Recovery system and method for escaping flue gas in liquid asphalt loading process

Abstract

The invention provides a special recovery system and method for escaping flue gas in a liquid asphalt loading process. High-temperature liquid asphalt flue gas passes through a buffer tank, an absorption tower, a coalescer and an adsorption tank, and liquid-phase recovery of organic matters contained in the asphalt flue gas is completed through absorption mass transfer, gas-liquid separation and adsorption trapping. The industrial method not only can effectively solve the problems of adsorption failure and overhigh energy consumption caused by high temperature of flue gas, but also can recycle sulfur-containing, chlorine-containing and other macromolecular organic matters which are easy to block and solidify through an effective absorption method, so that downstream process equipment and materials are effectively protected, the process route of flue gas treatment is shortened, the asphalt flue gas treatment cost is reduced, and the continuous up-to-standard emission of the asphalt tail gas can be ensured.

Description

technical field [0001] The invention relates to the technical field of recovery and treatment of high-temperature liquid asphalt flue gas, in particular to a liquid-phase recovery of macromolecular easy-to-solidify asphalt fume that is specifically applied to the loading operation of high-temperature liquid asphalt by adopting solvent absorption and coalescence adsorption processes systems and methods. Background technique [0002] Due to the high freezing point of asphalt, it is necessary to maintain the asphalt above the freezing point when loading the vehicle, and generally maintain the temperature above 80°C. High-temperature liquid asphalt will emit asphalt fume during the loading process. Although the concentration of VOCs in the flue gas is not high, due to irritating organic substances such as sulfur, direct discharge to the atmosphere will not only cause damage to the health of the workers, but also It will also pollute the environment. Due to the high density of ...

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Problems solved by technology

[0006] In view of the characteristics of high temperature, low concentration, high freezing point, sulfur and other toxic elements in the flue gas emitted during the loading process of high-temperature liquid asphalt, as well as the high energy consumption, Easy to block, easy to deactivate, easy to poison and complicated process, etc., the present invention provides a method and system for recovering fugitive flue gas specially used in the liquid asphalt loading process

This method can not only effectively solve the problems of adsorption failure and high energy consumption caused by the high temperature of the flue gas, but also can recycle the sulfur-containing, chlorine-containing and other macromolecular organic substances that are easy to block and solidify through effective absorption methods. Protect downstream process equipment and materials, shorten the process route of flue gas treatment, reduce the cost of asphalt flue gas treatment, and ensure the continuous emission of asphalt tail gas up to the standard

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