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1. (WO2018049495) METHOD FOR TREATING AND RECOVERING PRIMARY SLUDGE CONTAMINATED WITH MINERAL FILLERS GENERATED IN THE CELLULOSE AND PAPER INDUSTRY, AND THE PRODUCT THUS OBTAINED
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Pub. No.: WO/2018/049495 International Application No.: PCT/BR2017/050122
Publication Date: 22.03.2018 International Filing Date: 19.05.2017
IPC:
C02F 11/14 (2006.01) ,C02F 103/28 (2006.01)
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11
Treatment of sludge; Devices therefor
12
by de-watering, drying, or thickening
14
with addition of chemical agents
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
103
Nature of the water, waste water, sewage or sludge to be treated
26
from the processing of plants or parts thereof
28
from the paper or cellulose industry
Applicants: AMBITEC S/A[BR/BR]; Av Paulista 2421 - 10º Andar Cj 101 - Bela Vista 01311-300 São Paulo, BR
Inventors: DA SILVA, Márcio Nunes; BR
Agent: BEERRE ASSESSORIA EMPRESARIAL LTDA; Av Barão de Itapura, 3236 Taquaral 13073-300 Campinas, BR
Priority Data:
BR 102016021339-815.09.2016BR
Title (EN) METHOD FOR TREATING AND RECOVERING PRIMARY SLUDGE CONTAMINATED WITH MINERAL FILLERS GENERATED IN THE CELLULOSE AND PAPER INDUSTRY, AND THE PRODUCT THUS OBTAINED
(FR) PROCÉDÉ DE TRAITEMENT ET DE RÉCUPÉRATION DE BOUES PRIMAIRES CONTAMINÉES PAR DES CHARGES MINÉRALES ET PROVENANT DE L'INDUSTRIE DE LA CELLULOSE ET DU PAPIER, ET PRODUIT AINSI OBTENU
(PT) PROCESSO DE TRATAMENTO E RECUPERAÇÃO DE LODO PRIMÁRIO CONTAMINADO COM CARGAS MINERAIS GERADO NA INDÚSTRIA DE CELULOSE E PAPEL E PRODUTO ASSIM OBTIDO
Abstract:
(EN) The present invention patent concerns a method for treating and recovering primary sludge contaminated with mineral fillers generated in the paper and cellulose industry, and the product thus obtained, belonging to the chemical sector. More specifically, the invention concerns a method for treating and recovering primary sludge, obtaining unbleached and pre-bleached clean cellulose for use in the manufacture of paper in general. The present invention discloses a method that involves the separation of the mineral fillers and the organic contaminants contained in the fibres by means of a simultaneous physical-chemical and mechanical process that purifies the primary sludge into clean cellulose. The method for treating and recovering contaminated primary sludge includes the following steps: 1.1 Feed for cellulose-purification process, 1.2 Dilution and washing of contaminated primary sludge (physical-chemical process), 1.3 Separation of inorganic contaminants, i.e. mineral fillers and soluble organic fillers (physical-mechanical process), 1.4 Separation of cellulose and densification of pulp, 1.5 Pre-bleaching of fibres, 1.6 Dewatering and concentration of fibres for application and reuse, and 1.7 Treatment of waste water.
(FR) Le présent brevet d'invention concerne un procédé de traitement et de récupération de boues primaires contaminées par des charges minérales et provenant de l'industrie de la cellulose et du papier, et le produit ainsi obtenu, relevant du secteur chimique, et notamment un procédé de traitement et de récupération de boues primaires, permettant d'obtenir une cellulose propre non blanchie ni pré-blanchie en vue d'une utilisation dans la fabrication de papiers en général. La présente invention décrit un procédé consistant à séparer les charges minérales et les contaminants organiques contenus dans les fibres, au moyen d'un processus simultanément physico-chimique et physico-mécanique permettant de purifier les boues primaires en cellulose propre. Le procédé de traitement et de récupération de boues primaires contaminées comprend les étapes suivantes : 1.1- Alimentation du procédé de purification de cellulose ; 1.2.- Dilution et lavage des boues primaires contaminées (processus physico-chimique) ; 1.3.- Séparation des contaminants inorganiques, soit les charges minérales et organiques solubles (processus physico-mécanique) ; 1.4.- Séparation de la cellulose et densification de la pulpe ; 1.5.- Pré-blanchiment des fibres ; 1.6.- Dessiccation et concentration des fibres pour application et réutilisation ; et 1.7.- Traitement de l'eau rejetée.
(PT) Trata-se a presente patente de invenção de um processo de tratamento e recuperação de lodo primário contaminado com cargas minerais gerado na indústria de celulose e papel e produto assim obtido, pertencente ao setor químico, particularmente trata-se de um processo de tratamento e recuperação de lodo primário, obtendo celulose limpa não branqueada e pré branqueadas para aplicação na fabricação de papéis em geral. A presente invenção apresenta um processo que se dá pela separação das cargas minerais e os contaminantes orgânicos contidos nas fibras, através de um processo físico-químico e mecânico simultâneos que proporcionam a purificação do lodo primário em celulose limpa. O processo de tratamento e recuperação de lodo primário contaminado compreende as seguintes etapas: 1.1.- Abastecimento do processo de purificação da celulose; 1.2.- Diluição e lavagem do lodo primário contaminado (processo físico- químico); 1.3.- Separação dos contaminantes inorgânicos, ou seja, cargas minerais e orgânicas solúveis (processo físico-mecânico); 1.4.- Separação da celulose e adensamento da polpa; 1.5.- Pré branqueamento das fibras; 1.6.- Desague e concentração das fibras para aplicação e reuso; e 1.7.- Tratamento da água de descarte.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Portuguese (PT)
Filing Language: Portuguese (PT)