Alkaline tower absorption process of rubber production tail gas

Abstract

The invention discloses an alkaline tower absorption process of rubber production tail gas. The alkaline tower absorption process of the rubber production tail gas comprises the following steps of S1, feeding the tail gas into analkaline tower, feeding oxygen, cooling for the first time and recovering waste heat at the same time; S2, respectively carrying out alkaline washing on the tail gas through a primary alkaline washing area and a secondary alkaline washing area; S3, cooling the alkaline washed tail gas for the second time, enabling an alkaline liquor and a benzene condensation liquid to flow to a storage area, feeding the liquid to an extraction area at regular intervals, separating and recovering a super stratum organic phase extracted through the extraction area, delivering a substratum water phase to the primary alkaline washing area through a water pump, and recycling; S4, sequentially carrying out activated carbon adsorption, mixed adsorption and activated aluminium oxide adsorption on the alkaline washed tail gas, drying through calcium chloride, discharging to air, and accomplishing the absorption process of the tail gas. The absorption process provided by the invention has good absorption effect on the rubber production tail gas, high absorption efficiency, environment protection, less alkaline liquor usage, less energy consumption, low treatment cost, high resource utilization degree, stable process, and highrepetition rate.

Description

technical field [0001] The invention relates to the technical field of rubber production, in particular to an alkali washing tower absorption process for rubber production tail gas. Background technique [0002] According to the classification of raw materials, rubber can be divided into two categories: natural rubber and synthetic rubber. Synthetic rubber is widely used in agriculture, national defense, transportation and daily life due to its abundant sources, low preparation cost, superior performance and high flexibility. In recent years, with the increase in the demand for synthetic rubber products, in order to meet the increase in demand and reduce production costs, rubber production enterprises have also come up with endless solutions for improving the rubber production process. The tail gas treatment process is the most important process in the rubber production process. It mainly includes the tail gas absorption process and the tail gas combustion process. The tail ...

AI Technical Summary

Problems solved by technology

During the production process of rubber, harmful gases such as hydrogen sulfide, sulfur dioxide, benzene, toluene, water vapor and colloidal particles will be produced. If they are not treated in time, they will be directly discharged into the atmosphere and have an impact on the environment.

[0003] At present, the non-organic substances in the rubber factory are mainly absorbed through the alkali washing tower. The existing alkali washing tower has a good absorption effect on part of the non-organic tail gas, but the absorption is not complete, and some tail gas will remain. The amount of washing liquid is large, and the treatment cost is high; for organic matter, the traditional alkali washing tower treatment method will be limited, so it will be treated by burning, but the burning way consumes a lot of energy, and Catalyst is needed to assist, and it takes a long time, so the efficiency is not ideal