Mang Hangzhou October 2010

8/8/2019 Mang Hangzhou October 2010

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Problems and Solutions

of Biogas PlantEngineering and

Construction in ChinaHeinz-Peter Mang & Prof. Dr.-Ing. Li Zifu

Centre for Sustainable Environmental Sanitation at theUniversity of Science and Technology Beijing

(www.susanchina.cn)/Centre of International Migration and Development-GTZ

(www.cimonline.de)/German Society for Sustainable Biogas and Bioenergy Utilisation

(www.gerbio.org)

4th China (Hangzhou) International Clean Energy & EnvironmentProtection Industry Fair 2010

15-10-2010
http://www.susanchina.cn/http://www.cimonline.de/http://www.gerbio.org/http://www.gerbio.org/http://www.cimonline.de/http://www.susanchina.cn/


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Contents

1. CDM-Biogas-Networking in China

2. Biogas in China where we are?3. Biogas plant performance in China

4. Quality standard control system

5. Improve Chinas biogas plant quality


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CDM-Biogas-Networking in China

Promoted since 2005 with integrated expert staff supported through theGerman Centre for International Migration and Development CIMGTZ (www.cimonline.de), a CDM-biogas network has been establishedin China, where Chinese institutions and companies in cooperationwith European partners - are cooperating to obtain best practice biogasprojects and to gain experience in the development and implementationand monitoring of CDM-biogas activities:

University of Science and Technology Beijing Centre for Sustainable Environmental Sanitation

Chinese Academy of Agricultural Engineering / Hongyuan Energy and Environment Co., Ltd.

Oasis Technology and Development Co., Ltd. / UPM Environment Project Financing and Management Co, Ltd.

Institute of Biology of the Chinese Academy of Science / Chengdu DeTong Environment Engineering Co., Ltd German Bio Energy Technology (Beijing) Co., Ltd.

Camco International AG / ClearWorld Energy

International Biogas and Bioenergy Competence Centre (IBBK)

German Society for Sustainable Biogas and Bioenergy Utilisation (GERBIO FnBB e.V.)
http://www.cimonline.de/http://www.cimonline.de/


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Center for Sustainable Environmental

Sanitation - CSES mission Capacity building through

training-on-job of Chinese andinternational young

professionals Teaming of young

professionals with experiencedChinese and internationalsenior experts

Creating a multi-lingualworking atmosphere forsucessful Sino-Internationalcooperations.


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Contents






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http://www.dbfz.de/web/fileadmin/user_upload/biogasworkshop/Document/20100420_GTZ_Biomass_Project_LEIPZIG_CN-EN.pdf


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0

2000

4000

6000

8000

10000

2000 2005 2010 2015 2020 2025

n

yr

MLBGP development in Germany 19922008 & in China till 2007, forecast2020

Installed capacity1835MWel in2009

N

umberofMLBGP

lants

China MSBGPdevelopment

Compared toGermany, Chinahas in 20092.5x moreMLBGPs but only

10% of thecapacity togenerate biogaselectricity isinstalled 2009



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Biogas and CDM baselineCurrent CH4 emission, which is finally the basis for CER calculation, depends very much on current AWMS!

CH4 Emission

100% of potential

max. 70% possible

CH4 Emission (in warm climate)

CH4 Emission (in cold climate)

Decreasing anaerobic condition


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Agricultural WasteManagement Systems


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Contents






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154 Specific Biogas production capacity (nm3/m3/d) against Plant

capacity

0.00

0.50

1.00

1.50

2.00

2.50

3.00

0 50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000

S

pecificBGproductioncapacity

n(m3/m3.d

)

Plant size (feedstockprocessing capacity t/yr)


performance

limit


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Identified design and operational challenges

Receiption and pretreatmentof feedstock

Operational and designrelated biogas leakages

Disturbing materialseparation

Emergency measures anddimensionings

Biological processperformance control

Biogas quantity per digester

volume /substrate unit Bacteria retaining Post-treatment to avoid

secondary polution

CHP-/electricity generatorplacement / siting

Grid stability / load shading CHP performance Automated governing and

operation Biogas purification /upgrading

Monitoring and measurementtechnique

Digester heating and

insulation Mixing and steering devices Substrate pumping and

piping


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The CHP is the "dairy cow" of the

energy farmer!

A CHP must achieve abusiness share of at least 90-95% or 8 000 operationalhours / year for mostinstallations, so that thesystem works economically.

In other words: 3-4 weeksfailure make the efficiency ofthe plant in question.

Ignition jet injectors (coked,clogged, too often exchanged),

Leaks (water, oil), Turbo-charger broken, water

pump defective,

Incomplete biogas conditioning(filtering, cooling),

No sensors to determineoperating conditions.


