De Clercq & Partners

Described herein are biopolymer compositions for removing algae from recreational waters such as swimming pools and spas, kits comprising same and method to remove such undesirable algae. The biopolymer is selected for causing flocculation of algae when added to the recreational waters. Thanks to addition of the biopolymer, flocculated algae can easily be removed from the waters by being trapped in the pool or spa's filtration system. In embodiments the biopolymer comprises chitosan, preferably high molecular weight chitosan (HMWC).

The invention provides for systems, methods, and compositions for targeting nucleic acids. In particular, the invention provides non-naturally occurring or engineered DNA-targeting systems comprising a novel DNA-targeting CRISPR effector protein and at least one targeting nucleic acid component like a guide RNA. Aspects of the invention in particular relate to Cpfl mutants having altered PAM specificity.

The present disclosure relates to a heat exchange arrangement comprising one or more shell and tube heat exchangers having a shell with an inner space, the heat exchanger having a tube-side inlet which enters a tube-side fluid to be heated or cooled in a front head located in between the tube-side inlet and a front tube sheet, from which the tube-side fluid then is distributed to a plurality of tubes which are held in place by tube sheets, and through which the tube-side fluid moves and during the movement is cooled or heated by a first shell-side heating or cooling fluid which moves through a first compartment with a first compartment inlet and a first compartment outlet, and by a second shell-side heating or cooling fluid which moves through a second compartment with a second compartment inlet and a second compartment outlet, whereafter the cooled or heated tube-side fluid is collected in a rear head located between a rear tube sheet and a tube-side outlet through which the cooled process gas leaves the heat exchanger, the tubes further being supported by a first and a second intermediate tube sheet placed between the front tube sheet and the rear tube sheet and between which a buffer compartment is formed with a buffer fluid with a buffer fluid temperature, the buffer fluid not chemically reacting producing insoluble compounds that precipitate as scale and not comprising compounds that chemically react with the shell resulting in corrosion at the buffer fluid temperature, and having a pressure which is higher than the higher one of the pressure of the first shell-side fluid in the first compartment and the second shell-side fluid in the second compartment.

The present disclosure relates to a method and a system to increase the dissolved oxygen content in a water body having a dissolved oxygen content of between 0 mg/l and 4 mg/l, or to anticipate a future drop of a dissolved oxygen content of a water body to between 0 mg/l and 4 mg/l, wherein the water body is non-stratified, or is stratified and comprises at least an epilimnion, wherein the method comprises a step a, wherein a stream of diluted aqueous nitrate containing liquid droplets of which at least part are diluted oxygenated aqueous nitrate containing liquid droplets are formed, and a subsequent step b, wherein the diluted aqueous nitrate containing liquid droplets of which at least part are oxygenated diluted aqueous nitrate containing liquid droplets are further spread, in case of a non-stratified water body, in a part of the water body or in the whole water body, and in case of a stratified water body, in a part of the epilimnion of the water body or in the whole epilimnion of the water body.

The present disclosure relates to a horizontally oriented gas handling equipment of a chemical production plant, comprising a bottom with a lowest part, and being configured to receive a gas which comprises solid particles, wherein, during operation, the solid particles at least partially are carried over from the gas phase to a condensate phase, and comprising a drain arrangement located in the lowest part of the bottom of the gas handling equipment, which comprises a drain nozzle comprising an drain opening, and a drain pipe which is in liquid communication with the drain nozzle, the drain opening being configured to drain the condensate out of the gas handling equipment towards the drain pipe, and wherein a collar which at least partially surrounds the drain opening and comprises one or more collar drain openings which are located in a side of the collar opposite to the flow direction of the incoming gas in the gas handling equipment, at least part of the solid particles of the condensate being stopped by the collar, thereby obtaining a remaining part of the condensate with a reduced amount of solid particles which will flow towards the one or more collar drain openings, and subsequently in the nozzle opening and finally in the drain pipe. The present disclosure further relates to a nitric acid production plant comprising an ammonia oxidizer, an absorption tower, and horizontally oriented gas handling equipment. The present disclosure finally relates to a method for handling a gas with solid particles in a horizontally oriented gas handling equipment of a chemical production plant.

