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The molecular weight of CaCO3 is 100 and the molecular weight of MgCO _ 3 is 84. Therefore, in the case of complete scaling, the theoretical amount of scaling is: CaCO3 scale is 100 × 86.73mol=8673g=8.673kg. MgCO3 scale is 84 × 1.77mol=148.68g=0.149kg. Although the water quality of the boiler fully meets the requirements of the boiler supervision regulations, there is still residual hardness in the softened water after reaching the standard. In the operation of the boiler, the water supplied to the system is continuously circulating. The residual hardness will eventually scale at the high temperature of the boiler. The calculated results show that the amount of scaling can reach 8.8 kg in this heating cycle, which has become a threat to the local high temperature furnace tubes.

Pharmaceutical boiler installation boiler installation and commissioning of the top ten top ten pharmaceutical process flow holds many lessons, pharmaceutical companies commonly used in boiler is a steam boiler for food textile paper factory, then as a boiler installation and the user must be a certain idea of ​​the installation and commissioning of the boiler before it can supervise and operate more standardized, the following small series for everyone to do this with a simple understanding. a. To conduct on-site field trips prior to installation, see its software and hardware conditions meet the installation requirements. b. Check field piping, pumps, etc. to meet the requirements of the installation c. Check boiler control cabinet and wiring accessories case d. Check whether the device has the operating conditions e. debugging water treatment equipment, boiler feed water to ensure eligibility f. Boiler electrical control cabinet, troubleshooting. g. above the burner commissioning, guarantee stability, security h. i security measures of its operation. Operation of the boiler and boiler inspection personnel knowledge, operational knowledge, knowledge of job training j. cook stove is the pharmaceutical companies ten boiler installation and commissioning process, in order to ensure a smooth, safety and production efficiency per unit of time during the late pharmaceutical boiler operation, for example, pre-installation is a rather important step, every detail needs to exercise caution.

6 tph WNS series efficient gas-fired boiler for automobile painting industry

In the manufacturing process of automobiles, the painting process has the effect of rust prevention, corrosion protection and decoration. The metal surface treatment before painting and the painting process require the heat source provided by the steam boiler. ZOZEN WNS series gas-fired steam boiler obtains advanced manufacturing technology. The fully automated production line ensures the uniform size of the boiler components, realizes the assembly between the components, which effectively extends the service life of the boiler. In addition, in order to improve the overall thermal efficiency of this type of boiler, ZOZEN technicians have improved the boiler design. Large-diameter corrugated furnace and high-efficiency heat-conducting threaded tubes, combined with the energy-saving device at the tail of the flue, ensure that the exhaust gas temperature below 60℃, and the thermal efficiency is as high as 98%, which reduces fuel costs for enterprises.

Harbin Thermal Power Co., the main city of Harbin is the largest cogeneration business, the company bear the city's heating area of ​​24 million square meters, to provide heat supply for more than 400 agencies, enterprises and 140,000 residents. Currently, the company is actively respond to the latest environmental standards introduced in China, the group mobilized up and down, stepping up technological innovation, upgrading environmental protection facilities, the project is expected to complete upgrading coal-fired boiler at the end of this year.

Harbin Thermal Power Co., the existing five boilers for heating and power generation: where to cogeneration units No. 7,8,9, and the other two hot water boilers. No. 9350 MW units which since 2017 was completed and put into operation, has achieved ultra-low emissions standards during construction. 7, No. 8 is 300 MW units were built in 2005 and 2006, these two units of environmental transformation began in 2013. Harbin Thermal Power Co., according to the latest environmental requirements, environmental upgrading facilities. First, soot emissions transformation, the introduction of advanced electric bag filter, followed by addition of sulfur, in addition to the transformation of nitrate, new burners in addition to the low nitrogen oxides of nitrogen, a wet desulfurization technologies in addition to sulfur dioxide. After four consecutive years of continuous transformation, 7,8 units in 2017, all the transformation is completed, achieve ultra-low emissions standards. For the two 116 MW hot water boiler was built in 2013, it has long been included in the transformation plan. Earlier this year preparatory work has been completed and environmental transformation has entered the bidding process in mid-October to start construction, completed renovation project at the end of December.