WO2016056880A1 - Continuous heating of a store of bitumen by high-energy solar panels - Google Patents

Continuous heating of a store of bitumen by high-energy solar panels Download PDF

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Publication number
WO2016056880A1
WO2016056880A1 PCT/MA2014/000054 MA2014000054W WO2016056880A1 WO 2016056880 A1 WO2016056880 A1 WO 2016056880A1 MA 2014000054 W MA2014000054 W MA 2014000054W WO 2016056880 A1 WO2016056880 A1 WO 2016056880A1
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WO
WIPO (PCT)
Prior art keywords
bitumen
energy
solar
solar panels
store
Prior art date
Application number
PCT/MA2014/000054
Other languages
French (fr)
Inventor
Mohamed ELOUAHABI
Abdelaziz Benjouad
Mohsine BOUYA
Yassine BOUISSA
Khalid BOUZIANE
Original Assignee
Universite Internaltionale De Rabat
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 Universite Internaltionale De Rabat filed Critical Universite Internaltionale De Rabat
Publication of WO2016056880A1 publication Critical patent/WO2016056880A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C3/00—Working-up pitch, asphalt, bitumen
    • C10C3/10—Melting
    • C10C3/12—Devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S90/00—Solar heat systems not otherwise provided for
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the invention relates to systems for capturing and transmitting solar energy for industrial purposes.
  • it is the use of solar energy to maintain a bitumen reservoir at a temperature of use.
  • Bitumen is a non-crystalline material of black or dark brown color which comes from the distillation of petroleum and which has the property of a thermo-viscoplastic adhesive with water-repellent qualities, it is substantially soluble in organic solvents such as toluene and carbon disulfide, impermeable and less reactive to water. However, its low chemical reactivity with many agents will not prevent this material from undergoing a slow oxidation aging process by contact with air and water.
  • the bitumen consists essentially of hydrocarbons and typically comprises at least 80% carbon and 15% hydrogen. The rest is oxygen, sulfur, nitrogen and traces of different metals.
  • bitumen is stored in refineries and large deposits in large permanent tanks made of mild steel sheet, with capacities between 100 and 10,000 tons.
  • the tanks of the bitumen are either horizontal or vertical. Most tanks used are horizontal, however most new tanks are vertical.
  • the stored bitumen must remain fluid at an appropriate temperature (160 ° C).
  • the tanks are usually heated by heat exchangers installed in the bottom of the tanks.
  • These heat exchangers are either serpentine-shaped pipes in which hot oils or steam are pumped, or electrical heating resistors.
  • Insulation reduces the amount of energy needed to compensate for heat loss, thereby reducing energy costs.
  • a solar energy capture and transmission heating system (1) is set up and connected in series with a boiler (7) and the tanks (tanks) for storing the bitumen (3).
  • a set of solar collectors (1) are arranged in groups and connected by a hydraulic connection in series.
  • One embodiment of the invention is to use concentration sensors to achieve temperatures of up to 200 ° C.
  • This is particularly the low parabolic cylindro-parabolic collectors or low-concentration parabolic concentrators (MicroCSP) equipped with a single-axis solar tracking system. It concentrates the sun's radiation on a tubular absorber receiver at the focus of the parabolic mirror.
  • the tube transports the heat transfer fluid at operating temperatures between 200 ° C and 300 ° C.
  • the solar boiler To transfer the solar energy received by the solar panels (the solar boiler) via the direct light and diffused to the storage bins, circulates a thermal heat transfer fluid that can rise above 190 ° C (an oil) by a pump centrifugal (2). Another pump (2) circulates the fluid in the boiler (7).
  • the pump increases its flow rate to limit the heat transfer fluid temperature below the critical temperatures (210 ° C) at the exit of the panel.
  • the bitumen storage tanks are equipped with exchangers (4) connected to the circuit for transmitting heat to the bitumen. Valves (5) are arranged to control the flow of the coolant.
  • An expansion vessel (6) maintains the pressure in the circuit at acceptable levels and compensates for changes in volume.
  • Figure 1 provides a representation of the system.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention relates to a system for maintaining the temperature of the bitumen stored in a reservoir (3) by way of solar energy. The objective is to reduce the costs of storing the bitumen in reservoirs by replacing some of the fossil energy currently used with solar energy. A set of concentrating solar collectors transmit the solar energy to the reservoirs by virtue of a heat transfer fluid. A furnace (7) is used to supplement the thermal energy from the solar collectors (1) with fossil energy.