The present disclosure relates to a gas handling equipment of a chemical production plant, comprising a bottom with a lowest part, and being configured to receive a gas which comprises solid particles, wherein, during operation, the solid particles at least partially are carried over from the gas phase to a condensate phase, and comprising a drain arrangement located in the lowest part of the bottom of the gas handling equipment, which comprises a drain nozzle comprising an drain opening, and a drain pipe which is in liquid communication with the drain nozzle, the drain opening being configured to drain the condensate out of the gas handling equipment towards the drain pipe, and wherein one or more floating ball liquid traps are installed downstream the one or more drain arrangements, each floating ball trap being configured to evacuate the condensate out of one or more of the drain pipes when condensate is present in the drain pipe of the respective drain arrangement(s). The present disclosure further relates to a nitric acid production plant comprising an ammonia oxidizer, an absorption tower, and gas handling equipment. The present disclosure finally relates to a method for handling a gas in a gas handling equipment of a chemical production plant.

A burner basket assembly of an ammonia oxidation reactor, wherein the burner basket assembly comprises a burner basket inner side wall, a gas-permeable bottom plate, wherein between the burner basket inner side wall and the bottom plate a circumferential radial clearance is present, an L-shaped clearance cover profile which comprises a horizontal and a vertical clearance cover plate, wherein the horizontal and the vertical clearance cover plate are mechanically fixed to each other, wherein the vertical clearance cover plate comprises a window opening, and wherein the L-shaped cover profile during operation is displaceable in a vertical direction in view of the burner basket inner side wall, and at least one key-lock system which comprises a lock which is connected to the burner basket inner side wall, which extends through the window opening in the vertical clearance cover plate, and which comprises at least one lock opening, and a key which has at least a vertical pin with a certain pin length, wherein the lock opening is configured to allow insertion of the pin in the lock opening, and at the same time is configured to limit movement of the pin in view of the lock opening to such an extent that radial movement of the vertical clearance plate in view of the burner basket inner side wall is restricted.

A lamination device includes a rack, a positive electrode sheet die-cutting apparatus, a negative electrode sheet die-cutting apparatus, a lamination apparatus, a separator unreeling apparatus and a separator pulling apparatus. The positive electrode sheet die-cutting apparatus includes a positive electrode sheet unreeling mechanism, a positive electrode sheet V-notch punching mechanism, a positive electrode sheet cutting mechanism, a positive electrode sheet detection mechanism and a positive electrode sheet conveyor line. The negative electrode sheet die-cutting apparatus includes a negative electrode sheet unreeling mechanism, a negative electrode sheet V-notch punching mechanism, a negative electrode sheet cutting mechanism, a negative electrode sheet detection mechanism and a negative electrode sheet conveyor line. The lamination apparatus includes a lamination table. The lamination device further includes a positive electrode sheet pre-positioning apparatus, a negative electrode sheet pre-positioning apparatus, a conveying apparatus, a battery cell splitting apparatus and a discharging manipulator.

The invention relates to a method for producing a textile material from a mycelium. The method comprises growing a filamentous fungus in submerged culture in a medium containing a fermentable carbon-rich feedstock to generate a mycelium biomass, recovering the mycelium biomass from the medium, mixing the mycelium biomass and a fiber to form a mycelium pulp, wherein a wet strength agent is mixed with the mycelium biomass and the fiber to form the mycelium pulp or wherein a wet strength agent is added to the mycelium pulp, dewatering and drying the mycelium pulp to form a mycelium sheet and impregnating the mycelium sheet with an oil to form the textile material,. The invention further provides a textile and/or leather-like material obtainable by the method of the invention, as well as uses thereof.

The present disclosure provides a pressure control valve (1), in particular for use in a urea-producing plant. The present disclosure also provides a urea-producing plant comprising one or more pressure control valves (1), and the use of a pressure control valve (1) in a urea-producing plant. The pressure control valve (1) comprises a first body part (2) and a second body part (3) fluidically connected to each other through a valve seat (8), wherein the first body part (2) comprises an inlet (4) and a flow-regulating component, the movement of which regulates the volume flow rate of fluid flowing from the first body part (2) to the second body part (3); the second body part (3) comprises an outlet (5); the first body part (2) and the second body part (3) are made from the same first material; wherein the valve seat (8) has a cylindrical shape and circular walls and comprises an inner region (10) and an outer region (9), and wherein the outer region (9) is made from a second material, the inner region (10) is made from a third material, and the second material has a lower hardness than the third material.