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Pumps and Stirrers If the fermenter content is not

optimally stirred, the gas yieldlowers.

In particular with high solidcontents significant floating

ceilings form within a very shorttime when insufficient stirred.

Stir is important for the heattransfer into the substrate.

Wear parts at agitators are allrotating parts. They must be easilyaccessible for maintenance andrepairs without having to leave thefermenter wholly or in part.

Entry of too longfibres,

High wearing,

Low performance,

Too weakdimensioned.


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Construction and design quality

The repeatedly occurringbreakdowns and stoppagesover time due to: tank remediation (concrete),

tank emptying (sediment sand), tank emptying (repair of stirring

or heating technology),

disorder of biology,

failure of CHP with often weeks,

are the cause of inefficientdesign and construction ofmany biogas plants.

Concrete attacked byacids

Leaks (liquid, gas)

No coating of sensible

surfaces

Insufficient insulation


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Construction sites


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Operator qualification Economic success is

in question withoutwell-trained

operators. The contractors

should introduceoperators well into the

technology of theirinvestments.


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Operation over 7 or 21 years?


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Operational monitoring


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Monitoring Methodology

Monitoring plan:

Monitor baseline emissions

Monitor project emissions Monitor leakages

Estimation and calculation of emission reductions

Address the uncertainty (data)

Quality assurance/Quality control Monitoring management

Designated system/human resourcesBe consistent with the algorithm/methodology used to estimate the Baseline andProject emissions


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CDM-Monitoring


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Contents


2. Biogas in China where we are?

3. Biogas plant performance in China


5. Improve Chinas biogas plant quality6. Summary


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Quality assurance based on minimum

quality requirements to ensure the

successful operation of biogas plants.

1. The plant design2. Requirements for the components

3. Components with high requirements4. Operator qualification5. Quality assurance and control


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Targets of quality guidelines

1. The definition of quality guidelines and standards must includeprofessional and public opinions. These are constantly updated by anindependent quality committee.

2. Verifiable technology standards to create meaningful minimumrequirements.

3. Following the standards, the approval procedure by Government is easily.

4. Facilities for applying for funding.

5. Certification of construction or manufacturers companies should be basedon the quality guidelines and done by an independent test institute.

6. Guarantee and warranty transfer on product quality and function ofcomponents and engineering.

7. Ensure good maintenance and repair work. All wear parts must beaccessible to be repaired or replaced without significant limitation of theoperation.

8. Control of companies through regular review and recertification.


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Advantages for equipment manufacturersand component suppliers

High decision security through standards.

Seal of approval increases the acceptance.

Internal operations are optimized.

Vulnerabilities are recognized and eliminated.

Return and reclamation costs are reduced.


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Benefits for plant operators and

investors Higher and tested design and construction quality.

Legal provisions are safely fulfilled.

Clearly defined contract and warranty conditions for plant

and components to proof the financial viability. Optimized process by defined procedures.

Each component is aligned into the system.

Longer lifetime through high quality material.

Less operational errors through streamlined workflows. Less downtime for repairs and maintenance.

Contractors must demonstrate and assure to the operatorsthat the systems works economically.


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Contents


2. Biogas in China where we are?

3. Biogas plant performance in China


5. Improve Chinas biogas plantquality


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Import or Joint venture for key

equipments


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Rhodia 2010 Overview Energy Services

Chinese Ethanol Effluent PlantExecuted by: Rhodia

Period: 2008-2010

Site: Ethanol Plant, China

Capacity: 180,000-200,000

m3 biogas/day

Type: CHEAP WWT

Substrate: Ethanol distilleryeffluent

Characteristics: Biogas,

sulfur management, posttreatment

Activities: Full design,commissioning andoperation support

h // dbf d / b/fil d i / l d/bi k h /D /20100420 GTZ Bi P j LEIPZIG CN EN df


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htt // dbf d / b/fil d i / l d/bi k h /D t/20100420 GTZ Bi P j t LEIPZIG CN EN df


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htt // dbf d / b/fil d i / l d/bi k h /D t/20100420 GTZ Bi P j t LEIPZIG CN EN df


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Welcome to cooperate

University of Science and Technology Beijing

School of Civil and Environmental EngineeringCentre for Sustainable Environmental Sanitation

Xueyuan Road 30 / Haidian District

Tu Mu Huan Jing Lou - Office 12.14

Beijing, 100083, P.R. China

[email protected]

[email protected]

[email protected]/Fax +86-10-6233 4378
mailto:[email protected]:[email protected]


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Am Feuersee 874592 Kirchberg/Jagst - GermanyTel.: +49 7954 921 969

Fax: +49 7954 926 204

Chairman:Michael [email protected]

Vice-Chairman:

Heinz-Peter Mang

[email protected]

www.gerbio.org

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Mang Hangzhou October 2010

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