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Bio-trickling filter for producing sulphur by removing hydrogen sulfide and method thereof

A biological trickling filter tower, hydrogen sulfide technology, applied in the field of desulfurization, can solve the problems of waste, less investment, sulfur blockage, etc., and achieve the effects of uniform load, low operating cost, and large porosity

Pending Publication Date: 2017-05-10
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the current technology, the present invention provides a biological trickling filter tower and method for removing hydrogen sulfide to produce sulfur, which can ensure the purification efficiency of high-concentration hydrogen sulfide and obtain product sulfur, and optimize the process equipment at the same time to solve the problem. Problems such as sulfur blockage and waste in the process, and has the advantages of good treatment effect, low energy consumption, low investment, and no secondary pollution.

Method used

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  • Bio-trickling filter for producing sulphur by removing hydrogen sulfide and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] a. Mix 0.5 mol of ferric chloride solution and SiC according to the solid-liquid volume ratio of 1:3 to form a solid-liquid mixture.

[0060] b. Place the solid-liquid mixture in an ultrasonic generator, and ultrasonically treat it at 25Hz and 400W for 2~3h; filter the solution and dry it at 105℃ for 6h;

[0061] c. Calcining the dried sample at 400°C for 3 hours, cooling to room temperature after calcination, and then performing ultrasonic vibration for 60 minutes for 50 minutes to obtain the final product after vibration, namely the modified loaded biological filler, as the first filler layer and the second filler layer The filler; the doping amount of the modified loaded biological filler is n(Fe)=0.5-0.9%, and the airflow distribution plate 2 of the first filler layer in the biological trickling filter tower is placed 25cm away from the bottom of the tower.

[0062] d. The modified loaded biological filler of step c is statically preliminarily coated with the high-efficien...

Embodiment 2

[0065] a. Put the honeycomb SiC in the container, and then add 0.6 mol FeCl 3 Solution to form SiC and FeCl 3 According to the solid-liquid volume ratio 1:3.5 solid-liquid mixture.

[0066] b. Put the solid-liquid mixture in an ultrasonic generator, and use 20-25kHz ultrasonic treatment for 3 hours, filter the processed sample, and dry it at 105°C for 3 hours.

[0067] c. The dried sample obtained in step b is calcined, the temperature is controlled at 400-600°C, heated for 3 hours, and then cooled to room temperature with the furnace to obtain Fe / SiC filler, and then subjected to ultrasonic vibration for 60 minutes to obtain a modified loaded biological filler as The filler of the first packing layer and the second packing layer; the doping amount of the modified loaded biological filler is n(Fe)=0.5~0.9%, the airflow distribution plate 2 of the first packing layer in the biological trickling filter tower is at the distance from the tower Place at the bottom 25cm.

[0068] d. The m...

Embodiment 3

[0071] a. Put the honeycomb SiC in the container, and then add 1 mole of FeCl 3 Solution to form SiC and FeCl 3 According to the solid-liquid volume ratio 1:3 solid-liquid mixture.

[0072] b. Put the solid-liquid mixture in an ultrasonic generator, use 20-25kHz ultrasonic treatment for 2.5 hours, filter the processed sample, and dry it at 110°C for 4 hours.

[0073] c. Calcining the dried sample obtained in step b, controlling the temperature at 500°C, heating for 3 hours, and then cooling to room temperature with the furnace to obtain Fe / SiC filler, and then performing ultrasonic vibration for 60 minutes to obtain the modified loaded biological filler as the first The filler layer and the second filler layer; the doping amount of the modified loaded biological filler is n(Fe)=0.5~0.9%, the air distribution plate 2 of the first filler layer in the biological trickling filter tower is 25cm away from the bottom of the tower Placed at.

[0074] d. The modified loaded biological filler...

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Abstract

The invention belongs to the technical field of devulcanization, and relates to a bio-trickling filter for producing sulphur by removing hydrogen sulfide and a method thereof. The bio-trickling filter disclosed by the invention comprises a gas inlet part, a first filler layer, a first gas outlet part, a second filler layer and a spraying chamber which are arranged from bottom to top sequentially; each part is of a concentric cylinder or cube shape; a cone-shaped second gas outlet part is also arranged on the upper surface of the spraying chamber; a gas inlet is formed at the upper part of one side of the gas inlet part at the bottom, and the middle part of the other side of the gas inlet part is sequentially connected with a cone-shaped solid-liquid separation device and a lower tank; waste gas containing hydrogen sulfide is in reverse contact with biological desulfurization circulating liquid from top to bottom, which is pumped into the spraying chamber by the solid-liquid separation device and the lower tank, on a biological filler, and a biodegradation reaction is performed to generate the sulphur. The bio-trickling filter disclosed by the invention can ensure purification of high-concentration hydrogen sulfide, optimize process equipment and solve the problems of blockage, waste and the like of sulphur in a process, and has the advantages of good processing effect, low energy consumption, low investment, no secondary pollution and the like.

Description

Technical field [0001] The invention belongs to the technical field of desulfurization, and specifically relates to a biological trickling filter tower for removing hydrogen sulfide to produce sulfur and a method thereof. The method is aimed at the fields where hydrogen sulfide waste gas is discharged from some paper mills, coking plants, chemical plants, pharmaceutical plants, sewage treatment plants, landfills, etc., and has the advantages of good treatment effect, low energy consumption, low investment, and no secondary pollution. Background technique [0002] In recent years, H 2 As a product of certain chemical reactions and protein biodegradation processes, S often exists in a variety of production processes. For example, low-temperature coking of coal, non-ferrous metal smelting, rubber, tanning, dyes, sugar and other industries have H 2 S is produced. And the anaerobic treatment of garbage, sewage, and sludge is often accompanied by H 2 S exists. In industry, hydrogen s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/52C01B17/04
CPCB01D53/52B01D53/84C01B17/04B01D2251/95Y02A50/20
Inventor 任爱玲张瑾郭斌
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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