Description

Maintien en chauffe d'un stockage de bitume par des panneaux solaires à  Keeping bitumen storage heated by solar panels at
haute énergie high energy
Description Description
L'invention est relative aux systèmes de capture et de transmission de l'énergie solaire pour des fins industrielles. En particulier il s'agit de l'utilisation de l'énergie solaire pour maintenir un réservoir de bitume à une température d'utilisation.  The invention relates to systems for capturing and transmitting solar energy for industrial purposes. In particular it is the use of solar energy to maintain a bitumen reservoir at a temperature of use.
Le bitume est un matériaux non-cristallin de couleur noir ou brun foncé qui vient de la distillation du pétrole et qui a la propriété d'un adhésif thermo-viscoplastique avec des qualités hydrofuges, il est sensiblement soluble dans des solvants organiques tels que le toluène et le sulfure de carbone, imperméable et moins réactif à l'eau. Cependant, sa faible réactivité chimique avec de nombreux agents, n'empêchera pas ce matériau de subir un processus de vieillissement par oxydation lente par contact avec l'air et l'eau. Bitumen is a non-crystalline material of black or dark brown color which comes from the distillation of petroleum and which has the property of a thermo-viscoplastic adhesive with water-repellent qualities, it is substantially soluble in organic solvents such as toluene and carbon disulfide, impermeable and less reactive to water. However, its low chemical reactivity with many agents will not prevent this material from undergoing a slow oxidation aging process by contact with air and water.
Le bitume se compose essentiellement d'hydrocarbures et comprend typiquement au moins 80 % de carbone et 15 % d'hydrogène. Le reste est l'oxygène, le soufre, l'azote et des traces de différents métaux.  The bitumen consists essentially of hydrocarbons and typically comprises at least 80% carbon and 15% hydrogen. The rest is oxygen, sulfur, nitrogen and traces of different metals.
Le bitume est stocké dans les raffineries et les grands dépôts dans de grands réservoirs permanents en tôle d'acier doux, avec des capacités entre 100 et 10 000 tonnes.  The bitumen is stored in refineries and large deposits in large permanent tanks made of mild steel sheet, with capacities between 100 and 10,000 tons.
Les petits dépôts ainsi que les grands utilisateurs bitume stockent le bitume dans de petits réservoirs permanents ou semi-mobiles de plus de 60 tonnes de capacité.  Smaller depots and large bitumen users store bitumen in small, permanent or semi-mobile tanks of more than 60 tonnes capacity.
Les réservoirs du bitume sont soit horizontaux ou verticaux. La plupart des réservoirs utilisés sont horizontaux, cependant la plupart des nouveaux réservoirs sont verticaux.  The tanks of the bitumen are either horizontal or vertical. Most tanks used are horizontal, however most new tanks are vertical.
Les réservoirs verticaux prennent moins d'espace et sont plus facilement conçus avec du matériel d'agitation pour les liants modifiés.  Vertical tanks take up less space and are more easily designed with stirring equipment for modified binders.
Le bitume stocké doit rester fluide à une température appropriée (160 °C).  The stored bitumen must remain fluid at an appropriate temperature (160 ° C).
Cette spécification générale fait en sorte que le réservoir de stockage doit être capable de chauffer le bitume à la température requise  This general specification ensures that the storage tank must be able to heat the bitumen to the required temperature
Les réservoirs sont généralement chauffés par des échangeurs thermiques installés dans le fond des réservoirs. Ces échangeurs de chaleurs sont soit des tuyaux en forme de serpentins dans lesquels des huiles chaudes ou de la vapeur d'eau sont pompés, soit des résistances électriques de chauffage. The tanks are usually heated by heat exchangers installed in the bottom of the tanks. These heat exchangers are either serpentine-shaped pipes in which hot oils or steam are pumped, or electrical heating resistors.
Une bonne isolation réduit les pertes de chaleur de manière significative, en particulier sur les parois des réservoirs de stockage de bitume et la tuyauterie fonctionnant à des températures de 160 °C.  Good insulation reduces heat loss significantly, especially on the walls of bitumen storage tanks and piping operating at temperatures of 160 ° C.
