combined gas fired water tube boilers coal fired

Horizontal steam combined fired water tube boilers coal fired accident treatment method: 1 overpressure accident boiler, boiler overpressure phenomenon of (1) a sharp rise in steam pressure, the pressure exceeds the allowable working pressure gauge pointer over the "red line" safety valve operating pressure is still elevated. (2) the operation of the device is the interlock overpressure protection, should send overpressure alarm signal, stops the air blowing, the wind, coal. (3) steam temperature and steam flow rate reduction increases. 2, to treat boiler overpressure (1) weakened rapidly burning, manually open the valve or bleed valve. (2) increase the water supply, while the lower reinforcing blowdown drum (It should be noted at this time to maintain the normal water level of the boiler), in order to reduce the temperature of the boiler water, thereby reducing the pressure in the boiler drum. (3) as a safety valve malfunction or all of the pressure gauge damage, emergency shutdown, safety valves and pressure gauges are to be repaired after the boost operation. When endanger the safe operation of (4) Boiler excessive pressure, blood pressure should take measures, but too fast buck is strictly prohibited. (5) boiler overpressure eliminate serious, to the shutdown of the boiler internal and external inspection, to eliminate the overpressure caused by deformation, leakage and other safety accessories and maintenance unqualified. 1, the phenomenon of the boiler water (1) below the minimum safe water level line, or no visible water, the water table glass (plate) as a white. (2) as a full-color water level gauge vapor instruction color. Low water level alarm signal (3) water level alarm occurs. (4) low water interlocking means, the water level should be below a prescribed value blower, Fan, grate reduction motor stops running. (5) a sharp rise in the superheater steam temperature, higher than the outlet steam temperature. (6) boiler exhaust gas temperature rises. (7) the water flow is less than the steam flow, causing Should the water tube due to tube cracking or economizer, an opposite phenomenon occurs. (8) When a serious water shortage, can smell the burnt smell. (9) When a serious shortage, the door can be seen from the red-hot waterwall tubes. (10) a serious water shortage, the furnace tube may rupture, then can hear the explosions, smoke and steam from the door, watching spray the fire door.

After the fuel oil is sprayed into the furnace, it is very easy to mix with air and burn rapidly and exothermic rapidly. Compared with the coal-fired combined fired water tube boilers coal fired with the same parameters and capacity, the thermal strength of the furnace volume can be doubled to 1046.6 × 10 kilo coke / m / m ·h. However, in order to reduce the heat load in the combustor area so as to avoid the overtemperature of the water wall tube in this area, the furnace volume is only reduced by about 1 / 3. Because the ash content in fuel oil is very little, it can not form slag on convection heating surface, so the flue gas temperature of furnace outlet can be up to 1300 ℃, and the pitch between tubes of convection heating surface can be reduced to increase the flow rate of flue gas, so as to increase the flow rate of flue gas. Heat transfer coefficient of heating surface, saving heating area and steel.

Three small way to improve the thermal efficiency of gas combined fired water tube boilers coal fireds from China's current environmental policy, small and medium sized (35 tons and below) coal-fired boiler gradually the use of alternative clean energy boilers gas boilers, electric boilers, etc., of which, to gas boilers Representative higher boiler efficiency, mainly due to combustion of the fuel gas boiler more fully, more power is generated, as compared to coal-fired boilers which can be about 20% higher efficiency and fewer emissions, for Keep the environment is more favorable. Improve the thermal efficiency of gas boilers, gas-fired boiler allow more economical operation of the boiler industry is the goal. From the current point of view, the use of gas-fired boiler more and more enterprises, the upgrading of thermal efficiency gas boilers, fast boiler for your summarizes the following three small way. 1, boiler design should be reasonable, furnace, combustion chamber, and to build the pipeline connection, we need to design and installation of boiler guided by professional and technical personnel. Avoid unreasonable structure design, resulting in a waste heat boiler to. 2, boiler pipe connections should always carry out regular checks, if there is a leak place to discover, to carry out maintenance shutdown immediately to prevent air leaks occur, endangering the safety of operating personnel and equipment. 3, many have joined the condensing gas boiler technology, the high temperature flue gas in a large amount of latent heat recycling it, then go back to the cycle of hot water collection, re-use, method of boiler combustion efficiency are improved.

The party now has a fast FGR technology and premix combustion technology such as low-emission products have been quickly occupied Beijing, Tianjin and the market, 120,000 square meters of combined fired water tube boilers coal fired production line 4 tireless efforts day and night to produce boiler equipment exported to the US, Russia, India, North Korea and other countries and parts of Europe, a number of countries to meet the needs of different clients.

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