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KR900014567A - High concentration of coal aqueous slurry and its production method - Google Patents

High concentration of coal aqueous slurry and its production method Download PDF

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Publication number
KR900014567A
KR900014567A KR1019900003605A KR900003605A KR900014567A KR 900014567 A KR900014567 A KR 900014567A KR 1019900003605 A KR1019900003605 A KR 1019900003605A KR 900003605 A KR900003605 A KR 900003605A KR 900014567 A KR900014567 A KR 900014567A
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coal
slurry
partial
aqueous slurry
aqueous
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KR0138512B1 (en
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노보루 하시모토
고이치 이토
신이치 도쿠다
오사무 마츠모토
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와타베 에이지
니키 가부시키가이샤
이노우에 준이치
니본 콤 가부시키가이샤
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Liquid Carbonaceous Fuels (AREA)

Abstract

내용 없음No content

Description

고농도의 석탄 수성슬러리와 그의 제조방법High concentration of coal aqueous slurry and its production method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 석탄입자크기의 변동계수 C와, 점도 1000cp인 본 발명에 따른 석탄 수성슬러리에 포함된 석탄입자의 농도 사이의 관계를 나타낸 그래프이고,1 is a graph showing the relationship between the coefficient of variation C of the coal particle size and the concentration of coal particles contained in the coal aqueous slurry according to the present invention having a viscosity of 1000 cps.

제2도는 석탄입자크기의 변동계수 C와, 석탄 수성슬러리에 대해 원심가 속기로 분산안정성 시험을 실시했을 때 석탄 수성슬러리중 침전된 석탄입자의 백분율 사이의 관계를 나타낸 그래프이며,2 is a graph showing the relationship between the coefficient of variation C of the coal particle size and the percentage of coal particles deposited in the coal aqueous slurry when the dispersion stability test was carried out using a centrifugal shorthand for the coal aqueous slurry.

제3도는 석탄입자크기의 변동계수 C와, 석탄입자 전체량에 대한 표준점도로 조절하는데 요구되는 분산제 최소량의 비율 사이의 관계를 나타낸 그래프.3 is a graph showing the relationship between the coefficient of variation C of the coal particle size and the ratio of the minimum amount of dispersant required to adjust the standard viscosity to the total amount of coal particles.

Claims (8)

