• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    The invention relates to a method for carbon-neutral drying and heating of ballast (rock crushing products) for asphalt mass production consisting of the following sub-processes in order: 0 Production of flue gases in a combustion boiler for biofuel 0 Drying and heating of asphalt ballast by means of flue gases in traps. The drying and heating takes place in fractions. 0 Flue gas condensation / energy recovery in tube heat exchangers or similar to achieve high efficiency. 0 Storage of heated asphalt ballast in heat-insulated silo. A silo for each ballast type / fraction. Weighing of asphalt ballast, according to asphalt recipe, in trolley on rails during ballast silos. The trolley fills the mixer with one batch (2.5-3.5 tons) at a time. The trolley can be driven with wires or as a "roller coaster".
    公开号:SE1100567A1
    申请号:SE1100567
    申请日:2011-07-28
    公开日:2013-01-29
    发明作者:Leif Igelhed
    申请人:Leif Igelhed Easy Line Konsult；
    IPC主号:
    专利说明:

    Carbon dioxide-neutral asphalt plant, N00O2 - line Problems in conventional asphalt plants, which the invention solves Problem 1. Carbon dioxide emissions from combustion of fuel oil, 2. High energy consumption and high power requirements Asphalt pulp consists mainly of 2 ingredients - ballast (rock crusher mtrl) and binder. The entire manufacturing process, which mainly consists of partly ballast handling and partly mixing of the asphalt mass, is coherent in the conventional asphalt plant.
    Finished asphalt mass should have a temperature of about 160 degrees.
    When the temperature drops, the mass becomes more responsive when laying on the road.
    The conventional asphalt plant adopts a slightly inclined and rotating drum for heating the ballast. The length of the drum is 8-9 m and the diameter is about 2 m.
    Asphalt plants can produce spirit up to 200 tons / hour. A high power is required - breath up to 15 MW. The main energy source is heating oil. LPG or natural gas is used on a relatively small scale. In the finished asphalt mass, the ballast contains 31.3 kWh / ton asphalt mass (bitumen is delivered to the plant at full temperature). Approximately 6 liters (up to 7 liters) of fuel oil / tonne of pulp are consumed, which is approximately 60 kWh. It gives an efficiency of about 52%. With this background, it is easy to understand that it is black to change the heating oil to biofuel.
    Solution: Biofuel consisting of traflis, (all logs, forest waste or straw) is fired in a boiler for the production of flue gases. The shaving gases are fed into a stair-grate furnace. The principle is a staircase where every other step rotates relatively slowly back and forth and thus feeds the ballast. The rich gases are let in under the stairs. The steps are hot and function as a frying table. At the bottom of the set steps there is a lock that relaxes again = the shaving gases but kite ballast.
    The ballast handling is divided from the asphalt mass mixture itself, as normal; Agar 8 hours / day. Ballast handling can thus p5g5 for 24 hours / day - energy and power requirements are thus considerably less.
    Large heat-insulated hot-ballast silos - smaller energy losses Flue gas condensation with energy recovery gives less power requirements An efficiency of approx. 80% is estimated to be achieved, which meant a need for 39 kWh. The power requirement approx. 2 MW - 2 chip combustion boilers each 1 MW Problem 3. Excess production of certain types of ballast of the raw material rock and energy) Some part (10-15%) of the stone flour 61 (0-2mm or 0-4mm), which is produced during crushing and sorting / screening, there is no provision for, due to the fact that in the rotating drum both crushing and grinding of the ballast - which creates more stone flour.
    Loading: The ballast is dried and heated in an oven consisting of stair grills. The principle is a staircase where every other stay moves relatively slowly back and forth and armed feeds the ballast in a gentle way. The ballast neither crushed nor ground retains its original 'shape and grain size distribution.
    Problem Investment cost, maintenance and electricity energy access for "Cold dosing" (pockets for different types of ballast / fractions), Now it may be necessary to make an attempt to explain why there is a cold dosing. The cold dosing discharges different types of ballast in different quantities on a belt which then transports to the drying drum, which not only dries, but also heats up to the required temperature, given the requirement for different types of asphalt mass and that the laying should work smoothly. At the beginning of the time for asphalt plants, greater accuracy was probably not required than what could be achieved with the variable discharge from the respective ballast pocket. The aggregate was then mixed with binder (about 5%) in a mixer approximately as a forced mixer type concrete mixer. Modern asphalt mixers have shovels on horizontal axes.
    PS Recently, many different types of asphalt masses have been developed. During a production day, many types of pulp are produced, which requires the possibility of other weighings in accordance with the various recipes. This then quickly leads to the ballast having to be sorted (sieved) again, after drying and heating. In connection with the screening, resp., Fraction to resp. pocket s.k. hot stone pockets. These pockets are then weighed according to the recipe for resp. asphalt mass type. The feed during resp. pocket in the cold dosage, is adjusted partly with regard to the different types of pulp and partly so that an even level is obtained between the hot stone pockets. This in turn means that the composition of the ballast, which is fed over the screen deck, varies all the time. The sight deck gives varying outcomes depending on the ballast composition. The result is that the content in resp. hot stone pocket varies.
    Solution: Different ballast fractions are fed into the furnace periodically. The furnace is gentle on the ballast, which means that the grain size distribution is maintained. The fractions are transported to resp. silo. The fractions are kept separate at all times.
    Problem The high power in the drying drum, gives high flue gas velocities, which in turn leads to fine particles (filler), which are formed when the ballast is notched during the rotation, Miles with the flue gases.P5 because of this a filter is required.
