Three-stage hydrator for preparing hydrated lime

Abstract

The invention discloses a three-stage hydrator for preparing hydrated lime. The hydrator comprises a tank body, wherein a feed port and an exhaust port are formed on the top of the tank body; a discharge port is formed at the bottom of the tank body; three layers of partition boards are arranged inside the tank body from top to bottom; passages are formed between one ends of the partition boards and the side walls of the tank body; the passages of the adjacent partition boards are staggered with each other; the partition boards divide the inside of the tank body into first-stage hydration chambers, second-stage hydration chambers and third-stage hydration chambers which are respectively provided with a stirring shaft; stirring blades are distributed on the stirring shafts; axial directions of the stirring shafts are the same as the flow direction of a medium; the stirring shafts are respectively driven by motors; the passages between the partition boards inside the first-grade chambers and the side walls of the tank body correspond to the feed port; and a plurality of observation windows are formed at one side of the tank body. By controlling a plurality of procedures for the inside of the multi-stage dry powder hydrator, such as reasonable water allocation, burnt lime is hydrated to fluffy hydrated lime dry powder with the water content being controlled within 1.5%; and an hydrated lime emulsion at a certain concentration can be prepared according to requirements.

Description

technical field [0001] The invention relates to the field of slaked lime production and manufacturing equipment, in particular to a three-stage digester for preparing slaked lime. Background technique [0002] Digesters are widely used in environmental protection dry desulfurization, semi-dry desulfurization, quicklime digestion, fine processing and fine chemical industries; such as: lime digestion process for burning ingredients in iron and steel plants, quicklime digestion process for desulfurization system, calcium treatment agent for sewage treatment Preparation process, toothpaste, pharmaceutical and other fine chemical commercial quality slaked lime Ca(OH)2 preparation process, etc. There are mainly two methods for preparing quicklime at present. One is to put quicklime into the tank, add a certain amount of water, cover it after stirring, and then stuff it for a few days. The disadvantages of this method are: a. Continuous production is not possible; b. Digestion Th...

AI Technical Summary

Problems solved by technology

There are mainly two methods for preparing quicklime at present. One is to put quicklime into the tank, then add a certain amount of water, cover it after stirring, and then stuff it for a few days. The disadvantages of this method are: a. continuous production is not possible; b. digestion The reaction is uneven, some have more water, some have less water; c. Low efficiency and low yield

Another method is to put the quicklime on the flat ground, spray it with water, put it away after a while, and then pack it. The disadvantages of this method are: a. The working environment is harsh; b. The work intensity is high, the efficiency is low, and it is not suitable for large-scale Production; c. Work is greatly affected by the weather

At the same time, the disadvantages of single-stage digester: 1. Insufficient reaction time; 2. The output is a mixture of feed and water, not a finished product

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