500㎛ 또는 그 이하의 입자크기로 된 석탄입자가 분산제가 함유된 수성용매에 분산되어 있되, 석탄입자크기의 변동계수가 다음 방정식(I)에 의해 0.3 또는 그 이상인 입자크기 분포를 갖는 것을 특징으로 하는 고농도의 석탄 수성슬러리.Coal particles having a particle size of 500 μm or less are dispersed in an aqueous solvent containing a dispersant, and the coefficient of variation of the coal particle size has a particle size distribution of 0.3 or more according to the following equation (I). High concentration of coal aqueous slurry. 윗 식에서, C는 석탄입자크기의 변동계수이고, M은 다음 방정식(II)에 의해 계산된 석탄 입자크기의 평균상용로그 값이며, δ는 다음 방성식(III)에 의해 계산된 석탄 입자크기의 표준편차이다.Where C is the coefficient of variation of coal particle size, M is the average commercial log value of coal particle size calculated by the following equation (II), and δ is the standard of coal particle size calculated by the following equation (III) Deviation. 여기서, M은 상기 정의와 같으며, S1는 분율i에서㎛단위를 갖는 석탄입자의 평균크기로서, 이때, 분율i란 석탄입자 전체를 입자크기 순서로 나눈 여러개의 분율중 하나이고, 각 분율들은 미리 결정된 범위의 크기를 갖는 석탄입자들로 이루어저 있으며, V1는 석탄입자 전체에 대한 분율i에서 석탄입자의 중량비 또는 부피비이다.Here, M is the same as defined above, S 1 is the average size of coal particles having a unit of μm in the fraction i, where fraction i is one of several fractions divided by the whole coal particles in order of particle size, each fraction They consist of coal particles having a predetermined range of sizes, where V 1 is the weight ratio or volume ratio of the coal particles at the fraction i over the entire coal particle. (가)석탄을 습식 미분쇄법으로 분쇄시키고, 그 결과로 얻어진 석탄입자 수성슬러리를 탈수시켜서 500㎛ 또는 그 이하의 크기를 갖는 석탄입자가 60중량% 또는 그 이상으로 포함되어 있는 탈수된 석탄 케이크를 제조하는 단계와, (나)상기의 탈수된 석탄 케이크를 반죽기에서 물과 분산제와 함께 혼합시켜 석탄입자가 60내지 80중량% 포함된 석탄 수성슬러리(A)를 만드는 단계와, (다)상기 석탄 수성슬러리(A)의 일부분(B)을 더욱 미분화시키는 과정을 통해 상기 부분(B)에 있는 석탄입자를 더욱 미부화시키는 단계와, (라)상기의 더욱 미분화된 부분(B)을 석탄 수성슬러리(A)의 잔류부분(D)과 혼합시키는 단계로 이루어짐을 특징으로 하는 고농도의 석탄 수성슬러리의 제조방법.(A) Dehydrated coal cake containing 60% by weight or more of coal particles having a size of 500 µm or less by dehydration of coal by wet pulverization and dehydration of the resulting aqueous slurry of coal particles. (B) mixing the dehydrated coal cake with water and a dispersant in a kneader to produce coal aqueous slurry (A) containing 60 to 80% by weight of coal particles; Further undifferentiating the coal particles in the portion (B) through the process of further micronizing the portion (B) of the coal-based aqueous slurry (A), and (D) the coal-based aqueous slurry (B) Method for producing a high concentration of coal aqueous slurry, characterized in that the step of mixing with the remaining portion (D) of (A). 제2항에 있어서, 석탄 수성슬러리(A)의 부분(B)은 석탄 수성슬러리(A)의 전체 중량에 대해 50내지80%이고, 미분쇄과정은 상기 부분(B)과 잔류부분(D)을 혼합시킨 후에 실시하며, 그로부터 얻어진 석탄 수성슬러리는 크기가 5㎛ 또는 그 이하인 석탄입자가 15중량% 또는 그 이상으로 포함된 것임을 특징으로 하는 고농도의 석탄 수성슬러리의 제조방법.The portion (B) of the coal-based aqueous slurry (A) is 50 to 80% of the total weight of the coal-based aqueous slurry (A), and the pulverization process comprises the portion (B) and the remaining portion (D). It is carried out after mixing, the coal aqueous slurry obtained therefrom is a method for producing a high concentration of coal aqueous slurry, characterized in that containing the coal particles having a size of 5㎛ or less in 15% by weight or more. (가)분산제가 함유된 수성 용매에서 석탄물질을 60내지80중량%의 고농도로 미분쇄하여 100㎛ 또는 그 이하의 크기를 갖는 석탄입자를 함유하는 고농도의 석탄 수성슬러리로 이루어진 부분 슬러리(E)를 제조하는 단계와, (나)별도로, 분산제가 없는 수성용매에서 저농도로 석탄 물질을 미분쇄하고, 그 결과로 얻어진 석탄 수성슬러리를 탈수시켜 500㎛ 또는 그 이하의 크기를 갖는 석탄입자를 포함하는 탈수된 석탄 캐이크로 이루어진 부분케이크(F)를 제조하는 단계와, (다)상기 부분 슬러리(E)와 부분케이크(F)를 혼합시키는 단계로 이루어짐을 특징으로 하는 고농도의 석탄 수성슬러리의 제조방법.(A) Partial slurry consisting of a high concentration of coal aqueous slurry containing coal particles having a size of 100 μm or less by pulverizing coal material in a high concentration of 60 to 80 wt% in an aqueous solvent containing a dispersant (E). And (b) separately pulverizing coal material at low concentration in an aqueous solvent without a dispersant, and dewatering the resulting aqueous coal slurry to include coal particles having a size of 500 µm or less. (C) a method for producing a high concentration of coal aqueous slurry, characterized in that it comprises the step of preparing a partial cake (F) consisting of dehydrated coal caulk, (C) mixing the partial slurry (E) and the partial cake (F). . 제4항에 있어서, 부분 케이크(F)는 부분 슬러리(E)와 혼합되기 전에, 수성용매와 상기 공정에서 제조된 고농도 석탄 수성슬러리의 일부분중 어느 하나 또는 두가지 모두와 혼합 및 반죽되어 60내지80중량%의 농도로 석탄입자가 포함된 수성슬러리로 이루어진 부분 슬러리(G)로 된 다음, 이 부분 슬러리(G)를 부분 슬러리(E)와 혼합시켜 되는 것임을 특징으로 하는 고농도의 석탄 수성슬러리의 제조방법.The partial cake (F) according to claim 4, wherein before the partial cake (F) is mixed with the partial slurry (E), it is mixed and kneaded with any one or both of an aqueous solvent and a portion of the high concentration coal aqueous slurry prepared in the above process. Preparation of a high concentration of aqueous coal slurry, characterized in that the slurry consisting of a partial slurry (G) consisting of an aqueous slurry containing coal particles in a concentration of% by weight, and then mixed with the partial slurry (E). Way. 제5항에 있어서, 부분 케이크(F)는 부분 슬러리(G)의 석탄중량에 대해 0.3내지0.8%의 분산제와 더 혼합시켜 되는 것임을 특징으로 하는 고농도의 석탄 수성슬러리의 제조방법.The method of claim 5, wherein the partial cake (F) is further mixed with 0.3 to 0.8% of a dispersant based on the coal weight of the partial slurry (G). 제4항 또는 제5항에 있어서, 부분 슬러리(E)는 부분 케이크(F)와 부분 슬러리(G)중 어느 하나와 혼합시키되, 혼합비율은 부분 케이크(F)나 부분 슬러리(G)의 석탄입자 중량에 대하여 부분 슬러리(E)의 석탄입자 중량의 비로 8:2 내지 5:5인 것임을 특징으로 하는 고농도의 석탄 수성 슬러리의 제조방법.The partial slurry (E) of claim 4 or 5, wherein the partial slurry (E) is mixed with either the partial cake (F) or the partial slurry (G), and the mixing ratio is coal of the partial cake (F) or the partial slurry (G). A method for producing a high concentration of coal aqueous slurry, characterized in that the ratio of the weight of the coal particles of the partial slurry (E) to 8: 2 to 5: 5 to the particle weight. 제4항에 있어서의 석탄 수성슬러리는 5㎛ 또는 그 이하의 크기를 갖는 석탄입자가 15중량% 또는 그 이상으로 포함되는 것임을 특징으로 하는 고농도의 석탄 수성슬러리의 제조방법.The method for producing a high-density coal-based aqueous slurry according to claim 4, wherein the coal-based aqueous slurry contains 15% by weight or more of coal particles having a size of 5 µm or less. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900003605A 1989-03-17 1990-03-17 High concentration coal aqueous slurry and process for producing same Expired - Fee Related KR0138512B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1-63576 1989-03-17
JP1063576A JP2603127B2 (en) 1989-03-17 1989-03-17 Method for producing high concentration coal / water slurry

