Exclusive bacteria and technology for removing organic sulfur in high sulfur coal mine through exclusive bacteria

An organic sulfur and desulfurization process technology, applied in microorganism-based methods, bacteria, petroleum industry, etc., can solve the problems of insufficient bacterial stability, low organic sulfur removal rate, single desulfurization mode, etc., to expand the scope of resource utilization, The effect of improving the comprehensive recycling level and expanding the utilization amount

Active Publication Date: 2017-03-29
有研资源环境技术研究院(北京)有限公司
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AI Technical Summary

Problems solved by technology

However, in terms of organic sulfur removal, there are still bottleneck technical problems such as single desul

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1

[0035] The coal used is from a sulfur-containing coal mine in Inner Mongolia. The sulfur in the coal is mainly in the form of pyrite, followed by organic sulfur, and less sulfur in the form of sulfate. The specific content is shown in Table 1.

[0036] Table 1 Sulfur content in coal mine

[0037] Total sulfur Pyrite Sulfur Organic sulfur Sulfate Sulfur Content / wt%3.352.210.820.32

[0038] condition:

[0039] The slurry concentration is 5%, pH value is 2.0-3.0, Retech TS-I bacteria inoculation amount is 10%, RetechOrganosulfur-I inoculation amount is 10%, shaker speed is 140r / min, temperature is 30-40°C, and the leaching period is 15d.

[0040] result:

[0041] Table 2 Test results

[0042] Total sulfur Organic sulfur Pyrite Sulfur Removal rate / wt% 76.7256.4886.26

[0043] According to the above conditions, the total sulfur removal rate reached 76.72% after 15 days of pretreatment, among which the organic sulfur removal rate was 56.48%, the sulfur removal rate in...

Example Embodiment

[0044] Example 2

[0045] The coal used is from a sulfur-containing coal mine in Outer Mongolia. The sulfur in the coal is mainly in the form of pyrite, followed by organic sulfur and sulfate. The specific content is shown in Table 3.

[0046] Table 3 Sulfur content in coal mine

[0047] Total sulfur Pyrite Sulfur Organic sulfur Sulfate Sulfur Content / wt%3.121.600.680.74

[0048] condition:

[0049] The slurry concentration is 5%, pH value is 2.0-3.0, Retech TS-I bacteria inoculation amount is 10%, RetechOrganosulfur-I inoculation amount is 10%, shaker speed is 140r / min, temperature is 30-40°C, and the leaching period is 15d.

[0050] result:

[0051] Table 4 Test results

[0052] Total sulfur Organic sulfur Pyrite Sulfur Removal rate / wt% 75.2460.1885.14

[0053] According to the above conditions, the total sulfur removal rate reached 75.24% after pretreatment for 15 days, among which the organic sulfur removal rate was 60.18%, the sulfur removal rate in pyrite was 85.14%, and the...

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PUM

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Abstract

The invention discloses exclusive bacteria and a technology for removing organic sulfur in high sulfur coal mine through the exclusive bacteria. The exclusive bacteria have a class name of Bacillus subtilis Retech Organosulfur-I, are preserved in the China general microbiological culture collection center in the microbiology institute with the address of No. 3, Beichen West Road, Chaoyang District, Beijing, China on the collection date of May 28, 2015, and has a preservation number of CGMCC No. 10933. The bacillus can degrade the organic sulfur in the coal mine under acidic and aerobic conditions, and through combination of the bacillus and the high efficiency desulfurization mixed strain Retech TS-I, inorganic sulfur is removed and effective total sulfur removal of high sulfur coal mine is realized. Compared with the conventional physical and chemical methods, the technology has the advantages of mild conditions, low cost and no harmful gas emission, and has a wide application prospect in the field of coal mine desulfurization.

Description

technical field [0001] The invention relates to the technical field of biological hydrometallurgy, in particular to an exclusive bacterium and its cultivation, which is applied to the removal process of organic sulfur in high-sulfur coal mines. Background technique [0002] Coal is the main energy source in our country, and the sulfur dioxide released from coal combustion seriously pollutes the environment. The average sulfur content of coal in my country is about 1.61wt%, and the sulfur content spans a large range, from ultra-low sulfur coal with a sulfur content of 0.04wt% to high-sulfur coal with a sulfur content of 9.62wt%. The sulfur content in coal is closely related to the depositional environment when coal was formed. The average sulfur content in coal is 3.23% in Southwest China, 3.05% in Northwest China, 2.02% in Central South China, 1.65% in North China, and 2% in Shandong Province. above. The combustion process of coal mines emits a large amount of soot, SO 2 ...

Claims

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Application Information

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IPC IPC(8): C12N1/20C10L9/00C12R1/125
Inventor 武彪尚鹤莫晓兰温建康
Owner 有研资源环境技术研究院(北京)有限公司
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