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Method for preparing strontium-rich activated carbon by aid of hydrothermal processes

An activated carbon and strontium-rich technology, which is applied in chemical instruments and methods, water/sewage treatment, inorganic chemistry, etc., can solve the problem of weak combination of active components and carriers, reduced adsorption capacity, and crystallite blockage of active components and other issues, to achieve the effect of increasing added value, reducing the degree of graphitization, and reducing production costs

Active Publication Date: 2019-04-23
XIAMEN QUANJIALE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The strontium-loaded activated carbon prepared by impregnation, co-precipitation and other modification methods has problems such as active component crystallites blocking the micropores, reducing pore volume and adsorption capacity; the active component and the carrier are not firmly combined and easy to fall off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] 1. The preparation of strontium-enriched activated carbon by impregnation-hydrothermal method includes the following steps:

[0022] (a) Pretreatment process:

[0023] Place the proportioned activated carbon in a hydrochloric acid solution with a concentration of (4~10)wt% while heating while stirring, heat and boil the charcoal for 30-60 minutes, let stand for 0.5 hours and then suction and filter, and then repeatedly wash the proportioned activated carbon with pure water , Wash away the residual acid on the surface, then boil it with pure water for 0.5-1 hour, rinse it to a pH value of 6.5-8.5, and finally dry it at 105-120°C for use.

[0024] (b) Impregnation loading process:

[0025] Take an appropriate amount of pretreated activated carbon and place it in an excess sodium silicate solution with a concentration of 0.1-0.3 mol / L, soak and stir for 10-20 minutes, and then add a strontium salt solution with a concentration of 0.05-0.5 mol / L to the dipping solution. Mix and st...

example 1

[0033] Weigh 50g of activated carbon with a ratio of 150 mesh or more by weight, with a mass ratio of 3:2. Place it in a 3L beaker, slowly add 70g of diluted edible hydrochloric acid with a concentration of 4wt% into it while stirring. After stirring for 10 minutes, start heating and stir while heating until the activated carbon solution boils for 40 minutes. After cooling for 0.5 hours, filter with suction. Then the activated carbon is washed repeatedly with pure water to wash away the residual acid on the surface; then boiled with pure water for 0.5 hours, filtered and rinsed to a pH value of 6.5 to 8.5, which completes the process of hydrochloric acid deashing, and finally Dry at 105~120℃ for later use.

[0034] Weigh 4g of the proportioned activated carbon pretreated by hydrochloric acid impurity removal by weight, immerse it in 600mL of 0.2mol / L sodium silicate solution and stir for 10min, then add 150mL of 0.2mol / L chlorine to the dipping solution The strontium strontium s...

example 2

[0037] Weigh 50g of activated carbon with a ratio of 150 mesh or more by weight, with a mass ratio of 3:2. Place it in a 3L beaker, slowly add 70g of diluted edible hydrochloric acid with a concentration of 4wt% into it while stirring. After stirring for 10 minutes, start heating and stir while heating until the activated carbon solution boils for 40 minutes. After cooling for 0.5 hours, filter with suction. Then the activated carbon is washed repeatedly with pure water to wash away the residual acid on the surface; then boiled with pure water for 0.5 hours, filtered and rinsed to a pH value of 6.5 to 8.5, which completes the process of hydrochloric acid deashing, and finally Dry at 105~120℃ for later use.

[0038] Weigh 4g of the proportioned activated carbon pretreated by hydrochloric acid impurity removal by weight, immerse it in 600mL of 0.2mol / L sodium silicate solution and stir for 10min, then add 150mL of 0.2mol / L chlorine to the dipping solution The strontium strontium s...

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PUM

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Abstract

The invention discloses a method for preparing strontium-rich activated carbon by the aid of hydrothermal processes. The method includes steps of a), pretreating activated carbon, to be more specific,placing the proportioned activated carbon in diluted edible hydrochloric acid solution, heating the proportioned activated carbon in the diluted edible hydrochloric acid solution, carrying out impurity removal cleaning, further carrying out suction filtration, repeatedly washing the activated carbon, washing off surface residual acid liquid, boiling the activated carbon by water, then repeatedlyrinsing the activated carbon until the pH (potential of hydrogen) value of the activated carbon is 6.5-8.5, placing the activated carbon in drying ovens and drying the activated carbon for standby application; b), impregnating and loading strontium salt, to be more specific, slowly adding the pretreated proportioned activated carbon into impregnation liquid with diffusing agents and coupling agents, impregnating and stirring the activated carbon for 10 min, then adding strontium salt solution into the impregnation liquid and uniformly mixing and stirring the strontium salt solution and the activated carbon with each other in the impregnation liquid; c), carrying out hydrothermal reaction procedures, to be more specific, placing impregnated activated carbon solution in hydrothermal reactionkettles, keeping the temperatures constant for 2-6 hours after the hydrothermal reaction temperatures are increased and reach 130-250 DEG C and the pressures of the reaction kettles reach approximately 1MPa, carrying out still standing and temperature reduction after reaction is completely carried out, carrying suction filtration and cleaning, washing off surface residual impregnation liquid, then placing reaction products in drying ovens, and drying the reaction products at the temperatures of 120-150 DEGC to obtain the impregnated-hydrothermal strontium-rich activated carbon.

Description

Technical field [0001] The invention belongs to the technical field and application of activated carbon deep processing preparation. It specifically relates to the application of strontium-rich activated carbon in the field of drinking water. Background technique [0002] As we all know, water is the most important component of the human body, but for many years the nutritional contribution of water to the human body is often ignored. Natural waters contain calcium, magnesium, sodium, potassium, bicarbonate, sulfate, silicon, zinc, iodine, fluorine, chromium, lithium, molybdenum, selenium, cobalt, vanadium and many other soluble mineral ions. They are biologically used A good source of high-quality minerals, so drinking a proper amount of natural mineral water is good for the body and can supplement some trace elements to the body. The mineral element strontium in an appropriate amount is beneficial to human health. Strontium can regulate the differentiation of bone marrow mese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/354C02F1/68
CPCC02F1/68C01B32/354
Inventor 蒋俊勇李培政汪印李智伟
Owner XIAMEN QUANJIALE NEW MATERIAL TECH CO LTD
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