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layout of boiler in sugar industry

How to improve the thermal efficiency of the layout of boiler in sugar industry? Boiler engineer in the design stage, has been designed with efficiency, but generally speaking, the actual operation and initial design thermal efficiency is about the same. E.g. oil furnace efficiency greater than 92%, the efficiency of the circulating fluidized bed boiler is usually higher than 88% (Zheng CFB boiler efficiency can be as high as about 92%). But boiler efficiency is not fixed, if your equipment operating efficiency is lower than the design efficiency, you can take steps to improve the thermal efficiency of the boiler.

The double horizontal pot water tube layout of boiler in sugar industry is mainly composed of upper and lower horizontal pots, convection tube bundles, water wall tubes, down tubes and headers. The front part of the boiler is a furnace, and a water-cooled wall is arranged around the furnace; the upper and lower horizontal drums are located at the rear of the furnace, and the two drums are connected by a curved water pipe. Most of the combustion equipment uses superheaters, economizers and air preheaters. The high-temperature flue gas flows from the upper part of the furnace to the convection flue through the heater. It first rises upwards and then rises in an S shape, flushes the convection tube bundle laterally, and then folds down into the tail flue, and then passes through the economizer and air. The heat exchanger is exhausted by an induced draft fan and a chimney. The boiler evaporation is generally less than 20 tons / hour (t / h), the working pressure is less than 2.5 MPa (MPa).

What principle of layout of boiler in sugar industry water level gauge boiler water level gauge that? It is used to determine the water level in the boiler. There are many boiler water level gauge, to introduce the following several common: 1, color water level gauge. For local display drum water level, it is the most widely used in situ water level. Shape is a vertical glass tube, the vapor space is connected to the upper and lower space and the water drum respectively, using the principle of U-shaped tubes communicate with the water level display, the optical properties of the material, water vapor using two portions are presented two colors green to red, to facilitate observation . Color level gauge reliable, intuitive display, may be connected to the control room through the camera, it is an ideal boiler water level gauge. But note that periodic flushing, and some ones short lamp life, need frequent replacement; 2, a magnetic level gauge. Are vertical pipes, there is a magnetic float, the tube arranged on both sides of many small magnetic body, when the water level changes, the float up and down movement drive, since the drive action of the magnetic poles inverted, both surfaces of the magnetic brush in different colors display water level. Common are white, red, green and red. HOWEVER, strictly speaking, a magnetic level gauge flap not appear directly in the drum water level, it is not used, a lower temperature and pressure in the boiler hot water boiler still employed, also a local display. Magnetic level gauge used more reliable, more intuitive display. However, when using the green red magnetic material, such as plant during normal incandescent lighting and low light observation is not clear enough. In addition, some manufacturers of products used for a period of time, the float will be stuck. Thus to be noted that regular cleaning; 3, electrical contact level gauge. Remote use. Sequentially arranged in the vertical direction a plurality of electrodes electrically inter-stage water level will be turned on or off to display the water level. Electrical contact level gauge indication accuracy, especially when starting and shutdown load fluctuations, should primarily electrical contacts and a display color prevail. But to pay attention to the isolation cook stove will damage; 4, balanced dual chamber container. Such displayed when starting the furnace and load fluctuation error is large, not too much explained.

Recently, Guizhou Province to combat air pollution, protecting and improving the quality of atmospheric environment, the protection of public health, promote the construction of ecological civilization, and promote comprehensive, coordinated and sustainable economic and social development, in accordance with the provisions of "People's Republic of China Air Pollution Prevention Law" and relevant laws and regulations of atmospheric pollution prevention and control regulations to be amended.

Article XVI: prohibits a planned urban area built or expanded cement, coal chemical, coal-fired thermal power, coking, metallurgy, ceramics and other serious air pollution industrial projects.

Article 24: Prohibition by waste-water treatment, tampering or falsification of monitoring data, in order to avoid on-site inspection for the purpose of the temporary shutdown, open the emergency discharge channel non-emergency situations, abnormal operation of pollution control facilities and other atmospheric discharge atmospheric way to avoid regulation contaminants.

Article 39: It should be the overall planning of urban construction, coal-fired heating in the region, promoting cogeneration and district heating. In the central heating pipe network coverage area, a ban on new or expanded scattered coal-fired heating boilers have been built coal-fired heating boilers can not discharge standards, should be demolished within the prescribed period the city government.

Shall manufacture, import, sale and use do not meet environmental standards or requirements of the boiler.

41: partial restriction sulfur, high ash coal mining, mining prohibition radioactive and arsenic and other toxic substances than standard coal. New coal mines must simultaneously supporting the construction of coal washing facilities. Have been built coal mines, it should be in accordance with national requirements, supporting the deadline for the completion of the coal washing facilities.

Prohibit the import, sale and burning of coal does not meet quality standards, to encourage high-quality coal burning.

Prohibit the import, sale and burning does not meet the quality standards of petroleum coke.

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