5 ton oil fired hot water boiler in chemical plant

5 ton oil fired hot water boiler in chemical plant

After electric steam boiler shutdown, how to carry out maintenance in the long-term disabled electric steam boiler, furnace should pay great attention to external corrosion and maintenance problems. First, after power shutdown cooling steam boiler, the ash must be thoroughly cleaned and the heating surface fouling the upper grate, the lower portion of the furnace. Then to maintain a certain degree of natural ventilation flue. In general, in order desiccant moisture should be placed in the furnace, flue. The quicklime as a drying agent, within the furnace or flue gas per cubic meter should be placed generally about 3kg. After placing all the ventilation should be tightly closed doors. After the change of lime powder to be replaced. Low-lying position as boiler room, ground during shutdown severe flood tide, often approach should be used and placed a small fire to dry desiccant combination. If the boiler shutdown a long time, after the complete removal of soot coated with an anti-corrosion red lead paint in oil or other metal surface furnace. As for anti-corrosion maintenance methods inside the furnace shutdown, the shutdown Yaoan the length of time to be. In general, no more than one month shutdown maintenance wet available, more than one month should be taken to maintain dry. To note the following problems when a dry maintenance: desiccant boiler not in direct contact with the metal surface, may be mounted in a container such as the iron plate after the desiccant is placed, and a hole for shutting the other hand hole cover, valve steam, the water pipe change must cut lime powder should be replaced.

10 tons of gas turbine steam boiler burner it currently requires 10 tons of steam gas boiler steam boiler there are two types WNS10-1.25-Q SZS10-1.25-Q, and two kinds, i.e., three horizontal wet return back structure and vertical type double drum "D" type arrangement quick water tube boiler. It consists of upper and lower drum, membrane wall, superheater, economizer and convection bank composition, the burner disposed on the front wall, the fuel combustion in the furnace, the flue gas through the first convection bank, superheater, a second convection economizer tubes and into the chimney. 10 tons of gas boiler burners have split and one-piece points, integrated burner fan I see are axial fans, centrifugal fans with split, 90% of the 10 tons of gas boiler burner all-in-one, as to form two burner what a good way, this has yet to be explored. SZS10-1.25-Q has the following features in gas boiler: The product has the following characteristics: ⑴ This double boiler drum "D" type arrangement, a compact, small footprint, good flame fullness. ⑵ boiler lower support mode can be free to expand upwards. ⑶ using membrane wall furnace wall structure which reduces maintenance work and use of refractory bricks. This boiler ⑷ fender an airtight closed welded structure, good sealing furnace wall; outer layer of pressed boards, appearance, beautiful. ⑸ this boiler furnace inspection hole is provided for the use, maintenance provides a great convenience. Roof has explosion-proof doors. This quick ⑹ boiler structure can effectively shorten the installation cycle. ⑺ high thermal resistance material as a heat insulating layer, good insulation properties. ⑻ economizer arranged tail, can effectively control the exhaust gas temperature, high thermal efficiency of the boiler. ⑼ whole boiler steel holder on a strong base, convenient installation and transportation. ⑽ boiler heating surface has a surplus, soft drinks and large enough space to ensure the stability of the boiler parameters. ⑾ using automatic burner, combustion efficiency and an ignition control program and overpressure, flame protection. ⑿ continuous electrically adjustable water supply, and having a low water level alarm, the protection function chain. ⒀ using spray desuperheater, sensitive temperature adjustment, temperature control large amplitude. Second, the structure Introduction boiler 1, the main evaporation rated specifications: D = 10t / h of superheated steam temperature: t = 300 ℃ superheated steam pressure: P = 1.25MPa water temperature: tgs = 20 ℃ (except normal saline) boiler efficiency: η = 92.6% exhaust temperature: tpy = 136.3 ℃ desuperheater tYPE: hydrostatic pressure test boiler desuperheater spray: 1.75 MPa number of valve: drum 2 PN2.5, DN80 full open spring valve overheating an outlet header PN2.5, DN50 full open spring valve design of the fuel: 0 light diesel oil (Qydw = 41870kJ / kg); consumption 749.9kg / h of natural gas (Qydw = 37060kJ / Nm3); 847.3 consumption Nm3 / h

What anti-corrosion measures SZS water-tube boilers are divided into specific fire-tube boilers and water tube boiler structure according to the classification of the boiler body, according to the type of boiler fuel classified as a coal-fired boiler, oil boiler, gas boiler. Process boiler operation will have a certain degree of corrosion. Found sulfide under high temperature conditions, the flow of chloride ions and high temperature flue dust contained in the friction member is the main cause of corrosion of the boiler. A, for water-tube boilers, corrosion occurs primarily at the water wall or furnace wall, the temperature is higher. In particular, severe corrosion, heat utilization is low, less than 50% thermal efficiency. High temperature coating far-infrared radiation, high temperature up to 1700, may be maintained at a high temperature high emissivity, holding about 0.9, dense coating, excellent corrosion resistance. Second, for the fire-tube boiler, the corrosion occurs mainly on the water wall. Corrosion of high temperature oxidation and corrosion of various impurity ions sulfur, chlorine, fluorine ion etching, and abrasion dust in the flue gas. Can effectively increase the boiler water wall heat exchanger, the temperature of the water wall tubes can be reduced, slowing the rate of corrosion. Third, the external boiler, security risks caused by high temperature oxidation corrosion and high-temperature operating environment is client concerns, has a low thermal conductivity, purely inorganic coatings, environmental protection, can effectively prevent heat conduction, that is, to avoid the heat energy waste is also working to reduce the security risk operating environment. Fourth, the exhaust heat boiler, the flue gas condensation by corrosion is mainly caused by friction and dust. And flue gas heat exchanger during brushing energy corresponding high temperature coatings, protective substrate, extend the life of the substrate, saving energy resources, greatly reduce costs.

Expected by the end of October this year, Baoji City, Shaanxi Province will be completed 35 tons of steam, Chaigai actions totaling 379 coal-fired boilers, to achieve 35 tons of steam coal-fired boilers "clear" mandate.

Since 2013, environmental departments at all levels Baoji joint cooperation, overcome difficulties, temper forward, the coal-fired boilers Chaigai range extends from the urban area to the entire administrative region, Chaigai scale from 10 tons of steam and extended to the following 35 tons of steam, so far a total of Chaigai coal-fired boiler to reach 5424 units 8060.8 tons of steam, strong contributing atmospheric pollutant emissions and urban air quality continues to improve.

This year is the 35 tons of steam coal-fired boilers "cleared" ending of the task, do the task Chaigai 35 379 tons of steam coal-fired boilers is still very difficult, which, as a county district government initiative to advance planning, increase investment in clean heating, diversified ways to implement the transformation of coal-fired boilers. Currently, there are 59 sets of undesirable coal-fired boilers were removed.

Baoji City, iron-fisted rule haze headquarters director, he said: "We, as the lead department, attaches great importance to coal-fired boilers Chaigai work, held a special meeting to study the deployment of Chaigai work, in accordance with the door-to-one by one to find out the basis on Chaigai way, go through the county publicity, on-site guidance to support, on-site supervision and verification, etc., to urge coal-fired boilers Chaigai work for the city within the new investigation and the coal-fired boiler is within the range of Chaigai, one will find a Chaigai to ensure that before the end of the city's 10 coal-fired boilers Chaigai work perfect ending. currently, the city Qishan County, New District, Jintai District Chaigai has been basically completed the task. "

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