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1.Ano ang Mga Uri ng Waste heat na na-recover mula sa isang Waste heat Boiler
The principle of waste heat boiler is that the fuel oil, gas and coal are burned to produce the heat emission of high-temperature flue gas. The high-temperature flue gas first enters the furnace chamber, then enters the waste heat recovery device of the front smoke box, then enters the pyrotechnics pipe, and finally enters the waste heat recovery device of the flue pipe of the back smoke box. The high-temperature flue gas turns into low-temperature flue gas and is discharged into the atmosphere through the stack.
1. High temperature flue gas waste heat: it is a common form, its characteristics are large output, concentrated production point, strong continuity, easy to recover and use, heat absorb accounted for 40~50% of the total heat, the waste heat boiler recovery heat, can be used in production or daily life heat and power generation.
2. Residual heat from high temperature furnace slag,
3. High temperature product waste heat: such as steel billet, high temperature forging part etc,
4. The residual heat of combustible waste gas and liquid waste,
5. Residual heat of chemical reaction,
6. Residual heat of cooling medium,
7. Waste heat from condensation water.
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2.Bakit Gumagamit ang Mga HRSGs Mga Finated Tubes？
Ang dahilan kung bakit ang mga fined tubes ay ginagamit sa HRSG: upang mapagbuti ang kahusayan ng mga heat heat boiler, dapat na mabawasan ang pagkakaiba sa temperatura sa pagitan ng temperatura ng usok at temperatura ng boiler steam. Mayroong mga lugar, pagtutol at pagkakaiba sa pagkakaiba-iba ng temperatura. Ang lugar ng pag-init ng heat heat boiler ay tataas. Upang mabawasan ang pagkawala ng paglaban ng daloy, ang lugar ng daloy ay maaaring tumaas at maaaring mabawasan ang bilis ng daloy. Gayunpaman, ang mababang daloy ng bilis ay nakatali upang mabawasan ang kahusayan ng paglipat ng init; Kaya upang madagdagan ang lugar ng paglilipat ng init; Kaugnay nito, ang lugar ng HRSG ay tataas sa kawalang-hanggan; Ang paggamit ng spiral finned tube ay maaaring matiyak ang sapat na lugar ng paglipat ng init, mapahusay ang paglipat ng init, at maaaring mabawasan ang pagtutol ng flue gas!
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3.Mga Tip sa Boiler
1. The drum is connected by a riser and a downcomer to form a natural circulation loop.Upper drum is filled with water and steam mixture from circulation loop,normally there will be water steam seperating device and feeding water distribution pipe.In order to improve the quality of boiler water some boilers are also equipped with continuous sewage pipe and dosing pipe. There is a regular sewage discharge device in the lower drum. On the outer wall of the upper boiler drum of steam boiler, there are also flanged short pipes connecting the main steam pipe and the secondary steam pipe and flanges and short pipes connecting the continuous water level gauge, pressure gauge, safety valve and other accessories. There is a regular blowdown device for discharging sediment in the lower boiler drum.
2. For larger capacity boilers, simply using natural separation of steam and water can no longer meet the requirements, need to install a seperating device inside upper drum.
3. The water-cooled wall tube is usually a no.10 or no.20 seamless steel tube with an outer diameter of 51~76mm and a wall thickness of 3.5~6.0mm. The distance between the center of the tube is generally 1.25~2 times of the outer diameter of the tube.Both finned tubes and bare tubes.
4. Water - cooled walls are generally fixed on the upper, the lower can be free expansion.
5. The function of steam superheater is to heat the saturated steam drawn out of the upper drum to a certain temperature of the superheated steam.
Industrial steam is mostly saturated steam, so normally general boiler are not equipped with steam superheater. A steam superheater is installed in the boiler only if the production steam requires a higher temperature and does not require an increase in steam pressure, or if superheated steam is required in order to reduce condensation losses during steam transmission. In industrial boilers, the temperature of superheated steam is 250℃ and 350℃ for the boilers with working pressure of 1.25MPa, and 350℃ for the boilers with working pressure of 1.6MPa.
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4.Pangunahing Kaalaman sa mga Boiler
Ang boiler ay tumutukoy sa mga kagamitan na gumagamit ng init ng enerhiya na pinakawalan ng pagkasunog ng gasolina o iba pang enerhiya ng init sa init ng tubig o iba pang daluyan ng nagtatrabaho upang makagawa ng singaw o mainit na tubig na may tinukoy na mga parameter (temperatura, presyon) at kalidad. Pag-uuri ng mga boiler: Application: Power Plant Boiler, industrial boiler Steam: supercritical pressure boiler, subcritical pressure boiler, superhigh pressure boiler, high pressure boiler, medium pressure boiler, low pressure boiler. Kapasidad ng pagsingaw: Malaking sukat, katamtamang sukat, maliit na sukat. Katamtaman: steam boiler, hot water boiler, organikong heat carrier boiler Pinagmulan ng init: karbon-fired boiler, oil-fired boiler, gas-fired boiler, basura ng heat boiler, electric boiler. Istraktura: Shell boiler, water tube boiler.
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