L'isolation réduit la quantité d'énergie nécessaire pour compenser les pertes thermiques, réduisant ainsi les coûts de l'énergie.  Insulation reduces the amount of energy needed to compensate for heat loss, thereby reducing energy costs.
Cela coûte moins d'énergie de maintenir la température du bitume que de l'augmenter. Par conséquent, il vaut mieux se procurer le bitume à la température d'utilisation et de l'utiliser avant qu'il ne perde beaucoup de sa chaleur.  It costs less energy to maintain the temperature of the bitumen than to increase it. Therefore, it is better to get the bitumen at the temperature of use and use it before it loses much of its heat.
Aujourd'hui, les systèmes de maintien de température du bitume dans les réservoirs utilisent exclusivement l'énergie fossile, principalement le fuel.  Today, bitumen temperature maintenance systems in tanks use only fossil energy, mainly fuel oil.
Notre invention a comme objectif de diminuer les coûts de maintien de la température du bitume à environs 160°C, ainsi que son impact sur l'environnement. Pour cela, un système de chauffage par capture et transmission de l'énergie solaire (1) est mis en place et raccordé en série avec une chaudière (7) et les bacs (réservoirs) de stockage du bitume (3). Our invention aims to reduce the costs of maintaining the temperature of the bitumen at about 160 ° C, as well as its impact on the environment. For this, a solar energy capture and transmission heating system (1) is set up and connected in series with a boiler (7) and the tanks (tanks) for storing the bitumen (3).
Un ensemble de capteurs solaires (1) sont disposés en groupes et reliés par un raccordement hydraulique en série. Un moyen de réalisation de l'invention consiste à utiliser des capteurs à concentration pour atteindre des températures allant jusqu'à 200°C. Il s'agit en particulier du collecteurs cylindro-paraboliques ou concentrateurs paraboliques cylindriques à faible concentration (MicroCSP) équipés d'un système de suivi solaire à un seul axe. Il concentre le rayonnement du soleil sur un récepteur absorbeur tubulaire au foyer du miroir parabolique. Le tube transporte le fluide caloporteur à des températures de fonctionnement entre 200°C et 300 °C.  A set of solar collectors (1) are arranged in groups and connected by a hydraulic connection in series. One embodiment of the invention is to use concentration sensors to achieve temperatures of up to 200 ° C. This is particularly the low parabolic cylindro-parabolic collectors or low-concentration parabolic concentrators (MicroCSP) equipped with a single-axis solar tracking system. It concentrates the sun's radiation on a tubular absorber receiver at the focus of the parabolic mirror. The tube transports the heat transfer fluid at operating temperatures between 200 ° C and 300 ° C.
Pour transférer l'énergie solaire reçue par les panneaux solaire (la chaudière solaire) via la lumière directe et diffuse aux bacs de stockages, on fait circuler un fluide thermique caloporteur pouvant monter au-delà de 190°C (une huile) par une pompe centrifuge (2). Une autre pompe (2) fait circuler le fluide dans la chaudière (7).  To transfer the solar energy received by the solar panels (the solar boiler) via the direct light and diffused to the storage bins, circulates a thermal heat transfer fluid that can rise above 190 ° C (an oil) by a pump centrifugal (2). Another pump (2) circulates the fluid in the boiler (7).
La pompe augmente son débit pour limiter la température du fluide caloporteur en dessous des températures critiques (210 °C) à la sortie du panneau. Les bacs de stockage du bitume sont équipés d'échangeurs (4) reliés au circuit pour transmettre la chaleur au bitume. Des valves (5) sont disposées afin de contrôler le flux du liquide caloporteur.  The pump increases its flow rate to limit the heat transfer fluid temperature below the critical temperatures (210 ° C) at the exit of the panel. The bitumen storage tanks are equipped with exchangers (4) connected to the circuit for transmitting heat to the bitumen. Valves (5) are arranged to control the flow of the coolant.
Une vase d'expansion (6) maintien la pression dans le circuit à des niveaux acceptables et compense les variations de volume.  An expansion vessel (6) maintains the pressure in the circuit at acceptable levels and compensates for changes in volume.
La figure 1 fournit une représentation du système.  Figure 1 provides a representation of the system.

