Method for catalytically processing slurry
View Patent ↗In a method for thermal processing of slurry, slurry is combined with a bio-mass to produce a mixture. The mixture is subjected in a heated mixer pump to a cracking temperature, thereby allowing the mixture to catalytically undergo a cracking reaction to produce a reaction mixture which is directly outgased in the mixer pump to produce an outgased portion and a solid portion. The outgased portion and the solid portion are separately discharged from the mixer pump; with the low boiling fraction of the outgased portion allowed to cool down for further processing, and the solid portion collected in a residual matter container for further processing.
1. A method of thermal processing of slurry, comprising the steps of:
combining slurry with a bio-mass to produce a mixture;
subjecting the mixture in a heated mixer pump to a cracking temperature, thereby allowing the mixture to undergo a cracking reaction to produce a reaction mixture;
directly outgasing the reaction mixture in the mixer pump to produce an outgased portion and a solid portion;
separately discharging the outgased portion and the solid portion from the mixer pump;
allowing the outgased portion to cool down for further processing;
collecting the solid portion in a residual matter container for further processing.
2. The method of claim 1 , wherein the cracking temperature is in the range of about 250° C. to about 380° C.
3. The method of claim 1 , wherein the combining step is executed upstream of the mixer pump.
4. The method of claim 1 , further comprising the step of adding a catalyst to at least one member selected from the group consisting of slurry and bio-mass.
5. The method of claim 4 , wherein the catalyst is added during the combining step of slurry and bio-mass.
6. The method of claim 1 , further comprising the step of dewatering at least one member selected from the group consisting of slurry and bio-mass before the combining step.
7. The method of claim 1 , wherein the subjecting step is executed in the presence of a nitrogen (N 2 ) atmosphere.
8. The method of claim 1 , further comprising the step of adding pure oxygen (O 2 ) or air to the solid portion in a controlled manner.
9. The method of claim 1 , further comprising the step of removing heat from the solid portion.
10. The method of claim 9 , further comprising the step of feeding back heat removed from the solid portion.
11. The method of claim 10 , wherein the removed heat is used for heating at least one member selected from the group consisting of slurry and bio-mass.
12. The method of claim 10 , wherein the removed heat is used for heating the mixer pump.
13. The method of claim 10 , wherein the removed heat is used for generating electricity.
14. The method of claim 1 , wherein the bio-mass is a biological waste material.
15. The method of claim 14 , wherein the biological waste material includes rape residues or wood residues.
16. The method of claim 4 , wherein at least one member selected from the group consisting of slurry, bio-mass, and catalyst, has a fine-grained structure.
17. The method of claim 4 , further comprising the step of recovering catalyst mass from the solid portion.