Sichuan Iron and Steel Plant 260㎡ sintering machine large flue built-in boiler waste heat recovery p
2023-06-25 09:28:11Technical conditions
1 Meteorological conditions
- The extreme maximum temperature over the years is 42 ℃
- The extreme minimum temperature over the years -2.2℃
- The annual average temperature is 17.3℃
- The average temperature in January is 6.1°C
- The average temperature in July is 27.2℃
- Annual average relative humidity 86%
- The annual dominant wind direction is east by north
- The average annual precipitation is 1200mm
2 Working fluid parameters
260m2 sintering process system parameters:
| serial number | Name | unit | design value | Remark |
| 1 | number | tower | 1 | |
| 2 | Sintered area | m2 | 260m2 | Actual running 320m2 |
| 3 | Utilization factor | t/(m2h) | 1.35 | |
| 4 | Annual operating rate | % | 93.6 | |
| 5 | Sintered layer thickness | mm | 750 | |
| 6 | Pavement thickness | mm | 20-40 | |
| 7 | Sinter output | million t/a | 326 | |
| 8 | main exhaust fan | signage | ||
| 8.1 | number | tower | 2 | |
| 8.2 | air volume | m3/min | 16500 | Single |
| 8.3 | wind pressure | KPa | -15 | |
| 8.4 | Throttle opening | % | 80 | |
| 9 | Bellows under the sintering machine | total | twenty two | |
| 10 | Sintering end position | twenty one | bellows number | |
| 11 | Sintering end temperature | ℃ | ≥412 | The penultimate bellows at the tail |
- Equipment layout
- The complete set of sintering waste heat boiler equipment is arranged in the large flue, with a built-in waste heat boiler.
3 Technical requirements
3.1 Main design parameters of waste heat recovery boiler
3.1.1 Performance data requirements
| serial number | project | value |
| 1 | Vapor pressure (MPa) (g) | 1.6 |
| 2 | Steam temperature (°C) | 300 |
| 3 | Rated steam flow (t/h) | 12 |
| 4 | Feed water temperature (°C) | room temperature |
| 5 | Layout form | built-in |
| 6 | Flue gas side resistance loss (Pa) | ~400 |
| 7 | Boiler exhaust temperature (°C) | ~220℃ |
| 8 | Large flue final exhaust gas temperature (°C) | ≥120 |
3.1.2 Boiler performance data synthesis
| serial number | Name | unit | value |
| 1 | Flue gas flow | Nm3/h | 180000~190000 |
| 2 | Flue gas temperature (average) | ℃ | 350 |
| 3 | Boiler rated evaporation | t/h | 12 |
| 4 | steam pressure | MPa(g) | 1.6 |
| 5 | steam temperature | ℃ | 300 |
| 6 | Feed water temperature | ℃ | 25 |
| 7 | Feed water flow | t/h | 13 |
| 8 | Boiler ventilation resistance | Well | ≤400 |
4 Boiler Quotation
The quotation of the waste heat boiler is a single price, and the waste heat boiler is not like other fast-installed boilers that can quickly quote. As a domestic professional waste heat boiler manufacturer—ZBG group, we must first design according to the customer's working conditions to determine whether we can do it. If we can do it, we will calculate the boiler tonnage, pressure, etc. according to the actual situation and flue gas parameters. Parameters, after the design is completed, the quotation will be given to the customer.
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