Waste acid cleaning device and process

Abstract

The invention discloses a waste acid cleaning device and process. The waste acid cleaning device comprises a first filter, a second filter, a turbid acid pipe and a water pipe. A first waste acid inlet, a first net acid outlet and a first cleaning opening are formed in the first filter, a first valve is arranged at the first net acid outlet, and a second valve is arranged at the first cleaning opening. Similarly, the second filter is provided with a second waste acid inlet, a second net acid outlet, a second cleaning opening, a third valve and a fourth valve. The turbid acid pipe is connectedwith the first waste acid inlet and the second waste acid inlet and provided with a fifth valve and a sixth valve for controlling acid feeding. The water pipe is connected with the first waste acid inlet and the second waste acid inlet and provided with a seventh valve and an eighth valve for controlling water feeding. In practical use, when the first filter performs filtering operation, the second filter is cleaned by water. Vice versa, the first filter and the second filter alternately perform operation and cleaning to avoid blockage.

Description

technical field [0001] The invention relates to the field of waste acid cleaning, and more particularly, to a waste acid cleaning device and process. Background technique [0002] Waste acid cleaning is the process of passing waste acid into the filter and obtaining pure acid. [0003] As far as the prior art is concerned, the traditional waste acid filter feeds acid into the side wall, and after filtering through a circular or plate-type inner tank, flows out from the other side. However, in actual operation, since the waste acid entering the filter contains impurities such as dust, corrosion inhibitor, iron powder and other impurities on the surface of the strip steel, more impurities accumulate on the filter holes of the filter liner used for a long time, resulting in filtration. In addition, the blockage has a certain viscosity, and when the blockage occurs, it is not easy to flush out, resulting in a gradual decrease in the flow of the system, which eventually induces ...

AI Technical Summary

Problems solved by technology

However, in actual operation, because the waste acid entering the filter contains impurities such as dust on the surface of the strip steel, corrosion inhibitors, iron powder, etc., more impurities accumulate on the filter holes of the filter liner used for a long time, causing filtration And the blockage has a certain viscosity. When the blockage occurs, it is not easy to flush away, resulting in the gradual decrease of the flow rate of the system, and finally induces various shutdown failures

Images