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safeguarding system for boiler water tube

4 tph WNS series condensing gas-fired steam safeguarding system for boiler water tube project for textile industryThe production processes of textiles such as drying, shaping, printing, etc require stable heat source support. Therefore, the boiler is an indispensable industrial equipment for the printing and dyeing industry. Founded in 1977, Rugao Dingyan Textile Co., LTD. is one of the top 100 enterprises in Nantong. The annual production capacity of Dingyan Textile can reach 10,000 tons of yarn, 1200 tons of thread and 30 million meters of cloth, Dingyan Textile mainly produces nearly 50 varieties of three series including pure cotton, chemical fiber and blended yarn. With the rapid development of the economy, the future competition of textile printing and dyeing industry will focus on multi-variety, technological innovation and green environmental protection. In order to improve the quality of products, Dingyan Textile planned to introduce a set of high-quality steam boiler. The sales manager of ZOZEN combined the actual needs of Dingyan Textile with the current boiler development situation and recommended ZOZEN energy saving and environmental protection boiler --- WNS series gas-fired steam boiler. This series of gas-fired boilers features fully automatic and safe operation to ensure the stability of the heat source during the production process. At the same time, the gas-fired boiler has remarkable energy-saving and environmental protection effects, the thermal efficiency can reach over 98%, and the NOx emission can be as low as 30 mg/m³, which fully meets the needs of the environmental protection era.

For atmospheric environmental quality issues, Harbin City, Heilongjiang Province, submitted a gratifying annual summary to the people within the city. By 2018, the number of days Hashi ambient air quality standard of 310 days, an increase of 40 days, since the implementation of our 2013 new environmental quality standards, the best of the year.

January 2019, the development of ambient air quality continues to improve. "Good weather" gratifying is the result of Harbin in straw Jinshao, such as firecrackers ban on burning the same time force. Among them, strongly promote the elimination of coal-fired boilers is a top priority. According to statistics, in 2018, out of a total of 1191 Harbin coal-fired boilers to provide strong support to reduce emissions of air pollutants.

Harbin coal-fired boiler was closed down following a major way, into the central heating (including wholesale) or clean heating pipe network replacement. According to the principle "and the appropriate and, should the electric power, the gas should be gas", the clean coal central heating pipe network coverage area, the boiler unit according to claim ownership, the priority region incorporated central heating pipe network; in concentration not covered by district heating network, in accordance with the wishes of the boiler unit property, taking clean renewable energy or alternative heating means, out of coal-fired boilers.

At the same time, various related businesses also improved stations, actively cooperate with the phase-out of coal-fired boilers.

2018 Hashi out of coal-fired boilers intensity of the strongest of the year, out of range built-up area expanded from 9 to zone outside built-up areas, out of a total of 1191 units. In District 9 built-up areas, on the basis of 10 tons of steam per hour out of coal-fired boilers to achieve "clear" on the further elimination of more than 10 tons of steam per hour to 99 coal-fired boilers; county (city) district built out of steam per hour 10 116 tons of coal-fired boiler units; elimination of financial support and utilities per hour 10 tons of steam coal-fired boilers 966 units in urban and outside built-up areas in the 9th district. "Achievements accumulated over the years, significantly reducing the use of coal, reduce emissions of pollutants." Director of Air and Noise Pollution Control at the Harbin environment bureau, Li Bin Tang said.

"In order to further solve the pollution problems of coal-fired, 2019, Harbin plans in urban areas, the county (city) built-up area basically eliminated 10 tons of steam coal-fired boilers and furnaces and tea, operating the stove, coal grain storage and drying equipment coal-fired facilities; urban built-up area basically eliminated 20 tons of steam coal-fired boilers, push 35 tons of steam coal-fired heating boilers out of the urban built-up area can not be a stable discharge standards; outside built-up areas out of 10 tons of steam can not be stable discharge standards of the following coal-fired boilers. "Li Bin Tang said.

The installation of pressure gauges for Fangkuai safeguarding system for boiler water tubes depends first on the pressure point and the space position of the pressure gauge (or pressure transmitter), and then on what pipeline accessories there are and how to lay them. (1) in order to measure the static pressure correctly, The extraction port must be perpendicular to the medium flow. No chamfering, flanges, and burrs. When measuring the liquid pressure, the pressure-taking port shall be drawn from the lower part of the pipe section, so as to prevent the gas in the liquid from entering the pressure-guiding line; When measuring the gas pressure, the pressure-taking port should be drawn from the top of the pipe section to prevent dust in the gas and water droplets from entering the pressure-guiding pipeline. (2) the inner diameter of the pressure-taking pipe is usually φ 7 / 1. 3mm (for water, steam), its length should not be too long (< 60m). If the diameter and length of the pressure-taking pipe are too small, the dynamic transmission of pressure measurement will be affected and the dynamic error will be increased. The inner diameter is too large, not easy to maintain and install. The pressure-taking line shall not be laid horizontally in order to prevent the accumulation of bubbles (when measuring the liquid) and the water column (when measuring the gas). (3) the pressure-taking line must be fitted with a needle-shaped valve (to cut off the pressure in the event of failure of the pressure-taking line in operation), Secondary needle valves (instrumentation, stop, replacement), condensing coil and elbows (isolation elastomers from high-temperature heating in the medium and easy to install sealing patches); and Sewerage valves and sewerage lines, etc. For special pressure measurement, the pressure taking line must also be equipped with vent valves, isolation rooms, etc. (4) the installation site of the pressure gauge (pressure transmitter) shall meet the environmental conditions (temperature, humidity, vibration, etc.) used by the instrument, At the same time, it should be easy to observe, repair and ensure safety. The pressure-taking pipeline of high-temperature medium must be coated with a thermal insulation layer to avoid scald when punching the tube.

In general, pharmaceutical air consumption by the safeguarding system for boiler water tube heating surface arrangement, receiving all the implications of water, the heat insulation effect and the like, which gas consumption is calculated as follows: = air consumption pharmaceutical boiler output boiler / heat efficiency / gas heat value. Then the air consumption pharmaceutical boiler 2 t = 1280000 ÷ 1.04 ÷ 9140kcal / h≈134, thus air consumption of the boiler 4 tons pharmaceutical substantially between 268m3-456m3, from the above equation, basically want to reduce the pharmaceutical Air consumption of boiler plants, measures can be taken is to choose high thermal efficiency, the configuration is relatively good gas boilers, boiler fuel burn rate so will be improved to a certain extent, then at the same time, natural gas consumption will part of the response to reduce the extent.