EGUEEI-PED OF SECTION IOO Toluene is pumped from a storage tank (VI0I) on ground floor to a reactor (RIOI) on level 2 at beight H2 using a centrifugal pump (PI0I). The pipeline is 100mm schedule 40 commercial steel, and is 100m long from the tank outlet to the reactor inlet. The pipeline has 890 standard long ellbows, 2 globe valves that are fully open, 4 gate valves (2 fully open, 21/2 open). The tank and reactor are both at atmospheric pressure. The lowest level when the tank is empty is Lain and the highest is Lay when the tank is full. The reactor is to be filled from Hmi to Hmar before the reaction batch starts. The full batch requires 15 tonnes of methanol and the batch fill-time is set to tar to optimize number of batehes per day. Estimate the power required by the pump by performing the following steps: a) Calculate the design static head of the system (head in m) [3] b) Specify the piping dimensions of the system (ID and OD in mm) [3] c) Provide the design flow specifications for the pump i.e. flowrate (m3/hr) and velocity (m/s) [3] d) Calculate the power required by the pump at design flow specifications. [16] H2=5m,Lmix=1m,Lmax=5m,Hmin=0m,Hmax=2m,tmat=30min,T=30C. Take the pump efficiency as 70%. Physical properties of toluene: density 874kem3, viscosity 0.62mNm2 s. EGUEEI-PED OF SECTION IOO Toluene is pumped from a storage tank (VI0I) on ground floor to a reactor (RIOI) on level 2 at beight H2 using a centrifugal pump (PI0I). The pipeline is 100mm schedule 40 commercial steel, and is 100m long from the tank outlet to the reactor inlet. The pipeline has 890 standard long ellbows, 2 globe valves that are fully open, 4 gate valves (2 fully open, 21/2 open). The tank and reactor are both at atmospheric pressure. The lowest level when the tank is empty is Lain and the highest is Lay when the tank is full. The reactor is to be filled from Hmi to Hmar before the reaction batch starts. The full batch requires 15 tonnes of methanol and the batch fill-time is set to tar to optimize number of batehes per day. Estimate the power required by the pump by performing the following steps: a) Calculate the design static head of the system (head in m) [3] b) Specify the piping dimensions of the system (ID and OD in mm) [3] c) Provide the design flow specifications for the pump i.e. flowrate (m3/hr) and velocity (m/s) [3] d) Calculate the power required by the pump at design flow specifications. [16] H2=5m,Lmix=1m,Lmax=5m,Hmin=0m,Hmax=2m,tmat=30min,T=30C. Take the pump efficiency as 70%. Physical properties of toluene: density 874kem3, viscosity 0.62mNm2 s
