摘要:
The invention relates to a catalyst for decomposing nitrous oxide, which is [1] a catalyst comprising a support having supported thereon aluminum, magnesium and rhodium, [2] a catalyst comprising an alumina support having supported thereon magnesium and rhodium, [3] a catalyst comprising a support having supported thereon rhodium, the support comprising a spinel crystalline composite oxide formed by magnesium and at least a part of aluminum, [4] a catalyst comprising a support having supported thereon aluminum, rhodium and at least one metal selected from zinc, iron, manganese and nickel, [5] a catalyst comprising an alumina support having supported thereon rhodium and at least one metal selected from zinc, iron, manganese and nickel, or [6] a catalyst comprising a support having supported thereon rhodium, the support comprising a spinel crystalline composite oxide formed by at least a part of aluminum and the at least one metal selected from zinc, iron, manganese and nickel. The catalyst is not easily deteriorated in the activity due to moisture, favored with low-temperature decomposition activity and capable of reducing the amount of NOx generated to the allowable concentration or less. The invention also relates to a process for producing the catalyst and to a method for decomposing nitrous oxide.
摘要翻译:本发明涉及一种用于分解一氧化二氮的催化剂,其是[1]一种催化剂,其包含负载有铝,镁和铑的载体,[2]一种催化剂,其包含负载有镁和铑的氧化铝载体,[3] a 催化剂包括其上负载有铑的载体,所述载体包含由镁和至少一部分铝形成的尖晶石结晶复合氧化物,[4]催化剂,其包含负载有铝,铑和至少一种选自锌的金属的催化剂 ,铁,锰和镍,[5]催化剂,其包含负载有铑的氧化铝载体和选自锌,铁,锰和镍的至少一种金属的催化剂,或[6]一种催化剂,其包含其上负载有铑的载体, 载体,其包含由至少一部分铝和选自锌,铁,锰和镍中的至少一种金属形成的尖晶石结晶复合氧化物。 催化剂不易由于水分而导致的活性降低,有利于低温分解活性,并且能够将生成的NOx的量减少至允许浓度或更低。 本发明还涉及一种生产该催化剂的方法和一种分解一氧化二氮的方法。
摘要:
To provide a process and an apparatus for treating a waste anesthetic gas containing a volatile anesthetic and nitrous oxide discharged from an operating room by introducing the gas into an adsorbing cylinder filled with an adsorbent, where the volatile anesthetic contained in the waste anesthetic gas is adsorbed and thereby removed, and successively introducing the gas into a catalyst layer filled with a nitrous oxide decomposition catalyst, where nitrous oxide is decomposed into nitrogen and oxygen. By using the process and the apparatus for treating a waste anesthetic gas of the present invention, a volatile anesthetic having a possibility of destroying the ozone layer or nitrous oxide as a global warming gas can be made harmless while preventing the release into atmosphere.
摘要:
To provide a process and an apparatus for treating a waste anesthetic gas containing a volatile anesthetic and nitrous oxide, discharged from an operating room. In the present invention, a waste anesthetic gas containing a volatile anesthetic and nitrous oxide is introduced into an adsorbing cylinder filled with an adsorbent, where the volatile anesthetic contained in the waste anesthetic gas is adsorbed and thereby removed, and successively this gas is introduced into a catalyst layer filled with a nitrous oxide decomposition catalyst, where nitrous oxide is decomposed into nitrogen and oxygen.
摘要:
[Problem to be Solved]To provide a process and an apparatus for treating a waste anesthetic gas containing a volatile anesthetic and nitrous oxide, discharged from an operating room. [Means to Solve the Problem]A waste anesthetic gas containing a volatile anesthetic and nitrous oxide is introduced into an adsorbing cylinder filled with an adsorbent, where the volatile anesthetic contained in the waste anesthetic gas is adsorbed and thereby removed, and successively this gas is introduced into a catalyst layer filled with a nitrous oxide decomposition catalyst, where nitrous oxide is decomposed into nitrogen and oxygen.
