CN102977962A - Recovery power generation technology of methane generated by paper-making wastewater treatment - Google Patents
Recovery power generation technology of methane generated by paper-making wastewater treatment Download PDFInfo
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- CN102977962A CN102977962A CN2012104559523A CN201210455952A CN102977962A CN 102977962 A CN102977962 A CN 102977962A CN 2012104559523 A CN2012104559523 A CN 2012104559523A CN 201210455952 A CN201210455952 A CN 201210455952A CN 102977962 A CN102977962 A CN 102977962A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses recovery power generation technology of methane generated by paper-making wastewater treatment. First, the methane generated by a paper-making wastewater anaerobic treatment system is conveyed to a methane pressure-stabilizing cabinet for pressure stabilization; then the methane is conveyed to a desulfurization system for desulfurization treatment; the content of hydrogen sulfide (H2S) decreases from 200 grams per liter to 0.05 gram per liter after the desulfurization treatment; then the methane after the desulfurization treatment is conveyed to a methane storage tank for collection and conveyed into a drier through a draught fan for dehydration and drying until no free water exists in the methane, and the water content of the methane is lower than 40 grams per cubic nanometer; then the methane after being dried passes through a filter for filtration treatment, large grained impurities in the methane is filtered out; finally, the methane after filtration is conveyed to a methane generating set for power generation; and the front end of the methane generating set is provided with a fire arrestor device so that the burning methane is prevented from returning to the device at the front end. The recovery power generation technology of the methane generated by the paper-making wastewater treatment not only effectively solves the environment problems caused by methane drainage but also well uses methane resources to produce considerable economic value.
Description
Technical field
The present invention relates to methane recovery and utilize technical field, be specifically related to the recovery electrification technique as well as that the paper waste system for anaerobic treatment produces biogas.
Background technology
Paper waste produces a large amount of biogas in the anaerobic treatment process, biogas is the biomass gas that is rich in methane, and methane content is up to more than 70%, and calorific value is slightly higher than town gas, is extraordinary geseous fuel, has good utility value.Biogas also is pollution gas simultaneously, contains stench or the irritant gass such as sulfide gas (organic sulfides such as hydrogen sulfide, mercaptan, thioether, thiophene), ammonia, halogen gas, has a strong impact on atmosphere quality.The in addition methane in the biogas or by force greenhouse gases, its equivalent quality is 21 times of carbonic acid gas.Therefore recycling biogas has multiple economic worth and environmental value.
In the prior art, biogas is transported to the biogas torch, burns in torch, reaches the purpose of processing biogas.The processing mode of this torch burning is mainly considered the security of firedamp drainage, and reckons without the utility value of biogas.
Summary of the invention
The object of the present invention is to provide the recovery electrification technique as well as that produces biogas in a kind of paper waste anaerobic treatment process.This processing method is generated electricity biogas on the spot as fuel used to generate electricity, can avoid firedamp drainage that environment is brought pollution, simultaneously biogas is fully utilized, and is to integrate environmental protection and energy-conservation comprehensive utilization of resources new technology.
For achieving the above object, the technical solution used in the present invention is the paper waste system for anaerobic treatment to be produced biogas send into the methane-desulfurizing device desulfurization, and the biogas after the processing is delivered to Biogas Generator Set and generated electricity.Concrete steps are as follows:
The first step: paper waste system for anaerobic treatment generation biogas is sent into methane voltage-stabilizing cabinet and is carried out voltage stabilizing.
Second step: because the H2S content in the biogas is about 200g/L, needs to send desulphurization system to carry out desulfurization biogas and process, the H2S after processing in the biogas is reduced to below the 0.05g/L.
The 3rd step: the biogas after desulfurization is processed is sent in the gas-holder and is collected, and is sent in the drying machine by blower fan to dehydrate again, and is dried in the biogas without the state of free-water, and its water content is lower than 40g/Nm
3
The 4th step: dried biogas filters out the large granular impurity in the biogas through the strainer filtration treatment, and filtering accuracy is 5 μ m, and the impurity granularity is less than 5 μ m in the biogas after filtering, and foreign matter content is lower than 30mg/Nm
3
The 5th step: the biogas after the filtration is sent to Biogas Generator Set and generates electricity, and the Biogas Generator Set front end arranges the spark arrester device, and the biogas of avoiding burning is got back in the front unit.
