Abstract: A slide valve for chemical and/or petrochemical plants, in particular of the round, oval or flat slide valve type, having a locking device (11) which is movable by a slide rod (12) into an open and closed position, and a drive which has an electric motor (13) for adjusting the slide rod (12), the locking device (11) having two lock plates (14, 15), between which a wedge arrangement (16) for pressing the lock plates (14, 15) against body seal seats (17) of the slide valve is arranged and connected to the slide rod (12), wherein the drive has a spindle drive (18) which is aligned with the slide rod (12) and connected thereto for transmitting an actuating force.

Abstract: This disclosure relates to a shut-off valve, in particular a pipe-bridge slide valve, for a coking drum for the production of coke, having at least one pipe socket which has a first end for connection to the coking drum and a second end on which a slider is arranged for opening and closing the coking drum, wherein the pipe socket has a supply connection for filling the coking drum with a medium and a diaphragm which is arranged between the supply connection and the first end of the pipe socket and can be moved into a filling position and into an emptying position, wherein, in the filling position, a diaphragm opening is arranged in the region of the central longitudinal axis of the pipe socket for introducing the medium centrally into the coking drum, and, in the emptying position, the diaphragm opening has a larger passage area than in the filling position.

Abstract: Provided is a gate valve for industrial plants, in particular for chemical and petrochemical plants. This gate valve comprises a slide rod, which is movable in the axial direction, at least one slide plate for closing the gate valve and at least one pressing member. The pressing member is connected to the slide rod and presses the slide plate against a sealing seat. Furthermore, the gate valve comprises a spring element for acting on the pressing member with a release force and a fixing element which is arranged on the slide rod for transmitting power between slide rod and spring element. The gate valve according to the invention comprises a fixing disc as a fixing element, which surrounds the slide rod and is positively connected to the slide rod.

Abstract: A double-plate gate valve 10 is proposed which is provided for fittings of industrial plants, in particular chemical and petrochemical plants, wherein the double-plate gate valve 10 comprises a housing 11 having two shut-off plates 20a, 20b inside the housing 11 which are displaceable between an open and a closed position, wherein spring elements 25 such as disc spring packs are arranged between the shut-off plates 20a, 20b pressing the shut-off plates 20a, 20b in the closed position against sealing surfaces arranged on the housing 11 such that the entire sealing force required for sealing is provided by the spring elements 25. Furthermore are proposed a shut-off plate 20 for use in an inventive double-plate gate valve 10 as well as a method for sealing the inventive double-plate gate valve using the inventive shut-off plates.

Abstract: The invention relates to a shut-off device for valve systems of industrial plants, in particular of chemical and petrochemical plants, with a disc (12) to shut off an opening for a fluid flow and with a seal seat (13a). The invention is characterised in that the disc (12) is arranged between the seal seat and a pressing means (26) to subject the disc (12) to a pressing force and can be pressed by the pressing means (26) against the seal seat (13a), wherein the pressing means (26) has in a housing (10) a plurality of pistons (48) and a transmission element for transmitting the pressing force to the disc (12), the transmission element being arranged between the pistons (48) and the disc (12) and extending along the disc circumference, and wherein the pistons (48) are fluidically connected by a feed line (49) for hydraulic fluid.

Abstract: A conduit slider for chemical and petrochemical systems, comprising a slider housing (10) which has a blockable conduit (20) and at least one slider plate (30) which can be moved into an open position and a closed position and vice versa. A sealing seat (40) is paired with the conduit (20), said sealing seat extending along the circumference of the conduit (20) and sealing against the slider plate (30) at least in the closed position during operation. The conduit slider ensures the seal between the sealing seat (40) and the slider plate (30) and allows the slider plate (30) to be installed into and removed from the slider housing (10) with a compact, portable, simple, and inexpensive design. This is achieved in that at least one circumferential groove (42) is formed in the sealing seat (40), a molded metal ring (50) with a media filling being arranged in said groove.

Abstract: A double-plate gate valve is provided for fittings of industrial plants wherein the double-plate gate valve comprises a housing having two shut-off plates inside the housing the shut-off plates being displaceable between an open and a closed position. Spring elements, such as disc spring packs, are arranged between the shut-off plates pressing the shut-off plates in the closed position against sealing surfaces arranged on the housing such that the entire sealing force required for sealing is provided by the spring elements. Also provided in stand-alone form is a shut-off plate for use in the double-plate gate valve. A method for sealing the double-plate gate valve using the shut-off plates is also provided.

Abstract: A triple sealing seat is provided in a conduit gate valve having at least one shut-off plate which is displaceable between an open and closed position with respect to the conduit. The triple sealing seat forms a substantially annular sealing surface. In order to increase the tightness, the annular sealing surface comprises a radial interior sealing and scraping edge which can be contacted with the shut-off plate during operation. Also provided is a first circumferential groove located radially further outside which is in communication with a first gas channel and to which a sealing gas pressure can be applied. Also provided is a second circumferential groove located radially further outside which is in communication with a second gas channel and to which a sealing gas pressure can be applied.

Abstract: A method of solving a control problem in a processing plant is provided by modification of at least two manipulated variables within the manipulation range thereof, wherein the manipulated variables are associated with one or more processing unit(s), and the at least two manipulated variables affect at least one process variable of the processing plant. The method includes the following steps: establishing a value distribution of the at least one process variable for different value combinations of the at least two manipulated variables within the manipulation range thereof, taking into account one or more process parameter(s), and determining a control curve on the basis of the value distribution of the process variable for modifying the at least two manipulated variables in order to switch the processing plant from the start state to the end state, taking into account at least one boundary condition.

