Acid pickling process and acid pickling system for active carbon

A technology of activated carbon and pickling, applied in the direction of inorganic chemistry, non-metallic elements, carbon compounds, etc., can solve the problems of low automation, low efficiency and complex structure of pickling process

Active Publication Date: 2014-01-29
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the present invention is to provide an activated carbon pickling process and a pickling system to solve the problems of complex structure, low efficiency and low automation of the existing activated carbon pickling equipment.

Method used

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  • Acid pickling process and acid pickling system for active carbon
  • Acid pickling process and acid pickling system for active carbon
  • Acid pickling process and acid pickling system for active carbon

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] figure 1 It is a schematic flow chart of a specific embodiment of the present invention. Such as figure 1 Shown, a kind of activated carbon pickling process comprises the steps:

[0023] Step S11, providing a pickling device and injecting a certain amount of water. The hydrochloric acid concentration is 3% to 8% by mass fraction, preferably 5%. Of course, the hydrochloric acid can also be replaced by other industrial acids such as hydrochloric acid, nitric acid, hydrofluoric acid and mixed acids, preferably hydrochloric acid is used as the acid for pickling. The water is domestic water that meets the water use standard, and the water described herein is the water of this standard, and of course it can also be water with higher purity such as deionized water.

[0024] Step S12, adding a certain amount of hydrochloric ...

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Abstract

The invention provides an acid pickling process for active carbon. The acid pickling process comprises the following steps of: providing an acid pickling device and injecting a certain amount of water in the device; adding a certain amount of hydrochloric acid to the acid pickling device, and introducing high-pressure gas and stirring to form acid pickling solution with a certain concentration; measuring preprocessed active carbon material and feeding the active carbon material to the acid pickling device, soaking and stirring; introducing steam for heating and then alternately introducing high-pressure gas and steam for 1-2 hours; discharging the acid pickling solution at the end of acid pickling, and washing the active carbon material with water; and dehydrating, drying and screening to obtain the active carbon finished product. The invention also provides an acid pickling system for active carbon. By adopting the acid pickling process and the acid pickling system for active carbon, the semi-automatic continuous work of the whole acid pickling process can be realized, the sealing effect of the whole acid pickling process is realized, and pollution to the environment and corrosion to peripheral equipment can be avoided.

Description

technical field [0001] The invention relates to the field of activated carbon preparation, in particular to an activated carbon pickling process and a pickling system. Background technique [0002] Activated carbon is an artificial carbon material product with a highly developed pore structure and a large internal specific surface area. It is mainly composed of carbon elements (85% to 92%), and also contains elements such as hydrogen, oxygen, sulfur, nitrogen, and some inorganic minerals. substance. During the use of these inorganic minerals in some fields, the surface of activated carbon is easy to deposit carbonate-like substances, which significantly reduces the adsorption activity of activated carbon and directly affects the various process indicators of adsorbed carbon and products; when used as water purification carbon, In the process of long-term contact with water, the inorganic minerals and acid-soluble substances in activated carbon will directly affect the conce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B32/378C01B32/39
Inventor 邢贞娇汪印
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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