Method and device for purifying asphalt smoke

A technology of asphalt fume and asphalt fume, which is applied in the field of flue gas purification, can solve problems such as failure to meet environmental protection requirements, equipment, pipeline ash clogging, and large dust, so as to improve equipment operation rate, improve production environment, and improve purification efficiency effect

Active Publication Date: 2013-04-10
SHANDONG CHENYANG NEW CARBON MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The disadvantage of the above technology is that due to the unique properties of the asphalt fume itself, such as the characteristics of high viscosity, strong adhesion, large dust, and high temperature, the dust removal effect is not ideal, and it will also cause dust accumulation in equipment and pipelines. If the effect of environmental protection and energy saving is not enough, the environmental protection requirements cannot be met, and it may even cause secondary pollution

Method used

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  • Method and device for purifying asphalt smoke
  • Method and device for purifying asphalt smoke
  • Method and device for purifying asphalt smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] as attached figure 2 As shown, the temperature is 85°C and the dust concentration is 250mg / m 3 Under the action of negative pressure, the asphalt fume first enters the asphalt fume branch pipe 2, and then enters the cold oil collection device 5. In this device, the minimum negative pressure of the flue gas inhalation is 5×10 -5 MPa, the number of layers of the baffle 13 is 8 layers, when the asphalt fume flows through each layer of baffles, the flow velocity drops, and a continuous turbulent vortex is generated, thereby reducing the temperature of the high-temperature asphalt fume to 20 -30°C, let part of the soot settle, and finally flow to the discharge port at the bottom of the cone through the oil leakage ports of each layer and enter the asphalt storage tank 6; then, the low-temperature asphalt fume discharged from the asphalt fume outlet 16 of the cold oil collection device Mix with solid adsorbent petroleum coke powder from high-pressure fan 3, wherein the tota...

Embodiment 2

[0048] as attached figure 2 As shown, the temperature is 50°C and the dust concentration is 350mg / m 3 Under the action of negative pressure, the asphalt fume first enters the asphalt fume branch pipe 2, and then enters the cold oil collection device 5. In this device, the minimum negative pressure of the flue gas inhalation is 3×10 -5 MPa, the number of layers of the baffle 13 is 5 layers, when the asphalt fume flows through each layer of baffles, the flow velocity drops, and a continuous turbulent vortex is generated, so that the temperature of the high-temperature asphalt fume drops to 20 -30°C, let part of the soot settle, and finally flow to the discharge port at the bottom of the cone through the oil leakage ports of each layer and enter the asphalt storage tank 6; then, the low-temperature asphalt fume discharged from the asphalt fume outlet 16 of the cold oil collection device Mix with solid adsorbent petroleum coke powder from high-pressure fan 3, wherein the total a...

Embodiment 3

[0054] as attached figure 2 As shown, the temperature is 65°C and the dust concentration is 300mg / m 3 Under the action of negative pressure, the asphalt fume first enters the asphalt fume branch pipe 2, and then enters the cold oil collection device 5. In this device, the minimum negative pressure of the smoke inhalation is 4×10 -5 MPa, the number of layers of the baffle 13 is 7 layers, when the asphalt fume flows through each layer of baffles, the flow velocity drops, and a continuous turbulent vortex is generated, thereby reducing the temperature of the high-temperature asphalt fume to 20 -30°C, and let part of the oil settle, and finally flow to the discharge port at the bottom of the cone and enter the asphalt storage tank 6 through the oil leakage ports of each layer; then, the low-temperature asphalt fume discharged from the asphalt fume outlet 16 of the cold oil collection The air is mixed with the solid adsorbent petroleum coke powder from the high-pressure fan 3, wh...

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Abstract

The invention relates to a purification method for asphalt smoke and a device system for implementing the purification method. The purification method comprises the following steps: (1), performing condensing pretreatment; (2), performing absorption treatment; (3), removing dust and filtering; and (4), recycling the asphalt smoke. The device system comprises a dust-collecting main pipe, an asphalt smoke branched pipe, a high pressure fan, a powder feeding storehouse, a circulating storehouse, a dust collector and an induced draft fan, wherein a cold oil collecting device is mounted between the asphalt smoke branched pipe and the dust-collecting main pipe. According to the invention, the problems of low asphalt smoke dust trapping efficiency and blockage of equipment and pipelines caused by dust accumulation which are difficult to solve by the conventional absorption and purification technology are solved by a condensing pretreatment technology; the service life of the equipment is prolonged; the running rate of the equipment is increased; energy is saved and consumption is reduced; the purification efficiency of the smoke is further improved; separation, collection and recycling of the smoke dust are realized in a closed loop circulation structure; the production environment is improved; and the effects of environmental friendliness, energy conservation and low carbon of the production process are achieved.

Description

technical field [0001] The invention relates to the field of flue gas purification, in particular to a method for purifying asphalt fume and a device system for implementing the purification method. Background technique [0002] A large amount of pitch fumes are generated during the production of carbon green anodes. Asphalt flue gas mainly contains aromatic hydrocarbons, a small amount of straight-chain hydrocarbons and water vapor. It contains carcinogens such as 3,4-benzopyrene, which directly emits large air pollution and heavy odor, so it must be purified and discharged to meet standards. [0003] At present, the purification methods of asphalt flue gas at home and abroad mainly include incineration method, electrostatic capture method, absorption purification method and adsorption purification method. [0004] The incineration method is to contact and burn the combustible substances contained in the asphalt smoke with air at a certain temperature. Yang Shi, Ning Deyu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00
Inventor 刘春龙张斌谭芝波
Owner SHANDONG CHENYANG NEW CARBON MATERIALS
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