阿布森法瀝青回收儀是用在是利用旋轉蒸發(fā)器法從石油瀝青混合料中回收瀝青，對瀝青路面或瀝青混合料用溶液抽提，再將抽提液中的溶劑去掉，且在操作過(guò)程中不改變混合料中瀝青的性質(zhì)。
Absen method is used to recover asphalt from petroleum asphalt mixture by rotary evaporator method, extract the asphalt pavement or asphalt mixture solution, and then remove the solvent in the extraction solution. It does not change the properties of the asphalt in the mixture.
阿布森法瀝青回收儀主要技術(shù)指標：
★旋轉瓶容量：1000ml
★接受瓶容量：1000ml
★控溫范圍：室溫-99℃
★旋轉速度；0-150r/min
★功率：1000w
★電源：220v/50HZ
Main technical indicators of Absen's Asphalt Recovery Instrument:
★ Rotary bottle capacity: 1000ml
★ Acceptable bottle capacity: 1000ml
★ Temperature control range: room temperature -99 ℃
★ Rotation speed; 0-150r / min
★ Power: 1000w
★ Power supply: 220v / 50HZ
阿布森法瀝青回收儀安裝步驟：
★開(kāi)箱按裝箱單清點(diǎn)，擦洗烘干玻璃器件。安裝左側主機體，右側水槽箱。將四通球的陽(yáng)磨口插入機頭左側四氟連接管內，插緊來(lái)回動(dòng)一下使之密和。
★將機頭右側的黑色鎖緊螺帽擰下，將螺紋玻璃接頭的法蘭口處套入，然后將黑色鎖緊螺帽擰在機頭上，要平整擰緊。
★收集瓶套在冷凝管的球磨口上，用夾子夾牢。
★進(jìn)出水口用皮管相連。把進(jìn)水口接在自來(lái)水上，把出水口放到下水道里。
★將真空泵的抽氣口連到冷凝器的真空口，另一個(gè)端口連到水浴鍋的真空表接口。
★將二氧化碳氣體連到流量計的一端，然后把流量計的另一端連到進(jìn)料器口上。
Installation steps of Absen's Asphalt Recovery Instrument:
★ Inventory according to the packing list, scrub glass components. Install the left main body and the right water tank. Insert the male grinding mouth of the four-way ball into the PTFE connection tube on the left side of the machine head, and insert it tightly to make it close.
★ Unscrew the black lock nut on the right side of the machine head, insert the flange mouth of the threaded glass joint, and then screw the black lock nut on the machine head, and tighten it flat.
★ The collection bottle is placed on the ball mill of the condensation tube and clamped with a clip.
★ The water inlet and outlet are connected by a leather tube. Connect the water inlet to the tap water and put the water outlet into the sewer.
★ Connect the suction port of the vacuum pump to the vacuum port of the condenser, and connect the other port to the vacuum meter interface of the water bath.
Connect the carbon dioxide gas to one end of the flowmeter, and then connect the other end of the flowmeter to the feeder port.
阿布森法瀝青回收儀操作規程：
準備工作
★ 準備瀝青混合料試樣，一次用量應預計可獲得回收瀝青試樣80g~120g，不足瀝青試驗項目需要時(shí)可分次回收后混合使用。瀝青混合料若是從路上鉆取的試樣，宜用電風(fēng)扇吹干水分后再用微波爐或烘箱內加熱，使成松散狀態(tài)，但加熱溫度不得超過(guò)100℃，從開(kāi)始加熱至試樣松散的試件不得超過(guò)30min。
★ 按本規程規定的方法測定瀝青混合料密度及空隙率等各項物理指標。
★按本規程方法將瀝青混合料用離心法抽提出瀝青溶液，至抽提液達澄清透明為止
★將全部瀝青抽提液分次裝入離心管中，用高速離心分離法清除抽提液中的礦粉部分，施加離心力770G以上，離心分離的時(shí)間不少于30min。
★將干凈的抽提液取出一部分置減壓過(guò)濾器的濾紙上過(guò)濾，一邊抽氣一邊向濾紙上加新的三氯乙烯溶液洗凈。仔細觀(guān)察濾紙上還有沒(méi)有礦粉顆粒，檢驗高速離心分離法清除礦粉是否干凈。如有應重復上述的步驟延長(cháng)分離時(shí)間，直至確認抽提液中沒(méi)有礦粉為止。
★將旋轉蒸餾回收裝置接妥，接頭均應密封，不漏氣。
★ 將加熱裝置的油浴調節至50℃±5℃。
★ 將瀝青抽提液全部（約350mL~400mL）裝入潔凈的1000mL旋轉燒瓶中，用少量溶劑清洗后也并入瓶中。
★開(kāi)動(dòng)真空泵或抽氣機，使整個(gè)系統形成負壓，真空度97.4kPa（719mmHg）以下。
★開(kāi)動(dòng)旋轉燒瓶，在不浸入加熱油浴的狀態(tài)下，以約50r／min的速度旋轉5min~10min。
★在保持上述速度旋轉的狀態(tài)下，緩慢地將旋轉燒瓶底部浸入已達50℃±5℃的油浴中，燒瓶?jì)鹊娜軇╅_(kāi)始蒸發(fā)，當冷凝裝置冷卻的溶液流入溶劑回收燒瓶達到穩定狀態(tài)后，逐漸增加旋轉速度。并增大旋轉燒瓶浸入油浴的加熱面積，加快蒸餾速度。直至無(wú)溶劑汽凝回收時(shí)，蒸餾結果，將旋轉速度降低至20r／min。
★旋轉燒瓶繼續保持旋轉狀態(tài)，同時(shí)將油浴升溫，在15min內上升至155℃±2℃，再在此狀態(tài)下保持15min，然后開(kāi)放CO2閥門(mén)，以1000mL／min的流速通過(guò)2min。
★關(guān)閉CO2閥門(mén)，逐漸使旋轉瓶?jì)然謴椭脸?，停止旋轉燒瓶旋轉，離開(kāi)油浴，拆開(kāi)裝置。
★迅速倒出燒瓶?jì)鹊臍埩魹r青，進(jìn)行回收瀝青的各項試驗。
★對回收瀝青進(jìn)行粘度、針入度、軟化點(diǎn)、組分分析等各項試驗方法與原樣瀝青的試驗方法相同。
Abson method asphalt recovery instrument operating procedures:
Ready to work
