公开(公告)号：WO0223110A3

公开(公告)日：2002-07-04

申请号：PCT/US0128580

申请日：2001-09-12

Applicant: CADENCE ENVIRONMENTAL ENERGY ,  ASH GROVE CEMENT CO ,  HANSEN ERIC R ,  SUPELAK RALPH A ,  TUTT JAMES RONALD ,  WAY PETER F

Inventor： HANSEN ERIC R ,  SUPELAK RALPH A ,  TUTT JAMES RONALD ,  WAY PETER F

IPC: C04B2/10 ,  C04B7/44 ,  C04B7/60 ,  F27B7/34 ,  F27B7/36 ,  F27D7/04 ,  C04B7/36 ,  F27B7/20 ,  F27D7/02

CPC classification number: F27B7/00 ,  F27B7/10 ,  F27B7/2016 ,  F27B7/2033 ,  F27B7/34 ,  F27B7/36 ,  F27B2007/367 ,  F27D7/04

Abstract: A method is described for reducing NOx emissions and improving energy efficiency during mineral processing in a rotary kiln (12). The method comprises injection of air (32) with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel or in a preheater/pecalciner vessel.

Abstract translation: 描述了一种用于在回转窑（12）中的矿物加工期间减少NOx排放并提高能量效率的方法。 该方法包括将高速/高动能的空气（32）注入窑内以减少或消除窑气分层。 该方法可以应用于在回转窑容器或预热器/分解器容器中混合气体。

公开(公告)号：WO9402792A3

公开(公告)日：1994-03-17

申请号：PCT/US9306491

申请日：1993-07-09

Applicant: ASH GROVE CEMENT CO ,  CADENCE ENVIRONMENTAL ENERGY

Inventor： HANSEN ERIC R ,  TUTT JAMES R

IPC: C04B7/44 ,  F27B7/20 ,  F27B7/36 ,  F27D17/00 ,  F27B5/16 ,  C04B2/10 ,  C04B7/38 ,  C04B7/45 ,  C04B7/60 ,  C04B11/036

CPC classification number: F27D17/001 ,  C04B7/44 ,  F27B7/2016 ,  F27B7/36 ,  F27B2007/367 ,  Y02P40/121 ,  Y02P40/126 ,  C04B7/43 ,  C04B7/4423 ,  C04B7/60

Abstract: The present invention is directed to a method and apparatus for controlling the kiln gas stream (90, 138) in a conventional long wet or dry process cement kiln (10). A portion of the kiln gas stream (90) can be withdrawn from the rotary kiln vessel (17) at a point upstream, relative to kiln gas flow of the chain system in the mineral drying zone (24). Alternatively, or in conjuction with bypass formation, the apparatus (256) can be used to add tertiary air to the kiln gas stream (90) to promote combustion efficiency downstream of the clinkering zone (28). Use of the present apparatus (56, 156) to form a kiln gas bypass stream (64) enhances operating efficiencies of long kilns by reducing dust loss, by facilitating isolation of high alkali by-product streams, by reducing alkali content of collected kiln dust, by increasing energy efficiency of long kiln operation, and by allowing greater overall control in the cement manufacturing process.

公开(公告)号：WO2007082198A3

公开(公告)日：2008-01-17

申请号：PCT/US2007060264

申请日：2007-01-09

Applicant: CADENCE ENVIRONMENTAL ENERGY ,  ASH GROVE CEMENT CO ,  HANSEN ERIC R ,  TUTT JAMES R ,  SUPELAK RALPH A ,  DERKSEN KENNETH J ,  BLANKENSHIP KEVIN ,  PARKER WALTER

Inventor： HANSEN ERIC R ,  TUTT JAMES R ,  SUPELAK RALPH A ,  DERKSEN KENNETH J ,  BLANKENSHIP KEVIN ,  PARKER WALTER

IPC: B01D53/56

CPC classification number: F27B7/362 ,  B01D53/56 ,  C04B7/364 ,  F27B7/42 ,  F27D19/00 ,  F27D21/00 ,  Y02C20/10

Abstract: A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implementation of SNCR is also disclosed.

Abstract translation: 操作矿物加工窑的方法包括将一定量的选择性非催化还原（SNCR）还原剂引入窑中。 SNCR还原剂可以是固体，液体或气体。 还公开了为实施SNCR而修改的矿物加工窑。