Chemistry High School

Production of Renewable Ammonia In recent years, significant interest has been paid to developing fuel and chemicals from renewable feedstocks, In this regard, you are requested to design a plant to produce 150 000 metric tons per annum of Ammonia (at least 99.5 wt. %). The hydrogen to nitrogen feed ratio is 3:1. The feed also contains 0.5 % argon. The feed is available at 40°C and 20 atm. The plant should operate for 330 days in a year, in order to allow for shutdown and maintenance. The plant is to be built in Nelson Mandela Bay. In this assessment, you need to assess the feasibility of such a process by conducting a conceptual design, that covers the following topics: 1.1. Design basis 1.2. Literature Survey 1.3. Process Description 1.4. Preliminary block flow diagram (BFD) and process flow diagram (PFD) 1.4.1. Block diagram of the entire process 1.4.2. Process flow diagram for ammonia synthesis 1.5. Preliminary major equipment list

Answers

Answer 1

It's important to note that this is a preliminary list, and a detailed engineering study would be required to finalize the equipment selection and sizing based on specific process conditions and requirements.

Based on the provided information, here is a preliminary major equipment list for the plant designed to produce 150,000 metric tons per annum of ammonia:

Feedstock Preparation:

Feedstock Heat Exchanger

Feedstock Filters

Reforming Section:

Primary Reformer

Secondary Reformer

Waste Heat Boiler

Steam Drum

High-Temperature Shift Converter

Low-Temperature Shift Converter

CO2 Removal Unit

Synthesis Loop:

Ammonia Synthesis Converter

Methanation Converter

Separation and Purification:

Ammonia Separator

Ammonia Purification Column

Methane Separator

Methane Purification Column

Compression and Storage:

Ammonia Compressors

Ammonia Storage Tanks

Nitrogen Compressors

Utilities:

Steam Generation Unit

Cooling Tower

Air Compressors

Power Generation Unit

Safety Systems:

Safety Relief Valves

Emergency Shutdown System

Fire Protection Equipment

It's important to note that this is a preliminary list, and a detailed engineering study would be required to finalize the equipment selection and sizing based on specific process conditions and requirements. Additionally, the list does not include all auxiliary equipment and instrumentation required for the plant's operation.

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Related Questions

How many liters of oxygen will be required to react with .56 liters of sulfur dioxide?

Answers

Oxygen of 0.28 liters will be required to react with 0.56 liters of sulfur dioxide.

To determine the number of liters of oxygen required to react with sulfur dioxide, we need to examine the balanced chemical equation for the reaction between sulfur dioxide ([tex]SO_2[/tex]) and oxygen ([tex]O_2[/tex]).

The balanced equation is:

2 [tex]SO_2[/tex]+ O2 → 2 [tex]SO_3[/tex]

From the equation, we can see that 2 moles of sulfur dioxide react with 1 mole of oxygen to produce 2 moles of sulfur trioxide.

We can use the concept of stoichiometry to calculate the volume of oxygen required. Since the ratio between the volumes of gases in a reaction is the same as the ratio between their coefficients in the balanced equation, we can set up a proportion to solve for the volume of oxygen.

The given volume of sulfur dioxide is 0.56 liters, and we need to find the volume of oxygen. Using the proportion:

(0.56 L [tex]SO_2[/tex]) / (2 L [tex]SO_2[/tex]) = (x L [tex]O_2[/tex]) / (1 L [tex]O_2[/tex]2)

Simplifying the proportion, we have:

0.56 L [tex]SO_2[/tex]= 2x L [tex]O_2[/tex]

Dividing both sides by 2:

0.56 L [tex]SO_2[/tex]/ 2 = x L [tex]O_2[/tex]

x = 0.28 L [tex]O_2[/tex]

Therefore, 0.28 liters of oxygen will be required to react with 0.56 liters of sulfur dioxide.

It's important to note that this calculation assumes that the gases are at the same temperature and pressure and that the reaction goes to completion. Additionally, the volumes of gases are typically expressed in terms of molar volumes at standard temperature and pressure (STP), which is 22.4 liters/mol.

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