FI86206C - Procedure and additive to prevent clogging of a treatment process - Google Patents

Description

1 86206

METHOD AND ADDITIVE TO PREVENT CONSTRUCTION OF THE TREATMENT PROCESS - FÖRFARANDE OCH TILLÄGGSÄMNE FÖR ATT HINDRA TILLTÄPPNING AV EN BEHANDLINGSPROCESS

The present invention relates mainly to a method for preventing clogging of a process in the treatment of dry pulp or the like, e.g. during grinding, e.g. in the case of slurrying cellulose into a pulp or other further processing. The invention further relates to an additive for use mainly in connection with a dry pulp or similar treatment process, e.g. grinding, in order to prevent clogging of the process.

Dry cellulose has to be ground when the pulp is slurried in water to make a paper. The cellulose is then usually in the form of sheets, and the sheets are torn or ground, e.g. with a hammer mill. During sheet shredding and milling, cellulose particles tend to clog the process; the cellulose particles formed, i.e. the dry and airy fibers and the fiber bundles, have poor transport properties. In addition, the fibers and fiber bundles tend to adhere to process equipment, e.g., a hammer mill and its hopper walls.

It is an object of the present invention to obviate the above drawback. In particular, it is an object of the invention to provide a new method and additive mainly for preventing clogging of a dry pulp treatment process, e.g. grinding.

For aspects of the invention, reference is made to the claims.

: "The invention is based on the fact found in studies that the migration properties of dry and airy pre-fibers and fiber bundles or the like can be substantially improved by adding an antistatic agent to the process, i.e. e.g. to cellulose sheets, fibers or fiber bundles.

An antistatic agent can be added e.g.

2 86206 by spraying ao into the substance to be treated, such as cellulose sheets, fibers, fiber bundles, and / or ao process equipment, such as a refiner and / or other process equipment associated with the refiner, such as a hopper, etc.

The antistatic agent is liquid or gaseous, and preferably contains, in addition to the antistatic chemical, e.g. water as a carrier; the proportion of antistatic chemical is e.g. 1-20%, suitably 4-16%.

The antistatic agent may further contain e.g. ethanol (optionally denatured) or some other alcohol, e.g. 2 to 40%, preferably 5 to 30%. Further, the antistatic agent may contain e.g. glycol such as propylene glycol e.g. 1-10% such as 3-7%.

The antistatic agent may be anionic, cationic or non-ionic. Examples are: polyamines, quaternary nitrogen compounds, alkyldi-: methylbenzylammonium halides, e.g. chlorides.

All% values are expressed as percentages by weight.

Thanks to and with the aid of the invention, the blockage of the pulp milling process, mainly in connection with the milling of dry cellulose, has been prevented very effectively. The antistatic additive apparently removes static electricity from the dry cellulose particles, which is apparently the main cause of blockages. Additives such as ethanol and glycol improve the handling and / or anti-clogging properties of the additive.

The invention is described in detail below by means of exemplary embodiments, limiting the invention to the embodiment shown and / or to said antistatic agents.

Example 1

In one pulp mill, the hopper 35 of the hammer mill tended to clog from time to time due to dry cellulose particles. An antistatic agent containing 5- 3 86206 8% polyamine condensate and 10% ethanol, the rest of the water, was injected into the process, mainly the funnel. Due to the effect of the antistatic agent, the process was no longer clogged.

Example 2 5 Commercially available antistatic agents:

Alkaril Chemicals Inc GAF: Alkamuls SML (sorbitan monolaurate), Alkaphos B6-56A (phosphate ester), Alkaphos L3-64A (phosphate ester), Alkaquat C

(quaternary imidazole), Alkaquat DAET (quaternary fatty acid), Alkaquat DAPT (quaternary fatty acid), Alkaquat DMB-ST (stearyldimethylbenzylammonium chloride), Alkaquat O (quaternary dioleic imidazole), Alkaquat

Mazer Chemicals, Inc .: Alubrasoft SJ-Wax (poly-15 amide), Alubrasol APL-5, Alubrasol FE (cationic polyamide salt blend), Alubrasol NSL, Alubrasol OS, Alubrasol WL-100, Alubraspin HS-100 (fatty alcohol alkoxylate) ), Alubraspin HS 100 (fatty alcohol alkoxylate), Alubra-spin NF-8A Conc., Alubraspin PF, Alubraspin PNA, Alubra-20 spin 100-PM;

Hart Products Corp .: Antistat H (Quaternary Nitrogen Compound)?

