Combined flue gas washing tank

Abstract

The invention discloses a combined flue gas washing tank which comprises multiple washing tank bodies arranged in parallel. A gas inlet pipe, a liquid adding pipe and a gas outlet pipe are arranged at the upper end of each washing tank body, a liquid discharging pipe and an overflow pipe are arranged at the lower end of each washing tank body, a main liquid adding pipe is arranged above each washing tank body, liquid adding pipes of the washing tank bodies are communicated with the main liquid adding pipe, a main gas outlet pipe is arranged on the main liquid adding pipe, the gas outlet pipes of the washing tank bodies are communicated with the gas inlet pipe of one washing tank body adjacent to each washing tank body through a connecting pipe, flue gas detection devices are arranged on the gas outlet pipes, electromagnetic three-way valves are arranged on the connecting pipes, reversing ports of the electromagnetic three-way valves are communicated with the main gas outlet pipe through conduits, and a main liquid discharging pipe is arranged under the washing tank bodies. The combined flue gas washing tank can ensure that washed flue gas can reach the discharge standard. In addition, a multi-stage washing mode is adopted, flue gas discharge reaching the standard can be still ensured under the situation that replacement is not performed in time after impurities in washing liquid in each single washing tank body are saturated.

Description

technical field [0001] The invention relates to a flue gas washing device, in particular to a combined flue gas washing tank. Background technique [0002] Industrial production processes and environmental protection emissions often require pretreatment of various gases to be analyzed. Water washing is a relatively common method for removing coke and impurities. At present, most of the flue gas washing devices adopt the washing and dust removal device of direct spraying, the effect is not good, and the removal rate of dust in the flue gas is low; although there are flue gas washing equipment using washing liquid in the prior art, the equipment costs a lot , It is impossible to change the washing capacity of the equipment according to the actual situation, and the utilization rate of the washing liquid inside the equipment is low, and it takes a lot of washing liquid to wash the flue gas. In addition, the flue gas washing equipment in the prior art needs to replace the washi...

AI Technical Summary

Problems solved by technology

At present, most of the flue gas washing devices adopt the washing and dust removal device of direct spraying, the effect is not good, and the removal rate of dust in the flue gas is low; although there are flue gas washing equipment using washing liquid in the prior art, the equipment costs a lot , it is impossible to change the washing capacity of the equipment according to the actual situation, and the utilization rate of the washing liquid inside the equipment is low, and it takes a lot of washing liquid to wash the flue gas

In addition, the flue gas washing equipment in the prior art needs to replace the washing liquid in time after the washing liquid is saturated with impurities. in the atmosphere

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