On the ISH heating HVAC industry event, fast Boiler bring new products customized for the paper and packaging industry well-built --- Euromonitor θ5 stunning debut, attracting various participants competing concerns. The product closed condensate recovery system, temperature condensate directly into the boiler chemical d scaler formula design, three-pass boiler with economizer + + structure air preheater for recycling heat from the high temperature condensed water source, the thermal efficiency of up to 95%, to save operating costs with immediate effect.
1, for manufacturing defects in the design should take the following measures: First, the rational design; Second, strict material off; the third is the correct preparation of the manufacturing process instructions and process card (including repairs); Fourth, establish the necessary rules and regulations; Fifth, improve the quality and sense of responsibility operators and managers.
2, to prevent overpressure. To ensure the sensitivity and reliability of the safety valve, an automatic drain needs to be done on a regular basis. Identify problems in time, also installed on a standard gauge for comparison.
3, to prevent overheating. Effective water treatment device must be configured and set up strict rules and regulations, the boiler does not reach less furring furring, no accumulation of grease. To check the fouling situation boiler outage, if the scale must be promptly cleaned.
4, to prevent internal corrosion. For large-capacity hot water boiler, the thermal oxygen or a chemical method of oxygen. In addition, to check the situation of internal and external corrosion. The extent of corrosion such as pile up or carry out repairs Patching means in accordance with (Chief Engineer units must have the approval of the program and report to the local technical supervision departments boiler).
Shutdown of the dry premix Maintenance module 1. Desiccant Method: After the desiccant method is to premix boiler chemical d scaler formula module is disabled, when the temperature of the boiler water is reduced to 100 ~ 120 ℃, all the water in the boiler let go by the furnace heat, drying the metal surface, and to remove scale and water residue in the boiler water system. Then placed in the boiler desiccant, holding the metal surface and dried, to prevent corrosion. There are three commonly used desiccant: anhydrous calcium chloride (of CaCl2) used an amount of 1.0 ~ 1.5kg / M3, lime (Cao) amount used 3 ~ 5kg / M3, the amount of silica used 1.5 ~ 3.0kg / M3, the desiccant is placed method: the drugs in a number of sub-Sheng Tong dish, respectively, into the bubble, and the joint box balling. The number and location should be loaded in the boiler maintenance records, so as not to forget to remove when put into operation. The desiccant should be placed in a furnace to close the respective valve soda immediately to prevent outside air from entering. The first check should be carried out after the desiccant put in a month. If found deliquescence, should be replaced immediately or drying. Later be inspected once every three months. This law applies to the maintenance shutdown a long time. The larger the volume of the total premix drum boiler water module volume ratio, the more this method is convenient. 2. Drying method: This method is at shutdown, when the temperature of the boiler water premix reduced module 100 ~ 120 ℃, for drainage. When the water exhausted by the furnace heat, hot air furnace or introduced Microflame point, the inner surface of the drying gas boiler module. This law applies only to the boiler corrosion during maintenance. 3. Method nitrogen: The nitrogen is the nitrogen sparge method within the boiler water system, and to maintain a certain pressure, to prevent air from entering. Since nitrogen is very inert, non-corrosive, it is possible to prevent corrosion of the shutdown of the boiler module premix.
Design requirements for flue of fuel gas boiler chemical d scaler formula roomThe flue should be straight, airtight, less accessories and less resistance, horizontal flue should be laid to maintain more than 1% of the head-up arrangement, as far as possible to avoid the layout along the slope. 2. The flue and chimney of the fuel gas boiler room shall be constructed of steel or reinforced concrete, and the lowest point of the flue and chimney shall be provided with water sealed air and water drainage pipes. 3. The steel plate thickness of metal flue is generally 4-6 mm. When designing the flue, it should be equipped with sufficient reinforcement ribs to ensure the strength and stiffness requirements. 4. The thermal expansion of the flue should be compensated, the compensation amount should be calculated and the correct selection should be made. 5. Heat preservation measures and reliability of steel flue The fixation of the. 6. A boiler corresponding to a chimney should be used in a fuel-fired boiler room. When several boilers are required to share a flue or chimney, the ventilation and suction force of each boiler should be balanced. 7. The necessary thermal and environmental measurement points should be installed in the proper location when the flue is arranged. A single oil-fired boiler with a rated evaporation capacity greater than or equal to 20t/h or a single rated thermal power greater than or equal to 14MW must be fitted with a fixed instrument for continuous monitoring of smoke and SO2 emission concentrations in flue gas. 8. Where smoke easily gathers, and when multiple boilers share a chimney or a total flue, each fuel gas Explosion-proof doors shall be installed on the flue after the boiler, and the position of the explosion-proof doors shall be conducive to pressure relief, and shall be located in a proper position not to endanger the safety of personnel and before turning, when the explosion gas may endanger the safety of the operator. Pressure relief guide tubes should be installed on the explosion-proof device. 9. For some boiler rooms with long flue, the resistance should be calculated and the corresponding blower and induced fan (when there are induced fans) should be selected in order to ensure the smokeless flow. 10. The chimney should consider the corresponding anti-corrosion measures, the flue gas temperature at the outlet of the chimney should be 15 ℃ higher than the dew point temperature of the flue gas, and when the exhaust temperature is lower than the dew point temperature of the flue gas, effective measures should be taken to prevent it. The smoke is poured upside down.