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Preparation method of mercury removal adsorbent for Indonesian oil sand tailings

A technology of adsorbent and tailings, which is applied in the field of preparation of adsorbents for mercury removal from oil sand tailings in Indonesia, can solve the problems of occupying land, polluting the environment, waste of resources, etc., and achieves low preparation cost, simple preparation method and high adsorption rate. Effect

Inactive Publication Date: 2017-08-04
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, oil sands contain 5% to 30% of asphalt, 1% to 10% of water, and 70% to 90% of solid matter such as sand grains. The accumulation of tailings not only occupies land and pollutes the environment, but also is a waste of resources, so the remaining tailings need to be rationally utilized

Method used

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  • Preparation method of mercury removal adsorbent for Indonesian oil sand tailings
  • Preparation method of mercury removal adsorbent for Indonesian oil sand tailings
  • Preparation method of mercury removal adsorbent for Indonesian oil sand tailings

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The oil sand tailings produced in Indonesia are used as raw materials, and its composition contains CaCO 3 , crush the oil sand tailings into powder, sieve the part below 20 mesh (large particles continue to be pulverized), and then put the sieved oil sand tailings powder in a muffle furnace, at 900 ° C Burn for 4 hours, then cool it down to room temperature; mix burnt oil sand tailings powder and water at a mass ratio of 1:6, and carry out digestion reaction at 80°C for 4 hours; put the reaction product in an oven, It is dried at 105°C, and the dried product is ground into powder to obtain the adsorbent for mercury removal of oil sand tailings.

Embodiment 2

[0034] The oil sand tailings produced in Indonesia are used as raw materials, and its composition contains CaCO 3, crush the oil sand tailings into powder, sieve the part below 20 mesh (large particles continue to be pulverized), and then put the sifted oil sand tailings powder in a muffle furnace, at 900 ° C Burn for 4 hours, then cool it down to room temperature; mix the burnt oil sand tailings powder and water at a mass ratio of 1:6, then add 0.1% potassium permanganate by mass percentage, and then The reaction was carried out at ℃ for 4 hours; the reaction product was put into an oven, dried at 105 ℃, and then the dried product was ground into powder to obtain the adsorbent for mercury removal of oil sand tailings.

Embodiment 3

[0036] The oil sand tailings produced in Indonesia are used as raw materials, and its composition contains CaCO 3 , crush the oil sand tailings into powder, sieve the part below 20 mesh (large particles continue to be pulverized), and then put the sifted oil sand tailings powder in a muffle furnace, at 900 ° C Burn for 4 hours, then cool it down to room temperature; mix the burnt oil sand tailings powder and water at a mass ratio of 1:6, then add 1% potassium permanganate by mass percentage, and then The reaction was carried out at ℃ for 4 hours; the reaction product was put into an oven, dried at 105 ℃, and then the dried product was ground into powder to obtain the adsorbent for mercury removal of oil sand tailings.

[0037] The oil sand tailings adsorbent prepared in Examples 1 to 3 was used under the condition of adsorption temperature of 140°C and loading capacity of 1g figure 1 The shown small-scale fixed-bed mercury adsorption experiment device was used for mercury rem...

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Abstract

The invention provides a preparation method of a mercury removal adsorbent for Indonesian oil sand tailings. The method includes: taking Indonesian oil sand tailings as raw materials, subjecting to high-temperature firing and digestion in water to obtain the mercury removal adsorbent for the Indonesian oil sand tailings. The mercury removal adsorbent has a certain mercury removal rate, the mercury removal rate is greatly increased after addition of a strong oxidant in a preparation process, and when the mass percent of the added strong oxidant reaches 1%, the mercury removal rate of the obtained mercury removal adsorbent reaches 95% or above. The preparation method of the mercury removal adsorbent for the Indonesian oil sand tailings is simple, free of secondary pollution in a manufacturing process and high in mercury adsorption rate, recycling of the oil sand tailings is realized, the problem of treatment of oil sand tailings which are hazardous solid wastes is solved, and remarkable economic benefits and environmental protection benefits are achieved.

Description

technical field [0001] The invention relates to the field of mercury removal adsorbents, in particular to a method for preparing an Indonesian oil sand tailings mercury removal adsorbent. Background technique [0002] Heavy metal mercury is a highly toxic pollutant that is extremely harmful to the ecological environment and human health. Its volatility, persistence and bioaccumulation effects can cause serious harm to the biological nervous system. Once mercury is introduced into the environment, it is difficult to eliminate , thus becoming a research hotspot. At present, the main cause of global mercury pollution is anthropogenic emissions, of which coal combustion emissions are the main ones. At present, the total amount of mercury emitted into the atmosphere by human beings is about 4000t every year in the world, and the emission of mercury in the flue gas of coal combustion can account for 33% of the total emission. The concentration of mercury in coal-fired flue gas i...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/30B01D53/02
CPCB01D53/02B01D2253/1124B01D2257/602B01J20/041B01J2220/4887
Inventor 李丹丹李茂森田原宇李娜
Owner SHANDONG UNIV OF SCI & TECH
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