The present invention provides a process for continuous treatment of high-concentration organic wastewater and a device for continuous treatment of high-concentration organic wastewater. The process of the present application is that: high-concentration organic wastewater is continuously separated through the synergistic interaction of a multilayer evaporator and a heat pump, and the generated wastewater steam containing light components is continuously subjected to desulfurization and catalytic combustion after being mixed with air in a gaseous form, the treated wastewater can meet discharge standards, and heavy components of the generated wastewater can be recycled. After the desulfurizing agent in a first desulfurizer and the catalyst in a first catalytic combustor are deactivated, the generated wastewater steam containing the light components can be switched to a second desulfurizer and a second catalytic combustor for reaction, and air can be introduced into the deactivated catalyst and desulfurizing agent for in-situ regeneration at a high temperature.

The present invention shows an exhaust gas aftertreatment system comprising at least a first route and a second route arranged in parallel in an exhaust gas stream, wherein the first route and the second route are provided with exhaust gas aftertreatment subsystems. The exhaust gas aftertreatment subsystems of the first route and the second route use different exhaust gas aftertreatment technologies.

A tray including a plate-shaped portion for arranging a plurality of prismatic honeycomb structures having an outer peripheral side surface and partition walls provided on an inner peripheral side of the outer peripheral side surface, the partition walls partitioning a plurality of cells forming flow paths from a first end surface to a second end surface, the plate-shaped portion including: a plurality of corrugated plate-shaped placing portions for placing the prismatic honeycomb structures with the outer peripheral side surface in contact with the placing portions; flat plate-shaped non-placing portions adjacent to each of the corrugated plate-shaped placing portions; and partition walls erected between adjacent corrugated plate-shaped placing portions to prevent the outer peripheral side surfaces of adjacent prismatic honeycomb structures from contacting each other.

A flue gas denitration system includes a catalytic reactor accommodating a plurality of catalytic modules, into which a flue gas flows, and a flue gas heater provided on an upstream side of the catalytic reactor in a flow direction of the flue gas. In the flue gas denitration system, switched are a first denitration state in which the flue gas is denitrated by using the plurality of catalytic modules in the catalytic reactor and a second denitration state in which the flue gas is denitrated by using a catalytic module(s) less than those used in the first denitration state while a temperature of the flue gas flowing into the catalytic reactor is made higher than that in the first denitration state by using the flue gas heater. Thus, by making the temperature of the flue gas flowing into the catalytic reactor higher, it is possible to suppress deterioration in denitration performance in the case of using part of the plurality of catalytic modules for denitration.

An aftertreatment module is disclosed. The aftertreatment module may include a housing. The aftertreatment module may include a mounting plate within the housing that forms an inlet chamber and an outlet chamber. The aftertreatment module may include an inlet for exhaust gas from a combustion engine to flow into to the inlet chamber. The aftertreatment module may include an outlet through a top plate of the housing. The inlet and the outlet may be located on opposite sides of the housing and at opposite ends of the housing from each other. The aftertreatment module may include a set of catalysts mounted to the mounting plate. The aftertreatment module may include a diffuser plate within the inlet chamber that forms a lower portion of the inlet chamber and an upper portion of the inlet chamber. The diffuser plate may diffuse the exhaust gas through the lower portion.

An aftertreatment module is disclosed. The aftertreatment module may include a housing. The aftertreatment module may include a mounting plate within the housing that forms an inlet chamber and an outlet chamber. The aftertreatment module may include an inlet for exhaust gas from a combustion engine to flow into to the inlet chamber. The aftertreatment module may include an outlet through a top plate of the housing. The inlet and the outlet may be located on opposite sides of the housing and at opposite ends of the housing from each other. The aftertreatment module may include a set of catalysts mounted to the mounting plate. The aftertreatment module may include a diffuser plate within the inlet chamber that forms a lower portion of the inlet chamber and an upper portion of the inlet chamber. The diffuser plate may diffuse the exhaust gas through the lower portion.

A flue gas denitration system includes a catalytic reactor accommodating a plurality of catalytic modules, into which a flue gas flows, and a flue gas heater provided on an upstream side of the catalytic reactor in a flow direction of the flue gas. In the flue gas denitration system, switched are a first denitration state in which the flue gas is denitrated by using the plurality of catalytic modules in the catalytic reactor and a second denitration state in which the flue gas is denitrated by using a catalytic module(s) less than those used in the first denitration state while a temperature of the flue gas flowing into the catalytic reactor is made higher than that in the first denitration state by using the flue gas heater. Thus, by making the temperature of the flue gas flowing into the catalytic reactor higher, it is possible to suppress deterioration in denitration performance in the case of using part of the plurality of catalytic modules for denitration.

A micro ultraviolet waste gas treatment device includes a waste gas pipeline and an expansion guide groove connected with it, the outlet end of the expansion guide groove and a treatment and exhaust frame, the inlet end of the treatment and exhaust frame is separated into a plurality of spaces by a partition, each space is provided with a waste gas treatment device, the outlet end of the waste gas treatment device is connected and combined into a plurality of groups through a polymerization exhaust pipe, and each polymerization exhaust pipe is provided with a recovery pipe, the recovery pipe is polymerized at the inlet end of the waste gas pipe to form a recovery header and connected with the waste gas pipe. By expanding and directing the waste gas of the pipeline, the waste gas is directed to multiple independent treatment spaces.

A selective catalytic reduction filter (SCRF) including a wall-flow substrate having inlet channels and outlet channels is provided. A first selective catalytic reduction (SCR) catalyst zone is present in the inlet channels, and a second SCR catalyst zone is present in the outlet channels. The first SCR catalyst zone includes an iron-exchanged zeolite catalyst, and the second SCR catalyst zone includes a copper-exchanged zeolite catalyst. Exhaust gas treatment systems including the SCRF and methods of reducing production of nitrous oxide (N.sub.2O) during selective catalytic reduction of an exhaust gas stream using the SCRF are also provided herein.

A selective catalytic reduction filter (SCRF) including a wall-flow substrate having inlet channels and outlet channels is provided. A first selective catalytic reduction (SCR) catalyst zone is present in the inlet channels, and a second SCR catalyst zone is present in the outlet channels. The first SCR catalyst zone includes an iron-exchanged zeolite catalyst, and the second SCR catalyst zone includes a copper-exchanged zeolite catalyst. Exhaust gas treatment systems including the SCRF and methods of reducing production of nitrous oxide (N.sub.2O) during selective catalytic reduction of an exhaust gas stream using the SCRF are also provided herein.