Top Banner

Click here to load reader

Lng Pdd Whru

Mar 07, 2015




DESIGN DOCUMENT FORM (CDM PDD) - Version 03 CDM Executive Boardpage 1

\CLEAN DEVELOPMENT MECHANISM PROJECT DESIGN DOCUMENT FORM (CDM-PDD) Version 03 - in effect as of: 28 July 2006 CONTENTS A. B. C. D. E. General description of project activity Application of a baseline and monitoring methodology Duration of the project activity / crediting period Environmental impacts Stakeholders comments Annexes Annex 1: Contact information on participants in the project activity Annex 2: Information regarding public funding Annex 3: Baseline information Annex 4: Monitoring plan

DESIGN DOCUMENT FORM (CDM PDD) - Version 03 CDM Executive Boardpage 2

SECTION A. General description of project activity A.1. Title of the project activity: Title of project activity: Waste Heat Recovery projects for gas turbine generators CDM document version No: 1 Date of the CDM document: 4/11/2009 A.2. Description of the project activity: The project of waste heat recovery for GTG aims to reduce the GHG generated from the fuel gas burning in the hot oil heaters by partially stopping oil heaters (heat generators) operations and utilize the heat generated from the flue gases of GTGs to heat the hot oil instead, in order to obtain the heat duties required by heat consumers (Refer to the project boundaries for the list of heat consumers). The heating duty for the ELNG facilities is generated by hot oil heaters (heat generators). The required heat is obtained by burning of fuel gas in the hot oil heaters. The base line scenario is the same as the scenario existing prior to the start of implementation of the project activity (refer to selection of base line scenario). Main environmental benefits The main environmental benefit from the project activity arises from the replacement / Displacement of an amount of heat energy generated by operation of the existing 4 oil heaters. The project activity displaces energy from fossil fuels based heat generation of the company and hence reduces CO2 emission. The heaters capacity is 154.96 GJ/hr while the new heat capacity of the WHR is 120 GJ/hr. The source of heat of the Project activity comes from the temperature of flue gases emitted from GTG, in the absence of the project activity; the heat accompanied with the flue gases would release to atmosphere. Thus, save environment from thermal pollution. It is worth mentioning that the difference in heat duties between the existing system and the proposed WHR shall be compensated by the one or two oil heater (s) partial operation (for short time of the year) to meet the remaining heat duty requirements of the LNG facilities. The total CO2 emission reduction for the entire crediting period of 10 years has been calculated as 295, 50 tonne CO2equivalent.

DESIGN DOCUMENT FORM (CDM PDD) - Version 03 CDM Executive Boardpage 3

Another benefit other than being reduction of CO2 emissions are Sustainable development through better energy efficiency and improvement of local environment. The project activity will lead to sustainable development and promote sustainable Industrial growth by conserving natural resources and preventing the thermal impact even though no such statutory requirement exists in Egypt. The project is the first submitted project of the Oil/Gas sector in Egypt which will encourage other Oil/Gas companies to understand and apply CDM. Social benefit The proposed project will have indirect positive impact on society, as it is help to conserves the future generations right of utilizing the natural resources by optimizing the usage of natural resources. The project activity increases the indirect employment due to the project activities for skilled manpower and Professionals. In the same time the implementation of the CDM project activities by ELNG internal resources as part of a capacity building project within ELNG to generate more projects that are environmental friendly and promote a sustainable development culture inside the company. The project is a step towards improve energy efficiency and achieve near-zero waste initiatives in Egyptian LNG facilities. Economical Benefits The proposed project aims to install 4 waste heat recovery units for ELNG gas turbine generators which facilitate to stop some of the plant oil heaters; this will reduce fuel consumption which maximizes the quantity of gas liquefied /year and reduce the time required to liquefy the contracted amount of gas along the project life time. A.3. Project participants: Name of Party involved (host) indicates a Host Party) Egypt Ministry of State for Environmental Affaires A.4. Private and/or public entity(ies) Project participants (as applicable) Kindly indicate if the Party involved wishes to be considered as project participant (Yes/No) No

Egyptian LNG Private entity

Technical description of the project activity:

