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Acid-containing wastewater recycling device and method for hydrochloric acid regenerator set

A waste water recovery and unit technology, applied in separation methods, chemical instruments and methods, filtration loops, etc., can solve the problems of ineffective recovery and utilization of hydrochloric acid, increased energy costs, and increased consumption of hydrochloric acid, so as to reduce production costs and reduce emissions. , the effect of reducing consumption

Active Publication Date: 2014-04-16
ANGANG STEEL CO LTD
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Problems solved by technology

Moreover, the acidic water contains a large amount of impurities, which brings difficulties to cleaning. At the same time, this part of hydrochloric acid cannot be effectively recycled, resulting in an increase in the consumption of hydrochloric acid and a great increase in energy costs.

Method used

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  • Acid-containing wastewater recycling device and method for hydrochloric acid regenerator set

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the present invention is not limited to the following embodiments.

[0017] See figure 1 , a hydrochloric acid regeneration unit acid-containing wastewater recovery device, comprising a pit 1, a pit pump 4, and a water ditch 3, the pit pump 4 is respectively connected with the pit 1 and the regeneration unit, the water ditch 3 communicates with the pit 1, and Including grate 2, acid-resistant filter 5, pipe fittings, filter screen, 3 or more grates 2 are evenly distributed on the ditch 3 near the pit 1, and φ4-φ8 filter holes are evenly distributed on the grate 2, The distance between adjacent grates 2 is 0.8-1.5m, and the grate 2 adjacent to pit 1 is provided with a filter, and the filter is 30-50 mesh. The outlet of the pit pump 4 is connected with an acid-resistant filter 5 through a pipe fitting. The filtrati...

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Abstract

The invention relates to an acid-containing wastewater recycling device and an acid-containing wastewater recycling method for a hydrochloric acid regenerator set. The acid-containing wastewater recycling device comprises a pit, pit pumps and ditches, wherein the pit pumps are respectively connected with the pit and the regenerator set; the ditches are communicated with the pit. The acid-containing wastewater recycling device also comprises grates, an acidproof filter, a pipe fitting and filter nets; three or more grates are uniformly distributed on the ditches close to the pit; a distance between adjacent grates is 0.8-1.5m; the filter nets are arranged on the adjacent grates; outlets of the pit pumps are connected with the acidproof filter; the filter precision of the acidproof filter is 50-80 microns. The acid-containing wastewater recycling device for the hydrochloric acid regenerator set has the advantages that acid-containing water can be recycled and used, emission of hydrochloric acid is alleviated, pollution of chloride ions to the environment is relieved, and the energy consumption of new hydrochloric acid is reduced; wastewater cannot be discharged to a neutralization station, so that the neutralization station is in a non-use state, and the pollution to the environment is relieved.

Description

technical field [0001] The invention relates to a recovery device and method for acid-containing wastewater of a hydrochloric acid regeneration unit. Background technique [0002] In the regeneration unit, regenerate the cleaning spray gun, clean the ground and take samples of the waste water, as well as the waste acid water for cleaning the filter, the acid-containing water emptied by the concentrated acid pipeline, and the concentrated acid for the air defense of the pre-concentrator. These waste water contain a large amount of The hydrochloric acid is collected by the ditch, merged into the pit, and discharged to the neutralization station by the pit pump for treatment. The treated wastewater contains more chloride ions and causes environmental pollution. Moreover, the acid-containing water contains a large amount of impurities, which brings difficulties to cleaning. At the same time, this part of hydrochloric acid cannot be effectively recycled, resulting in an increase ...

Claims

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Application Information

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IPC IPC(8): B01D36/02
Inventor 李洪斌冯志新王东张庭昌谢庆宇
Owner ANGANG STEEL CO LTD
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