Technology for comprehensive utilization treatment of chemical plant waste hydrochloric acid and special MVR evaporation concentrator thereof

Abstract

The invention relates to a technology for comprehensive utilization treatment of chemical plant waste hydrochloric acid and a special MVR evaporation concentrator thereof; the technology for comprehensive utilization treatment of the chemical plant waste hydrochloric acid comprises the following steps: allowing chemical produced waste hydrochloric acid to enter a reaction tank placed with iron scraps, and carrying out a reaction of the hydrochloric acid and iron to generate ferrous chloride and hydrogen gas, wherein the specific reaction is as follows: 2HCL+Fe->FeCL2+H2 (gas); and after treating the hydrogen gas by a packing hydrogen gas purifier, outputting and sending the treated hydrogen gas as a hydrogen gas energy source to a preheating furnace to be used as fuel for making up loss of equipment heat. The useless hydrochloric acid is treated, the economic benefits are obtained in the treatment process, and the by-products hydrogen gas and carbon powder are used as energy supplement during equipment operation.

Description

Technical field [0001] The invention relates to a process for comprehensive utilization of waste hydrochloric acid in a chemical plant, in particular to a special MVR evaporation concentrator for a process for comprehensive utilization of waste hydrochloric acid in a chemical plant that combines physical and chemical processes. Background technique [0002] At present, the sewage produced by chemical plants is basically treated by water and discharged after reaching the standard. Therefore, everyone’s first impression is that it is a big investment, a money-losing business, and it costs money to treat water. The treated water is discharged. Not cost-effective. In order to spend less money, many units dispose of part of it and discharge part of it stealthily. In some units, the treatment equipment is just a display and is not used at all. The sewage is poured into the ground. If it is checked, it will be turned on, and if it is checked, it will be turned off. , The purpose is to ...

AI Technical Summary

Problems solved by technology

Injection into the ground is extremely harmful, causing irreversible and permanent pollution of groundwater, directly endangering our drinking water safety

At present, the market is sluggish, the profit is very low, and the installation of water treatment will lose money, so many enterprises are closed. In order to save enterprises, reduce pollution, make full use of raw materials, create more wealth for the society, and return people to blue sky and green water

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