Process Optimization

nanoplus lasers permit real time process control e. g. in power plants, chemical factories, metallurgical facturies etc. This is achieved by monitoring quantitatively one or more gas components formed by a reaction in the process or added to the process.

For the production of PVC for example HCl is monitored. In steel production O2, CO, CO2 are detected. Using feedback loops process parameters like temperature, pressure, gas flux optimum conditions can be realized and maintained. This permits to optimize e. g. power generation efficiency or chemical / metallurgical product quality, minimize ressource spending etc.

Selected applications of nanoplus sensing lasers for process optimization include:

Quality control of ethylene production in petro-chemical industry: C2H2
Acetylene is a by-product in the cracking process of ethylene production. The petrochemical industry minimizes the compound via hydrogenation. This process enhances the purity and quality of the manufactured ethylene. [2, 7]

Combustion control in integrated gasification fuel cell cycles: CH4
Methane content of syngas is controlled to improve combustion efficiency of integrated gasification fuel cell cycles. [35]

Combustion control in high temperature processes: CO
CO is a major element in high temperature processes. Optimizing CO concentration in flue gas increases combustion efficiency. Simultaneously, it reduces greenhouse gas emissions. CO detection at long wavelengths like 2.8 µm and 4.3 µm uses stronger vibrational absorption features than the shorter wavelength ranges. This effect increases the sensitivity of the detector and allows using measurement set ups with short path lengths. [3, 12, 35, 48, 111, 125]

Combustion control in high temperature processes: CO2 and CH4
Continuous monitoring of contents like CO2 or CH4 concentrations is essential for the efficiency of high-temperature processes in e. g. incinerators, furnaces or petrochemical refineries. Managing the CO2 content in combustion processes simultaneously reduces greenhouse gas emissions. This is also relevant for energy generating industries like coal burning power plants. [12, 35, 40, 45, 62, 94, 96, 112, 113, 116, 122, 125]

Combustion control in high temperature processes: H2O
Water vapour is often examined in combustion and propulsion processes as it is a primary product of hydrogen and hydrocarbon fuels. [15, 16, 17, 28, 65, 70, 121, 122]

Combustion control in high temperature processes: O2 and CO
Oxygen control enhances process and cost efficiency of incinerators. Oxidation requires excess air. But too much air cools down the combustion and increases the amount of CO in the flue gas. Real-time and in situ monitoring helps to optimize the oxygen content in combustion processes. [3]

Emission control: NOx
NH3 is added in combustion processes to reduce emissions of the flue gas NOx. The two compounds will react to uncritical N2 and H2O. To avoid any corrosive or environmental effects from overuse, the gas volume needs to be continuously monitored. [3, 72, 117, 118]

Power maximization of hypersonic aircraft engines: O2
The maximum power, fuel efficiency and stability of hypersonic aircraft engines depend on the captured air volume. Monitoring the oxygen concentration and velocity are important measures to define the airflow.

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