Claims

Revendications  claims
1- Un système de maintien de température du bitume caractérisé par l'utilisation de capteurs solaires (1) reliés aux bacs de stockage du bitume (3) par un circuit hydraulique contenant un liquide caloporteur circulant grâce à une pompe (2). Un échangeur (4) est installé dans chaque bac de stockage pour transmettre l'énergie thermique du liquide caloporteur au bitume. Une vase d'expansion (6) est reliée au circuit hydraulique ainsi que des valves (5) de régulation du flux.  1- A bitumen temperature maintenance system characterized by the use of solar collectors (1) connected to bitumen storage tanks (3) by a hydraulic circuit containing a coolant circulating through a pump (2). An exchanger (4) is installed in each storage tank to transmit the heat energy of the coolant to the bitumen. An expansion vessel (6) is connected to the hydraulic circuit as well as flow control valves (5).
2- Un système de maintien de température du bitume selon la revendication 1 caractérisé par une chaudière (7) qui est reliée au circuit hydraulique dont la circulation est assurée par une deuxième pompe (2).  2- A bitumen temperature maintenance system according to claim 1 characterized by a boiler (7) which is connected to the hydraulic circuit whose circulation is provided by a second pump (2).
PCT/MA2014/000054 2014-10-10 2014-12-12 Continuous heating of a store of bitumen by high-energy solar panels WO2016056880A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MA37414 2014-10-10
MA37414A MA37414A1 (en) 2014-10-10 2014-10-10 Maintain heat storage of bitumen by high-energy solar panels

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112342866A (en) * 2020-12-06 2021-02-09 河南九一环保科技股份有限公司 Asphalt processing method by utilizing solar energy for heating

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4299199A (en) * 1978-03-29 1981-11-10 Process Engineering Incorporated Methods of and apparatus for heating fluid materials
US20110247525A1 (en) * 2008-12-19 2011-10-13 Claudio Macedo Nasser Method and plant for preparing hot-mix asphalt

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299199A (en) * 1978-03-29 1981-11-10 Process Engineering Incorporated Methods of and apparatus for heating fluid materials
US20110247525A1 (en) * 2008-12-19 2011-10-13 Claudio Macedo Nasser Method and plant for preparing hot-mix asphalt

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HENDERSON J B ET AL: "Use of solar energy for heating asphalt in storage tanks", APPLIED ENERGY, ELSEVIER SCIENCE PUBLISHERS, GB, vol. 7, no. 1-3, 1 November 1980 (1980-11-01), pages 221 - 228, XP025635451, ISSN: 0306-2619, [retrieved on 19801101], DOI: 10.1016/0306-2619(80)90061-6 *
LUMINOSU ET AL: "SOLAR EQUIPMENT FOR PREHEATING BITUMEN", THERMAL SCIENCE, vol. 11, no. 1, 2007, Belgrade, pages 127 - 136, XP002739525, DOI: 10.2298/TSCI0701127L *
OFFICE FÉDÉRAL DE L'ÉNERGIE OFEN: "Projet pilote de maintien en chauffe d'un stockage de 80000 litres de bitume à 160° par des panneaux solaires haute énergie", 1 December 2011 (2011-12-01), XP002739524, Retrieved from the Internet <URL:http://www.bfe.admin.ch/php/modules/enet/streamfile.php?file=000000010792.pdf&name=000000290572> [retrieved on 20150512] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112342866A (en) * 2020-12-06 2021-02-09 河南九一环保科技股份有限公司 Asphalt processing method by utilizing solar energy for heating

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