Aqueous dispersion stabilizer of fine coal powder
    111.
    发明专利
    Aqueous dispersion stabilizer of fine coal powder 失效
    精细粉煤灰的均匀分散稳定剂

    公开(公告)号:JPS58223430A

    公开(公告)日:1983-12-26

    申请号:JP6491583

    申请日:1983-04-13

    Applicant: Kao Corp

    Abstract: PURPOSE: To improve dispersibility and to prevent production of hard cake, by using a stabilizer represented by a specified formula, and having a weight ratio of polyoxypropylene chain/polyoxyethylene chain in a specified range, and a specified mol.wt. range.
    CONSTITUTION: The present stabilizer is represented by the following formula: A[(C
    3 H
    6 O)y(C
    2 H
    4 O)
    z H]x, (where x≥2, y, z≥1 and x, y, z are each an integer, and A is the residue of an x-valent active hydrogen compd. freed of active hydrogen atoms), and it has 50/50W5/95wt. ratio of polyoxypropylene chain/polyoxyethylene chain, and 3,000W100,000mol.wt. Said active hydrogen compd. is an amino compd. or a hydroxy compd. having ≥3 active hydrogen atoms, such as ethylenediamine or glycerin. Said aq. dispersion stabilizer of fine coal powder has good dispersion performance, it does not form hard cake during storage for a long period, and good in redispersifying property.
    COPYRIGHT: (C)1983,JPO&Japio

    Abstract translation: 目的:为了提高分散性,防止硬饼的制造,通过使用由规定的配方表示的稳定剂,聚氧丙烯链/聚氧乙烯链的重量比在规定范围内,特定的摩尔重量。 范围。 构成:本稳定剂由下式表示:A [(C 3 H 6 O)y(C 2 H 4 O)z H] x,(其中x> = 2,y,z> = 1,x,y,z分别为整数, A是不含活性氢原子的x价活性氢化合物的残基,它具有50 / 50-5 / 95wt。 聚氧丙烯链/聚氧乙烯链的比例和3,000-100,000mol.wt。 所述活性氢化合物 是氨基酸 或羟基化合物 具有≥3个活性氢原子,例如乙二胺或甘油。 说aq 细煤粉分散稳定剂具有良好的分散性能,长期储存时不会形成硬饼,再分散性好。

    Preparation of stable aqueous coal slurry
    112.
    发明专利
    Preparation of stable aqueous coal slurry 失效
    稳定的水泥浆的制备

    公开(公告)号:JPS58214329A

    公开(公告)日:1983-12-13

    申请号:JP6491483

    申请日:1983-04-13

    Applicant: Kao Corp

    Abstract: PURPOSE: To stably disperse a coal fine powder and to prevent the formation of a precipitate or a hard cake even during longterm preservation, by a method wherein a polyether compound shown by specific formula is added to the aqueous dispersion of a coarse coal powder and the obtained compound is comminuted and mixed.
    CONSTITUTION: A polyether compound shown by formula A[(C
    3 H
    6 O)
    y (C
    2 H
    4 O)
    z ]
    x (wherein x is an integer of 2 or more, y and z are an integer of 1 or more, A is residue obtained through the removal of active hydrogen from an x valent active hydrogen compound. The wt. ratio of a polyoxypropylene chain and a polyoxyethylene chain is 50/50W5/95 and M.W. is 3,000W100,000) is added to the aqueous dispersion of a coarse coal powder to carry out crushing and mixing or added to and mixed in the aqueous dispersion prepared by communting said aqueous dispersion of the coarse coal powder. As the active hydrogen compound of the above mentioned polyether compound, for example, there is ethylenediamine or glycerine and the addition amount of the polyether compound is 0.01W 7.5wt% relative to the aqueous dispersion of the coal powder.
    COPYRIGHT: (C)1983,JPO&Japio

    Abstract translation: 目的:为了稳定地分散煤细粉,并且即使在长时间保存期间也防止形成沉淀物或硬质饼,通过将特定方式所示的聚醚化合物加入到粗粉煤灰的水分散液中, 将得到的化合物粉碎并混合。 构成:由式A [(C 3 H 6 O)y(C 2 H 4 O)z] x(其中x为2以上的整数)表示的聚醚化合物,y和z为1以上的整数,A为通过除去 将聚氧丙烯链和聚氧乙烯链的重量比为50 / 50-5 / 95,MW为3,000-100,000)加入粗煤粉的水分散体中以携带 粉碎和混合,或加入并混合在通过使粗煤粉末的所述水性分散体的通过而制备的水分散体中。 作为上述聚醚化合物的活性氢化合物,例如有乙二胺或甘油,相对于煤粉的水性分散体,聚醚化合物的添加量为0.01〜7.5重量%。