摘要:
A method for decomposing nitrous oxide comprises contacting a catalyst for decomposing nitrous oxide with a nitrous oxide-containing gas at 200 to 600° C. The catalyst comprises a support and supported thereon at least one noble metal selected from rhodium, ruthenium and palladium. The support comprises silica or silica alumina. At least one metal selected from zinc, iron and manganese can be supported on the support.
摘要:
A reaction apparatus comprising a heat exchanger 5 and a reactor 1 with a heater 2, which are enclosed in an outer casing 6, the top of the heat exchanger 5 being connected to the reactor 1, the other end part of the heat exchanger 5 and the bottom of the outer casing 6 being fixed to each other by a flange 4, and a double piping 7 for introducing a gas to be treated and discharging the treated gas being connected to the other end part of the heat exchanger 5, such that the gas passes through the heat exchanger 5, the reactor 1 and the heat exchanger 5 during the process from introducing gas through one of the inner tube and the outer tube in the double piping to discharging the gas through the other tube, and reaction method using the apparatus. Using the apparatus of the present invention, the temperature distribution inside the reactor can be kept uniform and efficiency in energy recovery is enhanced.
摘要:
A door weather strip includes an attaching base part that is attached along an outer periphery of a door frame and a hollow seal part that is extended in an outer peripheral direction of a door from the attaching base part. The attaching base part 11 includes a base bottom part, a vehicle inner side wall part and a vehicle outer side wall part and a partition wall. Both the attaching base part and the seal part are made of the same EPDM sponge rubber material by an extrusion process. The door weather strip satisfies conditions that a specific gravity is 0.36 or higher and 0.44 or lower, a low stretch stress is 200 kPa or higher and 230 kPa or lower and an average foaming cell diameter is 180 μm or larger and 220 μm or smaller.
摘要:
A weather strip 10 has a trim portion 20 and a hollow seal portion 40. The trim portion 20 is made up of an external sidewall 21, a bottom wall 23 and an internal sidewall 22 to thereby be given a substantially U-shaped cross section. A first flange holding lip 24 is formed on an interior surface of either of the external sidewall 21 and the internal sidewall 22 so as to be positioned on an opening side of the trim portion 20, a second flange holding lip 25 is formed on the interior surface of the same sidewall so as to be positioned on a bottom wall side of the trim portion 20, and opposite flange holding lips 26, 27 are formed on an interior surface of the other of the external sidewall 21 and the internal sidewall 22 so as to be positioned between the first flange holding lip 24 and the second flange holding lip 25 while extending therefrom.
摘要:
A weather strip is provided in which the trim portion does not have an insert member embedded, a notch or a thin wall portions are formed in a portion near the bottom wall of the vehicle exterior sidewall and the vehicle interior sidewall, a thick wall portion is formed in the further front end than the thin wall portion, and both the front ends are inclined so as to approach each other. Two of each of flange holding lips are formed on each of the inner surfaces of both sidewalls; and the angle at which the flange holding lips of the opening side are projected is formed larger than the angle of the flange holding lips of the bottom wall side; the front ends of the flange holding lips of the opening side are formed so as to be contact with or close to each other; the front ends of the flange holding lips 25 and 27 of the bottom wall side are linearly formed to have a gap in the width direction or in a direction orthogonal to the width direction.
摘要:
An insert with a light weight per unit length, which is securely separable to obtain insert pieces, a method for producing such an insert, and a method for producing long products using such an insert. The insert includes a large number of insert pieces and joining parts formed by the application of a rolling operation and a tension force, and has a ladder-shaped configuration. Slits are defined between adjacent insert pieces, and include first slits, each having a large width in a longitudinal direction of the insert, and second slits, each having a width smaller than that of the first slits so as to be alternately formed. The joining parts include first joining parts, each having a small width in a width direction of the insert, and second joining parts, each having a width larger than that of the first joining parts so as to be alternately formed. The width ratio of the insert pieces, the first slits and the second slits in the longitudinal direction is determined to 100:(65˜104):(24˜53), whereas the width ratio of the first joining parts to the second joining parts in the width direction is determined to 20:(28˜33).