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Tail gas continuous processing device utilizing alkaline activation to prepare activated carbon and tail gas continuous processing method thereof

A treatment device and treatment method technology, applied in chemical instruments and methods, separation methods, alkali metal oxides, etc., can solve problems such as no safe treatment, casualties, and exhaust pipes blowing up, to solve safety problems, eliminate Safety hazard, eliminate the effect of burning

Inactive Publication Date: 2014-02-26
浙江阿佩克斯能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) There is no safe handling of the delivery pipes involved in exhaust gas
The alkali metal in the activated tail gas exists in the form of gas in the high-temperature activation furnace, but as it is discharged from the exhaust pipe, its temperature will gradually drop, but when the temperature drops below the melting point of the alkali metal, Alkali metals will solidify and adhere to the inner wall of the exhaust pipe in the form of crystals. Over time, large particles of alkali metal blocks will form on the inner wall of the exhaust pipe. If the tube blows up, it will cause damage to the surrounding area, including casualties
Therefore, this method is not safe and is not suitable for actual production applications.

Method used

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  • Tail gas continuous processing device utilizing alkaline activation to prepare activated carbon and tail gas continuous processing method thereof
  • Tail gas continuous processing device utilizing alkaline activation to prepare activated carbon and tail gas continuous processing method thereof
  • Tail gas continuous processing device utilizing alkaline activation to prepare activated carbon and tail gas continuous processing method thereof

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Effect test

Embodiment 1

[0044] The device of the present invention is used to process the generated gas during the production of activated carbon by alkali activation, and the gas discharged from the activation furnace encounters air combustion in the oxidation tower to reduce or remove harmful organic components in the exhaust gas. According to the calculation results of measuring the alkali metal concentration in the recovered aqueous solution in the recovery chamber and the amount of residual alkali metal in the activated product, it can be confirmed that the alkali metal vapor generated during activation is completely recovered after being treated by the device, and there is no gas in the exhaust pipe 1. Residual alkali metal, this device is effective and feasible.

Embodiment 2

[0046] Through the transformation of the treatment device, the inside of the oxidation tower 2 and the heating exhaust pipe 1 can be observed and cleaned. Open a hole of about 40 centimeters * 30 centimeters on the cylinder body of the oxidation tower directly opposite to the exhaust pipe, and configure an openable and closable stainless steel cover 24 thereon. Open lid stainless steel cover 24, can observe the situation inside oxidation tower 2 and heating exhaust pipe 1, also can clean it if necessary. Set up an operating platform 25 equipped with steps outside the oxidation tower 2, so that personnel can operate on it (such as image 3 shown).

Embodiment 3

[0048] Mix the carbonized product of phenolic resin (800°C, 2 hours carbonization, average particle size 200-400μm) and KOH at a weight ratio of 1:3, place it in a nickel activation furnace, and raise the temperature to 550°C under stirring in a nitrogen atmosphere Keep it for 2 hours to make the reactant form powder (fine grain), then raise the temperature to 800°C, keep it for 30 minutes, discharge the product into the cooler and cool it below 50°C, wash it with hot water / hot hydrochloric acid after discharge When it reaches neutrality, the washing liquid is recovered, and the temperature of the exhaust pipe is kept at 800°C during the activation process, and the device of the present invention is used to safely process and recover metal potassium. Use ICP to measure the concentration of metal potassium in the washing recovery liquid and metal potassium treatment recovery liquid, and calculate the total amount of potassium. The results are summarized in Table 1. It can be s...

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Abstract

The invention provides a tail gas continuous processing device utilizing alkaline activation to prepare activated carbon. The tail gas continuous processing device comprises a heating exhaust pipe, an oxidizing tower and a recycling chamber, wherein an air outlet of the heating exhaust pipe is connected to the upper part of the oxidizing tower; the top of the oxidizing tower is provided with a ventilation opening, the bottom of the oxidizing tower is provided with an inclined plane structure and is provided with an outlet which is connected with the recycling chamber, the recycling chamber is provided with a spraying device and an exhaust fan, and the upper part of the recycling chamber is provided with a discharge outlet. The invention also provides a tail gas continuous processing method for utilizing alkaline activation to prepare the activated carbon. The airflow direction of the tail gas can enter from the upper part of the oxidizing tower and can downward move so as to discharge the oxidizing tower from the lower part of the oxidizing tower, and the tail gas enters from the lower part of the recycling chamber and can discharge from the upper part of the recycling chamber. The tail gas continuous processing device and the tail gas continuous processing method provided by the invention have the advantages that the exhaust gas generated through preparation of activated carbon by using the continuous processing alkaline activation and can fully solve the safe problem of an alkali metal, the industrialization continuous production of the high specific-surface-area activated carbon prepared through alkaline activation becomes the possibility, harmful organic matter constituents in the activated gas can be burned to remove and absorbed through spraying in a processing process, and the alkali metal after processing is recycled.

Description

technical field [0001] The invention relates to an alkali metal continuous safety treatment device and method for producing activated carbon by industrialized alkali activation. Background technique [0002] Activated carbon with high specific surface area has an extremely developed pore structure and is widely used as an adsorbent in various fields. In addition, the application in solid catalyst, catalyst carrier, etc. is also very promising. In recent years, activated carbon with high specific surface area and high purity has attracted much attention as an electrode material for supercapacitors (EDLC) and fuel cells. The activation methods of activated carbon manufacturing are generally divided into gas activation and drug activation. Gas activation is carried out by using carbon dioxide, water vapor and other gases; drug activation is performed by zinc chloride, phosphoric acid, alkali metal hydroxides (KOH, NaOH, etc.) activated by chemicals. Among them, KOH has the b...

Claims

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Application Information

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IPC IPC(8): B01D53/34C01B31/12C01D15/02C01D1/02C01B32/348
Inventor 陈再华
Owner 浙江阿佩克斯能源科技有限公司
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