiler, inspection of furnace and flue, inspection of boiler accessories, inspection of automatic control system, inspection of ancillary equipment, inspection of combustion equipment, inspection of auxiliary heating surface, The hot water boiler must do some inspection before running, these checks are not to be underestimated, possibly because of our neglect Cause very serious consequences. Therefore, we must guard against micro, hot water boiler operation before careful inspection of the following items. Including boiler internal inspection and use preparation. The furnace and flue inspection, furnace and flue dust and debris should be cleared. Air duct and flue adjustment doors, gates shall be complete and tight, flexible switches, accurate opening and closing instructions. Boiler accessories inspection, check the safety accessories are intact; cock rotation flexible, easy to use; all kinds of instruments and control devices should be complete, good, clean. After the check has passed, the pressure gauge plug should be kept in working condition. Automatic control system inspection. Inspection of ancillary equipment. The combustion equipment is checked to check if the combustion device is in good condition; the mechanical transmission system, the coal conveying system and the ballast system are tested normally; the pressure degree of the safety spring of the speed regulating box should be appropriate and the lubrication is good; the gauge of the coal brake is correct. Eagle iron neat, intact, ballast board integrity, flexible movement. Check auxiliary heating surface to check whether auxiliary equipment (induced fan, blower, pump, etc.) coupling is firmly connected; triangular belt is properly tightened; lubricating oil should be good and adequate; cooling water is unobstructed. After inspection, install safety shield, test operation separately, and pay attention to the current of idling. Internal inspection and preparation of hot water boiler The inspection of furnace and flue, the inspection of boiler accessories, the inspection of automatic control system, the inspection of ancillary equipment, the inspection of combustion equipment, the inspection of auxiliary heating surface, and the inspection of hot water boilers must be made before running. These examinations are not negligible and may have very serious consequences as a result of our neglect.
Hot water boiler is one of the important equipment for the district to provide our real estate company, and two gas hot water provide the fast boiler boiler flotilla of environmental performance, in full compliance with state regulations after smoke was detected in the rear of the boiler. And boiler operation is safe, stable, we use the very at ease. --customer feedback
6 tph WNS series condensing gas-fired steam boiler project for printing and dyeing industrySteam boilers provide heat source for dyeing, drying, slashing and printing in printing and dyeing industry. Nantong New Dunhuang Dyeing Co. LTD. has always been providing excellent products and after-sales service to customers for the 16 years' constant development, main business including: yarn bleaching and sales, sales of carpet and garment fabrics and decoration cloth. As the state is promoting the substitution of small gas-fired boilers, Nantong New Dunhuan decided to introduce one set of gas-fired steam boiler with sufficient output and high efficiency. A set of high-quality boiler is essential for a dyeing and printing enterprise, which can not only enhance productivity but also reduce operating costs. After some market research, Nantong New Dunhuang chose ZOZEN as their cost-effective boiler supplier. In the process of technical communication, New Dunhuang spoke highly of ZOZEN professional degree and ordered one set of 6 tph WNS series gas-fired steam boiler (WNS6-1.25-Q). This series of boilers is ZOZEN's own R&D and has good reputation in the market with excellent product performance. It has wide fuel adaptability, applicable to a wide range of fuels including natural gas, methane, coal gas, diesel, heavy oil, light oil, etc., It adopts a large-diameter corrugated furnace to ensure the completed combustion, along with a low NOx burner, the NOx emission can be controlled below 30mg/Nm3. The boiler features automatic and safe operation, can automatically adjust and protect the combustion condition, water level, temperature and steam pressure in the course of operating. ZOZEN also installed the condenser, economizer for the tail flue, which would recycle the flue gas and decrease the exhaust temperature below to 60 degrees. The thermal efficiency is as high as 98%, which is higher than the same products in the market.