Continuous powder lime forced dispersing, uniform mixing and feeding system

Abstract

The invention discloses a continuous powder lime forced dispersing, uniform mixing and feeding system which comprises a material storage bin used for storing powder lime, and the top of the material storage bin is connected with a powder lime feeding pipe; and the material storage bin is composed of an upper cylinder and a lower cone, and the lower cone is sequentially connected with a feeding machine, a rotational flow premixer and a high-speed jet mixer. According to the invention, powder material lime and carrier medium water are continuously mixed and added in the jet mixer; a stirrer, various adding pumps and storage and mixing tanks are omitted, so that the occupied area, the energy consumption, the investment and the maintenance cost of the equipment are greatly reduced; compared with an existing dissolving and preparing process, the response speed is high; however, no pump participates in the adding process, so that the equipment maintenance cost and the labor intensity of workers are reduced; a dissolving formula is a batch formula, and about one or more hour of preparation time is needed during emergency use; and the jet type is continuous, is suitable for the working condition of quick response, and is low in maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of powder material mixing and dosing in industries such as environmental protection, chemical industry and sewage treatment, and in particular relates to a continuous powder lime forced dispersion and uniform mixing and dosing system. Background technique [0002] For many industries, such as sewage treatment, chemical industry, petroleum and environmental protection, it is necessary to add powder lime and liquid medium for uniform mixing, and there are stronger requirements for dosing accuracy and mixing uniformity. , and some harsh environments are mixed and injected; the process of mixing and stirring technology is used, that is, the method of adding the mixed liquid to the raw water through the metering pump after mixing with the water in the dissolution tank, the disadvantage is that only batch mixing can be used The long deployment period cannot meet the emergency needs; the dissolving tank occupies a ...

AI Technical Summary

Problems solved by technology

[0002] For many industries, such as sewage treatment, chemical industry, petroleum and environmental protection, it is necessary to add powder lime and liquid medium for uniform mixing, and there are stronger requirements for dosing accuracy and mixing uniformity. , and some harsh environments are mixed and injected; the process of mixing and stirring technology is used, that is, the method of adding the mixed liquid to the raw water through the metering pump after mixing with the water in the dissolution tank, the disadvantage is that only batch mixing can be used The long deployment period cannot meet the emergency needs; the dissolving tank occupies a large area, requires continuous stirring and precise dosing, and the investment and energy consumption are high; In the process, due to the low mixing uniformity, it is easy to cause material waste, and at the same time, it is very easy to cause material deposition and crystallization to block; and this kind of material characteristics has a certain abrasive effect on the impeller and cavity of the dosing pump in the pipeline, and the operating cost is relatively large. Loss; the heterogeneous nucleation of powder lime solution in the pipeline will lead to crystallization, which will cause the diameter of the pipeline to shrink or even block the pipeline, resulting in equipment failure and high labor maintenance costs

[0003] For example, in the prior art, a small-scale powder water slurry preparation / dosing device and intelligent control, its CN110252185A, is made by adding water and stirring lime, activated carbon powder and other solid powders with a particle size greater than 200 mesh to make a solid content of 5~ 20% water slurry, and then use submerged pumps, hose pumps, diaphragm pumps, rotor pumps, etc. to send to the wastewater treatment point for wastewater treatment, to achieve multi-point delivery of wastewater treatment slurry, and the addition of small powder materials Although the process also uses a jet mixer in the system, it is only used as an auxiliary equipment for dust removal in the mixing and stirring system. The main body is to mix the medium water and powder materials in the dissolving tank in proportion to dosing. This existing technology is basically Using the mixed method, there are still many defects such as the long deployment period and the inability to meet the emergency needs. For details, please refer to the description in the first paragraph of the background, and I will not repeat it here.

[0004] For another example, apply for a self-developed light-weight micro-powder dosing device, its patent number is 200710056522.3; this patent records that the powder activated carbon follow-up dosing device uses a high-speed jet mixer with water as a carrier to carry out jet injection of powder materials In addition, although the floor area of ​​the equipment is reduced, the preparation process is omitted, and continuous mixing and dosing is realized, but when this type of high-speed jet mixer is used to add lime powder materials, due to the lime solution in the mass transfer mixing chamber and pipeline Heterogeneous nucleation in the inner wall will lead to the formation of crystals, which will cause the diameter of the mass transfer chamber and the pipe to shrink or even block the pipe, thus causing the equipment to fail to work normally

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