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Activated carbon for removing hydrogen sulfide and preparation method thereof

A technology of activated carbon and hydrogen sulfide, applied in the field of activated carbon, can solve the problems of large influence of water content in hydrogen sulfide, weak hydrogen sulfide adsorption capacity, and high cost of modifier, and achieve strong water carrying capacity, improve load capacity, and improve adsorption. effect of ability

Active Publication Date: 2021-03-05
FUJIAN XINSEN CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the use of activated carbon to remove hydrogen sulfide is a main application direction, but the traditional activated carbon has weak adsorption capacity for hydrogen sulfide, and the adsorption efficiency is slow. In order to solve this problem, KOH, NaOH, ethanol, Acetone, organic amine, zinc oxide and other solutions are impregnated on the activated carbon to modify the activated carbon, so that the modified activated carbon has a strong effect of removing hydrogen sulfide
However, the above method has the problem of needing to use a strong alkali, or the cost of a modifier is high, and there is a problem that the application process is greatly affected by the water content of hydrogen sulfide

Method used

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Examples

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Effect test

preparation example Construction

[0012] The invention provides a kind of preparation method of the activated carbon that is used for removing hydrogen sulfide, comprises the following steps:

[0013] Step 1. Dry peat and cleaned nut shells separately, then dry and pulverize; mix the pulverized peat and nut shells with potassium carbonate solution, place them at room temperature for 10-14 hours, centrifuge and dehydrate, and then Raise the temperature at a heating rate of 12°C per minute, and carbonize at 550-700°C to obtain primary activated carbon;

[0014] Step 2. The primary activated carbon obtained in step 1 is immersed in copper carbonate solution for 15-20 hours, and activated at 180-280°C for 45 minutes to obtain the first product;

[0015] Step 3. Spray deionized water on the first product until the water content of the first product is 70-75%, add crushed ammonium chloride, mix evenly, add coal tar to granulate, under the condition of 55-70°C Drying, crushing and passing through a 180-mesh sieve to...

Embodiment 1

[0026] A preparation method for activated carbon for removing hydrogen sulfide, comprising the following steps:

[0027] Step 1. Dry the peat and cleaned nut shells separately, then dry and crush them; pass the crushed peat and nut shells through an 80-mesh sieve, then mix them with potassium carbonate solution, place them at room temperature for 14 hours, and centrifuge Dehydration, then heating at a rate of 12°C per minute, carbonization at 550-700°C to obtain primary activated carbon;

[0028] Wherein, the mass ratio of pulverized peat and nut shells is 1.3:1, and the solid content of potassium carbonate in the potassium carbonate solution is 2% of the pulverized peat and nut shell gross mass, and each Stir once every 2h, the stirring speed is 400rpm, and the stirring time is 30min;

[0029] Step 2, the primary activated carbon obtained in step 1 is placed in the copper carbonate solution and immersed for 15 hours, activated at 180-280 ° C for 45 minutes, and the first pro...

Embodiment 2

[0032] A preparation method for activated carbon for removing hydrogen sulfide, comprising the following steps:

[0033] Step 1. Dry the peat and cleaned nut shells separately, then dry and crush them; pass the crushed peat and nut shells through an 80-mesh sieve, then mix them with potassium carbonate solution, place them at room temperature for 10 hours, and centrifuge Dehydration, then heating at a rate of 12°C per minute, carbonization at 550-700°C to obtain primary activated carbon;

[0034] Wherein, the mass ratio of pulverized peat and nut shells is 1.2:1, and the solid content of potassium carbonate in the potassium carbonate solution is 3% of the pulverized peat and nut shell gross mass, and each Stir once every 2h, the stirring speed is 400rpm, and the stirring time is 30min;

[0035] Step 2, the primary activated carbon obtained in step 1 is placed in the copper carbonate solution and immersed for 20 hours, activated at 180-280 ° C for 45 minutes, and the first pro...

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Abstract

The invention discloses an activated carbon for removing hydrogen sulfide and a preparation method thereof, belonging to the technical field of activated carbon. The preparation method selects peat and nut shells as raw materials, mixes them with potassium carbonate solution after pulverization, and performs carbonization after dehydration. The first product is obtained, and the first product is activated after dipping in copper carbonate solution, and then mixed with ammonium chloride and coal tar to prepare activated carbon for removing hydrogen sulfide. The preparation method of activated carbon for removing hydrogen sulfide provided by the present invention does not use strong alkali in the preparation process, the operation is safer, nut shells are used as raw materials, the cost is lower, and the prepared activated carbon itself has a strong water-carrying capacity and is relatively Compared with activated carbon prepared by traditional modification methods, it has stronger adsorption capacity and higher adsorption efficiency for hydrogen sulfide.

Description

technical field [0001] The invention belongs to the technical field of activated carbon, and in particular relates to an activated carbon used for removing hydrogen sulfide and a preparation method thereof. Background technique [0002] Activated carbon has a well-developed pore structure, large specific surface area and abundant surface chemical groups, and is a kind of carbon material with strong specific adsorption capacity. Therefore, activated carbon is often used as a support for adsorbents and catalysts. The reason why activated carbon can be used as a catalyst carrier is mainly because it has unsaturated bonds, and the functional groups composed of nitrogen and oxygen can catalyze many reactions. Among them, the use of activated carbon to remove hydrogen sulfide is a main application direction, but the traditional activated carbon has weak adsorption capacity for hydrogen sulfide, and the adsorption efficiency is slow. In order to solve this problem, KOH, NaOH, etha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/384C01B32/324C01B32/348B01J20/20B01J20/30B01D53/02
CPCC01B32/348C01B32/324C01B32/33
Inventor 林鹏徐沁杰沈婧菲林锴林树
Owner FUJIAN XINSEN CARBON
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