    IMPROVING AGENT FOR FILTRATION AND DEHYDRATION PROPERTIES OF WATER SLURRY OF METALLIC HYDROXIDE

    公开(公告)号:JPS5817816A

    公开(公告)日:1983-02-02

    申请号:JP11563381

    申请日:1981-07-23

    Applicant: KAO CORP

    Abstract: PURPOSE:To improve dehydration efficiency by using >=1 kinds among the plural anionic surfactants expressed by the formula in a filtration and dehydration stage for water slurry of metallic hydroxides. CONSTITUTION:A titled improving agent for filtration and dehydration properties consisting of 1 or >=2 kinds among plural kinds of surfactants expressed by the formula wherein R is 4-24C satd. or unsatd. aliphat. hydrocarbon groups of straight or branched chains, and M is Na, K, NH4 or alkanol amines. When said improving agent is added to water slurry of metallic hydroxides which are insoluble or hardly soluble in water, dehydration efficiency is improved.

    GRANULATING AGENT FOR AQUEOUS SLURRY OF COAL POWDER

    公开(公告)号:JPS56116793A

    公开(公告)日:1981-09-12

    申请号:JP2032780

    申请日:1980-02-20

    Applicant: KAO CORP

    Abstract: PURPOSE:To obtain a granulating agent for the aqueous slurry of coal powder which is capable of accelerating the granulation of coal powder in water and also of making the removal of ash and inorganics easier from a specific nonionic surfactant as the main component. CONSTITUTION:A granulating agent is obtained which is composed of a nonionic surfactant obtained from addition of 20-100mol of ethylene oxide to a C8-C22 (un)saturated alcohol or a phenol substituted by a C8-C12 alkyl or alkenyl group, represented by the formula (where R is an alkyl- or alkenyl-phenyl with a C8-C22 alkyl or alkenyl group or a C8-C12 alkyl or alkenyl group, n is 20-100). Then, 0.01-5.0wt% (based on coal) said granulating agent and 1-50wt% oil (e.g., fuel oil, gas oil, etc.) are added to an aqueous coal slurry containing 20-85wt% coal and stirred to granulate the coal powder.

    GRANULATING AGENT FOR COAL POWDERRWATER SLURRY

    公开(公告)号:JPS5667396A

    公开(公告)日:1981-06-06

    申请号:JP14477279

    申请日:1979-11-08

    Applicant: KAO CORP

    Abstract: PURPOSE:To obtain a granulating agent capable of accelerating the granulation of coal powder in water and also of making easier the removal of ash and inorganics from the sulfonate of polycyclic aromatic compound or its formalin condensation product. CONSTITUTION:The sulfonate, formalin condensation product (of condensation degree of 1.2-30), or alkali (alkaline earth) metal salt of a polycyclic aromatic compound which may have hydrocarbon groups as substituents, e.g., naphthalene, an alkylsubstituted naphthalene, anthracene, etc., is used as a granulating agent for coal powder-water slurry. A coal-water slurry containing 20-85wt% coal is mixed with 0.01-5.0wt% granulating agent and then granulated by the addition of 1- 50wt% (based on coal) fuel oil, e.g., heavy oil, light oil, etc., by means of a granulator, a mixer, etc.

    DISPERSING AGENT FOR COALLWATER SLURRY

    公开(公告)号:JPS5657890A

    公开(公告)日:1981-05-20

    申请号:JP13388979

    申请日:1979-10-17

    Applicant: KAO CORP

    Abstract: PURPOSE:To prepare the titled dispersing agent giving a coal-water slurry having high dispersion stability, excellent deashing characteristics, and high fluidity, by using a copolymer of (meth)acrylic acid and other vinyl monomers or a salt of the copolymer as an effective component. CONSTITUTION:A dispersing agent containing one or more compounds selected from a copolymer of (meth)acrylic acid and other vinyl monomers (pref. styrene or 4-8C alkene), its salt (pref. alkali metal salt or ammonium salt), the hydrolyzate of a copolymmer of a (meth)acrylic acid ester and other vinyl monomers, and its salt, as effective components. The molar ratio of the acrylic monomer to the vinyl monomer is pref. 8/2-5/5, and the average molecular weight of the copolymer is pref. 2,000-20,000.

