公开(公告)号：US20150275427A1

公开(公告)日：2015-10-01

申请号：US14428884

申请日：2013-09-18

Applicant: VALMET TECHNOLOGIES OY

Inventor： Piia Niemi ,  Markku Isoniemi ,  Tero Juutilainen ,  Kari Haaga

IPC: D21C11/12 ,  F23J15/06 ,  F22G1/02

CPC classification number: D21C11/12 ,  F22B1/20 ,  F22B21/343 ,  F22G1/02 ,  F23J15/06

Abstract: An arrangement and a method in a soda recovery boiler, in a furnace (1) of which recovery boiler there are arranged screen tubes (7) and which recovery boiler comprises a second pass (9) in which is arranged at least one superheater (4′). The second pass (9) is arranged for being cooled with cooling medium coming from the screen tubes (7).

Abstract translation: 一种在苏打水回收锅炉中的装置和方法，在炉子（1）中，回收锅炉设置有筛管（7），并且该回收锅炉包括第二通道（9），其中布置有至少一个过热器 '）。 第二通道（9）布置成用来自筛管（7）的冷却介质冷却。

公开(公告)号：US12195917B2

公开(公告)日：2025-01-14

申请号：US17925478

申请日：2021-05-24

Applicant: Valmet Technologies Oy

Inventor： Naveen Chenna ,  Tero Juutilainen

IPC: D21C11/08 ,  B01D53/58 ,  D21C11/06

Abstract: A method for removing ammonia (NH3) from a gas produced in a pulp mill (100). The method comprises producing raw non-condensable gas comprising ammonia (NH3) in the pulp mill (100) and transferring at least some of the raw non-condensable gas to a scrubber (200) containing aqueous scrubbing solution (130, 140). The method comprises adding a compound capable of decreasing a pH of the scrubbing solution to the scmbbing solution (130, 140) and in the scrubber (200), contacting the raw non-condensable gas with the scmbbing solution (130, 140), to react the ammonia (NH3) of the raw non-condensable gas with the scmbbing solution to produce clean non-condensable gas and ammonium (NH4+). A pulp mill comprising equipment for performing the method.

公开(公告)号：US09920476B2

公开(公告)日：2018-03-20

申请号：US14428884

申请日：2013-09-18

Applicant: Valmet Technologies Oy

Inventor： Piia Niemi ,  Markku Isoniemi ,  Tero Juutilainen ,  Kari Haaga

IPC: F23J15/06 ,  D21C11/12 ,  F22B21/34 ,  F22G1/02 ,  F22B1/20

CPC classification number: D21C11/12 ,  F22B1/20 ,  F22B21/343 ,  F22G1/02 ,  F23J15/06

Abstract: An arrangement and a method in a soda recovery boiler, in a furnace (1) of which recovery boiler there are arranged screen tubes (7) and which recovery boiler comprises a second pass (9) in which is arranged at least one superheater (4′). The second pass (9) is arranged for being cooled with cooling medium coming from the screen tubes (7).