diverter valve combi boiler
Guangdong Provincial Quality and Technical Supervision regarding the development of biomass briquette diverter valve combi boilers special work
Recently, Guangdong Province issued "Notice on biomass briquette boilers special work" (the "Notice"), requiring the province since the beginning of July biomass briquette boilers carpet Mocha by three months the complete list of developed and complete the scattered dirt biomass boilers in the province before the end of 2019, direct combustion, such as non-compliance out of chaos and rectification.
First, remediation objects
According to "People's Republic of China Air Pollution Prevention Law" and "Guangdong process boilers pollution remediation plan (2016-2018 years)", (Guangdong ring  No. 12), this special work-out and the quality of the main targets include: direct burning biomass boiler, the boiler does not meet the high-pollution fuel combustion zone ban management requirements, central heating boilers dispersed within the heating network coverage, the boiler gas pipeline network coverage, the use of coal and its products the dual-fuel or multi-fuel biomass fired boiler, coal-fired boiler into a biomass briquette boilers do not meet the legal reform program, it has been approved by the people's government the right to shut down the boiler and other companies.
Second, the remediation measures
(A) strengthen the management of biomass briquette boiler
New boilers should biomass briquette Briquette dedicated biomass boilers (or dual-fuel fuel designs allowed). For the latter meet the conditions for registration of quality supervision departments also must apply for environmental procedures according to law, be put into use.
(B) strictly regulated pollutants raw material is fired boiler
Environmental protection departments should strengthen supervision of pollutant emission biomass-fired boilers molding, organize supervision and monitoring of the discharge port of inspection car, pollutant emission concentration of biomass fired boiler to reach or better than the current corresponding to the natural gas boiler emissions standard (conversion 9% oxygen content reference emission concentration), the concentration of carbon monoxide emissions of less than equal to 200 mg / cubic meter, the feed inlet video surveillance facilities biomass fired boiler is to be networked and environmental protection sector, more than 20 tons of steam biomass molded fuel boiler to be installed on-line monitoring equipment, and networking with the environmental protection departments to encourage 20 tons of steam biomass fired boiler to install online monitoring equipment. For pollutant emissions are out or do not meet the requirements dealt with by the environmental protection department according to the law, the quality supervision department cooperate with law scrapped boiler, write-offs.
Third, the time node
"Notice" announced the schedule for the remediation activities: biomass briquette boiler before June carding meet the special requirements of the boiler, the development of monitoring plans by the local environmental protection department, by supervisory monitoring, enterprise self-monitoring measures to ensure that in 2018 exhaust gas monitoring complete biomass fired boiler is in the list before the end of the boiler to investigate and punish excessive emissions.
7 to 10 months focusing on remediation biomass briquette boilers do not meet the special requirements of the boiler. Since August, the quality supervision departments throughout the province last month to the cancellation of the 5th of each month, scrap, corrective actions and a list of biomass briquette boiler re-enable the exchange to the same level of environmental protection department, the environmental protection department of the list with boiler organizations atmospheric monitoring pollutants.
In addition, quality inspection departments to be before the end of 2018, before the end of 62,019 years to complete before the end of October 2019 were 30%, 70%, to urge the rectification work 100% of the boiler problem.
After you have a list of remediation raw material briquette boilers, by supervisory monitoring, self-monitoring and other measures to organize corporate environmental protection departments in the country to receive quality supervision departments to provide complete exhaust gas monitoring within two months, to ensure that all students complete before the end of 2019 material fired boiler emissions monitoring.
Fourth, the work requirements
(A) submit the required work ledger
Listing biomass briquette boilers local quality supervision departments to the end of June 2018, is currently in line with energy-saving features of the device and safety requirements submitted to the Provincial Quality Supervision Bureau, the Provincial Quality Supervision Bureau to exchange Provincial Environmental Protection Office. The second half of 2018 --2019 end of each quarter, the environmental protection departments throughout the progress of work on the 5th an accumulation of sound required to submit the Environmental Protection Agency.
(B) a comprehensive inventory, leaving
To work closely local quality supervision departments and environmental protection departments, clear name and contact details, according to "local management, levels of responsibility, seamless, comprehensive coverage of" principle, carpet-Mocha, timely updated sound biomass briquette boiler list, the implementation of ledger-style, pin number management. A complete rectification, a pin number.
(C) strict law enforcement, supervision of implementation
Local quality supervision departments and environmental protection departments according to their respective functions, like take the time node, according to the law to carry out renovation work on the investigation, to ban the work may not be implemented, to promote the progress has lagged far behind, regulatory serious dereliction of duty, serious accountability related personnel responsibility. Provincial Environmental Protection Bureau, Quality Supervision Bureau will form a joint inspection teams fired boiler renovation work carried out around the biomass conduct spot checks, reporting the progress of work.
Overall, the Guangdong Province to seize the chaos veered to burn biomass briquette industry in recent years in existence, the name of biomass, coal and other solid chaos, both for air pollution control pollution, but also conducive to purifying biomass briquettes industry ecosystem, promote the healthy development of the industry norm.
Gas-fired diverter valve combi boiler medium test and cold cycle (1) the heat carrier used in the organic heat carrier furnace must be qualified and the operating temperature must be consistent with the heating conditions. The outlet temperature of boiler is at least 30 ℃ lower than that of heat carrier and 40 ℃ lower than that of heat carrier, otherwise it will decompose and fail in advance. (2) Oil loading: the injection pump of the qualified heat carrier for testing shall be injected into the boiler and, when the oil injection pump is injected into the system, the valves of all heating systems in the furnace body shall be re-checked and the sewage valve shall be opened one by one to remove the air until the oil flow is closed, Stop oil injection and start circulating pump when high expansion tank level meter appears. Cold oil circulation. (3) Cold oil cycle: the purpose of the cold oil cycle is to test whether there is resistance in the whole heating system and whether there is leakage in the valve of the equipment. Each pump must be wheeled to start cold oil circulating in the system for no less than 6 hours. (4) cleaning filter: some metal and impurity deposits in the system in the cold oil cycle are shut down with the cold oil in front of the oil pump, and the filter is thoroughly cleaned after the cold cycle is finished. When the organic heat carrier is used, the outlet temperature of the carrier is lower than the maximum operating temperature of 20 ℃ and 40 ℃ provided by the manufacture, and the adjustment index is the main one. Close to the outlet temperature, when the temperature difference between the inlet and outlet decreases, the combustion should be reduced accordingly. Combustion should be intensified when the return temperature is reduced. Never blindly raise the outlet temperature to increase the heat supply. When the outlet temperature overheating instrument alarm, the furnace should be shut down in time to clean.
In condensing gas diverter valve combi boiler 1. When to maintain condensing gas boiler is mostly made of a metal housing, they must pay attention to prevent moisture, it is worth to remind that a bottom plan must not run gas boiler water, water once it susceptible to corrosion, erosion after the enclosure is not only unsightly but also affect the insulation effect, and some even affect its safety. Corrosion also one of the easiest way is to paint coated boilers, this shortcut will not only enhance the aesthetic appearance of the boiler, but also reduce the possibility of dangerous accidents. 2. When using a condensing gas boiler, 2-3 weeks to check once every 3-6 months on a comprehensive inspection, maintenance and the best every time. Check the boiler, is divided into two inner and outer portions, wherein the weld should pay particular attention to the corrosion of the steel sheet and, once found severe corrosion must be repaired. If defective boiler long neglected, is likely to have serious security problems, by then more harm than good. 3. If there is no long-term use, the need maintenance, and can be taken within a month of wet disable maintenance of law, but more than a month, we should dry the maintenance of law. Maintenance of the law condensing gas boiler are many areas requiring attention a lot, though it itself does not pose any safety problems, but the wrong use may also cause a lot of problems. 4. Wet Maintenance: full system of a boiler with an alkaline aqueous solution, anticorrosive thin film is formed on the metal surface, isolated from the air, to prevent oxygen corrosion. Shutdown time is generally no more than one month may be employed in this method. The desiccant process maintenance: condensing gas boiler shutdown longer time, with better maintenance effect dry. The boiler shutdown, the water exhausted, internal and external washing, drying the boiler, and then put into the pot desiccant container open and close the hole, hand hole, port mouth and the chimney, and isolated so. 6. The pneumatic Maintenance: water exhausted furnace, remove the pot and scale, impurities and dried, and then using nitrogen and ammonia gas into the furnace through the cylinder from the highest pressure boiler.
One ton gas steam diverter valve combi boiler to produce one ton of steam required number of cubic meters of natural gas First, we need to understand the need to absorb 1 ton of water into steam heat, and the heat released by combustion heat value of natural gas required by the boiler equipment, passed to medium water, the water absorbs heat changes in the physical properties of cold water into hot water and then gasified into steam, which will take it to absorb heat about 600,000 kcal natural gas quality. of course, the quality of the combustion engine is the most important, good product energy-saving gas boiler quality is a major factor raw gas steam boiler 1 t of steam per air consumption; heat value of natural gas per cubic 9000 kcal; thermal efficiency of the boiler 0.91; Job boiler can draw heat transfer index of 0.91x9000 = 8190, by 600,000 / 8190 = 73.000, i.e., each theoretically produce one ton of water vapor, gas consumes about 70-75 square.