DESIGN DOCUMENT FORM (CDM PDD) - Version 03 CDM Executive Boardpage 4

A.4.1. Location of the project activity: A.4.1.1. >> EGYPT A.4.1.2. Region/State/Province etc.: >>El Beheria Govenerrnate, A.4.1.3. City/Town/Community etc.: >> IDKU A.4.1.4. Details of physical location, including information allowing the unique identification of this project activity (maximum one page): >>>>The Egyptian LNG (ELNG) is a tolling facility that is liquefy natural gas and located 3120'52"N & 3019'14"E, 3 km from the town of Idku and 40 km east of Alexandria on the Egyptian Mediterranean Coast and on the east side of Abu Qir bay. The topography for the general area is flat with little relief except for isolated dunes along the coastline. The proposed project will be located inside Egyptian LNG facility. Host Party(ies):

Map (1): Geographical location of the project A.4.2. Category(ies) of project activity: Sectoral Scope Category 4 (Manufacturing industries)The project activity may be principally categorized in category 4 Energy Industries (Manufacturing

industries) as per Scope of Projects activities enlisted in the list of sectoral scopes and approved base line andmonitoring methodologies on the website of UNFCCC for accreditation of Designated operational Entities.

A.4.3. Technology to be employed by the project activity: >> Technology to be employed

DESIGN DOCUMENT FORM (CDM PDD) - Version 03 CDM Executive Boardpage 5

Natural gas liquefaction process is carried out in 2 parallel identical production trains. Once liquefied, LNG takes up about one six-hundredth of the space it occupied in its gaseous form, making it easier to store and transport over long distances. The LNG is stored at slightly above atmospheric pressure in double wall cryogenic LNG tanks and is exported as a liquid through LNG tankers. ELNG electric power generation system consists of four gas turbine generators (GTGs). Each GTG is rated at 14.5 MW the flue gases flow from GTG is around 63 kg/s with temperature around 356 C. The operating philosophy of GTG in the Egyptian LNG plant is to operate three out of four GTGs to provide the required electricity , the forth GTG is on standby as backup in case of one GTG fails. The ELNG facilities were originally designed to operate with 4 oil heaters. The project aims to reduce the GHG generated from the fuel gas burning of the 4 oil heaters existing in the LNG. Hot oil system is a closed loop circulation system designed to supply the process heating duties for the LNG plant hot oil consumers (heat consumers). Refer to the project boundaries for the list of consumers. Heat consumers are equipments required to have certain temperature in order to maintain its functions inside the LNG liquefaction factory. The heat energy requirement of the consumers in the project boundary is (185.902 GJ/hr) for mode is divided as follow: a. Feed Gas Heater (E-1106 ) is equal to 35 GJ/hr ( mode 1 only) a. Solvent Reclaimer (E-1205) is equal to 0.921 GJ/hr b. Regeneration Reboiler (E-1204) is equal to 36.8 GJ/hr c. NGL Recovery Column Reboiler (E-1702) is equal to 17.69 GJ/hr d. Make up Fuel Gas Heater (E-2201) is equal to 3.06 GJ/hr Egyptian LNG consist of 2 identical liquefaction production unit, each production unit has a hot oil System contains two parallel hot oil heaters, each heater is designed to provide 50 % of the production train duty, thus the number of oil heaters in the ELNG facility is 4 heaters. The fuel gas is supplied to the heaters from low pressure fuel gas system. Hot oil ((Mobiletherm 605 thermal transfer fluid) is heated in the hot oil heaters from an inlet temperature 150C to outlet temperature 246C. outlet hot oil temperature is directly proportional to the fuel gas supply. Cold Hot oil from consumers is returned back to the hot oil surge drum where the cycle starts again.

DESIGN DOCUMENT FORM (CDM PDD) - Version 03 CDM Executive Boardpage 6

The waste heat recovery (WHRU) unit is designed to utilize heat from the exhaust flue gases of gas turbine generators (GTGs) (refer to A.2. for more details about GTGs) and further used to heat the hot oil. The Waste heat recovery units will be retrofitted directly to the exhaust system of the four GTGs to heat the hot oil up to the intended temperature 247C to achieve the following goals: Save the energy lost with GTGs exhaust gases. Decrease the Green House Gases (GHG) emissions. Solve problem of the lack of hot oil duty in winter time. Increase plant Thermal Efficiency by saving the hot oil heaters fuel gas.

The Determination of the operation philosophy of the WHRU and oil heaters depends on two factors as follow: 1. Operation post 2012 where the feed gas temperature increased due to the implementation of new compression station in the upstream plant which will lead to increase the temperature of the feed gas above the current temperature thus the required heat duty of the plant will be much lower. 2. Operation in winter time (4 months of the year) and summ

Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.