IV. PROJECT PrOblEM StATEMENT Description of the process: Hydrogen production One of the main technologies that are used today to produce hydrogen is steam reforming (SR). A simplified description of the SR process listing the various units used is given below: - Natural gas (CH4) at ambient pressure and temperature enters the desulfuriozation unit to remove sulfur then it enters a fixed bed reactor. The reaction of CH4 and steam is usually carried out at temperature range of 500900C (fuel is added into the reactor to increase the temperature) and pressure of 20 bar in the present of Ni-based catalyst to produce carbon monoxide and hydrogen, according to the reaction: CH4+H2OCO+3H2. The hot gas leaving the reactor contains mainly H2,CO,CO2,CH4, and H2O is used in the steam generator to produce steam. The steam generator takes water and hot gases leaving the reactor to produce steam that is feed to the reactor. The exit stream from the steam generator enters a fixed bed reactor that convert carbon monoxide with the steam present into additional hydrogen and carbon dioxide. The gases exiting the reactor enters gas purification unit to separate hydrogen from other gases. Part of other gases a recycled back to the 1st reactor by combing it with the natural gas exiting the desulfurization unit. Questions: 2. Find NFPA 704 ratings of all chemicals used in the process. Based on the code ratings answer the questions below: (10 points) Is there any corrosion risk? What is your suggestion to prevent it? Discuss it. Is there any fire hazard risk? If yes, what is the action that needs to be taken. Discuss it. Is there any reactivity (instability) risk? If yes, what is the action that needs to be taken. Discuss it. Is there any health risk? If yes, what is the action that needs to be taken. Discuss it. 3. In the described process, is there any dangerous effluent being discharged to the environment? If yes, precise it. In your opinion, is there a connection between engineering professional ethics (as you learned previously in this course), and discharging a chemical substance? Briefly explain and specify all related NSPE codes (Canons) to justify your answer (10 points) IV. PROJECT PrOblEM StATEMENT Description of the process: Hydrogen production One of the main technologies that are used today to produce hydrogen is steam reforming (SR). A simplified description of the SR process listing the various units used is given below: - Natural gas (CH4) at ambient pressure and temperature enters the desulfuriozation unit to remove sulfur then it enters a fixed bed reactor. The reaction of CH4 and steam is usually carried out at temperature range of 500900C (fuel is added into the reactor to increase the temperature) and pressure of 20 bar in the present of Ni-based catalyst to produce carbon monoxide and hydrogen, according to the reaction: CH4+H2OCO+3H2. The hot gas leaving the reactor contains mainly H2,CO,CO2,CH4, and H2O is used in the steam generator to produce steam. The steam generator takes water and hot gases leaving the reactor to produce steam that is feed to the reactor. The exit stream from the steam generator enters a fixed bed reactor that convert carbon monoxide with the steam present into additional hydrogen and carbon dioxide. The gases exiting the reactor enters gas purification unit to separate hydrogen from other gases. Part of other gases a recycled back to the 1st reactor by combing it with the natural gas exiting the desulfurization unit. Questions: 2. Find NFPA 704 ratings of all chemicals used in the process. Based on the code ratings answer the questions below: (10 points) Is there any corrosion risk? What is your suggestion to prevent it? Discuss it. Is there any fire hazard risk? If yes, what is the action that needs to be taken. Discuss it. Is there any reactivity (instability) risk? If yes, what is the action that needs to be taken. Discuss it. Is there any health risk? If yes, what is the action that needs to be taken. Discuss it. 3. In the described process, is there any dangerous effluent being discharged to the environment? If yes, precise it. In your opinion, is there a connection between engineering professional ethics (as you learned previously in this course), and discharging a chemical substance? Briefly explain and specify all related NSPE codes (Canons) to justify your answer (10 points)