    PREPARATION OF ALKENYLSUCCINIC ACID OR ITS SALT

    公开(公告)号:JPS55167247A

    公开(公告)日:1980-12-26

    申请号:JP7524479

    申请日:1979-06-15

    Applicant: KAO CORP

    Abstract: PURPOSE:To prepare high quality title compound without causing troubles of sublinated maleic anhydride, by adding an aliphatic alcohol to the reaction produce of an olefin with maleic anhydride, and heating the mixture under reduced pressure to distil out the unreacted raw materials. CONSTITUTION:An alkenylsuccinic acid is prepared in high purity, by (1) reacting an olefin with maleic anhydride, (2) adding a 1-3C aliphatic alcohol to the reaction mixture to esterify the remaining maleic anhydride, and (3) heating the product under reduced pressure to distil out the unreacted alcohol, the unreacted olefin, and maleic acid esters. The alkenylsuccinic acid thus obtained can be converted to a salt by neutralizing with a base. EFFECT:Blocking of a vacuum pump, vacuum lines, etc. with sublimated maleic anhydride, can be prevented.

    SLUDGEECONTAINING MIXED FUEL COMPOSITION

    公开(公告)号:JPS55139495A

    公开(公告)日:1980-10-31

    申请号:JP4652279

    申请日:1979-04-16

    Applicant: KAO CORP

    Abstract: PURPOSE:To improve stability, by adding a polyoxyethylene aliphatic diamine or a salt thereof to a mixture of fuel, sludge, pulverized coal and water. CONSTITUTION:To a mixture of fuel oil, sludge, pulverized coal and water is added a polyoxyethylene aliphatic diamine represented by the formula, wherein R1 is a 6-22C alkyl or alkenyl, R2 is a 2-3C alkylene, 1, m and n each is 0-20 and 1+m+n=1-30, or a salt thereof. By adding 0.01-3.0wt%, based on the total, of a compound represented by the aforementioned formula or a salt thereof, the sludge and the coal particles, or the coal-containing sludge cake is dispersed stably in the fuel oil, and they, even if settled to the bottom, form a soft precipitate which can be easily dispersed.

    SLUDGEECONTAINING MIXED FUEL
    119.
    发明专利

    公开(公告)号:JPS55139494A

    公开(公告)日:1980-10-31

    申请号:JP4652179

    申请日:1979-04-16

    Applicant: KAO CORP

    Abstract: PURPOSE:To improve stability, by adding a polyoxyethylene aliphatic amine or a salt thereof to a mixture of fuel oil, sludge, pulverized coal and water. CONSTITUTION:To a mixture of fuel oil, sludge, pulverized coal and water is added a compound selected from the group consisting of a polyoxyethylene aliphatic amine, wherein R1 is a 6-22C alkyl or alkenyl, m and n each is 0-20, and m+ n=1-30, or a salt thereof. By adding 0.01-3.0wt%, based on the total, of a compound represented by the aforementioned formula, or a salt thereof, the sludge and the coal particles or the coal-containing sludge cake is dispersed stably in the fuel oil, and they, even if settled to the bottom, form a soft precipitate which can be easily redispersed.

    STABILIZER FOR MIXED FUEL
    120.
    发明专利

    公开(公告)号:JPS5556189A

    公开(公告)日:1980-04-24

    申请号:JP12937378

    申请日:1978-10-20

    Applicant: KAO CORP

    Abstract: PURPOSE:A stabilizer for mixed fuel made from powdered coal and fuel oil that is composed of a reaction product by the addition of maleic anhydride or fumaric acid to a compound with reactive double bonds in the molecule as the effective ingredient. CONSTITUTION:Said stabilizer for mixed fuel made from powdered coal and fuel oil consists of (C) a reaction product of 100-10,000 molecular weight by the addition reaction of (B) maleic anhydride or fumaric acid to (A) a compound with reactive double bonds in the molecule or its hydrolyzate, amide derivative or esterified product. The compound (A) is, e.g., conjugated polyolefin, alpha-olefin or polybutadiene. The stabilizer is added to the coal-oil-mix (COM) in an amount of 0.01- 1wt% to disperse stably the coal particles inthe fuel oil.

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