★ Prepare asphalt mixture samples. 80g ~ 120g of recycled asphalt samples should be obtained at one time. If it is less than that required for the asphalt test project, it can be recycled and used in stages. If the asphalt mixture is a sample drilled from the road, it should be dried with an electric fan and then heated in a microwave oven or an oven to make it loose, but the heating temperature should not exceed 100 ° C. The pieces must not exceed 30min.
★ Measure various physical indexes such as density and porosity of asphalt mixture according to the method specified in this regulation.
★ Asphalt mixture is extracted by centrifugation according to the method of this procedure until the extraction solution is clear and transparent.
★ Put all the bitumen extraction solution into the centrifugation tube, remove the mineral powder part of the extraction solution by high-speed centrifugal separation method, apply centrifugal force above 770G, and centrifuge for not less than 30min.
★ Take out a part of the clean extraction solution and place it on the filter paper of the decompression filter, and add a new trichloroethylene solution to the filter paper while pumping. Carefully observe whether there are any mineral powder particles on the filter paper, and check whether the high-speed centrifugation method removes the mineral powder. If necessary, repeat the above steps to extend the separation time until it is confirmed that there is no mineral powder in the extract.
★ Connect the rotary distillation recovery device, and the joints should be sealed to prevent air leakage.
★ Adjust the oil bath of the heating device to 50 ℃ ± 5 ℃.
★ Put all the bitumen extraction solution (about 350mL ~ 400mL) into a clean 1000mL rotary flask. After washing with a small amount of solvent, it is incorporated into the bottle.
★ Operate the vacuum pump or air extractor to make the whole system negative pressure, and the vacuum degree is below 97.4kPa (719mmHg).
★ Start the rotating flask and rotate it for 5min ~ 10min at a speed of about 50r / min without immersing in the heating oil bath.
★ While maintaining the above speed, slowly immerse the bottom of the rotating flask in an oil bath that has reached 50 ° C ± 5 ° C. The solvent in the flask begins to evaporate. When the solution cooled by the condensation device flows into the solvent recovery flask and reaches a stable state , And gradually increase the rotation speed. And increase the heating area of the rotary flask immersed in the oil bath to speed up the distillation speed. Until the solvent-free condensation is recovered, as a result of the distillation, the rotation speed is reduced to 20 r / min.
★ The rotating flask continued to maintain the rotating state, and the oil bath was heated up, and it was raised to 155 ° C ± 2 ° C within 15 minutes, and then maintained in this state for 15 minutes, and then the CO2 valve was opened and passed at a flow rate of 1000 mL / min for 2 minutes.
★ Close the CO2 valve, gradually return the inside of the rotary bottle to normal pressure, stop the rotary flask from rotating, leave the oil bath, and disassemble the device.
★ Quickly pour out the residual asphalt in the flask and carry out various tests for recovering the asphalt.
★ The test methods for viscosity, penetration, softening point, and component analysis of the recovered asphalt are the same as those for the original asphalt.
