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 [2018] 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.

Necessity hydrostatic test before the gas hot heat water boiler 3d / steam boiler operating gas: gas hot water boiler steam boiler or gas components by each group after installation is finished, after a long-distance transport, handling, installation, and will inevitably collide damage, it is necessary after installation to conduct a pressure test. Practice has proved that, by the boiler pressure test to discover defects promptly take appropriate measures in order to ensure the safe operation of the boiler.

The temperature difference between the upper and lower walls of gas-fired boiler will cause certain damage to the boiler body, which will cause the compression stress on the upper wall of the boiler and the tensile stress on the lower wall. When the stress reaches a certain extent, the gas-fired boiler can be damaged or even cracked. Why would there be a difference in temperature? That is because there will be a certain degree of difference in temperature between the upper and lower walls of the drum in the initial stage of ignition of the gas-fired boiler, which is due to the low temperature of the metal steam on the wall of the boiler at the initial stage of heating up, and the condensation and heat release of the steam on the wall of the drum. The contact heat between the lower wall of the drum and the water also occurs, but the exothermic coefficient of steam condensation is higher than that of water. Larger, more heat absorption on the upper wall of the drum, so the upper arm temperature of the gas-fired boiler is much faster than the lower wall. This requires us to pay attention to some operation items in the operation of gas-fired boiler, so as to avoid the damage of gas-fired boiler and ensure the normal operation of gas-fired boiler.

The relevant principles and methods based on different principles of operation, can be divided into the form of a steam boiler, i.e., "natural circulation" as the main mode of operation, "natural circulation" as a primary mode of operation of the hot heat water boiler 3d can remove the power supply external water circulation loop. The so-called "natural circulation" refers to the internal circulation of hot water boiler power is provided by the water, which is supplied from the density difference of water at different temperatures.

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