WO2014077704A2 - Pulvérisateur d'huile chaude - Google Patents

Pulvérisateur d'huile chaude Download PDF

Info

Publication number
WO2014077704A2
WO2014077704A2 PCT/NZ2013/000206 NZ2013000206W WO2014077704A2 WO 2014077704 A2 WO2014077704 A2 WO 2014077704A2 NZ 2013000206 W NZ2013000206 W NZ 2013000206W WO 2014077704 A2 WO2014077704 A2 WO 2014077704A2
Authority
WO
WIPO (PCT)
Prior art keywords
oil
polystyrene
spray
product
heat exchanger
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/NZ2013/000206
Other languages
English (en)
Other versions
WO2014077704A3 (fr
Inventor
Aaron Melville IRWIN
Tracie Marie IRWIN
John Ngatae MAKURU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POLYGONE Ltd
Original Assignee
POLYGONE 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
Application filed by POLYGONE Ltd filed Critical POLYGONE Ltd
Publication of WO2014077704A2 publication Critical patent/WO2014077704A2/fr
Publication of WO2014077704A3 publication Critical patent/WO2014077704A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/24—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means incorporating means for heating the liquid or other fluent material, e.g. electrically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the invention relates to a method of reducing the amount of polystyrene which is destined for landfill.
  • the invention relates to a method of reducing polystyrene to a form that is able to be disposed of in landfill.
  • the invention also relates to an apparatus for reducing the amount of polystyrene that is committed to landfill.
  • Polystyrene cannot be taken to landfill. Therefore demolition of buildings had to be halted until such time as an appropriate disposal method was identified. It has been estimated that in the demolition required in Zealand alone, enough polystyrene was present in the buildings requiring demolition to fill several large rugby stadiums when laid flat from end to end and ground to roof level.
  • the invention was developed from an idea of breaking the polystyrene down from its aerated form to reduce the cost of demolition and speed up the rebuild process.
  • the invention provides an apparatus for reducing the volume of polystyrene comprising: a heating means to heat oil to a temperature below the boiling point of the oil; a means of directing the heated oil from the heating means to a spray means; and a spray means through which the oil is directed onto a sample of polystyrene.
  • the spray means includes a spray delivery nozzle.
  • the spray means includes a quick release coupling to allow interchange of spray delivery nozzles.
  • the spray delivery nozzle may include a spray lance to direct oil in an even manner onto the polystyrene.
  • the spray means may also include a spear lance which is adapted to be inserted into concrete slabs that contain polystyrene inside.
  • the heating means preferably includes a heat exchanger which heats up a thermal heating fluid which in turn heats the oil.
  • the heat exchanger includes two chambers: a first chamber in which the thermal heating fluid is maintained at a constant temperature; and a second chamber which the oil passes through as it is heated by the thermal heating fluid.
  • the apparatus may include a heat pump to recirculate hot thermal fluid from the top of the heat exchanger through a delivery hose and back to the bottom of the heat exchanger to reduce the heat loss of the thermal fluid and to prevent it cooling when the spray means is inactive.
  • the apparatus may be built onto a trailer or the l ike for ease of movability.
  • the invention also provides a method of reducing the volume of a sample of polystyrene comprising the steps of: heating an oil to a temperature slightly below the boiling point for the oil; directing the oil through an oil flow means and towards the sample of polystyrene to be treated; and spraying the heated oil onto the polystyrene.
  • the oil is heated to a temperature of between 210-250°C and more preferably between 220-240°C.
  • the oil is selected from the group consisting of: corn, canola, groundnut, linseed, olive, safflower, sesame, soybean, sunflower and rapeseed.
  • the oil is crude, refined and bleached or refined bleached and deodorised.
  • the method may be performed using the apparatus according to the present invention.
  • the oil sprayer is used as a permanent fixture rather than being transportable.
  • a hot oil sprayer which is a permanent feature of a landfill or the like.
  • the hot oil sprayer may be set up to spray over a movable belt type of system, for example a conveyor belt system.
  • the product may be moved along the conveyor belt and pass under a nozzle system which may comprise a single or a system of nozzles.
  • the nozzles are adapted to spray the oil onto the polystyrene.
  • the oil may then fal l down onto a grease trap and may be recycled.
  • the product is environmentally friendly and extremely cost effective when compared to the current disposal system.
  • the product has been tested and approved for hardfill and landfill disposal. There are no harmful toxins or emissions during the treatment process.
  • the product continues to breakdown long after the process has been completed. It can be used in a concrete crusher to be broken down even further and re used along with crushed concrete for other construction projects.
  • This invention has gained worldwide interest as the use of polystyrene in packaging has become prolific however the dumping of the product is a cause of great concern and cost.
  • Figure 1 is an overview drawing of the apparatus when sitting on a movable trailer
  • Figure 2 is a diagrammatic representation of the apparatus; and Figure 3 is a more detailed diagrammatic view of the heat exchanger.
  • the apparatus comprises the following features:
  • Foot valve which prevents any product in the suction hose from pouring back out of the hose when it is removed from the product drum;
  • Product drum which is a container that is used to store the unused product. The product drum may be secured to a trailer or the like for ease of moving the apparatus.
  • the electrical cabinet stores the control equipment. Both the product pump and the recirculation heating pump can be operated from the cabinet.
  • the control system uses the temperature reading from the PT100 probe to turn the electrical elements on and off. If the PT100 fails at any time, an over temperature snap disc switch located on the side of the heat exchanger will shut down the heating system.
