Asphalt foam warm mixing system and asphalt foam warm mixing process

Abstract

The invention provides an asphalt foam warm mixing system and an asphalt foam warm mixing process. The asphalt foam warm mixing system comprises a water metering device, a foam stabilizer adding device, an asphalt metering device and a foaming pipe. The water metering device comprises a water tank, a water pump and a water flow meter; the water tank, the water pump and the water flow meter are connected into the foaming pipe by pipelines; the foam stabilizer adding device comprises a foam stabilizer storage tank, a foam stabilizer pump and a foam stabilizer flow meter; the foam stabilizer storage tank, the foam stabilizer pump and the foam stabilizer flow meter are connected into the foaming pipe by pipelines; the asphalt metering device comprises an asphalt tank, an asphalt pump and an asphalt flow meter; the asphalt tank, the asphalt pump and the asphalt flow meter are connected into the foaming pipe by pipelines. According to the technical scheme, the asphalt foam warm mixing systemand the asphalt foam warm mixing process have the advantages that foam stabilizers can be automatically added into the asphalt foam warm mixing system; the corresponding flow control meters are addedto various portions in the asphalt foam warm mixing system, accordingly, the addition proportions of various raw materials can be accurately controlled during asphalt foam warm mixing, good asphalt foam warm mixing effects can be realized by the aid of the asphalt foam warm mixing system and the asphalt foam warm mixing process, and foam asphalt prepared by the aid of the asphalt foam warm mixingsystem and the asphalt foam warm mixing process is stable in performance.

Description

technical field

[0001] The invention relates to the technical field of asphalt, in particular to an asphalt foam warm mixing system and a foam warm mixing process. Background technique

[0002] The production of asphalt concrete is an industry with high energy consumption and high emission. With the government's increasingly stringent environmental protection policies, the asphalt concrete mixing equipment manufacturing industry has encountered great challenges and opportunities.

[0003] The traditional hot-mix asphalt concrete production process is to heat the aggregate to a higher temperature, then mix and coat with asphalt, and finally use it for construction. In order to reduce energy consumption and emissions, warm-mix asphalt concrete technology and cold-mix asphalt concrete technology have emerged in the industry, and warm-mix asphalt concrete is close to traditional hot-mix asphalt concrete because of its road performance, and the energy consumption and emissions in...

Examples

Embodiment 1

[0068] 1. Preparation of foam stabilizer:

[0069] 4 parts of 1-N-hydroxyethyl-2-alkyl imidazoline quaternary ammonium salt, 3 parts of cracked asphalt emulsifier, 11 parts of NaHCO 3 Powder, 5 parts of acetone and 3 parts of triacetin are stirred and mixed, and put into the foam stabilizer storage tank;

[0070] 2. Asphalt foam warm mixing process

[0071] S100. Add 85 parts of pitch and carbon residue to the pitch tank, and stir at 100°C for 35 minutes;

[0072] S200, continue to stir the asphalt in the asphalt tank, heat the temperature to 130°C, add 10 parts of industrial gelatin and 9 parts of liquid nitrile rubber into the asphalt tank, and stir for 30 minutes to form a mixture;

[0073] S300. After passing the mixture in the asphalt tank into the foaming pipe, add water with 0.9% of the weight of the mixture from the water tank to the foaming pipe, and add a foam stabilizer with 0.5% of the weight of the asphalt within 5s to perform mixing and foaming;

[0074] S400,...

Embodiment 2

[0076] 1. Preparation of foam stabilizer:

[0077] 9 parts of 1-N-hydroxyethyl-2-alkyl imidazoline quaternary ammonium salt, 7 parts of cracked asphalt emulsifier, 15 parts of NaHCO 3 Powder, after stirring and mixing 7 parts of acetone and 5 parts of triacetin, put it in the foam stabilizer storage tank;

[0078] 2. Asphalt foam warm mixing process

[0079] S100. Add 120 parts of pitch and carbon residue to the pitch tank, and stir at 110°C for 60 minutes;

[0080] S200, continue to stir the asphalt in the asphalt tank, heat the temperature to 140°C, add 15 parts of industrial gelatin and 13 parts of liquid nitrile rubber into the asphalt tank, and stir for 35 minutes to form a mixture;

[0081] S300. After passing the mixture in the asphalt tank into the foaming tube, stir water and carbon powder according to the weight ratio of 100:1 to form a turbid liquid, add 1% of the mixture weight turbid liquid from the water tank to the foaming tube, and Add a foam stabilizer of 1...