The electric energy that Biogas Generator Set produces is delivered to the paper system and is utilized.
The high-temperature flue-gas that Biogas Generator Set produces can reach 600 ° of C, for waste heat recovery, high-temperature flue gas is sent in the waste heat boiler, the water that enters waste heat boiler is heated into steam, and steam is delivered to the paper system recycle.
Adopt paper waste system for anaerobic treatment of the present invention to produce the recycling system of biogas, can be effectively with after biogas desulfurization, drying, the filtration treatment, send into Biogas Generator Set, 1Nm3 biogas (methane concentration is 70%) can generate electricity 2.43kwh, existing company Waste Water Treatment can produce biogas 30000Nm3 every day, all can obtain generated energy 7.29 ten thousand kwh every day for generating.Need to consume 3.5 tons of calculating of mark coal by per ten thousand kwh electric weight, can save 25.515 tons in mark coal every day, can save 8675 tons of mark coals every year, economic benefit is very considerable.
Description of drawings
Fig. 1 is that paper waste of the present invention is processed the recovery electrification technique as well as that produces biogas.
Embodiment
Paper waste of the present invention is processed the recovery electrification technique as well as that produces biogas, at first paper waste system for anaerobic treatment generation biogas is sent into methane voltage-stabilizing cabinet and carries out voltage stabilizing; Because the H2S content in the biogas is about 200g/L, need to send desulphurization system to carry out desulfurization biogas and process, the H2S after processing in the biogas is reduced to below the 0.05g/L; Biogas after desulfurization is processed is sent in the gas-holder and is collected, and is sent in the drying machine by blower fan to dehydrate again, and (water content is lower than 40g/Nm to be dried in the biogas state without free-water
3); Dried biogas filters out the large granular impurity in the biogas through the strainer filtration treatment, and filtering accuracy is 5 μ m, and the impurity granularity is less than 5 μ m in the biogas after filtering, and foreign matter content is lower than 30mg/Nm
3Biogas after the filtration is sent to Biogas Generator Set and generates electricity, and the Biogas Generator Set front end arranges the spark arrester device, and the biogas of avoiding burning is got back in the front unit.The electric energy that Biogas Generator Set produces is delivered to the paper system and is utilized; The high-temperature flue-gas that Biogas Generator Set produces can reach 600 ° of C, for waste heat recovery, high-temperature flue gas is sent in the waste heat boiler, the water that enters waste heat boiler is heated into steam, and steam is delivered to the paper system recycle.
Claims (4)
1. a paper waste is processed the recovery electrification technique as well as that produces biogas, and its processing step is as follows:
The first step: paper waste system for anaerobic treatment generation biogas is sent into methane voltage-stabilizing cabinet and is carried out voltage stabilizing;
Second step: because the H2S content in the biogas is 200g/L, needs to send desulphurization system to carry out desulfurization biogas and process, the H2S after processing in the biogas is reduced to below the 0.05g/L;
The 3rd step: the biogas after desulfurization is processed is sent in the gas-holder and is collected, and is sent in the drying machine by blower fan to dehydrate again, and is dried in the biogas without the state of free-water, and its water content is lower than 40g/Nm
3
The 4th step: dried biogas filters out the large granular impurity in the biogas through the strainer filtration treatment;
The 5th step: the biogas after the filtration is sent to Biogas Generator Set and generates electricity, and the Biogas Generator Set front end arranges the spark arrester device, and the biogas of avoiding burning is got back in the front unit.
2. paper waste according to claim 1 is processed the recovery electrification technique as well as that produces biogas, it is characterized in that: the electric energy that Biogas Generator Set produces is delivered to the paper system and is utilized.