  • the temperature of the heating fluid can be adjusted on the control unit;
  • the main supply connection is a 5 pin 32 Amp 3 phase connection and there is an auxiliary single phase connection available.
  • Product pump which is used to draw cold product oil from the product drum and pump it through the heat exchanger to the spraying lance;
  • Product pump electric motor which is used to drive the product pump and is controlled via the control panel
  • flow totalizer which is battery operated and digitally displays the total amount in litres of product oil that passes through the heat exchanger and out of the spray lance;
  • Pressure release valve which is used to control the product pressure beyond the product pump.
  • the pressure relief valve is set so that it will relieve at 45 psi. Any product that is relieved will be returned to the product drum.
  • Product pressure gauge which indicates the pressure that is within the product line
  • PT100 temperature probe which is used to measure the temperature of the thermal heating fluid. The reading from the PT100 is used by the control unit to operate the heating elements
  • Temperature gauge which gives a mechanical temperature reading of the thermal heating fluid
  • the thermometer is used to check the calibration of the PT100. Being a mechanical gauge this ensures that temperature readout of the thermal fluid is available at all times
  • Snap disc thermostat which is used a s a safety shut off for the system. If the PT100 or control system fails, the snap disc will activate at 280°C and shut down the heating system; High temperature needle vale which is used to drain the heat exchanger of the thermal heating fluid.
  • Recirculating the thermal fluid through the hose reduces the heat loss of the product fluid and prevents the product fluid cooling while the spray gun is not operating; Safety release valve.
  • the system operating pressure is 45 psi. If the product oil pressure becomes greater than the operating pressure then this valve will open, making sure the product pressure never exceeds 60 psi.
  • Header tank which allows all the air in the heat exchanger to be removed and provides additional storage for the thermal heating fluid as it expands with the change in temperature
  • Slops tank is a 145 l itre stainless steel tank that can be used for collecting any product oil spray when checking the temperature at the spraying nozzle/ Any oil bypassed from the pressure relief valve also ends up in the slops tank
  • 1 ⁇ 2" ball valve one of the ball valves is used to isolate the heat exchanger from the inlet pipework during maintenance, while the second ball valve is sued as a drain for the slops tank;
  • Pipework temperature gauge which is used to measure the temperature of the product exiting the heat exchanger' 1 ⁇ 4" stainless steel braided Teflon hose which is rated to 2600C (continuous) and three lengths of hose are used to transport the product oil to the spray lance, as well as transport the thermal heating fluid to the lance and back to the heat exchanger; 232MB steam Queen hose which is used as an external
  • the thermal fluid is redirected back to the heat exchanger at this point;
  • Digital thermometer which is battery operated and provides a temperature reading of the product just before it enters into the spray lance; 1 ⁇ 4 " quick release coupling which allows the spray lance to be quickly changed to a spear lance;
  • Trigger gun which provides an easy to operate open close mechanism for the spraying lance;
  • Spraying lance which provides a means of spraying the product oil onto the polystyrene;
  • Spray nozzle which forces the oil into a fan which can be sprayed over the polystyrene;
  • 1 ⁇ 4 " high temperature needle vale which provides a means of shutting off the oil when the hose is coupled to the spear lance; Spear lance which is used by inserting it into concrete slabs that have a polystyrene core.
  • Spraying the product oil into the space removes the polystyrene around the lance;
  • Spray nozzles are fitted along the shaft of the spear lance to provide discernment of the oil over a longer distance to remove all polystyrene inside the concrete slabs;
  • Heat exchanger which is the main body of the hot oil system operation.
  • the heat exchanger has two chambers, one in which a thermal heating fluid is maintained at a constant temperature and a second chamber where the oil passes through to be heated from 0 degrees C up to 255° C.
  • the thermal heating fluid is heated via the electrical elements and the thermal fluid in turn heats the oil;
  • Tandem axle trailer which provides the platform upon which the hot oil system is installed. It provides mobility and allows the entire system to be transported to any potential worksite.
  • the trailer in this case has been modified from a standard digger transporter to accommodate the mounting of all the equipment necessary for the system to operate.
  • thermometer 10. A temperature thermometer
  • the heat exchanger is shown in detail in Figure 3 and includes:
  • the pump will circulate through the pressure relief valve back into the product drum until the trigger gun is pulled; ⁇ Turn on the heat recirculation pump. The pump will circulate thermal heating fluid from the top of the exchanger through the hose and back into the heat exchanger.
  • the temperature indicator shows the oil to be at the desired operating temperature (220-240°C) release the gun trigger and ensuring there is no oil spraying, remove the gun from the test pocket;
  • the oil sprayer may not be positioned on a trailer type of unit but could be permanent or semi-permanent.
  • the polystyrene to be treated may move on a conveyer belt beneath a spray means and the hot oil sprayed onto the polystyrene as it moves under the spray means.
  • the invention provides an apparatus and method which can be used to reduce th amount of polystyrene waste product being sent to a landfill.
  • the apparatus is designed to spray hot oil onto a sample of waste polystyrene.
  • the pressure and type of oil used enable the polystyrene to be reduced from its aerated form to a form more able to be disposed of in landfill.
  • the method and apparatus thus reduces the amount of waste polystyrene material being dumped in landfill and provides a more environmentally friendly method of disposing of this waste product.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

