Abstract: A method of regenerating an acid gas adsorption device includes the steps of: causing an acid gas to be adsorbed to an acid gas adsorption material by supplying a gas including the acid gas to an acid gas adsorption device so that the gas is brought into contact with an acid gas adsorption layer; causing the acid gas to be desorbed from the acid gas adsorption material; removing the acid gas adsorption layer of the acid gas adsorption device, which has been subjected to the step of causing the acid gas to be adsorbed and the step of causing the acid gas to be desorbed, from a surface of a base material; and forming an acid gas adsorption layer including a porous carrier and an acid gas adsorption material on the surface of the base material from which the acid gas adsorption layer has been removed.

Abstract: A reactor includes a second flow path on a permeation side of a separate membrane. The second flow path includes an inflow port open to a first space between a first seal portion and a flow stop unit, and an outflow port open to a second space between a second seal portion and a flow stop unit. A housing includes a sweep gas supply port for supplying a sweep gas to the first space and a sweep gas exhaust port for discharging the sweep gas from the second space. In a side view of the reactor, a direction in which the sweep gas flows through the second space is opposite to a direction in which the sweep gas flows through the second flow path.

Abstract: A reactor includes a second flow path on a permeation side of a separation membrane. The second flow path includes an inflow port open to a first space between a first seal portion and a flow rate adjustment unit, and an outflow port open to a second space between a second seal portion and a flow rate adjustment unit. A housing includes a sweep gas supply port for supplying a sweep gas to the first space and a sweep gas exhaust port for discharging the sweep gas from the second space. In a side view of the reactor, a direction in which the sweep gas flows from the first space to the second space via the flow rate adjustment unit is the same as a direction in which the sweep gas flows through the second flow path.

Abstract: A method for controlling a reductant generation device 100, the reductant generation device 100 including: a sprayer 10 capable of spraying a reductant precursor 50; and a heater 20 comprising a ceramic substrate 21, the heater 20 being arranged on a downstream side of the sprayer 10 and capable of heating the reductant precursor 50 to generate a reductant 60. The method includes: a permeation step of spraying the reductant precursor 50 from the sprayer 10 and permeating the ceramic substrate 21 with the reductant precursor 50 when the heater is not heated; and after the permeation step, a heating step A of heating the reductant precursor 50 by the heater 20 and generating the reductant 60 while spraying the reductant precursor 50 from the sprayer 10.

Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an inner cylinder being configured to house the honeycomb structure; a urea sprayer arranged at one end of the inner cylinder; and an outer cylinder arranged on an outer peripheral side of the inner cylinder, the outer cylinder being spaced apart from the inner cylinder. A flow path through which the carrier gas passes is formed between the inner cylinder and the outer cylinder.

Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass containing a crystalline substance, and the glass contains silicon, boron, and magnesium.

Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, the glass contains barium, and the glass has a content of barium of 5 mol % or more.

Abstract: A reductant injecting device, including: a honeycomb structure including: a pillar shaped honeycomb structure portion having partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder having an inlet side end portion and an outlet side end portion, the inlet side end portion comprising a carrier gas introduction port being configured to introduce a carrier gas, the outlet side end portion comprising an injection port being configured to inject ammonia; a urea sprayer arranged at one end of the outer cylinder; and a spray direction switcher configured to be able to switch a spray direction of the aqueous urea solution.

Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, and the glass has a content of an alkali metal element of 1,000 ppm or less.

Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, and the glass has a content of an alkali metal element of 1,000 ppm or less.

Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass containing a crystalline substance, and the glass contains silicon, boron, and magnesium.

Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, the glass contains barium, and the glass has a content of barium of 5 mol % or more.

Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder being configured to house the honeycomb structure, the outer cylinder having a carrier gas introduction port on the fluid inflow end face side; a urea sprayer arranged at one end of the outer cylinder; a carrier gas introduction cylinder provided at the carrier gas introduction port of the outer cylinder; and a carrier gas flow rate amplifier provided in the carrier gas introduction cylinder.

