A process for upgrading asphalt with electric tracing heating and maintaining temperature in the retention tower
A technology of modified asphalt and electric heating belt, which is applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, processing of tar asphalt/petroleum asphalt/natural asphalt, tar processing, etc. Temperature above 375°C and other problems, to achieve obvious energy saving effect and stable quality
Active Publication Date: 2017-04-05
HENAN KAITAN NEW MATERIAL +1
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Problems solved by technology
After heat exchange, the asphalt is directly transported to the asphalt storage tank by the pump. The mass transfer process is accompanied by heat loss, and the storage period is also accompanied by the heat transfer process with the air. The asphalt is heated by steam during the transmission and standing process. This heating maintains the temperature. It is difficult to meet the requirement of asphalt to maintain a temperature above 375°C
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[0020] As shown in the figure: a process for modifying asphalt with electric tracing heating and maintaining temperature in the retention tower, including the following steps:
[0021] 1) Take out the raw material tar from the raw material tar storage tank 1 and mix it with a solvent to mix it evenly. The homogenized tar is sent to the super centrifuge through the dehydration and deslagging pump to separate the light and heavy components. The separated light and heavy components enter the Light component storage tank 10 and heavy component storage tank 11;
[0022] The solvent in step 1) is light oil, washing oil or a mixed solvent of light oil and washing oil in any ratio, and the amount of solvent added is 15%-20% of the weight of the raw tar. The centrifugal force during centrifugation is 3000G, and the centrifugation is 1-5min. The quinoline-insoluble content of the heavy component tar after centrifugal separation of the raw material tar is greater than 1%, and the quinol...
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The invention relates to a technology for modifying pitch by a retention tower adopting electric tracing heating at a constant temperature. The production technology is a single heating production technology. Only one tube furnace is used for heating in a technological process, and therefore, the energy-saving effect is obvious; and the pitch retention tower adopts electric tracing heating so that the temperature of the pitch retention tower can be above 375 DEG C all the time in the process of pitch conveying and stirring thermal polymerization, and a stable heating condition required for pitch thermal polymerization is ensured, thus obtaining the modified pitch product with stable quality.
Description
technical field [0001] The invention relates to the technical field of modified asphalt production, in particular to a process for modifying asphalt with electric tracing heating and maintaining temperature in a retention tower. Background technique [0002] Hard asphalt and modified asphalt are made from medium temperature asphalt after corresponding treatment. The production methods of modified asphalt using asphalt as raw material mainly include oxidative thermal polymerization, atmospheric pressure thermal polymerization, pressurized thermal polymerization, vacuum flash evaporation, etc. After heat exchange, the asphalt is directly transported to the asphalt storage tank by the pump. The mass transfer process is accompanied by heat loss, and the storage period is also accompanied by the heat transfer process with the air. The asphalt is heated by steam during the transmission and standing process. This heating maintains the temperature. It is difficult to meet the requi...
Claims
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IPC IPC(8): C10C1/00C10C1/18C10C1/16C10C3/00
CPCC10C3/00C10C3/002C10C3/02C10C3/06C10C3/08
Inventor 李毛李广民艾护民周云辉赵斌
Owner HENAN KAITAN NEW MATERIAL