Laurel Products Corporation: Antistat 680 (Quaternary Ammonium Compound); Hexcel Corp .: Antistatic Agent 273-E (bis-2-hydroxyethylstearylamine), Antistatic Agent 273-c (bis-2-hydroxyethylcocamine);

Akzo, Chemical Div .: Armostat 100V (quaternary ammonium salts), Armostat 310, 410 (tertiary ethoxylated amine), Armostat 375, 450, 475 (tertiary ethoxylated amine), Armostat 550 (tertiary ethoxylated amine);

Lyndal: Aston 01 (imidazoline);

North Chemical: Aston 123 (polyamine); 35 ICI Americas Inc .: Atmer 122, 125 (monoglyceride), Atmer 129 (monoglyceride), Atmer 163 (monoglycerides); 4 862C6 E.I. Du Pont De Nemours & Co .: Avitex DN (quaternized hydrocarbon), Avitex E (quaternary ammonium salt), Avitex NA (higher alkylamine compound), Avitex R (higher alkylamine compound); 5 Capital City Products Co .: Capstat (quaternary alkylammonium methyl sulfate);

Union Carbide Corp.: Carbowax® PEG Series (polyethylene glycol),;

Sandoz Chemicals Corp .: Ceranine HCA Granules 10 (amide complex);

Vn DYk / Mallinckrodt Inc .: Ceraphyl 60 (gluconamidopropyl-dimethyl-2-hydroxyethylammonium chloride);

Chemax Inc .: Chemstat 122 / 60DC, 182 / 67DC

15 (bis (2-hydroxyethyl) alkylamine), Chemstat 122, 172 (bis (2-hydroxyethyl) alkylamine), Chemstat 182 '(bis (2-hydroxyethyl) alkylamine), Chemstat 192 (bis (2-hydroxyethyl) alkylamine);

Finetex Inc .: Cordex DJ (amine derivative); 20 The C.P. Hall Co .: CPH-376N (polyoxyethylene laurate)?

American Cyanamid Co.: Cyastat® LS ((3-Lauramidopropyl) trimethylammonium methyl sulfate), Cyastat® SN (stearamidopropyldimethyl-5-hydroxyethyl-25-ammonium dihydrogen nitrate), Cyastat R SP (stearamidopropyldimethyl-3-thiomethyl) Antitstatic Agent (NN-bis (2-hydroxyethyl) -N- (31-dodecyloxy-2-hydroxypropyl) methylammonium methosulfate); 30 Henkel Corp .: Dacospin HS (arylphenol), • Dacospin PE-146 (phosphated aliphatic alcohol),

Dacospin 092 (quaternary imidazole sulfate), Dehyquart E (hydroxyhexadecyldimethylhydroxyethylammonium chloride); 35 Eastern Color & Chemical Co .: Eccostat;

Wiltco Corp .: EmcolR CC-9 (polypropoxy-quaternary ammonium chloride), EmcolR CC-55 (polypropoxy-

II

5,862G6 quaternary ammonium acetate), Emphos® PS-220, PS-236, PS-400 (organic phosphate esters);

Akzo, Chemical Div .: Ethoquad C12, C25, R1315 (quaternary ammonium salts); 5 American Hoechst Corp .: Genamin KDM-F (alkyltrimethylammonium chloride);