Embodiment 3

[0084] 1. Preparation of foam stabilizer:

[0085] 8 parts of 1-N-hydroxyethyl-2-alkyl imidazoline quaternary ammonium salt, 5 parts of cracked asphalt emulsifier, 12 parts of NaHCO 3 Powder, after stirring and mixing 6 parts of acetone and 4 parts of glycerol triacetate, put into the foam stabilizer storage tank;

[0086] 2. Asphalt foam warm mixing process

[0087] S100. Add 90 parts of pitch and carbon residue to the pitch tank, and stir at 110°C for 65 minutes;

[0088] S200, continue to stir the asphalt in the asphalt tank, heat the temperature to 140°C, add 12 parts of industrial gelatin and 10 parts of liquid nitrile rubber into the asphalt tank, and stir for 40 minutes to form a mixture;

[0089] S300. After passing the mixture in the asphalt tank into the foaming tube, stir water and carbon powder according to the weight ratio of 100:1 to form a turbid liquid, add 1% of the mixture weight turbid liquid from the water tank to the foaming tube, and Add a foam stabilize...

technical field

[0001] The invention relates to the technical field of asphalt, in particular to an asphalt foam warm mixing system and a foam warm mixing process. Background technique

[0002] The production of asphalt concrete is an industry with high energy consumption and high emission. With the government's increasingly stringent environmental protection policies, the asphalt concrete mixing equipment manufacturing industry has encountered great challenges and opportunities.

[0003] The traditional hot-mix asphalt concrete production process is to heat the aggregate to a higher temperature, then mix and coat with asphalt, and finally use it for construction. In order to reduce energy consumption and emissions, warm-mix asphalt concrete technology and cold-mix asphalt concrete technology have emerged in the industry, and warm-mix asphalt concrete is close to traditional hot-mix asphalt concrete because of its road performance, and the energy consumption and emissions in...

Examples

Embodiment 1

[0068] 1. Preparation of foam stabilizer:

[0069] 4 parts of 1-N-hydroxyethyl-2-alkyl imidazoline quaternary ammonium salt, 3 parts of cracked asphalt emulsifier, 11 parts of NaHCO 3 Powder, 5 parts of acetone and 3 parts of triacetin are stirred and mixed, and put into the foam stabilizer storage tank;

[0070] 2. Asphalt foam warm mixing process

[0071] S100. Add 85 parts of pitch and carbon residue to the pitch tank, and stir at 100°C for 35 minutes;

[0072] S200, continue to stir the asphalt in the asphalt tank, heat the temperature to 130°C, add 10 parts of industrial gelatin and 9 parts of liquid nitrile rubber into the asphalt tank, and stir for 30 minutes to form a mixture;

[0073] S300. After passing the mixture in the asphalt tank into the foaming pipe, add water with 0.9% of the weight of the mixture from the water tank to the foaming pipe, and add a foam stabilizer with 0.5% of the weight of the asphalt within 5s to perform mixing and foaming;

[0074] S400,...

Embodiment 2

[0076] 1. Preparation of foam stabilizer:

[0077] 9 parts of 1-N-hydroxyethyl-2-alkyl imidazoline quaternary ammonium salt, 7 parts of cracked asphalt emulsifier, 15 parts of NaHCO 3 Powder, after stirring and mixing 7 parts of acetone and 5 parts of triacetin, put it in the foam stabilizer storage tank;

[0078] 2. Asphalt foam warm mixing process

[0079] S100. Add 120 parts of pitch and carbon residue to the pitch tank, and stir at 110°C for 60 minutes;

[0080] S200, continue to stir the asphalt in the asphalt tank, heat the temperature to 140°C, add 15 parts of industrial gelatin and 13 parts of liquid nitrile rubber into the asphalt tank, and stir for 35 minutes to form a mixture;

[0081] S300. After passing the mixture in the asphalt tank into the foaming tube, stir water and carbon powder according to the weight ratio of 100:1 to form a turbid liquid, add 1% of the mixture weight turbid liquid from the water tank to the foaming tube, and Add a foam stabilizer of 1...

Embodiment 3

[0084] 1. Preparation of foam stabilizer:

[0085] 8 parts of 1-N-hydroxyethyl-2-alkyl imidazoline quaternary ammonium salt, 5 parts of cracked asphalt emulsifier, 12 parts of NaHCO 3 Powder, after stirring and mixing 6 parts of acetone and 4 parts of glycerol triacetate, put into the foam stabilizer storage tank;

[0086] 2. Asphalt foam warm mixing process

[0087] S100. Add 90 parts of pitch and carbon residue to the pitch tank, and stir at 110°C for 65 minutes;

[0088] S200, continue to stir the asphalt in the asphalt tank, heat the temperature to 140°C, add 12 parts of industrial gelatin and 10 parts of liquid nitrile rubber into the asphalt tank, and stir for 40 minutes to form a mixture;

[0089] S300. After passing the mixture in the asphalt tank into the foaming tube, stir water and carbon powder according to the weight ratio of 100:1 to form a turbid liquid, add 1% of the mixture weight turbid liquid from the water tank to the foaming tube, and Add a foam stabilize...

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