Biogas Odorization

A low biogas flow rate, a minimum metering volume, a low pump frequency and large time gaps between the pump strokes. These are challenges which LEWA has faced with the KMM Bio flow meter in order to be able to realize an optimal odorization of biogas.

Solutions

KMM Bio flowmeter: How to measure the smallest quantities

With the odorization of biogas, LEWA faced the challenge of dosing the smallest quantities. Small in this context means 0.003 l/h of odorant (150 Nm³ gas times 0.02 ml/Nm³ concentration odorant in the gas = 3 ml/h flow rate). The KMM Bio flow meter developed by LEWA solves this task. This makes it possible to measure low odor flow rates. In combination with the LEWA control unit (OCU), changes to the dosing volume can also be detected at any time and compensated in a closed loop. The solenoid operated flowmeter can be calibrated and repaired on site.

The biogas odorizing systems from LEWA also ensure a correct metering even with gas flow range of 150 Nm³/h with a gas pressure of up to 20 bar. They odorize the biogas with THT which is commonly used in Germany. It is a volatile, typically smelling organic sulfur compound.

Further advantages of the LEWA odorizing systems for biogas:

  • Precise measurement of the smallest quantities and evaluation of the actual value concentration
  • Changes in dosing capacity are detected and, if necessary, automatically controlled by the controller
  • Thanks to the closed loop, the concentration is always at the desired value
  • Pump with stainless steel diaphragm is hermetically sealed: No smell from odorant and no leaks

Background

Biogas – how is it produced and used?

In the production of biogas both liquid biomass and manure can be used. Collected in the pit, the substances are led into the fermenter. In the light and oxygen protected tank, anaerobic microorganisms digest the substrates. In this process, methane and carbon dioxide are released–the biogas. Later, it can be used for electricity, heat and fuel, or fed into a natural gas network.

Industries

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LEWA has been your expert in pumps and packages since the 1950s. With us, you get everything from a single source: Our custom-built packages are used all around the world for offshore crude oil and natural gas production. From China to the United Arab Emirates, strong partners rely on our expertise for crude oil exploration applications.

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Gas Odorization with LEWA Pumps and Metering Packages

Natural gas, oxygen, and nitrogen are odorless but potentially dangerous. This is why these gases are "odorized" with as strong a smelling substance as possible. For more than 40 years, LEWA has been developing systems for the odorization of gases such as natural gases, biogases, and liquefied gases. This process is enormously important, so the odorizing system has to operate precisely and reliably.

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Pumps and Metering Systems for Distillation Plants and Applications in Refineries

Crude oil must be cleaned, separated, and converted (refined) until the final products suitable for sale are made (e.g., gas, diesel, heating oil, lubricants, propane, butane). LEWA supports you with pumps and metering systems, which are used in the refining process during chemical metering. Application with our products are distillation plants, coker, cracker, or visbreaker, for example. Ask our experts for more information!

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Pumps and Metering Packages for the Petrochemical Industry

We have supplied durable pumps and metering systems for applications such as the hydrocracking process for over 50 years. Petrochemicals generate starting products for the manufacture of plastics, pharmaceuticals, colorants, detergents, and other products. Contact our experts and allow us to provide you with detailed information about metering and pumping solutions for the hydrocracking process!

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Pumps and Metering Systems for Other Industries

LEWA offers customized solutions and references for almost all industries in which processes require exact metering or the reliable conveyance of fluids. As specialists in fluid handling, we of course also have experience in areas outside of our key markets.

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Products

LEWA ecoflow® diaphragm metering pump

LEWA ecoflow is the innovative and universal metering pump with DPS diaphragm protection system in a tried-and-tested modular system. Suitable for numerous applications, the ecoflow is our real all-around talent, relied on by customers from all industries.

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LEWA Odorizing Systems

LEWA has been building odorizing systems for gases such as natural gas, oxygen, nitrogen, and carbon dioxide for more than 40 years. LEWA odorizing systems meter the odorant in question reliably, proportionally, and economically.

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