The C.P. Hall Co .: Hallco Antistat C-1047 (laurate ester), HallcoR C-7065 (polyoxyethylene laurate); 10 Croda Inc .: Incromectant AQ (acetamidopropyltrimonium chloride), Incrosoft S-75 (imidazolinium methosulfate), Incrosoft S-90 (imidazolinium methosulfate), Incrosoft S-90M (imidazolinium methosulfate), Incrosoft T-75 (imidazolinium names) 15 T-90 (imidazolinium methosulphate), ·

Crompton & Knowales Corp .: IntrasoftR OCN

(cationic fatty acid condensation);

Akzo, Chemical Div. Ketjenblack E.C. (soot);

Laporte Inc. LaponiteB XLS (synthetic sodium magnesium silicate);

Mazer Chemicals Inc .: Larostat 88 (soybean dimethylethylammonium ethosulfate), Larostat 143 (oleyldimethylethylammonium ethosulfate), Larostat 264A, 264 (soybean dimethylethylammonium ethosulfate), Larostat 264-A Anhydrous (soybean dimethylethyl), 'teri), Larostat 300A (alkyl phosphate ester), Larostat 310 (neutralized phosphate ester), Larostat 377 DPG (alkyl dimethylethylammonium ethosulfate), Larostat 30 451 (stearyldimethylethylammonium ethosulfate);

Lipo Chemicals Inc .: Lipoquat C 25 (quaternized alkylamine ethoxylate), Lipoquat R (quaternized ricinoleic acid);

Mazer Chemicals Inc .: MaphosB 66H (phosphate road ester), Maphos * 76 NA (salt / phosphate acid ester), MazeenR C-2, C-5, C-15 (polyoxyethylene cocoamine),

MazeenR S-2, S-5 (polyoxyethylene isoamine), MazeenR

6 86206 Τ-2, Τ-5, Τ-15 (fatty amines), Mazol ”GMO K (glycerolimonooleate), MazolineR OA (fatty imidazole), Mazon JMR-1? M. Michel & Co, Inc .: Michel XO-24 (amine), Michel XO-85 (amine), Michel XO-108 (amine); Miranol Inc .: Miranol Ester PO-LM4 (oligomeric polyester), Miranol1 * DM, DM Conc. 45% (monocarboxylic stearin derivative, sodium salt), Mirapol® A-15 (polyquaternary ammonium chloride), Mirapol® AD-1 (polyquaternary ammonium chloride), Mirapol® 9 (polycationic copolymer), Mirapol® copolymer, Mirapol® 95 (copolymer) 175 (polycationic copolymer);

Mona Industries Inc. Monafax 785, 786 (phosphate ester), Monastat 1195; 15 Lyndal Inc .: Phosfac 1001 (organic phosphate

: tiester), Phosfac 1044 FA, 1044, 1006, 1066, 1066FA

'(organic phosphate ester);

Henkel Canada Ltd. Polyquart H (polyamine);

Akzo Chemicals Div. : RD-5078; 20 Sandoz Chemicals Corp .: Sandin EU (sulfonated hydrocarbon), Sandin VU (sulfonated hydrocarbon), Sandotex A (amine);

Mazer Chemicals Inc .: S MazR 20 (sorbitan monolaurate); 25 ACL Inc .: Staticide1 *;

Hexcel Corp .: Sumquat® 5106 / Antistatic (bis (2-hydroxyethyl) octyl methylammonium paratolulenesulfonate), Agent 106G-90%;

Tomah Products: Tomah Q-14-2 (quaternary: 30 amine), Tomah Q-18-2-50% (quaternary amine);

Union Carbide Corp .: Union Carbide1 * Y 9567, Y 9794 (organosilicone compound);

Sherex Chemical Co. Inc .: Varstat K22, T22 (bis-hydroxyethylalkylamine), Varstat 10 (ethoxylated alcohol), Varstat 66 (ethyl bis- (polyhydroxyethyl) alkylammonium methyl sulfates)?

