gas fired steam boiler for industrial

gas fired steam boiler for industrial

As one of Beijing's air pollution emission standards of the most demanding urban, environmental control is very strict. Beijing primary school campus Emerald City as one of the cradles of socialist culture successor, in terms of the quality of students' learning environment is put emphasis on one hundred percent. October 2017, Beijing primary school campus Emerald City with my company, signed a two Thalia T6 series vacuum hot water boiler for winter heating use.

Fuel gas boiler automatic instrument sets the control means are included which according to the "industrial boilers Complete supply" and provides fuel gas boiler automated instrument packages supply shall include at least the following: (1) evaporation of 4t / h and 4t / h or less boiler 1 ) detection. Water gauge, vapor pressure gauges (including saturated and superheated), water pressure gauge, water thermometer, thermometer smoke, steam flow rate calculation (including less than evaporation lt / h boiler). Oil temperature, oil pressure, oil level indication, calculates fuel (gas boiler as temperature, pressure, gas), furnace exit gas temperature indication. Evaporation of 4t / h boiler flue gas oxygen content should have, furnace pressure, temperature economizer export indication. 2) regulation. Position of formula (only for non-economizer of the boiler) or continuous feedwater automatic control, automatic adjustment of a combustion boiler the combustion of heavy oil should automatically adjust the oil temperature, air pressure gas boiler there should be automatically adjusted. 3) alarm and protection. High and low water level indication and alarm, low water level limit protection, over-pressure steam indication, alarm and protection, flame protection furnace, fuel gas overpressure protection or low temperature alarm and protection. 4) Other. Auxiliary electrical control box, gas boilers should be equipped with explosion-proof electrical control equipment. (2) evaporation of 6t / h and above 6t / h boiler 1) detected. Water gauge, vapor pressure gauges (including superheated saturated), water pressure gauge, water thermometer, thermometer, smoke, water, steam pressure, water pressure indicator, calculated water flow, steam flow indication, recording and computing, oil temperature, oil pressure, oil level indication, indication and calculating the amount of oil (gas boiler as temperature, pressure, gas), economizer inlet and outlet water temperature indication, furnace exit gas temperature, exhaust gas temperature, air pressure, furnace pressure indication, Sheng Mei an inlet, an outlet indicated negative, indicating flue gas oxygen content, there is an outlet air temperature should be indicative of the boiler air preheater, the boiler superheater, there should be recorded and the superheated steam temperature indication. 2) regulation. Continuous automatic adjustment of water supply, drum, induced draft fan damper flap opening remote control, remote pump control valve (an intake gas boiler control valve), a heavy oil combustion boiler should automatically adjust the oil, gas boiler should automatically adjust the air pressure, there is superheater boiler there should automatically adjust the temperature of superheated steam. 3) alarm and protection. High and low water level indication and alarm, low water level limit protection, over voltage protection and alarm indication of heart steam, oil accident alarm system, furnace flame protection, fuel gas overpressure protection or low temperature alarm and protection. Boiler superheater should have more limited temperature of superheated steam and an alarm indication. 4) control and the other. Drums, Fan, and start and stop the pump interlock control program, drum, fan baffle opening damper indicated, shall be provided with explosion-gas boiler electrical control equipment.

In the national standard of water quality standard, the water quality index of hot water boiler stipulates that the total hardness of water supply for chemical treatment outside furnace is less than 0.6 mmol / L. In recent years, in order to reduce the operating cost of heating units, some hot water gas-fired fired steam boiler for industrials have been overloaded due to the use of class Ⅲ bituminous coal as fuel instead of class Ⅱ bituminous coal designed to replace the designed type Ⅱ bituminous coal. During the maintenance in summer, it is found that the overloading boiler water wall tube fouling problem is more prominent, some boilers even occur tube burst accident. Why is heating hot water boiler overloaded, scale and even burst tube? Because the calorific value of class Ⅲ bituminous coal is higher, the type Ⅲ bituminous coal of the same weight is burned instead of the designed class Ⅱ bituminous coal. Bituminous coal increases the circulation of boiler riser is not absolute equilibrium, the geometric difference of riser and the heat load are different, so there is inevitably the deviation of flow rate between the risers. Due to the overloading operation of the boiler, some riser tubes are easy to overheat boiling because the flow rate is small, and the wall temperature is higher than the designed wall temperature, so that the scale and even the tube burst are easy to occur. How to prevent the boiler from scaling when overloaded? The heating hot water boiler operates under overload because of the scaling after the superheated boiling. Steam is produced in the process of superheated boiling. The water quality requirement of gas steam boiler is less than 0.03 mmol / L, which is much lower than that of hot water boiler. Water quality requirements. Based on the above reasons, the feed water hardness of heating hot water boiler is reduced, and the scaling phenomenon is eliminated by reducing 0.6mmol/L to 0.03mmol/L.

First, when the flue temperature dropped to below 50 ℃ Solution: Check the tail may enter the flue if heated, while the flue thoroughly remove soot. No burning flue tail, can be re-started ignition; if burning, should be replaced, repaired burning member. Second, the combustion chamber when the negative pressure is too large Solution: When the exhaust gas temperature close to the temperature of the injected steam, or less than 150 deg.] C over 1 hour and stable, open the inspection hole inspection; after inspection after confirming the fire source, before start the fan ventilation. Third, shutdown or fire, air gun valve ajar solutions: reinforcing and electric fired steam boiler for industrial feed water drainage, or open the valve economizer recirculation tube to protect the economizer is not burning. Fourth, Kai, during shutdown lower furnace temperature, a solution of unburned fuel in the furnace: extinguishing device immediately put into vapor, carbon dioxide or other devices off fire. Five burning improperly adjusted, with insufficient wind or with the wind unreasonable Solution: Close the flue duct and baffle around the door opening, start sending prohibited, induced draft fan. These are the methods of electric heating steam boiler fast boiler to provide you with the handling of soot in the chimney, if you use electric steam boilers, with more than five can control their own boiler equipment need to be cleared up the flue, and select the appropriate method .

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