3. paper waste according to claim 1 is processed the recovery electrification technique as well as that produces biogas, it is characterized in that: the high-temperature flue-gas that Biogas Generator Set produces can reach 600 ° of C, high-temperature flue gas is sent in the waste heat boiler, the water that enters waste heat boiler is heated into steam, and steam is delivered to the paper system recycle.
4. paper waste according to claim 1 is processed the recovery electrification technique as well as that produces biogas, and it is characterized in that: described strainer filtering accuracy is 5 μ m, and the impurity granularity is less than 5 μ m in the biogas after filtering, and foreign matter content is lower than 30mg/Nm
3
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| CN2012104559523A CN102977962A (en) | 2012-11-14 | 2012-11-14 | Recovery power generation technology of methane generated by paper-making wastewater treatment |
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| CN2012104559523A CN102977962A (en) | 2012-11-14 | 2012-11-14 | Recovery power generation technology of methane generated by paper-making wastewater treatment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099243A (en) * | 2014-06-30 | 2014-10-15 | 张强 | Power generation system utilizing biogas generated by alcohol mash |
| CN104454151A (en) * | 2014-10-15 | 2015-03-25 | 秦林 | Improved methane power generation device |
| CN108036349A (en) * | 2017-11-30 | 2018-05-15 | 重庆三峰环境产业集团有限公司 | A kind of multipath makes full use of the system and method for biogas |
| CN109554401A (en) * | 2017-09-26 | 2019-04-02 | 三富有限公司 | Industrial methane power generation and cleaning stalk slurrying linkage method |
| DE102018003969A1 (en) * | 2018-05-16 | 2019-11-21 | Meri Environmental Solutions Gmbh | Method and device for drying preferably a moving material web with at least one biogas-heated drying device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269901A (en) * | 2008-05-13 | 2008-09-24 | 广西丽桂环保科技有限公司 | Comprehensive approach for process and cyclic utilization of sewage water |
| CN101838952A (en) * | 2010-05-12 | 2010-09-22 | 陕西福辰环保科技有限公司 | Biogas hot-air paper board drying system |
| CN202390419U (en) * | 2012-01-16 | 2012-08-22 | 浙江荣晟环保纸业股份有限公司 | System for recycling methane during papermaking wastewater treatment |
-
2012
- 2012-11-14 CN CN2012104559523A patent/CN102977962A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269901A (en) * | 2008-05-13 | 2008-09-24 | 广西丽桂环保科技有限公司 | Comprehensive approach for process and cyclic utilization of sewage water |
| CN101838952A (en) * | 2010-05-12 | 2010-09-22 | 陕西福辰环保科技有限公司 | Biogas hot-air paper board drying system |
| CN202390419U (en) * | 2012-01-16 | 2012-08-22 | 浙江荣晟环保纸业股份有限公司 | System for recycling methane during papermaking wastewater treatment |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099243A (en) * | 2014-06-30 | 2014-10-15 | 张强 | Power generation system utilizing biogas generated by alcohol mash |
| CN104099243B (en) * | 2014-06-30 | 2016-03-30 | 张强 | A kind of alcohol mash form methane generating system |
| CN104454151A (en) * | 2014-10-15 | 2015-03-25 | 秦林 | Improved methane power generation device |
| CN109554401A (en) * | 2017-09-26 | 2019-04-02 | 三富有限公司 | Industrial methane power generation and cleaning stalk slurrying linkage method |
| CN108036349A (en) * | 2017-11-30 | 2018-05-15 | 重庆三峰环境产业集团有限公司 | A kind of multipath makes full use of the system and method for biogas |
| DE102018003969A1 (en) * | 2018-05-16 | 2019-11-21 | Meri Environmental Solutions Gmbh | Method and device for drying preferably a moving material web with at least one biogas-heated drying device |
| US11795617B2 (en) | 2018-05-16 | 2023-10-24 | Meri Environmental Solutions Gmbh | Method and apparatus for drying preferably a moving material web by means of at least one drying device heated by means of biogas and comprising infrared radiators |
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Application publication date: 20130320 |