WO1996009361A1 - Agent modificateur de coulis et procede de traitement d'un coulis - Google Patents

Agent modificateur de coulis et procede de traitement d'un coulis Download PDF

Info

Publication number
WO1996009361A1
WO1996009361A1 PCT/AU1995/000619 AU9500619W WO9609361A1 WO 1996009361 A1 WO1996009361 A1 WO 1996009361A1 AU 9500619 W AU9500619 W AU 9500619W WO 9609361 A1 WO9609361 A1 WO 9609361A1
Authority
WO
WIPO (PCT)
Prior art keywords
slurry
modifier
weight
ash
parts
Prior art date
Application number
PCT/AU1995/000619
Other languages
English (en)
Inventor
Joseph Bertony
Original Assignee
Material Transportation Technologies Pty. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AUPM8258A external-priority patent/AUPM825894A0/en
Priority claimed from AUPM9308A external-priority patent/AUPM930894A0/en
Application filed by Material Transportation Technologies Pty. Ltd. filed Critical Material Transportation Technologies Pty. Ltd.
Priority to AU35585/95A priority Critical patent/AU3558595A/en
Publication of WO1996009361A1 publication Critical patent/WO1996009361A1/fr

Links

Classifications

    • 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, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
    • C10L1/326—Coal-water suspensions

Definitions

  • the present invention relates to the pumping of slurries, which can be considered as including particulate materials of any type mixed with a liquid medium in proportions which allow the mix to flow.
  • slurries which can be considered as including particulate materials of any type mixed with a liquid medium in proportions which allow the mix to flow.
  • examples of the foregoing are fine coal slurries and coal ash slurries, with the coal ash in different forms as by-products of the burning of coal in coal fired electricity generation plants.
  • Other examples are water/mineral ore mixtures of the type found in mineral treatment plants and in dredging and tailings operations.
  • the invention relates to a modifier to modify and extend the plasticity and retard the settling of the slurry, and to a method of treating slurries thereby facilitating the handling of such slurries.
  • the ash produced by power stations is generally combined with water to form a slurry which is pumped out of the power station and, when available, is used to fill underground coal mines workings after mining operations are terminated, or, open-cut mines and other excavations which are built for the purpose of settling the ash from the ash slurry ash. Because of the heavy metals and other contaminants which may be involved, the amount of water mixed with the coal ash is kept to a minimum in an effort to prevent contamination of the water table.
  • coal ash which makes it useful as a filling material is that after a short time during which there is no movement of the slurry, typically 6 to 1000 hours, the ash sediments, and compacts to a point where it is no longer flowable. Ash forms a well compacted sediment which will not move without considerable force being applied.
  • a slurry modifier which is a mixture of alcohol, a vegetable oil and an organically derived spirit.
  • the slurry modifier would be: between 0.2 and 3 parts by weight of an alcohol; between 0.2 and 3 parts by weight of an organically derived spirit; and between 0.2 and 3 parts by weight of a vegetable oil.
  • the modifier of the first preferred form would additionally include: between 0.2 and 3 parts by weight of raw sugar and/or between 0.2 and 4 parts by weight of ammonia solution.
  • An organic alcohol may be a lower alcohol such as ethanol or methanol.
  • the ammonia is of the form of an aqueous solution, but the ammonia could also be added to the slurry directly in the form of a soluble ammonium salt.
  • An organic turpentine derived from a natural source, such as the sap of trees, and particularly gum turpentine, is expecially preferred for use in the invention, as such turpentines are more readily bio-degraded, and therefore are more environmentally compatible.
  • a particularly preferred vegetable oil which may be used in the invention can be the cheapest vegetable oil available, which may be pre-used or waste kitchen oil, such as may be discarded from deep fryers.
  • Other vegetable oils which can be used include safflower oil, sunflower oil, live oil and canola oil.
  • modifier constituents as above have been found to have a synergistic relationship and that relationship has been found to continue to develop during storage of the modifier.
  • this combination may, additionally include the following constituents:
  • ammonia solution be of a concentration of 25% by weight (w/w), although any solution with an ammonia concentration of between 5% to 95% can be used with differing degrees of effect or as may be desired to suit the characteristics of different slurries.
  • soluble ammonia salts such as ammonium chloride or ammonium bicarbonate can be added directly to the slurry or introduced as part of a slurry modifier mix.
  • the invention further provides a method of treating an ash or coal slurry, including the step of adding to the slurry, a slurry modifier containing the following constituents: between 0.2 and 3 parts by weight of an alcohol; .
  • the method includes the step of adding to the slurry modifier containing the following further constituents: . between 0.2 and 3 parts by weight of raw sugar; and between 0.2 and 4 parts by weight of an ammonia solution, between 0.2 and 6 parts by weight of water
  • the slurry modifier is added to the slurry in a ratio in the range of one part slurry modifier to between one hundred and two thousand parts by weight of the slurry.
  • One of the advantages of adding this modifier to coal slurries, in particular, fine coal slurries, is that the constituents are in the main, organic, and can thus be burned.
  • Ash from a Australian Hunter Valley power station, which burns locally mined coal, was made up as a 72% ash slurry, where the ash slurry contains 72% by weight of ash and 28% by weight of water. Such a slurry was allowed to remain in an air tight container and the slurry set in 24 hours of no movement. After 24 hours had elapsed 15-18% of the water was recoverable at the surface. After 24 hours, while the slurry could still be mixed in a laboratory situation, it would have been practically unmovable in a field use situation.
  • a slurry modifier was produced from the following constituents: 1. 1 part by weight of vegetable oil; 2. 1 part by weight of gum turpentine;
  • a slurry modifier was produced from the following constituents:
  • the slurry modifier described in Modified Slurry Example 2 above was mixed in a 1 -1000 ratio by weight with a 73.7% slurry made from the ash slurry of Unmodified Slurry Example 1. After 12 days of no movement, the slurry was found to be sufficiently remixable in such a manner as to indicate that when translated to a field situation, it would have been easily removable by normal pumping operations.
  • a slurry modifier having the following constituents was made up: 1 part (50 grams) methyl alcohol 1 part (50 grams) gum turpentine 1 part (50 grams) vegetable oil 1 part (50 grams) sugar
  • the liquid phase - once it has filtered or separated from the solid phase - can generally be pumped back into the pumping system, for addition to another slurry.
  • the liquid phase will contain the modifier of the present invention, when the liquid is returned to the pumping system for the purpose of adding it to another slurry, less additional slurry modifier needs to be added at a later time, to make up an effective solution to treat the subsequent slurry.
  • the plasticity and the plastic phase life of various types of slurry is increased. This enhances the efficiency of, and improves the economic aspects of the pumping, mixing and 'transportation of slurries by pipeline. It also facilitates the disposal of slurries into the environment, in a more environmentally acceptable form.
  • the invention has the advantage that less water than would otherwise be required, can be used to make up a slurry for treatment, given that the slurry modifier of the present invention can be used in conjunction with slurries having up to, in the order of, 80% by weight of solids mixed with a liquid carrier.
  • the increased slurry plasticity and/or reduction of viscosity will also result in reduced pumping power requirements.
  • FIG. 1 indicates a suitable pump, for exaple a peristaltic pump of the type covered in the applicant PCT application number PCT/AU94/00696.
  • the numeral 2 indicated a slurry hopper coupled to the pump 1 and provided with vertical paddle mixers 3, naturally other type mixers could be used.
  • Above the hopper there is a slurry modifier dispensing means 4 comprised of spray heads 5 and coupled to a header 6.
  • a rotary valve 7 Disposed above the hopper 2 there is means to supply the particulate material in measured quantities. As illustrated this comprises a rotary valve 7 with an associated automatic batch weighing control 8 and flow meter 9.
  • a bulk supply of slurry modifier is prepared designed to suit the particulate material to be handled is stored in the reservoir 10.
  • the modifier is provided in metered quantities by means of a metering injector 12 and carrier (make-up water) is provided in metered quantities by means of a metering pump 13.
  • carrier make-up water
  • the discharge of the injector 12 and the pump 13 come together in a delivery pipe to the header 6.
  • the modifier/carrier mix is discharged from the spray heads 5 at a controlled rate proportional to the rate of particulate material supply.
  • composition of slurry modifiers made in accordance with the present invention will vary widely, according to the particular compositon of the slurries required to be treated.
  • amount of the slurry modifier required to treat a particular slurry will also vary widely, from case to case.

