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Asphalt pavement hot in-place recycling layered heating method

A technology of asphalt pavement and heating method, which is applied in the direction of roads, roads, road repairs, etc., can solve the problems of energy waste, fugitive emission of waste asphalt smoke, pollution of the environment, etc., achieve energy saving, change the problem of fugitive emission, and simple operation Effect

Active Publication Date: 2016-02-24
嘉鹏精工科技(大连)有限公司
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Problems solved by technology

Moreover, there is the problem of unorganized emission of waste asphalt smoke and dust during the in-situ thermal regeneration process of the existing asphalt pavement, which wastes energy and pollutes the environment

Method used

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  • Asphalt pavement hot in-place recycling layered heating method
  • Asphalt pavement hot in-place recycling layered heating method
  • Asphalt pavement hot in-place recycling layered heating method

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Embodiment Construction

[0020] The invention provides a layered heating method for in-situ thermal regeneration of asphalt pavement. The method adopts the method of layered heating of the recycled mixture, and the heating times can be set according to the heating target temperature. Uniformity, so that the quality of the regenerated pavement can be fully guaranteed. In addition, in the process of heating the recycled materials multiple times, the present invention also recovers the asphalt fume and a large amount of heat generated by heating, and recycles the waste flue gas after burning, and uses it for the heating plate of the regenerator to heat and keep the road surface warm. It has fully changed the problem of unorganized emission of waste asphalt smoke and dust from traditional recycling units, saved energy, and enhanced the competitiveness of independent innovation.

[0021] The present invention will be described in detail below.

[0022] A layered heating method for in-situ thermal regenera...

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Abstract

The present invention discloses an asphalt pavement hot in-place recycling layered heating method comprising the following steps: a pavement recycled material harrowed by heating is collected and mixed with new asphalt to obtain a regenerated mixture; the regenerated mixture is first put into a heating mixing device for the first time heating mixing, and then sent to another heating mixing device for second time heating mixing, the heating mixing is repeated for multiple times until the regenerated mixture is heated from original 70-80 DEG Cto 140-160 DEG C; and the mixed heated regenerated mixture is directly discharged, and received by a followed pavement paver, and the regenerated mixture is paved on a recycled pavement, and finally is compacted by a road roller. The temperature of the regenerated mixture heated by the regenerated mixture layered heating method is raised to 140-160 DEG C, the final paving rolling temperature is enhanced; and asphalt smoke dust and a large quantity of heat generated by the heating are recycled, and waste flue gas is reused after recycling combustion.

Description

technical field [0001] The invention relates to a layered heating method for on-site thermal regeneration of asphalt pavement, which belongs to the field of in-situ thermal regeneration methods of asphalt pavement. Background technique [0002] At present, the hot-in-place pavement recycling machines use horizontal mixing tanks and other equipment to heat and mix the raked recycled materials and new asphalt materials once, and then pave them. Due to the limited heating capacity of equipment such as horizontal mixing tanks, the paving temperature of general pavement regeneration mixing is only 120-130°C, which is lower than the national standard paving temperature of 140-160°C for asphalt mixture. Moreover, there is a problem of unorganized emission of waste asphalt smoke and dust during the in-situ thermal regeneration of the existing asphalt pavement, which wastes energy and pollutes the environment. Contents of the invention [0003] In order to solve the above technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/10
CPCE01C19/1004
Inventor 王志山姜军王志荣韩雪松
Owner 嘉鹏精工科技(大连)有限公司
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