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.

The present device is a fluid bed regenerative thermal oxidizer configured to minimize dead spaces within it and eliminate the need for complex valve systems, which are typically required to move treated and untreated air across fixed beds. The present device can be a fluid bed regenerative thermal oxidizer comprising a vertical stack having a combustion chamber near its interior center and desorber shelves located within the vertical stack above the combustion chamber and adsorber shelves located within the vertical stack below the combustion shelves. Ceramic spheres can be used as heat sinks that flow from the desorber shelves, around the combustion chamber and onto the adsorber shelves and then back to the desorber shelves. In this way heat from the combustion can be captured by the heat exchange material on the desorber shelves and released to preheat untreated air on the adsorber shelves.

An apparatus for thermal exhaust gas purification includes at least one thermal reactor to which a raw gas to be purified is supplied and in which the supplied raw gas is thermally purified, and an energy recovery apparatus to which a gas purified in the thermal reactor is supplied via at least one outlet line. For improving the balance of energy, it is proposed that the energy recovery apparatus includes at least one condensation heat exchanger in which the purified gas is cooled down such that condensable substances contained in the purified gas condense, and enthalpies released thereby are transmitted to a heat exchange medium and/or the raw gas upstream of the thermal reactor.

A self-regenerative combustion system comprising a single burner, capable of operating both during the combustion step and the waste gas aspiration step, and a valve with four ways and three positions, capable of switching the regeneration and the on/off control (oxydizing agent end and waste gas end). The system is provided for obtaining the maximum efficiency, flexibility, minimum fuel consumption and minimum environmental impact with reduced NOx emissions.

The present device is a fluid bed regenerative thermal oxidizer configured to minimize dead spaces within it and eliminate the need for complex valve systems, which are typically required to move treated and untreated air across fixed beds. The present device can be a fluid bed regenerative thermal oxidizer comprising a vertical stack having a combustion chamber near its interior center and desorber shelves located within the vertical stack above the combustion chamber and adsorber shelves located within the vertical stack below the combustion shelves. Ceramic spheres can be used as heat sinks that flow from the desorber shelves, around the combustion chamber and onto the adsorber shelves and then back to the desorber shelves. In this way heat from the combustion can be captured by the heat exchange material on the desorber shelves and released to preheat untreated air on the adsorber shelves.

Disclosed is a heat storage type waste gas purification apparatus which comprises: a combustion chamber configured to combust and decompose a component contained in waste gas; a plurality of heat storage chambers each having one end communicating with the combustion chamber and each comprising a heat storage body; a plurality of supply inlets each equipped with an on-off valve and each provided at the other end of a respective one of the heat storage chambers to selectively supply waste gas thereto; a plurality of discharge outlets each equipped with an on-off valve and each provided at the other end of a respective one of the heat storage chambers to selectively discharge treated waste gas therefrom; a discharge passage connected to the discharge outlets to discharge the treated waste gas to an outside of the apparatus therethrough; a plurality of bypass passages each connecting between the combustion chamber and the discharge passage, wherein each of the bypass passages is connected to the combustion chamber at a position directly above a respective one of the heat storage chambers, and equipped with an on-off valve; and a control section operable, when a temperature of one of the heat storage chambers becomes equal to or greater than a given value, to open one or more of the on-off valves of the bypass passages so as to discharge a part of waste gas in the combustion chamber via the opened one or more bypass passages.

The present device is a fluid bed regenerative thermal oxidizer configured to minimize dead spaces within it and eliminate the need for complex valve systems, which are typically required to move treated and untreated air across fixed beds. The present device can be a fluid bed regenerative thermal oxidizer comprising a vertical stack having a combustion chamber near its interior center and desorber shelves located within the vertical stack above the combustion chamber and adsorber shelves located within the vertical stack below the combustion shelves. Ceramic spheres can be used as heat sinks that flow from the desorber shelves, around the combustion chamber and onto the adsorber shelves and then back to the desorber shelves. In this way heat from the combustion can be captured by the heat exchange material on the desorber shelves and released to preheat untreated air on the adsorber shelves.

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.

The present disclosure relates to a method for treating exhaust gas including a plasma reaction operation of reacting exhaust gas containing a volatile organic compound (VOC) with low-temperature plasma to generate exhaust gas containing a VOC-derived intermediate, and a combustion operation of combusting the exhaust gas containing the VOC-derived intermediate to produce carbon dioxide and water.

The present device is a fluid bed regenerative thermal oxidizer configured to minimize dead spaces within it and eliminate the need for complex valve systems, which are typically required to move treated and untreated air across fixed beds. The present device can be a fluid bed regenerative thermal oxidizer comprising a vertical stack having a combustion chamber near its interior center and desorber shelves located within the vertical stack above the combustion chamber and adsorber shelves located within the vertical stack below the combustion shelves. Ceramic spheres can be used as heat sinks that flow from the desorber shelves, around the combustion chamber and onto the adsorber shelves and then back to the desorber shelves. In this way heat from the combustion can be captured by the heat exchange material on the desorber shelves and released to preheat untreated air on the adsorber shelves.