Absorbing liquid for treating benzene series organic waste gas and preparation method thereof

Abstract

The invention discloses absorption liquid for treating benzene series organic waste gas and a preparation method of the absorption liquid for treating the benzene series organic waste gas. The absorption liquid is composed of the following raw materials in percentage by mass: 85.6%-97.8% of water, 1.5%-12.5% of carbonate, 0.01%-5% of an addition agent and 0.1%-7% of a dispersant. The preparation method comprises the following steps: dissolving the carbonate into the water according to the mass percent to prepare a solution; and adding the addition agent and the dispersant into the solution to obtain the absorption liquid of the benzene series organic waste gas. The absorption liquid mainly comprises the water, inorganic salt, the addition agent and the dispersant, and has the advantages of wide sources, low price, simplicity in preparation, no corrosion effect on equipment and no secondary pollution; the absorption liquid has the high removing rate on the benzene series organic waste gas with middle and low concentrations and the high removing rate can be more than 75%; the absorption liquid is a water solution of the inorganic salt and has the low viscosity and the small foaming amount; the energy consumption of a circulating pump is low; and meanwhile, wastewater is easy to treat.

Description

technical field [0001] The invention relates to the technical field of industrial waste gas environmental pollution control, in particular to an absorption liquid for treating benzene series organic waste gas and a preparation method thereof. Background technique [0002] Benzene series (such as benzene, toluene, xylene, etc.) as important chemical raw materials or solvents are widely used in pesticides, medicines, fuels, spice production, spray paint, pharmaceuticals and other industries. The vast majority of benzene series are toxic organic compounds, which not only cause air pollution but also cause great harm to the human body when discharged into the air. If benzene enters the body, hematopoietic metabolites can be formed in the hematopoietic tissue itself. Long-term exposure to benzene can cause bone marrow and genetic damage. Blood examination can reveal leukopenia, thrombocytopenia, pancytopenia, aplastic anemia, and even leukemia. Toluene can enter the human body ...

AI Technical Summary

Problems solved by technology

Mineral oil generally has high cost and high viscosity; high-boiling-point organic solvents are likely to cause secondary pollution; water-composite absorbents generally include water-mineral oil, water-surfactant-auxiliary and other absorbents, which are low in cost and Benzene series organic waste gas has a good absorption effect, but the subsequent treatment of the absorption liquid is difficult