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1. WO2022046042 - PROCESS COOLING WATER SYSTEM CONTROL SYSTEMS AND METHODS FOR IRON AND STEELMAKING APPLICATIONS

Publication Number WO/2022/046042
Publication Date 03.03.2022
International Application No. PCT/US2020/047877
International Filing Date 26.08.2020
IPC
C02F 5/10 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
5Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
10using organic substances
C02F 5/12 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
5Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
10using organic substances
12containing nitrogen
C02F 5/14 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
5Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
10using organic substances
14containing phosphorus
CPC
C02F 1/008
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
008Control or steering systems not provided for elsewhere in subclass C02F
C02F 2001/007
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
007Processes including a sedimentation step
C02F 2103/023
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2103Nature of the water, waste water, sewage or sludge to be treated
02Non-contaminated water, e.g. for industrial water supply
023Water in cooling circuits
C02F 2103/16
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2103Nature of the water, waste water, sewage or sludge to be treated
16from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
C02F 2209/005
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2209Controlling or monitoring parameters in water treatment
005Processes using a programmable logic controller [PLC]
C02F 2209/02
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2209Controlling or monitoring parameters in water treatment
02Temperature
Applicants
  • MIDREX TECHNOLOGIES, INC. [US]/[US]
Inventors
  • FINNOUCHE, Faycal
  • OSWALD, David
Agents
  • BERNARD, Christopher, L.
Priority Data
17/001,72025.08.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS COOLING WATER SYSTEM CONTROL SYSTEMS AND METHODS FOR IRON AND STEELMAKING APPLICATIONS
(FR) SYSTÈMES ET PROCÉDÉS DE COMMANDE DE SYSTÈME D'EAU DE REFROIDISSEMENT DE PROCESSUS POUR APPLICATIONS SIDÉRURGIQUES
Abstract
(EN) A process cooling water (PCW) system and method for an iron or steelmaking application, the PCW system and method including: sampling a plurality of characteristics of PCW using a plurality of sensors; calculating one or more of Langelier Saturation Index (LSI) and Ryznar Stability Index (RSI) based on the plurality of characteristics using a LSI/RSI measurement unit coupled to the plurality of sensors; and injecting one or more anti-sealant chemicals into the PCW responsive to the calculated one or more of the LSI and the RSI in real time using an anti-sealant injection system to thereby control scale formation in the PCW.
(FR) L'invention concerne un système et un procédé d'eau de refroidissement de procédé (ERP) pour une application de fabrication de fer ou d'acier, le système et le procédé ERP comprenant les étapes suivantes : l'échantillonnage d'une pluralité de caractéristiques d'ERP à l'aide d'une pluralité de capteurs ; le calcul d'un ou plusieurs indices parmi l'indice de saturation de Langelier (LSI) et l'indice de stabilité de Ryznar (RSI) sur la base de la pluralité de caractéristiques à l'aide d'une unité de mesure LSI/RSI couplée à la pluralité de capteurs ; et l'injection d'un ou plusieurs produits chimiques tartrifuges dans l'ERP en réponse auxdits un ou plusieurs indices calculés parmi le LSI et le RSI en temps réel à l'aide d'un système d'injection tartrifuge pour réguler ainsi la formation de tartre dans l'ERP.
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