公开(公告)号：US20030215379A1

公开(公告)日：2003-11-20

申请号：US10394596

申请日：2003-03-21

Applicant: Environmental Projects, Inc.

Inventor： Dale Lee Denham JR. ,  Rudolph Pruszko ,  Wayne C. Hazen

IPC: C01D007/00 ,  B01J008/04

CPC classification number: C01D7/00 ,  C01D7/35

Abstract: Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have-reduced emissions of pollutants compared to conventional processes.

Abstract translation: 公开了一种使用低温加热和间接加热煅烧材料的装置。 还公开了与常规方法相比具有减少的污染物排放的材料的各种煅烧方法。

公开(公告)号：US20030091486A1

公开(公告)日：2003-05-15

申请号：US10263335

申请日：2002-10-01

Applicant: Environmental Projects, Inc.

Inventor： Dale Lee Denham JR. ,  Rudolph Pruszko ,  Wayne C. Hazen

IPC: C01D007/14 ,  B01J008/08 ,  F27B015/14

CPC classification number: C01D7/00 ,  C01D7/35

Abstract: Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have reduced emissions of pollutants compared to conventional processes.

Abstract translation: 公开了一种使用低温加热和间接加热煅烧材料的装置。 还公开了与常规方法相比具有减少的污染物排放的材料的各种煅烧方法。

公开(公告)号：US20030084547A1

公开(公告)日：2003-05-08

申请号：US09910333

申请日：2001-07-20

Applicant: Environmental Projects, Inc.

Inventor： Wayne C. Hazen ,  Dale Lee Denham JR. ,  Rudolph Pruszko ,  David R. Baughman

IPC: C01D007/00

CPC classification number: C01D7/24 ,  C01D7/35

Abstract: The present invention provides a process for producing sodium carbonate monohydrate crystals by introduction of anhydrous sodium carbonate into a saturated sodium carbonate brine solution under conditions in which sodium carbonate monohydrate formation is favored. As the anhydrous sodium carbonate dissolves, the brine becomes supersaturated resulting in relief of supersaturation by formation of sodium carbonate monohydrate crystals. The process includes controlling supersaturation and its relief to achieve growth of existing sodium carbonate monohydrate crystals rather than nucleation and formation of new sodium carbonate monohydrate crystals. The resulting crystals are separated from insoluble impurities on a size separation basis.

Abstract translation: 本发明提供了一种在碳酸钠一水合物形成有利的条件下，通过将无水碳酸钠引入饱和碳酸钠盐水溶液中制备碳酸钠一水合物晶体的方法。 当无水碳酸钠溶解时，盐水变得过饱和，从而通过形成碳酸钠一水合物晶体缓解过饱和。 该方法包括控制过饱和度及其缓解以实现现有碳酸钠一水合物晶体的生长，而不是成核并形成新的碳酸钠一水合物晶体。 将得到的晶体以不同的杂质以尺寸分离的形式分离。