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A method for preparing high-efficiency adsorbent by using fluidized bed gasification fly ash and industrial waste sulfuric acid

A fluidized bed gasification, waste sulfuric acid technology, applied in chemical instruments and methods, separation methods, gas treatment and other directions, can solve the problems of resource waste, fly ash on-site pollution, etc., to reduce pollution, solve dust pollution problems, process Simple process effect

Inactive Publication Date: 2020-12-29
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In order to overcome the deficiencies in the above-mentioned prior art and effectively solve the problems of fly ash on-site pollution and resource waste, the present invention proposes a method that effectively utilizes gasification fly ash and industrial waste sulfuric acid at the same time, turning waste into treasure, and A method for preparing high-efficiency adsorbents from fluidized bed gasification fly ash and high-concentration industrial waste sulfuric acid that produces certain economic benefits

Method used

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Examples

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Effect test

Embodiment 1

[0039] A method for preparing a high-efficiency adsorbent by gasifying fly ash and high-concentration industrial waste sulfuric acid in a fluidized bed, characterized in that, first, adding fly ash and raw coal masterbatch to a reactor with a stirring device according to the mass ratio of 1:1 , and stirred under airtight conditions for 0.7 hours. After the stirring is completed, add coking high-temperature coal tar (contains 9% naphthalene oil by mass and 21% anthracene oil by mass) into the reactor. Hour. Then, add industrial waste sulfuric acid with a weight percentage of 85% to the reactor, and the mass ratio of the added industrial waste sulfuric acid to coal tar, raw coal masterbatch and fly ash is 1.5:1. Stir for 10 minutes under closed condition of the reactor. During the reaction, gas A is generated and discharged from the upper part of the reactor. Finally, the mixed gas B is introduced from the bottom of the reactor, the volume concentration of oxygen in B is 2.5%,...

Embodiment 2

[0043] A method for preparing high-efficiency adsorbent by gasifying fly ash and high-concentration industrial waste sulfuric acid in a fluidized bed. It is characterized in that, first, fly ash and raw coal masterbatch are added into a reactor with a stirring device according to a mass ratio of 1.7:1, and stirred for 0.7 hours under airtight conditions. After the stirring is completed, add coking high-temperature coal tar (the mass contains 11% of naphthalene oil and 18% of anthracene oil) into the reactor, the mass ratio of the added coal tar to fly ash is 2.1:1, and stir under closed conditions 0.55 hours. Then, 80% by weight of industrial waste sulfuric acid is added to the reactor, and the mass ratio of the added industrial waste sulfuric acid to coal tar, raw coal masterbatch and fly ash is 3.1:1. Stir for 17 minutes under the closed condition of the reactor. During the reaction, gas A is generated and discharged from the upper part of the reactor. Finally, the mixed g...

Embodiment 3

[0047] A method for preparing high-efficiency adsorbent by gasifying fly ash and high-concentration industrial waste sulfuric acid in a fluidized bed. It is characterized in that, first, fly ash and raw coal masterbatch are added into a reactor with a stirring device according to a mass ratio of 2.0:1, and stirred for 0.8 hours under airtight conditions. After the stirring is completed, add coking high-temperature coal tar (the mass contains 12% of naphthalene oil and 22% of anthracene oil) into the reactor, the mass ratio of the added coal tar to fly ash is 3.5:1, and stir under closed conditions 0.65 hours. Then, add industrial waste sulfuric acid with a weight percentage of 90% to the reactor, and the mass ratio of the added industrial waste sulfuric acid to coal tar, raw coal masterbatch and fly ash is 4.6:1. Stir for 17 minutes under the closed condition of the reactor. During the reaction, gas A is generated and discharged from the upper part of the reactor. Finally, t...

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Abstract

The invention discloses a method for preparing a high-efficiency adsorbent with fluidized bed gasification fly ash and high-concentration industrial waste sulfuric acid. The method comprises the following steps: adding fly ash and raw coal masterbatch into a reactor R with a stirring device, and stirring; adding naphthalene oil and anthracene oil coal tar into the reactor R, and stirring; adding high-concentration waste sulfuric acid into the reactor R, stirring, and collecting generated gas; introducing a gas mixture of oxygen, water vapor and inert components or a gas mixture of ammonia andinert components from the bottom of the reactor R, reacting for 30 to 600 seconds, and collecting the generated gas. The stirring is carried out under closed conditions but for different time, and thematerials added into the reactor R are in a strict ratio. After the reaction, the material in the reactor R is an adsorbent, which has a large specific surface area, has high efficiency of adsorbingnaphthalene in coal gas, and can be desorbed and regenerated by hot nitrogen or hot clean coal gas, and the regeneration process is simple and easy. The method has the advantages of simple process, easy operation and low energy consumption, and can simultaneously treat two kinds of waste materials, such as fluidized bed gasification fly ash and waste sulfuric acid, and turn waste into treasure, and has remarkable environmental protection and economy efficiency.

Description

technical field [0001] The invention relates to the field of utilization of solid waste produced in a fluidized bed coal gasification process, in particular to a method for preparing a high-efficiency adsorbent by utilizing fluidized bed gasification fly ash and industrial waste sulfuric acid. Background technique [0002] Coal gasification technology, as the leader of coal chemical industry, has made great progress in recent years, and various new technologies are constantly emerging. The fluidized bed gasification process has good heat and mass transfer performance, and can use low-cost high-ash coal, high-sulfur coal, petroleum coke, lignite and other "low-value" hydrocarbons as raw materials to produce syngas (CO+H 2 ) and other characteristics, domestic ash fusion technology and foreign U-GAS technology belong to fluidized bed gasification technology. However, in the process of fluidized bed gasification, due to the collision and friction between particles in the furna...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/02B01D53/02
CPCB01D53/02B01D2257/602B01D2258/0283B01J20/02B01J2220/4887
Inventor 程相龙郭晋菊刘丽华赵小玲董文博宋成建张延兵王要令李晓燕李刚
Owner HENAN UNIV OF URBAN CONSTR