New design 2000 kw industrial coal fired hot water boiler
35 tph SHL series field assembled chain grate steam boiler for oil refining industryIn the refining industry, steam is the main factor affecting the energy consumption of enterprises, which directly determines the quality of oil products and the economic benefits of the enterprises. Jinxi Petrochemical is affiliated to China National Petroleum Corporation. It was founded in 1939. After several decades of development, it now has a crude processing capacity of 6.5 million tons per year. The main products include gasoline, jet fuel, diesel, petroleum coke, etc. In recent years, Jinxi Petrochemical has accelerated its pace of development and is in urgent need of introducing a high-efficient and energy-saving boiler system. Regarding the actual production needs of Jinxi Petrochemical, ZOZEN recommended the safe and efficient SHL series field assembled water tube steam boiler and tailored the boiler system technical solution. This series of boilers has wide coal adaptability, the boiler water circulation adopts all-natural circulation, and each heating surface has relatively independent down comers to supply water, ensuring the safety of the overall water circulation. The large furnace design can extend the residence time of the flue gas in the furnace to make the full combustion of the fly ash and combustible gas. In addition, the flag pattern heating surface absorbs the temperature of the flue gas to a large extent, which improves the thermal efficiency of the boiler. The steam boiler provides sufficient and high quality steam heat source for the production line of Jinxi Petrochemical.
In a number of bidders, the party quickly ready gas water tube boiler with its unique advantages of low nitrogen come out on top; the low nitrogen gas water tube boiler has the following advantages. 1, boiler factory ready, body welding, manufacturing completed in the factory, quality is the best guarantee to ensure the long-term safe and reliable operation of the boiler. 2, a small work site installation, short cycle, the boiler body all-membrane wall structure, effectively reduce heat loss boilers, to improve the thermal efficiency of the boiler. 3, boiler furnace, convection and rational use of two-pass arrangement flue gas velocity, effective control of the flue gas resistance, no fan, lower operating power consumption, energy saving. 4, micro-pressure combustion, the boiler to prevent the air leakage phenomenon, to effectively control exhaust excess air coefficient, reducing heat losses, improved boiler efficiency. 5, with forced water circulation system, the flow rate of each process are selected in accordance with the recommended standard upper limit value, to ensure that the cold boiled heating surface does not occur too, causing water hammer or squib; preventing sedimentation oxygen corrosion and impurities in the water, to avoid heat boiler accident damaged surface;? burner flame, gas overpressure or low pressure, 15 kinds of safety warning and fault protection device leakage protection, gas, comprehensive guarantee safe operation of boilers;? intelligent integration operation control system, with touch-screen operation Dual purely manual control buttons and functions.
Internal gas-fired, gas-fired fuel management is equally important for wear to how to do? Detailed examination is the key, fuel management is equally important. We can according to operating conditions, gas-fired, time, planning and reasonable arrangements for wear of the check, when using fuels strict control of particle size into the furnace of coal and limestone particle size of bed material similar to strict customs, boiler waste to be treated before discharge. Want to reduce the impact on the water wall tube may be appropriate to adjust air pressure, air volume, can effectively reduce the wear and tear of the water wall. Maintenance shutdown time is generally in a standby or shutdown, check items include wear the furnace wall, the furnace seals are tight, leak or absence of smoke and the like. In the case of wear was found to be timely repair and welding, to ensure the normal operation of the steam boiler. Generally gas prior to combustion boiler needs to be filled in the combustion chamber fossil fuel, fossil fuel and bed material, the full integration of recycled materials in an air convection wind speed, wind strength and rigidity of the bottom of the apparatus, the inner core region of upwardly movement, the outer annular area of the reflow furnace wall along a downward extension of the coal particles in the furnace residence time, mineral particles, fly ash and flue gas contains a large number of large amounts of fly ash particles causes the waterwall tubes kept fast erosion wear, wear thin wall thickness, resulting in wear and tear.
Steam boiler accident type and processing method, and use common sense safety boiler steam boiler accident type and processing method, overpressure accident 1 boiler, boiler overpressure phenomenon of (1) a sharp rise in steam pressure, exceeds the allowable working pressure gauge pointer over " red line "safety valve after the 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. Second, an accident boiler water, boiler water shortage (1) below the minimum safe water level line, or can not see the water level, the water level gauge 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. 2, boiler water treatment (1) through the "waters", sentenced to severe water shortages, emergency shutdown must be prohibited blind to the boiler feed water. (2) through the "waters" sentenced to a slight lack of water, it should reduce fuel blast, the wind, and slowly feed water. Third, full water boiler 1 accident phenomenon (1) above the maximum allowable water level line, or can not see the water level, the water level gauge glass (plate) dark color boiler filled with water. (2) all of the water phase as a color level gauge indication color. High-water alarm signal (3) water level alarm occurs. (4) decreased superheated steam temperature. (5) water flow is not normally greater than the steam flow. (6) water in a large number of sub-cylinder, severe trap operation. (7) with a large amount of water steam severe, increased salinity, water hammer occurs in the sound of the steam pipe, the steam connection flange outwardly dripping take place. 2, boiler full of water treatment rinse water table, determined to be minor or serious full of water full of water. Method: Close water table, the water pipe connected cock, then open drain cocks As can be seen from the decreased water level, indicating a slight full of water, the water supply is stopped, the drain valve open, put to the normal water level. Such as severe filled with water due to take emergency shutdown measures.