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KR900014567A true KR900014567A (en) 1990-10-24
KR0138512B1 KR0138512B1 (en) 1998-04-27

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Publication number Priority date Publication date Assignee Title
CN102732341A (en) * 2011-04-07 2012-10-17 通用电气公司 Coal water slurry and preparation method thereof
CN103965981B (en) 2013-01-31 2016-05-25 通用电气公司 The apparatus and method of preparation water-coal-slurry
CN105038878B (en) * 2015-07-08 2017-03-01 中煤科工清洁能源股份有限公司 A kind of method preparing water-coal-slurry
KR101992622B1 (en) 2017-04-21 2019-09-30 한국에너지기술연구원 A viscosity measurement apparatus for high temperature coal slurry and method for testing stability of high temperature coal slurry using thereof

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Publication number Priority date Publication date Assignee Title
JPS59157184A (en) * 1983-02-28 1984-09-06 Babcock Hitachi Kk Preparation of coal-water slurry
JPS60156796A (en) * 1984-01-25 1985-08-16 Mitsubishi Heavy Ind Ltd Manufacture of highly concentrated coal-water slurry
JPS62265392A (en) * 1986-05-12 1987-11-18 Kubota Ltd Coal/water slurry

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JPH02245095A (en) 1990-09-28
CA2012197A1 (en) 1990-09-17
KR0138512B1 (en) 1998-04-27
CN1046179A (en) 1990-10-17
AU5133590A (en) 1990-09-20
AU628490B2 (en) 1992-09-17
JP2603127B2 (en) 1997-04-23
CN1028242C (en) 1995-04-19

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