L'invention porte sur un dispositif qui réduit le volume de polystyrène. L'appareil selon la présente invention comprend un moyen de chauffage pour chauffer un échantillon d'huile à une température au-dessous du point d'ébullition de l'huile et un moyen pour acheminer l'huile chauffée sur un échantillon de polystyrène de rebut. L'huile agit sur le polystyrène pour réduire la forme aérée du polystyrène en une forme moins aérée qui a un plus petit volume et qui est acceptable pour le dépôt sur un site de décharge. L'appareil peut être relié à un véhicule mobile pour la facilité du transport. L'invention porte également sur un procédé de réduction du volume d'un échantillon de polystyrène en une forme plus gérable.
PCT/NZ2013/000206 2012-11-15 2013-11-14 Pulvérisateur d'huile chaude Ceased WO2014077704A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ60362912 2012-11-15
NZ603629 2012-11-15

Publications (2)

Publication Number Publication Date
WO2014077704A2 true WO2014077704A2 (fr) 2014-05-22
WO2014077704A3 WO2014077704A3 (fr) 2014-07-24

Family

ID=50731799

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2013/000206 Ceased WO2014077704A2 (fr) 2012-11-15 2013-11-14 Pulvérisateur d'huile chaude

Country Status (1)

Country Link
WO (1) WO2014077704A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1062029A (en) * 1911-03-27 1913-05-20 Walter Cressy Apparatus for spraying oil on road-surfaces.
US2167940A (en) * 1935-02-16 1939-08-01 John A Erickson Heating and spraying apparatus
US2461766A (en) * 1945-06-06 1949-02-15 Vilbiss Co Apparatus for heating and circulating spray material
US2517049A (en) * 1948-03-10 1950-08-01 Arthur L Stevens Apparatus for heating and spraying lacquer or the like
US7476696B2 (en) * 2005-04-06 2009-01-13 Blue Earth Solutions, Inc. Reduction in polystyrene foams with low vapor pressure dibasic esters

Also Published As

Publication number Publication date
WO2014077704A3 (fr) 2014-07-24

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