High quality industrial 2 ton gas fired steam boiler for paper mill

High quality industrial 2 ton gas fired steam boiler for paper mill

Strict accordance with the operation of the gas high quality industrial 2 ton fired steam boiler for paper mill feed water softening process is provided gas steam boiler fouling not only reduces the thermal efficiency of the boiler, but also increases the temperature of the boiler heating surface, damage to the heating surface, even causing the boiler explosion. Thus, soft water treatment equipment, strict accordance with the operation of the boiler feed water softening processing apparatus, the control of boiler feed water quality, delay the formation of scale. At the same time, real-time control the size of the boiler, boiler scale control, cleaning the scale, if necessary, it is very important. Since the gas steam boiler and vapor - water heat temperature is higher than the temperature of the air system of the boiler room, part of heat to the surrounding air by radiation and convection, which became the heat loss. boiler. Accordingly, when the insulating layer and the heat pipe of the boiler system damage or leak is detected, it should be repaired, to reduce heat losses. Steam boiler burner gas noise increases, mainly because of lack of or close the valve in the oil passage into the oil, oil filter plugging; or into the oil due to the low temperature viscosity is too high or oil pump. Temperature is too high; oil pump failure; fan motor bearing damage; dirty because the turbine wheel, the device too loud. When said failure when using gas boiler, and since the viscosity of the oil is too high, atomization is not easy (heavy oil); and because the distance between the nozzle and the cyclone unsuitable; In addition, since the burner worn or dirty; also because reserve tank temperature is too high, leading to the oil pump steam; oil boiler or because the oil is hydrated. Gas steam boiler feed water containing various impurities and calcium and magnesium scale substances, boilers inevitably expanded. Very low thermal conductivity of the scale, once contaminated surface is the surface heat, the exhaust gas temperature of the boiler will increase, and due to the increase in thermal resistance, heat loss of the exhaust gas will increase. Experimental data show, 1mm scale formation in boiler heating surface, the heat loss of the exhaust gas will increase from about 2-4%. Scale thicker boiler heating surface, the greater the resistance, the lower the thermal efficiency of the boiler.

20 tph WNS gas-fired high quality industrial 2 ton fired steam boiler for paper mill for milk products plantThe production and processing of dairy products require a large amount of steam to distill, disinfect, dry, and shape the food. The customer's boiler house is arranged in a single layer. After our technical staff visits the site and communicates with customers, ZOZEN decided to use two units of 10 tph oil and gas dual-use steam boilers in this project. This type of boiler adopts a mechanical and electrical integration structure, generous appearance, less investment in infrastructure; our boiler is strictly in accordance with the requirements of the customer to complete the standard, and we provide full equipment debugging, technical guidance, regular return visits, collection Feedback, which makes customer relieved and satisfied.

Recently, we learned, Shaoxing City, Zhejiang Province People's Government Office issued the "coastal city 2018--2019 autumn and winter tackling air pollution comprehensive management action plan", as follows.

Less adopt comprehensive measures to reduce coal total coal consumption, coal consumption in 2018 to ensure that the total amount of negative growth. New non-owned coal-fired units, the implementation of new large-scale coal-fired units and coal consumption capacity equal or reduction alternative.

Optimize the use of natural gas structure, in principle, to new natural gas cogeneration and gas chemical projects, gas will adhere to the reform, orderly manner "coal to gas" project.

Carry out boiler (with tea furnace, operating a stove, grain storage and drying equipment, coal-fired facilities) an intensive investigation to establish accounting and inventory management, to develop a comprehensive remediation program in accordance with the unified deployment requirements boiler city, according to the law in accordance with regulations to increase fuel coal boiler out of efforts to achieve all cleared 10 steam tons / hour and coal-fired boilers to prevent high-polluting fuel boiler rebound has been eliminated. Boiler registration strictly prohibit new steam per hour 35 tons / hour of coal-fired boilers, coal-fired boilers new emission concentration to meet ultra-low emission of air pollutants, strict control of new biomass boilers, coal-fired boilers embodiments and low nitrogen urban built-up area of ​​ultra-low emission biomass boilers transformation.

The inlet speed of gas-fired hot-water boiler before start-up should not be too fast, usually no less than 4 hours in winter, and 2-3 hours in other seasons, especially in the initial stage of water intake. The inlet temperature of a gas-fired hot water boiler is generally 50 °C, so the difference between the feed water temperature and the steam wall temperature in the drum is less than 40 °C. For gas-fired hot water boiler, the inlet water temperature can be equal to that of steam drum wall without complete cooling, otherwise the inlet water speed should be slowed down. When feed water enters the drum, it always first touches the lower part of the drum. If the difference between the feed water temperature and the drum wall temperature is too Large, the inlet speed is fast, and the upper and lower walls of the drum, the inner and outer walls will have a large expansion. Bad, on the drum caused a lot of additional stress, resulting in drum deformation, serious cracking. Due to the thickness and slow expansion of the drum wall, the tube wall connected to the drum wall is thinner and expands faster. If the inlet temperature of the gas-fired hot water boiler is too high or the inlet speed is too fast, the expansion will be uneven, the welded joint will appear cracks and the gas-fired hot water boiler will be damaged. The inner diameter of the decompression tube is usually φ 7~13mm (water and steam), and its length should not be too long (< 60m). Straightness of pressure pipe If the diameter is too small and the length is too long, it will affect the dynamic transmission of pressure measurement and increase the dynamic error. The inner diameter is too large to be easily maintained and installed. Pressure pipes should not be placed in the horizontal part to prevent the accumulation of bubbles (when measuring liquids) and water columns (when measuring gases). The pressure tap shall be perpendicular to the flow of the medium. Pressure faucet must not have chamfer, flange and burr. When measuring the hydraulic pressure of an electrically heated high quality industrial 2 ton fired steam boiler for paper mill, the pressure outlet should be removed from the lower part of the pipe to prevent the gas in the liquid from entering the pressure guide pipe; When measuring the gas pressure, remove the pressure splice from the upper part of the pipe to prevent dust and dust in the gas The droplets enter the ignition line. The installation site of the electric heating steam boiler pressure gauge (pressure transmitter) should meet the environmental conditions (temperature, humidity, vibration, etc.) used by the instrument, and should be easy to observe, repair and ensure safety. Insulation should be laid on pressure pipes in high temperature media to avoid burning during flushing. Pressure lines are equipped with needle valves (for cutting off pressure in the event of pressure line failures during operation), auxiliary needle valves (for use with instruments, stopping, replacement), condensing coils and elbows (isolation elastic elements from high-temperature media), Easy to install sealing gaskets) as well as sewage valves and sewers. For special pressure measurements, it's still pressing. Install discharge valve, isolation room and so on in the force pipe.

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