摘要:
According to the invention, regeneration is performed by filtering and by regenerating simultaneously the used absorbent; two stages are carried out for the regeneration: one, which is a rough stage, is performed in the presence of a regeneration gas; the other, a free stage, is performed in the presence of a fresh regeneration gas.
摘要:
An incinerator fumes processing plant has a first reactor (1) with fumes and injected absorbent flowing longitudinally through it. The flow from the first reactor enters a second reactor tangentially. The second reactor (2) is constructed so that the flow is driven by a rotating motion so as to separate progressively, and by centrifugal effect, the solid particles from the gases. The second reactor includes means (2a, 2b) for recirculating in the plant part of the solid particles separated in the second reactor. The dedusted fumes are then discharged from the plant.
摘要:
A device for removing carbon deposits on solid objects, includes an inlet (102) for the objects to be treated, a zone (101a) for heating the objects having a feed (104) and an outlet for the heating gas, a zone (101b) for treating the objects by oxidation and/or gasification having a feed (105) and an outlet (108) for the gasification fluid, an outlet (118) for the treated objects. The heating zone (101a ) and the treating zone (101b) are situated in a single enclosure (100) and comprise a substantially flat-bottomed vibrating element (101) intended for transport of the objects, the bottom allowing support of the objects, diffusion of the fluid through the objects and transmission of the vibrations. A zone (101c) for cooling solids, placed in the enclosure (100) downstream from the treating zone (101b) in relation to the direction of displacement of the solids in the enclosure (100), and a heater (115) external to enclosure (100) is provided.
摘要:
This invention relates to a process for production of shaft passages in a molded plastic part, a mold, and the use of the process of production in, for example, a flap device particularly for a feed system for internal combustion engines, characterized in that it consists of: providing a recess by the advance of a slide of the molding tool between two adjacent bearings each associated with sites of different moving parts, and forming a bearing portion on each side of the sites of each moving part by a moving wedge relative to a slide, whereby the wedge carries a pin that is intended to form a bearing portion of one side of the moving part.
摘要:
A catalytic combustion process for at least one fuel comprises the use of a plurality of successive catalytic zones, the process being characterized in that at least one of the first catalytic zones includes a catalyst comprising a monolithic substrate, a porous support based on a refractory inorganic oxide and an active phase constituted by cerium, iron and optionally zirconium, also at least one metal selected from the group formed by palladium and platinum; and in that at least one of the subsequent catalytic zones includes an active phase comprising: an oxide of at least one element A with valency X selected from the group formed by barium, strontium and rare-earths; at least one element B with valency Y selected from the group formed by Mn, Co and Fe; and at least one element C selected from the group formed by Mg and Zn, and aluminium; the oxide may have formula A.sub.1-x B.sub.y C.sub.z Al.sub.12-y-z O.sub.19-.delta., x being 0 to 0.25, y being 0.5 to 3; and z being 0.01 to 3; the sum y+z having a maximum value of 4 and .delta. having a value which is a function of the respective valencies X and Y of elements A and B and the values of x, y and z, and is equal to 1-1/2{(1-x)X+yY-3y-z}.
摘要翻译:用于至少一种燃料的催化燃烧方法包括使用多个连续的催化区域,该方法的特征在于,至少一个第一催化区域包括包含整体式底物的催化剂,基于耐火无机材料的多孔载体 氧化物和由铈,铁和任选的锆构成的活性相,还有选自钯和铂形成的基团中的至少一种金属; 并且其中至少一个后续催化区包括活性相,其包含:至少一种元素A的氧化物,其价态X选自钡,锶和稀土形成的基团; 至少一种元素B,其价态Y选自由Mn,Co和Fe形成的基团; 和选自由Mg和Zn形成的组中的至少一种元素C和铝; 氧化物可具有式A1-xByCzAl12-y-zO19-delta,x为0至0.25,y为0.5至3; z为0.01〜3; 总和y + z具有最大值4,delta具有作为元素A和B的各自的价值X和Y的函数的值以及x,y和z的值,并且等于1- + E ,1/2 + EE {(1-x)X + yY-3y-z}。
摘要:
In a method of manufacturing a transparent polymer material article having a refractive index gradient the polymer base material is caused to absorb a swelling agent including at least a monomer adapted to yield a polymer having a refractive index different than that of the polymer base material. A first preform having a first geometry is formed from the polymer base material sufficiently polymerized for the first preform to be self-supporting. A confinement space is defined between the first preform and an abutment member having facing it a second geometry at least partly different than the first geometry and having a greater volume than the latter. The first preform is brought into contact in the confinement space with a sufficient quantity of swelling agent for the swelling to which it is then subject to cause it to be urged actively into contact with all points of the second geometry. The resulting polymer material is polymerized and the second preform thus obtained is machined, if necessary, to the required final geometry of the required article. The method finds an application in the manufacture of ophthalmic lenses.
摘要:
This invention describes apparatus for pressurization and filtration of contaminated air for a vehicle or mobile dwelling capable of containing several persons, especially if the contamination is of nuclear, biological and chemical origin. The apparatus comprises an air loop extending between a contaminated air intake and a processed air outlet, comprising two cyclone precleaners, a filter and an air circulation blower. The apparatus also comprises a dust loop extending between the dust outlets of the prefilters and a dust outlet and comprising a dust discharge blower. In this apparatus, the blowers are coupled to an identical driving device, and the intake of the first blower is situated close to the air outlets of the cyclone precleaners.
摘要:
The invention describes a nozzle and a burner for oil-well tests comprising a plurality of nozzles. The nozzle comprises means for injecting an air-oil mixture to be burnt in the direction of a combustion zone, the flow of air at the outlet of the nozzle allowing the air in the air-oil mixture to create an air induction effect, that is to say entrainment of air, which is sufficient along the whole length of the jet to ensure the combustion.
摘要:
Process for treating industrial and/or urban waste comprising notably a drying stage, a waste thermolysis stage and a dechlorination stage by washing the solids resulting from the thermolysis.According to the invention, said thermolysis is achieved by direct contact of the waste with warm gases having a low oxygen content.The invention further relates to the plant for implementing the process.
摘要:
For generating heat, with reduced emission of sulphur and nitrogen oxides, a fuel containing sulphur oxides and nitrogen is effected, the combustion burned and particles of a fresh absorbent are fed into a turbulent zone (9) upstream of an adiabatic desulphurisation zone (8); and the mixture produced is passed into a heat recovery zone (16). Part of the absorbent is recycled to the desulphurisation zone, and the flow rate of fresh absorbent and recycled absorbent is adjusted so that the temperature of that zone is from 750.degree. to 1000.degree. C.