NO. Du Pont De Nemours & Co .: Zelec NE, NK

7 86206 (alcohol phosphates), Zelec TY (alcohol phosphates);

Taiwan Surfactant Corp .: Ablumine 230 (N-alkyldimethylammonium chloride), Albumine 280 (stearyldimethylbenzylammonium chloride), Abluphat LP (sodium salt of phosphate-5 thiester), Abluphat LPF, LP1, LPX (phosphate ester free acid);

Cyanamid B.V .: Aerosol C 61 (alkylamine guanidipolyoxyethanol);

Toho Chemical Industry Co. Ltd .: Anstex AK-2 5 10 (phosphate); ICI: Atmer 122, 123, 126, 128, 129 (glycerol ester), Atmer 151 (alkoxylated alcohol), Atmer 154 (alkoxylated fatty acid ester), Atmer 160 (quaternized amine ethoxylate), Atmer 163 (alkoxylated fatty amine) , Atmer 172, Atmer 190 (alkyl sulfonate);

Stepan Europe: Catigene® CT 30/70 (alkylmethylammonium methoxysulfate), Catigene® LT 45 (alkylmethylammonium methoxysulfate), Catigene® ST 30/70 20 (alkyltrimethylammonium methoxysulfate);

Sanyo Chemical Industries Ltd .: Chemistat 3500, 6120, 6300, 6300H (quaternary ammonium polymer);

Croda Surfactants Ltd. Cithrol A (polyglycol oleate); /: 25 Pulcra Sa: Crafol AP-12 (oleate-5-phosphate), Crafol AP-31, AP-33, AP-34 (Potassium salt of phosphate ester), Crafol AP-36 (DEA salt of phosphate ester), Crapol AU-31 (quaternary dialkylimidazole);

Croda Surfactants Ltd .: Crillet (POE sorbita-30 niesters), Crodafos (alkyl ether phosphates), Crodamet (POE amines), Crodure *: (POE hydrogenated oil) ,; 'Henkel KGaA: Dehyquart LT (lauryltrimethyl- / *: ammonium chloride); 35 Kao Corp. Elec AC, EA, QN, RC, TS-2, TS-3. TS- 5. TS-6, Elec-2 (ethoxylated fatty amine), Electmaster ···· "HE-110, 210, Electmaster S-520, LL-10, PP-220, 320; e 86206

Takemoto Oil & Fat Co. Ltd .: Elecut S-117;

Witco SA: Emcol CC 55, CC 57 (polypropoxylated quaternary ammonium phosphate);

Yoshimura Oil Chemical Co Ltd .: Ereak PS-909 5 (alkylamide propyl dimethyl β-hydroxyethyl ammonium nitrate);

Akzo Chemicals BV: Ethoquad C / 12, 0/12 (ethoxylated quaternary ammonium compound);

Pulcra SA: Etilenox KM Series (polyoxyethylene alkylamine);

Henkel-NOPCO S.A .: Kerensim L ίο P (alkyl polyethoxy esters and ethers); BASF AG: Kerostat R 5009 (salts of aminocarboxylic acids); 15 Harcros Chemicals UK Limited: Lankrostat Se-: · 'Ries; "Lion Corp .: Lipomin LA (alanine derivatives); ICI Ltd .: Lubrol 17 A-17 (fatty alcohol ethoxylate condylate condensate)? Henkel-NOPCO S.A .: Lutostat MSW 30, MSW 88 (alkylamine);

Pulcra SA: Niox KQ-20, KQ-22, KQ-52, KQ-53, KQ-54 (ethoxylated fatty oxoalcohol), Niox KQ-55, KQ-56, KQ-70, KQ-80, KQ-81 (ethoxylated rasvaoksoalkoholi);

25 Nippon Oil & Fats Co. LTD .: Nissan Cation SA

(octadecylamine acetate), Nissan Elegan S-100, Nissan New Elegan A, ASK, Nisson Elegan S-100?

