An indexing valve for a regenerative thermal oxidizer (RTO). A valve housing includes a diverter assembly further comprising: a pipe shaft, the pipe shaft disposed through the valve housing; a diverter blade subassembly connected to the pipe shaft between the pipe shaft ends for rotating within the valve housing, the rotation of which is supported by a bearing assembly at the base; the diverter blade subassembly further comprising a pair of opposing diverter plates, each of the diverter plates curved, wherein a large-volume inlet plenum is defined between the diverter plates for receiving fluid flow from one of the ports. To aid in sealing, the corner section ends within the housing extend beyond a width of each corner and are chamfered to limit wear of the seal. Fluid flow is either atmospheric pressure or negative pressure relative to said valve housing to further aid in sealing.

A regenerative thermal oxidizer assembly includes a first housing member and a second housing member. The first housing member defines a regenerative portion and a combustion chamber. The second housing member defines an inlet chamber and an outlet chamber. A regenerator is disposed within the regenerative portion of the first housing member and defines a central axial opening extending to the combustion chamber. A thermal element extends through the axial opening to the combustion chamber for providing heat to the combustion chamber for initiating combustion inside the combustion chamber. The first housing member is rotatable around an axis defined by the axial opening relative to the second housing member for rotating the regenerator relative to the inlet chamber and the outlet chamber.

An electrically controlled valve which can be operated using a programable controller. A cooperating pair of the electrically controlled valves can be used in a Regenerative Thermal Oxidizer (RTO). The electrically controlled valve has two seats, and a blade which can move between a first position contacting the first seat and a second position contacting the second seat. The blade is moved by an actuator which is controlled by a variable frequency drive (VFD). A control computer continuously monitors the operation of both valves and halts operation of the system upon detecting a fault (error). The motion of the blade is programmed such that force of impact on the seat is reduced. Once the blade is seated, a brake is engaged which maintains the stationary position while utilizing relatively low power.

The invention relates to a method and an apparatus for treating exhaust gases comprising organosilicon components or accompanying substances. The invention more specifically relates to the use of bulk regenerator materials as storage materials allowing periodic removal, purification, and redelivery to the system. The invention solves the problem of clogged regenerator-storage materials during regenerative post-combustion of exhaust gases containing organosilicon components.

In order to provide a method for the purification of a raw gas stream containing water vapour that is simple and cost-efficient to perform, it is proposed that the method should comprise the following: feeding the raw gas stream to a reforming region in which contaminants in the raw gas stream react chemically with the water vapour in the raw gas stream, as a result of which a reformed raw gas stream is obtained; feeding the reformed raw gas stream and an oxidising agent stream to an oxidation region in which constituent parts of the reformed raw gas stream react chemically with oxidising agent of the oxidising agent stream, as a result of which a clean gas stream is obtained. Moreover, optionally a closed-loop control of the oxygen content is provided. Further, it is optionally provided for the clean gas stream to be fed to a condenser, as a result of which the volumetric flow of the clean gas stream is reduced and/or as a result of which energy can be recovered and used for pre-heating the oxidising agent and for other production processes.

An indexing valve for a regenerative thermal oxidizer (RTO). A valve housing includes a diverter assembly further comprising: a pipe shaft, the pipe shaft disposed through the valve housing; a diverter blade subassembly connected to the pipe shaft between the pipe shaft ends for rotating within the valve housing, the rotation of which is supported by a bearing assembly at the base; the diverter blade subassembly further comprising a pair of opposing diverter plates, each of the diverter plates curved, wherein a large-volume inlet plenum is defined between the diverter plates for receiving fluid flow from one of the ports. To aid in sealing, the corner section ends within the housing extend beyond a width of each corner and are chamfered to limit wear of the seal. Fluid flow is either atmospheric pressure or negative pressure relative to the valve housing to further aid in sealing.

An indexing valve for a regenerative thermal oxidizer (RTO). A valve housing includes a diverter assembly further comprising: a pipe shaft, the pipe shaft disposed through the valve housing; a diverter blade subassembly connected to the pipe shaft between the pipe shaft ends for rotating within the valve housing, the rotation of which is supported by a bearing assembly at the base; the diverter blade subassembly further comprising a pair of opposing diverter plates, each of the diverter plates curved, wherein a large-volume inlet plenum is defined between the diverter plates for receiving fluid flow from one of the ports. To aid in sealing, the corner section ends within the housing extend beyond a width of each corner and are chamfered to limit wear of the seal. Fluid flow is either atmospheric pressure or negative pressure relative to the valve housing to further aid in sealing.

A regenerative post-combustion device which has, along a longitudinal axis, a combustion chamber, a heat exchanger space, which is divided into at least two heat exchanger segments each filled with heat exchanger material, a distribution space which, corresponding to the heat exchanger space, having at least two distribution segments which each communicate with a heat exchanger segment, and a distribution device having at least one exhaust gas passage opening and at least one clean gas passage opening, wherein the exhaust gas passage opening is arranged angularly offset to the clean gas passage opening such that the exhaust gas passage opening communicates with a first distribution segment and the clean gas passage opening communicates with a second distribution segment different from the first distribution segment, and the exhaust gas passage opening and the clean gas passage opening are located at different radial distances from the vertical axis of the post-combustion device. The distribution space has a shut-off device and a bypass line for at least one distribution space segment, the shut-off device being configured such that a partial volume flow can be diverted from the associated heat exchanger segment via the bypass line instead of through the exhaust gas passage opening or/and the clean gas passage opening.

A system for emission reduction may include a housing defining a housing interior, a gas inlet configured to receive gas, a first emission reduction module comprising a first catalytic heater, and internal tubing disposed in the housing interior and configured to transport and control the gas to the first catalytic heater of the first emission reduction module.