14 ton coal fired CFB supply boiler for hot water
CFB technology has been typically associated with small-scale industrial boilers using difficult fuels. But with the emergence of utility-scale commercial installations is changing.
External structure of the supply boiler for hot water room layout problem to note 1, leading to the boiler room outside the doors should open outwards. Each boiler room should be at least two outlets, are provided on both sides. When the total width of the front end of the boiler (the boiler comprises a passage between the inner) of not more than 12m, and a boiler room area not exceeding 200m2 single boiler room and to be open only one outlet. 2, the boiler room door should not be used on a pull-down shutter doors or sliding door, single evaporator rated less than or equal 2t / width and height h of the boiler door homeowners boiler boiler assembly generally not less than the maximum dimensions plus 0.5m . 3, the ground should be flat boiler room without a step, no water in the boiler room floor drain hole (groove) should be set up at, to facilitate drainage. 4, boiler room should comply with building "architectural design code for fire protection" and "design of tall buildings for fire protection" requirements. 5, between the boiler wall (1.5 meters or less from the ground) should adopt cement plaster or tile veneer moisture protection and to facilitate washed with water. 6, boiler room operation site, as well as water gauge, pressure gauges, thermometers, flow meters, etc., should have adequate lighting. 7, operation of the boiler room should be open layout, and boiler water, boiler pressure measurement and control instruments concentrated in the operating room, and boiler and safety accessories should be reliable rain, wind, frost, anti-corrosion measures. 8, located in the wood workshop, no fireproof partition wall of the boiler, the application of non-combustible material, fire resistance of 4h material masonry firewall, the firewall directly on the basis of the masonry or reinforced concrete frame, the firewall should be cut off burning body or difficult to burn the roof structure, the roof and the body should be higher than 400mm non-combustion, combustion or higher hard body burning roof 500mm.
Since last year, the city of Yinchuan in Ningxia to develop clean energy alternative to coal heating work carried out, in order to adhere to the use of waste heat energy-based heating system, two years, a total removal of 212 coal-fired supply boiler for hot water units, designed over 20 million square heating area Meter. At present, Yinchuan City, the formation of a waste heat recovery and cogeneration-based, clean energy co-existence of a new pattern of heating, coal heating gradually withdraw from the stage of history.
According to Yinchuan City Housing Construction Bureau feedback, early last year, Yinchuan City, began to promote the implementation of "East of the West to give a" heat of long-distance heating projects, the long-distance transmission projects across the Yellow River, the basic realization of restructuring heat source, heat source interconnection point to ensure the city heating security and stability, environmental protection is of great significance.
At present, "East of the West to give a" central heating heating net charge of the project, the city branch, etc. have been completed, the east, the city water pipe network has been completed and started flushing cycle, is west of the water, water totaled 145,000 cubic meters.
At the same time, Yinchuan City, also build a heat source, thermoelectric Xixia complete the second phase of construction, the new 2 sets of 350,000 kilowatts supercritical coal-fired air-cooled heat generators, which can effectively replace Yinchuan City, 154 small coal-fired boilers, the annual generating capacity 3.85 billion kwh, heating capacity of 16.42 million square meters.
This year Yinchuan new cogeneration district heating area of 41 million square meters, the new heating pipe network 86 kilometers, is the largest investment project ever central heating, with the largest of the year.
Leakage supply boiler for hot water superheater, how to deal with the phenomenon of a burst pipe, tube leak detection alarm device. 2, the normal water flow is not greater than the steam flow. 3, furnace pressure transient and unstable prejudiced. 4, superheater tube side leakage sound, may not close the outwardly steaming. 5, the main steam pressure drop. 6, exhaust gas superheater tube side temperature drop. 7, the induced draft fan auto on abnormal current is increased. 8, through the squib low, the main steam temperature. 9, superheater, reheater steam temperature deviation is increased on both sides. 1 reason, defective material or post-manufacture, installation cause damage to the pipe, poor welding quality. 2, the inner tube superheater fouling, thermal excursions, etc., caused by over-temperature long wall. 3, fly ash wall thinning caused by wear and tear. 4, the secondary combustion occurs superheater area. 5, the superheater tubes debris. 6, improper use wall soot blower wear. 7, the water pipe plug superheater cause local overheating, or alternating stress cause fatigue damage. 8, boiler startup boost, warming too fast. 9, boiler overpressure long run. 10, the inner tube corrosion. 11, pipe aging failure. 1 process, superheater leakage is not serious, the leaks along the steam temperature to maintain normal operation, and should verify the leak site, and focus leaks timely reporting of development, the boiler load drop down operation to prevent damage to other blowing leak flow tube panels adjacent tubes or reduce damage to over-temperature, shutdown processing and application. 2, no leakage severely superheater maintained during operation, an additional leak fence manhole, inspection hole and suspended nameplate, prevent steam discharge wounding. 3, note that the monitoring to maintain the operation of the air preheater during operation, to strengthen the inspection checks, such as air preheater ash fouling seriously upon application shutdown process. 4, after the shutdown, ID fan should be retained, there is no discharge to be stopped after soda ID fan.
I currently have a forced hot water heating system with 3 zones, all of which have the circulator pump on the supply side of the line. I need to install a 4th zone and am being told that putting the circulator on the return side is more efficient. What are the pros and cons of the circulator's location?Online chat
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The boiler will have to be properly vented for safety. Depending on what type of boiler you have ( combi, powervent, hydronic ), will depend on what type of venting you will need. For example on a traditional gas fired forced hot water boiler you would generally vent this type of boiler with standard smoke pipe.Online chat
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The boiler provides and energy efficient supply of warm and comfortable heat, and is built to E.F.M. quality standards-the highest in the heating industry. This electric boiler is versatile and provides an easy-to-use heat source for forced hot water systems in: * New Homes * Replacement Systems in Existing HomesOnline chat
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Boilers can be hot water or steam, and either type can be gas or oil boilers. The piping systems are different for each type. The hot water system boiler uses a pump to circulate hot water while the steam boiler uses its own pressure to circulate steam throughout the system.Online chat
A member of the Wall community asks this question: What is the "safe" operating pressure in PSI for a hot-water boiler heating system, and what is the "safe" range in terms of temperature for boiler operation? One member responds: The highest pressure the boiler should ever see is stamped on the boiler tag - Usually 30- or 50-psi.Online chat
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If the boiler also generates domestic hot water, high pressure may be caused by cracks in the coils of the water heater, since the domestic water supply pressure usually exceeds 30 psi (207 kpa). The pressure relief valve should be mounted on the boiler.Online chat