Abstract: A coking drum is provided, especially for petroleum coke production, which has an approximately cylindrical basic body and also at least one inlet opening and outlet opening, a shut-off valve (1, 1?) being arranged at the outlet opening and/or inlet opening. The coking drum is characterized in that there is provided, at approximately the same height as the shut-off valve (1, 1?), at least one input opening (19, 19?) for feeding residual materials, especially from a vacuum distillation process upstream of the coking, into the coking drum.

Abstract: The invention relates to a drive means for a slide valve having two parallel spindles (10) which are driven in rotation by at least one motor (11), travelling nuts (12) which engage the spindles (10) and are movable in the longitudinal direction of the spindles by rotation of the spindles (10), and a cross-yoke (13) which is arranged transversely with respect to the spindles (10) and is connected to the travelling nuts (12) on the one hand and to a rod (14) on the other hand, which rod is arranged in parallel between the spindles (10) and is connected or connectible to a slide plate, the rod (14) being axially movable by the motor (11) for the actuation of the slide plate. It is distinguished by the fact that the travelling nuts (12) and the rod (14) are each articulatedly connected to the cross-yoke (13).

Abstract: The invention relates to a coking drum, especially for petroleum coke production, which has an approximately cylindrical basic body and also at least one inlet opening and outlet opening, a shut-off valve (1, 1?) being arranged at the outlet opening and/or inlet opening. The coking drum is characterized in that there is provided, at approximately the same height as the shut-off valve (1, 1?), at least one input opening (19, 19?) for feeding residual materials, especially from a vacuum distillation process upstream of the coking, into the coking drum.

Abstract: A double-disc gate valve is provided, the shut-off or valve discs of which are displaceable from an open position into a closed position and vice versa by means of an actuator rod, there being associated with the actuator rod a locking device by means of which the valve discs, together with the actuator rod, are fixable in the closed position. The locking device is movable in the longitudinal direction of the actuator rod relative thereto from an unlocking position into a locking position and vice versa, the locking position being variable in dependence upon the closed position of the valve with predetermined maximum pressing force of the valve discs against the associated valve housing sealing seats.

Abstract: The invention relates to a drive means for a slide valve having two parallel spindles (10) which are driven in rotation by at least one motor (11), travelling nuts (12) which engage the spindles (10) and are movable in the longitudinal direction of the spindles by rotation of the spindles (10), and a cross-yoke (13) which is arranged transversely with respect to the spindles (10) and is connected to the travelling nuts (12) on the one hand and to a rod (14) on the other hand, which rod is arranged in parallel between the spindles (10) and is connected or connectible to a slide plate, the rod (14) being axially movable by the motor (11) for the actuation of the slide plate. It is distinguished by the fact that the travelling nuts (12) and the rod (14) are each articulatedly connected to the cross-yoke (13).

Abstract: The invention relates to a slide valve, especially for controlling a flow of catalyst or like high-temperature media, having a pipe portion (10) and, arranged therein, a restrictor (11) which has an inlet opening and an outlet opening (12a, 12b) through which flow takes place during operation, and having a slide plate (13) which co-operates with the outlet opening (12b) to control the flow of catalyst and which is movable into an open position and a closed position I, II, the slide plate (13) being mounted so as to be displaceable by means of guide elements (14, 15) arranged on the pipe and on the plate, which guide elements are in engagement with one another. The invention is distinguished by the fact that the pipe-associated guide elements (14) are arranged before the outlet opening (12b) in the direction of flow.

Abstract: An apparatus is provided for closing or opening an opening, especially a bottom opening of a material hopper arranged above the mouth of a blast furnace having a drivable flap plate, which is movable into an open position leaving the opening clear and into a closed position blocking off the opening and vice-versa. The flap plate carries out, in the region of the opening, a linear movement substantially perpendicular to the plane of the opening and, distal to the opening, a pivoting movement.

Abstract: Coking drum 3, 4, especially for the manufacture of petroleum coke, which has an approximately cylindrical basic body, at least one inlet and at least two outlets, wherein there is arranged as shut-off member (11) at least at one outlet and/or at the or one inlet, a bridging pipe slide valve having two shut-off plates 27, 28.

Abstract: A double-disk slide valve, the shut-off plates of which are displaceable by means of an actuator rod and which is provided with a bridging pipe having two sealing rings that are in operative engagement with corresponding housing sealing seats of the slide valve housing when the slide valve is in the open position. At least one of the two housing sealing seats rests, by the action of a resilient element, under predetermined pressure against the sealing ring(s) associated with the bridging pipe when the slide valve is in the open position and against the peripheral edge of the shut-off plate(s) when the slide valve is in the closed position.

Abstract: A double-disk slide valve (10), the shut-off plates (16, 17) of which are displaceable by means of an actuator rod (21) and which is provided with a bridging pipe (22) having two sealing rings (23, 24) that are in operative engagement with corresponding housing sealing seats (14, 15) of the slide valve housing (11) when the slide valve is in the open position. At least one of the two housing sealing seats (14, 15) rests, by the action of a resilient element (25), under predetermined pressure against the sealing ring(s) (23, 24) associated with the bridging pipe (22) when the slide valve is in the open position and against the peripheral edge of the shut-off plate(s) (16, 17) when the slide valve is in the closed position.

Abstract: A device for closing or opening an opening, in particular a filling or bottom opening (11) of a material bunker (12) arranged above the furnace throat of a blast furnace, including a tilting disk (10) connectable to a drive. The tilting disk (10) is articulated to two swivel arms (15, 16) pivotably mounted about two swivel axes (13, 14) extending parallel to each other, and to be more precise, in such a manner that the edge areas of the tilting disk (10) situated on a perpendicular to the swivel axes (13, 14) of the two swivel arms (15, 16), upon a movement of these arms, move from the closed into the opened position, and vice versa, along oppositely directed arc paths (23, 24).