Pulcra SA: Noiox AK-43, AK-45 (polyethylene fatty acid ester); 30 Ceca SA: Noxamium S2 / 50 (ammonium quaternary derivatives of ethoxylated amines);

Henkel KGaA. Polyquart H 81 (polyglycol-polyamine condensate resin)?

Aquatec Quimica S / A: Proplast 058 (glycerol ester);

Hefti Ltd. Chemical Products: PGE-600 (polyethylene glycol), PGE-1000 (polyethylene glycol), PGE-1500 9 862G6 (polyethylene glycol);

Harcros Chemicals UK Limited: Quadrilan AT

(quaternary ammonium salt);

Synfina-Oleofina S.A .: Radiamine 6140 (primary amine), Radiaquat (dialkyldimethyl-quaternary ammonium chlorides), Radiasurf (esters of fatty acids and polyalcohols and ethoxylated sorbitol esters);

Rewo Chemische Werke GmbH: Rewoquat CPEM (N-me-10 style N- (pentathoxy) -N-whole ammonium methosulfate);

Sanyo Chemical Industries Ltd .: Sanstat 2012- A;

Servo Chemische Fabriek: Serdox NSG 400 (stearyl polyglycerol ester), Servamine KAC 412 (N-gluco-15 N, N, N-trimethylammonium chloride), Servoxyl VPI 55 (phosphate ester)? ·; - / Kao Corporation S.A .: Soluol OM (quaternary // ammonium salt); . ·· *. Zschimmer & Schwarz: Sulfostat KNT (amidoalkylamine acetate); ICI PLC: Synprolam 35 DMBQC (C 13 -C 18 alkyldimethylbenzylammonium chloride), Synprolam 35 MX 1, 35 MX 3, 35 MX 5 (C 1 -C 13 alkylmethyl polyethoxylated amines), Synprolam 35 MX 10, 35 MX 15 ( C 1-3 C 1-6 alkylmethyl polyethoxylated amines), Synprolam ::: 35 MX 1QC (C 13 -C 18 alkyldimethylhydroxyethylammonium chloride), Synprolam 35 N 3 X 3, 35 N 3 X 5, 35 N 3 X 10 (C 13 -C 10 alkyl polyethoxylated) propanedoxylated; Synprolam 35 N3X15 (Cx3-C1B-alkyl polyethoxylated: / -: propanediamine), Synprolam 35 TMQC (Cx3-CxB-alkyl-: ··; trimethylammonium chloride), Synprolam 35 TMQS (C3-C1B-alkyltrimethylammonium) , 35X10, 35X15 (Cx3-CxS-alkyl polyethoxylated amines), Synprolam 35X 15 QS, 35X 20QS, 35X 2QS, 35X 5QS, 35 35X 10QS (Cx3-C1B-alkyl polyethoxylated methylammonium methosulfate compounds);

Nippon Nyukazai So. Ltd .: Texnol IL (alkyl 10 86206 imidazoline laurate), Texnol SPT.

The working examples are intended only to illustrate the invention without limiting it in any way.

Il

Claims (7)

11 862C6 1. A method of preventing clogging of a process in connection with the treatment of dry pulp, characterized in that an antistatic agent is added to the treatment process by spraying onto the pulp particles. A method according to claim 1, characterized in that the antistatic agent 10 is fed to the walls of the hopper of the grinding device. Process according to Claim 1 or 2, characterized in that the antistatic agent is a liquid and contains 1 to 20% of water and an antistatic chemical, 2 to 40% of ethanol and the antistatic agent is cationic. Process according to one of Claims 1 to 3, characterized in that the antistatic agent contains 1 to 10% of glycol. 5. An additive for use in connection with a dry pulp or similar treatment process to prevent clogging of the process, characterized in that the additive is an antistatic agent. Additive according to Claim 5, characterized in that the additive contains water, 1 to 20% of the antistatic chemical and 2 to 40% of ethanol, and the antistatic agent is cationic. Additive according to Claim 6 or 7, characterized in that the additive contains 1 to 10% of glycol. 30 12 86206