Urea production

[varunpandya333]

this ppt includes every aspect of urea production.

[Sagar Udyavara]

This pdf gives the technology used for urea production which has reduced plant construction cost and also minimizes the energy consumption hence reducing operating costs.

[Vishwanath Dalvi]

@Sagar:  The pictures are not clear.  Could you put up a higher resolution file?

[Vishwanath Dalvi]

@Varun:  Very nice.  Could someone do a profitability analysis with this.  I will see if we can do something in class.  Please remind me.

[Sagar Udyavara_11CHE1001]

This is the detailed explanation of the process of urea production as posted before developed by TOYO  with better resolution which also quantitatively states its advantages over modern processes.

[Vishwanath Dalvi]

Could you summarize what you have found here in a way that people can comment.

[Sagar Udyavara_11CHE1001]

ACES21  is a process for production of urea developed by TOYO technologies. The modifications made in this process and its advantages are as follows:

 

1) Reactor was kept on ground level. There was introduction of a vertical submerged carbamate condenser and a simple synthesis loop and no gravity flow. This overall reduced the construction cost of plant by making the plant more compact.

2) Small reactor by two stage reaction, less number of equipment in the synthesis loop resulted in reduction of equipment cost.

3) Low synthesis pressure was adopted by optimization and hence there was energy saving.

4) Plant operation was made easy and convenient by forced circulation in the high-pressure loop using a high-pressure ejector.

5) Also, lower synthesis temperatures were adopted resulting in less corrosion problems and hence less maintenance.

 

Quantitatively the advantages of this process can be summarized as follows:

 

Other Modern Processes                               ACES21

 

Capacity (MTPD)                                           3,250                                                   3,250

 

Steam (MT/MT)

(42 Bar, 380 °C)                                              1.0                                                       0.8

 

Electric Power (kWh/MT)                               58                                                        46

 

Cooling Water (m3/MT)

( Δt = 10°C)                                                     100                                                      81

 

Energy Consumption

Gcal/MT                                                          1.045                                                   0.835

 

Gcal/Year (1)                                                  1,171,710                                            936,240

 

Crude Oil equivalent (MT/Year)

(10,000 kcal/kg)                                              117,170                                               93,624

 

CO2 Emission (MT/Year) (2)                          362,520                                               289,670

 

Difference in CO2 Emission

(MT/Year)                                                       Base                                                    72,850