Sodium hydroxide production device and operating method thereof

Abstract

The invention discloses a sodium hydroxide production device and an operating method thereof. The sodium hydroxide production device comprises an electrolytic box body, a junction box, a hydrogen pipe valve, a hydrogen pipe, a chlorine pipe valve, a chlorine pipe, a feed pipe, a feed valve, an inlet pipe, an inlet valve, a blow-off valve, a discharge pipe, a draw-off pump, a conveyer pipe, a heater, a box cover, an anode plate, a chitosan filter membrane, a cathode screen, a cation exchange membrane, a segregation board and an electric heating wire, the sodium hydroxide production device provided by the invention has the beneficial effects as follows: the anode plate adopts a mesh metal plate made of titanium alloy, so that the reaction area is increased, the reaction speed is increased, the material corrosion resistance is strong, the heater is controlled through a constant temperature circuit, the heater can be used for heating a sodium hydroxide solution passing through the interior of the heater always, the thickness of the chitosan filter membrane ranges from 40 to 50 micrometers, the chitosan filter membrane can absorb and retain heavy metal ions in an electrolyte under an alkaline environment, the thickness ranges from 40 to 50 micrometers, and the resistance to fluid can be reduced to a great extent while the filtering strength of the filter membrane is ensured.

Description

technical field [0001] The invention relates to a sodium hydroxide production equipment, in particular to a sodium hydroxide production device and an operation method thereof, belonging to the field of chemical product production. Background technique [0002] In chemical and metallurgical production, sodium hydroxide solution is a common raw material. In current industrial production, sodium hydroxide solution is generally produced by electrolysis of sodium chloride solution. Most of the existing production equipment uses carbon rods as electrodes. The electrolysis efficiency of the method is very low, and the content of heavy metals such as lead and mercury in the produced products is relatively high, and the high-concentration sodium hydroxide solution produced in a low-temperature environment is prone to crystallization during the transportation process. Sodium solution crystallizes at low temperature and blocks the pipeline. Now it is usually transported by insulated pi...

AI Technical Summary

Problems solved by technology

[0002] In chemical and metallurgical production, sodium hydroxide solution is a common raw material. In current industrial production, sodium hydroxide solution is generally produced by electrolysis of sodium chloride solution. Most of the existing production equipment uses carbon rods as electrodes. The electrolysis efficiency of the method is very low, and the heavy metal content such as lead and mercury in the produced product is high, and the high-concentration sodium hydroxide solution produced in the low temperature environment is easy to crystallize during the transportation process. Sodium solution crystallizes at low temperature to block pipelines, and now it is usually transported by insulated pipelines, but this method leads to high maintenance costs for transportation equipment. Once the pipeline is blocked by crystallization, the processing operation is very cumbersome, which affects the normal production

Images