Landscapes

  • 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)
  • Processing Of Solid Wastes (AREA)

Abstract

Agent modificateur de coulis, se composant d'un mélange d'alcool, d'huile végétale et d'un esprit dérivé de matières organiques, destiné à être ajouté à des coulis pour en modifier et prolonger l'état de plasticité et en faciliter ainsi le traitement, en particulier pour les rendre plus facile à pomper.
PCT/AU1995/000619 1994-09-19 1995-09-19 Agent modificateur de coulis et procede de traitement d'un coulis WO1996009361A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35585/95A AU3558595A (en) 1994-09-19 1995-09-19 A slurry modifier and method of treating a slurry

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPM8258 1994-09-19
AUPM8258A AUPM825894A0 (en) 1994-09-19 1994-09-19 A slurry modifier and method of treating a slurry
AUPM9308 1994-11-08
AUPM9308A AUPM930894A0 (en) 1994-11-08 1994-11-08 A slurry modifier and method of treating a slurry

Publications (1)

Publication Number Publication Date
WO1996009361A1 true WO1996009361A1 (fr) 1996-03-28

Family

ID=25644774

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1995/000619 WO1996009361A1 (fr) 1994-09-19 1995-09-19 Agent modificateur de coulis et procede de traitement d'un coulis

Country Status (1)

