The flue gas temperature of the boiler generally ranges from 120 ℃ to 350 ℃. 7% of the sensible heat and 15% of the latent heat in the flue gas are discharged directly into the atmosphere without being utilized. This not only causes a large amount of energy waste, but also aggravates the thermal pollution of the environment. On the one hand, the high-efficiency flue gas waste heat recovery device designed by us can not only meet the need of processing hot water or heating water, but also can cool the exhaust temperature of boiler to 100 degrees, so that the efficiency of boiler can be greatly improved. On the other hand, also for the national blue sky and white clouds environmental protection cause has made the due contribution.
We all know that boiler scaling will bring a variety of problems to the boiler, such as reducing the service life of the boiler, increasing unsafe factors, making the boiler metal brittle, virtually increasing maintenance costs, and so on. So we have to regularly clean the boiler maintenance. So what are the methods and techniques of Fangkuai boiler descaling? The editor will list for you one by one: first, the artificial scale removal method, loosening the bolts on the boiler sewage outlet is generally common at both ends of the boiler horizontal tube, and we can see the scale on the inner wall of the boiler horizontal tube. Then use a small shovel and other tools (no hard requirements, can remove the scale from the boiler and The scale is scraped off or shoveled off, then rinsed the inner wall with water to flush out the waste, but this method is more energy-consuming to our production staff, the second is chemical scaling, This is a convenient and quick method of scale removal, chemical descaling process: clean water washing boiler cleaning agent, clean water rinsing passivation treatment; Before cleaning, we should disconnect other systems that have nothing to do with the boiler, connect the cleaning tank, the cleaning pump and the boiler into a cleaning closed loop; rinse once with clear water, wash out the large particles of dirt, and then put in the scale remover for circulation cleaning Wash and decontaminate, the process is usually 2 hours, then rinse again, clean up the residue, put in the passivation agent, maintain. These are two methods used at present. For boiler scales, we can pay attention to the treatment of boiler water at ordinary times, specifically lime soda softening method. In the water to be put into the boiler, we can use lime soda soften water. Reduce the minerals it covers, or put chemicals into the boiler to soften the water.
To reduce the total coal consumption, reduce air pollutant emissions, Guigang Municipal People's Government announced the latest "2019 Guigang tackling air pollution control plan" proposed scheme: Guigang City is actively taking measures to reduce coal comprehensive use of renewable energy , natural gas, electricity and other energy alternatives to coal consumption, reduce the proportion of coal consumption, focusing on reducing the total non-electric coal consumption. New coal projects to implement alternative coal reduction, the implementation of inventory management, so that statistics can be verified.
Details are as follows.
First, the implementation of the total coal consumption control. Take measures to reduce overall coal, renewable energy, natural gas, electricity and other energy alternatives to coal consumption, reduce the proportion of coal consumption, focusing on reducing the total non-electric coal consumption. New coal projects to implement alternative coal reduction, the implementation of inventory management, so that statistics can be verified. October 2018 in conjunction with the regional government Council issued the "Guangxi county industrial park planning and adjustment plan" and other industrial park planning and implementation of the adjustment, the promotion of industrial parks to carry out "an area a heat source" upgrade, encourage 300,000 kilowatts or more coal-fired heating unit carried out the transformation in cogeneration planning guidance to promote the backward small coal-fired and coal-fired thermoelectric heat within the range of (biomass) integrated boiler shut down.
Second, accelerate the comprehensive improvement of backward small boilers. According to the State Administration of Work Market and three ministries "on the strengthening of energy-saving environmental protection boiler" (National City Supervisor ad hoc  No. 227) requirements to promote energy efficient boiler environmental protection, energy-saving environmental protection to promote the transformation of boilers, eliminate backward boiler. Coal-fired boilers built-up area to carry out an intensive investigation, the investigation out of the coal-fired boilers to register one by one, to establish accounting and inventory management, according to local conditions, Take Measures to develop small boiler (10 tons of steam per hour and below) Integrated remediation plan, the classification proposed remediation requirements, before the end of May 2019, the Municipal environmental Protection Bureau for the record. Carry out a comprehensive district built 10 tons of steam per hour and small coal-fired boilers out of work, according to the law to increase efforts to eliminate small coal-fired boilers in accordance with regulations, in 2019 the completion of small coal-fired boilers out of the task; all kinds of more than 10 tons of steam coal boiler strengthen environmental law enforcement supervision, strict implementation of emission standards for boilers that can not be stable discharge standards, shall order rectification according to law, after rectification still do not meet the requirements, shall not continue to use; to strengthen environmental law enforcement supervision of biomass boilers, in particular to strengthen regulatory biomass boiler ban on high-pollution fuel combustion zone of the city; biomass boilers boiler should be dedicated, efficient dust bags and other supporting facilities, prohibit blended with other fuels such as coal. The city and county-level cities above the built-up area in principle, to create a new 35 tons of steam per hour of coal-fired boilers and other regions in principle no longer new 10 tons of steam per hour and below the coal-fired boilers.
Boiler top priority is to pay attention to the transformation is complete, to carry out professional work test, in order to be put into use after passing inspection, testing and boiler also requires professional staff with the technological experience to complete. Pay special attention to after the change in boiler performance testing and security testing in all aspects, which are important measures of the boiler work and the use of security protection.
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