Patent ID: 8618325

Claim:
A method for producing urea from bio-mass, the method comprising the steps of: (i) cleaning a bio-mass feedstock to remove non-organic matter, the cleaned bio-mass feedstock including no more than 1% non-organic matter by weight; (ii) blending the cleaned bio-mass feedstock to obtain a homogeneous blend; (iii) pelletizing the blended bio-mass feedstock to a substantially uniform size; (iv) pulverizing the pellets to a fine particle size of 1 mm or less; (v) gasifying the pulverized pellets in a gasifier to create a syngas stream while maintaining a constant temperature of the gasifier within Â±25Â° C.; (vi) removing a CO 2 stream from the syngas stream; (vii) compressing the CO 2 stream to a pressure no less than 6,000 psi and no greater than 7,000 psi; (viii) providing an NH 3 stream in a bypass recycling loop at 30% conversion and a pressure no less than 6,000 psi and no greater than 7,000 psi; and (ix) combining the compressed CO 2 stream with the compressed NH 3 stream to form urea.