Method and apparatus for pyrolysis of a biomass
First Claim
Patent Images
1. An apparatus for biomass conversion comprising:
- a) a riser reactor having a mixing zone, an intermediate zone located above said mixing zone and forming interface with said mixing zone, and an upper zone located above said intermediate zone, wherein a biomass feed is mixed with a heat carrier material to produce a reaction mixture comprising said heat carrier material and a reaction product, which comprises oxygenated hydrocarbons;
b) a biomass feed conduit connected in fluid flow communication with said mixing zone for introducing said biomass feed to said riser reactor;
c) a lift gas conduit connected in fluid flow communication with said mixing zone for introducing a lift gas to said riser reactor to assist in producing a general upward flow in said riser reactor;
d) a heat carrier material conduit connected in fluid flow communication with said mixing zone for introducing said heat carrier material into said riser reactor;
e) a first quench stream conduit connected in fluid flow communication with said riser reactor at a location just above said interface of said mixing zone and said intermediate zone, resulting in a lower temperature in said intermediate zone as compared to said mixing zone; and
f) a disengager connected in fluid flow communication with said upper zone such that said reaction mixture is received in said disengager and at least a portion of said reaction product is separated from said heat carrier material within said disengager.
7 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for effective pyrolysis of a biomass utilizing rapid heat transfer from a solid heat carrier or catalyst. Particularly, various embodiments of the present invention provide methods and apparatuses which incorporate progressive temperature quenching and rapid disengagement of the heat carrier material and reaction product.
62 Citations
19 Claims
-
1. An apparatus for biomass conversion comprising:
-
a) a riser reactor having a mixing zone, an intermediate zone located above said mixing zone and forming interface with said mixing zone, and an upper zone located above said intermediate zone, wherein a biomass feed is mixed with a heat carrier material to produce a reaction mixture comprising said heat carrier material and a reaction product, which comprises oxygenated hydrocarbons; b) a biomass feed conduit connected in fluid flow communication with said mixing zone for introducing said biomass feed to said riser reactor; c) a lift gas conduit connected in fluid flow communication with said mixing zone for introducing a lift gas to said riser reactor to assist in producing a general upward flow in said riser reactor; d) a heat carrier material conduit connected in fluid flow communication with said mixing zone for introducing said heat carrier material into said riser reactor; e) a first quench stream conduit connected in fluid flow communication with said riser reactor at a location just above said interface of said mixing zone and said intermediate zone, resulting in a lower temperature in said intermediate zone as compared to said mixing zone; and f) a disengager connected in fluid flow communication with said upper zone such that said reaction mixture is received in said disengager and at least a portion of said reaction product is separated from said heat carrier material within said disengager. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An apparatus for the conversion of biomass material comprising:
-
a) a riser reactor comprising a mixing zone, an intermediate zone, an upper zone, and an interface between said mixing zone and said intermediate zone; b) a biomass feed conduit in fluid flow communication with said mixing zone and operable to deliver a biomass feed to said mixing zone; c) a heat carrier material conduit connected in fluid flow communication with said mixing zone and operable to deliver a heat carrier material to said mixing zone; d) a lift gas conduit connected in fluid flow communication with said mixing zone and operable to provide a lift gas into said mixing zone at a rate sufficient to maintain less than 1 second of contact time between said biomass feed and said heat carrier material in said apparatus; e) a quench stream conduit connected in fluid flow communication with said riser reactor and operable to deliver a temperature-lowering quench stream inside said riser reactor at a location above said interface, wherein said riser reactor is operable to release a reaction mixture from said upper zone, wherein said reaction mixture comprises a reaction product and a heat carrier material. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
Specification