Country Link
WO (1) WO1996009361A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1718276A (en) * 1975-09-22 1978-03-02 Keller Corporation, The Fuel composition and method of manufacture
AU3292278A (en) * 1977-05-16 1979-08-09 Keller Corporation, The Stabilized suspension of carbon in hydrocarbon fuel
AU7139781A (en) * 1980-06-19 1981-12-24 British Petroleum Company Plc, The Solid carbonaceous fuel uniformaly dispersed in a lower alcohol
AU7648181A (en) * 1980-10-17 1982-05-11 Boliden Aktiebolag A dispersion fuel and a method for its manufacture
JPS6081293A (ja) * 1983-10-11 1985-05-09 Mitsui Toatsu Chem Inc 液体−固体分散燃料
JPS60192795A (ja) * 1984-03-15 1985-10-01 Mitsui Toatsu Chem Inc 液体−固体分散燃料
JPS62185790A (ja) * 1986-02-12 1987-08-14 Sumikin Coke Co Ltd 高濃度石炭・水スラリ−の製造方法
US4802891A (en) * 1986-04-15 1989-02-07 Mitsui Mining Company, Limited Coal-methanol slurry and its production process

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1718276A (en) * 1975-09-22 1978-03-02 Keller Corporation, The Fuel composition and method of manufacture
AU3292278A (en) * 1977-05-16 1979-08-09 Keller Corporation, The Stabilized suspension of carbon in hydrocarbon fuel
AU7139781A (en) * 1980-06-19 1981-12-24 British Petroleum Company Plc, The Solid carbonaceous fuel uniformaly dispersed in a lower alcohol
AU7648181A (en) * 1980-10-17 1982-05-11 Boliden Aktiebolag A dispersion fuel and a method for its manufacture
JPS6081293A (ja) * 1983-10-11 1985-05-09 Mitsui Toatsu Chem Inc 液体−固体分散燃料
JPS60192795A (ja) * 1984-03-15 1985-10-01 Mitsui Toatsu Chem Inc 液体−固体分散燃料
JPS62185790A (ja) * 1986-02-12 1987-08-14 Sumikin Coke Co Ltd 高濃度石炭・水スラリ−の製造方法
US4802891A (en) * 1986-04-15 1989-02-07 Mitsui Mining Company, Limited Coal-methanol slurry and its production process

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DERWENT, Accession No. 85-149251/25, Class Hoq; & JP,A,60 081 293, (MITSUI TOATSU CHEM INC, MITS), 9 May 1985. *
DERWENT, Accession No. 85-281062, Class A95; & JP,A,60 192 795, (MITSUI KOZAN KK, MITK), 1 October 1985. *
DERWENT, Accession No. 87-267512/38, Class Hoq; & JP,A,62 185 790, (SUMIKIN KAKO KK), 14 August 1987. *

Similar Documents

Publication Publication Date Title
US6695543B2 (en) Method for filling voids with aggregate material
US4577999A (en) Process for storing liquid waste in salt cavities
CN101602566A (zh) 一种针对油田含油污泥的综合处理新工艺
JPS62181392A (ja) 均質混合液の製造方法
FR2589388A1 (fr) Procede de preparation et d'utilisation d'une composition cimentaire durcissable comportant des fines de charbon
US4089657A (en) Stabilized suspension of carbon in hydrocarbon fuel and method of preparation
CN101570416A (zh) 污水处理尾料资源化方法
RU2266258C1 (ru) Способ переработки нефтесодержащего шлама и устройство для его реализации
WO1996009361A1 (fr) Agent modificateur de coulis et procede de traitement d'un coulis
HRP980486A2 (en) Process and plant for preparing and processing of municipal and industrial waste to useful products
CN86101031A (zh) 将输送管输送的细煤泥转变为适合锅炉直接燃烧的煤水混合料的设备和法
RU76252U1 (ru) Производственный комплекс по переработке и утилизации нефтешламов
US5045087A (en) Stabilized suspensions of carbon or carbonaceous fuel particles in water
EP0088791A1 (fr) Compositions comprenant du charbon, de l'eau et un polyelectrolyte.
US4663039A (en) Apparatus for removal of oil from water and adsorbents using glycolipids
CN208927956U (zh) 一种适应于焦化法处理清罐污泥的均质预处理系统
CA2923274A1 (fr) Compositions super absorbantes destinees a la solidification de dechets industriels liquides
CN102912775B (zh) 一种高效清除海洋溢油的处理工艺
RU13289U1 (ru) Система для обработки многокомпонентных жидких отходов
CN218047443U (zh) 化工污泥处理设备
SU1629696A1 (ru) Способ обработки золы перед удалением в золоотвалы
Yegurnov et al. New Technology for Efficient and Environment Friendly Treatment of Various Secondary Energy Resources
CN110143747A (zh) 一种用于黑臭河流底泥资源化的处理系统
JPH01235795A (ja) 土圧系シールド掘進用添加材および土圧系シールド工法
RU2155738C1 (ru) Способ обработки многокомпонентных жидких отходов и система для его осуществления

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase