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Process material balance for the transformation step

2011-08-08View Original

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Raw material and product specifications: Flow rate (Nm³/h), Temperature (°C), Pressure (MPa(A)). Notes: Water gas: 276066.09, 241.6, 6.37; on a wet basis, with a water-vapor ratio of 1.48. Shifted gas: 63188.56, 40, 5.99. Un shifted gas: 75823.03, 40, 6.08. Utility consumption (water, electricity, steam, air, etc.) and energy consumption per unit of production are calculated based on 1000 Nm³ of (CO+H₂). Serial number, Item, Specifications, Unit, Consumption rate, Hourly consumption: 1. Circulating water: 33°C, 0.4 MPa(G); 14.8 tons/hour, totaling 618 tons/year. 2. Demineralized water: 35°C, 0.4 MPa(G); 5.39 tons/hour, totaling 224.7 tons/year. 3. Boiler feedwater at 104°C, 4.5 MPa(G): negative consumption of 1.03 tons/hour, totaling -43 tons/year. 4. Boiler feedwater at 104°C, 1.7 MPa(G): negative consumption of 0.494 tons/hour, totaling -20.6 tons/year. 5. Boiler feedwater for gasification cooling seal purposes at 40°C, 8.7 MPa(G): negative consumption of 0.96 tons/hour, totaling -40 tons/year. 6. Boiler feedwater for gasification thermal sealing purposes at 104°C, 8.7 MPa(G): negative consumption of 0.576 tons/hour, totaling 24 tons/year. 7. Electricity: 380V, 10kV; consumption of 22.18 kWh/hour, totaling 924.2 kWh/year. 8. Low-pressure saturated steam at 0.3 MPa(G): negative consumption of 0.389 tons/hour, totaling -16.2 tons/year. 9. Low-pressure saturated steam at 1.27 MPa(G): negative consumption of 1.02 tons/hour, totaling -42.5 tons/year. 10. Superheated steam at 2.5 MPa(G), 380°C: negative consumption of 0.607 tons/hour, totaling -25.3 tons/year. Consumption of chemical raw materials: Serial number, Name, Model/Specifications, Annual usage (tons), Initial loading volume (m³), Notes: 1. Catalyst QCS-01: 20×2. 2. Protective catalyst: 1.6×2. 3. Inert balls KK-25/25/50: 18.8, 1.2.4. Central control analysis parameters and frequency: Tag number, Sampling item, Sampling location, Control parameters, Sampling frequency, Analysis method, Notes: A2001: Water gas composition (%); sampling point: PG2001-450-; CO content: 43.15%; sampling frequency: once per shift; analysis method: Gas chromatography. Other components measured include CO₂: 23.16%, H₂: 32.61%, CH₄: 0.10%, Ar: 0.13%, N₂: 0.28%, H₂S: 0.30%, COS: 0.01%, NH₃: 0.25%, and H₂O/dry basis ratio: 1.5%. Sampling is done irregularly using a wet gas flowmeter. Similar procedures apply to other tag numbers such as A2002A/B, A2003A/B, A2004, A2005, etc. For saturated steam samples, parameters like salt content (≤5 mg/Nm³) are monitored; sampling frequency is once per shift, with titration used as the analysis method. Wastewater samples are analyzed for phosphate levels (PO₄³⁻ ≤2000 ppm); sampling frequency varies from irregular to once daily, with spectrophotometry being the analysis method. pH levels are also measured using glass electrode methods. Condensate samples are analyzed for ammonia and hydrogen sulfide contents; sampling frequency is once per shift, with gas chromatography employed as the analysis method. Deoxygenated water samples are tested for suspended solids (≤5 mg/L) and total hardness (≤0.03 mmol/L); sedimentation and EDTA titration are used respectively, while pH levels are determined using pH meters. Startup water gas samples are analyzed as required, using gas chromatography. Boiler chemicals are sampled once per tank; phosphate levels are measured via spectrophotometry
Reply #22011-08-09
:) Study* Study*, thank the original poster for sharing

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