Abstract: A honeycomb structure including a honeycomb portion having porous partition walls extending from an inflow end face to an outflow end face, an outermost peripheral wall, and a pair of electrode layers on a side surface of the honeycomb portion. Each electrode layer extends in a direction of the cells. One electrode layer is disposed on a side opposite to the other electrode layer across a center of the honeycomb portion in a cross section orthogonal to the extending direction of the cells. The honeycomb structure portion includes first cells opened on the inflow side and plugged on the outflow side, and second cells opened on the outflow side and plugged on the inflow side. A middle of each length of the pair of electrode layers is closer to the outflow side than a middle position of a length of the honeycomb portion in the extending direction of the cells.

Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder being configured to house the honeycomb structure, the outer cylinder having a carrier gas introduction port on the fluid inflow end face side; a urea sprayer arranged at one end of the outer cylinder; a carrier gas introduction cylinder provided at the carrier gas introduction port of the outer cylinder; and a carrier gas flow rate amplifier provided in the carrier gas introduction cylinder.

Abstract: A reductant injecting device, including: a honeycomb structure including: a pillar shaped honeycomb structure portion having partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder having an inlet side end portion and an outlet side end portion, the inlet side end portion comprising a carrier gas introduction port being configured to introduce a carrier gas, the outlet side end portion comprising an injection port being configured to inject ammonia; a urea sprayer arranged at one end of the outer cylinder; and a spray direction switcher configured to be able to switch a spray direction of the aqueous urea solution.

Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an inner cylinder being configured to house the honeycomb structure; a urea sprayer arranged at one end of the inner cylinder; and an outer cylinder arranged on an outer peripheral side of the inner cylinder, the outer cylinder being spaced apart from the inner cylinder. A flow path through which the carrier gas passes is formed between the inner cylinder and the outer cylinder.

Abstract: A honeycomb structure including a honeycomb portion having porous partition walls extending from an inflow end face to an outflow end face, an outermost peripheral wall, and a pair of electrode layers on a side surface of the honeycomb portion. Each electrode layer extends in a direction of the cells. One electrode layer is disposed on a side opposite to the other electrode layer across a center of the honeycomb portion in a cross section orthogonal to the extending direction of the cells. The honeycomb structure portion includes first cells opened on the inflow side and plugged on the outflow side, and second cells opened on the outflow side and plugged on the inflow side. A middle of each length of the pair of electrode layers is closer to the outflow side than a middle position of a length of the honeycomb portion in the extending direction of the cells.

Abstract: A honeycomb structure molding apparatus 1 having a spinneret 4 provided with a back pore part 3 for introducing a molding material and a slit part 2 for extruding the molding material, and a press plate 5 for fixing the spinneret 4, in which the spinneret 4 comprises an inner side part 11 and an outer peripheral part 12, the inner side part 11 is protruded to the downstream side to form a level difference part 15 between the inner side part 11 and the outer peripheral part 15, the press plate 5 is opened opposing the inner side part 12 of the spinneret 4 and presses the downstream side of the outer peripheral part 12 of the spinneret 4 through a gap part 7, and there is provided a gap adjusting means 130 capable of changing width of the gap of the gap part 7.

Abstract: A honeycomb structure molding apparatus being free from defects in cells and having a higher strength with thin partition walls forming the cells and having a small cell density; and the apparatus having a plate-like spinneret provided with back pores for introducing a molding material and slits for extruding the molding material, and a press plate for fixing spinneret, the spinneret comprising an inner side and outer peripheral parts, the inner side part protruding downstream to form a level difference part therebetween, the press plate opening opposing the inner side part of the spinneret and presses the outer peripheral part of the spinneret downstream, and width W (mm) of slits, length L 1 (mm) of slits of the inner side part and length L 2 (mm) of slits of the outer peripheral part satisfying following two formulas: L1−L2≧0.4 mm L2≧0.015/W×L1.