Measure the biogas generated during the process of garbage disposal and digestion

Use the methane generated from garbage disposal for combined heat and power plant (CHP) units

Ultrasonic flow measurement of various biogas

Installation verified by a verified organization

background

The Syndicat Mixte de Traitement et Valorisation des D é chets has granted Valor'Caux a public service concession to establish and operate the E'Caux P ô le waste treatment plant. Valor'Caux is a subsidiary of Veolia's waste recycling and regeneration division. The company is located in the city of Bramato in the Seine department of France.

E7aux P ô le has built a new set of methane and composting equipment. This device is used to convert or recycle organic waste into biogas and agricultural fertilizers. The biogas obtained from waste treatment and methane conversion facilities is used for combined heat and power (CHP):

Electricity, resold to EDF grid

●Process thermal energy:

-Provide evaporators for processing liquid waste products

-Reheat the leachate re injected into the methane conversion channel to optimize the degradation process

Measurement requirements

In this facility, it is necessary to measure the biogas production from waste treatment and biogas plants, as well as the amount of biogas used by 400 and 200 kW generators. The measurement results must reflect the utilization rate of biogas. If the utilization rate is higher than 75%, the customer can apply for a tax refund (general tax levied on polluting activities). Measuring the consumption of cogeneration generators is equally important - it involves applying for cogeneration bonuses. This is a commercial transaction and an explanation of the overall uncertainty calculation must be provided. EDF authorizes a third-party supervisory agency to verify this. For customers, flow meters must have calibration certificates and annual calibration records upon delivery.

Cologne Solution

At the output end of its biogas digester, aOPTISONIC 7300 C ultrasonic flowmeter.Temperature and pressure sensors are connected to the flow meter to calculate the standard flow rate for biogas production. When crude biogas leaves the biogas digester, it is rich in water, H2S, and particles.

1 unitOPTISONIC 7300Measure the amount of biogas from the waste treatment facility. 1 unitOPTISONIC 7300Installed behind the gas purifier (to remove particles, moisture, and H2S). Then connect the temperature and pressure sensors to the flow meter for standard condition volume calculation.

The calculation results obtained by the customer are then verified for uncertainty by a third-party regulatory agency. The customer also signed an annual verification contract to be executed by the Cologne customer service department.

Image: OPTISONIC 7300 installed on the biogas supply pipeline leading to the cogeneration generator unit

Customer benefits

Thanks to Cologne's rich experience in gas ultrasonic flow measurement technology,OPTISONIC 7300Capable of measuring complex gases such as biogas, even under conditions of saturated humidity, H2S content, and particulate matter (after methanogenesis).

The overall measurement uncertainty after temperature and pressure correction is much lower than the requirements of EDF. According to regulatory requirements, the customer service department in Cologne conducts annual checks on these measuring instruments.

Image: Measurement of Biogas Using OPTISONIC 7300 C Ultrasonic Flow Meter

Use the product

OPTISONIC 7300 ultrasonic flowmeter, suitable for applications of natural gas, process gas, and process auxiliary gas

Dual channel flowmeter, used for volumetric flow measurement under standard conditions, independent of the properties of the medium

Maintenance free, no pressure loss, wide range ratio

Flange diameter: DN50... 1000/2... 40 ', maximum pressure rating PN450/ASME Cl 2500; Can provide welded connections

3 x 4…20 mA、HART®、Modbus、FF