Alstom Technology Limited

General Electric Technology Gmbh

Sca Hygiene Products Ab

Arcam Ab

Volvo Technology Corporation

Volvo Personvagnar Ab

Alstom Technologies Ltd

Enklaver Ab and Ab Volvo

Volvo Lastvagnar Ab

Ab Volvo

Heed Consulting Ab

Mikael Larsson

Fredrik Jens Brogaard

Edward Jobson

Rikard Håkansson

Kerstin Margareta Forsgren

Arne Andersson

Staffan Lundgren

Shabira Abbas

Kent Malmgren

Lars Sandberg

Morgan Larsson

Lennart Cider

Björn Heed

Daniel Grunditz

Lawrence Joseph Czarnecki

Anette Larsson

Rozalia Bitis

Stefan Witte

Peter Jozsa

Fredrik Winquist

Martin Lunden

Peter Josza

Maria Hansson

Jacob Claesson

The present invention relates to a method for measuring a concentration of sulphite in a substance in a gas cleaning process, the method comprising the steps of sending a plurality of voltage pulses through the substance by a first electrode () and a second electrode (), which first and second electrodes () are in contact with the substance, receiving current responses generated by the plurality of voltage pulses, and analyzing the current responses using a multivariate data analysis for calculation of the concentration of sulphite in the substance. The present invention further relates to a sulphite sensor () for performing such a method.

Sulphite sensor and method for measuring sulphite concentration in a substance

A wet scrubber for cleaning a process gas containing sulphur dioxide comprises an absorption vessel for contacting the process gas with an absorption liquid to absorb sulphur dioxide from the process gas, a sensor for measuring a concentration in the absorption liquid, and a control unit. The control unit is adapted to receive a measurement signal from the sensor and to control, based on the measured concentration, at least one wet scrubber operating parameter influencing the concentration in the absorption liquid.

Method of controlling a wet scrubber useful for removing sulphur dioxide from a process gas

A wet scrubber () for cleaning a process gas containing sulphur dioxide comprises an absorption vessel () for contacting the process gas with an absorption liquid to absorb sulphur dioxide from the process gas, a sulphite sensor () for measuring a sulphite concentration in the absorption liquid, and a control unit (). The control unit () is adapted to receive a measurement signal from the sulphite sensor () and to control, based on the measured sulphite concentration, at least one wet scrubber operating parameter influencing the sulphite concentration in the absorption liquid.

A gas cleaning system including a wet scrubber () for removal of sulphur dioxide from a gas and an oxidation basin system () for receiving effluent generated in the removal of sulphur dioxide from the process gas. The oxidation basin system () comprises an oxidation basin () for containing the effluent during treatment thereof, an oxygen supply system () for supplying oxygen to the effluent in the oxidation basin (), and a contacting system for bringing the effluent into contact with an enzyme which catalyzes the oxidation of bisulphite and/or sulphite ions.

Method and a device for treating effluent seawater from a seawater scrubber

A superabsorbent polymer composite including superabsorbent polymers and cellulosic nanofibrils having a diameter equal to or less than 100 nm. The composite may be in the form of particles or a foam. Methods for producing the composite and absorbent articles including the superabsorbent polymer composite are also provided.

Superabsorbent polymer composite comprising a superabsorbent polymer and cellulosic nanofibrils

The present disclosure is directed to a method for monitoring a cleaning of a process gas passing through a wet scrubber. The wet scrubber comprises an inlet zone, a contact zone and an outlet zone. The contact zone is divided into at least two sections. The method comprises measuring a concentration of sulphur dioxide in at least a first measuring point corresponding to a first section of the at least two sections of the contact zone to obtain measurement information; and comparing the measurement information to a reference value to determine a local sulphur dioxide removal performance of the first section.

Method for monitoring a cleaning of a process gas

A selective catalytic reduction reactor (), which comprises at least one catalyst layer (), is operative for removing NOx from a flow of process gas of a process plant, such as a combustion plant or an incineration plant. A device for controlling the feeding of a reducing agent, such as urea or ammonia, to said at least one catalyst layer (), which has an attack area (A) facing the flow (P) of process gas, comprises at least one supply nozzle () which is operative for supplying reducing agent in at least one supply area () which corresponds to a part of the attack area (A), and a moving device () which is operative for moving said supply area () over the attack area (A).

Method and device for controlling the supply of a reducing agent to an SCR system

An internal combustion engine exhaust gas system includes an EGR arrangement adapted to lead a first flow of exhaust gas, the EGR flow, from an outlet side of the engine to an inlet side of the engine, an exhaust gas conduit adapted to lead away a second flow of exhaust gas, the exhaust flow, from the outlet side of the engine, and an energy recovering unit, such as a turbo, associated with the exhaust gas conduit. The unit is adapted to recover exhaust gas energy from the exhaust flow. The system includes a heat exchanger adapted to allow heat exchange between at least a part of the EGR flow and at least a part of the exhaust flow, the heat exchanger being associated with the exhaust gas conduit at a position downstream the energy recovering unit.

Internal combustion engine exhaust gas system

A method of protecting a NOx reducing catalystfrom fouling, where the NOx reducing catalystis downstream of a circulating fluidized bed (CFB) boilerand upstream of a particulate removal device. The method includes introducing a SOremoving reagentin a calcium to sulfur molar ratio greater than that required for SOremoval from a flue gasgenerated by a CFB, thereby preventing SOformation and fouling of the NOx reducing catalyst

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The invention relates to an arrangement for the production of a three-dimensional product, which arrangement comprises a work bench on which the said three-dimensional product is to be constructed, a powder dispenser which is arranged to apply a thin layer of powder onto the work bench to create a powder bed, an irradiation gun for transmitting energy to the powder so that melting of the powder takes place, the arrangement comprising a casing within which the pressure is reduced in relation to the atmospheric pressure and within which the work bench and the irradiation gun are located, with the powder dispenser, or a supply pipe connected to the powder dispenser, being arranged partially outside the casing.

Arrangement for the production of a three-dimensional product

Method and arrangement for treatment of a gas-flow in connection with a NOreducing catalyst () that include guiding the gas-flow through an exhaust gas treatment unit () having several ducts () with exchange of heat between the ducts (). The ducts () are connected to an inlet and an outlet, respectively, at the exhaust gas treatment unit () so that the gas-flow occurs during exchange of heat between incoming and outgoing flows. Reduction of NOcompounds in the gas-flow is accomplished by means of the NOreducing catalyst (). An adaptation of the temperature of the exhaust gas treatment unit () is affected to the prevailing operating condition of the NOreducing catalyst (). The method and apparatus enable provision of the required exhaust gas temperature for NOreduction, while also accommodating the temperature limitations imposed by sulphur absorption and regeneration subsystems.

NOx-reducing catalyst with temperature regulation of exhaust gas

A device for use with a lean-burning internal combustion engine is disclosed. The device is comprised of a means for generating an air/fuel mixture for the cylinders of the engine in order to provide at least stratified and homogenous operation, an exhaust system connected to the engine, and an NO -adsorbing catalytic converter arranged in the exhaust system. The device additionally has a heat exchanger that is fitted upstream of the catalytic converter, wherein the heat exchanger is used to adapt the temperature of the exhaust gas from the engine to an operating state of the catalytic converter.

Growing community of inventors

Mölndal, Sweden

Mikael Larsson