Full-automatic alkali adding device and alkali adding method

Abstract

A full-automatic alkali adding device comprises a solution box used for accommodating alkali liquor and pH meters used for measuring pH of an external material pipe to be subjected to alkali additionafter alkali addition, wherein a stirring mechanism used for stirring the alkali liquor is mounted on the solution box; an alkali outlet is formed in the bottom of the solution box; an alkali adding port is formed in the external material pipe to be subjected to alkali addition; a first alkali adding pipe and a second alkali adding pipe are communicated between the alkali outlet and the alkali adding port; a first control valve, a first alkali adding metering pump and a second control valve are arranged on the first alkali adding pipe sequentially; a third control valve, a second alkali addingmetering pump and a fourth control valve are arranged on the second alkali adding pipe sequentially; the pH meters are mounted on the external material pipe to be subjected to alkali addition downstream the alkali adding port. The device is reasonable in design, stable and reliable, continuous and variable addition of the alkali liquor is realized under cooperation of the metering pumps and the pH meters, and stable pH of the material is guaranteed.

Description

Technical field [0001] The invention relates to an alkali addition device, in particular to a fully automatic alkali addition device, and also relates to an alkali addition method of the above-mentioned automatic alkali addition device. Background technique [0002] At present, in the fields of electric power, petrochemical, metallurgy, chemical industry and light industry, the water circulation in the hot water system is generally used to heat the equipment. After the hot water temperature of the hot water system drops to a certain temperature, the equipment cannot be continued. For heating, it is necessary to return to the boiler for heating. However, the hot water will be mixed with some acidic substances during the circulating heating process, which makes the pH value of the hot water high, which is easy to corrode the boiler. [0003] In the prior art, after the hot water is recovered and mixed, alkaline water is added to react and neutralize the acidic substances in the hot w...

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Problems solved by technology

[0002] At present, in the fields of electric power, petrochemical, metallurgy, chemical industry and light industry, the water circulation in the hot water system is generally used to heat the equipment. After the hot water in the hot water system drops to a certain temperature after use, the equipment cannot be continued Heating needs to return to the boiler for heating, but the hot water will be mixed with some acidic substances during the circulating heating process, making the pH of the hot water relatively high, which is easy to corrode the boiler

[0003] In the prior art, the hot water is generally recovered and mixed, and alkaline water is added to react and neutralize the acidic substances in the hot water. However, the operation in the prior art is cumbersome, and the workload of the staff is large, and the amount of alkali added It is difficult to control, and it is difficult to ensure the stability of the pH value of hot water after adding alkali

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