工大开元环保科技(南京)有限公司

简体中文 |

English

Green Urea Plant

Leading sustainable development with green urea solutions

About GDKY >

Solutions >

Green Urea

PROCESS

Green Urea Process

The core difference between the green urea and traditional urea (using coal or natural gas as raw materials) is the low carbonization of raw materials, energy-saving processes, and resource utilization of emissions. The typical process is as follows:

1. Low carbon raw material preparation stage

Production of Green Ammonia (NH3)
Capture of Low Carbon Dioxide (CO₂): Biomass/CCUS technology:

2. Urea synthesis and refining stage

Reacting green ammonia with low-carbon CO₂ in a synthesis tower to produce ammonium carbamate (intermediate product), which is then dehydrated to form urea (CO (NH₂)₂), the reaction equation is:
2NH₃ + CO₂ ⇌ NH₂COONH₄ ⇌ CO(NH₂)₂ + H₂O

3.By product treatment and recycling

Green power

Hydrogen
preparation

Hydrogen
storage

ASU/PSA

Nitrogen

Ammonia
synthesis

Co2 capture

Co2 purification

Urea synthesis

Evaporation and
concentration

Crystallization
and granulation

Waste heat
recoveny

Urea packageand storage

Dust treatment

Preheat/others

Dust recovery

Wastewater treatment: Membrane bioreactor (MBR) is used to treat production wastewater, recover ammonia and urea, and achieve a water recycling rate of over 95%, avoiding ammonia nitrogen wastewater pollution in traditional processes.
Waste gas treatment: Unreacted NH3 and CO₂ during the synthesis process are recycled through a low-temperature condensation + adsorption recovery system, and the ammonia content in the exhaust gas is less than 10ppm (traditional processes are 50-100ppm).