CN106467764A - A kind of methane bio-desulfurization system - Google Patents
A kind of methane bio-desulfurization system Download PDFInfo
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- CN106467764A CN106467764A CN201510513117.4A CN201510513117A CN106467764A CN 106467764 A CN106467764 A CN 106467764A CN 201510513117 A CN201510513117 A CN 201510513117A CN 106467764 A CN106467764 A CN 106467764A
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- nutritional solution
- desulfurization
- dissolved oxygen
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Abstract
The invention belongs to biogas desulfurization technical field, a kind of specifically related to methane bio-desulfurization system, the nutritional solution recycling is in bioreactor through aerator aeration, nutritional solution after heat exchange under desulfurizing tower top spray, from the biogas that desulfurization tower bottom is passed through in desulfurizing tower with nutritional solution hybrid reaction desulfurization after produce elemental sulfur rinsed by ultrasonic equipment.The present invention has simple to operate, desulfuration efficiency height, the strong feature of elemental sulfur disposal ability.
Description
Technical field
The invention belongs to biogas desulfurization technical field is and in particular to a kind of methane bio-desulfurization system.
Background technology
House refuse, changing food waste, feces of livestock and poultry, high concentrated organic wastewater, agricultural crop straw etc. are all biomass class materials, all can produce biogas by anaerobic fermentation.Biogas is a kind of biomass energy of cleaning, and biomass natural gas is produced in use of can cooking a meal, generating or purification, but the hydrogen sulfide containing in biogas can severe corrosion equipment and pipeline.It is necessary to remove hydrogen sulfide therefore before biogas utilization.
At present, hydrogen sulfide in methane removal methods mainly have：Dry desulfurization, wet desulphurization, biological desulphurization.Oxidation of Hydrogen Sulfide is become sulfur or sulfide using ferrum oxide by dry desulfurization.Wet desulphurization is with basic solvent as absorbent, and adds oxygen carrier to be catalyst, absorbs hydrogen sulfide and is converted into elemental sulfur.Dry desulfurization and wet desulphurization belong to physico-chemical process, are required to absorbent during the course of the reaction, and operating cost is high.Biological desulphurization receives environmental protection sector and generally favors in recent years.
Biological desulphurization is, using biological oxidation, the Oxidation of Hydrogen Sulfide in biogas is become elemental sulfur, thus the method that hydrogen sulfide in methane is removed.With respect to dry desulfurization and wet desulphurization, biological desulfurization process does not need absorbent, and therefore operating cost is low.And current biological desulfurization method has that desulfurization rear impurity gas oxygen content increases, elemental sulfur does not wash clean clearly, the shortcoming that longtime running leads to the pipeline blockage in packing layer.
Content of the invention
In existing biological desulphurization system, it is typically the microorganism oxygen supply in desulfurizing tower by way of the direct air blast of blower fan, this offering oxygen way is difficult to control oxygen intake, once oxygen supply excessively leads to too high oxygen level in the biogas that desulfurizing tower is excluded, have the danger of potential blast, meanwhile, while blasting air, also by the air, the other components in addition to oxygen blast in desulfurizing tower, are finally mixed into biogas.So although having purified the H in biogas2S, increased other impurities simultaneously, is that subsequent purification purifies increase difficulty.
The problem existing for existing biological desulfurization process, it is an object of the invention to provide the biological desulfurization method that a kind of operating cost is low, desulfuration efficiency is high, packing layer cleans up, the concept of dissolved oxygen is applied in biogas desulfurization system, be dissolved in water using saturation or nutritional solution in oxygen be the microorganism oxygen supply in desulfurizing tower, concrete content of the invention is as follows.
A kind of methane bio-desulfurization system of the present invention includes：
（1）Nutritional solution is in bioreactor through aerator aeration；
（2）Nutritional solution is after heat exchange under desulfurizing tower top spray；
（3）The biogas being passed through from desulfurization tower bottom in desulfurizing tower with nutritional solution hybrid reaction desulfurization
（4）The elemental sulfur producing is rinsed by ultrasonic equipment.
Dissolved oxygen in the nutritional solution that air blast ventilation Posterior circle uses is saturation, no gaseous oxygen.
Nutritional solution adopts the medicament configuration containing nitrogen source, phosphorus source and potassium resource for the process water dissolving, and wherein, nitrogen content is 3.0～15.0%, and phosphorus content is 0.5～5.0%, potassium content 0.2～4.0%.Saturated dissolved oxygen amount is monitored by DO dissolved oxygen controller and controls.DO dissolved oxygen controller sets bound independence alarm point, controls aerator start and stop.
In desulfurizing tower, packing layer is 1 ~ 3 layer of filling-material structure layer, is provided with nutritional solution spray assemblies above every layer of packing layer.
Boiler hot-water passes through heat exchanger heat exchange with spray piping nutritional solution, and solution temperature controls at 29-33 DEG C.
Brief description
Fig. 1 is the structural representation of methane bio-desulfurization system.
In figure, 1, air inlet pipe 2, desulfurizing tower 3, escape pipe 4, filler 5, spray head 6, aerator 7, spray pump 8, nutritional solution water inlet pipe 9, hot water inlet pipe 10, hot water return pipe 11, nutritional solution outlet pipe 12, DO dissolved oxygen controller 13, ultrasonic washing unit 14, filling pipe 15, bioreactor 16, heat exchanger.
