Modification of methanol\dimethyl ether production cooler (heat load calculation)
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At present, part of the production process of methanol, dimethyl ether and synthetic ammonia has begun to use evaporative coolers and evaporative condensers. However, the thermal calculation still lacks operating conditions data, because I am a student.* I still don’t understand the refrigeration technology and chemical production process very well! Please give me your advice!!:)
What is missing working condition data? Please ask the comrades in the surrounding crafts. Whether it is cooling or condensation, for the heat exchanger, there are four strands of materials in the hot side and the cold side. If the temperature, flow rate, and specific medium of each strand of material are clear, then it can be forgotten. Take a good look at the chemical engineering principles book, and then ask your craft comrades. This calculation is relatively convenient.
What is missing working condition data? Please ask the comrades in the surrounding crafts. Whether it is cooling or condensation, for the heat exchanger, there are four strands of materials in the hot side and the cold side. If the temperature, flow rate, and specific medium of each strand of material are clear, then it can be forgotten. Take a good look at the chemical engineering principles book, and then ask your craft comrades. This calculation is relatively convenient.
The evaporative condenser is still a bit complicated, involving the mass transfer and heat transfer process of water and air outside the tube. You need to read more information on this aspect.
The core issue is the total heat transfer coefficient (K).
The heat exchange of evaporative condenser\evaporative cooler involves heat and mass transfer process; it is a bit difficult to calculate the K value, so I would like to ask everyone!! Please feel free to speak! Methanol three-tower distillation: Ether removal tower cooler exhaust condenser fusel oil cooler normal temperature tower condenser pressurization tower refined methanol cooler The above system is a problem encountered in the synthetic ammonia co-production project. Please give me some advice, or provide the following engineering parameters such as temperature, pressure, mass ratio, etc. of materials entering and exiting the equipment. Mainly I want to calculate the heat load through parameters!! This post was finally written by bdqx_520 edited at 2008-1-4 20:41 ]
Are you confused about the temperature and flow rate of the four materials at the inlet and outlet of the hot side and cold side?
1. The design scale of this project for conversion gas cooler is 200,000 tons/year. The conversion gas cooler in the conversion section is planned to use air cooler and evaporative water cooler. The design process parameters are as follows: (1) Process gas entering and exiting the cooler: operating temperature: 175℃ ~ 110℃ normal operating pressure: 2.1MPa(g) maximum working pressure: 2.3MPa(g) flow rate: 130372 Nm3/h Composition: Component H2 CO CO2 CH4 N2 H2O Σ Vol% 46.2 10.7 5.1 0.5 1.7 35.8 100.00 (2) Allowable pressure drop of heat exchanger: ≤0.05MPa (3) Operation flexibility: 70~110% Can anyone help me calculate the calories?