    Unloading: The ballast is dried and heated in a stair-roasting oven (see function above). The flue gases have a relative I5g velocity and pass several layers of ballast where any fine particles are captured and thus all fine particles remain in the ballast.
    Problem Investment cost, maintenance511 and electrical energy ratios for filters and silos for fillers Solution: The stair roster oven is gentle on the ballast - filler is not formed Problem Investment cost, maintenance511 and electrical energy access for the screen deck (sorts the ballast due to mixing and change in shape and shape ) Unloading: The ballast is fed through the gentle (neither wet nor mainirig) stair grating furnace, a fraction in sand and then stored in a separate silo for each fraction.
    • Problem Cost for quality deduction on the finished asphalt mass - when it does not meet standard requirements. Weighing recipes are adjusted based on samples of finished asphalt mass. There are no possibilities, in the conventional asphalt plant, to have sufficient control, p5 the ballast fractions (in hot stone pockets), which should be included in the asphalt mass. Usually 1-2 samples are performed per Sr p5 grain size distribution in the hot stone pockets. In addition, the outcome of the screening (before the hot stone pockets) varies, depending on the type of asphalt mass produced and there can be many varieties in one day. The variation in the outcome depends on the variation in the ballast composition. As I said, the feed is also adjusted in the cold dosage so that an even level is obtained between the different hot stone pockets. See also section 4.
    Unloading: The weigh-in takes place from a ballast, which has undergone a frequent laboratory inspection. The weigh-in recipes are created with the help of a sophisticated proportioning program. This meant that the quality of the asphalt mass was sacred to the mixture.
    Problem Cost for machinists - one or two machinists required for the present The production consists of processes, which need some supervision. The data control of the processes also requires some monitoring Solution: The simplicity of the process is that it is easy to automate.
    Problem The production cost for 3-stage crushed ballast (short fractions) is higher than for 2-stage crushed ballast - long fractions (ex. 0-8, 0-16, 0-32) Weighing recipes take place as stated above based on samples of finished pulp and experience and it becomes d5 far complicated to utg5 frail long fractions such as. 0-16.
    Solution: the particle size distribution of the hot ballast remains the same as when it was fed into the furnace, which means that a proportioning program can now be used, which in turn entails the possibility of starting Iran 2-stage crushed (ex. 0 -16, 0-35) ballast and only adjust the curve with minor amounts of certain 3-stage crushed (eg 2-4, 4-8, 8-11, 11-16, 11-22 etc) ballast types.
    Appendices: Total production of asphalt pulp in Sweden Picture of a conventional asphalt plant Sketch of a carbon dioxide-neutral asphalt plant COMPARISON of asphalt plants; processes, energy Orebro 2011-07-19Leif lgelhed Total production of asphalt pulp in Sweden7,000,000 tonnes of which Skanska approx. 2,000,000 tonnes of which NCC approx. 2,000,000 tonnes other companies3,000,000 tonnes The ballast to the asphalt pulp is dried and heated (to approx. 160 gr) in a rotating drum, which has an EO unit in one breath Access of heating oil approx. 6 liters / ton kWh / liter 42,000 m3 for the whole of Sweden CO2 emissions 0.324 kg / kWh 136 080 000 kg CO2 136 080 tons CO2 lgelhed Stuffed stones are sorted Ateranvand asphalt Bitumentank Asfattfickol, z Fillersitos; Sight Asphalt plant Batch mixer Stone pockets or Filter Fire oil tank Maneuvering cabin Carbon dioxide-neutral asphalt plant -
    权利要求:
    Claims (2)
    [1]
    1. Production of non-slip stops from previous stone flourSurplus purchase of fillers Nublsarad 0-16 (saurus) ban vans grand afIllgare with
    [2]
    2nd-stage crushed ballast fill approx. 60% ballast Conventional Energy cold: Fuel oil3.24 kg CO2 / liter Cold dosesEating out flora varieties together, Quantities depend on the type of mass produced Produced Grain size Hiandra's COMPARISON of asphalt plant - energy Atangal of liter oil / fuel plant ton The ballast in the finished asphalt mass contains 31.3 kWh / ton This gives an efficiency of 52% Flue gas condensation can increase the efficiency to 80% This means an energy requirement of only 39.1 kWh / ton lgelhed Patent requirements Method for carbon-neutral drying and heating of ballast (rock crushing products) . Sub-processes in sequence: Production of flue gases in the combustion boiler for biofuels. Drying and heating of asphalt ballast with the help of flue gases in the stairwell or similar. The drying and heating takes place in fractions. Flue gas condensation / energy Recovery in tube heat exchangers or similar to achieve high efficiency. Storage of heated asphalt ballast in heat-insulated silo. A silo father habit ballast black / fraction. Weighing of asphalt ballast, according to asphalt recipe, in wagon pS rals during ballast silos. The trolley fills the p5 mixer with a batch (2.5-3.5 tons) St & again. The trolley can be driven with wires or as a "roller coaster". The mixing of the asphalt mass and subsequent storage takes place in a conventional manner and is therefore not included in the claims. Orebro 2011-07-27 Leif lgelhed
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    同族专利:
    公开号 | 公开日
    SE537657C2|2015-09-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1100567A|SE537657C2|2011-07-28|2011-07-28|Method for drying and heating ballast in a carbon dioxide neutral asphalt plant|SE1100567A| SE537657C2|2011-07-28|2011-07-28|Method for drying and heating ballast in a carbon dioxide neutral asphalt plant|
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