Anaerobic fermentation pre-desulfurization method and device

An anaerobic fermentation and anaerobic fermenter technology, which is applied in the field of anaerobic fermentation pre-desulfurization methods and devices, can solve the problems of high desulfurization cost, low gas production efficiency, instability, etc., so as to improve desulfurization efficiency, reduce desulfurization load, Labor saving effect

Inactive Publication Date: 2016-09-28
南京慧淳环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing anaerobic fermentation desulfurization systems use dry desulfurization, wet desulfurization, biological desulfurization, etc. directly after gas production. Since the gas produced in this way is not pretreated for desulfurizatio

Method used

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  • Anaerobic fermentation pre-desulfurization method and device

Examples

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Example Embodiment

[0033] Example 1

[0034] Such as figure 1 As shown in, the anaerobic fermentation pre-desulfurization method of the present invention includes the following steps:

[0035] Step 1: Take a sample of biogas in the anaerobic fermentation gas storage chamber 8 on the top of the anaerobic fermentation tank;

[0036] Step 2: Detect the hydrogen sulfide content in the extracted biogas sample;

[0037] Step 3: According to the detected hydrogen sulfide content, when the hydrogen sulfide content is higher than 1000ppm, 3%-5% of the air produced in the fermentation tank is passed into the anaerobic fermentation air storage chamber (8), and the following reaction formula To carry out a chemical reaction:

[0038] H2S + 2O2 = H2SO4

[0039] H2S + O22 = 2S + 2H2O

[0040] S + H2O + 1.5O22=H2SO4;

[0041] Step 4: After the chemical reactions in step three are fully reacted, re-draw the biogas sample in the anaerobic fermentation gas storage chamber 8 to detect the hydrogen sulfide content in the extr...

Example Embodiment

[0044] Example 2

[0045] Such as figure 1 As shown in, the anaerobic fermentation pre-desulfurization method of the present invention includes the following steps:

[0046] Step 1: Take a sample of biogas in the anaerobic fermentation gas storage chamber 8 on the top of the anaerobic fermentation tank;

[0047] Step 2: Detect the hydrogen sulfide content in the extracted biogas sample;

[0048] Step 3: According to the detected hydrogen sulfide content, when the hydrogen sulfide content is higher than 1000ppm, 3% of the air produced in the fermentation tank is introduced into the anaerobic fermentation air storage chamber (8), and the chemical reaction is carried out through the following reaction formula :

[0049] H2S + 2O2 = H2SO4

[0050] H2S + O22 = 2S + 2H2O

[0051] S + H2O + 1.5O22=H2SO4;

[0052] Step 4: After the chemical reactions in step three are fully reacted, re-draw the biogas sample in the anaerobic fermentation gas storage chamber 8 to detect the hydrogen sulfide conte...

Example Embodiment

[0053] Example 3

[0054] Such as figure 1 As shown in, the anaerobic fermentation pre-desulfurization method of the present invention includes the following steps:

[0055] Step 1: Take a sample of biogas in the anaerobic fermentation gas storage chamber 8 on the top of the anaerobic fermentation tank;

[0056] Step 2: Detect the hydrogen sulfide content in the extracted biogas sample;

[0057] Step 3: According to the detected hydrogen sulfide content, when the hydrogen sulfide content is higher than 1000ppm, pass 5% of the air produced in the fermentation tank into the anaerobic fermentation air storage chamber (8), and carry out the chemical reaction through the following reaction formula :

[0058] H2S + 2O2 = H2SO4

[0059] H2S + O22 = 2S + 2H2O

[0060] S + H2O + 1.5O22=H2SO4;

[0061] Step 4: After the chemical reactions in step three are fully reacted, re-draw the biogas sample in the anaerobic fermentation gas storage chamber 8 to detect the hydrogen sulfide content in the extr...

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Abstract

The invention discloses an anaerobic fermentation pre-desulfurization method and device. The anaerobic fermentation pre-desulfurization method comprises the following steps: step 1: extracting a marsh gas sample located in an anaerobic fermentation gas storage cavity (8) at the top of an anaerobic fermentation tank; step 2: detecting the content of hydrogen sulfide in the extracted marsh gas sample; and step 3: according to the content of the hydrogen sulfide, introducing air which is 3%-5% of the gas yield of the fermentation tank into the anaerobic fermentation gas storage cavity (8) when the content of the hydrogen sulfide is higher than 1000ppm. The pre-desulfurization device comprises the anaerobic fermentation gas storage cavity (8) mounted at the top of the anaerobic fermentation tank, an air pump (1), an air pipeline (5), a check valve (2), an adjusting valve (3) and a flow meter (4), wherein the air pipeline (5) is used for communicating the air pump to the anaerobic fermentation gas storage cavity (8); the check valve (2) is arranged on the air pipeline (5); the adjusting valve (3) is arranged on the air pipeline (5); and the flow meter (4) is arranged on the air pipeline (5). The rear-end desulfurization cost of a fermentation system is directly reduced, the rear-end desulfurization load is alleviated and the rear-end desulfurization efficiency is improved.

Description

technical field [0001] The invention belongs to the field of anaerobic fermentation, and relates to an anaerobic fermentation pre-desulfurization method and device. Background technique [0002] Most of the existing anaerobic fermentation desulfurization systems use dry desulfurization, wet desulfurization, biological desulfurization, etc. directly after gas production. Since the gas produced in this way is not pre-treated for desulfurization, the final desulfurization cost is higher. In addition, due to the low gas production efficiency and unstable factors of the existing anaerobic fermentation system, it is impossible to directly use the pre-desulfurization system for primary desulfurization. Contents of the invention [0003] Aiming at the problems in the prior art, the present invention provides an anaerobic fermentation pre-desulfurization method that directly performs pre-desulfurization treatment in an anaerobic fermentation device, thereby reducing the cost of des...

Claims

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Application Information

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IPC IPC(8): B01D53/76B01D53/52C10L3/10
CPCB01D53/52B01D53/76B01D2251/102B01D2251/11B01D2257/304B01D2258/05B01D2259/122C10L3/103Y02E50/30
Inventor 祁彦涛张秉志戴民
Owner 南京慧淳环保科技有限公司
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