Absorbent for removing non-methane hydrocarbons and preparation method of absorbent

Abstract

The invention discloses an absorbent for removing non-methane hydrocarbons and a preparation method of the absorbent. The absorbent is prepared from raw materials in percentage by mass as follows: 1.8% of Span 80, 7.2% of Tween 80, 3% of n-butyl alcohol, 1% of glycerin, 20% of biodiesel and 67% of water. The preparation method of the absorbent comprises steps as follows: the raw materials in percentage by mass are weighed; a surfactant, n-butyl alcohol, the glycerin, the biodiesel and the water are sequentially added while stirring. The absorbent has the benefits as follows: the cost for removing the non-methane hydrocarbons is low, thorough up-to-standard emission can be guaranteed on the basis that the treatment ratio is 70% or above, equipment is not corroded, and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to an absorbent for removing non-methane total hydrocarbons and a preparation method thereof. Background technique [0002] The treatment methods of non-methane total hydrocarbon waste gas that have been applied and are being developed include activated carbon adsorption method, membrane separation method, photolysis catalytic method, waste gas incineration method, water spray method, plasma decomposition method, solvent absorption method, etc. The principle of the solution absorption method is to separate the components according to the principle of similar compatibility, that is, the difference of the different components of the mixed gas in the absorption liquid. It is an empirical law in the dissolution properties of substances. Its essence is that the force between particles with similar structures is stronger than the force between particles with completely diffe...

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Problems solved by technology

[0003] At the end of the 1970s in China, the absorption liquid mainly composed of diesel oil and engine oil was used to purify non-methane total hydrocarbon exhaust gas, and it was practically applied in engineering. However, due to the increasing price of diesel oil, flammable and volatile caused secondary Pollution

The price of pure organic solvents is relatively expensive, and the absorption effect is not necessarily better than that of excellent water-based absorbents. Organic solvents themselves may cause new environmental and safety problems during use, which also limits their industrial applications.

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