US 9,862,899 B2Granted

Gas distribution arrangement for rotary reactor

AssigneeSimple Approach Systems, Inc.

InventorAmirali G. Rehmat

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Abstract

A port assembly for controlling the delivery of gases into the horizontal rotating reactor such as kiln gasifier is disclosed for introducing reactant gases. The port assembly comprises a cylindrical conduit is divided into noncommunicating four or more sections extending through the entire length of the kiln and supported by the stationary end plates of the rotating kiln gasifier. Each section of the conduit communicates with external supply of the reactant gases and each supply of reactant gases is independently controlled in terms of the composition and quantity. Each section of the port assembly communicates with the interior of the kiln gasifier through the plurality of nozzles are confined in the lower part of the conduit. The number and the size of the nozzles in individual section of the conduit is based on the desired flow of gases and available pressure for the supply of the reactant gases.

Claims11

Dependent claims

An apparatus for reacting solid reactants with gaseous reactants, comprising:

(a) a rotating refractory lined kiln having an inlet at a front end, an outlet for fuel gas at a back end, and an ash outlet:
(b) a main gas distributor within the kiln between the front end and the back end, wherein the distributor is divided to a drying section, a devolatization section, a combustion section, and a gasification section, wherein gas is supplied independently to the drying section by a first gas supply conduit having a first plurality of nozzles, to the devolatization section by a second gas supply conduit having a second plurality of nozzles, a combustion section by a third gas supply conduit having a third plurality of nozzles, and a gasification section by a fourth gas supply conduit by fourth plurality of nozzles;
(c) an introduction inlet for introducing carbonaceous solid reactants at the front end;
(d) a withdrawal outlet to withdraw processed solids located at the bottom of the back end;
and
(e) a source of the gas, wherein the gas includes oxygen,
wherein the gas distributor traverses through the horizontal length of the kiln, and the ends allow free rotation of the kiln.

4 more elements

An apparatus for reacting solid reactants with gaseous reactants, comprising:

(a) a main horizontal gasifier along the length of a rotating refractory kiln with sealed stationary caps at a front end and the back end, wherein the kiln has a drying section, a devolatization section, a combustion section, and a gasification section, wherein the drying section is at a temperature of between about 500° F. to about 1000° F., the devolatization section is at a temperature between about 1000 and 1900° F., the combustion section is a temperature between about 1900° F. and 2200° F., and a gasification section at a temperature between about 2000° F. and 2000° F., wherein the combustion section, the gasification section, and the combustion sections are arranged horizontally along the entire length of the kiln;
(b) an introduction inlet for introducing solid reactants at the front end to drying section,
(c) a withdrawal outlet to withdraw processed solids and solid residues from the gasification section,
(d) a gas distributor within the kiln suppling the gas to the devolatization section, the combustion section, the gasification section, and the combustion sections, wherein the gas distributor distributes with at least four independent conduits;
wherein the conduits are each connected to a plurality of nozzles, the gas distributor traverses through the horizontal length of the kiln.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/747,277Filed 22 Jan 2013 · continuation
Priority: IN 1157/CHE/200812 May 2008
Published: US 2014/0202079 A124 Jul 2014
Granted: 9 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

C10J 3/005
Production of combustible gases containing carbon monoxide from solid carbonaceous fuels: rotary drum or kiln gasifiers
F27B 7/30
Details, accessories or equipment specially adapted for rotary-drum furnaces: arrangements of partitions
C10J 2200/152
Details of feeding means: nozzles or lances for introducing gas, liquids or suspensions
C10J 2300/092
Biomass: wood, cellulose

Family

Application12/463,848Parent of this continuation · filed 11 May 2009
US 2014/0202079 A1Pre-grant publication · published 24 Jul 2014
US 2017/0226435 A9Pre-grant publication · published 10 Aug 2017
US 2009/0277090 A1Published application
US 9,862,899 B2This patent

From the US filing history. Foreign family members aren’t listed.