Specific embodiment
The present invention will be further described with accompanying drawing with reference to embodiments
This desulphurization system includes desulfurizing tower 2, desulfurizing tower 2 bottom and top are respectively provided with air inlet pipe 1 and escape pipe 3, it is filled with filler 4 in desulfurizing tower, filler 4 is connected with ultrasonic washing unit 13, the top of filler 4 is provided with spray head 5, the 4 of desulfurizing tower be provided with nutritional solution water inlet pipe 8, nutritional solution outlet pipe 11, nutritional solution outlet pipe is communicated to bioreactor 15, bioreactor is provided with filling pipe 14, bioreactor 15 one end is connected with aerator 6, it is provided with DO dissolved oxygen controller 12, bioreactor 15 other end is connected with spray pump 7, nutritional solution water inlet pipe is connected with heat exchanger 16, hot water inlet pipe 9 and hot water return pipe 10 are had on heat exchanger 16.
Using aerator 6, air proportion is passed through in bioreactor 15, nutritional solution is discharged in bioreactor 15, dissolved oxygen in nutritional solution sprays packing layer by spray pump after reaching saturation after heat exchanger heat exchange, react with the biogas entering from desulfurization tower bottom, hydrogen sulfide therein is reacted into elemental sulfur, purified gas exports from desulfurizing tower 2 and discharges, and completes desulfurization.
The sulfur timing that reaction generates is cleaned by ultrasonic equipment.
Add nutrient substance in bioreactor 15 at set intervals, to maintain the growth of desulfurizing bacteria.
The dissolved oxygen in nutritional solution after described air blast 6 ventilation is saturation, no gaseous oxygen.
Described saturated dissolved oxygen amount is monitored and is controlled by DO dissolved oxygen controller 12.
DO dissolved oxygen controller sets bound independence alarm point, controls aerator 6 start and stop.
Described boiler hot-water passes through heat exchanger 16 heat exchange with spray piping nutritional solution, and solution temperature controls at 29-33 DEG C.
Above-mentioned detailed description is illustrating for possible embodiments of the present invention, and this embodiment simultaneously is not used to limit the scope of the claims of the present invention, equivalence enforcement or change that all disengaging present invention do, is intended to be limited solely by the scope of the claims of this case.
Claims (6)
1. a kind of methane bio-desulfurization system is it is characterised in that described system includes：
（1）Nutritional solution is in bioreactor through aerator aeration；
（2）Nutritional solution is after heat exchange under desulfurizing tower top spray；
（3）The biogas being passed through from desulfurization tower bottom in desulfurizing tower with nutritional solution hybrid reaction desulfurization
（4）The elemental sulfur producing is rinsed by ultrasonic equipment.
2. methane bio-desulfurization system according to claim 1 is it is characterised in that the dissolved oxygen content in the nutritional solution of ventilation Posterior circle use reaches saturation, no gaseous oxygen.
3. the methane bio-desulfurization system according to claim 1, it is characterized in that described nutritional solution adopts the medicament configuration containing nitrogen source, phosphorus source and potassium resource for the process water dissolving, wherein, nitrogen content is 3.0～15.0%, phosphorus content is 0.5～5.0%, potassium content 0.2～4.0%.
4. methane bio-desulfurization system according to claim 1 is it is characterised in that saturated dissolved oxygen amount is monitored by DO dissolved oxygen controller and controls.
5. DO dissolved oxygen controller according to claim 3 can set bound independence alarm point, controls aerator start and stop.
6. it is characterised in that boiler hot-water passes through heat exchanger heat exchange with spray piping nutritional solution, solution temperature controls at 29-33 DEG C methane bio-desulfurization system according to claim 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510513117.4A CN106467764A (en) | 2015-08-20 | 2015-08-20 | A kind of methane bio-desulfurization system |
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| CN201510513117.4A CN106467764A (en) | 2015-08-20 | 2015-08-20 | A kind of methane bio-desulfurization system |
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| CN106467764A true CN106467764A (en) | 2017-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751608A (en) * | 2022-03-10 | 2022-07-15 | 上海市政工程设计研究总院（集团）有限公司 | Gas-liquid two-phase internal desulfurization efficient anaerobic digestion tank |
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| CN101984026A (en) * | 2010-11-09 | 2011-03-09 | 浙江大学 | Integrated methane biological desulphurization device |
| CN201817453U (en) * | 2010-10-27 | 2011-05-04 | 青岛天人环境股份有限公司 | External aeration biological desulfuration device for marsh gas |
| CN103071378A (en) * | 2013-01-11 | 2013-05-01 | 中国科学院广州能源研究所 | Two-stage biological desulfuration device of marsh gas |
| CN203389526U (en) * | 2013-08-16 | 2014-01-15 | 郑州蓝德环保科技有限公司 | Biological desulphurization device |
| CN103571556A (en) * | 2013-09-16 | 2014-02-12 | 杭州能源环境工程有限公司 | Washing device and washing method for fillers of biological desulfurization tower |
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2015
- 2015-08-20 CN CN201510513117.4A patent/CN106467764A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201817453U (en) * | 2010-10-27 | 2011-05-04 | 青岛天人环境股份有限公司 | External aeration biological desulfuration device for marsh gas |
| CN101984026A (en) * | 2010-11-09 | 2011-03-09 | 浙江大学 | Integrated methane biological desulphurization device |
| CN103071378A (en) * | 2013-01-11 | 2013-05-01 | 中国科学院广州能源研究所 | Two-stage biological desulfuration device of marsh gas |
| CN203389526U (en) * | 2013-08-16 | 2014-01-15 | 郑州蓝德环保科技有限公司 | Biological desulphurization device |
| CN103571556A (en) * | 2013-09-16 | 2014-02-12 | 杭州能源环境工程有限公司 | Washing device and washing method for fillers of biological desulfurization tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751608A (en) * | 2022-03-10 | 2022-07-15 | 上海市政工程设计研究总院（集团）有限公司 | Gas-liquid two-phase internal desulfurization efficient anaerobic digestion tank |
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Application publication date: 20170301 |