Method and device for continuously rinsing chemical activated carbon

Abstract

The invention discloses a method and device for continuously rinsing chemical activated carbon. The rinsing device is a combination of a conveying chain plate, a long-strip-shaped rinsing water tank and an activated tail gas heating facility and comprises a feeding pipe, material partition plates, the conveying chain plate, a rinsing water tank bottom plate, an activated tail gas flow guide partition plate, an activated tail gas jacket, a chain wheel, an activated tail gas inlet, an activated tail gas connecting pipe, an activated tail gas outlet, a device supporting column, a spraying nozzle,an activated tail gas condensate discharge port, a rinsed carbon guide groove and side face material baffles. The rinsing water tank has the length of 10-15 m and the width of 0.6-1 m. The activatedtail gas jacket is arranged at the bottom of the water tank. The annular conveying chain plate is arranged on the inner side and the two ends of the water tank and the outer side of the activated tailgas jacket. The material partition plates perpendicularly welded to the chain plate at the interval of 0.4-0.6 m are arranged on the chain plate. The side face material baffles parallel to the side faces are arranged on the upper sides, on the two sides of the interior of the water tank, of the chain plate. A driving motor drives the chain wheel and the chain plate through a reduction gear to circularly run around the water tank in the upward, downward, leftward and rightward directions.

Description

[0001] 1. Technical field [0002] The invention relates to a method and equipment for chemically preparing activated carbon, in particular to a method and equipment for continuously rinsing chemically activated carbon. [0003] 2. Background technology [0004] Activated carbon produced by chemical methods such as zinc chloride method or phosphoric acid method has developed micropore and mesopore structure, its surface contains chemically active groups, strong adsorption capacity, strong adsorption force and adaptability to larger molecular substances. Strong features, its wide range of uses. During the activation process, the activator phosphoric acid in the wood raw material is converted into pyrophosphoric acid H due to high temperature 4 P 2 o 7 and HPO metaphosphate 3 However, in activated carbon, the activated carbon must be soaked with water to dissolve the pyrophosphoric acid and metaphosphoric acid in the activated carbon into orthophosphoric acid H 3 PO 4 , and...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: one is to reclaim the phosphoric acid solution through the filter screen at the bottom of the recovery bucket, the filtration speed is relatively slow, and the activated carbon is soaked with cold water, and the washing effect of phosphoric acid is not good; the other is to reclaim phosphoric acid. Activated carbon needs to be flushed with water to the rinsing tank for rinsing and filtering, which is troublesome, low production efficiency, and labor-intensive; another example is a similar patent with application number 201610880789.3, which is a device for countercurrently recovering phosphoric acid from chemically activated materials. The feature is that a plurality of cylindrical recovery barrels are connected in series, and the water passes through the activation material layer of each recovery barrel in turn, and the pyrophosphate H in the activation material is 4 P 2 o 7 and HPO metaphosphate 3 Converted to phosphoric acid, after the rinsing is completed, the activated material in the recovery barrel must be flushed into the rinsing tank with high-pressure water for rinsing. It is an intermittent rinsing operation that requires manual operation, which is relatively troublesome; another example is a patent with application number 201811348374.7 The high-efficiency activated carbon rinsing equipment is characterized by: a helical blade is set in the rinsing tank, and the helical blade is driven to rotate by the drive motor to stir the activated carbon. Because the sawdust activated carbon is accumulated in the tank, there is a lot of resistance, and the drive motor is required. The shortcomings of high power and high energy consumption, the equipment is also batch feeding and discharging intermittent operation, it seems troublesome

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